/*******************************************************************************
* 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.util;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.IWorkspaceDescription;
import org.eclipse.core.resources.IncrementalProjectBuilder;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.dltk.internal.corext.util.Messages;
import org.eclipse.dltk.internal.ui.DLTKUIMessages;
import org.eclipse.dltk.ui.DLTKUIPlugin;
import org.eclipse.swt.custom.BusyIndicator;
import org.osgi.framework.Bundle;
public class CoreUtility {
/**
* Creates a folder and all parent folders if not existing. Project must
* exist. <code> org.eclipse.ui.dialogs.ContainerGenerator</code> is too
* heavy (creates a runnable)
*/
public static void createFolder(IFolder folder, boolean force,
boolean local, IProgressMonitor monitor) throws CoreException {
if (!folder.exists()) {
IContainer parent = folder.getParent();
if (parent instanceof IFolder) {
createFolder((IFolder) parent, force, local, null);
}
folder.create(force, local, monitor);
}
}
/**
* Creates an extension. If the extension plugin has not been loaded a busy
* cursor will be activated during the duration of the load.
*
* @param element
* the config element defining the extension
* @param classAttribute
* the name of the attribute carrying the class
* @return the extension object
*/
public static Object createExtension(final IConfigurationElement element,
final String classAttribute) throws CoreException {
// If plugin has been loaded create extension.
// Otherwise, show busy cursor then create extension.
String pluginId = element.getContributor().getName();
Bundle bundle = Platform.getBundle(pluginId);
if (bundle != null && bundle.getState() == Bundle.ACTIVE) {
return element.createExecutableExtension(classAttribute);
} else {
final Object[] ret = new Object[1];
final CoreException[] exc = new CoreException[1];
BusyIndicator.showWhile(null, new Runnable() {
public void run() {
try {
ret[0] = element
.createExecutableExtension(classAttribute);
} catch (CoreException e) {
exc[0] = e;
}
}
});
if (exc[0] != null)
throw exc[0];
else
return ret[0];
}
}
/**
* Set the autobuild to the value of the parameter and return the old one.
*
* @param state
* the value to be set for autobuilding.
* @return the old value of the autobuild state
*/
public static boolean enableAutoBuild(boolean state) throws CoreException {
IWorkspace workspace = ResourcesPlugin.getWorkspace();
IWorkspaceDescription desc = workspace.getDescription();
boolean isAutoBuilding = desc.isAutoBuilding();
if (isAutoBuilding != state) {
desc.setAutoBuilding(state);
workspace.setDescription(desc);
}
return isAutoBuilding;
}
private static final class BuildJob extends Job {
private final IProject fProject;
public BuildJob(String name, IProject project) {
super(name);
fProject = project;
}
public boolean isCoveredBy(BuildJob other) {
if (other.fProject == null) {
return true;
}
return fProject != null && fProject.equals(other.fProject);
}
@Override
protected IStatus run(IProgressMonitor monitor) {
synchronized (getClass()) {
if (monitor.isCanceled()) {
return Status.CANCEL_STATUS;
}
Job[] buildJobs = Job.getJobManager().find(
ResourcesPlugin.FAMILY_MANUAL_BUILD);
for (int i = 0; i < buildJobs.length; i++) {
Job curr = buildJobs[i];
if (curr != this && curr instanceof BuildJob) {
BuildJob job = (BuildJob) curr;
if (job.isCoveredBy(this)) {
curr.cancel(); // cancel all other build jobs of
// our kind
}
}
}
}
try {
if (fProject != null) {
monitor.beginTask(Messages.format(
DLTKUIMessages.CoreUtility_buildproject_taskname,
fProject.getName()), 2);
fProject.build(IncrementalProjectBuilder.FULL_BUILD,
new SubProgressMonitor(monitor, 1));
DLTKUIPlugin.getWorkspace().build(
IncrementalProjectBuilder.INCREMENTAL_BUILD,
new SubProgressMonitor(monitor, 1));
} else {
monitor.beginTask(
DLTKUIMessages.CoreUtility_buildall_taskname, 2);
DLTKUIPlugin.getWorkspace().build(
IncrementalProjectBuilder.FULL_BUILD,
new SubProgressMonitor(monitor, 2));
}
} catch (CoreException e) {
return e.getStatus();
} catch (OperationCanceledException e) {
return Status.CANCEL_STATUS;
} finally {
monitor.done();
}
return Status.OK_STATUS;
}
@Override
public boolean belongsTo(Object family) {
return ResourcesPlugin.FAMILY_MANUAL_BUILD == family;
}
}
/**
* Returns a build job
*
* @param project
* The project to build or <code>null</code> to build the
* workspace.
*/
public static Job getBuildJob(final IProject project) {
Job buildJob = new BuildJob(DLTKUIMessages.CoreUtility_job_title,
project);
buildJob.setRule(ResourcesPlugin.getWorkspace().getRuleFactory()
.buildRule());
buildJob.setUser(true);
return buildJob;
}
}