/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.jsdt.ui.actions;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.IWorkspaceRunnable;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.MultiStatus;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.ui.IWorkbenchSite;
import org.eclipse.ui.IWorkingSet;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.actions.OpenResourceAction;
import org.eclipse.ui.dialogs.ListSelectionDialog;
import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin;
import org.eclipse.wst.jsdt.internal.ui.actions.ActionMessages;
import org.eclipse.wst.jsdt.internal.ui.actions.WorkbenchRunnableAdapter;
import org.eclipse.wst.jsdt.internal.ui.util.ExceptionHandler;
import org.eclipse.wst.jsdt.ui.JavaScriptElementLabelProvider;
/**
* Action to open a closed project. Action either opens the closed projects
* provided by the structured selection or presents a dialog from which the
* user can select the projects to be opened.
*
* <p>
* This class may be instantiated; it is not intended to be subclassed.
* </p>
*
*
* Provisional API: This class/interface is part of an interim API that is still under development and expected to
* change significantly before reaching stability. It is being made available at this early stage to solicit feedback
* from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken
* (repeatedly) as the API evolves.
*/
public class OpenProjectAction extends SelectionDispatchAction implements IResourceChangeListener {
private int CLOSED_PROJECTS_SELECTED= 1;
private int OTHER_ELEMENTS_SELECTED= 2;
private OpenResourceAction fWorkbenchAction;
/**
* Creates a new <code>OpenProjectAction</code>. The action requires
* that the selection provided by the site's selection provider is of type <code>
* org.eclipse.jface.viewers.IStructuredSelection</code>.
*
* @param site the site providing context information for this action
*/
public OpenProjectAction(IWorkbenchSite site) {
super(site);
fWorkbenchAction= new OpenResourceAction(site.getShell());
setText(fWorkbenchAction.getText());
setToolTipText(fWorkbenchAction.getToolTipText());
PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.OPEN_PROJECT_ACTION);
setEnabled(hasClosedProjectsInWorkspace());
}
/*
* @see IResourceChangeListener#resourceChanged(IResourceChangeEvent)
*/
public void resourceChanged(IResourceChangeEvent event) {
IResourceDelta delta = event.getDelta();
if (delta != null) {
IResourceDelta[] projDeltas = delta.getAffectedChildren(IResourceDelta.CHANGED);
for (int i = 0; i < projDeltas.length; ++i) {
IResourceDelta projDelta = projDeltas[i];
if ((projDelta.getFlags() & IResourceDelta.OPEN) != 0) {
setEnabled(hasClosedProjectsInWorkspace());
return;
}
}
}
}
//---- normal selection -------------------------------------
/* (non-Javadoc)
* @see org.eclipse.wst.jsdt.ui.actions.SelectionDispatchAction#selectionChanged(org.eclipse.jface.viewers.ISelection)
*/
public void selectionChanged(ISelection selection) {
}
/* (non-Javadoc)
* @see org.eclipse.wst.jsdt.ui.actions.SelectionDispatchAction#run(org.eclipse.jface.viewers.ISelection)
*/
public void run(ISelection selection) {
internalRun(null);
}
private int evaluateSelection(IStructuredSelection selection, List allClosedProjects) {
Object[] array= selection.toArray();
int selectionStatus = 0;
for (int i= 0; i < array.length; i++) {
Object curr= array[i];
if (isClosedProject(curr)) {
if (allClosedProjects != null)
allClosedProjects.add(curr);
selectionStatus |= CLOSED_PROJECTS_SELECTED;
} else {
if (curr instanceof IWorkingSet) {
IAdaptable[] elements= ((IWorkingSet) curr).getElements();
for (int k= 0; k < elements.length; k++) {
Object elem= elements[k];
if (isClosedProject(elem)) {
if (allClosedProjects != null)
allClosedProjects.add(elem);
selectionStatus |= CLOSED_PROJECTS_SELECTED;
}
}
}
selectionStatus |= OTHER_ELEMENTS_SELECTED;
}
}
return selectionStatus;
}
private static boolean isClosedProject(Object element) {
// assume all closed project are rendered as IProject
return element instanceof IProject && !((IProject) element).isOpen();
}
//---- structured selection ---------------------------------------
/* (non-Javadoc)
* @see org.eclipse.wst.jsdt.ui.actions.SelectionDispatchAction#run(org.eclipse.jface.viewers.IStructuredSelection)
*/
public void run(IStructuredSelection selection) {
ArrayList allClosedProjects= new ArrayList();
int selectionStatus= evaluateSelection(selection, allClosedProjects);
if (selectionStatus == CLOSED_PROJECTS_SELECTED) { // only closed projects selected
fWorkbenchAction.selectionChanged(new StructuredSelection(allClosedProjects));
fWorkbenchAction.run();
} else {
internalRun(allClosedProjects);
}
}
private void internalRun(List initialSelection) {
ListSelectionDialog dialog= new ListSelectionDialog(getShell(), getClosedProjectsInWorkspace(), new ArrayContentProvider(), new JavaScriptElementLabelProvider(), ActionMessages.OpenProjectAction_dialog_message);
dialog.setTitle(ActionMessages.OpenProjectAction_dialog_title);
if (initialSelection != null && !initialSelection.isEmpty()) {
dialog.setInitialElementSelections(initialSelection);
}
int result= dialog.open();
if (result != Window.OK)
return;
final Object[] projects= dialog.getResult();
IWorkspaceRunnable runnable= createRunnable(projects);
try {
PlatformUI.getWorkbench().getProgressService().run(true, true, new WorkbenchRunnableAdapter(runnable));
} catch (InvocationTargetException e) {
ExceptionHandler.handle(e, getShell(), ActionMessages.OpenProjectAction_dialog_title, ActionMessages.OpenProjectAction_error_message);
} catch (InterruptedException e) {
// user cancelled
}
}
private IWorkspaceRunnable createRunnable(final Object[] projects) {
return new IWorkspaceRunnable() {
public void run(IProgressMonitor monitor) throws CoreException {
monitor.beginTask("", projects.length); //$NON-NLS-1$
MultiStatus errorStatus= null;
for (int i = 0; i < projects.length; i++) {
IProject project= (IProject)projects[i];
try {
project.open(new SubProgressMonitor(monitor, 1));
} catch (CoreException e) {
if (errorStatus == null)
errorStatus = new MultiStatus(JavaScriptPlugin.getPluginId(), IStatus.ERROR, ActionMessages.OpenProjectAction_error_message, null);
errorStatus.add(e.getStatus());
}
}
monitor.done();
if (errorStatus != null)
throw new CoreException(errorStatus);
}
};
}
private Object[] getClosedProjectsInWorkspace() {
IProject[] projects= ResourcesPlugin.getWorkspace().getRoot().getProjects();
List result= new ArrayList(5);
for (int i = 0; i < projects.length; i++) {
IProject project= projects[i];
if (!project.isOpen())
result.add(project);
}
return result.toArray();
}
private boolean hasClosedProjectsInWorkspace() {
IProject[] projects= ResourcesPlugin.getWorkspace().getRoot().getProjects();
for (int i = 0; i < projects.length; i++) {
if (!projects[i].isOpen())
return true;
}
return false;
}
}