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/*******************************************************************************
* Copyright (c) 2015 QNX Software Systems 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:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.qt.ui.resources;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.cdt.internal.qt.core.QtNature;
import org.eclipse.cdt.internal.qt.ui.QtUIPlugin;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.IResourceDeltaVisitor;
import org.eclipse.core.runtime.CoreException;
/**
* Detects the addition or removal of a file to a Qt project. If one of these
* resource changes is found, it triggers an update of the project's *.pro file
* to reflect the change.
*/
public class QtResourceChangeListener implements IResourceChangeListener {
@Override
public void resourceChanged(IResourceChangeEvent event) {
// No need to check for any events other than POST_CHANGE
if ((event.getType() & (IResourceChangeEvent.POST_CHANGE | IResourceChangeEvent.POST_BUILD)) == 0) {
return;
}
final List<IResourceDelta> deltaList = new ArrayList<>();
IResourceDeltaVisitor visitor = new IResourceDeltaVisitor() {
@Override
public boolean visit(IResourceDelta delta) {
IResource resource = delta.getResource();
if (resource.getType() == IResource.ROOT) {
// Always traverse children of the workspace root
return true;
} else if (resource.getType() == IResource.PROJECT) {
// Only traverse children of Qt Projects
try {
IProject project = (IProject) resource;
if (project.exists() && project.hasNature(QtNature.ID)) {
return true;
}
} catch (CoreException e) {
QtUIPlugin.log(e);
}
return false;
} else if (resource.getType() == IResource.FOLDER) {
// First, make sure this isn't the "build" folder
if (resource.getType() == IResource.FOLDER) {
if (resource.getName().equals("build")) { //$NON-NLS-1$
return false;
}
}
// Then check to make sure that the folder lies in a Qt
// Project
try {
IProject project = resource.getProject();
if (project != null && project.hasNature(QtNature.ID)) {
return true;
}
} catch (CoreException e) {
QtUIPlugin.log(e);
}
return false;
}
// We only care about added and removed resources at this point
if ((delta.getKind() & (IResourceDelta.ADDED | IResourceDelta.REMOVED)) == 0) {
return false;
}
if ("cpp".equals(resource.getFileExtension()) //$NON-NLS-1$
|| "h".equals(resource.getFileExtension())) { //$NON-NLS-1$
// If we make it to this point, then we have a .cpp or .h
// file that's been added to or removed from a Qt
// Project. Add it to the list of deltas so we can update
// the project file later.
deltaList.add(delta);
}
// Doesn't really matter since this line can only be reached if
// we're dealing with a file that shouldn't have
// children anyway
return false;
}
};
try {
// Check all projects starting at the workspace root
event.getDelta().accept(visitor);
} catch (CoreException e) {
QtUIPlugin.log(e);
}
// Schedule the job to update the .pro files
if (!deltaList.isEmpty()) {
new QtProjectFileUpdateJob(deltaList).schedule();
}
}
}
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