Fix decorator palettes and stale theme on swapped panels

- Decorator palettes no longer look up a layer they don't have
- Sidebar and inspector panels pick up a theme switch made while they were off screen

core/src/main/java/art/arcane/iris/studio/map/BiomePalettePlacement.java

@@ -50,14 +50,15 @@ abstract class BiomePalettePlacement {
         RNG postRandom = new RNG(engine.getSeedManager().getPost());
         int seaLevel = seaLevel(engine.getDimension());
         int index = palette.index();
-        IrisBiomePaletteLayer layer = palette.layerIn(biome);
         return switch (palette.kind()) {
-            case LAYER -> new StackedLayer(layer, index, biome.getLayerHeightGenerators(terrainRandom, data), terrainRandom, data);
-            case SEA_LAYER -> new StackedLayer(layer, index, biome.getLayerSeaHeightGenerators(terrainRandom, data), terrainRandom, data);
-            case CAVE_CEILING_LAYER -> new StackedLayer(layer, index, biome.getCaveCeilingLayerHeightGenerators(carveRandom, data),
-                    carveRandom, data);
-            case WALL -> new SingleBlocks(layer, data, carveRandom, seaLevel);
-            case SLAB -> new SingleBlocks(layer, data, postRandom, seaLevel);
+            case LAYER -> new StackedLayer(palette.layerIn(biome), index, biome.getLayerHeightGenerators(terrainRandom, data),
+                    terrainRandom, data);
+            case SEA_LAYER -> new StackedLayer(palette.layerIn(biome), index, biome.getLayerSeaHeightGenerators(terrainRandom, data),
+                    terrainRandom, data);
+            case CAVE_CEILING_LAYER -> new StackedLayer(palette.layerIn(biome), index,
+                    biome.getCaveCeilingLayerHeightGenerators(carveRandom, data), carveRandom, data);
+            case WALL -> new SingleBlocks(palette.layerIn(biome), data, carveRandom, seaLevel);
+            case SLAB -> new SingleBlocks(palette.layerIn(biome), data, postRandom, seaLevel);
             case DECORATOR -> new Decorations(palette.decoratorIn(biome), engine.getSeedManager().getComponent(), seaLevel, data);
         };
     }

core/src/main/java/art/arcane/iris/studio/map/MapWindow.java

@@ -260,14 +260,13 @@ public final class MapWindow implements MapCanvas.Listener {
         canvas.showView(view);
         canvas.setActive(true);
         showControls(mapControls);
-        inspectorSlot.removeAll();
         if (view == MapView.REGIONS) {
             showRegionExplorer(previousView);
         } else if (view == MapView.BIOMES) {
             showBiomeExplorer();
         } else {
             useSidebar(viewListScroll);
-            inspectorSlot.add(legendPanel, BorderLayout.CENTER);
+            useInspector(legendPanel);
         }
         showCard(MAP_CARD);
         canvas.requestFocusInWindow();
@@ -293,9 +292,9 @@ public final class MapWindow implements MapCanvas.Listener {
     // The region and biome views share how the map draws its picks, so their switches show the same choice.
     private void showPickInspector(PickInspectorPanel inspector) {
         inspector.selectDisplay(canvas.pickDisplay());
-        pickInspectorSplit.setTopComponent(inspector);
-        pickInspectorSplit.setBottomComponent(legendPanel);
-        inspectorSlot.add(pickInspectorSplit, BorderLayout.CENTER);
+        pickInspectorSplit.setTopComponent(StudioTheme.matchTheme(inspector));
+        pickInspectorSplit.setBottomComponent(StudioTheme.matchTheme(legendPanel));
+        useInspector(pickInspectorSplit);
     }
 
     private void stylePickInspectorSplit() {
@@ -316,8 +315,7 @@ public final class MapWindow implements MapCanvas.Listener {
         canvas.setActive(false);
         showControls(explorerControls);
         useSidebar(viewListAbove(paletteExplorer.paletteSidebar()));
-        inspectorSlot.removeAll();
-        inspectorSlot.add(paletteExplorer.paletteInspector(), BorderLayout.CENTER);
+        useInspector(paletteExplorer.paletteInspector());
         showCard(PALETTES_CARD);
         EventQueue.invokeLater(() -> viewList.select(currentView));
         if (firstOpen) {
@@ -331,8 +329,7 @@ public final class MapWindow implements MapCanvas.Listener {
         canvas.setActive(false);
         showControls(explorerControls);
         useSidebar(viewListAbove(explorer.browser()));
-        inspectorSlot.removeAll();
-        inspectorSlot.add(explorer.overview(), BorderLayout.CENTER);
+        useInspector(explorer.overview());
         showCard(view.name());
         EventQueue.invokeLater(() -> viewList.select(currentView));
         if (firstOpen) {
@@ -352,8 +349,7 @@ public final class MapWindow implements MapCanvas.Listener {
         canvas.setActive(false);
         showControls(worldControls, explorerControls);
         useSidebar(viewListScroll);
-        inspectorSlot.removeAll();
-        inspectorSlot.add(worldExplorer.legend(), BorderLayout.CENTER);
+        useInspector(worldExplorer.legend());
         showCard(WORLD_CARD);
         worldExplorer.show(worldCenterX, worldCenterZ, firstOpen || mapMoved);
     }
@@ -430,7 +426,7 @@ public final class MapWindow implements MapCanvas.Listener {
     private JSplitPane viewListAbove(JComponent explorerSidebar) {
         boolean firstUse = explorerSplit.getBottomComponent() == null;
         explorerSplit.setTopComponent(viewListScroll);
-        explorerSplit.setBottomComponent(explorerSidebar);
+        explorerSplit.setBottomComponent(StudioTheme.matchTheme(explorerSidebar));
         if (firstUse) {
             EventQueue.invokeLater(this::fitViewListAboveExplorer);
         }
@@ -549,7 +545,12 @@ public final class MapWindow implements MapCanvas.Listener {
 
     private void useSidebar(JComponent component) {
         sidebar.removeAll();
-        sidebar.add(component, BorderLayout.CENTER);
+        sidebar.add(StudioTheme.matchTheme(component), BorderLayout.CENTER);
+    }
+
+    private void useInspector(JComponent component) {
+        inspectorSlot.removeAll();
+        inspectorSlot.add(StudioTheme.matchTheme(component), BorderLayout.CENTER);
     }
 
     private void showCard(String card) {

core/src/main/java/art/arcane/iris/studio/map/StudioTheme.java

@@ -26,6 +26,8 @@ import art.arcane.iris.spi.IrisLogging;
 import art.arcane.iris.configuration.IrisSettings;
 
 import javax.swing.BorderFactory;
+import javax.swing.JComponent;
+import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.border.Border;
 import java.awt.Color;
@@ -64,6 +66,7 @@ final class StudioTheme {
     static final int OVERLAY_ARC = 10;
 
     private static final boolean DARK_WITHOUT_SYSTEM_PREFERENCE = true;
+    private static final String MATCHED_DARK_PROPERTY = "iris.studio.matchedDark";
     private static final AtomicBoolean INSTALLED = new AtomicBoolean();
     private static final ExecutorService SYSTEM_CHECK = Executors.newSingleThreadExecutor(runnable -> {
         Thread thread = new Thread(runnable, "Iris Theme Check");
@@ -188,6 +191,19 @@ final class StudioTheme {
         };
     }
 
+    /**
+     * A theme switch only reaches components inside a window, so a panel swapped out at the time keeps the old theme until
+     * this brings it up to date. Call it when putting a panel back on screen.
+     */
+    static <T extends JComponent> T matchTheme(T component) {
+        if (Boolean.valueOf(dark).equals(component.getClientProperty(MATCHED_DARK_PROPERTY))) {
+            return component;
+        }
+        SwingUtilities.updateComponentTreeUI(component);
+        component.putClientProperty(MATCHED_DARK_PROPERTY, dark);
+        return component;
+    }
+
     private static void switchTo(boolean nextDark) {
         if (nextDark == dark) {
             return;