/*******************************************************************************
* Copyright (c) 2014 Red Hat, Inc.
* 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:
* Red Hat initial API and implementation
*******************************************************************************/
package org.eclipse.linuxtools.internal.gcov.view.annotatedsource;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.cdt.core.model.ICElement;
import org.eclipse.cdt.ui.CDTUITools;
import org.eclipse.cdt.ui.ICEditor;
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.IncrementalProjectBuilder;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.IPartListener2;
import org.eclipse.ui.IWindowListener;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchPartReference;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.texteditor.ITextEditor;
/**
* Keep track of windows/parts and listen for opened editors to add
* the annotation model.
*/
public final class GcovAnnotationModelTracker {
private static GcovAnnotationModelTracker single;
private final IWorkbench workbench;
private final Map<IProject, IPath> trackedProjects = new HashMap<>();
/**
* Add/Remove a part listener to every window open/closed.
*/
private IWindowListener windowListener = new IWindowListener() {
@Override
public void windowOpened(IWorkbenchWindow window) {
window.getPartService().addPartListener(partListener);
}
@Override
public void windowClosed(IWorkbenchWindow window) {
window.getPartService().removePartListener(partListener);
}
@Override
public void windowActivated(IWorkbenchWindow window) {}
@Override
public void windowDeactivated(IWorkbenchWindow window) {}
};
/**
* Add the GcovAnnotationModel to any part that contains an
* instance of ICEditor.
*/
private IPartListener2 partListener = new IPartListener2() {
@Override
public void partOpened(IWorkbenchPartReference partref) {
if (partref != null) {
annotateCEditor(partref);
}
}
@Override
public void partActivated(IWorkbenchPartReference partRef) {}
@Override
public void partBroughtToTop(IWorkbenchPartReference partRef) {}
@Override
public void partClosed(IWorkbenchPartReference partRef) {}
@Override
public void partDeactivated(IWorkbenchPartReference partRef) {}
@Override
public void partHidden(IWorkbenchPartReference partRef) {}
@Override
public void partVisible(IWorkbenchPartReference partRef) {}
@Override
public void partInputChanged(IWorkbenchPartReference partRef) {}
};
private GcovAnnotationModelTracker (IWorkbench workbench) {
this.workbench = workbench;
// Add part listener for current windows
for (IWorkbenchWindow w : workbench.getWorkbenchWindows()) {
w.getPartService().addPartListener(partListener);
}
// Add window listener to workbench for future windows
workbench.addWindowListener(windowListener);
}
public static GcovAnnotationModelTracker getInstance () {
if (single == null) {
single = new GcovAnnotationModelTracker(PlatformUI.getWorkbench());
}
return single;
}
public IPath getBinaryPath (IProject project) {
return trackedProjects.get(project);
}
public boolean containsProject (IProject project) {
return trackedProjects.containsKey(project);
}
public void addProject (IProject project, IPath binary) {
trackedProjects.put(project, binary);
}
public IProject[] getTrackedProjects() {
return trackedProjects.keySet().toArray(new IProject[0]);
}
public void dispose() {
workbench.removeWindowListener(windowListener);
for (IWorkbenchWindow w : workbench.getWorkbenchWindows()) {
w.getPartService().removePartListener(partListener);
}
}
public void annotateAllCEditors() {
for (IWorkbenchWindow w : workbench.getWorkbenchWindows()) {
for (IWorkbenchPage p : w.getPages()) {
for (IEditorReference e : p.getEditorReferences()) {
annotateCEditor(e);
}
}
}
}
private void annotateCEditor(IWorkbenchPartReference partref) {
IWorkbenchPart part = partref.getPart(false);
if (part instanceof ICEditor) {
ICEditor editor = (ICEditor) part;
ICElement element = CDTUITools.getEditorInputCElement(editor.getEditorInput());
IProject project = element.getCProject().getProject();
// Attach our annotation model to any compatible editor. (ICEditor)
GcovAnnotationModel.attach((ITextEditor) part);
// If a user triggers a build we will not render annotations.
ResourcesPlugin.getWorkspace().addResourceChangeListener(
new ProjectBuildListener(project, editor),
IResourceChangeEvent.POST_BUILD);
}
}
private class ProjectBuildListener implements IResourceChangeListener {
// project to keep track of
private IProject project;
private ICEditor editor;
public ProjectBuildListener(IProject targetProject, ICEditor editor) {
this.editor = editor;
this.project = targetProject;
}
@Override
public void resourceChanged(IResourceChangeEvent event) {
if (project != null && isPostBuildEvent(event)) {
// find the project from event delta and delete its markers
IResourceDelta delta = event.getDelta();
IResourceDelta[] childrenDelta = delta.getAffectedChildren(IResourceDelta.CHANGED);
for (IResourceDelta childDelta : childrenDelta) {
if (isProjectDelta(childDelta, project)) {
// do not track this project and de-register this listener
GcovAnnotationModel.clear(editor);
ResourcesPlugin.getWorkspace().removeResourceChangeListener(this);
trackedProjects.remove(project);
}
}
}
}
/**
* Check if {@link IResourceDelta} represents a change in the specified {@link IProject}..
*
* @param delta IResourceDelta resource delta to check
* @param project IProject project to compare against
* @return boolean true if IResourceDelta is a project and equals the
*/
public boolean isProjectDelta(IResourceDelta delta, IProject project){
if(delta != null){
IResource resource = delta.getResource();
return delta.getKind() == IResourceDelta.CHANGED
&& resource != null
&& resource.getType() == IResource.PROJECT
&& resource.equals(project);
}
return false;
}
/**
* Check if {@link IResourceChangeEvent} is a post-build event.
*
* @param event IResourceChangeEvent event to check
* @return boolean true if IResourceChangeEvent is a post-build event, false
* otherwise
*/
private boolean isPostBuildEvent(IResourceChangeEvent event) {
if(event != null){
int buildKind = event.getBuildKind();
return event.getType() == IResourceChangeEvent.POST_BUILD
&& (buildKind == IncrementalProjectBuilder.FULL_BUILD
|| buildKind == IncrementalProjectBuilder.INCREMENTAL_BUILD
|| buildKind == IncrementalProjectBuilder.CLEAN_BUILD);
}
return false;
}
}
}