diff options
Diffstat (limited to 'jsf/plugins/org.eclipse.jst.jsf.common/src/org/eclipse/jst/jsf/common/internal/resource/LifecycleListener.java')
| -rw-r--r-- | jsf/plugins/org.eclipse.jst.jsf.common/src/org/eclipse/jst/jsf/common/internal/resource/LifecycleListener.java | 388 |
1 files changed, 0 insertions, 388 deletions
diff --git a/jsf/plugins/org.eclipse.jst.jsf.common/src/org/eclipse/jst/jsf/common/internal/resource/LifecycleListener.java b/jsf/plugins/org.eclipse.jst.jsf.common/src/org/eclipse/jst/jsf/common/internal/resource/LifecycleListener.java deleted file mode 100644 index d37c1bda0..000000000 --- a/jsf/plugins/org.eclipse.jst.jsf.common/src/org/eclipse/jst/jsf/common/internal/resource/LifecycleListener.java +++ /dev/null @@ -1,388 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2001, 2008 Oracle 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 - * - * Contributors: - * Oracle Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.jst.jsf.common.internal.resource; - -import java.util.List; -import java.util.concurrent.CopyOnWriteArrayList; -import java.util.concurrent.atomic.AtomicBoolean; - -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.ResourcesPlugin; -import org.eclipse.jst.jsf.common.internal.ITestTracker; -import org.eclipse.jst.jsf.common.internal.ITestTracker.Event; -import org.eclipse.jst.jsf.common.internal.resource.IResourceLifecycleListener.EventResult; -import org.eclipse.jst.jsf.common.internal.resource.ResourceLifecycleEvent.EventType; -import org.eclipse.jst.jsf.common.internal.resource.ResourceLifecycleEvent.ReasonType; - -/** - * Listens to resource changes and fires lifecycle events - * - * @author cbateman - * - */ -public class LifecycleListener extends ImmutableLifecycleListener implements - IResourceChangeListener -{ - private final static boolean ENABLE_TEST_TRACKING = false; - private static long _seqId; - - private final CopyOnWriteArrayList<IResource> _resources; - final CopyOnWriteArrayList<IResourceLifecycleListener> _listeners; - private AtomicBoolean _isDisposed = new AtomicBoolean( - false); - private ITestTracker _testTracker; // == - // null; - // initialized - // by - // setter - // injection - - /** - * Initialize an inactive lifecycle listener. A workspace listener will not - * be installed by this constructor. The object created using this - * constructor will not fire any events until addResource is called at least - * once to add a target resource - */ - public LifecycleListener() - { - _resources = new CopyOnWriteArrayList<IResource>(); - _listeners = new CopyOnWriteArrayList<IResourceLifecycleListener>(); - } - - /** - * Create a new lifecycle listener for the res - * - * @param res - */ - public LifecycleListener(final IResource res) - { - this(); - _resources.add(res); - ResourcesPlugin.getWorkspace().addResourceChangeListener(this); - } - - /** - * @param resources - */ - public LifecycleListener(final List<IResource> resources) - { - this(); - _resources.addAll(resources); - ResourcesPlugin.getWorkspace().addResourceChangeListener(this); - } - - /** - * @param testTracker - */ - public final void setTestTracker(final ITestTracker testTracker) - { - _testTracker = testTracker; - } - - /** - * Adds listener to the list of objects registered to receive lifecycle - * events for this resource. Only adds the listener if it is not already in - * the list. - * - * Method is thread-safe and may block the caller - * - * Throws {@link IllegalStateException} if isDisposed() == true - * - * @param listener - */ - public void addListener(final IResourceLifecycleListener listener) - { - if (isDisposed()) - { - throw new IllegalStateException(); - } - _listeners.addIfAbsent(listener); - } - - /** - * Removes listener from the list of registered listeners - * - * Method is thread-safe and may block the caller - * - * Throws {@link IllegalStateException} if isDisposed() == true - * - * @param listener - */ - public void removeListener(final IResourceLifecycleListener listener) - { - if (isDisposed()) - { - throw new IllegalStateException(); - } - _listeners.remove(listener); - } - - /** - * @param res - */ - public void addResource(final IResource res) - { - synchronized (_resources) - { - // don't add any resources if we've disposed before acquiring the - // lock - if (isDisposed()) - { - return; - } - - final int preSize = _resources.size(); - if (!_resources.contains(res)) - { - _resources.add(res); - } - - // if the size of the array was 0 - // and is now greater, make sure the listener is added - if (preSize == 0 && _resources.size() > 0) - { - ResourcesPlugin.getWorkspace().addResourceChangeListener(this); - } - } - } - - /** - * If there are no longer resources being targeted, the resource change - * listener will be removed. - * - * @param res - */ - public void removeResource(final IResource res) - { - synchronized (_resources) - { - // don't bother with this stuff if we're disposed. - if (isDisposed()) - { - return; - } - _resources.remove(res); - - // if there are no longer target resources, - // remove the workspace listener - if (_resources.size() == 0) - { - ResourcesPlugin.getWorkspace().removeResourceChangeListener( - this); - } - } - } - - /** - * Release the resource change listener - */ - public void dispose() - { - if (_isDisposed.compareAndSet(false, true)) - { - // ensure that add/removeResource don't cause races to add or - // remove the resource listener - synchronized (_resources) - { - // remove first to minimize the chance that the listener will - // be triggered during the remainder of dispose - ResourcesPlugin.getWorkspace().removeResourceChangeListener( - this); - _resources.clear(); - } - } - } - - /** - * @return true if the listener has been disposed - */ - public boolean isDisposed() - { - return _isDisposed.get(); - } - - public void resourceChanged(final IResourceChangeEvent event) - { - final long seqId = _seqId++; - - if (ENABLE_TEST_TRACKING && _testTracker != null) - { - _testTracker.fireEvent(Event.START_TRACKING, seqId, - "trackMethod_resourceChanged"); //$NON-NLS-1$ - } - - assert (!isDisposed()); - - switch (event.getType()) - { - case IResourceChangeEvent.PRE_CLOSE: - { - final IProject proj = (IProject) event.getResource(); - - // must use iterator to ensure copy on write behaviour - for (final IResource res : _resources) - { - if (proj == res || proj == res.getProject()) - { - fireLifecycleEvent(new ResourceLifecycleEvent(res, - EventType.RESOURCE_INACCESSIBLE, - ReasonType.RESOURCE_PROJECT_CLOSED)); - } - } - } - break; - - case IResourceChangeEvent.PRE_DELETE: - { - final IProject proj = (IProject) event.getResource(); - - // must use iterator to ensure copy on write behaviour - for (final IResource res : _resources) - { - // if the resource being tracked is the resource being - // deleted, - // then fire a resource delete event - if (proj == res) - { - fireLifecycleEvent(new ResourceLifecycleEvent(res, - EventType.RESOURCE_INACCESSIBLE, - ReasonType.RESOURCE_DELETED)); - } - // if the resource being tracked is a resource in the - // project being - // deleted, then fire a project deleted event - else if (proj == res.getProject()) - { - fireLifecycleEvent(new ResourceLifecycleEvent(res, - EventType.RESOURCE_INACCESSIBLE, - ReasonType.RESOURCE_PROJECT_DELETED)); - } - } - } - break; - - case IResourceChangeEvent.POST_CHANGE: - { - for (final IResource res : _resources) - { - IResourceDelta delta = event.getDelta(); - - // long seqId2 = _seqId++; - // if (ENABLE_TEST_TRACKING && _testTracker != null) - // { - // _testTracker.fireEvent(Event.START_TRACKING, seqId2, - // "testFindMember"); - // } - // only care about post change events to resources - // that we are tracking - delta = delta.findMember(res.getFullPath()); - - if (delta != null) - { - visit(delta); - } - - // if (ENABLE_TEST_TRACKING && _testTracker != null) - // { - // _testTracker.fireEvent(Event.STOP_TRACKING, seqId2, - // "testFindMember"); - // } - } - } - break; - - default: - // do nothing - // we only handle these three - } - - if (ENABLE_TEST_TRACKING && _testTracker != null) - { - _testTracker.fireEvent(Event.STOP_TRACKING, seqId, - "trackMethod_resourceChanged"); //$NON-NLS-1$ - } - } - - private void fireLifecycleEvent(final ResourceLifecycleEvent event) - { - boolean disposeAfter = false; - - // NOTE: must use iterator through _listeners so that - // CopyOnWriteArrayList protects us from concurrent modification - for (final IResourceLifecycleListener listener : _listeners) - { - final EventResult result = listener.acceptEvent(event); - disposeAfter |= result.getDisposeAfterEvent(); - } - - if (disposeAfter) - { - dispose(); - } - } - - private void visit(final IResourceDelta delta) - { - assert (!isDisposed()); - - final IResource res = delta.getResource(); - - // the wkspace root is a special case since even though - // it is registered as the target resource, we are interested - // in new projects created in the root - if (res.getType() == IResource.ROOT) - { - handleWorkspaceRoot(delta); - } - - switch (delta.getKind()) - { - case IResourceDelta.CHANGED: - { - // the contents of the file have changed - if ((delta.getFlags() & IResourceDelta.CONTENT) != 0) - { - fireLifecycleEvent(new ResourceLifecycleEvent(res, - EventType.RESOURCE_CHANGED, - ReasonType.RESOURCE_CHANGED_CONTENTS)); - } - } - break; - case IResourceDelta.REMOVED: - { - fireLifecycleEvent(new ResourceLifecycleEvent(res, - EventType.RESOURCE_INACCESSIBLE, - ReasonType.RESOURCE_DELETED)); - } - break; - } - } - - private void handleWorkspaceRoot(final IResourceDelta delta) - { - for (final IResourceDelta childDelta : delta - .getAffectedChildren(IResourceDelta.ADDED)) - { - final IResource res = childDelta.getResource(); - if ((childDelta.getFlags() & IResourceDelta.OPEN) != 0 && - // project was just opened - res.getType() == IResource.PROJECT) - { - fireLifecycleEvent(new ResourceLifecycleEvent(res, - EventType.RESOURCE_ADDED, ReasonType.PROJECT_OPENED)); - } - } - } -} |