| // Copyright 2010 The Closure Library Authors. All Rights Reserved. |
| // |
| // 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. |
| |
| /** |
| * @fileoverview An alternative imageless button renderer that uses CSS3 rather |
| * than voodoo to render custom buttons with rounded corners and dimensionality |
| * (via a subtle flat shadow on the bottom half of the button) without the use |
| * of images. |
| * |
| * Based on the Custom Buttons 3.1 visual specification, see |
| * http://go/custombuttons |
| * |
| * Tested and verified to work in Gecko 1.9.2+ and WebKit 528+. |
| * |
| * @author eae@google.com (Emil A Eklund) |
| * @see ../demos/css3button.html |
| */ |
| |
| goog.provide('goog.ui.Css3ButtonRenderer'); |
| |
| goog.require('goog.asserts'); |
| goog.require('goog.dom.TagName'); |
| goog.require('goog.dom.classlist'); |
| goog.require('goog.ui.Button'); |
| goog.require('goog.ui.ButtonRenderer'); |
| goog.require('goog.ui.Component'); |
| goog.require('goog.ui.INLINE_BLOCK_CLASSNAME'); |
| goog.require('goog.ui.registry'); |
| |
| |
| |
| /** |
| * Custom renderer for {@link goog.ui.Button}s. Css3 buttons can contain |
| * almost arbitrary HTML content, will flow like inline elements, but can be |
| * styled like block-level elements. |
| * |
| * @constructor |
| * @extends {goog.ui.ButtonRenderer} |
| * @final |
| */ |
| goog.ui.Css3ButtonRenderer = function() { |
| goog.ui.ButtonRenderer.call(this); |
| }; |
| goog.inherits(goog.ui.Css3ButtonRenderer, goog.ui.ButtonRenderer); |
| |
| |
| /** |
| * The singleton instance of this renderer class. |
| * @type {goog.ui.Css3ButtonRenderer?} |
| * @private |
| */ |
| goog.ui.Css3ButtonRenderer.instance_ = null; |
| goog.addSingletonGetter(goog.ui.Css3ButtonRenderer); |
| |
| |
| /** |
| * Default CSS class to be applied to the root element of components rendered |
| * by this renderer. |
| * @type {string} |
| */ |
| goog.ui.Css3ButtonRenderer.CSS_CLASS = goog.getCssName('goog-css3-button'); |
| |
| |
| /** @override */ |
| goog.ui.Css3ButtonRenderer.prototype.getContentElement = function(element) { |
| return /** @type {Element} */ (element); |
| }; |
| |
| |
| /** |
| * Returns the button's contents wrapped in the following DOM structure: |
| * <div class="goog-inline-block goog-css3-button"> |
| * Contents... |
| * </div> |
| * Overrides {@link goog.ui.ButtonRenderer#createDom}. |
| * @param {goog.ui.Control} control goog.ui.Button to render. |
| * @return {!Element} Root element for the button. |
| * @override |
| */ |
| goog.ui.Css3ButtonRenderer.prototype.createDom = function(control) { |
| var button = /** @type {goog.ui.Button} */ (control); |
| var classNames = this.getClassNames(button); |
| var attr = { |
| 'class': goog.ui.INLINE_BLOCK_CLASSNAME + ' ' + classNames.join(' '), |
| 'title': button.getTooltip() || '' |
| }; |
| return button.getDomHelper().createDom('div', attr, button.getContent()); |
| }; |
| |
| |
| /** |
| * Returns true if this renderer can decorate the element. Overrides |
| * {@link goog.ui.ButtonRenderer#canDecorate} by returning true if the |
| * element is a DIV, false otherwise. |
| * @param {Element} element Element to decorate. |
| * @return {boolean} Whether the renderer can decorate the element. |
| * @override |
| */ |
| goog.ui.Css3ButtonRenderer.prototype.canDecorate = function(element) { |
| return element.tagName == goog.dom.TagName.DIV; |
| }; |
| |
| |
| /** @override */ |
| goog.ui.Css3ButtonRenderer.prototype.decorate = function(button, element) { |
| goog.asserts.assert(element); |
| goog.dom.classlist.addAll(element, |
| [goog.ui.INLINE_BLOCK_CLASSNAME, this.getCssClass()]); |
| return goog.ui.Css3ButtonRenderer.superClass_.decorate.call(this, button, |
| element); |
| }; |
| |
| |
| /** |
| * Returns the CSS class to be applied to the root element of components |
| * rendered using this renderer. |
| * @return {string} Renderer-specific CSS class. |
| * @override |
| */ |
| goog.ui.Css3ButtonRenderer.prototype.getCssClass = function() { |
| return goog.ui.Css3ButtonRenderer.CSS_CLASS; |
| }; |
| |
| |
| // Register a decorator factory function for goog.ui.Css3ButtonRenderer. |
| goog.ui.registry.setDecoratorByClassName( |
| goog.ui.Css3ButtonRenderer.CSS_CLASS, |
| function() { |
| return new goog.ui.Button(null, |
| goog.ui.Css3ButtonRenderer.getInstance()); |
| }); |
| |
| |
| // Register a decorator factory function for toggle buttons using the |
| // goog.ui.Css3ButtonRenderer. |
| goog.ui.registry.setDecoratorByClassName( |
| goog.getCssName('goog-css3-toggle-button'), |
| function() { |
| var button = new goog.ui.Button(null, |
| goog.ui.Css3ButtonRenderer.getInstance()); |
| button.setSupportedState(goog.ui.Component.State.CHECKED, true); |
| return button; |
| }); |