/*
* Copyright (c) 2002-2010 Gargoyle Software Inc.
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.gargoylesoftware.htmlunit.javascript.host.html;
import static com.gargoylesoftware.htmlunit.html.HtmlImage.TAG_NAME;
import java.net.MalformedURLException;
import net.sourceforge.htmlunit.corejs.javascript.Context;
import org.apache.xalan.xsltc.runtime.AttributeList;
import com.gargoylesoftware.htmlunit.Page;
import com.gargoylesoftware.htmlunit.SgmlPage;
import com.gargoylesoftware.htmlunit.html.HTMLParser;
import com.gargoylesoftware.htmlunit.html.HtmlElement;
import com.gargoylesoftware.htmlunit.html.HtmlImage;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.gargoylesoftware.htmlunit.javascript.PostponedAction;
/**
* The JavaScript object that represents an "Image".
*
* @version $Revision: 5301 $
* @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
* @author <a href="mailto:george@murnock.com">George Murnock</a>
* @author Chris Erskine
* @author Marc Guillemot
* @author Ahmed Ashour
*/
public class HTMLImageElement extends HTMLElement {
private static final long serialVersionUID = 5630843390548382869L;
private boolean instantiatedViaJavaScript_ = false;
/**
* Creates an instance.
*/
public HTMLImageElement() {
// Empty.
}
/**
* JavaScript constructor. This must be declared in every JavaScript file because
* the Rhino engine won't walk up the hierarchy looking for constructors.
*/
public void jsConstructor() {
instantiatedViaJavaScript_ = true;
final SgmlPage page = (SgmlPage) getWindow().getWebWindow().getEnclosedPage();
final HtmlElement fake = HTMLParser.getFactory(TAG_NAME).createElement(page, TAG_NAME, new AttributeList());
setDomNode(fake);
}
/**
* Sets the <tt>src</tt> attribute.
* @param src the <tt>src</tt> attribute value
*/
public void jsxSet_src(final String src) {
final HtmlElement img = getDomNodeOrDie();
img.setAttribute("src", src);
getWindow().getWebWindow().getWebClient()
.getJavaScriptEngine().addPostponedAction(new ImageOnLoadAction(img.getPage()));
}
/**
* Returns the value of the <tt>src</tt> attribute.
* @return the value of the <tt>src</tt> attribute
*/
public String jsxGet_src() {
final HtmlImage img = (HtmlImage) getDomNodeOrDie();
final String src = img.getSrcAttribute();
if (instantiatedViaJavaScript_ && "".equals(src)) {
return src;
}
try {
final HtmlPage page = (HtmlPage) img.getPage();
return page.getFullyQualifiedUrl(src).toExternalForm();
}
catch (final MalformedURLException e) {
final String msg = "Unable to create fully qualified URL for src attribute of image " + e.getMessage();
throw Context.reportRuntimeError(msg);
}
}
/**
* Sets the <tt>onload</tt> event handler for this element.
* @param onloadHandler the <tt>onload</tt> event handler for this element
*/
public void jsxSet_onload(final Object onloadHandler) {
setEventHandlerProp("onload", onloadHandler);
getWindow().getWebWindow().getWebClient()
.getJavaScriptEngine().addPostponedAction(new ImageOnLoadAction(getDomNodeOrDie().getPage()));
}
/**
* Returns the <tt>onload</tt> event handler for this element.
* @return the <tt>onload</tt> event handler for this element
*/
public Object jsxGet_onload() {
return getEventHandlerProp("onload");
}
/**
* Custom JavaScript postponed action which downloads the image and invokes the onload handler, if necessary.
*/
private class ImageOnLoadAction extends PostponedAction {
public ImageOnLoadAction(final Page page) {
super(page);
}
@Override
public void execute() throws Exception {
final HtmlImage img = (HtmlImage) getDomNodeOrNull();
if (img != null) {
img.doOnLoad();
}
}
}
/**
* Returns the value of the "alt" property.
* @return the value of the "alt" property
*/
public String jsxGet_alt() {
String alt = getDomNodeOrDie().getAttribute("alt");
if (alt == NOT_FOUND) {
alt = "";
}
return alt;
}
/**
* Returns the value of the "alt" property.
* @param alt the value
*/
public void jsxSet_alt(final String alt) {
getDomNodeOrDie().setAttribute("alt", alt);
}
/**
* Gets the "border" attribute.
* @return the "border" attribute
*/
public String jsxGet_border() {
String border = getDomNodeOrDie().getAttribute("border");
if (border == NOT_FOUND) {
border = "";
}
return border;
}
/**
* Sets the "border" attribute.
* @param border the "border" attribute
*/
public void jsxSet_border(final String border) {
getDomNodeOrDie().setAttribute("border", border);
}
/**
* Returns the value of the "align" property.
* @return the value of the "align" property
*/
public String jsxGet_align() {
return getAlign(true);
}
/**
* Sets the value of the "align" property.
* @param align the value of the "align" property
*/
public void jsxSet_align(final String align) {
setAlign(align, false);
}
/**
* Returns the value of the "width" property.
* @return the value of the "width" property
*/
public int jsxGet_width() {
final HtmlImage img = (HtmlImage) getDomNodeOrDie();
final String width = img.getWidthAttribute();
try {
return Integer.parseInt(width);
}
catch (final NumberFormatException e) {
return 24; // anything else
}
}
/**
* Sets the value of the "width" property.
* @param width the value of the "width" property
*/
public void jsxSet_width(final String width) {
getDomNodeOrDie().setAttribute("width", width);
}
/**
* Returns the value of the "height" property.
* @return the value of the "height" property
*/
public int jsxGet_height() {
final HtmlImage img = (HtmlImage) getDomNodeOrDie();
final String height = img.getHeightAttribute();
try {
return Integer.parseInt(height);
}
catch (final NumberFormatException e) {
return 24; // anything else
}
}
/**
* Sets the value of the "height" property.
* @param height the value of the "height" property
*/
public void jsxSet_height(final String height) {
getDomNodeOrDie().setAttribute("height", height);
}
}