/*******************************************************************************
* Copyright (c) 2006 Sybase, Inc. 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:
* Sybase, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.parts;
import org.eclipse.gef.EditPart;
import org.eclipse.jst.pagedesigner.css2.ICSSStyle;
import org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer;
import org.eclipse.wst.sse.core.internal.provisional.INodeAdapter;
import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* @author mengbo
* @version 1.5
*/
public class Refresher implements INodeAdapter {
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.sse.core.internal.provisional.INodeAdapter#isAdapterForType(java.lang.Object)
*/
public boolean isAdapterForType(Object type) {
return (type == Refresher.class);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.sse.core.internal.provisional.INodeAdapter#notifyChanged(org.eclipse.wst.sse.core.internal.provisional.INodeNotifier,
* int, java.lang.Object, java.lang.Object, java.lang.Object, int)
*/
public void notifyChanged(INodeNotifier notifier, int eventType,
Object changedFeature, Object oldValue, Object newValue, int pos) {
if (eventType == INodeNotifier.ADD || eventType == INodeNotifier.REMOVE) {
// for ADD and REMOVE, system will fire CHANGE event, so we ignore
// the ADD/REMOVE
// event here.
return;
}
if (notifier instanceof IDOMNode) {
IDOMNode node = (IDOMNode) notifier;
// we need to refresh all CSS style adapter of node and its
// children.
EditPart part = (EditPart) node.getAdapterFor(EditPart.class);
if (part instanceof SubNodeEditPart) {
Node nodeForFigure = ((SubNodeEditPart) part)
.getNodeForFigure();
if (nodeForFigure instanceof IDOMNode) {
refreshChildStyles((IDOMNode) nodeForFigure);
}
}
// we need also find the nearest parent node that has editpart, and
// refresh it.
refreshContainingPart(node,
eventType == INodeNotifier.STRUCTURE_CHANGED);
part = (EditPart) node.getAdapterFor(EditPart.class);
if (part != null) {
((IHTMLGraphicalViewer) part.getViewer()).clearSelectionRange();
}
}
}
/**
* @param node
*/
private void refreshContainingPart(IDOMNode node, boolean recursive) {
if (node.getOwnerDocument() == node) {
EditPart part = (EditPart) node.getAdapterFor(EditPart.class);
if (part != null) {
part.refresh();
}
} else {
while (node != null) {
EditPart part = (EditPart) node.getAdapterFor(EditPart.class);
if (part != null) {
if (part instanceof ElementEditPart) {
((ElementEditPart) part).refreshModelChange(recursive);
} else {
part.refresh();
}
return;
}
node = (IDOMNode) node.getParentNode();
}
}
}
/**
* @param node
*/
private void refreshChildStyles(IDOMNode node) {
NodeList childNodes = node.getChildNodes();
for (int i = 0, size = childNodes.getLength(); i < size; i++) {
refreshChildStyles((IDOMNode) childNodes.item(i));
}
if (node instanceof IDOMElement) {
// only refresh style on element.
ICSSStyle a = (ICSSStyle) node.getAdapterFor(ICSSStyle.class);
if (a != null) {
a.reset();
}
}
}
}