mobile/android/chrome/content/FeedHandler.js

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/mobile/android/chrome/content/FeedHandler.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,120 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
     1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +"use strict";
     1.8 +
     1.9 +var FeedHandler = {
    1.10 +  PREF_CONTENTHANDLERS_BRANCH: "browser.contentHandlers.types.",
    1.11 +  TYPE_MAYBE_FEED: "application/vnd.mozilla.maybe.feed",
    1.12 +
    1.13 +  _contentTypes: null,
    1.14 +
    1.15 +  getContentHandlers: function fh_getContentHandlers(contentType) {
    1.16 +    if (!this._contentTypes)
    1.17 +      this.loadContentHandlers();
    1.18 +
    1.19 +    if (!(contentType in this._contentTypes))
    1.20 +      return [];
    1.21 +
    1.22 +    return this._contentTypes[contentType];
    1.23 +  },
    1.24 +  
    1.25 +  loadContentHandlers: function fh_loadContentHandlers() {
    1.26 +    this._contentTypes = {};
    1.27 +
    1.28 +    let kids = Services.prefs.getBranch(this.PREF_CONTENTHANDLERS_BRANCH).getChildList("");
    1.29 +
    1.30 +    // First get the numbers of the providers by getting all ###.uri prefs
    1.31 +    let nums = [];
    1.32 +    for (let i = 0; i < kids.length; i++) {
    1.33 +      let match = /^(\d+)\.uri$/.exec(kids[i]);
    1.34 +      if (!match)
    1.35 +        continue;
    1.36 +      else
    1.37 +        nums.push(match[1]);
    1.38 +    }
    1.39 +
    1.40 +    // Sort them, to get them back in order
    1.41 +    nums.sort(function(a, b) { return a - b; });
    1.42 +
    1.43 +    // Now register them
    1.44 +    for (let i = 0; i < nums.length; i++) {
    1.45 +      let branch = Services.prefs.getBranch(this.PREF_CONTENTHANDLERS_BRANCH + nums[i] + ".");
    1.46 +      let vals = branch.getChildList("");
    1.47 +      if (vals.length == 0)
    1.48 +        return;
    1.49 +
    1.50 +      try {
    1.51 +        let type = branch.getCharPref("type");
    1.52 +        let uri = branch.getComplexValue("uri", Ci.nsIPrefLocalizedString).data;
    1.53 +        let title = branch.getComplexValue("title", Ci.nsIPrefLocalizedString).data;
    1.54 +
    1.55 +        if (!(type in this._contentTypes))
    1.56 +          this._contentTypes[type] = [];
    1.57 +        this._contentTypes[type].push({ contentType: type, uri: uri, name: title });
    1.58 +      }
    1.59 +      catch(ex) {}
    1.60 +    }
    1.61 +  },
    1.62 +
    1.63 +  observe: function fh_observe(aSubject, aTopic, aData) {
    1.64 +    if (aTopic === "Feeds:Subscribe") {
    1.65 +      let args = JSON.parse(aData);
    1.66 +      let tab = BrowserApp.getTabForId(args.tabId);
    1.67 +      if (!tab)
    1.68 +        return;
    1.69 +
    1.70 +      let browser = tab.browser;
    1.71 +      let feeds = browser.feeds;
    1.72 +      if (feeds == null)
    1.73 +        return;
    1.74 +
    1.75 +      // First, let's decide on which feed to subscribe
    1.76 +      let feedIndex = -1;
    1.77 +      if (feeds.length > 1) {
    1.78 +        let p = new Prompt({
    1.79 +          window: browser.contentWindow,
    1.80 +          title: Strings.browser.GetStringFromName("feedHandler.chooseFeed")
    1.81 +        }).setSingleChoiceItems(feeds.map(function(feed) {
    1.82 +          return { label: feed.title || feed.href }
    1.83 +        })).show((function(data) {
    1.84 +          feedIndex = data.button;
    1.85 +          if (feedIndex == -1)
    1.86 +            return;
    1.87 +
    1.88 +          this.loadFeed(feeds[feedIndex], browser);
    1.89 +        }).bind(this));
    1.90 +        return;
    1.91 +      }
    1.92 +
    1.93 +      this.loadFeed(feeds[0], browser);
    1.94 +    }
    1.95 +  },
    1.96 +
    1.97 +  loadFeed: function fh_loadFeed(aFeed, aBrowser) {
    1.98 +    let feedURL = aFeed.href;
    1.99 +
   1.100 +    // Next, we decide on which service to send the feed
   1.101 +    let handlers = this.getContentHandlers(this.TYPE_MAYBE_FEED);
   1.102 +    if (handlers.length == 0)
   1.103 +      return;
   1.104 +
   1.105 +    // JSON for Prompt
   1.106 +    let p = new Prompt({
   1.107 +      window: aBrowser.contentWindow,
   1.108 +      title: Strings.browser.GetStringFromName("feedHandler.subscribeWith")
   1.109 +    }).setSingleChoiceItems(handlers.map(function(handler) {
   1.110 +      return { label: handler.name };
   1.111 +    })).show(function(data) {
   1.112 +      if (data.button == -1)
   1.113 +        return;
   1.114 +
   1.115 +      // Merge the handler URL and the feed URL
   1.116 +      let readerURL = handlers[data.button].uri;
   1.117 +      readerURL = readerURL.replace(/%s/gi, encodeURIComponent(feedURL));
   1.118 +
   1.119 +      // Open the resultant URL in a new tab
   1.120 +      BrowserApp.addTab(readerURL, { parentId: BrowserApp.selectedTab.id });
   1.121 +    });
   1.122 +  }
   1.123 +};

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