Style workspace selection dialog with default theme setting

Author: vogella

bundles/org.eclipse.ui.ide.application/src/org/eclipse/ui/internal/ide/application/IDEApplication.java

@@ -42,6 +42,7 @@
 import org.eclipse.core.runtime.Status;
 import org.eclipse.core.runtime.jobs.Job;
 import org.eclipse.core.runtime.preferences.ConfigurationScope;
+import org.eclipse.core.runtime.preferences.IEclipsePreferences;
 import org.eclipse.equinox.app.IApplication;
 import org.eclipse.equinox.app.IApplicationContext;
 import org.eclipse.jface.dialogs.IDialogConstants;
@@ -52,6 +53,7 @@
 import org.eclipse.osgi.service.datalocation.Location;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.layout.FillLayout;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
@@ -94,6 +96,8 @@ public class IDEApplication implements IApplication, IExecutableExtension {
 
 	private static final String USER_NAME = "user.name"; //$NON-NLS-1$
 
+	private boolean isDark;
+
 	// Use the branding plug-in of the platform feature since this is most likely
 	// to change on an update of the IDE.
 	private static final String WORKSPACE_CHECK_REFERENCE_BUNDLE_NAME = "org.eclipse.platform"; //$NON-NLS-1$
@@ -145,6 +149,9 @@ public Object start(IApplicationContext appContext) throws Exception {
 		Job.getJobManager().suspend();
 
 		Display display = createDisplay();
+
+		initializeDefaultTheme(display);
+
 		// processor must be created before we start event loop
 		DelayedEventsProcessor processor = new DelayedEventsProcessor(display);
 
@@ -587,6 +594,14 @@ protected Shell getParentShell() {
 				return null;
 			}
 
+			@Override
+			protected Control createContents(Composite parent) {
+				Control contents = super.createContents(parent);
+				if (isDark) {
+					applyDarkStyles(getShell());
+				}
+				return contents;
+			}
 		}.prompt(force);
 	}
 
@@ -852,6 +867,42 @@ protected static Version toMajorMinorVersion(Version version) {
 		return new Version(version.getMajor(), version.getMinor(), 0);
 	}
 
+	protected void initializeDefaultTheme(Display display) {
+		IEclipsePreferences configurationScopeNode = ConfigurationScope.INSTANCE
+				.getNode("org.eclipse.e4.ui.css.swt.theme"); //$NON-NLS-1$
+		String defaultThemeId = configurationScopeNode.get("themeid", null); //$NON-NLS-1$
+		isDark = defaultThemeId != null && defaultThemeId.contains("dark"); //$NON-NLS-1$
+		if (isDark) {
+			display.addListener(SWT.Show, event -> {
+				if (event.widget instanceof Shell shell) {
+					applyDarkStyles(shell);
+				}
+			});
+		}
+	}
+
+	private void applyDarkStyles(Shell shell) {
+		Color bg = new Color(shell.getDisplay(), 72, 72, 76); // #48484c
+		Color fg = new Color(shell.getDisplay(), 238, 238, 238); // #eeeeee
+		shell.setBackground(bg);
+		shell.setForeground(fg);
+		applyStylesRecursive(shell, bg, fg);
+		shell.addDisposeListener(e -> {
+			bg.dispose();
+			fg.dispose();
+		});
+	}
+
+	private void applyStylesRecursive(Control control, Color bg, Color fg) {
+		control.setBackground(bg);
+		control.setForeground(fg);
+		if (control instanceof Composite composite) {
+			for (Control child : composite.getChildren()) {
+				applyStylesRecursive(child, bg, fg);
+			}
+		}
+	}
+
 	@Override
 	public void stop() {
 		final IWorkbench workbench = PlatformUI.getWorkbench();

bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/ChooseWorkspaceDialog.java

@@ -39,6 +39,7 @@
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.dialogs.TitleAreaDialog;
+import org.eclipse.jface.resource.JFaceColors;
 import org.eclipse.jface.util.Geometry;
 import org.eclipse.jface.window.Window;
 import org.eclipse.osgi.util.NLS;
@@ -319,6 +320,7 @@ private void createRecentWorkspacesComposite(final Composite composite) {
 		recentWorkspacesForm.getBody().setLayout(new GridLayout());
 		ExpandableComposite recentWorkspacesExpandable = toolkit.createExpandableComposite(recentWorkspacesForm.getBody(),
 				ExpandableComposite.TWISTIE);
+		recentWorkspacesExpandable.setTitleBarForeground(composite.getForeground());
 		recentWorkspacesForm.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
 		recentWorkspacesExpandable.setBackground(composite.getBackground());
 		recentWorkspacesExpandable.setText(IDEWorkbenchMessages.ChooseWorkspaceDialog_recentWorkspaces);
@@ -352,6 +354,7 @@ public void expansionStateChanged(ExpansionEvent e) {
 			final String recentWorkspace = uniqueWorkspaceEntry.getValue();
 
 			Link link = new Link(panel, SWT.WRAP);
+			link.setForeground(JFaceColors.getHyperlink(composite.getDisplay()));
 			link.setLayoutData(new RowData(SWT.DEFAULT, SWT.DEFAULT));
 			link.setText("<a>" + uniqueWorkspaceEntry.getKey() + "</a>"); //$NON-NLS-1$ //$NON-NLS-2$
 			link.setToolTipText(recentWorkspace);

bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/ChooseWorkspaceWithSettingsDialog.java

@@ -128,6 +128,7 @@ private void createSettingsControls(Composite workArea) {
 
 		copySettingsExpandable.setText(IDEWorkbenchMessages.ChooseWorkspaceWithSettingsDialog_SettingsGroupName);
 		copySettingsExpandable.setBackground(workArea.getBackground());
+		copySettingsExpandable.setTitleBarForeground(workArea.getForeground());
 		copySettingsExpandable.setLayout(new GridLayout());
 		copySettingsExpandable.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
 		copySettingsExpandable.addExpansionListener(new IExpansionListener() {