/*****************************************************************************
* Copyright (c) 2004, 2005 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
*
* Contributors: IBM Corporation - initial API and implementation
****************************************************************************/
package org.eclipse.wst.css.ui.views.properties;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.progress.UIJob;
import org.eclipse.ui.views.properties.IPropertySheetPage;
import org.eclipse.ui.views.properties.IPropertySource;
import org.eclipse.ui.views.properties.IPropertySourceProvider;
import org.eclipse.ui.views.properties.PropertySheetPage;
import org.eclipse.wst.css.core.internal.provisional.document.ICSSNode;
import org.eclipse.wst.css.ui.internal.properties.CSSPropertySource;
import org.eclipse.wst.sse.core.internal.provisional.INodeAdapter;
import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier;
import org.eclipse.wst.sse.ui.views.properties.PropertySheetConfiguration;
import org.eclipse.wst.xml.ui.internal.XMLUIMessages;
/**
* Configuration for property sheet page which shows CSS content.
*
* @see org.eclipse.wst.sse.ui.views.properties.PropertySheetConfiguration
* @since 1.0
*/
public class CSSPropertySheetConfiguration extends PropertySheetConfiguration {
private class CSSPropertySheetRefreshAdapter implements INodeAdapter {
public boolean isAdapterForType(Object type) {
return false;
}
public void notifyChanged(INodeNotifier notifier, int eventType, Object changedFeature, Object oldValue, Object newValue, int pos) {
if (fPropertySheetPage != null) {
getPropertiesRefreshJob().addPropertySheetPage(fPropertySheetPage);
}
}
}
private class CSSPropertySourceProvider implements IPropertySourceProvider {
private IPropertySource fPropertySource = null;
private ICSSNode fSource = null;
public IPropertySource getPropertySource(Object object) {
if (fSource != null && object.equals(fSource)) {
return fPropertySource;
}
if (object instanceof ICSSNode) {
fSource = (ICSSNode)object;
fPropertySource = new CSSPropertySource(fSource);
}
else {
fSource = null;
fPropertySource = null;
}
return fPropertySource;
}
}
private class PropertiesRefreshJob extends UIJob {
public static final int UPDATE_DELAY = 200;
private Set propertySheetPages = null;
public PropertiesRefreshJob() {
super(XMLUIMessages.JFaceNodeAdapter_1);
setSystem(true);
setPriority(Job.SHORT);
propertySheetPages = new HashSet(1);
}
void addPropertySheetPage(IPropertySheetPage page) {
propertySheetPages.add(page);
schedule(UPDATE_DELAY);
}
public IStatus runInUIThread(IProgressMonitor monitor) {
Object[] pages = propertySheetPages.toArray();
propertySheetPages.clear();
for (int i = 0; i < pages.length; i++) {
PropertySheetPage page = (PropertySheetPage) pages[i];
if (page.getControl() != null && !page.getControl().isDisposed()) {
page.refresh();
}
}
return Status.OK_STATUS;
}
}
private PropertiesRefreshJob fPropertiesRefreshJob = null;
IPropertySheetPage fPropertySheetPage;
private IPropertySourceProvider fPropertySourceProvider = null;
private INodeAdapter fRefreshAdapter = new CSSPropertySheetRefreshAdapter();
private INodeNotifier[] fSelectedNotifiers;
/**
* Create new instance of CSSPropertySheetConfiguration
*/
public CSSPropertySheetConfiguration() {
// Must have empty constructor to createExecutableExtension
super();
}
public ISelection getInputSelection(IWorkbenchPart selectingPart, ISelection selection) {
// remove UI refresh adapters
if (fSelectedNotifiers != null) {
for (int i = 0; i < fSelectedNotifiers.length; i++) {
fSelectedNotifiers[i].removeAdapter(fRefreshAdapter);
}
fSelectedNotifiers = null;
}
ISelection preferredSelection = super.getInputSelection(selectingPart, selection);
if (preferredSelection instanceof IStructuredSelection) {
Object[] selectedObjects = new Object[((IStructuredSelection) selection).size()];
System.arraycopy(((IStructuredSelection) selection).toArray(), 0, selectedObjects, 0, selectedObjects.length);
for (int i = 0; i < selectedObjects.length; i++) {
if (selectedObjects[i] instanceof ICSSNode) {
ICSSNode node = (ICSSNode) selectedObjects[i];
while (node.getNodeType() == ICSSNode.PRIMITIVEVALUE_NODE || node.getNodeType() == ICSSNode.STYLEDECLITEM_NODE) {
node = node.getParentNode();
selectedObjects[i] = node;
}
}
}
/*
* Add UI refresh adapters and remember notifiers for later
* removal
*/
if (selectedObjects.length > 0) {
List selectedNotifiers = new ArrayList(1);
for (int i = 0; i < selectedObjects.length; i++) {
if (selectedObjects[i] instanceof INodeNotifier) {
selectedNotifiers.add(selectedObjects[i]);
((INodeNotifier) selectedObjects[i]).addAdapter(fRefreshAdapter);
}
}
fSelectedNotifiers = (INodeNotifier[]) selectedNotifiers.toArray(new INodeNotifier[selectedNotifiers.size()]);
}
preferredSelection = new StructuredSelection(selectedObjects);
}
return preferredSelection;
}
PropertiesRefreshJob getPropertiesRefreshJob() {
if (fPropertiesRefreshJob == null) {
fPropertiesRefreshJob = new PropertiesRefreshJob();
}
return fPropertiesRefreshJob;
}
public IPropertySourceProvider getPropertySourceProvider(IPropertySheetPage page) {
if (fPropertySourceProvider == null) {
fPropertySourceProvider = new CSSPropertySourceProvider();
fPropertySheetPage = page;
}
return fPropertySourceProvider;
}
public void unconfigure() {
super.unconfigure();
if (fSelectedNotifiers != null) {
for (int i = 0; i < fSelectedNotifiers.length; i++) {
fSelectedNotifiers[i].removeAdapter(fRefreshAdapter);
}
fSelectedNotifiers = null;
}
}
}