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/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.internal.ui.actions;
import java.util.List;
import org.eclipse.core.expressions.EvaluationContext;
import org.eclipse.core.expressions.Expression;
import org.eclipse.core.expressions.IEvaluationContext;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.internal.ui.launchConfigurations.LaunchShortcutExtension;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
/**
* Launch shortcut action (proxy to a launch shortcut extension)
*/
public class LaunchShortcutAction extends Action {
private String fMode;
private LaunchShortcutExtension fShortcut;
/**
* Constructor for LaunchShortcutAction.
*/
public LaunchShortcutAction(String mode, LaunchShortcutExtension shortcut) {
super(shortcut.getLabel(), shortcut.getImageDescriptor());
fMode = mode;
fShortcut = shortcut;
updateEnablement();
}
/**
* Runs with either the active editor or workbench selection.
*
* @see IAction#run()
*/
public void run() {
IWorkbenchWindow wb = DebugUIPlugin.getActiveWorkbenchWindow();
if (wb != null) {
IWorkbenchPage page = wb.getActivePage();
if (page != null) {
ISelection selection = page.getSelection();
if (selection instanceof IStructuredSelection) {
fShortcut.launch(selection, fMode);
} else {
IEditorPart editor = page.getActiveEditor();
if (editor != null) {
fShortcut.launch(editor, fMode);
}
}
}
}
}
/**
* Since these actions are re-created each time the run/debug as menu is
* filled, the enablement of this action is static.
*/
private void updateEnablement() {
IWorkbenchWindow wb = DebugUIPlugin.getActiveWorkbenchWindow();
boolean enabled = false;
if (wb != null) {
IWorkbenchPage page = wb.getActivePage();
if (page != null) {
ISelection selection = page.getSelection();
if (selection instanceof IStructuredSelection) {
IStructuredSelection structuredSelection = (IStructuredSelection)selection;
try {
// check enablement logic, if any
Expression expression = fShortcut.getShortcutEnablementExpression();
if (expression == null) {
enabled = !structuredSelection.isEmpty();
} else {
List list = structuredSelection.toList();
IEvaluationContext context = new EvaluationContext(null, list);
context.addVariable("selection", list); //$NON-NLS-1$
enabled = fShortcut.evalEnablementExpression(context, expression);
}
} catch (CoreException e) {
}
} else {
IEditorPart editor = page.getActiveEditor();
if (editor != null) {
enabled = true;
}
}
}
}
setEnabled(enabled);
}
}
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