/**
* Copyright 2010 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 org.waveprotocol.wave.client.doodad.suggestion.plugins.video;
import org.waveprotocol.wave.client.doodad.link.Link;
import org.waveprotocol.wave.client.doodad.link.LinkAnnotationHandler;
import org.waveprotocol.wave.client.doodad.suggestion.Plugin;
import org.waveprotocol.wave.client.doodad.suggestion.misc.GadgetCommand;
import org.waveprotocol.wave.client.editor.content.CMutableDocument;
import org.waveprotocol.wave.client.editor.content.ContentElement;
import org.waveprotocol.wave.client.editor.content.ContentNode;
import org.waveprotocol.wave.client.editor.content.ContentTextNode;
import org.waveprotocol.wave.client.editor.sugg.Menu;
import org.waveprotocol.wave.client.gadget.StateMap;
import org.waveprotocol.wave.model.document.util.RangeTracker;
import org.waveprotocol.wave.model.util.StringMap;
import java.util.Map;
/**
* Plugin for suggestion that recognizes videos and adds video specific
* suggestions.
*
*
*/
public class VideoLinkPlugin implements Plugin {
/**
* Links with this prefix will trigger the youtube embed suggestion.
* The following sample URLs are accepted:
* http://www.youtube.com/watch?v=url_friendly_base64-id#something
* http://www.youtube.com/watch#v=url_friendly_base64-id&something
* http://www.youtube.com/watch#!v=url_friendly_base64-id!something
*/
private static final String YOUTUBE_PREFIX = "^http:\\/\\/www\\.youtube\\.com\\/watch(\\?|#!?)v=";
private static final String YOUTUBE_SUFFIX = "[^\\w\\-].*";
// @NotInternationalized
private static final String EMBED_VIDEO = "Embed video";
private static final String MOVIE_ATTR = "movie";
private static final String MOVIE_GADGET_URL =
"http://wave-api.appspot.com/public/gadgets/youtube/youtube.xml";
private static final String GADGET_MOVIE_KEY = "movie";
private static VideoLinkPlugin instance = null;
/**
* Returns the singleton instance of the plugin.
*/
public static Plugin get() {
if (instance == null) {
instance = new VideoLinkPlugin();
}
return instance;
}
@Override
public void maybeFillAttributes(Map<String, Object> before, final StringMap<String> attributes) {
String url = LinkAnnotationHandler.getLink(before);
if (url == null) {
return;
}
String movieId = url.replaceFirst(YOUTUBE_PREFIX, "");
if (movieId.length() == url.length()) {
// Prefix is not recognized.
return;
}
// Cut off the tail after the video parameter. There could be other parameters, fragment, or
// other uninteresting information after the ID parameter. The parameter order isn't strictly
// enforced, but we assume that the prefix ends in v=, so this is safe.
movieId = movieId.replaceFirst(YOUTUBE_SUFFIX, "");
if (movieId.isEmpty()) {
return;
}
attributes.put(MOVIE_ATTR, movieId);
}
@Override
public void populateSuggestionMenu(Menu menu, RangeTracker replacementRangeHelper,
CMutableDocument mutableDocument, ContentElement element) {
final String movieAttribute = element.getAttribute(MOVIE_ATTR);
if (movieAttribute != null) {
final StateMap stateMap = StateMap.create();
stateMap.put(GADGET_MOVIE_KEY, movieAttribute);
menu.addItem(EMBED_VIDEO,
new GadgetCommand<ContentNode, ContentElement, ContentTextNode>(MOVIE_GADGET_URL,
stateMap, mutableDocument, Link.AUTO_KEY, replacementRangeHelper));
}
}
}