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.annotations.IsTrustedResourceUri; /** * The LINK element specifies a link to an external resource, and defines this * document's relationship to that resource (or vice versa). * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/links.html#edef-LINK"> * W3C HTML Specification</a> */ @TagName(LinkElement.TAG) public class LinkElement extends Element { public static final String TAG = "link"; /** * Assert that the given {@link Element} is compatible with this class and * automatically typecast it. */ public static LinkElement as(Element elem) { assert is(elem); return (LinkElement) 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 LinkElement() { } /** * Enables/disables the link. This is currently only used for style sheet * links, and may be used to activate or deactivate style sheets. * * @deprecated use {@link #isDisabled()} instead. */ @Deprecated public boolean getDisabled() { throw new FixmeUnsupportedOperationException(); } /** * The URI of the linked resource. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/links.html#adef-href"> * W3C HTML Specification</a> */ public String getHref() { return this.getPropertyString("href"); } /** * Language code of the linked resource. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/links.html#adef-hreflang"> * W3C HTML Specification</a> */ public String getHreflang() { return this.getPropertyString("hreflang"); } /** * Designed for use with one or more target media. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/present/styles.html#adef-media"> * W3C HTML Specification</a> */ public String getMedia() { return this.getPropertyString("media"); } /** * Forward link type. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/links.html#adef-rel"> * W3C HTML Specification</a> */ public String getRel() { return this.getPropertyString("rel"); } /** * Frame to render the resource in. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/present/frames.html#adef-target"> * W3C HTML Specification</a> */ public String getTarget() { return this.getPropertyString("target"); } /** * Advisory content type. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/links.html#adef-type-A"> * W3C HTML Specification</a> */ public String getType() { return this.getPropertyString("type"); } /** * Enables/disables the link. This is currently only used for style sheet * links, and may be used to activate or deactivate style sheets. */ public boolean isDisabled() { return this.getPropertyBoolean("disabled"); } /** * Enables/disables the link. This is currently only used for style sheet * links, and may be used to activate or deactivate style sheets. */ public void setDisabled(boolean disabled) { this.setPropertyBoolean("disabled", disabled); } /** * The URI of the linked resource. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/links.html#adef-href"> * W3C HTML Specification</a> */ public void setHref(@IsTrustedResourceUri String href) { this.setPropertyString("href", href); } /** * Language code of the linked resource. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/links.html#adef-hreflang"> * W3C HTML Specification</a> */ public void setHreflang(String hreflang) { this.setPropertyString("hreflang", hreflang); } /** * Designed for use with one or more target media. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/present/styles.html#adef-media"> * W3C HTML Specification</a> */ public void setMedia(String media) { this.setPropertyString("media", media); } /** * Forward link type. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/links.html#adef-rel"> * W3C HTML Specification</a> */ public void setRel(String rel) { this.setPropertyString("rel", rel); } /** * Frame to render the resource in. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/present/frames.html#adef-target"> * W3C HTML Specification</a> */ public void setTarget(String target) { this.setPropertyString("target", target); } /** * Advisory content type. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/struct/links.html#adef-type-A"> * W3C HTML Specification</a> */ public void setType(String type) { this.setPropertyString("type", type); } }