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; /** * Push button. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/interact/forms.html#edef-BUTTON"> * W3C HTML Specification</a> */ @TagName(ButtonElement.TAG) public class ButtonElement extends Element { public static final String TAG = "button"; /** * Assert that the given {@link Element} is compatible with this class and * automatically typecast it. */ public static ButtonElement as(Element elem) { assert is(elem); return (ButtonElement) 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 ButtonElement() { } /** * Simulate a mouse-click. */ public final void click() { DOMImpl.impl.buttonClick(this); } /** * A single character access key to give access to the form control. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/interact/forms.html#adef-accesskey"> * W3C HTML Specification</a> */ public String getAccessKey() { return this.getPropertyString("accessKey"); } /** * The control is unavailable in this context. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/interact/forms.html#adef-disabled"> * W3C HTML Specification</a> * @deprecated use {@link #isDisabled()} instead. */ @Deprecated public String getDisabled() { return this.getPropertyString("disabled"); } /** * 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(); } /** * 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-BUTTON"> * W3C HTML Specification</a> */ public String getName() { return this.getPropertyString("name"); } /** * The type of button (all lower case). * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/interact/forms.html#adef-type-BUTTON"> * W3C HTML Specification</a> */ public String getType() { return this.getPropertyString("type"); } /** * The current form control value. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/interact/forms.html#adef-value-BUTTON"> * W3C HTML Specification</a> */ public String getValue() { return this.getPropertyString("value"); } /** * The control is unavailable in this context. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/interact/forms.html#adef-disabled"> * W3C HTML Specification</a> */ public boolean isDisabled() { return this.getPropertyBoolean("disabled"); } /** * A single character access key to give access to the form control. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/interact/forms.html#adef-accesskey"> * W3C HTML Specification</a> */ public void setAccessKey(String accessKey) { this.setPropertyString("accessKey", accessKey); } /** * The control is unavailable in this context. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/interact/forms.html#adef-disabled"> * W3C HTML Specification</a> */ public void setDisabled(boolean disabled) { this.setPropertyBoolean("disabled", disabled); } /** * The control is unavailable in this context. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/interact/forms.html#adef-disabled"> * W3C HTML Specification</a> * @deprecated use {@link #setDisabled(boolean)} instead */ @Deprecated public void setDisabled(String disabled) { this.setPropertyString("disabled", disabled); } /** * 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-BUTTON"> * W3C HTML Specification</a> */ public void setName(String name) { this.setPropertyString("name", name); } @Override public void setPropertyBoolean(String name, boolean value) { ensureRemoteCheck(); if (name.equals("disabled") && !Boolean.valueOf(value)) { local().removeAttribute(name); } else { local().setPropertyBoolean(name, value); } remote().setPropertyBoolean(name, value); } /** * The current form control value. * * @see <a href= * "http://www.w3.org/TR/1999/REC-html401-19991224/interact/forms.html#adef-value-BUTTON"> * W3C HTML Specification</a> */ public void setValue(String value) { this.setPropertyString("value", value); } }