Improve panel and list docs

2 files changed, 60 insertions, 6 deletions

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 7c92191..ff2b897 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
@@ -16,25 +16,49 @@ import io.github.cottonmc.cotton.gui.widget.data.Axis;
  * <p> W is the WWidget class that will represent a single D of data.
  */
 public class WListPanel<D, W extends WWidget> extends WClippedPanel {
+	/**
+	 * The list of data that this list represents.
+	 */
 	protected List<D> data;
+
+	/**
+	 * The supplier of new empty widgets.
+	 */
 	protected Supplier<W> supplier;
+
+	/**
+	 * The widget configurator that configures the passed widget
+	 * to display the passed data.
+	 */
 	protected BiConsumer<D, W> configurator;
 	
 	protected HashMap<D, W> configured = new HashMap<>();
 	protected List<W> unconfigured = new ArrayList<>();
+
+	/**
+	 * The height of each child cell.
+	 */
 	protected int cellHeight = 20;
+
+	/**
+	 * Whether this list has a fixed height for items.
+	 */
 	protected boolean fixedHeight = false;
 	
 	protected int margin = 4;
-	
+
+	/**
+	 * The scroll bar of this list.
+	 */
 	protected WScrollBar scrollBar = new WScrollBar(Axis.VERTICAL);
-	int lastScroll = -1;
+	private int lastScroll = -1;
 
 	public WListPanel(List<D> data, Supplier<W> supplier, BiConsumer<D, W> configurator) {
 		this.data = data;
 		this.supplier = supplier;
 		this.configurator = configurator;
 		scrollBar.setMaxValue(data.size());
+		scrollBar.setParent(this);
 	}
 
 	/**
@@ -157,7 +181,13 @@ public class WListPanel<D, W extends WWidget> extends WClippedPanel {
 		
 		//System.out.println("Children: "+children.size());
 	}
-	
+
+	/**
+	 * Sets the height of this list's items to a constant value.
+	 *
+	 * @param height the item height
+	 * @return this list
+	 */
 	public WListPanel<D, W> setListItemHeight(int height) {
 		cellHeight = height;
 		fixedHeight = true;
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 706a71b..373479b 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
@@ -9,7 +9,15 @@ import io.github.cottonmc.cotton.gui.client.BackgroundPainter;
 import net.fabricmc.api.EnvType;
 import net.fabricmc.api.Environment;
 
+/**
+ * Panels are widgets tthat contain other widgets.
+ */
 public abstract class WPanel extends WWidget {
+	/**
+	 * The widgets contained within this panel.
+	 *
+	 * <p>The list is mutable.
+	 */
 	protected final List<WWidget> children = Lists.newArrayList();
 	@Environment(EnvType.CLIENT)
 	private BackgroundPainter backgroundPainter = null;
@@ -21,7 +29,12 @@ public abstract class WPanel extends WWidget {
 			child.createPeers(c);
 		}
 	}
-	
+
+	/**
+	 * Removes the widget from this panel.
+	 *
+	 * @param w the removed widget
+	 */
 	public void remove(WWidget w) {
 		children.remove(w);
 	}
@@ -30,13 +43,24 @@ public abstract class WPanel extends WWidget {
 	public boolean canResize() {
 		return true;
 	}
-	
+
+	/**
+	 * Sets the {@link BackgroundPainter} of this panel.
+	 *
+	 * @param painter the new painter
+	 * @return this panel
+	 */
 	@Environment(EnvType.CLIENT)
 	public WPanel setBackgroundPainter(BackgroundPainter painter) {
 		this.backgroundPainter = painter;
 		return this;
 	}
-	
+
+	/**
+	 * Gets the current {@link BackgroundPainter} of this panel.
+	 *
+	 * @return the painter
+	 */
 	@Environment(EnvType.CLIENT)
 	public BackgroundPainter getBackgroundPainter() {
 		return this.backgroundPainter;