/*******************************************************************************
* 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.net.URI;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.filesystem.EFS;
import org.eclipse.core.filesystem.IFileStore;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
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.SubProgressMonitor;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchSite;
import org.eclipse.ui.IWorkingSet;
import org.eclipse.ui.PlatformUI;
import org.eclipse.wst.jsdt.core.IJavaScriptElement;
import org.eclipse.wst.jsdt.core.IJavaScriptModel;
import org.eclipse.wst.jsdt.core.JavaScriptCore;
import org.eclipse.wst.jsdt.internal.corext.util.Messages;
import org.eclipse.wst.jsdt.internal.corext.util.Resources;
import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
import org.eclipse.wst.jsdt.internal.ui.JavaPluginImages;
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;
/**
* Action for refreshing the workspace from the local file system for
* the selected resources and all of their descendants. This action
* also considers external Jars managed by the JavaScript Model.
* <p>
* Action is applicable to selections containing resources and Java
* elements down to compilation units.
*
* <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 RefreshAction extends SelectionDispatchAction {
/**
* Creates a new <code>RefreshAction</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 RefreshAction(IWorkbenchSite site) {
super(site);
setText(ActionMessages.RefreshAction_label);
setToolTipText(ActionMessages.RefreshAction_toolTip);
JavaPluginImages.setLocalImageDescriptors(this, "refresh_nav.gif");//$NON-NLS-1$
PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.REFRESH_ACTION);
}
/* (non-Javadoc)
* Method declared in SelectionDispatchAction
*/
public void selectionChanged(IStructuredSelection selection) {
setEnabled(checkEnabled(selection));
}
private boolean checkEnabled(IStructuredSelection selection) {
if (selection.isEmpty())
return true;
for (Iterator iter= selection.iterator(); iter.hasNext();) {
Object element= iter.next();
if (element instanceof IWorkingSet) {
// don't inspect working sets any deeper.
} else if (element instanceof IAdaptable) {
IResource resource= (IResource)((IAdaptable)element).getAdapter(IResource.class);
if (resource == null)
return false;
if (resource.getType() == IResource.PROJECT && !((IProject)resource).isOpen())
return false;
} else {
return false;
}
}
return true;
}
/* (non-Javadoc)
* Method declared in SelectionDispatchAction
*/
public void run(IStructuredSelection selection) {
final IResource[] resources= getResources(selection);
IWorkspaceRunnable operation= new IWorkspaceRunnable() {
public void run(IProgressMonitor monitor) throws CoreException {
monitor.beginTask(ActionMessages.RefreshAction_progressMessage, resources.length * 2);
monitor.subTask(""); //$NON-NLS-1$
List javaElements= new ArrayList(5);
for (int r= 0; r < resources.length; r++) {
IResource resource= resources[r];
if (resource.getType() == IResource.PROJECT) {
checkLocationDeleted((IProject) resource);
} else if (resource.getType() == IResource.ROOT) {
IProject[] projects = ((IWorkspaceRoot)resource).getProjects();
for (int p = 0; p < projects.length; p++) {
checkLocationDeleted(projects[p]);
}
}
resource.refreshLocal(IResource.DEPTH_INFINITE, new SubProgressMonitor(monitor, 1));
IJavaScriptElement jElement= JavaScriptCore.create(resource);
if (jElement != null && jElement.exists())
javaElements.add(jElement);
}
IJavaScriptModel model= JavaScriptCore.create(ResourcesPlugin.getWorkspace().getRoot());
model.refreshExternalArchives(
(IJavaScriptElement[]) javaElements.toArray(new IJavaScriptElement[javaElements.size()]),
new SubProgressMonitor(monitor, resources.length));
}
};
try {
PlatformUI.getWorkbench().getProgressService().run(true, true, new WorkbenchRunnableAdapter(operation));
} catch (InvocationTargetException e) {
ExceptionHandler.handle(e, getShell(),
ActionMessages.RefreshAction_error_title,
ActionMessages.RefreshAction_error_message);
} catch (InterruptedException e) {
// canceled
}
}
private IResource[] getResources(IStructuredSelection selection) {
if (selection.isEmpty()) {
return new IResource[] {ResourcesPlugin.getWorkspace().getRoot()};
}
List result= new ArrayList(selection.size());
getResources(result, selection.toArray());
for (Iterator iter= result.iterator(); iter.hasNext();) {
IResource resource= (IResource) iter.next();
if (isDescendent(result, resource))
iter.remove();
}
return (IResource[]) result.toArray(new IResource[result.size()]);
}
private void getResources(List result, Object[] elements) {
for (int i= 0; i < elements.length; i++) {
Object element= elements[i];
// Must check working set before IAdaptable since WorkingSet
// implements IAdaptable
if (element instanceof IWorkingSet) {
getResources(result, ((IWorkingSet)element).getElements());
} else if (element instanceof IAdaptable) {
IResource resource= (IResource)((IAdaptable)element).getAdapter(IResource.class);
if (resource == null)
continue;
if (resource.getType() != IResource.PROJECT ||
(resource.getType() == IResource.PROJECT && ((IProject)resource).isOpen())) {
result.add(resource);
}
}
}
}
private boolean isDescendent(List candidates, IResource element) {
IResource parent= element.getParent();
while (parent != null) {
if (candidates.contains(parent))
return true;
parent= parent.getParent();
}
return false;
}
private void checkLocationDeleted(IProject project) throws CoreException {
if (!project.exists())
return;
URI location= project.getLocationURI();
if (location == null)
return;
IFileStore store= EFS.getStore(location);
if (!store.fetchInfo().exists()) {
final String message = Messages.format(
ActionMessages.RefreshAction_locationDeleted_message,
new Object[] { project.getName(), Resources.getLocationString(project) });
final boolean[] result= new boolean[1];
// Must prompt user in UI thread (we're in the operation thread here).
getShell().getDisplay().syncExec(new Runnable() {
public void run() {
result[0]= MessageDialog.openQuestion(getShell(),
ActionMessages.RefreshAction_locationDeleted_title,
message);
}
});
if (result[0]) {
project.delete(true, true, null);
}
}
}
}