Adding float-no-zero branch hosted build
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ahocevar
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// Copyright 2011 The Closure Library Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS-IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* @fileoverview provides a reusable GoogleVideo UI component given a public
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* GoogleVideo video URL.
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*
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* goog.ui.media.GoogleVideo is actually a {@link goog.ui.ControlRenderer}, a
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* stateless class - that could/should be used as a Singleton with the static
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* method {@code goog.ui.media.GoogleVideo.getInstance} -, that knows how to
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* render GoogleVideo videos. It is designed to be used with a
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* {@link goog.ui.Control}, which will actually control the media renderer and
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* provide the {@link goog.ui.Component} base. This design guarantees that all
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* different types of medias will behave alike but will look different.
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*
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* goog.ui.media.GoogleVideo expects {@code goog.ui.media.GoogleVideoModel} on
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* {@code goog.ui.Control.getModel} as data models, and renders a flash object
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* that will show the contents of that video.
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*
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* Example of usage:
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*
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* <pre>
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* var video = goog.ui.media.GoogleVideoModel.newInstance(
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* 'http://video.google.com/videoplay?docid=6698933542780842398');
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* goog.ui.media.GoogleVideo.newControl(video).render();
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* </pre>
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*
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* GoogleVideo medias currently support the following states:
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*
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* <ul>
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* <li> {@link goog.ui.Component.State.DISABLED}: shows 'flash not available'
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* <li> {@link goog.ui.Component.State.HOVER}: mouse cursor is over the video
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* <li> {@link goog.ui.Component.State.SELECTED}: flash video is shown
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* </ul>
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*
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* Which can be accessed by
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* <pre>
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* video.setEnabled(true);
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* video.setHighlighted(true);
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* video.setSelected(true);
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* </pre>
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*
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*
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* @supported IE6+, FF2+, Chrome, Safari. Requires flash to actually work.
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*/
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goog.provide('goog.ui.media.GoogleVideo');
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goog.provide('goog.ui.media.GoogleVideoModel');
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goog.require('goog.string');
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goog.require('goog.ui.media.FlashObject');
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goog.require('goog.ui.media.Media');
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goog.require('goog.ui.media.MediaModel');
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goog.require('goog.ui.media.MediaRenderer');
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/**
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* Subclasses a goog.ui.media.MediaRenderer to provide a GoogleVideo specific
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* media renderer.
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*
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* This class knows how to parse GoogleVideo URLs, and render the DOM structure
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* of GoogleVideo video players. This class is meant to be used as a singleton
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* static stateless class, that takes {@code goog.ui.media.Media} instances and
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* renders it. It expects {@code goog.ui.media.Media.getModel} to return a well
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* formed, previously constructed, GoogleVideo video id, which is the data model
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* this renderer will use to construct the DOM structure.
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* {@see goog.ui.media.GoogleVideo.newControl} for a example of constructing a
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* control with this renderer.
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*
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* This design is patterned after http://go/closure_control_subclassing
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*
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* It uses {@link goog.ui.media.FlashObject} to embed the flash object.
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*
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* @constructor
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* @extends {goog.ui.media.MediaRenderer}
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*/
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goog.ui.media.GoogleVideo = function() {
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goog.ui.media.MediaRenderer.call(this);
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};
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goog.inherits(goog.ui.media.GoogleVideo, goog.ui.media.MediaRenderer);
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goog.addSingletonGetter(goog.ui.media.GoogleVideo);
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/**
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* A static convenient method to construct a goog.ui.media.Media control out of
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* a GoogleVideo model. It sets it as the data model goog.ui.media.GoogleVideo
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* renderer uses, sets the states supported by the renderer, and returns a
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* Control that binds everything together. This is what you should be using for
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* constructing GoogleVideo videos, except if you need finer control over the
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* configuration.
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*
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* @param {goog.ui.media.GoogleVideoModel} dataModel The GoogleVideo data model.
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* @param {goog.dom.DomHelper=} opt_domHelper Optional DOM helper, used for
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* document interaction.
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* @return {goog.ui.media.Media} A Control binded to the GoogleVideo renderer.
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*/
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goog.ui.media.GoogleVideo.newControl = function(dataModel, opt_domHelper) {
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var control = new goog.ui.media.Media(
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dataModel,
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goog.ui.media.GoogleVideo.getInstance(),
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opt_domHelper);
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// GoogleVideo videos don't have any thumbnail for now, so we show the
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// "selected" version of the UI at the start, which is the flash player.
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control.setSelected(true);
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return control;
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};
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/**
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* Default CSS class to be applied to the root element of components rendered
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* by this renderer.
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*
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* @type {string}
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*/
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goog.ui.media.GoogleVideo.CSS_CLASS =
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goog.getCssName('goog-ui-media-googlevideo');
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/**
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* Creates the initial DOM structure of the GoogleVideo video, which is
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* basically a the flash object pointing to a GoogleVideo video player.
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*
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* @param {goog.ui.Control} c The media control.
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* @return {Element} The DOM structure that represents this control.
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* @override
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*/
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goog.ui.media.GoogleVideo.prototype.createDom = function(c) {
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var control = /** @type {goog.ui.media.Media} */ (c);
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var div = goog.base(this, 'createDom', control);
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var dataModel =
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/** @type {goog.ui.media.GoogleVideoModel} */ (control.getDataModel());
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var flash = new goog.ui.media.FlashObject(
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dataModel.getPlayer().getUrl() || '',
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control.getDomHelper());
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flash.render(div);
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return div;
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};
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/**
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* Returns the CSS class to be applied to the root element of components
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* rendered using this renderer.
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*
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* @return {string} Renderer-specific CSS class.
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* @override
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*/
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goog.ui.media.GoogleVideo.prototype.getCssClass = function() {
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return goog.ui.media.GoogleVideo.CSS_CLASS;
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};
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/**
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* The {@code goog.ui.media.GoogleVideo} media data model. It stores a required
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* {@code videoId} field, sets the GoogleVideo URL, and allows a few optional
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* parameters.
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*
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* @param {string} videoId The GoogleVideo video id.
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* @param {string=} opt_caption An optional caption of the GoogleVideo video.
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* @param {string=} opt_description An optional description of the GoogleVideo
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* video.
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* @param {boolean=} opt_autoplay Whether to autoplay video.
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* @constructor
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* @extends {goog.ui.media.MediaModel}
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*/
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goog.ui.media.GoogleVideoModel = function(videoId, opt_caption, opt_description,
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opt_autoplay) {
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goog.ui.media.MediaModel.call(
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this,
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goog.ui.media.GoogleVideoModel.buildUrl(videoId),
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opt_caption,
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opt_description,
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goog.ui.media.MediaModel.MimeType.FLASH);
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/**
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* The GoogleVideo video id.
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* @type {string}
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* @private
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*/
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this.videoId_ = videoId;
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this.setPlayer(new goog.ui.media.MediaModel.Player(
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goog.ui.media.GoogleVideoModel.buildFlashUrl(videoId, opt_autoplay)));
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};
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goog.inherits(goog.ui.media.GoogleVideoModel, goog.ui.media.MediaModel);
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/**
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* Regular expression used to extract the GoogleVideo video id (docid) out of
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* GoogleVideo URLs.
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*
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* @type {RegExp}
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* @private
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* @const
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*/
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goog.ui.media.GoogleVideoModel.MATCHER_ =
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/^http:\/\/(?:www\.)?video\.google\.com\/videoplay.*[\?#]docid=(-?[0-9]+)#?$/i;
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/**
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* A auxiliary static method that parses a GoogleVideo URL, extracting the ID of
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* the video, and builds a GoogleVideoModel.
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*
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* @param {string} googleVideoUrl A GoogleVideo video URL.
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* @param {string=} opt_caption An optional caption of the GoogleVideo video.
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* @param {string=} opt_description An optional description of the GoogleVideo
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* video.
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* @param {boolean=} opt_autoplay Whether to autoplay video.
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* @return {goog.ui.media.GoogleVideoModel} The data model that represents the
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* GoogleVideo URL.
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* @see goog.ui.media.GoogleVideoModel.getVideoId()
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* @throws Error in case the parsing fails.
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*/
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goog.ui.media.GoogleVideoModel.newInstance = function(googleVideoUrl,
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opt_caption,
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opt_description,
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opt_autoplay) {
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if (goog.ui.media.GoogleVideoModel.MATCHER_.test(googleVideoUrl)) {
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var data = goog.ui.media.GoogleVideoModel.MATCHER_.exec(googleVideoUrl);
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return new goog.ui.media.GoogleVideoModel(
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data[1], opt_caption, opt_description, opt_autoplay);
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}
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throw Error('failed to parse video id from GoogleVideo url: ' +
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googleVideoUrl);
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};
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/**
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* The opposite of {@code goog.ui.media.GoogleVideo.newInstance}: it takes a
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* videoId and returns a GoogleVideo URL.
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*
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* @param {string} videoId The GoogleVideo video ID.
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* @return {string} The GoogleVideo URL.
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*/
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goog.ui.media.GoogleVideoModel.buildUrl = function(videoId) {
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return 'http://video.google.com/videoplay?docid=' +
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goog.string.urlEncode(videoId);
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};
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/**
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* An auxiliary method that builds URL of the flash movie to be embedded,
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* out of the GoogleVideo video id.
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*
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* @param {string} videoId The GoogleVideo video ID.
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* @param {boolean=} opt_autoplay Whether the flash movie should start playing
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* as soon as it is shown, or if it should show a 'play' button.
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* @return {string} The flash URL to be embedded on the page.
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*/
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goog.ui.media.GoogleVideoModel.buildFlashUrl = function(videoId, opt_autoplay) {
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var autoplay = opt_autoplay ? '&autoplay=1' : '';
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return 'http://video.google.com/googleplayer.swf?docid=' +
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goog.string.urlEncode(videoId) +
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'&hl=en&fs=true' + autoplay;
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};
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/**
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* Gets the GoogleVideo video id.
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* @return {string} The GoogleVideo video id.
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*/
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goog.ui.media.GoogleVideoModel.prototype.getVideoId = function() {
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return this.videoId_;
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};
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