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-// Copyright 2011 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 provides a reusable GoogleVideo UI component given a public
- * GoogleVideo video URL.
- *
- * goog.ui.media.GoogleVideo is actually a {@link goog.ui.ControlRenderer}, a
- * stateless class - that could/should be used as a Singleton with the static
- * method {@code goog.ui.media.GoogleVideo.getInstance} -, that knows how to
- * render GoogleVideo videos. It is designed to be used with a
- * {@link goog.ui.Control}, which will actually control the media renderer and
- * provide the {@link goog.ui.Component} base. This design guarantees that all
- * different types of medias will behave alike but will look different.
- *
- * goog.ui.media.GoogleVideo expects {@code goog.ui.media.GoogleVideoModel} on
- * {@code goog.ui.Control.getModel} as data models, and renders a flash object
- * that will show the contents of that video.
- *
- * Example of usage:
- *
- * <pre>
- * var video = goog.ui.media.GoogleVideoModel.newInstance(
- * 'http://video.google.com/videoplay?docid=6698933542780842398');
- * goog.ui.media.GoogleVideo.newControl(video).render();
- * </pre>
- *
- * GoogleVideo medias currently support the following states:
- *
- * <ul>
- * <li> {@link goog.ui.Component.State.DISABLED}: shows 'flash not available'
- * <li> {@link goog.ui.Component.State.HOVER}: mouse cursor is over the video
- * <li> {@link goog.ui.Component.State.SELECTED}: flash video is shown
- * </ul>
- *
- * Which can be accessed by
- * <pre>
- * video.setEnabled(true);
- * video.setHighlighted(true);
- * video.setSelected(true);
- * </pre>
- *
- *
- * @supported IE6+, FF2+, Chrome, Safari. Requires flash to actually work.
- */
-
-
-goog.provide('goog.ui.media.GoogleVideo');
-goog.provide('goog.ui.media.GoogleVideoModel');
-
-goog.require('goog.string');
-goog.require('goog.ui.media.FlashObject');
-goog.require('goog.ui.media.Media');
-goog.require('goog.ui.media.MediaModel');
-goog.require('goog.ui.media.MediaModel.Player');
-goog.require('goog.ui.media.MediaRenderer');
-
-
-
-/**
- * Subclasses a goog.ui.media.MediaRenderer to provide a GoogleVideo specific
- * media renderer.
- *
- * This class knows how to parse GoogleVideo URLs, and render the DOM structure
- * of GoogleVideo video players. This class is meant to be used as a singleton
- * static stateless class, that takes {@code goog.ui.media.Media} instances and
- * renders it. It expects {@code goog.ui.media.Media.getModel} to return a well
- * formed, previously constructed, GoogleVideo video id, which is the data model
- * this renderer will use to construct the DOM structure.
- * {@see goog.ui.media.GoogleVideo.newControl} for a example of constructing a
- * control with this renderer.
- *
- * This design is patterned after http://go/closure_control_subclassing
- *
- * It uses {@link goog.ui.media.FlashObject} to embed the flash object.
- *
- * @constructor
- * @extends {goog.ui.media.MediaRenderer}
- */
-goog.ui.media.GoogleVideo = function() {
- goog.ui.media.MediaRenderer.call(this);
-};
-goog.inherits(goog.ui.media.GoogleVideo, goog.ui.media.MediaRenderer);
-goog.addSingletonGetter(goog.ui.media.GoogleVideo);
-
-
-/**
- * A static convenient method to construct a goog.ui.media.Media control out of
- * a GoogleVideo model. It sets it as the data model goog.ui.media.GoogleVideo
- * renderer uses, sets the states supported by the renderer, and returns a
- * Control that binds everything together. This is what you should be using for
- * constructing GoogleVideo videos, except if you need finer control over the
- * configuration.
- *
- * @param {goog.ui.media.GoogleVideoModel} dataModel The GoogleVideo data model.
- * @param {goog.dom.DomHelper=} opt_domHelper Optional DOM helper, used for
- * document interaction.
- * @return {goog.ui.media.Media} A Control binded to the GoogleVideo renderer.
- */
-goog.ui.media.GoogleVideo.newControl = function(dataModel, opt_domHelper) {
- var control = new goog.ui.media.Media(
- dataModel,
- goog.ui.media.GoogleVideo.getInstance(),
- opt_domHelper);
- // GoogleVideo videos don't have any thumbnail for now, so we show the
- // "selected" version of the UI at the start, which is the flash player.
- control.setSelected(true);
- return control;
-};
-
-
-/**
- * Default CSS class to be applied to the root element of components rendered
- * by this renderer.
- *
- * @type {string}
- */
-goog.ui.media.GoogleVideo.CSS_CLASS =
- goog.getCssName('goog-ui-media-googlevideo');
-
-
-/**
- * Creates the initial DOM structure of the GoogleVideo video, which is
- * basically a the flash object pointing to a GoogleVideo video player.
- *
- * @param {goog.ui.Control} c The media control.
- * @return {Element} The DOM structure that represents this control.
- * @override
- */
-goog.ui.media.GoogleVideo.prototype.createDom = function(c) {
- var control = /** @type {goog.ui.media.Media} */ (c);
- var div = goog.base(this, 'createDom', control);
-
- var dataModel =
- /** @type {goog.ui.media.GoogleVideoModel} */ (control.getDataModel());
-
- var flash = new goog.ui.media.FlashObject(
- dataModel.getPlayer().getUrl() || '',
- control.getDomHelper());
- flash.render(div);
-
- return div;
-};
-
-
-/**
- * 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.media.GoogleVideo.prototype.getCssClass = function() {
- return goog.ui.media.GoogleVideo.CSS_CLASS;
-};
-
-
-
-/**
- * The {@code goog.ui.media.GoogleVideo} media data model. It stores a required
- * {@code videoId} field, sets the GoogleVideo URL, and allows a few optional
- * parameters.
- *
- * @param {string} videoId The GoogleVideo video id.
- * @param {string=} opt_caption An optional caption of the GoogleVideo video.
- * @param {string=} opt_description An optional description of the GoogleVideo
- * video.
- * @param {boolean=} opt_autoplay Whether to autoplay video.
- * @constructor
- * @extends {goog.ui.media.MediaModel}
- */
-goog.ui.media.GoogleVideoModel = function(videoId, opt_caption, opt_description,
- opt_autoplay) {
- goog.ui.media.MediaModel.call(
- this,
- goog.ui.media.GoogleVideoModel.buildUrl(videoId),
- opt_caption,
- opt_description,
- goog.ui.media.MediaModel.MimeType.FLASH);
-
- /**
- * The GoogleVideo video id.
- * @type {string}
- * @private
- */
- this.videoId_ = videoId;
-
- this.setPlayer(new goog.ui.media.MediaModel.Player(
- goog.ui.media.GoogleVideoModel.buildFlashUrl(videoId, opt_autoplay)));
-};
-goog.inherits(goog.ui.media.GoogleVideoModel, goog.ui.media.MediaModel);
-
-
-/**
- * Regular expression used to extract the GoogleVideo video id (docid) out of
- * GoogleVideo URLs.
- *
- * @type {RegExp}
- * @private
- * @const
- */
-goog.ui.media.GoogleVideoModel.MATCHER_ =
- /^http:\/\/(?:www\.)?video\.google\.com\/videoplay.*[\?#]docid=(-?[0-9]+)#?$/i;
-
-
-/**
- * A auxiliary static method that parses a GoogleVideo URL, extracting the ID of
- * the video, and builds a GoogleVideoModel.
- *
- * @param {string} googleVideoUrl A GoogleVideo video URL.
- * @param {string=} opt_caption An optional caption of the GoogleVideo video.
- * @param {string=} opt_description An optional description of the GoogleVideo
- * video.
- * @param {boolean=} opt_autoplay Whether to autoplay video.
- * @return {goog.ui.media.GoogleVideoModel} The data model that represents the
- * GoogleVideo URL.
- * @see goog.ui.media.GoogleVideoModel.getVideoId()
- * @throws Error in case the parsing fails.
- */
-goog.ui.media.GoogleVideoModel.newInstance = function(googleVideoUrl,
- opt_caption,
- opt_description,
- opt_autoplay) {
- if (goog.ui.media.GoogleVideoModel.MATCHER_.test(googleVideoUrl)) {
- var data = goog.ui.media.GoogleVideoModel.MATCHER_.exec(googleVideoUrl);
- return new goog.ui.media.GoogleVideoModel(
- data[1], opt_caption, opt_description, opt_autoplay);
- }
-
- throw Error('failed to parse video id from GoogleVideo url: ' +
- googleVideoUrl);
-};
-
-
-/**
- * The opposite of {@code goog.ui.media.GoogleVideo.newInstance}: it takes a
- * videoId and returns a GoogleVideo URL.
- *
- * @param {string} videoId The GoogleVideo video ID.
- * @return {string} The GoogleVideo URL.
- */
-goog.ui.media.GoogleVideoModel.buildUrl = function(videoId) {
- return 'http://video.google.com/videoplay?docid=' +
- goog.string.urlEncode(videoId);
-};
-
-
-/**
- * An auxiliary method that builds URL of the flash movie to be embedded,
- * out of the GoogleVideo video id.
- *
- * @param {string} videoId The GoogleVideo video ID.
- * @param {boolean=} opt_autoplay Whether the flash movie should start playing
- * as soon as it is shown, or if it should show a 'play' button.
- * @return {string} The flash URL to be embedded on the page.
- */
-goog.ui.media.GoogleVideoModel.buildFlashUrl = function(videoId, opt_autoplay) {
- var autoplay = opt_autoplay ? '&autoplay=1' : '';
- return 'http://video.google.com/googleplayer.swf?docid=' +
- goog.string.urlEncode(videoId) +
- '&hl=en&fs=true' + autoplay;
-};
-
-
-/**
- * Gets the GoogleVideo video id.
- * @return {string} The GoogleVideo video id.
- */
-goog.ui.media.GoogleVideoModel.prototype.getVideoId = function() {
- return this.videoId_;
-};