/*******************************************************************************
* Copyright (c) 2000, 2007 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
*
*******************************************************************************/
package org.eclipse.dltk.internal.ui.actions;
import java.lang.reflect.InvocationTargetException;
import java.net.URI;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
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.SubMonitor;
import org.eclipse.dltk.core.DLTKCore;
import org.eclipse.dltk.core.DLTKLanguageManager;
import org.eclipse.dltk.core.IModelElement;
import org.eclipse.dltk.core.IScriptProject;
import org.eclipse.dltk.internal.core.ProjectRefreshOperation;
import org.eclipse.dltk.internal.corext.util.Messages;
import org.eclipse.dltk.internal.corext.util.Resources;
import org.eclipse.dltk.ui.DLTKPluginImages;
import org.eclipse.dltk.ui.actions.SelectionDispatchAction;
import org.eclipse.dltk.ui.util.ExceptionHandler;
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;
/**
* Action for refreshing the workspace from the local file system for the
* selected resources and all of their descendants. This action also considers
* external archives managed by the Script Model.
* <p>
* Action is applicable to selections containing resources and Script elements
* down to compilation units.
*
* <p>
* This class may be instantiated; it is not intended to be subclassed.
* </p>
*/
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
* {@link org.eclipse.jface.viewers.IStructuredSelection} .
*
* @param site
* the site providing context information for this action
*/
public RefreshAction(IWorkbenchSite site) {
super(site);
setText(ActionMessages.RefreshAction_label);
setToolTipText(ActionMessages.RefreshAction_toolTip);
DLTKPluginImages.setLocalImageDescriptors(this, "refresh_nav.gif");//$NON-NLS-1$
if (DLTKCore.DEBUG) {
System.err.println("Add help support here..."); //$NON-NLS-1$
}
// PlatformUI.getWorkbench().getHelpSystem().setHelp(this,
// IScriptHelpContextIds.REFRESH_ACTION);
}
/*
* (non-Javadoc) Method declared in SelectionDispatchAction
*/
@Override
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
*/
@Override
public void run(IStructuredSelection selection) {
final IResource[] resources = getResources(selection);
IWorkspaceRunnable operation = new IWorkspaceRunnable() {
public void run(IProgressMonitor monitor) throws CoreException {
SubMonitor progess = SubMonitor.convert(monitor,
ActionMessages.RefreshAction_progressMessage,
resources.length * 2);
List<IModelElement> modelElements = new ArrayList<IModelElement>(
5);
Set<IProject> affectedProjects = new HashSet<IProject>();
for (int r = 0; r < resources.length; r++) {
IResource resource = resources[r];
if (resource.getType() == IResource.PROJECT) {
checkLocationDeleted((IProject) resource);
affectedProjects.add((IProject) resource);
} else if (resource.getType() == IResource.ROOT) {
IProject[] projects = ((IWorkspaceRoot) resource)
.getProjects();
for (int p = 0; p < projects.length; p++) {
checkLocationDeleted(projects[p]);
affectedProjects.add(projects[p]);
}
} else {
affectedProjects.add(resource.getProject());
}
resource.refreshLocal(IResource.DEPTH_INFINITE, progess
.newChild(1));
IModelElement jElement = DLTKCore.create(resource);
if (jElement != null && jElement.exists())
modelElements.add(jElement);
}
// IScriptModel model=
// DLTKCore.create(ResourcesPlugin.getWorkspace().getRoot());
if (DLTKCore.DEBUG) {
System.err
.println("Add refreshing of external archives..."); //$NON-NLS-1$
}
// model.refreshExternalArchives(
// (IModelElement[]) modelElements.toArray(new
// IModelElement[modelElements.size()]),
// new SubProgressMonitor(monitor, resources.length));
final List<IScriptProject> scriptProjects = new ArrayList<IScriptProject>(
affectedProjects.size());
for (IProject project : affectedProjects) {
if (project.exists()
&& DLTKLanguageManager.hasScriptNature(project)) {
scriptProjects.add(DLTKCore.create(project));
}
}
if (!scriptProjects.isEmpty()) {
final ProjectRefreshOperation modelRefresh = new ProjectRefreshOperation(
scriptProjects
.toArray(new IScriptProject[scriptProjects
.size()]));
modelRefresh.run(progess.newChild(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<IResource> result = new ArrayList<IResource>(selection.size());
getResources(result, selection.toArray());
for (Iterator<IResource> iter = result.iterator(); iter.hasNext();) {
IResource resource = iter.next();
if (isDescendent(result, resource))
iter.remove();
}
return result.toArray(new IResource[result.size()]);
}
private void getResources(List<IResource> 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<IResource> 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);
}
}
}
}