/*******************************************************************************
* Copyright (c) 2000, 2017 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.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.IStatus;
import org.eclipse.core.runtime.MultiStatus;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.dltk.core.DLTKCore;
import org.eclipse.dltk.ui.DLTKUIPlugin;
import org.eclipse.dltk.ui.ModelElementLabelProvider;
import org.eclipse.dltk.ui.actions.SelectionDispatchAction;
import org.eclipse.dltk.ui.util.ExceptionHandler;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.ui.IWorkbenchSite;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.actions.OpenResourceAction;
import org.eclipse.ui.dialogs.ElementListSelectionDialog;
/**
* 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>
*
*
*/
public class OpenProjectAction extends SelectionDispatchAction
implements IResourceChangeListener {
private static final int EMPTY_SELECTION = 1;
private static final int ELEMENT_SELECTION = 2;
private int fMode;
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);
setText(fWorkbenchAction.getText());
setToolTipText(fWorkbenchAction.getToolTipText());
if (DLTKCore.DEBUG) {
System.err.println("Add help support here..."); //$NON-NLS-1$
}
// PlatformUI.getWorkbench().getHelpSystem().setHelp(this,
// IScriptHelpContextIds.OPEN_PROJECT_ACTION);
}
@Override
public void resourceChanged(IResourceChangeEvent event) {
fWorkbenchAction.resourceChanged(event);
switch (fMode) {
case ELEMENT_SELECTION:
setEnabled(fWorkbenchAction.isEnabled());
break;
case EMPTY_SELECTION:
internalResourceChanged(event);
break;
}
}
private void internalResourceChanged(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(hasCloseProjects());
return;
}
}
}
}
// ---- normal selection -------------------------------------
@Override
public void selectionChanged(ISelection selection) {
setEnabled(hasCloseProjects());
fMode = EMPTY_SELECTION;
}
@Override
public void run(ISelection selection) {
internalRun();
}
// ---- structured selection ---------------------------------------
@Override
public void selectionChanged(IStructuredSelection selection) {
if (selection.isEmpty()) {
setEnabled(hasCloseProjects());
fMode = EMPTY_SELECTION;
return;
}
if (!hasCloseProjects()) {
setEnabled(false);
return;
}
fWorkbenchAction.selectionChanged(selection);
setEnabled(fWorkbenchAction.isEnabled());
fMode = ELEMENT_SELECTION;
}
@Override
public void run(IStructuredSelection selection) {
if (selection.isEmpty()) {
internalRun();
return;
}
fWorkbenchAction.run();
}
private void internalRun() {
ElementListSelectionDialog dialog = new ElementListSelectionDialog(
getShell(), new ModelElementLabelProvider());
dialog.setTitle(ActionMessages.OpenProjectAction_dialog_title);
dialog.setMessage(ActionMessages.OpenProjectAction_dialog_message);
dialog.setElements(getClosedProjects());
dialog.setMultipleSelection(true);
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) {
}
}
private IWorkspaceRunnable createRunnable(final Object[] projects) {
return monitor -> {
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(DLTKUIPlugin.PLUGIN_ID,
IStatus.ERROR,
ActionMessages.OpenProjectAction_error_message,
e);
errorStatus.merge(e.getStatus());
}
}
monitor.done();
if (errorStatus != null)
throw new CoreException(errorStatus);
};
}
private Object[] getClosedProjects() {
IProject[] projects = ResourcesPlugin.getWorkspace().getRoot()
.getProjects();
List<IProject> 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 hasCloseProjects() {
IProject[] projects = ResourcesPlugin.getWorkspace().getRoot()
.getProjects();
for (int i = 0; i < projects.length; i++) {
if (!projects[i].isOpen())
return true;
}
return false;
}
}