Merge branch 'unstable/2.0' into scroll-panel

# Conflicts:
#	src/main/java/io/github/cottonmc/cotton/gui/CottonInventoryController.java
#	src/main/java/io/github/cottonmc/cotton/gui/GuiDescription.java
#	src/main/java/io/github/cottonmc/cotton/gui/style/StyleEntry.java
#	src/main/java/io/github/cottonmc/cotton/gui/widget/WItemSlot.java
#	src/main/java/io/github/cottonmc/cotton/gui/widget/WPanel.java
#	src/main/java/io/github/cottonmc/cotton/gui/widget/WPlayerInvPanel.java
#	src/main/java/io/github/cottonmc/cotton/gui/widget/WWidget.java

19 files changed, 321 insertions, 137 deletions

diff --git a/src/main/java/io/github/cottonmc/cotton/gui/CottonInventoryController.java b/src/main/java/io/github/cottonmc/cotton/gui/CottonInventoryController.java
index 3a93706..272d251 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/CottonInventoryController.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/CottonInventoryController.java
@@ -1,5 +1,12 @@
 package io.github.cottonmc.cotton.gui;
 
+import java.util.ArrayList;
+
+import javax.annotation.Nullable;
+
+import io.github.cottonmc.cotton.gui.client.BackgroundPainter;
+import io.github.cottonmc.cotton.gui.client.LibGuiClient;
+import io.github.cottonmc.cotton.gui.widget.*;
 import net.fabricmc.api.EnvType;
 import net.fabricmc.api.Environment;
 import net.minecraft.block.Block;
@@ -10,25 +17,14 @@ import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.inventory.Inventory;
 import net.minecraft.item.ItemStack;
-import net.minecraft.screen.ArrayPropertyDelegate;
-import net.minecraft.screen.PropertyDelegate;
-import net.minecraft.screen.ScreenHandler;
-import net.minecraft.screen.ScreenHandlerContext;
+import net.minecraft.screen.*;
 import net.minecraft.screen.slot.Slot;
 import net.minecraft.screen.slot.SlotActionType;
 import net.minecraft.world.World;
 
-import io.github.cottonmc.cotton.gui.client.BackgroundPainter;
-import io.github.cottonmc.cotton.gui.client.LibGuiClient;
-import io.github.cottonmc.cotton.gui.widget.WGridPanel;
-import io.github.cottonmc.cotton.gui.widget.WLabel;
-import io.github.cottonmc.cotton.gui.widget.WPanel;
-import io.github.cottonmc.cotton.gui.widget.WPlayerInvPanel;
-import io.github.cottonmc.cotton.gui.widget.WWidget;
-
-import javax.annotation.Nullable;
-import java.util.ArrayList;
-
+/**
+ * A screen handler-based GUI description for GUIs with slots.
+ */
 public class CottonInventoryController extends ScreenHandler implements GuiDescription {
 	
 	protected Inventory blockInventory;
@@ -329,11 +325,31 @@ public class CottonInventoryController extends ScreenHandler implements GuiDescr
 		this.propertyDelegate = delegate;
 		return this;
 	}
-	
+
+	/**
+	 * Creates a player inventory widget from this panel's {@linkplain #playerInventory player inventory}.
+	 *
+	 * @return the created inventory widget
+	 */
 	public WPlayerInvPanel createPlayerInventoryPanel() {
 		return new WPlayerInvPanel(this.playerInventory);
 	}
-	
+
+	/**
+	 * Gets the block inventory at the context.
+	 *
+	 * <p>If no inventory is found, returns {@link EmptyInventory#INSTANCE}.
+	 *
+	 * <p>Searches for these implementations in the following order:
+	 * <ol>
+	 *     <li>Blocks implementing {@code InventoryProvider}</li>
+	 *     <li>Block entities implementing {@code InventoryProvider}</li>
+	 *     <li>Block entities implementing {@code Inventory}</li>
+	 * </ol>
+	 *
+	 * @param ctx the context
+	 * @return the found inventory
+	 */
 	public static Inventory getBlockInventory(ScreenHandlerContext ctx) {
 		return ctx.run((world, pos) -> {
 			BlockState state = world.getBlockState(pos);
@@ -361,7 +377,17 @@ public class CottonInventoryController extends ScreenHandler implements GuiDescr
 			return EmptyInventory.INSTANCE;
 		}).orElse(EmptyInventory.INSTANCE);
 	}
-	
+
+	/**
+	 * Gets the property delegate at the context.
+	 *
+	 * <p>If no property delegate is found, returns an empty property delegate with no properties.
+	 *
+	 * <p>Searches for blocks and block entities implementing {@link PropertyDelegateHolder}.
+	 *
+	 * @param ctx the context
+	 * @return the found property delegate
+	 */
 	public static PropertyDelegate getBlockPropertyDelegate(ScreenHandlerContext ctx) {
 		return ctx.run((world, pos) -> {
 			BlockState state = world.getBlockState(pos);
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/EmptyInventory.java b/src/main/java/io/github/cottonmc/cotton/gui/EmptyInventory.java
index 84eee0f..7376c92 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/EmptyInventory.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/EmptyInventory.java
@@ -4,6 +4,9 @@ import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.inventory.Inventory;
 import net.minecraft.item.ItemStack;
 
+/**
+ * An empty inventory that cannot hold any items.
+ */
 public class EmptyInventory implements Inventory {
 	public static final EmptyInventory INSTANCE = new EmptyInventory();
 	
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/GuiDescription.java b/src/main/java/io/github/cottonmc/cotton/gui/GuiDescription.java
index febaaa7..fec799b 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/GuiDescription.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/GuiDescription.java
@@ -1,14 +1,22 @@
 package io.github.cottonmc.cotton.gui;
 
-import net.fabricmc.api.EnvType;
-import net.fabricmc.api.Environment;
-import net.minecraft.screen.PropertyDelegate;
+import javax.annotation.Nullable;
 
 import io.github.cottonmc.cotton.gui.widget.WPanel;
 import io.github.cottonmc.cotton.gui.widget.WWidget;
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
+import net.minecraft.screen.PropertyDelegate;
 
-import javax.annotation.Nullable;
-
+/**
+ * A GUI description represents a GUI without depending on screens.
+ *
+ * <p>GUI descriptions contain the root panel and the property delegate of the GUI.
+ * They also manage the focused widget.
+ *
+ * @see io.github.cottonmc.cotton.gui.client.LightweightGuiDescription
+ * @see CottonInventoryController
+ */
 public interface GuiDescription {
 	public WPanel getRootPanel();
 	public int getTitleColor();
@@ -37,7 +45,7 @@ public interface GuiDescription {
 	@Nullable
 	public WWidget getFocus();
 	
-	/** Notifies this gui that the widget waants to acquire focus. */
+	/** Notifies this gui that the widget wants to acquire focus. */
 	public void requestFocus(WWidget widget);
 	
 	/** Notifies this gui that the widget wants to give up its hold over focus. */
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/ValidatedSlot.java b/src/main/java/io/github/cottonmc/cotton/gui/ValidatedSlot.java
index cce4cfe..1e9ee3c 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/ValidatedSlot.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/ValidatedSlot.java
@@ -4,58 +4,88 @@ import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.inventory.Inventory;
 import net.minecraft.item.ItemStack;
 import net.minecraft.screen.slot.Slot;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 public class ValidatedSlot extends Slot {
+	private static final Logger LOGGER = LogManager.getLogger();
 	private final int slotNumber;
-	private boolean modifiable = true;
-	
-	public ValidatedSlot(Inventory inventoryIn, int index, int xPosition, int yPosition) {
-		super(inventoryIn, index, xPosition, yPosition);
-		if (inventoryIn==null) throw new IllegalArgumentException("Can't make an itemslot from a null inventory!");
+	private boolean insertingAllowed = true;
+	private boolean takingAllowed = true;
+
+	public ValidatedSlot(Inventory inventory, int index, int x, int y) {
+		super(inventory, index, x, y);
+		if (inventory==null) throw new IllegalArgumentException("Can't make an itemslot from a null inventory!");
 		this.slotNumber = index;
 	}
 	
 	@Override
 	public boolean canInsert(ItemStack stack) {
-		return modifiable && inventory.isValid(slotNumber, stack);
+		return insertingAllowed && inventory.isValid(slotNumber, stack);
 	}
 	
 	@Override
 	public boolean canTakeItems(PlayerEntity player) {
-		return modifiable && inventory.canPlayerUse(player);
+		return takingAllowed && inventory.canPlayerUse(player);
 	}
 	
 	@Override
 	public ItemStack getStack() {
 		if (inventory==null) {
-			System.out.println("Prevented null-inventory from WItemSlot with slot #: "+slotNumber);
+			LOGGER.warn("Prevented null-inventory from WItemSlot with slot #: {}", slotNumber);
 			return ItemStack.EMPTY;
 		}
 		
 		ItemStack result = super.getStack();
 		if (result==null) {
-			System.out.println("Prevented null-itemstack crash from: "+inventory.getClass().getCanonicalName());
+			LOGGER.warn("Prevented null-itemstack crash from: {}", inventory.getClass().getCanonicalName());
 			return ItemStack.EMPTY;
 		}
 		
 		return result;
 	}
 
+	public int getInventoryIndex() {
+		return slotNumber;
+	}
+
 	/**
-	 * Returns true if the item in this slot can be modified by players.
+	 * Returns whether items can be inserted into this slot.
 	 *
-	 * @return true if this slot is modifiable
-	 * @since 1.8.0
+	 * @return true if items can be inserted, false otherwise
+	 * @since 1.10.0
 	 */
-	public boolean isModifiable() {
-		return modifiable;
+	public boolean isInsertingAllowed() {
+		return insertingAllowed;
 	}
 
-	public void setModifiable(boolean modifiable) {
-		this.modifiable = modifiable;
+	/**
+	 * Sets whether inserting items into this slot is allowed.
+	 *
+	 * @param insertingAllowed true if items can be inserted, false otherwise
+	 * @since 1.10.0
+	 */
+	public void setInsertingAllowed(boolean insertingAllowed) {
+		this.insertingAllowed = insertingAllowed;
 	}
 
-	public int getInventoryIndex() {
-		return slotNumber;
+	/**
+	 * Returns whether items can be taken from this slot.
+	 *
+	 * @return true if items can be taken, false otherwise
+	 * @since 1.10.0
+	 */
+	public boolean isTakingAllowed() {
+		return takingAllowed;
+	}
+
+	/**
+	 * Sets whether taking items from this slot is allowed.
+	 *
+	 * @param takingAllowed true if items can be taken, false otherwise
+	 * @since 1.10.0
+	 */
+	public void setTakingAllowed(boolean takingAllowed) {
+		this.takingAllowed = takingAllowed;
 	}
 }
\ No newline at end of file
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/client/BackgroundPainter.java b/src/main/java/io/github/cottonmc/cotton/gui/client/BackgroundPainter.java
index b2b4943..0ca52a4 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/client/BackgroundPainter.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/client/BackgroundPainter.java
@@ -9,6 +9,7 @@ import io.github.cottonmc.cotton.gui.widget.WWidget;
  * Background painters are used to paint the background of a widget.
  * The background painter instance of a widget can be changed to customize the look of a widget.
  */
+@FunctionalInterface
 public interface BackgroundPainter {
 	/**
 	 * Paint the specified panel to the screen.
@@ -18,30 +19,20 @@ public interface BackgroundPainter {
 	 */
 	public void paintBackground(int left, int top, WWidget panel);
 
-
 	/**
-	 * The {@code VANILLA} background painter draws a vanilla-like gui panel using {@link ScreenDrawing#drawGuiPanel(int, int, int, int)}.
-	 *
-	 * <p>This background painter applies a padding of 8 pixels to all sides around the widget.
-	 *
-	 * <p>This background painter is the default painter for root panels.
-	 * 	 * You can override {@link io.github.cottonmc.cotton.gui.GuiDescription#addPainters()} to customize the painter yourself.
-	 */
-	public static BackgroundPainter VANILLA = (left, top, panel) -> {
-		ScreenDrawing.drawGuiPanel(left-8, top-8, panel.getWidth()+16, panel.getHeight()+16);
-	};
-
-	/**
-	 * The {@code VANILLA_9PATCH} background painter draws a vanilla-like gui panel using {@linkplain NinePatch nine-patch textures}.
+	 * The {@code VANILLA} background painter draws a vanilla-like gui panel using {@linkplain NinePatch nine-patch textures}.
 	 *
 	 * <p>This background painter uses {@code libgui:textures/widget/panel_light.png} as the light texture and
 	 * {@code libgui:textures/widget/panel_dark.png} as the dark texture.
 	 *
 	 * <p>This background painter applies a padding of 8 pixels to all sides around the widget.
 	 *
+	 * <p>This background painter is the default painter for root panels.
+	 * 	 * You can override {@link io.github.cottonmc.cotton.gui.GuiDescription#addPainters()} to customize the painter yourself.
+	 *
 	 * @since 1.5.0
 	 */
-	public static BackgroundPainter VANILLA_9PATCH = createLightDarkVariants(
+	public static BackgroundPainter VANILLA = createLightDarkVariants(
 			createNinePatch(new Identifier("libgui", "textures/widget/panel_light.png"), 8),
 			createNinePatch(new Identifier("libgui", "textures/widget/panel_dark.png"), 8)
 	);
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/client/CottonClientScreen.java b/src/main/java/io/github/cottonmc/cotton/gui/client/CottonClientScreen.java
index 13824ad..b5ac34e 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/client/CottonClientScreen.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/client/CottonClientScreen.java
@@ -67,7 +67,7 @@ public class CottonClientScreen extends Screen implements TextHoverRendererScree
 		}
 		
 		if (getTitle() != null) {
-			textRenderer.method_27528(matrices, getTitle(), left, top, description.getTitleColor());
+			textRenderer.draw(matrices, getTitle(), left, top, description.getTitleColor());
 		}
 	}
 	
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/client/CottonInventoryScreen.java b/src/main/java/io/github/cottonmc/cotton/gui/client/CottonInventoryScreen.java
index 9cfe88d..ea24abf 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/client/CottonInventoryScreen.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/client/CottonInventoryScreen.java
@@ -198,7 +198,7 @@ public class CottonInventoryScreen<T extends CottonInventoryController> extends
 		}
 		
 		if (getTitle() != null) {
-			textRenderer.method_27528(matrices, getTitle(), x, y, description.getTitleColor());
+			textRenderer.draw(matrices, getTitle(), x, y, description.getTitleColor());
 		}
 	}
 	
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/client/ScreenDrawing.java b/src/main/java/io/github/cottonmc/cotton/gui/client/ScreenDrawing.java
index 4d892ce..4868f92 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/client/ScreenDrawing.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/client/ScreenDrawing.java
@@ -298,13 +298,13 @@ public class ScreenDrawing {
 			}
 			break;
 		case CENTER: {
-				int wid = MinecraftClient.getInstance().textRenderer.getStringWidth(s);
+				int wid = MinecraftClient.getInstance().textRenderer.getWidth(s);
 				int l = (width/2) - (wid/2);
 				MinecraftClient.getInstance().textRenderer.draw(matrices, s, x+l, y, color);
 			}
 			break;
 		case RIGHT: {
-				int wid = MinecraftClient.getInstance().textRenderer.getStringWidth(s);
+				int wid = MinecraftClient.getInstance().textRenderer.getWidth(s);
 				int l = width - wid;
 				MinecraftClient.getInstance().textRenderer.draw(matrices, s, x+l, y, color);
 			}
@@ -327,19 +327,19 @@ public class ScreenDrawing {
 	public static void drawString(MatrixStack matrices, Text text, Alignment align, int x, int y, int width, int color) {
 		switch(align) {
 		case LEFT: {
-				MinecraftClient.getInstance().textRenderer.method_27528(matrices, text, x, y, color);
+				MinecraftClient.getInstance().textRenderer.draw(matrices, text, x, y, color);
 			}
 			break;
 		case CENTER: {
-				int wid = MinecraftClient.getInstance().textRenderer.method_27525(text);
+				int wid = MinecraftClient.getInstance().textRenderer.getWidth(text);
 				int l = (width/2) - (wid/2);
-				MinecraftClient.getInstance().textRenderer.method_27528(matrices, text, x+l, y, color);
+				MinecraftClient.getInstance().textRenderer.draw(matrices, text, x+l, y, color);
 			}
 			break;
 		case RIGHT: {
-				int wid = MinecraftClient.getInstance().textRenderer.method_27525(text);
+				int wid = MinecraftClient.getInstance().textRenderer.getWidth(text);
 				int l = width - wid;
-				MinecraftClient.getInstance().textRenderer.method_27528(matrices, text, x+l, y, color);
+				MinecraftClient.getInstance().textRenderer.draw(matrices, text, x+l, y, color);
 			}
 			break;
 		}
@@ -363,13 +363,13 @@ public class ScreenDrawing {
 			}
 			break;
 		case CENTER: {
-				int wid = MinecraftClient.getInstance().textRenderer.getStringWidth(s);
+				int wid = MinecraftClient.getInstance().textRenderer.getWidth(s);
 				int l = (width/2) - (wid/2);
 				MinecraftClient.getInstance().textRenderer.drawWithShadow(matrices, s, x+l, y, color);
 			}
 			break;
 		case RIGHT: {
-				int wid = MinecraftClient.getInstance().textRenderer.getStringWidth(s);
+				int wid = MinecraftClient.getInstance().textRenderer.getWidth(s);
 				int l = width - wid;
 				MinecraftClient.getInstance().textRenderer.drawWithShadow(matrices, s, x+l, y, color);
 			}
@@ -391,19 +391,19 @@ public class ScreenDrawing {
 	public static void drawStringWithShadow(MatrixStack matrices, Text text, Alignment align, int x, int y, int width, int color) {
 		switch(align) {
 		case LEFT: {
-				MinecraftClient.getInstance().textRenderer.method_27528(matrices, text, x, y, color);
+				MinecraftClient.getInstance().textRenderer.drawWithShadow(matrices, text, x, y, color);
 			}
 			break;
 		case CENTER: {
-				int wid = MinecraftClient.getInstance().textRenderer.method_27525(text);
+				int wid = MinecraftClient.getInstance().textRenderer.getWidth(text);
 				int l = (width/2) - (wid/2);
-				MinecraftClient.getInstance().textRenderer.method_27528(matrices, text, x+l, y, color);
+				MinecraftClient.getInstance().textRenderer.drawWithShadow(matrices, text, x+l, y, color);
 			}
 			break;
 		case RIGHT: {
-				int wid = MinecraftClient.getInstance().textRenderer.method_27525(text);
+				int wid = MinecraftClient.getInstance().textRenderer.getWidth(text);
 				int l = width - wid;
-				MinecraftClient.getInstance().textRenderer.method_27528(matrices, text, x+l, y, color);
+				MinecraftClient.getInstance().textRenderer.drawWithShadow(matrices, text, x+l, y, color);
 			}
 			break;
 		}
@@ -432,7 +432,7 @@ public class ScreenDrawing {
 	 * @param color    the text color
 	 */
 	public static void drawString(MatrixStack matrices, Text text, int x, int y, int color) {
-		MinecraftClient.getInstance().textRenderer.method_27528(matrices, text, x, y, color);
+		MinecraftClient.getInstance().textRenderer.draw(matrices, text, x, y, color);
 	}
 
 	public static int colorAtOpacity(int opaque, float opacity) {
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/style/StyleEntry.java b/src/main/java/io/github/cottonmc/cotton/gui/style/StyleEntry.java
deleted file mode 100644
index 2376a07..0000000
--- a/src/main/java/io/github/cottonmc/cotton/gui/style/StyleEntry.java
+++ /dev/null
@@ -1,17 +0,0 @@
-package io.github.cottonmc.cotton.gui.style;
-
-import io.github.cottonmc.cotton.gui.widget.data.Color;
-
-import java.util.HashMap;
-
-public class StyleEntry {
-	private String selector = "*";
-	private HashMap<String, String> customEntries = new HashMap<>();
-	
-	private Color foreground;
-	private Color background;
-	
-	public Color getForeground() {
-		return (foreground!=null) ? foreground : Color.WHITE;
-	}
-}
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/widget/WAbstractSlider.java b/src/main/java/io/github/cottonmc/cotton/gui/widget/WAbstractSlider.java
index 3367b1d..17b88c1 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/widget/WAbstractSlider.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/widget/WAbstractSlider.java
@@ -348,6 +348,16 @@ public abstract class WAbstractSlider extends WWidget {
 				: (ch == GLFW.GLFW_KEY_RIGHT || ch == GLFW.GLFW_KEY_UP);
 	}
 
+	/**
+	 * The direction enum represents all four directions a slider can face.
+	 *
+	 * <p>For example, a slider whose value grows towards the right faces right.
+	 *
+	 * <p>The default direction for vertical sliders is {@link #UP} and
+	 * the one for horizontal sliders is {@link #RIGHT}.
+	 *
+	 * @since 2.0.0
+	 */
 	public enum Direction {
 		UP(Axis.VERTICAL, false),
 		DOWN(Axis.VERTICAL, true),
@@ -362,10 +372,22 @@ public abstract class WAbstractSlider extends WWidget {
 			this.inverted = inverted;
 		}
 
+		/**
+		 * Gets the direction's axis.
+		 *
+		 * @return the axis
+		 */
 		public Axis getAxis() {
 			return axis;
 		}
 
+		/**
+		 * Returns whether this slider is inverted.
+		 *
+		 * <p>An inverted slider will have reversed keyboard control.
+		 *
+		 * @return whether this slider is inverted
+		 */
 		public boolean isInverted() {
 			return inverted;
 		}
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/widget/WItem.java b/src/main/java/io/github/cottonmc/cotton/gui/widget/WItem.java
index a7f3921..ffba2c3 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/widget/WItem.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/widget/WItem.java
@@ -4,6 +4,7 @@ import com.google.common.collect.ImmutableList;
 import com.mojang.blaze3d.systems.RenderSystem;
 import net.fabricmc.api.EnvType;
 import net.fabricmc.api.Environment;
+import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.render.item.ItemRenderer;
 import net.minecraft.client.util.math.MatrixStack;
@@ -61,7 +62,7 @@ public class WItem extends WWidget {
 		MinecraftClient mc = MinecraftClient.getInstance();
 		ItemRenderer renderer = mc.getItemRenderer();
 		renderer.zOffset = 100f;
-		renderer.renderGuiItem(mc.player, items.get(current), x + getWidth() / 2 - 9, y + getHeight() / 2 - 9);
+		renderer.method_27951(mc.player, items.get(current), x + getWidth() / 2 - 9, y + getHeight() / 2 - 9);
 		renderer.zOffset = 0f;
 	}
 
@@ -109,7 +110,7 @@ public class WItem extends WWidget {
 		ImmutableList.Builder<ItemStack> builder = ImmutableList.builder();
 
 		for (ItemConvertible item : tag.values()) {
-			builder.add(item.asItem().getStackForRender());
+			builder.add(new ItemStack(item));
 		}
 
 		return builder.build();
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/widget/WItemSlot.java b/src/main/java/io/github/cottonmc/cotton/gui/widget/WItemSlot.java
index 9006457..012cf16 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/widget/WItemSlot.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/widget/WItemSlot.java
@@ -1,29 +1,29 @@
 package io.github.cottonmc.cotton.gui.widget;
 
-import com.google.common.collect.Lists;
-import net.fabricmc.api.EnvType;
-import net.fabricmc.api.Environment;
-import net.minecraft.client.util.math.MatrixStack;
-import net.minecraft.inventory.Inventory;
+import java.util.ArrayList;
+import java.util.List;
 
 import io.github.cottonmc.cotton.gui.GuiDescription;
 import io.github.cottonmc.cotton.gui.ValidatedSlot;
 import io.github.cottonmc.cotton.gui.client.BackgroundPainter;
 import io.github.cottonmc.cotton.gui.client.ScreenDrawing;
-
-import java.util.List;
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
+import net.minecraft.client.util.math.MatrixStack;
+import net.minecraft.inventory.Inventory;
 
 public class WItemSlot extends WWidget {
-	private final List<ValidatedSlot> peers = Lists.newArrayList();
+	private final List<ValidatedSlot> peers = new ArrayList<>();
 	private BackgroundPainter backgroundPainter;
 	private Inventory inventory;
 	private int startIndex = 0;
 	private int slotsWide = 1;
 	private int slotsHigh = 1;
 	private boolean big = false;
-	private boolean modifiable = true;
-	
-	public WItemSlot(Inventory inventory, int startIndex, int slotsWide, int slotsHigh, boolean big, boolean ltr) {
+	private boolean insertingAllowed = true;
+	private boolean takingAllowed = true;
+
+	public WItemSlot(Inventory inventory, int startIndex, int slotsWide, int slotsHigh, boolean big) {
 		this.inventory = inventory;
 		this.startIndex = startIndex;
 		this.slotsWide = slotsWide;
@@ -60,7 +60,14 @@ public class WItemSlot extends WWidget {
 		
 		return w;
 	}
-	
+
+	/**
+	 * Creates a 9x3 slot widget from the "main" part of a player inventory.
+	 *
+	 * @param inventory the player inventory
+	 * @return the created slot widget
+	 * @see WPlayerInvPanel
+	 */
 	public static WItemSlot ofPlayerStorage(Inventory inventory) {
 		WItemSlot w = new WItemSlot();
 		w.inventory = inventory;
@@ -89,17 +96,69 @@ public class WItemSlot extends WWidget {
 	/**
 	 * Returns true if the contents of this {@code WItemSlot} can be modified by players.
 	 *
-	 * @return true if this slot is modifiable
+	 * @return true if items can be inserted into or taken from this slot widget, false otherwise
 	 * @since 1.8.0
 	 */
 	public boolean isModifiable() {
-		return modifiable;
+		return takingAllowed || insertingAllowed;
 	}
 
 	public WItemSlot setModifiable(boolean modifiable) {
-		this.modifiable = modifiable;
+		this.insertingAllowed = modifiable;
+		this.takingAllowed = modifiable;
 		for (ValidatedSlot peer : peers) {
-			peer.setModifiable(modifiable);
+			peer.setInsertingAllowed(modifiable);
+			peer.setTakingAllowed(modifiable);
+		}
+		return this;
+	}
+
+	/**
+	 * Returns whether items can be inserted into this slot.
+	 *
+	 * @return true if items can be inserted, false otherwise
+	 * @since 1.10.0
+	 */
+	public boolean isInsertingAllowed() {
+		return insertingAllowed;
+	}
+
+	/**
+	 * Sets whether inserting items into this slot is allowed.
+	 *
+	 * @param insertingAllowed true if items can be inserted, false otherwise
+	 * @return this slot widget
+	 * @since 1.10.0
+	 */
+	public WItemSlot setInsertingAllowed(boolean insertingAllowed) {
+		this.insertingAllowed = insertingAllowed;
+		for (ValidatedSlot peer : peers) {
+			peer.setInsertingAllowed(insertingAllowed);
+		}
+		return this;
+	}
+
+	/**
+	 * Returns whether items can be taken from this slot.
+	 *
+	 * @return true if items can be taken, false otherwise
+	 * @since 1.10.0
+	 */
+	public boolean isTakingAllowed() {
+		return takingAllowed;
+	}
+
+	/**
+	 * Sets whether taking items from this slot is allowed.
+	 *
+	 * @param takingAllowed true if items can be taken, false otherwise
+	 * @return this slot widget
+	 * @since 1.10.0
+	 */
+	public WItemSlot setTakingAllowed(boolean takingAllowed) {
+		this.takingAllowed = takingAllowed;
+		for (ValidatedSlot peer : peers) {
+			peer.setTakingAllowed(takingAllowed);
 		}
 		return this;
 	}
@@ -112,14 +171,29 @@ public class WItemSlot extends WWidget {
 		
 		for (int y = 0; y < slotsHigh; y++) {
 			for (int x = 0; x < slotsWide; x++) {
-				ValidatedSlot slot = new ValidatedSlot(inventory, index, this.getAbsoluteX() + (x * 18), this.getAbsoluteY() + (y * 18));
-				slot.setModifiable(modifiable);
+				ValidatedSlot slot = createSlotPeer(inventory, index, this.getAbsoluteX() + (x * 18), this.getAbsoluteY() + (y * 18));
+				slot.setInsertingAllowed(insertingAllowed);
+				slot.setTakingAllowed(takingAllowed);
 				peers.add(slot);
 				c.addSlotPeer(slot);
 				index++;
 			}
 		}
 	}
+
+	/**
+	 * Creates a slot peer for this slot widget.
+	 *
+	 * @param inventory the slot inventory
+	 * @param index     the index in the inventory
+	 * @param x         the X coordinate
+	 * @param y         the Y coordinate
+	 * @return the created slot instance
+	 * @since 1.11.0
+	 */
+	protected ValidatedSlot createSlotPeer(Inventory inventory, int index, int x, int y) {
+		return new ValidatedSlot(inventory, index, x, y);
+	}
 	
 	@Environment(EnvType.CLIENT)
 	public void setBackgroundPainter(BackgroundPainter painter) {
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/widget/WLabel.java b/src/main/java/io/github/cottonmc/cotton/gui/widget/WLabel.java
index c0fc7f6..663c58a 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/widget/WLabel.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/widget/WLabel.java
@@ -102,9 +102,9 @@ public class WLabel extends WWidget {
 
 	@Environment(EnvType.CLIENT)
 	@Nullable
-	private Text getTextAt(int x, int y) {
+	public Text getTextAt(int x, int y) {
 		if (isWithinBounds(x, y)) {
-			return MinecraftClient.getInstance().textRenderer.method_27527().method_27489(text, x);
+			return MinecraftClient.getInstance().textRenderer.trimToWidth(text, x);
 		}
 		return null;
 	}
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/widget/WListPanel.java b/src/main/java/io/github/cottonmc/cotton/gui/widget/WListPanel.java
index 786072f..9ba8562 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/widget/WListPanel.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/widget/WListPanel.java
@@ -55,6 +55,13 @@ public class WListPanel<D, W extends WWidget> extends WClippedPanel {
 	protected WScrollBar scrollBar = new WScrollBar(Axis.VERTICAL);
 	private int lastScroll = -1;
 
+	/**
+	 * Constructs a list panel.
+	 *
+	 * @param data         the list data
+	 * @param supplier     the widget supplier that creates unconfigured widgets
+	 * @param configurator the widget configurator that configures widgets to display the passed data
+	 */
 	public WListPanel(List<D> data, Supplier<W> supplier, BiConsumer<D, W> configurator) {
 		this.data = data;
 		this.supplier = supplier;
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/widget/WPanel.java b/src/main/java/io/github/cottonmc/cotton/gui/widget/WPanel.java
index 5b99ca9..d1f0f4a 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/widget/WPanel.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/widget/WPanel.java
@@ -1,17 +1,16 @@
 package io.github.cottonmc.cotton.gui.widget;
 
-import com.google.common.collect.Lists;
-import net.fabricmc.api.EnvType;
-import net.fabricmc.api.Environment;
-import net.minecraft.client.util.math.MatrixStack;
+import java.util.ArrayList;
+import java.util.List;
 
 import io.github.cottonmc.cotton.gui.GuiDescription;
 import io.github.cottonmc.cotton.gui.client.BackgroundPainter;
-
-import java.util.List;
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
+import net.minecraft.client.util.math.MatrixStack;
 
 /**
- * Panels are widgets tthat contain other widgets.
+ * Panels are widgets that contain other widgets.
  */
 public abstract class WPanel extends WWidget {
 	/**
@@ -19,7 +18,7 @@ public abstract class WPanel extends WWidget {
 	 *
 	 * <p>The list is mutable.
 	 */
-	protected final List<WWidget> children = Lists.newArrayList();
+	protected final List<WWidget> children = new ArrayList<>();
 	@Environment(EnvType.CLIENT)
 	private BackgroundPainter backgroundPainter = null;
 	
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/widget/WPlayerInvPanel.java b/src/main/java/io/github/cottonmc/cotton/gui/widget/WPlayerInvPanel.java
index d637cd6..47df88f 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/widget/WPlayerInvPanel.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/widget/WPlayerInvPanel.java
@@ -1,12 +1,16 @@
 package io.github.cottonmc.cotton.gui.widget;
 
-import net.minecraft.entity.player.PlayerInventory;
-
 import io.github.cottonmc.cotton.gui.client.BackgroundPainter;
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
+import net.minecraft.entity.player.PlayerInventory;
 
+/**
+ * A player inventory widget that has a visually separate hotbar.
+ */
 public class WPlayerInvPanel extends WPlainPanel {
-	private WItemSlot inv;
-	private WItemSlot hotbar;
+	private final WItemSlot inv;
+	private final WItemSlot hotbar;
 
 	public WPlayerInvPanel(PlayerInventory playerInventory) {
 		inv = WItemSlot.ofPlayerStorage(playerInventory);
@@ -15,6 +19,13 @@ public class WPlayerInvPanel extends WPlainPanel {
 		this.add(hotbar, 0, 58);
 	}
 
+	/**
+	 * Sets the background painter of this inventory widget's slots.
+	 *
+	 * @param painter the new painter
+	 * @return this panel
+	 */
+	@Environment(EnvType.CLIENT)
 	@Override
 	public WPanel setBackgroundPainter(BackgroundPainter painter) {
 		super.setBackgroundPainter(null);
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/widget/WText.java b/src/main/java/io/github/cottonmc/cotton/gui/widget/WText.java
index 6172a8c..ea7f721 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/widget/WText.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/widget/WText.java
@@ -6,7 +6,6 @@ import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.font.TextRenderer;
 import net.minecraft.client.gui.screen.Screen;
 import net.minecraft.client.util.math.MatrixStack;
-import net.minecraft.text.Style;
 import net.minecraft.text.Text;
 
 import io.github.cottonmc.cotton.gui.client.LibGuiClient;
@@ -55,18 +54,18 @@ public class WText extends WWidget {
 	@Environment(EnvType.CLIENT)
 	private void wrapLines() {
 		TextRenderer font = MinecraftClient.getInstance().textRenderer;
-		wrappedLines = font.method_27527().method_27491(text, width, Style.field_24360, false);
+		wrappedLines = font.wrapLines(text, width);
 	}
 
 	@Environment(EnvType.CLIENT)
 	@Nullable
-	protected Text getTextAt(int x, int y) {
+	public Text getTextAt(int x, int y) {
 		TextRenderer font = MinecraftClient.getInstance().textRenderer;
 		int lineIndex = y / font.fontHeight;
 
 		if (lineIndex >= 0 && lineIndex < wrappedLines.size()) {
 			Text line = wrappedLines.get(lineIndex);
-			return font.method_27527().method_27489(line, x);
+			return font.trimToWidth(line, x);
 		}
 
 		return null;
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/widget/WTextField.java b/src/main/java/io/github/cottonmc/cotton/gui/widget/WTextField.java
index e5d5b13..429fa4f 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/widget/WTextField.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/widget/WTextField.java
@@ -320,7 +320,7 @@ public class WTextField extends WWidget {
 		int textColor = this.editable ? this.enabledColor : this.uneditableColor;
 		
 		//TODO: Scroll offset
-		String trimText = font.method_27523(this.text, this.width-OFFSET_X_TEXT);
+		String trimText = font.trimToWidth(this.text, this.width-OFFSET_X_TEXT);
 		
 		boolean selection = (select!=-1);
 		boolean focused = this.isFocused(); //this.isFocused() && this.focusedTicks / 6 % 2 == 0 && boolean_1; //Blinks the cursor
@@ -675,7 +675,7 @@ public class WTextField extends WWidget {
 		TextRenderer font = MinecraftClient.getInstance().textRenderer;
 		int lastAdvance = 0;
 		for(int i=0; i<s.length()-1; i++) {
-			int advance = font.getStringWidth(s.substring(0,i+1));
+			int advance = font.getWidth(s.substring(0,i+1));
 			int charAdvance = advance-lastAdvance;
 			if (x<advance + (charAdvance/2)) return i+1;
 			
@@ -696,7 +696,7 @@ public class WTextField extends WWidget {
 		if (pos==0) return 0;//-1;
 		
 		TextRenderer font = MinecraftClient.getInstance().textRenderer;
-		int ofs = font.getStringWidth(s.substring(0, pos))+1;		
+		int ofs = font.getWidth(s.substring(0, pos))+1;
 		return ofs; //(font.isRightToLeft()) ? -ofs : ofs;
 	}
 }
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/widget/WWidget.java b/src/main/java/io/github/cottonmc/cotton/gui/widget/WWidget.java
index 8b4c06c..656f24f 100644
--- a/src/main/java/io/github/cottonmc/cotton/gui/widget/WWidget.java
+++ b/src/main/java/io/github/cottonmc/cotton/gui/widget/WWidget.java
@@ -1,31 +1,40 @@
 package io.github.cottonmc.cotton.gui.widget;
 
+import java.util.ArrayList;
+import java.util.List;
+
+import io.github.cottonmc.cotton.gui.GuiDescription;
 import net.fabricmc.api.EnvType;
 import net.fabricmc.api.Environment;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.gui.screen.Screen;
 import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.text.Text;
-
-import io.github.cottonmc.cotton.gui.GuiDescription;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 import javax.annotation.Nullable;
-import java.util.ArrayList;
-import java.util.List;
 
 /**
  * The base class for all widgets.
  */
 public class WWidget {
+	private static final Logger LOGGER = LogManager.getLogger();
+
 	/**
 	 * The containing panel of this widget.
 	 * Can be null if this widget is the root panel or a HUD widget.
 	 */
 	@Nullable
 	protected WPanel parent;
+
+	/** The X coordinate of this widget relative to its parent. */
 	protected int x = 0;
+	/** The Y coordinate of this widget relative to its parent. */
 	protected int y = 0;
+	/** The width of this widget, defaults to 18 pixels. */
 	protected int width = 18;
+	/** The height of this widget, defaults to 18 pixels. */
 	protected int height = 18;
 
 	/**
@@ -244,23 +253,44 @@ public class WWidget {
 	public void onFocusLost() {
 	}
 
+	/**
+	 * Tests whether this widget has focus.
+	 *
+	 * @return true if this widget widget has focus, false otherwise
+	 * @see GuiDescription#isFocused(WWidget)
+	 */
 	public boolean isFocused() {
 		if (host==null) return false;
 		return host.isFocused(this);
 	}
 
+	/**
+	 * If this widget has a host, requests the focus from the host.
+	 *
+	 * @see GuiDescription#requestFocus(WWidget)
+	 */
 	public void requestFocus() {
 		if (host!=null) {
 			host.requestFocus(this);
 		} else {
-			System.out.println("host is null");
+			LOGGER.warn("Requesting focus for {}, but the host is null", this);
 		}
 	}
 
+	/**
+	 * If this widget has a host, releases this widget's focus.
+	 *
+	 * @see GuiDescription#releaseFocus(WWidget)
+	 */
 	public void releaseFocus() {
 		if (host!=null) host.releaseFocus(this);
 	}
 
+	/**
+	 * Tests whether this widget can have the focus in the GUI.
+	 *
+	 * @return true if this widget can be focused, false otherwise
+	 */
 	public boolean canFocus() {
 		return false;
 	}