Add dropdown scrolling and allow empty string and negative sign in coordinates

Author: kevinthegreat1

src/main/java/de/hysky/skyblocker/skyblock/waypoint/AbstractWaypointsScreen.java

@@ -37,7 +37,7 @@ public AbstractWaypointsScreen(Text title, T parent, Multimap<String, WaypointCa
     protected void init() {
         super.init();
         waypointsListWidget = addDrawableChild(new WaypointsListWidget(client, this, width, height - 96, 32, 24));
-        islandWidget = addDrawableChild(new DropdownWidget<>(client, width - 160, 8, 150, Arrays.asList(Location.values()), this::islandChanged, Location.from(island)));
+        islandWidget = addDrawableChild(new DropdownWidget<>(client, width - 160, 8, 150, height - 8, Arrays.asList(Location.values()), this::islandChanged, Location.from(island)));
     }
 
     @Override
@@ -50,6 +50,14 @@ public boolean mouseClicked(double mouseX, double mouseY, int button) {
         return mouseClicked;
     }
 
+    @Override
+    public boolean mouseScrolled(double mouseX, double mouseY, double horizontalAmount, double verticalAmount) {
+        if (islandWidget.isMouseOver(mouseX, mouseY) && islandWidget.mouseScrolled(mouseX, mouseY, horizontalAmount, verticalAmount)) {
+            return true;
+        }
+        return super.mouseScrolled(mouseX, mouseY, horizontalAmount, verticalAmount);
+    }
+
     protected void islandChanged(Location location) {
         island = location.id();
         waypointsListWidget.setIsland(island);

src/main/java/de/hysky/skyblocker/skyblock/waypoint/DropdownWidget.java

@@ -20,8 +20,8 @@ public class DropdownWidget<T> extends ElementListWidget<DropdownWidget.Entry<T>
     protected T selected;
     protected boolean open;
 
-    public DropdownWidget(MinecraftClient minecraftClient, int x, int y, int width, List<T> entries, Consumer<T> selectCallback, T selected) {
-        super(minecraftClient, width, (entries.size() + 1) * ENTRY_HEIGHT + 8, y, ENTRY_HEIGHT);
+    public DropdownWidget(MinecraftClient minecraftClient, int x, int y, int width, int maxHeight, List<T> entries, Consumer<T> selectCallback, T selected) {
+        super(minecraftClient, width, Math.min((entries.size() + 1) * ENTRY_HEIGHT + 8, maxHeight), y, ENTRY_HEIGHT);
         setX(x);
         this.entries = entries;
         this.selectCallback = selectCallback;
@@ -58,29 +58,44 @@ public void renderWidget(DrawContext context, int mouseX, int mouseY, float delt
         context.getMatrices().push();
         context.getMatrices().translate(0, 0, 100);
 
-        context.fill(getX(), getY(), getX() + width, getY() + headerHeight, 0xFF000000);
-        context.drawHorizontalLine(getX(), getX() + width, getY(), 0xFFFFFFFF);
-        context.drawHorizontalLine(getX(), getX() + width, getY() + headerHeight, 0xFFFFFFFF);
-        context.drawVerticalLine(getX(), getY(), getY() + headerHeight, 0xFFFFFFFF);
-        context.drawVerticalLine(getX() + width, getY(), getY() + headerHeight, 0xFFFFFFFF);
+        int y = getY() - (int) getScrollAmount();
+        int height = getMaxPosition();
+
+        context.fill(getX(), y, getX() + width, y + headerHeight, 0xFF000000);
+        context.drawHorizontalLine(getX(), getX() + width, y, 0xFFFFFFFF);
+        context.drawHorizontalLine(getX(), getX() + width, y + headerHeight, 0xFFFFFFFF);
+        context.drawVerticalLine(getX(), y, y + headerHeight, 0xFFFFFFFF);
+        context.drawVerticalLine(getX() + width, y, y + headerHeight, 0xFFFFFFFF);
 
         if (open) {
-            context.fill(getX(), getY() + headerHeight + 1, getX() + width, getY() + height, 0xFF000000);
-            context.drawHorizontalLine(getX(), getX() + width, getY() + height, 0xFFFFFFFF);
-            context.drawVerticalLine(getX(), getY() + headerHeight, getY() + height, 0xFFFFFFFF);
-            context.drawVerticalLine(getX() + width, getY() + headerHeight, getY() + height, 0xFFFFFFFF);
+            context.fill(getX(), y + headerHeight + 1, getX() + width, y + height, 0xFF000000);
+            context.drawHorizontalLine(getX(), getX() + width, y + height, 0xFFFFFFFF);
+            context.drawVerticalLine(getX(), y + headerHeight, y + height, 0xFFFFFFFF);
+            context.drawVerticalLine(getX() + width, y + headerHeight, y + height, 0xFFFFFFFF);
 
             super.renderWidget(context, mouseX, mouseY, delta);
         } else {
-            renderHeader(context, getRowLeft(), getY() + 4 - (int) getScrollAmount());
+            renderHeader(context, getRowLeft(), y + 4);
         }
 
         context.getMatrices().pop();
     }
 
+    @Override
+    protected void drawMenuListBackground(DrawContext context) {}
+
+    @Override
+    protected void drawHeaderAndFooterSeparators(DrawContext context) {}
+
+    @Override
+    public boolean mouseScrolled(double mouseX, double mouseY, double horizontalAmount, double verticalAmount) {
+        return open && super.mouseScrolled(mouseX, mouseY, horizontalAmount, verticalAmount);
+    }
+
     protected void select(T entry) {
         selected = entry;
         open = false;
+        setScrollAmount(0);
         if (selected != prevSelected) {
             selectCallback.accept(entry);
             prevSelected = selected;

src/main/java/de/hysky/skyblocker/skyblock/waypoint/WaypointsListWidget.java

@@ -239,7 +239,7 @@ private void updateName(String name) {
 
         private boolean checkInt(String string) {
             try {
-                Integer.parseInt(string);
+                parseEmptiableInt(string);
                 return true;
             } catch (NumberFormatException e) {
                 return false;
@@ -261,7 +261,7 @@ private void updateZ(String zString) {
         private void updateInt(String newValueString, int currentValue, Int2ObjectFunction<NamedWaypoint> wither) {
             try {
                 int index = category.category.waypoints().indexOf(waypoint);
-                int newValue = Integer.parseInt(newValueString);
+                int newValue = parseEmptiableInt(newValueString);
                 if (newValue == currentValue) return;
                 waypoint = wither.apply(newValue);
                 if (index >= 0) {
@@ -275,7 +275,7 @@ private void updateInt(String newValueString, int currentValue, Int2ObjectFuncti
         private void updateColor(String colorString) {
             try {
                 int index = category.category.waypoints().indexOf(waypoint);
-                int colorInt = Integer.parseInt(colorString, 16);
+                int colorInt = parseEmptiableInt(colorString, 16);
                 float[] colorComponents = {((colorInt & 0x00FF0000) >> 16) / 255f, ((colorInt & 0x0000FF00) >> 8) / 255f, (colorInt & 0x000000FF) / 255f};
                 float alpha = ((colorInt & 0xFF000000) >>> 24) / 255f;
                 if (Arrays.equals(waypoint.getColorComponents(), colorComponents) && waypoint.alpha == alpha) return;
@@ -288,6 +288,15 @@ private void updateColor(String colorString) {
             }
         }
 
+        private int parseEmptiableInt(String value) throws NumberFormatException {
+            return value.isEmpty() || value.equals("-") ? 0 : Integer.parseInt(value);
+        }
+
+        @SuppressWarnings("SameParameterValue")
+        private int parseEmptiableInt(String value, int radix) throws NumberFormatException {
+            return value.isEmpty() || value.equals("-") ? 0 : Integer.parseInt(value, radix);
+        }
+
         @Override
         public void render(DrawContext context, int index, int y, int x, int entryWidth, int entryHeight, int mouseX, int mouseY, boolean hovered, float tickDelta) {
             context.drawTextWithShadow(client.textRenderer, "X:", width / 2 - 56, y + 6, 0xFFFFFF);