Decorations: Remove non jni install path

The client-property approach for java >= 12 resulted in window resizing failing
if it causes the window to be realized. Setting the 'fullSizeContentView' and
'transparentTitleBar' client-properties resulted in a native resize happening
inside 'Component#reshape' causing unexpected resize results.
We replace it with our jni approach to have better control over what happens to the window sizes.

Fixes #230

macos/src/main/java/com/github/weisj/darklaf/platform/macos/JNIDecorationsMacOS.java

@@ -35,7 +35,8 @@ public final class JNIDecorationsMacOS {
 
     public static native void installDecorations(final long hwnd);
 
-    public static native void uninstallDecorations(final long hwnd);
+    public static native void uninstallDecorations(final long hwnd,
+            final boolean fullSizeContent, final boolean transparentTitleBar);
 
     public static native void setTitleEnabled(final long hwnd, final boolean enabled);
 

macos/src/main/java/com/github/weisj/darklaf/platform/macos/ui/DecorationInformation.java

@@ -29,21 +29,19 @@ class DecorationInformation {
     protected final boolean fullWindowContentEnabled;
     protected final boolean transparentTitleBarEnabled;
     protected final boolean useColoredTitleBar;
-    protected final boolean jniInstalled;
     protected final JRootPane rootPane;
     protected final boolean titleVisible;
     protected final int titleBarHeight;
     protected final float titleFontSize;
 
     protected DecorationInformation(final long windowHandle, final boolean fullWindowContentEnabled,
-            final boolean transparentTitleBarEnabled, final boolean useColoredTitleBar, final boolean jniInstalled,
+            final boolean transparentTitleBarEnabled, final boolean useColoredTitleBar,
             final JRootPane rootPane,
             final boolean titleVisible, final int titleBarHeight, final float titleFontSize) {
         this.windowHandle = windowHandle;
         this.fullWindowContentEnabled = fullWindowContentEnabled;
         this.transparentTitleBarEnabled = transparentTitleBarEnabled;
         this.useColoredTitleBar = useColoredTitleBar;
-        this.jniInstalled = jniInstalled;
         this.rootPane = rootPane;
         this.titleVisible = titleVisible;
         this.titleBarHeight = titleBarHeight;

macos/src/main/java/com/github/weisj/darklaf/platform/macos/ui/MacOSDecorationsUtil.java

@@ -45,7 +45,7 @@ public final class MacOSDecorationsUtil {
         Window window = SwingUtilities.getWindowAncestor(rootPane);
         long windowHandle = JNIDecorationsMacOS.getComponentPointer(window);
         if (windowHandle == 0) {
-            return new DecorationInformation(0, false, false, false, false, rootPane, false, 0, 0);
+            return new DecorationInformation(0, false, false, false, rootPane, false, 0, 0);
         }
         LOGGER.fine(
                 "Installing decorations for window " + windowHandle + "(coloredTitleBar = " + useColoredTitleBar + ")");
@@ -55,9 +55,7 @@ public final class MacOSDecorationsUtil {
         float titleFontSize = (float) JNIDecorationsMacOS.getTitleFontSize(windowHandle);
         int titleBarHeight = (int) JNIDecorationsMacOS.getTitleBarHeight(windowHandle);
 
-        boolean jniInstall = !SystemInfo.isJavaVersionAtLeast("12");
+        setFullSizeContent(windowHandle, useColoredTitleBar);
-
-        setFullSizeContent(rootPane, windowHandle, jniInstall, useColoredTitleBar);
 
         boolean titleVisible = SystemInfo.isMacOSMojave;
         JNIDecorationsMacOS.setTitleEnabled(windowHandle, titleVisible);
@@ -68,19 +66,12 @@ public final class MacOSDecorationsUtil {
         return new DecorationInformation(
                 windowHandle, fullWindowContent,
                 transparentTitleBar, useColoredTitleBar,
-                jniInstall, rootPane,
+                rootPane, titleVisible, titleBarHeight, titleFontSize);
-                titleVisible, titleBarHeight, titleFontSize);
     }
 
-    private static void setFullSizeContent(final JRootPane rootPane, final long windowHandle,
+    private static void setFullSizeContent(final long windowHandle, final boolean enabled) {
-            final boolean jniInstall, final boolean enabled) {
+        if (enabled) {
-        if (!jniInstall) {
+            JNIDecorationsMacOS.installDecorations(windowHandle);
-            setTransparentTitleBarEnabled(rootPane, enabled);
-            setFullWindowContentEnabled(rootPane, enabled);
-        } else {
-            if (enabled) {
-                JNIDecorationsMacOS.installDecorations(windowHandle);
-            }
         }
     }
 
@@ -89,12 +80,9 @@ public final class MacOSDecorationsUtil {
             return;
         }
         if (information.useColoredTitleBar) {
-            if (information.jniInstalled) {
+            JNIDecorationsMacOS.uninstallDecorations(information.windowHandle,
-                JNIDecorationsMacOS.uninstallDecorations(information.windowHandle);
+                    information.fullWindowContentEnabled,
-            } else {
+                    information.transparentTitleBarEnabled);
-                setFullWindowContentEnabled(information.rootPane, information.fullWindowContentEnabled);
-                setTransparentTitleBarEnabled(information.rootPane, information.transparentTitleBarEnabled);
-            }
         }
         JNIDecorationsMacOS.setTitleEnabled(information.windowHandle, true);
         JNIDecorationsMacOS.releaseWindow(information.windowHandle);
@@ -107,12 +95,4 @@ public final class MacOSDecorationsUtil {
     private static boolean isTransparentTitleBarEnabled(final JRootPane rootPane) {
         return PropertyUtil.getBooleanProperty(rootPane, TRANSPARENT_TITLE_BAR_KEY);
     }
-
-    private static void setFullWindowContentEnabled(final JRootPane rootPane, final boolean enabled) {
-        rootPane.putClientProperty(FULL_WINDOW_CONTENT_KEY, enabled);
-    }
-
-    private static void setTransparentTitleBarEnabled(final JRootPane rootPane, final boolean enabled) {
-        rootPane.putClientProperty(TRANSPARENT_TITLE_BAR_KEY, enabled);
-    }
 }

macos/src/main/objcpp/Decorations.mm

@@ -145,12 +145,17 @@ JNF_COCOA_EXIT(env);
 }
 
 JNIEXPORT void JNICALL
-Java_com_github_weisj_darklaf_platform_macos_JNIDecorationsMacOS_uninstallDecorations(JNIEnv *env, jclass obj, jlong hwnd) {
+Java_com_github_weisj_darklaf_platform_macos_JNIDecorationsMacOS_uninstallDecorations(JNIEnv *env, jclass obj, jlong hwnd,
+    jboolean fullSizeContent, jboolean transparentTitleBar) {
 JNF_COCOA_ENTER(env);
     NSWindow *nsWindow = OBJC(hwnd);
     [JNFRunLoop performOnMainThreadWaiting:YES withBlock:^{
-        nsWindow.styleMask &= ~NSWindowStyleMaskFullSizeContentView;
+        if (fullSizeContent) {
-        nsWindow.titlebarAppearsTransparent = NO;
+            nsWindow.styleMask |= NSWindowStyleMaskFullSizeContentView;
+        } else {
+            nsWindow.styleMask &= ~NSWindowStyleMaskFullSizeContentView;
+        }
+        nsWindow.titlebarAppearsTransparent = transparentTitleBar ? YES : NO;
         [nsWindow contentView].needsDisplay = YES;
     }];
 JNF_COCOA_EXIT(env);