/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.ivyde.eclipse.workspaceresolver;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import org.apache.ivyde.eclipse.IvyPlugin;
import org.apache.ivyde.eclipse.cpcontainer.IvyClasspathContainer;
import org.apache.ivyde.eclipse.cpcontainer.IvyClasspathUtil;
import org.apache.ivyde.eclipse.cpcontainer.IvyMultiResolveJob;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
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.IResourceRuleFactory;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
/**
* This ResourceChangeListener detects when projects linked in as Ivy dependencies are closed. When
* necessary, it will re-resolve Ivy projects which had the dependent project linked into the Ivy
* container before it was closed.
*/
public class WorkspaceResourceChangeListener implements IResourceChangeListener {
public void resourceChanged(IResourceChangeEvent event) {
try {
if (event.getType() == IResourceChangeEvent.PRE_CLOSE
|| event.getType() == IResourceChangeEvent.PRE_DELETE) {
if (!IvyPlugin.getPreferenceStoreHelper().getAutoResolveOnClose()) {
return;
}
IResource res = event.getResource();
IProject project;
switch (res.getType()) {
case IResource.FOLDER:
project = ((IFolder) res).getProject();
break;
case IResource.FILE:
project = ((IFile) res).getProject();
break;
case IResource.PROJECT:
project = (IProject) res;
break;
default:
return;
}
try {
if (project.hasNature(JavaCore.NATURE_ID)) {
projectClosed(JavaCore.create(project));
}
} catch (CoreException e) {
// project doesn't exist or is not open: ignore
}
} else if (event.getType() == IResourceChangeEvent.POST_CHANGE) {
if (!IvyPlugin.getPreferenceStoreHelper().getAutoResolveOnOpen()) {
return;
}
projectOpened(event);
}
} catch (OperationCanceledException oce) {
IvyPlugin.log(IStatus.CANCEL,
"Ivy update of dependent proejects affected by project close operation canceled",
null);
}
}
private void projectClosed(final IJavaProject javaProject) throws JavaModelException {
// Check if one of Ivy projects is being removed
List containers = IvyClasspathUtil.getIvyClasspathContainers(javaProject);
if (containers.isEmpty()) {
return;
}
// Found an Ivy container in this project -- notify dependent projects
// to perform fresh resolve
// Let's try to be nice and use the workspace method to schedule resolves in
// dependent projects after the close operation has finished.
IResourceRuleFactory ruleFactory = ResourcesPlugin.getWorkspace().getRuleFactory();
ISchedulingRule modifyRule = ruleFactory.modifyRule(javaProject.getCorrespondingResource());
List affectedContainers = getAffectedContainers(javaProject.getPath());
IvyMultiResolveJob multiResolveJob = new IvyMultiResolveJob(affectedContainers);
multiResolveJob.setRule(modifyRule);
multiResolveJob.schedule();
}
private void projectOpened(IResourceChangeEvent event) {
// Find out if a project was opened.
IResourceDelta delta = event.getDelta();
if (delta == null) {
return;
}
final Collection projects = new LinkedHashSet();
IResourceDelta[] projDeltas = delta.getAffectedChildren(IResourceDelta.CHANGED);
for (int i = 0; i < projDeltas.length; ++i) {
IResourceDelta projDelta = projDeltas[i];
if ((projDelta.getFlags() & IResourceDelta.OPEN) == 0) {
continue;
}
IResource resource = projDeltas[i].getResource();
if (!(resource instanceof IProject)) {
continue;
}
IJavaProject javaProject = JavaCore.create((IProject) resource);
List/* <IvyClasspathContainer> */containers = IvyClasspathUtil
.getIvyClasspathContainers(javaProject);
Iterator/* <IvyClasspathContainer> */itContainer = containers.iterator();
while (itContainer.hasNext()) {
IvyClasspathContainer ivycp = (IvyClasspathContainer) itContainer.next();
if (!ivycp.getConf().isInheritedResolveInWorkspace()) {
continue;
}
projects.add(resource);
}
}
if (projects.size() == 0) {
return;
}
// Let's try to be nice and use the workspace method to schedule resolves in
// dependent projects after the open operation has finished.
IResourceRuleFactory ruleFactory = ResourcesPlugin.getWorkspace().getRuleFactory();
ISchedulingRule modifyRule = ruleFactory.modifyRule(ResourcesPlugin.getWorkspace()
.getRoot());
List allContainers = getAllContainersExcludingProjects(projects);
IvyMultiResolveJob multiResolveJob = new IvyMultiResolveJob(allContainers);
multiResolveJob.setRule(modifyRule);
multiResolveJob.schedule();
}
/**
* Return the IvyDE container which include the specified project path as ivy dependency
*/
private List getAffectedContainers(IPath projectPath) {
List/* <IvyClasspathContainer> */allContainers = new ArrayList();
IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
IJavaProject[] projects;
try {
projects = JavaCore.create(root).getJavaProjects();
} catch (JavaModelException e) {
// something bad happend in the JDT...
IvyPlugin.log(e);
return allContainers;
}
for (int i = 0; i < projects.length; i++) {
IJavaProject javaProject = projects[i];
List/* <IvyClasspathContainer> */containers = IvyClasspathUtil
.getIvyClasspathContainers(javaProject);
Iterator/* <IvyClasspathContainer> */itContainer = containers.iterator();
while (itContainer.hasNext()) {
IvyClasspathContainer ivycp = (IvyClasspathContainer) itContainer.next();
IClasspathEntry[] containerEntries = ivycp.getClasspathEntries();
for (int j = 0; j < containerEntries.length; j++) {
IClasspathEntry containerEntry = containerEntries[j];
if (containerEntry == null
|| containerEntry.getEntryKind() != IClasspathEntry.CPE_PROJECT
|| !containerEntry.getPath().equals(projectPath)) {
continue;
}
allContainers.add(ivycp);
break;
}
}
}
return allContainers;
}
private List getAllContainersExcludingProjects(Collection sourceProjects) {
List/* <IvyClasspathContainer> */allContainers = new ArrayList();
IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
IJavaProject[] projects;
try {
projects = JavaCore.create(root).getJavaProjects();
} catch (JavaModelException e) {
// something bad happend in the JDT...
IvyPlugin.log(e);
return allContainers;
}
for (int i = 0; i < projects.length; i++) {
if (!sourceProjects.contains(projects[i])) {
allContainers.addAll(IvyClasspathUtil.getIvyClasspathContainers(projects[i]));
}
}
return allContainers;
}
}