Java tutorial
/* * Copyright 2008 Google 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.google.gwt.dom.client; import com.google.gwt.core.client.JavaScriptObject; import com.google.gwt.safehtml.shared.SafeUri; import com.google.gwt.safehtml.shared.annotations.IsTrustedResourceUri; import com.google.gwt.safehtml.shared.annotations.SuppressIsTrustedResourceUriCastCheck; /** * Generic embedded object. * * Note: In principle, all properties on the object element are read-write but * in some environments some properties may be read-only once the underlying * object is instantiated. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/objects.html#edef-OBJECT"> * W3C HTML Specification</a> */ @TagName(ObjectElement.TAG) public class ObjectElement extends Element { public static final String TAG = "object"; /** * Assert that the given {@link Element} is compatible with this class and * automatically typecast it. */ public static ObjectElement as(Element elem) { assert is(elem); return (ObjectElement) elem; } /** * Determine whether the given {@link Element} can be cast to this class. A * <code>null</code> node will cause this method to return * <code>false</code>. */ public static boolean is(Element elem) { return elem != null && elem.hasTagName(TAG); } /** * Determines whether the given {@link JavaScriptObject} can be cast to this * class. A <code>null</code> object will cause this method to return * <code>false</code>. */ public static boolean is(JavaScriptObject o) { if (Element.is(o)) { return is(Element.as(o)); } return false; } /** * Determine whether the given {@link Node} can be cast to this class. A * <code>null</code> node will cause this method to return * <code>false</code>. */ public static boolean is(Node node) { if (Element.is(node)) { return is((Element) node); } return false; } protected ObjectElement() { } /** * Applet class file. */ public String getCode() { return this.getPropertyString("code"); } /** * The document this object contains, if there is any and it is available, * or null otherwise. */ public Document getContentDocument() { throw new FixmeUnsupportedOperationException(); } /** * A URI specifying the location of the object's data. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/objects.html#adef-data"> * W3C HTML Specification</a> */ public String getData() { return this.getPropertyString("data"); } /** * Returns the FORM element containing this control. Returns null if this * control is not within the context of a form. */ public FormElement getForm() { throw new FixmeUnsupportedOperationException(); } /** * Override height. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/objects.html#adef-height-IMG"> * W3C HTML Specification</a> */ public String getHeight() { return this.getPropertyString("height"); } /** * Form control or object name when submitted with a form. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/interact/forms.html#adef-name-INPUT"> * W3C HTML Specification</a> */ public String getName() { return this.getPropertyString("name"); } /** * Content type for data downloaded via data attribute. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/objects.html#adef-type-OBJECT"> * W3C HTML Specification</a> */ public String getType() { return this.getPropertyString("type"); } /** * Override width. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/objects.html#adef-width-IMG"> * W3C HTML Specification</a> */ public String getWidth() { return this.getPropertyString("width"); } /** * Applet class file. */ public void setCode(String code) { this.setPropertyString("code", code); } /** * A URI specifying the location of the object's data. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/objects.html#adef-data"> * W3C HTML Specification</a> */ @SuppressIsTrustedResourceUriCastCheck public final void setData(@IsTrustedResourceUri SafeUri data) { setData(data.asString()); } /** * A URI specifying the location of the object's data. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/objects.html#adef-data"> * W3C HTML Specification</a> */ public void setData(@IsTrustedResourceUri String data) { this.setPropertyString("data", data); } /** * Override height. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/objects.html#adef-height-IMG"> * W3C HTML Specification</a> */ public void setHeight(String height) { this.setPropertyString("height", height); } /** * Form control or object name when submitted with a form. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/interact/forms.html#adef-name-INPUT"> * W3C HTML Specification</a> */ public void setName(String name) { this.setPropertyString("name", name); } /** * Content type for data downloaded via data attribute. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/objects.html#adef-type-OBJECT"> * W3C HTML Specification</a> */ public void setType(String type) { this.setPropertyString("type", type); } /** * Use client-side image map. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/objects.html#adef-usemap"> * W3C HTML Specification</a> */ public void setUseMap(boolean useMap) { this.setPropertyBoolean("useMap", useMap); } /** * Override width. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/objects.html#adef-width-IMG"> * W3C HTML Specification</a> */ public void setWidth(String width) { this.setPropertyString("width", width); } /** * Use client-side image map. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/objects.html#adef-usemap"> * W3C HTML Specification</a> */ public final boolean useMap() { return getPropertyBoolean("useMap"); } }