Suggest user to install latest Java 8 to avoid potentional game crashing

修复 UpdateChecker 潜在问题 & 弃用 ImmediateXXXProperty

HMCL/src/main/java/org/jackhuang/hmcl/Launcher.java

@@ -17,23 +17,20 @@
  */
 package org.jackhuang.hmcl;
 
-import static org.jackhuang.hmcl.util.Lang.thread;
 import static org.jackhuang.hmcl.util.Logging.LOG;
 
 import com.jfoenix.concurrency.JFXUtilities;
 import javafx.application.Application;
 import javafx.application.Platform;
-import javafx.beans.binding.Bindings;
 import javafx.stage.Stage;
 
-import org.jackhuang.hmcl.setting.ConfigHolder;
 import org.jackhuang.hmcl.task.Schedulers;
 import org.jackhuang.hmcl.ui.Controllers;
 import org.jackhuang.hmcl.upgrade.UpdateChecker;
 import org.jackhuang.hmcl.util.*;
 
 import java.io.File;
-import java.io.IOException;
+import java.lang.management.ManagementFactory;
 import java.net.URISyntaxException;
 import java.net.URL;
 import java.net.URLClassLoader;
@@ -41,7 +38,6 @@ import java.nio.file.Paths;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
-import java.util.logging.Level;
 
 public final class Launcher extends Application {
 
@@ -57,24 +53,7 @@ public final class Launcher extends Application {
             primaryStage.setResizable(false);
             primaryStage.setScene(Controllers.getScene());
 
-            UpdateChecker.updateChannelProperty().addListener(observable -> {
-                thread(() -> {
-                    try {
-                        UpdateChecker.checkUpdate();
-                    } catch (IOException e) {
-                        LOG.log(Level.WARNING, "Failed to check for update", e);
-                    }
-                });
-            });
-
-            UpdateChecker.updateChannelProperty().bind(Bindings.createStringBinding(() -> {
-                switch (ConfigHolder.config().getUpdateChannel()) {
-                    case DEVELOPMENT:
-                        return UpdateChecker.CHANNEL_DEV;
-                    default:
-                        return UpdateChecker.CHANNEL_STABLE;
-                }
-            }, ConfigHolder.config().updateChannelProperty()));
+            UpdateChecker.init();
 
             primaryStage.show();
         } catch (Throwable e) {
@@ -101,6 +80,9 @@ public final class Launcher extends Application {
             LOG.info("Java Home: " + System.getProperty("java.home"));
             LOG.info("Current Directory: " + Paths.get("").toAbsolutePath());
             LOG.info("HMCL Directory: " + HMCL_DIRECTORY);
+            LOG.info("Memory: " + Runtime.getRuntime().maxMemory() / 1024 / 1024 + "MB");
+            ManagementFactory.getMemoryPoolMXBeans().stream().filter(bean -> bean.getName().equals("Metaspace")).findAny()
+                    .ifPresent(bean -> LOG.info("Metaspace: " + bean.getUsage().getUsed() / 1024 / 1024 + "MB"));
 
             launch(args);
         } catch (Throwable e) { // Fucking JavaFX will suppress the exception and will break our crash reporter.

HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java

@@ -227,29 +227,50 @@ public final class LauncherHelper {
             flag = true;
         }
 
-        if (!flag && java.getParsedVersion() < JavaVersion.JAVA_8) {
-            if (gameVersion.compareTo(VersionNumber.asVersion("1.13")) >= 0) {
-                // Minecraft 1.13 and later versions only support Java 8 or later.
-                // Terminate launching operation.
-                Controllers.dialog(i18n("launch.advice.java8_1_13"), i18n("message.error"), MessageBox.ERROR_MESSAGE, null);
+        // Game later than 1.7.2 accepts Java 8.
+        if (!flag && java.getParsedVersion() < JavaVersion.JAVA_8 && gameVersion.compareTo(VersionNumber.asVersion("1.7.2")) > 0) {
+            Optional<JavaVersion> java8 = JavaVersion.getJREs().stream()
+                    .filter(javaVersion -> javaVersion.getParsedVersion() >= JavaVersion.JAVA_8)
+                    .max(Comparator.comparing(JavaVersion::getVersionNumber));
+            if (java8.isPresent()) {
+                setting.setJavaVersion(java8.get());
             } else {
-                // Most mods require Java 8 or later version.
-                Controllers.dialog(i18n("launch.advice.newer_java"), i18n("message.warning"), MessageBox.WARNING_MESSAGE, onAccept);
+                if (gameVersion.compareTo(VersionNumber.asVersion("1.13")) >= 0) {
+                    // Minecraft 1.13 and later versions only support Java 8 or later.
+                    // Terminate launching operation.
+                    Controllers.dialog(i18n("launch.advice.java8_1_13"), i18n("message.error"), MessageBox.ERROR_MESSAGE, null);
+                } else {
+                    // Most mods require Java 8 or later version.
+                    Controllers.dialog(i18n("launch.advice.newer_java"), i18n("message.warning"), MessageBox.WARNING_MESSAGE, onAccept);
+                }
+                flag = true;
             }
-            flag = true;
         }
 
         // LaunchWrapper will crash because of assuming the system class loader is an instance of URLClassLoader.
         // cpw has claimed that he will make MinecraftForge of 1.13 and later versions able to run on Java 9.
-        if (!flag && java.getParsedVersion() >= JavaVersion.JAVA_9 && gameVersion.compareTo(VersionNumber.asVersion("1.12.5")) < 0 && version.getMainClass().contains("launchwrapper")) {
+        if (!flag && java.getParsedVersion() >= JavaVersion.JAVA_9 && gameVersion.compareTo(VersionNumber.asVersion("1.13")) < 0 && version.getMainClass().contains("launchwrapper")) {
             Optional<JavaVersion> java8 = JavaVersion.getJREs().stream().filter(javaVersion -> javaVersion.getParsedVersion() == JavaVersion.JAVA_8).findAny();
             if (java8.isPresent()) {
                 setting.setJavaVersion(java8.get());
-                Controllers.dialog(i18n("launch.advice.java9"), i18n("message.warning"), MessageBox.WARNING_MESSAGE, onAccept);
             } else {
                 Controllers.dialog(i18n("launch.advice.java9"), i18n("message.error"), MessageBox.ERROR_MESSAGE, null);
+                flag = true;
+            }
+        }
+
+        // Minecraft 1.13 may crash when generating world on Java 8 earlier than 1.8.0_51
+        VersionNumber JAVA_8 = VersionNumber.asVersion("1.8.0.51");
+        if (!flag && gameVersion.compareTo(VersionNumber.asVersion("1.13")) >= 0 && java.getParsedVersion() == JavaVersion.JAVA_8 && java.getVersionNumber().compareTo(JAVA_8) < 0) {
+            Optional<JavaVersion> java8 = JavaVersion.getJREs().stream()
+                    .filter(javaVersion -> javaVersion.getVersionNumber().compareTo(JAVA_8) >= 0)
+                    .max(Comparator.comparing(JavaVersion::getVersionNumber));
+            if (java8.isPresent()) {
+                setting.setJavaVersion(java8.get());
+            } else {
+                Controllers.dialog(i18n("launch.advice.java8_51_1_13"), i18n("message.warning"), MessageBox.WARNING_MESSAGE, onAccept);
+                flag = true;
             }
-            flag = true;
         }
 
         if (!flag && java.getPlatform() == org.jackhuang.hmcl.util.Platform.BIT_32 &&
@@ -257,6 +278,7 @@ public final class LauncherHelper {
             Controllers.dialog(i18n("launch.advice.different_platform"), i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
             flag = true;
         }
+
         if (!flag && java.getPlatform() == org.jackhuang.hmcl.util.Platform.BIT_32 &&
                 setting.getMaxMemory() > 1.5 * 1024) {
             // 1.5 * 1024 is an inaccurate number.
@@ -264,6 +286,7 @@ public final class LauncherHelper {
             Controllers.dialog(i18n("launch.advice.too_large_memory_for_32bit"), i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
             flag = true;
         }
+        
         if (!flag && OperatingSystem.TOTAL_MEMORY > 0 && OperatingSystem.TOTAL_MEMORY < setting.getMaxMemory()) {
             Controllers.dialog(i18n("launch.advice.not_enough_space", OperatingSystem.TOTAL_MEMORY), i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
             flag = true;

HMCL/src/main/java/org/jackhuang/hmcl/setting/Config.java

@@ -30,6 +30,7 @@ import org.hildan.fxgson.creators.ObservableSetCreator;
 import org.hildan.fxgson.factories.JavaFxPropertyTypeAdapterFactory;
 import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.auth.authlibinjector.AuthlibInjectorServer;
+import org.jackhuang.hmcl.upgrade.UpdateChannel;
 import org.jackhuang.hmcl.util.EnumOrdinalDeserializer;
 import org.jackhuang.hmcl.util.FileTypeAdapter;
 import org.jackhuang.hmcl.util.ObservableHelper;
@@ -150,7 +151,7 @@ public final class Config implements Cloneable, Observable {
     private ObservableList<AuthlibInjectorServer> authlibInjectorServers = FXCollections.observableArrayList();
 
     @SerializedName("updateChannel")
-    private ObjectProperty<EnumUpdateChannel> updateChannel = new SimpleObjectProperty<>(EnumUpdateChannel.STABLE);
+    private ObjectProperty<UpdateChannel> updateChannel = new SimpleObjectProperty<>(UpdateChannel.STABLE);
 
     @SerializedName("_version")
     private IntegerProperty configVersion = new SimpleIntegerProperty(0);
@@ -438,15 +439,15 @@ public final class Config implements Cloneable, Observable {
         return authlibInjectorServers;
     }
 
-    public EnumUpdateChannel getUpdateChannel() {
+    public UpdateChannel getUpdateChannel() {
         return updateChannel.get();
     }
 
-    public ObjectProperty<EnumUpdateChannel> updateChannelProperty() {
+    public ObjectProperty<UpdateChannel> updateChannelProperty() {
         return updateChannel;
     }
 
-    public void setUpdateChannel(EnumUpdateChannel updateChannel) {
+    public void setUpdateChannel(UpdateChannel updateChannel) {
         this.updateChannel.set(updateChannel);
     }
 }

HMCL/src/main/java/org/jackhuang/hmcl/ui/SettingsPage.java

@@ -46,6 +46,7 @@ import org.jackhuang.hmcl.ui.construct.FontComboBox;
 import org.jackhuang.hmcl.ui.construct.MultiFileItem;
 import org.jackhuang.hmcl.ui.construct.Validator;
 import org.jackhuang.hmcl.ui.wizard.DecoratorPage;
+import org.jackhuang.hmcl.upgrade.UpdateChannel;
 import org.jackhuang.hmcl.upgrade.RemoteVersion;
 import org.jackhuang.hmcl.upgrade.UpdateChecker;
 import org.jackhuang.hmcl.upgrade.UpdateHandler;
@@ -242,24 +243,24 @@ public final class SettingsPage extends StackPane implements DecoratorPage {
 
         lblUpdateNote.setWrappingWidth(470);
 
-        ObjectProperty<EnumUpdateChannel> updateChannel = new SimpleObjectProperty<EnumUpdateChannel>() {
+        ObjectProperty<UpdateChannel> updateChannel = new SimpleObjectProperty<UpdateChannel>() {
             @Override
             protected void invalidated() {
-                EnumUpdateChannel updateChannel = Objects.requireNonNull(get());
-                chkUpdateDev.setSelected(updateChannel == EnumUpdateChannel.DEVELOPMENT);
-                chkUpdateStable.setSelected(updateChannel == EnumUpdateChannel.STABLE);
+                UpdateChannel updateChannel = Objects.requireNonNull(get());
+                chkUpdateDev.setSelected(updateChannel == UpdateChannel.DEVELOPMENT);
+                chkUpdateStable.setSelected(updateChannel == UpdateChannel.STABLE);
             }
         };
 
         ToggleGroup updateChannelGroup = new ToggleGroup();
         chkUpdateDev.setToggleGroup(updateChannelGroup);
-        chkUpdateDev.setUserData(EnumUpdateChannel.DEVELOPMENT);
+        chkUpdateDev.setUserData(UpdateChannel.DEVELOPMENT);
         chkUpdateStable.setToggleGroup(updateChannelGroup);
-        chkUpdateStable.setUserData(EnumUpdateChannel.STABLE);
+        chkUpdateStable.setUserData(UpdateChannel.STABLE);
         updateChannelGroup.getToggles().forEach(
                 toggle -> toggle.selectedProperty().addListener((observable, oldValue, newValue) -> {
                     if (newValue) {
-                        updateChannel.set((EnumUpdateChannel) toggle.getUserData());
+                        updateChannel.set((UpdateChannel) toggle.getUserData());
                     }
                 }));
         updateChannel.bindBidirectional(ConfigHolder.config().updateChannelProperty());

HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionPage.java

@@ -26,16 +26,17 @@ import javafx.beans.property.StringProperty;
 import javafx.fxml.FXML;
 import javafx.scene.control.Tab;
 import javafx.scene.layout.StackPane;
-
 import org.jackhuang.hmcl.download.game.GameAssetIndexDownloadTask;
+import org.jackhuang.hmcl.setting.EnumGameDirectory;
 import org.jackhuang.hmcl.setting.Profile;
 import org.jackhuang.hmcl.ui.export.ExportWizardProvider;
 import org.jackhuang.hmcl.ui.wizard.DecoratorPage;
 import org.jackhuang.hmcl.util.FileUtils;
-import static org.jackhuang.hmcl.util.i18n.I18n.i18n;
 
 import java.io.File;
 
+import static org.jackhuang.hmcl.util.i18n.I18n.i18n;
+
 public final class VersionPage extends StackPane implements DecoratorPage {
     private final StringProperty title = new SimpleStringProperty(this, "title", null);
 
@@ -186,7 +187,12 @@ public final class VersionPage extends StackPane implements DecoratorPage {
     }
 
     public static void deleteVersion(Profile profile, String version) {
-        Controllers.confirmDialog(i18n("version.manage.remove.confirm", version), i18n("message.confirm"), () -> {
+        boolean isIndependent = profile.getVersionSetting(version).getGameDirType() == EnumGameDirectory.VERSION_FOLDER;
+        boolean isMovingToTrashSupported = FileUtils.isMovingToTrashSupported();
+        String message = isIndependent ? i18n("version.manage.remove.confirm.independent", version) :
+                isMovingToTrashSupported ? i18n("version.manage.remove.confirm.trash", version, version + "_removed") :
+                        i18n("version.manage.remove.confirm", version);
+        Controllers.confirmDialog(message, i18n("message.confirm"), () -> {
             if (profile.getRepository().removeVersionFromDisk(version)) {
                 profile.getRepository().refreshVersionsAsync().start();
                 Controllers.navigate(null);

HMCL/src/main/java/org/jackhuang/hmcl/ui/download/AdditionalInstallersPage.java

@@ -103,7 +103,7 @@ class AdditionalInstallersPage extends StackPane implements WizardPage {
     }
 
     private String getVersion(String id) {
-        return Optional.ofNullable(controller.getSettings().get(id)).map(it -> (RemoteVersion<?>) it).map(RemoteVersion::getSelfVersion).orElse(null);
+        return Optional.ofNullable(controller.getSettings().get(id)).map(it -> (RemoteVersion) it).map(RemoteVersion::getSelfVersion).orElse(null);
     }
 
     @Override

HMCL/src/main/java/org/jackhuang/hmcl/ui/download/DownloadWizardProvider.java

@@ -49,16 +49,16 @@ public final class DownloadWizardProvider implements WizardProvider {
         GameBuilder builder = profile.getDependency().gameBuilder();
 
         builder.name((String) settings.get("name"));
-        builder.gameVersion(((RemoteVersion<?>) settings.get("game")).getGameVersion());
+        builder.gameVersion(((RemoteVersion) settings.get("game")).getGameVersion());
 
         if (settings.containsKey("forge"))
-            builder.version((RemoteVersion<?>) settings.get("forge"));
+            builder.version((RemoteVersion) settings.get("forge"));
 
         if (settings.containsKey("liteloader"))
-            builder.version((RemoteVersion<?>) settings.get("liteloader"));
+            builder.version((RemoteVersion) settings.get("liteloader"));
 
         if (settings.containsKey("optifine"))
-            builder.version((RemoteVersion<?>) settings.get("optifine"));
+            builder.version((RemoteVersion) settings.get("optifine"));
 
         return builder.buildAsync().finalized((a, b) -> profile.getRepository().refreshVersions());
     }

HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallerWizardProvider.java

@@ -85,16 +85,16 @@ public final class InstallerWizardProvider implements WizardProvider {
         settings.put("success_message", i18n("install.success"));
         settings.put("failure_message", i18n("install.failed"));
 
-        Task ret = Task.empty();
+        Task ret = Task.ofResult("version", () -> version);
 
         if (settings.containsKey("forge"))
-            ret = ret.then(profile.getDependency().installLibraryAsync(version, (RemoteVersion<?>) settings.get("forge")));
+            ret = ret.then(profile.getDependency().installLibraryAsync((RemoteVersion) settings.get("forge")));
 
         if (settings.containsKey("liteloader"))
-            ret = ret.then(profile.getDependency().installLibraryAsync(version, (RemoteVersion<?>) settings.get("liteloader")));
+            ret = ret.then(profile.getDependency().installLibraryAsync((RemoteVersion) settings.get("liteloader")));
 
         if (settings.containsKey("optifine"))
-            ret = ret.then(profile.getDependency().installLibraryAsync(version, (RemoteVersion<?>) settings.get("optifine")));
+            ret = ret.then(profile.getDependency().installLibraryAsync((RemoteVersion) settings.get("optifine")));
 
         return ret.then(profile.getRepository().refreshVersionsAsync());
     }

HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallersPage.java

@@ -74,7 +74,7 @@ public class InstallersPage extends StackPane implements WizardPage {
 
         FXUtils.loadFXML(this, "/assets/fxml/download/installers.fxml");
 
-        String gameVersion = ((RemoteVersion<?>) controller.getSettings().get("game")).getGameVersion();
+        String gameVersion = ((RemoteVersion) controller.getSettings().get("game")).getGameVersion();
         Validator hasVersion = new Validator(s -> !repository.hasVersion(s) && StringUtils.isNotBlank(s));
         hasVersion.setMessage(i18n("install.new_game.already_exists"));
         txtName.getValidators().add(hasVersion);
@@ -103,7 +103,7 @@ public class InstallersPage extends StackPane implements WizardPage {
     }
 
     private String getVersion(String id) {
-        return ((RemoteVersion<?>) controller.getSettings().get(id)).getSelfVersion();
+        return ((RemoteVersion) controller.getSettings().get(id)).getSelfVersion();
     }
 
     @Override

HMCL/src/main/java/org/jackhuang/hmcl/ui/download/VersionsPage.java

@@ -27,9 +27,8 @@ import javafx.scene.layout.HBox;
 import javafx.scene.layout.StackPane;
 import javafx.scene.layout.VBox;
 import org.jackhuang.hmcl.download.DownloadProvider;
+import org.jackhuang.hmcl.download.RemoteVersion;
 import org.jackhuang.hmcl.download.VersionList;
-import org.jackhuang.hmcl.download.game.GameRemoteVersionTag;
-import org.jackhuang.hmcl.download.game.GameVersionList;
 import org.jackhuang.hmcl.task.TaskExecutor;
 import org.jackhuang.hmcl.ui.FXUtils;
 import org.jackhuang.hmcl.ui.animation.ContainerAnimations;
@@ -48,6 +47,7 @@ public final class VersionsPage extends StackPane implements WizardPage, Refresh
     private final DownloadProvider downloadProvider;
     private final String libraryId;
     private final String title;
+    private final Runnable callback;
 
     @FXML
     private JFXListView<VersionsPageItem> list;
@@ -56,6 +56,8 @@ public final class VersionsPage extends StackPane implements WizardPage, Refresh
     @FXML
     private StackPane failedPane;
     @FXML
+    private StackPane emptyPane;
+    @FXML
     private JFXCheckBox chkRelease;
     @FXML
     private JFXCheckBox chkSnapshot;
@@ -75,11 +77,12 @@ public final class VersionsPage extends StackPane implements WizardPage, Refresh
         this.gameVersion = gameVersion;
         this.downloadProvider = downloadProvider;
         this.libraryId = libraryId;
+        this.callback = callback;
         this.versionList = downloadProvider.getVersionListById(libraryId);
 
         FXUtils.loadFXML(this, "/assets/fxml/download/versions.fxml");
 
-        if (versionList instanceof GameVersionList) {
+        if (versionList.hasType()) {
             centrePane.getChildren().setAll(checkPane, list);
         } else
             centrePane.getChildren().setAll(list);
@@ -99,21 +102,19 @@ public final class VersionsPage extends StackPane implements WizardPage, Refresh
     }
 
     private List<VersionsPageItem> loadVersions() {
-        boolean isGameVersionList = versionList instanceof GameVersionList;
         return versionList.getVersions(gameVersion).stream()
                 .filter(it -> {
-                    if (isGameVersionList)
-                        switch (((GameRemoteVersionTag) it.getTag()).getType()) {
-                            case RELEASE:
-                                return chkRelease.isSelected();
-                            case SNAPSHOT:
-                                return chkSnapshot.isSelected();
-                            default:
-                                return chkOld.isSelected();
-                        }
-                    else return true;
+                    switch (it.getVersionType()) {
+                        case RELEASE:
+                            return chkRelease.isSelected();
+                        case SNAPSHOT:
+                            return chkSnapshot.isSelected();
+                        case OLD:
+                            return chkOld.isSelected();
+                        default:
+                            return true;
+                    }
                 })
-                .filter(Objects::nonNull)
                 .sorted()
                 .map(VersionsPageItem::new).collect(Collectors.toList());
     }
@@ -126,8 +127,12 @@ public final class VersionsPage extends StackPane implements WizardPage, Refresh
                 List<VersionsPageItem> items = loadVersions();
 
                 Platform.runLater(() -> {
-                    list.getItems().setAll(items);
-                    transitionHandler.setContent(centrePane, ContainerAnimations.FADE.getAnimationProducer());
+                    if (items.isEmpty()) {
+                        transitionHandler.setContent(emptyPane, ContainerAnimations.FADE.getAnimationProducer());
+                    } else {
+                        list.getItems().setAll(items);
+                        transitionHandler.setContent(centrePane, ContainerAnimations.FADE.getAnimationProducer());
+                    }
                 });
             } else {
                 Platform.runLater(() -> {
@@ -153,4 +158,7 @@ public final class VersionsPage extends StackPane implements WizardPage, Refresh
     private void onRefresh() {
         refresh();
     }
+
+    @FXML
+    private void onBack() { callback.run(); }
 }

HMCL/src/main/java/org/jackhuang/hmcl/ui/download/VersionsPageItem.java

@@ -25,8 +25,9 @@ import javafx.scene.layout.HBox;
 import javafx.scene.layout.StackPane;
 
 import org.jackhuang.hmcl.download.RemoteVersion;
-import org.jackhuang.hmcl.download.game.GameRemoteVersionTag;
-import org.jackhuang.hmcl.download.liteloader.LiteLoaderRemoteVersionTag;
+import org.jackhuang.hmcl.download.forge.ForgeRemoteVersion;
+import org.jackhuang.hmcl.download.game.GameRemoteVersion;
+import org.jackhuang.hmcl.download.liteloader.LiteLoaderRemoteVersion;
 import org.jackhuang.hmcl.download.optifine.OptiFineRemoteVersion;
 import org.jackhuang.hmcl.ui.FXUtils;
 import static org.jackhuang.hmcl.util.i18n.I18n.i18n;
@@ -37,7 +38,7 @@ import java.util.Objects;
  * @author huangyuhui
  */
 public final class VersionsPageItem extends StackPane {
-    private final RemoteVersion<?> remoteVersion;
+    private final RemoteVersion remoteVersion;
     @FXML
     private Label lblSelfVersion;
     @FXML
@@ -49,14 +50,14 @@ public final class VersionsPageItem extends StackPane {
     @FXML
     private StackPane imageViewContainer;
 
-    public VersionsPageItem(RemoteVersion<?> remoteVersion) {
+    public VersionsPageItem(RemoteVersion remoteVersion) {
         this.remoteVersion = Objects.requireNonNull(remoteVersion);
 
         FXUtils.loadFXML(this, "/assets/fxml/download/versions-list-item.fxml");
         lblSelfVersion.setText(remoteVersion.getSelfVersion());
 
-        if (remoteVersion.getTag() instanceof GameRemoteVersionTag) {
-            switch (((GameRemoteVersionTag) remoteVersion.getTag()).getType()) {
+        if (remoteVersion instanceof GameRemoteVersion) {
+            switch (remoteVersion.getVersionType()) {
                 case RELEASE:
                     lblGameVersion.setText(i18n("version.game.release"));
                     imageView.setImage(new Image("/assets/img/icon.png", 32, 32, false, true));
@@ -70,13 +71,13 @@ public final class VersionsPageItem extends StackPane {
                     imageView.setImage(new Image("/assets/img/grass.png", 32, 32, false, true));
                     break;
             }
-        } else if (remoteVersion.getTag() instanceof LiteLoaderRemoteVersionTag) {
+        } else if (remoteVersion instanceof LiteLoaderRemoteVersion) {
             imageView.setImage(new Image("/assets/img/chicken.png", 32, 32, false, true));
             lblGameVersion.setText(remoteVersion.getGameVersion());
         } else if (remoteVersion instanceof OptiFineRemoteVersion) {
             // optifine has no icon.
             lblGameVersion.setText(remoteVersion.getGameVersion());
-        } else { // forge
+        } else if (remoteVersion instanceof ForgeRemoteVersion) {
             imageView.setImage(new Image("/assets/img/forge.png", 32, 32, false, true));
             lblGameVersion.setText(remoteVersion.getGameVersion());
         }
@@ -84,7 +85,7 @@ public final class VersionsPageItem extends StackPane {
         leftPane.getChildren().remove(imageViewContainer);
     }
 
-    public RemoteVersion<?> getRemoteVersion() {
+    public RemoteVersion getRemoteVersion() {
         return remoteVersion;
     }
 }

HMCL/src/main/java/org/jackhuang/hmcl/upgrade/UpdateChannel.java

@@ -1,6 +1,6 @@
 /*
  * Hello Minecraft! Launcher.
- * Copyright (C) 2017  huangyuhui <[email protected]>
+ * Copyright (C) 2018  huangyuhui <[email protected]>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -15,9 +15,15 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see {http://www.gnu.org/licenses/}.
  */
-package org.jackhuang.hmcl.setting;
+package org.jackhuang.hmcl.upgrade;
 
-public enum EnumUpdateChannel {
-    STABLE,
-    DEVELOPMENT
+public enum UpdateChannel {
+    STABLE("stable"),
+    DEVELOPMENT("dev");
+
+    public final String channelName;
+
+    UpdateChannel(String channelName) {
+        this.channelName = channelName;
+    }
 }

HMCL/src/main/java/org/jackhuang/hmcl/upgrade/UpdateChecker.java

@@ -17,16 +17,20 @@
  */
 package org.jackhuang.hmcl.upgrade;
 
+import static org.jackhuang.hmcl.setting.ConfigHolder.config;
+import static org.jackhuang.hmcl.ui.FXUtils.onInvalidating;
 import static org.jackhuang.hmcl.util.Lang.mapOf;
+import static org.jackhuang.hmcl.util.Lang.thread;
+import static org.jackhuang.hmcl.util.Logging.LOG;
 import static org.jackhuang.hmcl.util.Pair.pair;
 import static org.jackhuang.hmcl.util.VersionNumber.asVersion;
 
 import java.io.IOException;
+import java.util.logging.Level;
 
-import com.jfoenix.concurrency.JFXUtilities;
 import javafx.beans.property.*;
 import org.jackhuang.hmcl.Metadata;
-import org.jackhuang.hmcl.util.ImmediateStringProperty;
+import org.jackhuang.hmcl.setting.ConfigHolder;
 import org.jackhuang.hmcl.util.NetworkUtils;
 
 import javafx.application.Platform;
@@ -37,11 +41,6 @@ import javafx.beans.value.ObservableBooleanValue;
 public final class UpdateChecker {
     private UpdateChecker() {}
 
-    public static final String CHANNEL_STABLE = "stable";
-    public static final String CHANNEL_DEV = "dev";
-
-    private static StringProperty updateChannel = new ImmediateStringProperty(null, "updateChannel", CHANNEL_STABLE);
-
     private static ObjectProperty<RemoteVersion> latestVersion = new SimpleObjectProperty<>();
     private static BooleanBinding outdated = Bindings.createBooleanBinding(
             () -> {
@@ -55,16 +54,9 @@ public final class UpdateChecker {
             latestVersion);
     private static ReadOnlyBooleanWrapper checkingUpdate = new ReadOnlyBooleanWrapper(false);
 
-    public static String getUpdateChannel() {
-        return updateChannel.get();
-    }
-
-    public static void setUpdateChannel(String updateChannel) {
-        UpdateChecker.updateChannel.set(updateChannel);
-    }
-
-    public static StringProperty updateChannelProperty() {
-        return updateChannel;
+    public static void init() {
+        ConfigHolder.config().updateChannelProperty().addListener(onInvalidating(UpdateChecker::requestCheckUpdate));
+        requestCheckUpdate();
     }
 
     public static RemoteVersion getLatestVersion() {
@@ -91,35 +83,53 @@ public final class UpdateChecker {
         return checkingUpdate.getReadOnlyProperty();
     }
 
-    public static void checkUpdate() throws IOException {
+    private static RemoteVersion checkUpdate(UpdateChannel channel) throws IOException {
         if (!IntegrityChecker.isSelfVerified()) {
-            return;
+            throw new IOException("Self verification failed");
         }
 
-        JFXUtilities.runInFXAndWait(() -> {
-            checkingUpdate.set(true);
-        });
+        String url = NetworkUtils.withQuery(Metadata.UPDATE_URL, mapOf(
+                pair("version", Metadata.VERSION),
+                pair("channel", channel.channelName)));
 
-        try {
-
-            String channel = getUpdateChannel();
-            String url = NetworkUtils.withQuery(Metadata.UPDATE_URL, mapOf(
-                    pair("version", Metadata.VERSION),
-                    pair("channel", channel)));
-
-            RemoteVersion fetched = RemoteVersion.fetch(url);
-            Platform.runLater(() -> {
-                if (channel.equals(getUpdateChannel())) {
-                    latestVersion.set(fetched);
-                }
-            });
-        } finally {
-            Platform.runLater(() -> checkingUpdate.set(false));
-        }
+        return RemoteVersion.fetch(url);
     }
 
     private static boolean isDevelopmentVersion(String version) {
         return version.contains("@") || // eg. @develop@
                 version.contains("SNAPSHOT"); // eg. 3.1.SNAPSHOT
     }
+
+    public static void requestCheckUpdate() {
+        Platform.runLater(() -> {
+            if (isCheckingUpdate())
+                return;
+            checkingUpdate.set(true);
+            UpdateChannel channel = config().getUpdateChannel();
+
+            thread(() -> {
+                RemoteVersion result = null;
+                try {
+                    result = checkUpdate(channel);
+                    LOG.info("Latest version (" + channel + ") is " + result);
+                } catch (IOException e) {
+                    LOG.log(Level.WARNING, "Failed to check for update", e);
+                }
+
+                RemoteVersion finalResult = result;
+                Platform.runLater(() -> {
+                    checkingUpdate.set(false);
+                    if (finalResult != null) {
+                        if (channel.equals(config().getUpdateChannel())) {
+                            latestVersion.set(finalResult);
+                        } else {
+                            // the channel has been changed during the period
+                            // check update again
+                            requestCheckUpdate();
+                        }
+                    }
+                });
+            });
+        });
+    }
 }

HMCL/src/main/resources/assets/fxml/download/versions.fxml

@@ -20,4 +20,7 @@
     <StackPane fx:id="failedPane">
         <Label onMouseClicked="#onRefresh" style="-fx-text-fill: #0079FF; -fx-font-size: 20;" text="%download.failed.refresh" />
     </StackPane>
+    <StackPane fx:id="emptyPane">
+        <Label onMouseClicked="#onBack" style="-fx-text-fill: #0079FF; -fx-font-size: 20;" text="%download.failed.empty" />
+    </StackPane>
 </fx:root>

HMCL/src/main/resources/assets/lang/I18N.properties

@@ -83,6 +83,7 @@ crash.user_fault=Your OS or Java environment may not be properly installed resul
 download=Download
 download.BMCL=BMCLAPI (bangbang93, https://bmclapi2.bangbang93.com/)
 download.failed=Failed to download
+download.failed.empty=No candidates. Click here to return.
 download.failed.refresh=Unable to load version list. Click here to retry.
 download.mojang=Mojang
 
@@ -134,6 +135,7 @@ lang.default=Use system language
 
 launch.advice.different_platform=Your OS is 64-Bit but your Java is 32-Bit. The 64-Bit Java is recommended.
 launch.advice.java8_1_13=Minecraft 1.13 and later versions can only run on Java 8 or later.
+launch.advice.java8_51_1_13=Minecraft 1.13 may crash on Java 8 earlier than 1.8.0_51. You are supposed to install the latest version of Java 8.
 launch.advice.java9=You cannot launch Minecraft until game version is higher than 1.13 with Java 9 or later Java versions.
 launch.advice.newer_java=Java 8 is suggested, which can make game run more fluently. And many mods and Minecraft 1.12 and newer versions requires Java 8.
 launch.advice.not_enough_space=You have allocated too much memory, because the physical memory size is %dMB, your game probably crash. The launcher will try to launch it.
@@ -334,7 +336,9 @@ version.launch_script.save=Save the launch script
 version.launch_script.success=Finished script creation, %s.
 version.manage.redownload_assets_index=Redownload Assets Index
 version.manage.remove=Delete this game
-version.manage.remove.confirm=Sure to remove version %s?
+version.manage.remove.confirm=Sure to remove game %s? You cannot restore this game again!
+version.manage.remove.confirm.trash=Sure to remove game %s? You can restore the game with the name of %s in your system trash.
+version.manage.remove.confirm.independent=Since this game is in independent mode, deleting this game will result in all saved worlds belonging to this game removed simultaneously. Sure to remove game %s?
 version.manage.remove_libraries=Delete library files
 version.manage.rename=Rename this game
 version.manage.rename.message=Please enter the new name

HMCL/src/main/resources/assets/lang/I18N_zh.properties

@@ -83,6 +83,7 @@ crash.user_fault=您的系統或 Java 環境可能安裝不當導致本軟件崩
 download=下載
 download.BMCL=BMCLAPI（bangbang93，https://bmclapi2.bangbang93.com/）
 download.failed=下載失敗
+download.failed.empty=沒有可供安裝的版本，點擊此處返回。
 download.failed.refresh=加載版本列表失敗，點擊此處重試。
 download.mojang=官方
 
@@ -134,6 +135,7 @@ lang.default=跟隨系統語言
 
 launch.advice.different_platform=您的系統是 64 位的但是 Java 是 32 位的，推薦您安裝 64 位 Java。
 launch.advice.java8_1_13=Minecraft 1.13 只支持 Java 8 或更高版本，請使用 Java 8 或最新版本。
+launch.advice.java8_51_1_13=舊於 1.8.0_51 的 Java 可能會導致 Minecraft 1.13 崩潰。建議您到 https://java.com 安裝最新版的Java 8。
 launch.advice.java9=不高於 1.13 的安裝了 Mod 的 Minecraft 不支持 Java 9 或更高版本，請使用 Java 8。
 launch.advice.newer_java=檢測到您未使用 Java 8 及更新版本，Java 8 能使遊戲更流暢而且 Minecraft 1.12 及更新版本和很多 Mod 強制需要需要 Java 8。
 launch.advice.not_enough_space=您設置的內存大小過大，由於超過了系統內存大小 %dMB，所以可能影響遊戲體驗或無法啓動遊戲，啓動器仍會嘗試啓動。
@@ -334,7 +336,9 @@ version.launch_script.save=保存啓動腳本
 version.launch_script.success=啓動腳本已生成完畢：%s
 version.manage.redownload_assets_index=重新下載資源配置（assets_index.json）
 version.manage.remove=刪除該版本
-version.manage.remove.confirm=真的要刪除版本 %s 嗎？
+version.manage.remove.confirm=真的要刪除版本 %s 嗎？你將無法找回被刪除的文件！
+version.manage.remove.confirm.trash=真的要刪除版本 %s 嗎？你可以在系統的回收站中恢復文件夾 %s 來找回該版本。
+version.manage.remove.confirm.independent=由於該遊戲使用了版本隔離，所以刪除該版本將導致該遊戲的存檔等數據一同被刪除，真的要刪除版本 %s 嗎？
 version.manage.remove_libraries=刪除所有庫文件
 version.manage.rename=重命名該版本
 version.manage.rename.message=請輸入要改成的名字

HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties

@@ -83,6 +83,7 @@ crash.user_fault=您的系统或 Java 环境可能安装不当导致本软件崩
 download=下载
 download.BMCL=BMCLAPI（bangbang93，https://bmclapi2.bangbang93.com/）
 download.failed=下载失败
+download.failed.empty=没有可供安装的版本，点击此处返回。
 download.failed.refresh=加载版本列表失败，点击此处重试。
 download.mojang=官方
 
@@ -134,6 +135,7 @@ lang.default=跟随系统语言
 
 launch.advice.different_platform=您的系统是 64 位的但是 Java 是 32 位的，推荐您安装 64 位 Java。
 launch.advice.java8_1_13=Minecraft 1.13 只支持 Java 8 或更高版本，请使用 Java 8 或最新版本。
+launch.advice.java8_51_1_13=旧于 1.8.0_51 的 Java 可能会导致 Minecraft 1.13 崩溃。建议您到 https://java.com 安装最新版的 Java 8。
 launch.advice.java9=不高于 1.13 的安装了 Mod 的 Minecraft 不支持 Java 9 或更高版本，请使用 Java 8。
 launch.advice.newer_java=检测到您未使用 Java 8 及更新版本，Java 8 能使游戏更流畅而且 Minecraft 1.12 及更新版本和很多 Mod 强制需要需要 Java 8。
 launch.advice.not_enough_space=您设置的内存大小过大，由于超过了系统内存大小 %dMB，所以可能影响游戏体验或无法启动游戏，启动器仍会尝试启动。
@@ -334,7 +336,9 @@ version.launch_script.save=保存启动脚本
 version.launch_script.success=启动脚本已生成完毕：%s
 version.manage.redownload_assets_index=重新下载资源配置（assets_index.json）
 version.manage.remove=删除该版本
-version.manage.remove.confirm=真的要删除版本 %s 吗？
+version.manage.remove.confirm=真的要删除版本 %s 吗？你将无法找回被删除的文件！
+version.manage.remove.confirm.trash=真的要删除版本 %s 吗？你可以在系统的回收站中恢复文件夹 %s 来找回该版本。
+version.manage.remove.confirm.independent=由于该游戏使用了版本隔离，所以删除该版本将导致该游戏的存档等数据一同被删除，真的要删除版本 %s 吗？
 version.manage.remove_libraries=删除所有库文件
 version.manage.rename=重命名该版本
 version.manage.rename.message=请输入要改成的名字

HMCLCore/src/main/java/org/jackhuang/hmcl/download/BMCLAPIDownloadProvider.java

@@ -64,8 +64,8 @@ public class BMCLAPIDownloadProvider implements DownloadProvider {
         return baseURL
                 .replace("https://launchermeta.mojang.com", "https://bmclapi2.bangbang93.com")
                 .replace("https://launcher.mojang.com", "https://bmclapi2.bangbang93.com")
-                .replace("https://libraries.minecraft.net", "https://bmclapi2.bangbang93.com/libraries")
-                .replaceFirst("https?://files\\.minecraftforge\\.net/maven", "https://bmclapi2.bangbang93.com/maven")
+                .replace("https://libraries.minecraft.net", "http://bmclapi2.bangbang93.com/libraries")
+                .replaceFirst("https?://files\\.minecraftforge\\.net/maven", "http://bmclapi2.bangbang93.com/maven")
                 .replace("http://dl.liteloader.com/versions/versions.json", "https://bmclapi2.bangbang93.com/maven/com/mumfrey/liteloader/versions.json")
                 .replace("http://dl.liteloader.com/versions", "https://bmclapi2.bangbang93.com/maven")
                 .replace("https://authlib-injector.yushi.moe", "https://bmclapi2.bangbang93.com/mirrors/authlib-injector");

HMCLCore/src/main/java/org/jackhuang/hmcl/download/DefaultDependencyManager.java

@@ -28,6 +28,8 @@ import org.jackhuang.hmcl.game.DefaultGameRepository;
 import org.jackhuang.hmcl.game.Version;
 import org.jackhuang.hmcl.task.ParallelTask;
 import org.jackhuang.hmcl.task.Task;
+import org.jackhuang.hmcl.util.AutoTypingMap;
+import org.jackhuang.hmcl.util.ExceptionalFunction;
 
 /**
  * Note: This class has no state.
@@ -63,7 +65,6 @@ public class DefaultDependencyManager extends AbstractDependencyManager {
     public Task checkGameCompletionAsync(Version version) {
         return new ParallelTask(
                 new GameAssetDownloadTask(this, version),
-                new GameLoggingDownloadTask(this, version),
                 new GameLibrariesTask(this, version)
         );
     }
@@ -77,7 +78,7 @@ public class DefaultDependencyManager extends AbstractDependencyManager {
     }
 
     @Override
-    public Task installLibraryAsync(Version version, RemoteVersion<?> libraryVersion) {
+    public Task installLibraryAsync(Version version, RemoteVersion libraryVersion) {
         if (libraryVersion instanceof ForgeRemoteVersion)
             return new ForgeInstallTask(this, version, (ForgeRemoteVersion) libraryVersion)
                     .then(variables -> new LibrariesUniqueTask(variables.get("version")))
@@ -97,4 +98,8 @@ public class DefaultDependencyManager extends AbstractDependencyManager {
             throw new IllegalArgumentException("Remote library " + libraryVersion + " is unrecognized.");
     }
 
+
+    public ExceptionalFunction<AutoTypingMap<String>, Task, ?> installLibraryAsync(RemoteVersion libraryVersion) {
+        return var -> installLibraryAsync(var.get("version"), libraryVersion);
+    }
 }

HMCLCore/src/main/java/org/jackhuang/hmcl/download/DefaultGameBuilder.java

@@ -55,7 +55,6 @@ public class DefaultGameBuilder extends GameBuilder {
             variables.set("version", version);
             Task result = new ParallelTask(
                     new GameAssetDownloadTask(dependencyManager, version),
-                    new GameLoggingDownloadTask(dependencyManager, version),
                     downloadGameAsync(gameVersion, version),
                     new GameLibrariesTask(dependencyManager, version) // Game libraries will be downloaded for multiple times partly, this time is for vanilla libraries.
             ).with(new VersionJsonSaveTask(dependencyManager.getGameRepository(), version)); // using [with] because download failure here are tolerant.
@@ -67,8 +66,8 @@ public class DefaultGameBuilder extends GameBuilder {
             if (toolVersions.containsKey("optifine"))
                 result = result.then(libraryTaskHelper(gameVersion, "optifine"));
 
-            for (RemoteVersion<?> remoteVersion : remoteVersions)
-                result = result.then(var -> dependencyManager.installLibraryAsync(var.get("version"), remoteVersion));
+            for (RemoteVersion remoteVersion : remoteVersions)
+                result = result.then(dependencyManager.installLibraryAsync(remoteVersion));
 
             return result;
         }).finalized((variables, isDependentsSucceeded) -> {

HMCLCore/src/main/java/org/jackhuang/hmcl/download/DependencyManager.java

@@ -67,7 +67,7 @@ public interface DependencyManager {
      * @param libraryVersion the remote version of being installed library.
      * @return the task to install the specific library.
      */
-    Task installLibraryAsync(Version version, RemoteVersion<?> libraryVersion);
+    Task installLibraryAsync(Version version, RemoteVersion libraryVersion);
 
     /**
      * Get registered version list.

HMCLCore/src/main/java/org/jackhuang/hmcl/download/GameBuilder.java

@@ -31,7 +31,7 @@ public abstract class GameBuilder {
     protected String name = "";
     protected String gameVersion = "";
     protected final Map<String, String> toolVersions = new HashMap<>();
-    protected final Set<RemoteVersion<?>> remoteVersions = new HashSet<>();
+    protected final Set<RemoteVersion> remoteVersions = new HashSet<>();
 
     public String getName() {
         return name;
@@ -64,7 +64,7 @@ public abstract class GameBuilder {
         return this;
     }
 
-    public GameBuilder version(RemoteVersion<?> remoteVersion) {
+    public GameBuilder version(RemoteVersion remoteVersion) {
         remoteVersions.add(remoteVersion);
         return this;
     }

HMCLCore/src/main/java/org/jackhuang/hmcl/download/MaintainTask.java

@@ -94,7 +94,9 @@ public class MaintainTask extends TaskResult<Version> {
             args.add("optifine.OptiFineForgeTweaker");
         }
 
-        return version.setMinecraftArguments(new CommandBuilder().addAll(args).toString());
+        // Since $ will be escaped in linux, and our maintain of minecraftArgument will not cause escaping,
+        // so we regenerate the minecraftArgument without escaping.
+        return version.setMinecraftArguments(new CommandBuilder().addAllWithoutParsing(args).toString());
     }
 
     @Override

HMCLCore/src/main/java/org/jackhuang/hmcl/download/MojangDownloadProvider.java

@@ -20,7 +20,7 @@ package org.jackhuang.hmcl.download;
 import org.jackhuang.hmcl.download.forge.ForgeVersionList;
 import org.jackhuang.hmcl.download.game.GameVersionList;
 import org.jackhuang.hmcl.download.liteloader.LiteLoaderVersionList;
-import org.jackhuang.hmcl.download.optifine.OptiFineVersionList;
+import org.jackhuang.hmcl.download.optifine.OptiFineBMCLVersionList;
 
 /**
  * @see <a href="http://wiki.vg">http://wiki,vg</a>
@@ -48,7 +48,7 @@ public class MojangDownloadProvider implements DownloadProvider {
             case "liteloader":
                 return LiteLoaderVersionList.INSTANCE;
             case "optifine":
-                return OptiFineVersionList.INSTANCE;
+                return OptiFineBMCLVersionList.INSTANCE;
             default:
                 throw new IllegalArgumentException("Unrecognized version list id: " + id);
         }

HMCLCore/src/main/java/org/jackhuang/hmcl/download/RemoteVersion.java

@@ -27,26 +27,36 @@ import java.util.Objects;
  *
  * @author huangyuhui
  */
-public class RemoteVersion<T> implements Comparable<RemoteVersion<T>> {
+public class RemoteVersion implements Comparable<RemoteVersion> {
 
     private final String gameVersion;
     private final String selfVersion;
     private final String url;
-    private final T tag;
+    private final Type type;
 
     /**
      * Constructor.
      *
      * @param gameVersion the Minecraft version that this remote version suits.
      * @param selfVersion the version string of the remote version.
-     * @param url the installer or universal jar URL.
-     * @param tag some necessary information for Installer Task.
+     * @param url         the installer or universal jar URL.
      */
-    public RemoteVersion(String gameVersion, String selfVersion, String url, T tag) {
+    public RemoteVersion(String gameVersion, String selfVersion, String url) {
+        this(gameVersion, selfVersion, url, Type.UNCATEGORIZED);
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param gameVersion the Minecraft version that this remote version suits.
+     * @param selfVersion the version string of the remote version.
+     * @param url         the installer or universal jar URL.
+     */
+    public RemoteVersion(String gameVersion, String selfVersion, String url, Type type) {
         this.gameVersion = Objects.requireNonNull(gameVersion);
         this.selfVersion = Objects.requireNonNull(selfVersion);
         this.url = Objects.requireNonNull(url);
-        this.tag = tag;
+        this.type = Objects.requireNonNull(type);
     }
 
     public String getGameVersion() {
@@ -57,14 +67,14 @@ public class RemoteVersion<T> implements Comparable<RemoteVersion<T>> {
         return selfVersion;
     }
 
-    public T getTag() {
-        return tag;
-    }
-
     public String getUrl() {
         return url;
     }
 
+    public Type getVersionType() {
+        return type;
+    }
+
     @Override
     public boolean equals(Object obj) {
         return obj instanceof RemoteVersion && Objects.equals(selfVersion, ((RemoteVersion) obj).selfVersion);
@@ -80,13 +90,19 @@ public class RemoteVersion<T> implements Comparable<RemoteVersion<T>> {
         return new ToStringBuilder(this)
                 .append("selfVersion", selfVersion)
                 .append("gameVersion", gameVersion)
-                .append("tag", tag)
                 .toString();
     }
 
     @Override
-    public int compareTo(RemoteVersion<T> o) {
+    public int compareTo(RemoteVersion o) {
         // newer versions are smaller than older versions
         return VersionNumber.asVersion(o.selfVersion).compareTo(VersionNumber.asVersion(selfVersion));
     }
+
+    public enum Type {
+        UNCATEGORIZED,
+        RELEASE,
+        SNAPSHOT,
+        OLD
+    }
 }

HMCLCore/src/main/java/org/jackhuang/hmcl/download/VersionList.java

@@ -26,18 +26,18 @@ import java.util.concurrent.locks.ReentrantReadWriteLock;
 /**
  * The remote version list.
  *
- * @param <T> The type of {@code RemoteVersion<T>}, the type of tags.
+ * @param <T> The subclass of {@code RemoteVersion}, the type of RemoteVersion.
  *
  * @author huangyuhui
  */
-public abstract class VersionList<T> {
+public abstract class VersionList<T extends RemoteVersion> {
 
     /**
      * the remote version list.
      * key: game version.
      * values: corresponding remote versions.
      */
-    protected final SimpleMultimap<String, RemoteVersion<T>> versions = new SimpleMultimap<String, RemoteVersion<T>>(HashMap::new, TreeSet::new);
+    protected final SimpleMultimap<String, T> versions = new SimpleMultimap<String, T>(HashMap::new, TreeSet::new);
 
     /**
      * True if the version list has been loaded.
@@ -46,6 +46,8 @@ public abstract class VersionList<T> {
         return !versions.isEmpty();
     }
 
+    public abstract boolean hasType();
+
     protected final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
 
     /**
@@ -68,11 +70,10 @@ public abstract class VersionList<T> {
         });
     }
 
-    private Collection<RemoteVersion<T>> getVersionsImpl(String gameVersion) {
+    private Collection<T> getVersionsImpl(String gameVersion) {
         lock.readLock().lock();
         try {
-            Collection<RemoteVersion<T>> ans = versions.get(gameVersion);
-            return ans.isEmpty() ? versions.values() : ans;
+            return versions.get(gameVersion);
         } finally {
             lock.readLock().unlock();
         }
@@ -84,7 +85,7 @@ public abstract class VersionList<T> {
      * @param gameVersion the Minecraft version that remote versions belong to
      * @return the collection of specific remote versions
      */
-    public final Collection<RemoteVersion<T>> getVersions(String gameVersion) {
+    public final Collection<T> getVersions(String gameVersion) {
         return Collections.unmodifiableCollection(getVersionsImpl(gameVersion));
     }
 
@@ -95,11 +96,11 @@ public abstract class VersionList<T> {
      * @param remoteVersion the version of the remote version.
      * @return the specific remote version, null if it is not found.
      */
-    public final Optional<RemoteVersion<T>> getVersion(String gameVersion, String remoteVersion) {
+    public final Optional<T> getVersion(String gameVersion, String remoteVersion) {
         lock.readLock().lock();
         try {
-            RemoteVersion<T> result = null;
-            for (RemoteVersion<T> it : versions.get(gameVersion))
+            T result = null;
+            for (T it : versions.get(gameVersion))
                 if (remoteVersion.equals(it.getSelfVersion()))
                     result = it;
             return Optional.ofNullable(result);

HMCLCore/src/main/java/org/jackhuang/hmcl/download/forge/ForgeRemoteVersion.java

@@ -19,7 +19,7 @@ package org.jackhuang.hmcl.download.forge;
 
 import org.jackhuang.hmcl.download.RemoteVersion;
 
-public class ForgeRemoteVersion extends RemoteVersion<Void> {
+public class ForgeRemoteVersion extends RemoteVersion {
     /**
      * Constructor.
      *
@@ -28,6 +28,6 @@ public class ForgeRemoteVersion extends RemoteVersion<Void> {
      * @param url         the installer or universal jar URL.
      */
     public ForgeRemoteVersion(String gameVersion, String selfVersion, String url) {
-        super(gameVersion, selfVersion, url, null);
+        super(gameVersion, selfVersion, url);
     }
 }

HMCLCore/src/main/java/org/jackhuang/hmcl/download/forge/ForgeVersionList.java

@@ -32,13 +32,18 @@ import java.util.*;
  *
  * @author huangyuhui
  */
-public final class ForgeVersionList extends VersionList<Void> {
+public final class ForgeVersionList extends VersionList<ForgeRemoteVersion> {
 
     public static final ForgeVersionList INSTANCE = new ForgeVersionList();
 
     private ForgeVersionList() {
     }
 
+    @Override
+    public boolean hasType() {
+        return false;
+    }
+
     @Override
     public Task refreshAsync(DownloadProvider downloadProvider) {
         final GetTask task = new GetTask(NetworkUtils.toURL(downloadProvider.injectURL(FORGE_LIST)));

HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameAssetDownloadTask.java

@@ -75,8 +75,6 @@ public final class GameAssetDownloadTask extends Task {
     
     @Override
     public void execute() throws Exception {
-        int size = refreshTask.getResult().size();
-        int downloaded = 0;
         for (Map.Entry<File, AssetObject> entry : refreshTask.getResult()) {
             if (Thread.interrupted())
                 throw new InterruptedException();
@@ -88,29 +86,11 @@ public final class GameAssetDownloadTask extends Task {
                 Logging.LOG.log(Level.SEVERE, "Unable to create new file " + file + ", because parent directory cannot be created");
                 continue;
             }
-            if (file.isDirectory())
+            if (file.isDirectory() || file.isFile() && file.exists())
                 continue;
-            boolean flag = true;
-            try {
-                // check the checksum of file to ensure that the file is not need to re-download.
-                if (file.exists()) {
-                    String sha1 = encodeHex(digest("SHA-1", FileUtils.readBytes(file)));
-                    if (sha1.equals(assetObject.getHash())) {
-                        ++downloaded;
-                        Logging.LOG.finest("File $file has been downloaded successfully, skipped downloading");
-                        updateProgress(downloaded, size);
-                        continue;
-                    }
-                }
-            } catch (IOException e) {
-                Logging.LOG.log(Level.WARNING, "Unable to get hash code of file " + file, e);
-                flag = !file.exists();
-            }
-            if (flag) {
-                FileDownloadTask task = new FileDownloadTask(NetworkUtils.toURL(url), file, new IntegrityCheck("SHA-1", assetObject.getHash()));
-                task.setName(assetObject.getHash());
-                dependencies.add(task);
-            }
+            FileDownloadTask task = new FileDownloadTask(NetworkUtils.toURL(url), file, new IntegrityCheck("SHA-1", assetObject.getHash()));
+            task.setName(assetObject.getHash());
+            dependencies.add(task);
         }
     }
     

HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameLoggingDownloadTask.java

@@ -1,72 +0,0 @@
-/*
- * Hello Minecraft! Launcher.
- * Copyright (C) 2018  huangyuhui <[email protected]>
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see {http://www.gnu.org/licenses/}.
- */
-package org.jackhuang.hmcl.download.game;
-
-import org.jackhuang.hmcl.download.DependencyManager;
-import org.jackhuang.hmcl.game.DownloadType;
-import org.jackhuang.hmcl.game.LoggingInfo;
-import org.jackhuang.hmcl.game.Version;
-import org.jackhuang.hmcl.task.FileDownloadTask;
-import org.jackhuang.hmcl.task.Task;
-import org.jackhuang.hmcl.util.NetworkUtils;
-
-import java.io.File;
-import java.util.Collection;
-import java.util.LinkedList;
-import java.util.List;
-
-/**
- * This task is to download log4j configuration file provided in minecraft.json.
- *
- * @author huangyuhui
- */
-public final class GameLoggingDownloadTask extends Task {
-
-    private final DependencyManager dependencyManager;
-    private final Version version;
-    private final List<Task> dependencies = new LinkedList<>();
-
-    /**
-     * Constructor.
-     *
-     * @param dependencyManager the dependency manager that can provides {@link org.jackhuang.hmcl.game.GameRepository}
-     * @param version the <b>resolved</b> version
-     */
-    public GameLoggingDownloadTask(DependencyManager dependencyManager, Version version) {
-        this.dependencyManager = dependencyManager;
-        this.version = version;
-        setSignificance(TaskSignificance.MODERATE);
-    }
-
-    @Override
-    public Collection<Task> getDependencies() {
-        return dependencies;
-    }
-
-    @Override
-    public void execute() {
-        if (version.getLogging() == null || !version.getLogging().containsKey(DownloadType.CLIENT))
-            return;
-
-        LoggingInfo logging = version.getLogging().get(DownloadType.CLIENT);
-        File file = dependencyManager.getGameRepository().getLoggingObject(version.getId(), version.getAssetIndex().getId(), logging);
-        if (!file.exists())
-            dependencies.add(new FileDownloadTask(NetworkUtils.toURL(logging.getFile().getUrl()), file));
-    }
-
-}

HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameRemoteVersion.java

@@ -17,12 +17,9 @@
  */
 package org.jackhuang.hmcl.download.game;
 
-import com.google.gson.JsonParseException;
-import com.google.gson.annotations.SerializedName;
+import org.jackhuang.hmcl.download.RemoteVersion;
 import org.jackhuang.hmcl.game.ReleaseType;
-import org.jackhuang.hmcl.util.Constants;
-import org.jackhuang.hmcl.util.StringUtils;
-import org.jackhuang.hmcl.util.Validation;
+import org.jackhuang.hmcl.util.Immutable;
 
 import java.util.Date;
 
@@ -30,64 +27,45 @@ import java.util.Date;
  *
  * @author huangyuhui
  */
-public final class GameRemoteVersion implements Validation {
+@Immutable
+public final class GameRemoteVersion extends RemoteVersion {
 
-    @SerializedName("id")
-    private final String gameVersion;
-
-    @SerializedName("time")
+    private final ReleaseType type;
     private final Date time;
 
-    @SerializedName("releaseTime")
-    private final Date releaseTime;
-
-    @SerializedName("type")
-    private final ReleaseType type;
-
-    @SerializedName("url")
-    private final String url;
-
-    public GameRemoteVersion() {
-        this("", new Date(), new Date(), ReleaseType.UNKNOWN);
-    }
-
-    public GameRemoteVersion(String gameVersion, Date time, Date releaseTime, ReleaseType type) {
-        this(gameVersion, time, releaseTime, type, Constants.DEFAULT_LIBRARY_URL + gameVersion + "/" + gameVersion + ".json");
-    }
-
-    public GameRemoteVersion(String gameVersion, Date time, Date releaseTime, ReleaseType type, String url) {
-        this.gameVersion = gameVersion;
-        this.time = time;
-        this.releaseTime = releaseTime;
+    public GameRemoteVersion(String gameVersion, String selfVersion, String url, ReleaseType type, Date time) {
+        super(gameVersion, selfVersion, url, getReleaseType(type));
         this.type = type;
-        this.url = url;
-    }
-
-    public String getGameVersion() {
-        return gameVersion;
+        this.time = time;
     }
 
     public Date getTime() {
         return time;
     }
 
-    public Date getReleaseTime() {
-        return releaseTime;
-    }
-
     public ReleaseType getType() {
         return type;
     }
 
-    public String getUrl() {
-        return url;
-    }
-    
     @Override
-    public void validate() throws JsonParseException {
-        if (StringUtils.isBlank(gameVersion))
-            throw new JsonParseException("GameRemoteVersion id cannot be blank");
-        if (StringUtils.isBlank(url))
-            throw new JsonParseException("GameRemoteVersion url cannot be blank");
+    public int compareTo(RemoteVersion o) {
+        if (!(o instanceof GameRemoteVersion))
+            return 0;
+
+        return ((GameRemoteVersion) o).getTime().compareTo(getTime());
+    }
+
+    private static Type getReleaseType(ReleaseType type) {
+        if (type == null) return Type.UNCATEGORIZED;
+        switch (type) {
+            case RELEASE:
+                return Type.RELEASE;
+            case SNAPSHOT:
+                return Type.SNAPSHOT;
+            case UNKNOWN:
+                return Type.UNCATEGORIZED;
+            default:
+                return Type.OLD;
+        }
     }
 }

HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameRemoteVersionInfo.java

@@ -0,0 +1,93 @@
+/*
+ * Hello Minecraft! Launcher.
+ * Copyright (C) 2018  huangyuhui <[email protected]>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see {http://www.gnu.org/licenses/}.
+ */
+package org.jackhuang.hmcl.download.game;
+
+import com.google.gson.JsonParseException;
+import com.google.gson.annotations.SerializedName;
+import org.jackhuang.hmcl.game.ReleaseType;
+import org.jackhuang.hmcl.util.Constants;
+import org.jackhuang.hmcl.util.StringUtils;
+import org.jackhuang.hmcl.util.Validation;
+
+import java.util.Date;
+
+/**
+ *
+ * @author huangyuhui
+ */
+public final class GameRemoteVersionInfo implements Validation {
+
+    @SerializedName("id")
+    private final String gameVersion;
+
+    @SerializedName("time")
+    private final Date time;
+
+    @SerializedName("releaseTime")
+    private final Date releaseTime;
+
+    @SerializedName("type")
+    private final ReleaseType type;
+
+    @SerializedName("url")
+    private final String url;
+
+    public GameRemoteVersionInfo() {
+        this("", new Date(), new Date(), ReleaseType.UNKNOWN);
+    }
+
+    public GameRemoteVersionInfo(String gameVersion, Date time, Date releaseTime, ReleaseType type) {
+        this(gameVersion, time, releaseTime, type, Constants.DEFAULT_LIBRARY_URL + gameVersion + "/" + gameVersion + ".json");
+    }
+
+    public GameRemoteVersionInfo(String gameVersion, Date time, Date releaseTime, ReleaseType type, String url) {
+        this.gameVersion = gameVersion;
+        this.time = time;
+        this.releaseTime = releaseTime;
+        this.type = type;
+        this.url = url;
+    }
+
+    public String getGameVersion() {
+        return gameVersion;
+    }
+
+    public Date getTime() {
+        return time;
+    }
+
+    public Date getReleaseTime() {
+        return releaseTime;
+    }
+
+    public ReleaseType getType() {
+        return type;
+    }
+
+    public String getUrl() {
+        return url;
+    }
+    
+    @Override
+    public void validate() throws JsonParseException {
+        if (StringUtils.isBlank(gameVersion))
+            throw new JsonParseException("GameRemoteVersion id cannot be blank");
+        if (StringUtils.isBlank(url))
+            throw new JsonParseException("GameRemoteVersion url cannot be blank");
+    }
+}

HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameRemoteVersionTag.java

@@ -1,55 +0,0 @@
-/*
- * Hello Minecraft! Launcher.
- * Copyright (C) 2018  huangyuhui <[email protected]>
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see {http://www.gnu.org/licenses/}.
- */
-package org.jackhuang.hmcl.download.game;
-
-import org.jackhuang.hmcl.game.ReleaseType;
-import org.jackhuang.hmcl.util.Immutable;
-
-import java.util.Date;
-
-/**
- *
- * @author huangyuhui
- */
-@Immutable
-public final class GameRemoteVersionTag {
-
-    private final ReleaseType type;
-    private final Date time;
-
-    /**
-     * No-arg constructor for Gson.
-     */
-    @SuppressWarnings("unused")
-    public GameRemoteVersionTag() {
-        this(ReleaseType.UNKNOWN, new Date());
-    }
-
-    public GameRemoteVersionTag(ReleaseType type, Date time) {
-        this.type = type;
-        this.time = time;
-    }
-
-    public Date getTime() {
-        return time;
-    }
-
-    public ReleaseType getType() {
-        return type;
-    }
-}

HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameRemoteVersions.java

@@ -31,7 +31,7 @@ import java.util.List;
 public final class GameRemoteVersions {
 
     @SerializedName("versions")
-    private final List<GameRemoteVersion> versions;
+    private final List<GameRemoteVersionInfo> versions;
 
     @SerializedName("latest")
     private final GameRemoteLatestVersions latest;
@@ -44,7 +44,7 @@ public final class GameRemoteVersions {
         this(Collections.emptyList(), null);
     }
 
-    public GameRemoteVersions(List<GameRemoteVersion> versions, GameRemoteLatestVersions latest) {
+    public GameRemoteVersions(List<GameRemoteVersionInfo> versions, GameRemoteLatestVersions latest) {
         this.versions = versions;
         this.latest = latest;
     }
@@ -53,7 +53,7 @@ public final class GameRemoteVersions {
         return latest;
     }
 
-    public List<GameRemoteVersion> getVersions() {
+    public List<GameRemoteVersionInfo> getVersions() {
         return versions;
     }
 

HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameVersionList.java

@@ -32,13 +32,18 @@ import java.util.Collections;
  *
  * @author huangyuhui
  */
-public final class GameVersionList extends VersionList<GameRemoteVersionTag> {
+public final class GameVersionList extends VersionList<GameRemoteVersion> {
 
     public static final GameVersionList INSTANCE = new GameVersionList();
 
     private GameVersionList() {
     }
 
+    @Override
+    public boolean hasType() {
+        return true;
+    }
+
     @Override
     public Task refreshAsync(DownloadProvider downloadProvider) {
         GetTask task = new GetTask(NetworkUtils.toURL(downloadProvider.getVersionListURL()));
@@ -56,12 +61,12 @@ public final class GameVersionList extends VersionList<GameRemoteVersionTag> {
                     versions.clear();
 
                     GameRemoteVersions root = Constants.GSON.fromJson(task.getResult(), GameRemoteVersions.class);
-                    for (GameRemoteVersion remoteVersion : root.getVersions()) {
-                        versions.put(remoteVersion.getGameVersion(), new RemoteVersionGame(
+                    for (GameRemoteVersionInfo remoteVersion : root.getVersions()) {
+                        versions.put(remoteVersion.getGameVersion(), new GameRemoteVersion(
                                 remoteVersion.getGameVersion(),
                                 remoteVersion.getGameVersion(),
                                 remoteVersion.getUrl(),
-                                new GameRemoteVersionTag(remoteVersion.getType(), remoteVersion.getReleaseTime()))
+                                remoteVersion.getType(), remoteVersion.getReleaseTime())
                         );
                     }
                 } finally {
@@ -70,15 +75,4 @@ public final class GameVersionList extends VersionList<GameRemoteVersionTag> {
             }
         };
     }
-
-    private static class RemoteVersionGame extends RemoteVersion<GameRemoteVersionTag> {
-        public RemoteVersionGame(String gameVersion, String selfVersion, String url, GameRemoteVersionTag tag) {
-            super(gameVersion, selfVersion, url, tag);
-        }
-
-        @Override
-        public int compareTo(RemoteVersion<GameRemoteVersionTag> o) {
-            return o.getTag().getTime().compareTo(getTag().getTime());
-        }
-    }
 }

HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/LibraryDownloadTask.java

@@ -12,7 +12,10 @@ import org.jackhuang.hmcl.util.NetworkUtils;
 import org.tukaani.xz.XZInputStream;
 
 import java.io.*;
+import java.net.URL;
 import java.nio.charset.Charset;
+import java.nio.file.Files;
+import java.nio.file.Paths;
 import java.util.*;
 import java.util.jar.JarEntry;
 import java.util.jar.JarInputStream;
@@ -23,15 +26,15 @@ import static org.jackhuang.hmcl.util.DigestUtils.digest;
 import static org.jackhuang.hmcl.util.Hex.encodeHex;
 
 public final class LibraryDownloadTask extends Task {
-    private final FileDownloadTask xzTask;
-    private final FileDownloadTask task;
+    private final LibraryDownloadTaskHelper helperTask;
     private final File jar;
     private final File xzFile;
     private final Library library;
-
-    private boolean downloaded = false;
+    private boolean xz;
 
     public LibraryDownloadTask(AbstractDependencyManager dependencyManager, File file, Library library) {
+        setSignificance(TaskSignificance.MODERATE);
+
         if (library.is("net.minecraftforge", "forge"))
             library = library.setClassifier("universal");
 
@@ -42,20 +45,12 @@ public final class LibraryDownloadTask extends Task {
 
         xzFile = new File(file.getAbsoluteFile().getParentFile(), file.getName() + ".pack.xz");
 
-        xzTask = new FileDownloadTask(NetworkUtils.toURL(url + ".pack.xz"),
-                xzFile, null, 1);
-        xzTask.setSignificance(TaskSignificance.MINOR);
-
-        setSignificance(TaskSignificance.MODERATE);
-
-        task = new FileDownloadTask(NetworkUtils.toURL(url),
-                file,
-                library.getDownload().getSha1() != null ? new IntegrityCheck("SHA-1", library.getDownload().getSha1()) : null);
+        helperTask = new LibraryDownloadTaskHelper(file, url);
     }
 
     @Override
     public Collection<? extends Task> getDependents() {
-        return library.getChecksums() != null ? Collections.singleton(xzTask) : Collections.singleton(task);
+        return Collections.singleton(helperTask);
     }
 
     @Override
@@ -66,32 +61,75 @@ public final class LibraryDownloadTask extends Task {
     @Override
     public void execute() throws Exception {
         if (!isDependentsSucceeded()) {
-            // Since FileDownloadTask wraps the actual exception with another IOException.
-            // We should extract it letting the error message clearer.
-            Throwable t = library.getChecksums() != null ? xzTask.getLastException() : task.getLastException();
-            if (t.getCause() != null && t.getCause() != t)
-                throw new LibraryDownloadException(library, t.getCause());
-            else
-                throw new LibraryDownloadException(library, t);
+            if (helperTask.task == null) {
+                // NetworkUtils.URLExists failed.
+                throw new LibraryDownloadException(library, helperTask.getLastException());
+            } else {
+                // Since FileDownloadTask wraps the actual exception with another IOException.
+                // We should extract it letting the error message clearer.
+                Throwable t = helperTask.task.getLastException();
+                if (t.getCause() != null && t.getCause() != t)
+                    throw new LibraryDownloadException(library, t.getCause());
+                else
+                    throw new LibraryDownloadException(library, t);
+            }
+        } else {
+            if (xz) unpackLibrary(jar, FileUtils.readBytes(xzFile));
+            if (!checksumValid(jar, library.getChecksums())) {
+                jar.delete();
+                throw new IOException("Checksum failed for " + library);
+            }
+        }
+    }
+
+    private class LibraryDownloadTaskHelper extends Task {
+        private FileDownloadTask task;
+        private final File file;
+        private final String url;
+
+        public LibraryDownloadTaskHelper(File file, String url) {
+            this.file = file;
+            this.url = url;
+
+            setName(library.getName());
         }
 
-        if (library.getChecksums() != null) {
-            unpackLibrary(jar, FileUtils.readBytes(xzFile));
-            if (!checksumValid(jar, library.getChecksums()))
-                throw new IOException("Checksum failed for " + library);
+        @Override
+        public boolean isRelyingOnDependencies() {
+            return true;
+        }
+
+        @Override
+        public Collection<? extends Task> getDependencies() {
+            return Collections.singleton(task);
+        }
+
+        @Override
+        public void execute() throws Exception {
+            URL packXz = NetworkUtils.toURL(url + ".pack.xz");
+            if (NetworkUtils.URLExists(packXz)) {
+                task = new FileDownloadTask(packXz, xzFile, null);
+                xz = true;
+            } else {
+                task = new FileDownloadTask(NetworkUtils.toURL(url),
+                        file,
+                        library.getDownload().getSha1() != null ? new IntegrityCheck("SHA-1", library.getDownload().getSha1()) : null);
+                xz = false;
+            }
         }
     }
 
     private static boolean checksumValid(File libPath, List<String> checksums) {
         try {
-            if ((checksums == null) || (checksums.isEmpty())) {
+            if (checksums == null || checksums.isEmpty()) {
                 return true;
             }
             byte[] fileData = FileUtils.readBytes(libPath);
             boolean valid = checksums.contains(encodeHex(digest("SHA-1", fileData)));
-            if ((!valid) && (libPath.getName().endsWith(".jar"))) {
+            if (!valid && libPath.getName().endsWith(".jar")) {
+                valid = validateJar(fileData, checksums);
             }
-            return validateJar(fileData, checksums);
+            return valid;
         } catch (IOException e) {
             e.printStackTrace();
         }
@@ -104,7 +142,7 @@ public final class LibraryDownloadTask extends Task {
         JarInputStream jar = new JarInputStream(new ByteArrayInputStream(data));
         JarEntry entry = jar.getNextJarEntry();
         while (entry != null) {
-            byte[] eData = IOUtils.readFullyAsByteArray(jar);
+            byte[] eData = IOUtils.readFullyWithoutClosing(jar);
             if (entry.getName().equals("checksums.sha1")) {
                 hashes = new String(eData, Charset.forName("UTF-8")).split("\n");
             }
@@ -115,8 +153,8 @@ public final class LibraryDownloadTask extends Task {
         }
         jar.close();
         if (hashes != null) {
-            boolean passed = !checksums.contains(files.get("checksums.sha1"));
-            if (passed) {
+            boolean failed = !checksums.contains(files.get("checksums.sha1"));
+            if (!failed) {
                 for (String hash : hashes) {
                     if ((!hash.trim().equals("")) && (hash.contains(" "))) {
                         String[] e = hash.split(" ");
@@ -125,17 +163,17 @@ public final class LibraryDownloadTask extends Task {
                         String checksum = files.get(target);
                         if ((!files.containsKey(target)) || (checksum == null)) {
                             Logging.LOG.warning("    " + target + " : missing");
-                            passed = false;
+                            failed = true;
                             break;
                         } else if (!checksum.equals(validChecksum)) {
                             Logging.LOG.warning("    " + target + " : failed (" + checksum + ", " + validChecksum + ")");
-                            passed = false;
+                            failed = true;
                             break;
                         }
                     }
                 }
             }
-            return passed;
+            return !failed;
         }
         return false;
     }

HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/VersionJsonDownloadTask.java

@@ -62,7 +62,7 @@ public final class VersionJsonDownloadTask extends Task {
 
     @Override
     public void execute() {
-        RemoteVersion<?> remoteVersion = gameVersionList.getVersions(gameVersion).stream().findFirst()
+        RemoteVersion remoteVersion = gameVersionList.getVersions(gameVersion).stream().findFirst()
                 .orElseThrow(() -> new IllegalStateException("Cannot find specific version " + gameVersion + " in remote repository"));
         String jsonURL = dependencyManager.getDownloadProvider().injectURL(remoteVersion.getUrl());
         dependencies.add(new GetTask(NetworkUtils.toURL(jsonURL), ID));

HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderBMCLVersionList.java

@@ -39,13 +39,18 @@ import java.util.Optional;
  *
  * @author huangyuhui
  */
-public final class LiteLoaderBMCLVersionList extends VersionList<LiteLoaderRemoteVersionTag> {
+public final class LiteLoaderBMCLVersionList extends VersionList<LiteLoaderRemoteVersion> {
 
     public static final LiteLoaderBMCLVersionList INSTANCE = new LiteLoaderBMCLVersionList();
 
     private LiteLoaderBMCLVersionList() {
     }
 
+    @Override
+    public boolean hasType() {
+        return false;
+    }
+
     @Override
     public Task refreshAsync(DownloadProvider downloadProvider) {
         GetTask task = new GetTask(NetworkUtils.toURL(downloadProvider.injectURL(LITELOADER_LIST)));

HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderInstallTask.java

@@ -74,7 +74,7 @@ public final class LiteLoaderInstallTask extends TaskResult<Version> {
                 new LibrariesDownloadInfo(new LibraryDownloadInfo(null, remote.getUrl()))
         );
 
-        Version tempVersion = version.setLibraries(Lang.merge(remote.getTag().getLibraries(), Collections.singleton(library)));
+        Version tempVersion = version.setLibraries(Lang.merge(remote.getLibraries(), Collections.singleton(library)));
 
         String mcArg = version.getMinecraftArguments().orElse("");
         if (mcArg.contains("--tweakClass optifine.OptiFineTweaker"))
@@ -84,7 +84,7 @@ public final class LiteLoaderInstallTask extends TaskResult<Version> {
                 .setMainClass("net.minecraft.launchwrapper.Launch")
                 .setLibraries(Lang.merge(tempVersion.getLibraries(), version.getLibraries()))
                 .setLogging(Collections.emptyMap())
-                .setMinecraftArguments(mcArg + " --tweakClass " + remote.getTag().getTweakClass())
+                .setMinecraftArguments(mcArg + " --tweakClass " + remote.getTweakClass())
                 //.setArguments(Arguments.addGameArguments(Lang.get(version.getArguments()), "--tweakClass", remote.getTag().getTweakClass()))
         );
 

HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderRemoteVersion.java

@@ -22,7 +22,9 @@ import org.jackhuang.hmcl.game.Library;
 
 import java.util.Collection;
 
-public class LiteLoaderRemoteVersion extends RemoteVersion<LiteLoaderRemoteVersionTag> {
+public class LiteLoaderRemoteVersion extends RemoteVersion {
+    private final String tweakClass;
+    private final Collection<Library> libraries;
     /**
      * Constructor.
      *
@@ -31,6 +33,18 @@ public class LiteLoaderRemoteVersion extends RemoteVersion<LiteLoaderRemoteVersi
      * @param url         the installer or universal jar URL.
      */
     LiteLoaderRemoteVersion(String gameVersion, String selfVersion, String url, String tweakClass, Collection<Library> libraries) {
-        super(gameVersion, selfVersion, url, new LiteLoaderRemoteVersionTag(tweakClass, libraries));
+        super(gameVersion, selfVersion, url);
+
+        this.tweakClass = tweakClass;
+        this.libraries = libraries;
     }
+
+    public Collection<Library> getLibraries() {
+        return libraries;
+    }
+
+    public String getTweakClass() {
+        return tweakClass;
+    }
+
 }

HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderRemoteVersionTag.java

@@ -1,54 +0,0 @@
-/*
- * Hello Minecraft! Launcher.
- * Copyright (C) 2018  huangyuhui <[email protected]>
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see {http://www.gnu.org/licenses/}.
- */
-package org.jackhuang.hmcl.download.liteloader;
-
-import org.jackhuang.hmcl.game.Library;
-
-import java.util.Collection;
-import java.util.Collections;
-
-/**
- *
- * @author huangyuhui
- */
-public final class LiteLoaderRemoteVersionTag {
-    private final String tweakClass;
-    private final Collection<Library> libraries;
-
-    /**
-     * No-arg constructor for Gson.
-     */
-    @SuppressWarnings("unused")
-    public LiteLoaderRemoteVersionTag() {
-        this("", Collections.emptySet());
-    }
-
-    public LiteLoaderRemoteVersionTag(String tweakClass, Collection<Library> libraries) {
-        this.tweakClass = tweakClass;
-        this.libraries = libraries;
-    }
-
-    public Collection<Library> getLibraries() {
-        return libraries;
-    }
-
-    public String getTweakClass() {
-        return tweakClass;
-    }
-    
-}

HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderVersionList.java

@@ -39,13 +39,18 @@ import java.util.Optional;
  *
  * @author huangyuhui
  */
-public final class LiteLoaderVersionList extends VersionList<LiteLoaderRemoteVersionTag> {
+public final class LiteLoaderVersionList extends VersionList<LiteLoaderRemoteVersion> {
 
     public static final LiteLoaderVersionList INSTANCE = new LiteLoaderVersionList();
 
     private LiteLoaderVersionList() {
     }
 
+    @Override
+    public boolean hasType() {
+        return false;
+    }
+
     @Override
     public Task refreshAsync(DownloadProvider downloadProvider) {
         GetTask task = new GetTask(NetworkUtils.toURL(downloadProvider.injectURL(LITELOADER_LIST)));

HMCLCore/src/main/java/org/jackhuang/hmcl/download/optifine/OptiFineBMCLVersionList.java

@@ -33,13 +33,18 @@ import java.util.*;
  *
  * @author huangyuhui
  */
-public final class OptiFineBMCLVersionList extends VersionList<Void> {
+public final class OptiFineBMCLVersionList extends VersionList<OptiFineRemoteVersion> {
 
     public static final OptiFineBMCLVersionList INSTANCE = new OptiFineBMCLVersionList();
 
     private OptiFineBMCLVersionList() {
     }
 
+    @Override
+    public boolean hasType() {
+        return true;
+    }
+
     @Override
     public Task refreshAsync(DownloadProvider downloadProvider) {
         GetTask task = new GetTask(NetworkUtils.toURL("http://bmclapi2.bangbang93.com/optifine/versionlist"));
@@ -57,16 +62,16 @@ public final class OptiFineBMCLVersionList extends VersionList<Void> {
                 }.getType());
                 for (OptiFineVersion element : root) {
                     String version = element.getType() + "_" + element.getPatch();
-                    if (element.getType() == null || "pre".equals(element.getPatch()))
-                        continue;
                     String mirror = "http://bmclapi2.bangbang93.com/optifine/" + element.getGameVersion() + "/" + element.getType() + "/" + element.getPatch();
                     if (!duplicates.add(mirror))
                         continue;
 
+                    boolean isPre = element.getPatch() != null && (element.getPatch().equals("pre") || element.getPatch().startsWith("alpha"));
+
                     if (StringUtils.isBlank(element.getGameVersion()))
                         continue;
                     VersionNumber.parseVersion(element.getGameVersion())
-                            .ifPresent(gameVersion -> versions.put(gameVersion, new OptiFineRemoteVersion(gameVersion, version, () -> mirror)));
+                            .ifPresent(gameVersion -> versions.put(gameVersion, new OptiFineRemoteVersion(gameVersion, version, () -> mirror, isPre)));
                 }
             }
         };

HMCLCore/src/main/java/org/jackhuang/hmcl/download/optifine/OptiFineRemoteVersion.java

@@ -21,11 +21,11 @@ import org.jackhuang.hmcl.download.RemoteVersion;
 
 import java.util.function.Supplier;
 
-public class OptiFineRemoteVersion extends RemoteVersion<Void> {
+public class OptiFineRemoteVersion extends RemoteVersion {
     private final Supplier<String> url;
 
-    public OptiFineRemoteVersion(String gameVersion, String selfVersion, Supplier<String> url) {
-        super(gameVersion, selfVersion, "", null);
+    public OptiFineRemoteVersion(String gameVersion, String selfVersion, Supplier<String> url, boolean snapshot) {
+        super(gameVersion, selfVersion, "", snapshot ? Type.SNAPSHOT : Type.RELEASE);
 
         this.url = url;
     }

HMCLCore/src/main/java/org/jackhuang/hmcl/download/optifine/OptiFineVersionList.java

@@ -1,121 +0,0 @@
-/*
- * Hello Minecraft! Launcher.
- * Copyright (C) 2018  huangyuhui <[email protected]>
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see {http://www.gnu.org/licenses/}.
- */
-package org.jackhuang.hmcl.download.optifine;
-
-import org.jackhuang.hmcl.download.DownloadProvider;
-import org.jackhuang.hmcl.download.VersionList;
-import org.jackhuang.hmcl.task.GetTask;
-import org.jackhuang.hmcl.task.Task;
-import org.jackhuang.hmcl.util.Lang;
-import org.jackhuang.hmcl.util.NetworkUtils;
-import org.w3c.dom.Document;
-import org.w3c.dom.Element;
-import org.w3c.dom.NodeList;
-
-import javax.xml.parsers.DocumentBuilder;
-import javax.xml.parsers.DocumentBuilderFactory;
-import java.io.ByteArrayInputStream;
-import java.io.IOException;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-/**
- *
- * @author huangyuhui
- */
-public final class OptiFineVersionList extends VersionList<Void> {
-
-    private static final Pattern PATTERN = Pattern.compile("OptiFine (.*?) ");
-    private static final Pattern LINK_PATTERN = Pattern.compile("\"downloadx\\?f=OptiFine(.*)\"");
-
-    public static final OptiFineVersionList INSTANCE = new OptiFineVersionList();
-
-    private OptiFineVersionList() {
-    }
-
-    @Override
-    public Task refreshAsync(DownloadProvider downloadProvider) {
-        GetTask task = new GetTask(NetworkUtils.toURL("https://optifine.net/downloads"));
-        return new Task() {
-            @Override
-            public Collection<Task> getDependents() {
-                return Collections.singleton(task);
-            }
-
-            @Override
-            public void execute() throws Exception {
-                lock.writeLock().lock();
-
-                try {
-                    versions.clear();
-
-                    String html = task.getResult().replace("&nbsp;", " ").replace("&gt;", ">").replace("&lt;", "<").replace("<br>", "<br />");
-
-                    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
-                    DocumentBuilder db = factory.newDocumentBuilder();
-                    Document doc = db.parse(new ByteArrayInputStream(html.getBytes("UTF-8")));
-                    Element r = doc.getDocumentElement();
-                    NodeList tables = r.getElementsByTagName("table");
-                    for (int i = 0; i < tables.getLength(); i++) {
-                        Element e = (Element) tables.item(i);
-                        if ("downloadTable".equals(e.getAttribute("class"))) {
-                            NodeList tr = e.getElementsByTagName("tr");
-                            for (int k = 0; k < tr.getLength(); k++) {
-                                NodeList downloadLine = ((Element) tr.item(k)).getElementsByTagName("td");
-                                String url = null, version = null, gameVersion = null;
-                                for (int j = 0; j < downloadLine.getLength(); j++) {
-                                    Element td = (Element) downloadLine.item(j);
-                                    if (td.getAttribute("class") != null && td.getAttribute("class").startsWith("downloadLineMirror"))
-                                        url = ((Element) td.getElementsByTagName("a").item(0)).getAttribute("href");
-                                    if (td.getAttribute("class") != null && td.getAttribute("class").startsWith("downloadLineFile"))
-                                        version = td.getTextContent();
-                                }
-                                if (version == null || url == null)
-                                    continue;
-
-                                Matcher matcher = PATTERN.matcher(version);
-                                while (matcher.find())
-                                    gameVersion = matcher.group(1);
-                                if (gameVersion == null)
-                                    continue;
-
-                                String finalURL = url;
-                                versions.put(gameVersion, new OptiFineRemoteVersion(gameVersion, version, Lang.hideException(() -> getLink(finalURL))));
-                            }
-                        }
-                    }
-                } finally {
-                    lock.writeLock().unlock();
-                }
-            }
-        };
-    }
-
-    private static String getLink(String url) throws IOException {
-        String result = null;
-        String content = NetworkUtils.doGet(NetworkUtils.toURL(url));
-        Matcher m = LINK_PATTERN.matcher(content);
-        while (m.find())
-            result = m.group(1);
-        if (result == null)
-            throw new IllegalStateException("Cannot find version in " + content);
-        return "https://optifine.net/downloadx?f=OptiFine" + result;
-    }
-}

HMCLCore/src/main/java/org/jackhuang/hmcl/game/Arguments.java

@@ -82,7 +82,7 @@ public final class Arguments {
     }
 
     public static List<String> parseStringArguments(List<String> arguments, Map<String, String> keys) {
-        return arguments.stream().map(str -> keys.getOrDefault(str, str)).collect(Collectors.toList());
+        return arguments.stream().flatMap(str -> new StringArgument(str).toString(keys, Collections.emptyMap()).stream()).collect(Collectors.toList());
     }
 
     public static List<String> parseArguments(List<Argument> arguments, Map<String, String> keys) {

HMCLCore/src/main/java/org/jackhuang/hmcl/game/DefaultGameRepository.java

@@ -160,14 +160,18 @@ public class DefaultGameRepository implements GameRepository {
         if (!file.renameTo(removedFile))
             return false;
 
+        versions.remove(id);
+
+        if (FileUtils.isMovingToTrashSupported()) {
+            return FileUtils.moveToTrash(removedFile);
+        }
+
         // remove json files first to ensure HMCL will not recognize this folder as a valid version.
         List<File> jsons = FileUtils.listFilesByExtension(removedFile, "json");
         jsons.forEach(f -> {
             if (!f.delete())
                 Logging.LOG.warning("Unable to delete file " + f);
         });
-
-        versions.remove(id);
         // remove the version from version list regardless of whether the directory was removed successfully or not.
         try {
             FileUtils.deleteDirectory(removedFile);

HMCLCore/src/main/java/org/jackhuang/hmcl/game/Library.java

@@ -223,6 +223,7 @@ public class Library implements Comparable<Library> {
             obj.addProperty("name", src.getName());
             obj.addProperty("url", src.url);
             obj.add("downloads", context.serialize(src.downloads));
+            obj.add("checksums", context.serialize(src.getChecksums()));
             obj.add("extract", context.serialize(src.extract));
             obj.add("natives", context.serialize(src.natives, new TypeToken<Map<OperatingSystem, String>>() {
             }.getType()));

HMCLCore/src/main/java/org/jackhuang/hmcl/game/RuledArgument.java

@@ -65,7 +65,7 @@ public class RuledArgument implements Argument {
 
     @Override
     public List<String> toString(Map<String, String> keys, Map<String, Boolean> features) {
-        if (CompatibilityRule.appliesToCurrentEnvironment(rules) && value != null)
+        if (CompatibilityRule.appliesToCurrentEnvironment(rules, features) && value != null)
             return value.stream()
                     .map(StringArgument::new)
                     .map(str -> str.toString(keys, features).get(0))

HMCLCore/src/main/java/org/jackhuang/hmcl/launch/DefaultLauncher.java

@@ -47,7 +47,7 @@ public class DefaultLauncher extends Launcher {
         super(repository, versionId, authInfo, options, listener, daemon);
     }
 
-    private CommandBuilder generateCommandLine(File nativeFolder, boolean enableLoggingInfo) throws IOException {
+    private CommandBuilder generateCommandLine(File nativeFolder) throws IOException {
         CommandBuilder res = new CommandBuilder();
 
         // Executable
@@ -70,16 +70,6 @@ public class DefaultLauncher extends Launcher {
                 res.add("-Xdock:icon=" + repository.getAssetObject(version.getId(), version.getAssetIndex().getId(), "icons/minecraft.icns").getAbsolutePath());
             }
 
-            Map<DownloadType, LoggingInfo> logging = version.getLogging();
-            if (logging != null && enableLoggingInfo) {
-                LoggingInfo loggingInfo = logging.get(DownloadType.CLIENT);
-                if (loggingInfo != null) {
-                    File loggingFile = repository.getLoggingObject(version.getId(), version.getAssetIndex().getId(), loggingInfo);
-                    if (loggingFile.exists())
-                        res.add(loggingInfo.getArgument().replace("${path}", loggingFile.getAbsolutePath()));
-                }
-            }
-
             if (OperatingSystem.CURRENT_OS != OperatingSystem.WINDOWS)
                 res.add("-Duser.home=" + options.getGameDir().getParent());
 
@@ -153,14 +143,6 @@ public class DefaultLauncher extends Launcher {
 
         res.addAll(Arguments.parseStringArguments(version.getMinecraftArguments().map(StringUtils::tokenize).orElseGet(LinkedList::new), configuration));
 
-        // Optional Minecraft arguments
-        if (options.getHeight() != null && options.getHeight() != 0 && options.getWidth() != null && options.getWidth() != 0) {
-            res.add("--height");
-            res.add(options.getHeight().toString());
-            res.add("--width");
-            res.add(options.getWidth().toString());
-        }
-
         if (StringUtils.isNotBlank(options.getServerIp())) {
             String[] args = options.getServerIp().split(":");
             res.add("--server");
@@ -249,7 +231,9 @@ public class DefaultLauncher extends Launcher {
                 pair("${game_directory}", repository.getRunDirectory(version.getId()).getAbsolutePath()),
                 pair("${user_type}", "mojang"),
                 pair("${assets_index_name}", version.getAssetIndex().getId()),
-                pair("${user_properties}", authInfo.getUserProperties())
+                pair("${user_properties}", authInfo.getUserProperties()),
+                pair("${resolution_width}", options.getWidth().toString()),
+                pair("${resolution_height}", options.getHeight().toString())
         );
     }
 
@@ -258,7 +242,7 @@ public class DefaultLauncher extends Launcher {
         File nativeFolder = Files.createTempDirectory("minecraft").toFile();
 
         // To guarantee that when failed to generate launch command line, we will not call pre-launch command
-        List<String> rawCommandLine = generateCommandLine(nativeFolder, isEnablingLoggingInfo()).asList();
+        List<String> rawCommandLine = generateCommandLine(nativeFolder).asList();
 
         decompressNatives(nativeFolder);
 
@@ -310,50 +294,17 @@ public class DefaultLauncher extends Launcher {
                 writer.write(options.getPreLaunchCommand());
                 writer.newLine();
             }
-            writer.write(generateCommandLine(nativeFolder, false).toString());
+            writer.write(generateCommandLine(nativeFolder).toString());
         }
         if (!scriptFile.setExecutable(true))
             throw new PermissionException();
     }
 
-    protected boolean isEnablingLoggingInfo() {
-        return version.getLogging() != null && version.getLogging().containsKey(DownloadType.CLIENT)
-                && !"net.minecraft.launchwrapper.Launch".equals(version.getMainClass());
-    }
-
     private void startMonitors(ManagedProcess managedProcess, ProcessListener processListener) {
         startMonitors(managedProcess, processListener, true);
     }
 
     private void startMonitors(ManagedProcess managedProcess, ProcessListener processListener, boolean isDaemon) {
-        if (isEnablingLoggingInfo())
-            startMonitorsWithLoggingInfo(managedProcess, processListener, isDaemon);
-        else
-            startMonitorsWithoutLoggingInfo(managedProcess, processListener, isDaemon);
-    }
-
-    private void startMonitorsWithLoggingInfo(ManagedProcess managedProcess, ProcessListener processListener, boolean isDaemon) {
-        processListener.setProcess(managedProcess);
-        Log4jHandler logHandler = new Log4jHandler((line, level) -> {
-            processListener.onLog(line, level);
-            managedProcess.addLine(line);
-        });
-        logHandler.start();
-        managedProcess.addRelatedThread(logHandler);
-        Thread stdout = Lang.thread(new StreamPump(managedProcess.getProcess().getInputStream(), logHandler::newLine), "stdout-pump", isDaemon);
-        managedProcess.addRelatedThread(stdout);
-        Thread stderr = Lang.thread(new StreamPump(managedProcess.getProcess().getErrorStream(), it -> {
-            processListener.onLog(it + OperatingSystem.LINE_SEPARATOR, Log4jLevel.ERROR);
-            managedProcess.addLine(it);
-        }), "stderr-pump", isDaemon);
-        managedProcess.addRelatedThread(stderr);
-        managedProcess.addRelatedThread(Lang.thread(new ExitWaiter(managedProcess, Arrays.asList(stdout, stderr), (exitCode, exitType) -> {
-            logHandler.onStopped();
-            processListener.onExit(exitCode, exitType);
-        }), "exit-waiter", isDaemon));
-    }
-
-    private void startMonitorsWithoutLoggingInfo(ManagedProcess managedProcess, ProcessListener processListener, boolean isDaemon) {
         processListener.setProcess(managedProcess);
         Thread stdout = Lang.thread(new StreamPump(managedProcess.getProcess().getInputStream(), it -> {
             processListener.onLog(it + OperatingSystem.LINE_SEPARATOR, Optional.ofNullable(Log4jLevel.guessLevel(it)).orElse(Log4jLevel.INFO));

HMCLCore/src/main/java/org/jackhuang/hmcl/launch/Log4jHandler.java

@@ -1,180 +0,0 @@
-/*
- * Hello Minecraft! Launcher.
- * Copyright (C) 2018  huangyuhui <[email protected]>
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see {http://www.gnu.org/licenses/}.
- */
-package org.jackhuang.hmcl.launch;
-
-import org.jackhuang.hmcl.task.Schedulers;
-import org.jackhuang.hmcl.util.*;
-import org.xml.sax.Attributes;
-import org.xml.sax.InputSource;
-import org.xml.sax.SAXException;
-import org.xml.sax.XMLReader;
-import org.xml.sax.helpers.DefaultHandler;
-import org.xml.sax.helpers.XMLReaderFactory;
-
-import java.io.IOException;
-import java.io.InterruptedIOException;
-import java.io.PipedInputStream;
-import java.io.PipedOutputStream;
-import java.text.SimpleDateFormat;
-import java.util.Date;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Optional;
-import java.util.concurrent.Future;
-import java.util.concurrent.atomic.AtomicBoolean;
-import java.util.function.BiConsumer;
-import java.util.logging.Level;
-
-/**
- * This class is to parse log4j classic XML layout logging,
- * since only vanilla Minecraft will enable this layout.
- *
- * Also supports plain logs.
- *
- * @author huangyuhui
- */
-final class Log4jHandler extends Thread {
-
-    private final XMLReader reader;
-    private final BiConsumer<String, Log4jLevel> callback;
-    private final PipedOutputStream outputStream = new PipedOutputStream();
-    private final PipedInputStream inputStream = Lang.invoke(() -> new PipedInputStream(outputStream));
-    private final AtomicBoolean interrupted = new AtomicBoolean(false);
-    private final List<String> logs = new LinkedList<>();
-    private boolean broken = false;
-
-    public Log4jHandler(BiConsumer<String, Log4jLevel> callback) {
-        this.callback = callback;
-        newLine("<output>");
-
-        reader = Lang.invoke((ExceptionalSupplier<XMLReader, SAXException>) XMLReaderFactory::createXMLReader);
-        reader.setContentHandler(new Log4jHandlerImpl());
-    }
-
-    @Override
-    public void run() {
-        setName("log4j-handler");
-
-        try {
-            InputSource inputSource = new InputSource(inputStream);
-            reader.parse(inputSource);
-        } catch (InterruptedIOException e) {
-            // Game has been interrupted.
-            interrupted.set(true);
-        } catch (SAXException | IOException e) {
-            Logging.LOG.log(Level.WARNING, "An error occurred when reading console lines", e);
-        }
-    }
-
-    public void onStopped() {
-        if (interrupted.get())
-            return;
-
-        Lang.invoke(() -> Schedulers.newThread().schedule(() -> {
-            if (!interrupted.get()) {
-                newLine("</output>").get();
-                outputStream.close();
-                join();
-            }
-        }).get());
-    }
-
-    public Future<?> newLine(String log) {
-        return Schedulers.computation().schedule(() -> {
-            try {
-                // Prevent from namespace parsing
-                String line = log.replace("log4j:", "log4j_");
-                logs.add(line);
-                if (broken)
-                    System.out.println(line);
-
-                byte[] bytes = (line + OperatingSystem.LINE_SEPARATOR).getBytes(Constants.SYSTEM_CHARSET);
-                outputStream.write(bytes);
-                outputStream.flush();
-            } catch (IOException e) {
-                // Ignoring IOException, including read end dead.
-                if (!broken) {
-                    Logging.LOG.log(Level.WARNING, "An error occurred when writing console lines", e);
-                    logs.forEach(System.out::println);
-                    broken = true;
-                } else {
-                    // Output plain XML to user
-                    callback.accept(log, Log4jLevel.INFO);
-                }
-            }
-        });
-    }
-
-    private class Log4jHandlerImpl extends DefaultHandler {
-
-        private final SimpleDateFormat format = new SimpleDateFormat("HH:mm:ss");
-
-        private String date = "", thread = "", logger = "";
-        private StringBuilder message;
-        private Log4jLevel level;
-        private boolean readingMessage = false;
-
-        @Override
-        public void startElement(String uri, String localName, String qName, Attributes attributes) {
-            switch (localName) {
-                case "log4j_Event":
-                    message = new StringBuilder();
-                    Date d = new Date(Long.parseLong(attributes.getValue("timestamp")));
-                    date = format.format(d);
-                    try {
-                        level = Log4jLevel.valueOf(attributes.getValue("level"));
-                    } catch (IllegalArgumentException e) {
-                        level = Log4jLevel.INFO;
-                    }
-                    thread = attributes.getValue("thread");
-                    logger = attributes.getValue("logger");
-                    if ("STDERR".equals(logger))
-                        level = Log4jLevel.ERROR;
-                    break;
-                case "log4j_Message":
-                    readingMessage = true;
-                    break;
-                case "log4j_Throwable":
-                    break;
-            }
-        }
-
-        @Override
-        public void endElement(String uri, String localName, String qName) {
-            switch (localName) {
-                case "log4j_Event":
-                    callback.accept("[" + date + "] [" + thread + "/" + level.name() + "] [" + logger + "] " + message.toString(), level);
-                    break;
-                case "log4j_Message":
-                    readingMessage = false;
-                    break;
-            }
-        }
-
-        @Override
-        public void characters(char[] ch, int start, int length) {
-            String line = new String(ch, start, length);
-            if (line.trim().isEmpty())
-                return;
-            if (readingMessage)
-                message.append(line).append(OperatingSystem.LINE_SEPARATOR);
-            else
-                callback.accept(line, Optional.ofNullable(Log4jLevel.guessLevel(line)).orElse(Log4jLevel.INFO));
-        }
-    }
-}

HMCLCore/src/main/java/org/jackhuang/hmcl/mod/ModInfo.java

@@ -46,7 +46,7 @@ public final class ModInfo implements Comparable<ModInfo> {
     }
 
     public ModInfo(File file, String name, String description) {
-        this(file, name, description, "unknown", "unknown", "unknown", "");
+        this(file, name, description, "", "", "", "");
     }
 
     public ModInfo(File file, String name, String description, String authors, String version, String gameVersion, String url) {

HMCLCore/src/main/java/org/jackhuang/hmcl/task/Task.java

@@ -108,7 +108,7 @@ public abstract class Task {
         return true;
     }
 
-    private String name = getClass().toString();
+    private String name = getClass().getName();
 
     public String getName() {
         return name;

HMCLCore/src/main/java/org/jackhuang/hmcl/util/FileUtils.java

@@ -20,8 +20,10 @@ package org.jackhuang.hmcl.util;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
+import java.lang.reflect.Method;
 import java.nio.charset.Charset;
-import java.nio.file.*;
+import java.nio.file.Files;
+import java.nio.file.StandardCopyOption;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
@@ -95,6 +97,30 @@ public final class FileUtils {
         return Lang.test(() -> deleteDirectory(directory));
     }
 
+    public static boolean moveToTrash(File file) {
+        try {
+            java.awt.Desktop desktop = java.awt.Desktop.getDesktop();
+            Method moveToTrash = desktop.getClass().getMethod("moveToTrash", File.class);
+            moveToTrash.invoke(desktop, file);
+            return true;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
+    /**
+     * Check if {@code java.awt.Desktop.moveToTrash} exists.
+     * @return true if the method exists.
+     */
+    public static boolean isMovingToTrashSupported() {
+        try {
+            java.awt.Desktop.class.getMethod("moveToTrash", File.class);
+            return true;
+        } catch (ReflectiveOperationException e) {
+            return false;
+        }
+    }
+
     public static void cleanDirectory(File directory)
             throws IOException {
         if (!directory.exists()) {

HMCLCore/src/main/java/org/jackhuang/hmcl/util/IOUtils.java

@@ -31,6 +31,12 @@ public final class IOUtils {
 
     public static final int DEFAULT_BUFFER_SIZE = 8 * 1024;
 
+    public static byte[] readFullyWithoutClosing(InputStream stream) throws IOException {
+        ByteArrayOutputStream result = new ByteArrayOutputStream();
+        copyTo(stream, result);
+        return result.toByteArray();
+    }
+
     public static ByteArrayOutputStream readFully(InputStream stream) throws IOException {
         try (InputStream is = stream) {
             ByteArrayOutputStream result = new ByteArrayOutputStream();

HMCLCore/src/main/java/org/jackhuang/hmcl/util/ImmediateBooleanProperty.java

@@ -21,13 +21,11 @@ import javafx.beans.property.SimpleBooleanProperty;
 import javafx.beans.value.ChangeListener;
 import javafx.beans.value.ObservableValue;
 
-import java.util.Objects;
-import java.util.function.Consumer;
-
 /**
- *
  * @author huangyuhui
+ * @deprecated Use SimpleBooleanProperty instead
  */
+@Deprecated
 public class ImmediateBooleanProperty extends SimpleBooleanProperty {
 
     @Override
@@ -48,31 +46,9 @@ public class ImmediateBooleanProperty extends SimpleBooleanProperty {
         super.unbind();
     }
 
-    private Consumer<Boolean> consumer = null;
-    private ChangeListener<Boolean> listener = null;
-
-    public void setChangedListener(Consumer<Boolean> consumer) {
-        this.consumer = Objects.requireNonNull(consumer);
-        this.listener = null;
-    }
-
-    public void setChangedListener(ChangeListener<Boolean> listener) {
-        this.consumer = null;
-        this.listener = Objects.requireNonNull(listener);
-    }
-
-    public void setChangedListenerAndOperate(Consumer<Boolean> listener) {
-        setChangedListener(listener);
-        listener.accept(get());
-    }
-
     public ImmediateBooleanProperty(Object bean, String name, boolean initialValue) {
         super(bean, name, initialValue);
         ChangeListener<Boolean> changeListener = (a, b, newValue) -> {
-            if (consumer != null)
-                consumer.accept(newValue);
-            if (listener != null)
-                listener.changed(a, b, newValue);
         };
         addListener(changeListener);
     }

HMCLCore/src/main/java/org/jackhuang/hmcl/util/ImmediateDoubleProperty.java

@@ -1,81 +0,0 @@
-/*
- * Hello Minecraft! Launcher.
- * Copyright (C) 2018  huangyuhui <[email protected]>
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see {http://www.gnu.org/licenses/}.
- */
-package org.jackhuang.hmcl.util;
-
-
-import javafx.beans.property.SimpleDoubleProperty;
-import javafx.beans.value.ChangeListener;
-import javafx.beans.value.ObservableValue;
-
-import java.util.Objects;
-import java.util.function.Consumer;
-
-/**
- *
- * @author huangyuhui
- */
-public class ImmediateDoubleProperty extends SimpleDoubleProperty {
-
-    @Override
-    public void set(double newValue) {
-        super.get();
-        super.set(newValue);
-    }
-
-    @Override
-    public void bind(ObservableValue<? extends Number> newObservable) {
-        super.get();
-        super.bind(newObservable);
-    }
-
-    @Override
-    public void unbind() {
-        super.get();
-        super.unbind();
-    }
-
-    private Consumer<Double> consumer = null;
-    private ChangeListener<Number> listener = null;
-
-    public void setChangedListener(Consumer<Double> consumer) {
-        this.consumer = Objects.requireNonNull(consumer);
-        this.listener = null;
-    }
-
-    public void setChangedListener(ChangeListener<Number> listener) {
-        this.consumer = null;
-        this.listener = Objects.requireNonNull(listener);
-    }
-
-    public void setChangedListenerAndOperate(Consumer<Double> listener) {
-        setChangedListener(listener);
-        listener.accept(get());
-    }
-
-    public ImmediateDoubleProperty(Object bean, String name, double initialValue) {
-        super(bean, name, initialValue);
-        ChangeListener<Number> changeListener = (a, b, newValue) -> {
-            if (consumer != null)
-                consumer.accept(newValue.doubleValue());
-            if (listener != null)
-                listener.changed(a, b, newValue);
-        };
-        addListener(changeListener);
-    }
-}
-

HMCLCore/src/main/java/org/jackhuang/hmcl/util/ImmediateIntegerProperty.java

@@ -21,13 +21,11 @@ import javafx.beans.property.SimpleIntegerProperty;
 import javafx.beans.value.ChangeListener;
 import javafx.beans.value.ObservableValue;
 
-import java.util.Objects;
-import java.util.function.Consumer;
-
 /**
- *
  * @author huangyuhui
+ * @deprecated Use SimpleIntegerProperty instead
  */
+@Deprecated
 public class ImmediateIntegerProperty extends SimpleIntegerProperty {
 
     @Override
@@ -48,31 +46,9 @@ public class ImmediateIntegerProperty extends SimpleIntegerProperty {
         super.unbind();
     }
 
-    private Consumer<Integer> consumer = null;
-    private ChangeListener<Number> listener = null;
-
-    public void setChangedListener(Consumer<Integer> consumer) {
-        this.consumer = Objects.requireNonNull(consumer);
-        this.listener = null;
-    }
-
-    public void setChangedListener(ChangeListener<Number> listener) {
-        this.consumer = null;
-        this.listener = Objects.requireNonNull(listener);
-    }
-
-    public void setChangedListenerAndOperate(Consumer<Integer> listener) {
-        setChangedListener(listener);
-        listener.accept(get());
-    }
-
     public ImmediateIntegerProperty(Object bean, String name, int initialValue) {
         super(bean, name, initialValue);
         ChangeListener<Number> changeListener = (a, b, newValue) -> {
-            if (consumer != null)
-                consumer.accept(newValue.intValue());
-            if (listener != null)
-                listener.changed(a, b, newValue);
         };
         addListener(changeListener);
     }

HMCLCore/src/main/java/org/jackhuang/hmcl/util/ImmediateObjectProperty.java

@@ -21,13 +21,11 @@ import javafx.beans.property.SimpleObjectProperty;
 import javafx.beans.value.ChangeListener;
 import javafx.beans.value.ObservableValue;
 
-import java.util.Objects;
-import java.util.function.Consumer;
-
 /**
- *
  * @author huangyuhui
+ * @deprecated Use SimpleObjectProperty instead
  */
+@Deprecated
 public class ImmediateObjectProperty<T> extends SimpleObjectProperty<T> {
 
     @Override
@@ -48,31 +46,9 @@ public class ImmediateObjectProperty<T> extends SimpleObjectProperty<T> {
         super.unbind();
     }
 
-    private Consumer<T> consumer = null;
-    private ChangeListener<T> listener = null;
-
-    public void setChangedListener(Consumer<T> consumer) {
-        this.consumer = Objects.requireNonNull(consumer);
-        this.listener = null;
-    }
-
-    public void setChangedListener(ChangeListener<T> listener) {
-        this.consumer = null;
-        this.listener = Objects.requireNonNull(listener);
-    }
-
-    public void setChangedListenerAndOperate(Consumer<T> listener) {
-        setChangedListener(listener);
-        listener.accept(get());
-    }
-
     public ImmediateObjectProperty(Object bean, String name, T initialValue) {
         super(bean, name, initialValue);
         ChangeListener<T> changeListener = (a, b, newValue) -> {
-            if (consumer != null)
-                consumer.accept(newValue);
-            if (listener != null)
-                listener.changed(a, b, newValue);
         };
         addListener(changeListener);
     }

HMCLCore/src/main/java/org/jackhuang/hmcl/util/ImmediateStringProperty.java

@@ -25,9 +25,10 @@ import java.util.Objects;
 import java.util.function.Consumer;
 
 /**
- *
  * @author huangyuhui
+ * @deprecated Use SimpleStringProperty instead
  */
+@Deprecated
 public class ImmediateStringProperty extends SimpleStringProperty {
 
     @Override

HMCLCore/src/main/java/org/jackhuang/hmcl/util/JavaVersion.java

@@ -63,6 +63,10 @@ public final class JavaVersion {
         return platform;
     }
 
+    public VersionNumber getVersionNumber() {
+        return VersionNumber.asVersion(longVersion.replace('_',  '.'));
+    }
+
     /**
      * The major version of Java installation.
      *

HMCLCore/src/main/java/org/jackhuang/hmcl/util/NetworkUtils.java

@@ -17,10 +17,7 @@
  */
 package org.jackhuang.hmcl.util;
 
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.io.UncheckedIOException;
+import java.io.*;
 import java.net.*;
 import java.nio.charset.StandardCharsets;
 import java.util.Map;
@@ -156,4 +153,12 @@ public final class NetworkUtils {
             return false;
         }
     }
+
+    public static boolean URLExists(URL url) throws IOException {
+        try (InputStream stream = url.openStream()) {
+            return true;
+        } catch (FileNotFoundException e) {
+            return false;
+        }
+    }
 }