Create Favorites Widget; More hotkeys; More Tooltips; (#617)

Co-authored-by: slprime <[email protected]>
Co-authored-by: Maya <[email protected]>

src/main/java/codechicken/nei/api/IBookmarkContainerHandler.java

@@ -1,11 +1,26 @@
 package codechicken.nei.api;
 
 import java.util.ArrayList;
+import java.util.List;
 
 import net.minecraft.client.gui.inventory.GuiContainer;
+import net.minecraft.inventory.Slot;
 import net.minecraft.item.ItemStack;
 
 public interface IBookmarkContainerHandler {
 
+    default List<ItemStack> getStorageStacks(GuiContainer guiContainer) {
+        final List<Slot> slots = guiContainer.inventorySlots.inventorySlots;
+        final List<ItemStack> stacks = new ArrayList<>();
+
+        for (int i = 0; i < slots.size() - 4 * 9; i++) {
+            if (slots.get(i).getHasStack()) {
+                stacks.add(slots.get(i).getStack());
+            }
+        }
+
+        return stacks;
+    }
+
     void pullBookmarkItemsFromContainer(GuiContainer guiContainer, ArrayList<ItemStack> realItems);
 }