Add active launch indicator to launch history menu

Adds a visual indicator to launch configurations that are currently
active in the launch history menu.

Author: SougandhS

debug/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/AbstractLaunchHistoryAction.java

@@ -23,11 +23,13 @@
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.debug.core.DebugPlugin;
+import org.eclipse.debug.core.ILaunch;
 import org.eclipse.debug.core.ILaunchConfiguration;
 import org.eclipse.debug.core.ILaunchConfigurationType;
 import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
 import org.eclipse.debug.core.ILaunchManager;
 import org.eclipse.debug.internal.core.IInternalDebugCoreConstants;
+import org.eclipse.debug.internal.ui.DebugPluginImages;
 import org.eclipse.debug.internal.ui.DebugUIPlugin;
 import org.eclipse.debug.internal.ui.ILaunchHistoryChangedListener;
 import org.eclipse.debug.internal.ui.ILaunchLabelChangedListener;
@@ -40,18 +42,23 @@
 import org.eclipse.debug.internal.ui.launchConfigurations.LaunchShortcutExtension;
 import org.eclipse.debug.internal.ui.launchConfigurations.LaunchShortcutSelectionDialog;
 import org.eclipse.debug.internal.ui.stringsubstitution.SelectedResourceManager;
+import org.eclipse.debug.ui.IDebugUIConstants;
 import org.eclipse.debug.ui.ILaunchGroup;
 import org.eclipse.debug.ui.ILaunchShortcut;
 import org.eclipse.jface.action.Action;
 import org.eclipse.jface.action.ActionContributionItem;
 import org.eclipse.jface.action.IAction;
 import org.eclipse.jface.dialogs.IDialogConstants;
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.jface.viewers.DecorationOverlayIcon;
+import org.eclipse.jface.viewers.IDecoration;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.MenuAdapter;
 import org.eclipse.swt.events.MenuEvent;
+import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Event;
@@ -347,8 +354,28 @@ protected void fillMenu(Menu menu) {
 
 		// Add favorites
 		int accelerator = 1;
+		ILaunch[] launches = DebugPlugin.getDefault().getLaunchManager().getLaunches();
 		for (ILaunchConfiguration launch : favoriteList) {
 			LaunchAction action= new LaunchAction(launch, getMode());
+			if (checkIfLaunchActive(launch, launches)) {
+				action.setText(action.getText() + " (Running)"); //$NON-NLS-1$
+
+				ImageDescriptor base = action.getImageDescriptor();
+
+				if (base != null) {
+					// Overlay icon (small running indicator)
+					ImageDescriptor overlay = DebugPluginImages
+							.getImageDescriptor(IDebugUIConstants.IMG_OBJS_INSTRUCTION_POINTER_TOP);
+
+					Image baseImage = base.createImage();
+
+					DecorationOverlayIcon decorated = new DecorationOverlayIcon(baseImage, overlay,
+							IDecoration.TOP_LEFT);
+
+					action.setImageDescriptor(ImageDescriptor.createFromImage(decorated.createImage()));
+				}
+
+			}
 			addToMenu(menu, action, accelerator);
 			accelerator++;
 		}
@@ -361,6 +388,24 @@ protected void fillMenu(Menu menu) {
 		// Add history launches next
 		for (ILaunchConfiguration launch : historyList) {
 			LaunchAction action= new LaunchAction(launch, getMode());
+			if (checkIfLaunchActive(launch, launches)) {
+				action.setText(action.getText() + " (Running)"); //$NON-NLS-1$
+
+				ImageDescriptor base = action.getImageDescriptor();
+
+				if (base != null) {
+					// Overlay icon (small running indicator)
+					ImageDescriptor overlay = DebugPluginImages
+							.getImageDescriptor(IDebugUIConstants.IMG_OBJS_INSTRUCTION_POINTER_TOP);
+
+					Image baseImage = base.createImage();
+
+					DecorationOverlayIcon decorated = new DecorationOverlayIcon(baseImage, overlay,
+							IDecoration.TOP_LEFT);
+
+					action.setImageDescriptor(ImageDescriptor.createFromImage(decorated.createImage()));
+				}
+			}
 			addToMenu(menu, action, accelerator);
 			accelerator++;
 		}
@@ -373,6 +418,24 @@ protected void fillMenu(Menu menu) {
 		}
 	}
 
+	/**
+	 * Returns whether the given launch configuration has been launched and active
+	 * now.
+	 *
+	 * @param launchConfiguration the launch configuration
+	 * @param launches            the current active launches
+	 * @return {@code true} if a matching launch exists, {@code false} otherwise
+	 */
+	private boolean checkIfLaunchActive(ILaunchConfiguration launchConfiguration, ILaunch[] launches) {
+		for (ILaunch launch : launches) {
+			ILaunchConfiguration activeLaunch = launch.getLaunchConfiguration();
+			if (activeLaunch != null && activeLaunch.equals(launchConfiguration) && !launch.isTerminated()) {
+				return true;
+			}
+		}
+		return false;
+	}
+
 	/**
 	 * Adds a separator to the given menu
 	 *