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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.echo.app.serial.property;
import org.w3c.dom.Element;
import nextapp.echo.app.Extent;
import nextapp.echo.app.FillImage;
import nextapp.echo.app.HttpImageReference;
import nextapp.echo.app.ImageReference;
import nextapp.echo.app.ResourceImageReference;
import nextapp.echo.app.serial.PropertyPeerFactory;
import nextapp.echo.app.serial.SerialContext;
import nextapp.echo.app.serial.SerialException;
import nextapp.echo.app.serial.SerialPropertyPeer;
import nextapp.echo.app.util.ConstantMap;
import nextapp.echo.app.util.Context;
import nextapp.echo.app.util.DomUtil;
/**
* SerialPropertyPeer for FillImage properties.
*/
public class FillImagePeer
implements SerialPropertyPeer {
private static final ConstantMap REPEAT_CONSTANTS = new ConstantMap();
static {
REPEAT_CONSTANTS.add(FillImage.NO_REPEAT, "0");
REPEAT_CONSTANTS.add(FillImage.REPEAT_HORIZONTAL, "x");
REPEAT_CONSTANTS.add(FillImage.REPEAT_VERTICAL, "y");
REPEAT_CONSTANTS.add(FillImage.REPEAT, "xy");
}
/**
* Generates a <fi> DOM element representing a fill image.
* This method is used internally and for FillImageBorder serialization.
*
* @param context a Context object which provides a
* SerialContext and PropertyPeerFactory
* @param fillImage the FillImage to render
* @return a generated <fi> element representing the fill image
* @throws SerialException
*/
public Element toElement(Context context, FillImage fillImage)
throws SerialException {
SerialContext serialContext = (SerialContext) context.get(SerialContext.class);
Element fiElement = serialContext.getDocument().createElement("fi");
ImageReference imageReference = fillImage.getImage();
PropertyPeerFactory propertyPeerFactory = (PropertyPeerFactory) context.get(PropertyPeerFactory.class);
SerialPropertyPeer propertyPeer = propertyPeerFactory.getPeerForProperty(imageReference.getClass());
if (propertyPeer == null) {
throw new IllegalArgumentException("Image peer not found for container image");
} else if (!(propertyPeer instanceof ImageReferencePeer)) {
throw new IllegalArgumentException("Property peer for contained image is not an ImageReferencePeer");
}
ImageReferencePeer imagePeer = (ImageReferencePeer) propertyPeer ;
fiElement.setAttribute("u", imagePeer.getImageUrl(context, imageReference));
Extent offsetX = fillImage.getHorizontalOffset();
if (offsetX != null) {
fiElement.setAttribute("x", ExtentPeer.toString(offsetX));
}
Extent offsetY = fillImage.getVerticalOffset();
if (offsetY != null) {
fiElement.setAttribute("y", ExtentPeer.toString(offsetY));
}
fiElement.setAttribute("r", REPEAT_CONSTANTS.get(fillImage.getRepeat()));
return fiElement;
}
/**
* Generates a FillImage based on a <fi> DOM element.
* This method is used internally and for FillImageBorder serialization.
*
* @param context a Context object which provides a
* SerialContext and PropertyPeerFactory
* @param fiElement the <fi> element to parse
* @return a FillImage representation of the element
* @throws SerialException
*/
public FillImage fromElement(Context context, Element fiElement)
throws SerialException {
String imageType = fiElement.getAttribute("t");
PropertyPeerFactory propertyPeerFactory = (PropertyPeerFactory) context.get(PropertyPeerFactory.class);
SerialPropertyPeer imagePropertyPeer = null;
if ("r".equals(imageType)) {
imagePropertyPeer = propertyPeerFactory.getPeerForProperty(ResourceImageReference.class);
} else if ("h".equals(imageType)) {
imagePropertyPeer = propertyPeerFactory.getPeerForProperty(HttpImageReference.class);
} else if (imageType != null) {
SerialContext serialContext = (SerialContext) context.get(SerialContext.class);
try {
imagePropertyPeer = propertyPeerFactory.getPeerForProperty(serialContext.getClassLoader().loadClass(imageType));
} catch (ClassNotFoundException ex) {
throw new SerialException("Object class not found.", ex);
}
} else {
throw new RuntimeException("No image type specified");
}
if (imagePropertyPeer == null) {
throw new RuntimeException("Unknown image type: " + imageType);
}
ImageReference imageReference = (ImageReference) imagePropertyPeer.toProperty(context, FillImage.class, fiElement);
int repeat = REPEAT_CONSTANTS.get(fiElement.getAttribute("r"), FillImage.REPEAT);
Extent x = fiElement.hasAttribute("x") ? ExtentPeer.fromString(fiElement.getAttribute("x") ) : null;
Extent y = fiElement.hasAttribute("y") ? ExtentPeer.fromString(fiElement.getAttribute("y") ) : null;
return new FillImage(imageReference, x, y, repeat);
}
/**
* @see nextapp.echo.app.serial.SerialPropertyPeer#toProperty(nextapp.echo.app.util.Context,
* java.lang.Class, org.w3c.dom.Element)
*/
public Object toProperty(Context context, Class objectClass, Element propertyElement)
throws SerialException {
Element fiElement = DomUtil.getChildElementByTagName(propertyElement, "fi");
return fromElement(context, fiElement);
}
/**
* @see nextapp.echo.app.serial.SerialPropertyPeer#toXml(nextapp.echo.app.util.Context,
* java.lang.Class, org.w3c.dom.Element, java.lang.Object)
*/
public void toXml(Context context, Class objectClass, Element propertyElement, Object propertyValue)
throws SerialException {
SerialContext serialContext = (SerialContext) context.get(SerialContext.class);
FillImage fillImage = (FillImage) propertyValue;
propertyElement.setAttribute("t",
(serialContext.getFlags() & SerialContext.FLAG_RENDER_SHORT_NAMES) == 0 ? "FillImage" : "FI");
propertyElement.appendChild(toElement(context, fillImage));
}
}
