nextapp.echo2.webcontainer.syncpeer.CompositePeer Maven / Gradle / Ivy
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/*
* This file is part of the Echo Web Application Framework (hereinafter "Echo").
* Copyright (C) 2002-2009 NextApp, Inc.
*
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*/
package nextapp.echo2.webcontainer.syncpeer;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import nextapp.echo2.app.Border;
import nextapp.echo2.app.Component;
import nextapp.echo2.app.Insets;
import nextapp.echo2.app.Panel;
import nextapp.echo2.app.update.ServerComponentUpdate;
import nextapp.echo2.webcontainer.ComponentSynchronizePeer;
import nextapp.echo2.webcontainer.ContainerInstance;
import nextapp.echo2.webcontainer.DomUpdateSupport;
import nextapp.echo2.webcontainer.RenderContext;
import nextapp.echo2.webcontainer.SynchronizePeerFactory;
import nextapp.echo2.webcontainer.propertyrender.BorderRender;
import nextapp.echo2.webcontainer.propertyrender.ColorRender;
import nextapp.echo2.webcontainer.propertyrender.FontRender;
import nextapp.echo2.webcontainer.propertyrender.InsetsRender;
import nextapp.echo2.webrender.output.CssStyle;
import nextapp.echo2.webrender.servermessage.DomUpdate;
/**
* Synchronization peer for nextapp.echo2.app.Composite
* and nextapp.echo2.app.Panel components.
*
* This class should not be extended or used by classes outside of the
* Echo framework.
*/
public class CompositePeer
implements ComponentSynchronizePeer, DomUpdateSupport{
/**
* @see nextapp.echo2.webcontainer.ComponentSynchronizePeer#getContainerId(nextapp.echo2.app.Component)
*/
public String getContainerId(Component child) {
return ContainerInstance.getElementId(child.getParent());
}
/**
* @see nextapp.echo2.webcontainer.ComponentSynchronizePeer#renderAdd(nextapp.echo2.webcontainer.RenderContext,
* nextapp.echo2.app.update.ServerComponentUpdate, java.lang.String,
* nextapp.echo2.app.Component)
*/
public void renderAdd(RenderContext rc, ServerComponentUpdate update, String targetId, Component component) {
Element domAddElement = DomUpdate.renderElementAdd(rc.getServerMessage());
DocumentFragment htmlFragment = rc.getServerMessage().getDocument().createDocumentFragment();
renderHtml(rc, update, htmlFragment, component);
DomUpdate.renderElementAddContent(rc.getServerMessage(), domAddElement, targetId, htmlFragment);
}
/**
* @see nextapp.echo2.webcontainer.ComponentSynchronizePeer#renderDispose(nextapp.echo2.webcontainer.RenderContext,
* nextapp.echo2.app.update.ServerComponentUpdate,
* nextapp.echo2.app.Component)
*/
public void renderDispose(RenderContext rc, ServerComponentUpdate update, Component component) {
// Do nothing.
}
/**
* @see nextapp.echo2.webcontainer.DomUpdateSupport#renderHtml(nextapp.echo2.webcontainer.RenderContext,
* nextapp.echo2.app.update.ServerComponentUpdate, org.w3c.dom.Node,
* nextapp.echo2.app.Component)
*/
public void renderHtml(RenderContext rc, ServerComponentUpdate update, Node parentNode, Component component) {
Document document = parentNode.getOwnerDocument();
Element divElement = document.createElement("div");
divElement.setAttribute("id", ContainerInstance.getElementId(component));
parentNode.appendChild(divElement);
if (component.getVisibleComponentCount() == 0) {
// Return if no children (don't even bother to render CSS style)
return;
}
CssStyle cssStyle = new CssStyle();
ColorRender.renderToStyle(cssStyle, component);
FontRender.renderToStyle(cssStyle, component);
if (component instanceof Panel) {
BorderRender.renderToStyle(cssStyle, (Border) component.getRenderProperty(Panel.PROPERTY_BORDER));
InsetsRender.renderToStyle(cssStyle, "padding", (Insets) component.getRenderProperty(Panel.PROPERTY_INSETS));
}
if (cssStyle.hasAttributes()) {
divElement.setAttribute("style", cssStyle.renderInline());
}
Component child = component.getVisibleComponent(0);
ComponentSynchronizePeer syncPeer = SynchronizePeerFactory.getPeerForComponent(child.getClass());
if (syncPeer instanceof DomUpdateSupport) {
((DomUpdateSupport) syncPeer).renderHtml(rc, update, divElement, child);
} else {
syncPeer.renderAdd(rc, update, getContainerId(child), child);
}
}
/**
* @see nextapp.echo2.webcontainer.ComponentSynchronizePeer#renderUpdate(nextapp.echo2.webcontainer.RenderContext,
* nextapp.echo2.app.update.ServerComponentUpdate, java.lang.String)
*/
public boolean renderUpdate(RenderContext rc, ServerComponentUpdate update, String targetId) {
String parentId = ContainerInstance.getElementId(update.getParent());
DomUpdate.renderElementRemove(rc.getServerMessage(), parentId);
renderAdd(rc, update, targetId, update.getParent());
return true;
}
}