/*
* 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 nextapp.echo2.app.Alignment;
import nextapp.echo2.app.Color;
import nextapp.echo2.app.Component;
import nextapp.echo2.app.Extent;
import nextapp.echo2.app.Font;
import nextapp.echo2.app.ImageReference;
import nextapp.echo2.app.Label;
import nextapp.echo2.app.update.ServerComponentUpdate;
import nextapp.echo2.webcontainer.ContainerInstance;
import nextapp.echo2.webcontainer.DomUpdateSupport;
import nextapp.echo2.webcontainer.RenderContext;
import nextapp.echo2.webcontainer.ComponentSynchronizePeer;
import nextapp.echo2.webcontainer.image.ImageRenderSupport;
import nextapp.echo2.webcontainer.propertyrender.AlignmentRender;
import nextapp.echo2.webcontainer.propertyrender.ColorRender;
import nextapp.echo2.webcontainer.propertyrender.FontRender;
import nextapp.echo2.webcontainer.propertyrender.ImageReferenceRender;
import nextapp.echo2.webcontainer.propertyrender.LayoutDirectionRender;
import nextapp.echo2.webrender.output.CssStyle;
import nextapp.echo2.webrender.servermessage.DomUpdate;
import nextapp.echo2.webrender.util.DomUtil;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
/**
* Synchronization peer for <code>nextapp.echo2.app.Label</code> components.
* <p>
* This class should not be extended or used by classes outside of the
* Echo framework.
*/
public class LabelPeer
implements DomUpdateSupport, ImageRenderSupport, ComponentSynchronizePeer {
private static final Alignment DEFAULT_TEXT_POSITION = new Alignment(Alignment.TRAILING, Alignment.DEFAULT);
private static final Extent DEFAULT_ICON_TEXT_MARGIN = new Extent(3);
private static final String IMAGE_ID_ICON = "icon";
/**
* @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#getContainerId(nextapp.echo2.app.Component)
*/
public String getContainerId(Component child) {
throw new UnsupportedOperationException("Component does not support children.");
}
/**
* @see nextapp.echo2.webcontainer.image.ImageRenderSupport#getImage(nextapp.echo2.app.Component, java.lang.String)
*/
public ImageReference getImage(Component component, String imageId) {
if (IMAGE_ID_ICON.equals(imageId)) {
return (ImageReference) component.getRenderProperty(Label.PROPERTY_ICON);
} else {
return null;
}
}
/**
* @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) {
Label label = (Label) component;
ImageReference icon = (ImageReference) label.getRenderProperty(Label.PROPERTY_ICON);
String text = (String) label.getRenderProperty(Label.PROPERTY_TEXT);
if (icon != null) {
if (text != null) {
renderIconTextLabel(rc, parentNode, label);
} else {
renderIconLabel(rc, parentNode, label);
}
} else if (text != null) {
renderTextLabel(rc, parentNode, label);
}
}
/**
* Renders a label containing only an icon.
*
* @param rc the relevant <code>RenderContext</code>
* @param parentNode the parent node
* @param label the <code>Label</code>
*/
private void renderIconLabel(RenderContext rc, Node parentNode, Label label) {
Element imgElement = ImageReferenceRender.renderImageReferenceElement(rc, this, label, IMAGE_ID_ICON);
imgElement.setAttribute("id", ContainerInstance.getElementId(label));
imgElement.setAttribute("style", "border:0px none;");
String toolTipText = (String) label.getRenderProperty(Label.PROPERTY_TOOL_TIP_TEXT);
if (toolTipText != null) {
imgElement.setAttribute("title", toolTipText);
}
parentNode.appendChild(imgElement);
}
/**
* Renders a label containing both an icon and text.
*
* @param rc the relevant <code>RenderContext</code>
* @param parentNode the parent node
* @param label the <code>Label</code>
*/
private void renderIconTextLabel(RenderContext rc, Node parentNode, Label label) {
// TriCellTable rendering note:
// Cell 0 = Text
// Cell 1 = Icon
Document document = rc.getServerMessage().getDocument();
String text = (String) label.getRenderProperty(Label.PROPERTY_TEXT);
Alignment textPosition = (Alignment) label.getRenderProperty(Label.PROPERTY_TEXT_POSITION, DEFAULT_TEXT_POSITION);
Extent iconTextMargin = (Extent) label.getRenderProperty(Label.PROPERTY_ICON_TEXT_MARGIN,
DEFAULT_ICON_TEXT_MARGIN);
String elementId = ContainerInstance.getElementId(label);
int orientation = TriCellTableConfigurator.convertIconTextPositionToOrientation(textPosition, label);
TriCellTable tct = new TriCellTable(rc, document, elementId, orientation, iconTextMargin);
tct.addCellCssText("padding:0px;");
Element textTdElement = tct.getTdElement(0);
CssStyle textTdCssStyle = new CssStyle();
textTdCssStyle.setAttribute("border", "0px none");
if (Boolean.FALSE.equals(label.getRenderProperty(Label.PROPERTY_LINE_WRAP))) {
textTdCssStyle.setAttribute("white-space", "nowrap");
}
AlignmentRender.renderToStyle(textTdCssStyle, (Alignment) label.getRenderProperty(Label.PROPERTY_TEXT_ALIGNMENT), label);
textTdElement.setAttribute("style", textTdElement.getAttribute("style") + textTdCssStyle.renderInline());
DomUtil.setElementText(textTdElement, text);
Element imgElement = ImageReferenceRender.renderImageReferenceElement(rc, this, label, IMAGE_ID_ICON);
Element iconTdElement = tct.getTdElement(1);
iconTdElement.appendChild(imgElement);
Element tableElement = tct.getTableElement();
tableElement.setAttribute("id", elementId);
String toolTipText = (String) label.getRenderProperty(Label.PROPERTY_TOOL_TIP_TEXT);
if (toolTipText != null) {
tableElement.setAttribute("title", toolTipText);
}
CssStyle cssStyle = new CssStyle();
LayoutDirectionRender.renderToStyle(cssStyle, label.getLayoutDirection(), label.getLocale());
ColorRender.renderToStyle(cssStyle, (Color) label.getRenderProperty(Label.PROPERTY_FOREGROUND),
(Color) label.getRenderProperty(Label.PROPERTY_BACKGROUND));
FontRender.renderToStyle(cssStyle, (Font) label.getRenderProperty(Label.PROPERTY_FONT));
cssStyle.setAttribute("border", "0px none");
cssStyle.setAttribute("border-collapse", "collapse");
tableElement.setAttribute("style", cssStyle.renderInline());
parentNode.appendChild(tableElement);
}
/**
* Renders a label containing only text
*
* @param rc the relevant <code>RenderContext</code>
* @param parentNode the parent node
* @param label the <code>Label</code>
*/
private void renderTextLabel(RenderContext rc, Node parentNode, Label label) {
Document document = rc.getServerMessage().getDocument();
Element spanElement = document.createElement("span");
spanElement.setAttribute("id", ContainerInstance.getElementId(label));
DomUtil.setElementText(spanElement, (String) label.getRenderProperty(Label.PROPERTY_TEXT));
CssStyle cssStyle = new CssStyle();
if (Boolean.FALSE.equals(label.getRenderProperty(Label.PROPERTY_LINE_WRAP))) {
cssStyle.setAttribute("white-space", "nowrap");
}
ColorRender.renderToStyle(cssStyle, (Color) label.getRenderProperty(Label.PROPERTY_FOREGROUND),
(Color) label.getRenderProperty(Label.PROPERTY_BACKGROUND));
FontRender.renderToStyle(cssStyle, (Font) label.getRenderProperty(Label.PROPERTY_FONT));
if (cssStyle.hasAttributes()) {
spanElement.setAttribute("style", cssStyle.renderInline());
}
String toolTipText = (String) label.getRenderProperty(Label.PROPERTY_TOOL_TIP_TEXT);
if (toolTipText != null) {
spanElement.setAttribute("title", toolTipText);
}
parentNode.appendChild(spanElement);
}
/**
* @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) {
DomUpdate.renderElementRemove(rc.getServerMessage(), ContainerInstance.getElementId(update.getParent()));
renderAdd(rc, update, targetId, update.getParent());
return false;
}
}