1 files changed, 120 insertions, 0 deletions
diff --git a/mobile/android/chrome/content/FeedHandler.js b/mobile/android/chrome/content/FeedHandler.js
new file mode 100644
index 000000000..91d73ee8d
--- /dev/null
+++ b/mobile/android/chrome/content/FeedHandler.js
@@ -0,0 +1,120 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+var FeedHandler = {
+  PREF_CONTENTHANDLERS_BRANCH: "browser.contentHandlers.types.",
+  TYPE_MAYBE_FEED: "application/vnd.mozilla.maybe.feed",
+
+  _contentTypes: null,
+
+  getContentHandlers: function fh_getContentHandlers(contentType) {
+    if (!this._contentTypes)
+      this.loadContentHandlers();
+
+    if (!(contentType in this._contentTypes))
+      return [];
+
+    return this._contentTypes[contentType];
+  },
+  
+  loadContentHandlers: function fh_loadContentHandlers() {
+    this._contentTypes = {};
+
+    let kids = Services.prefs.getBranch(this.PREF_CONTENTHANDLERS_BRANCH).getChildList("");
+
+    // First get the numbers of the providers by getting all ###.uri prefs
+    let nums = [];
+    for (let i = 0; i < kids.length; i++) {
+      let match = /^(\d+)\.uri$/.exec(kids[i]);
+      if (!match)
+        continue;
+      else
+        nums.push(match[1]);
+    }
+
+    // Sort them, to get them back in order
+    nums.sort(function(a, b) { return a - b; });
+
+    // Now register them
+    for (let i = 0; i < nums.length; i++) {
+      let branch = Services.prefs.getBranch(this.PREF_CONTENTHANDLERS_BRANCH + nums[i] + ".");
+      let vals = branch.getChildList("");
+      if (vals.length == 0)
+        return;
+
+      try {
+        let type = branch.getCharPref("type");
+        let uri = branch.getComplexValue("uri", Ci.nsIPrefLocalizedString).data;
+        let title = branch.getComplexValue("title", Ci.nsIPrefLocalizedString).data;
+
+        if (!(type in this._contentTypes))
+          this._contentTypes[type] = [];
+        this._contentTypes[type].push({ contentType: type, uri: uri, name: title });
+      }
+      catch(ex) {}
+    }
+  },
+
+  observe: function fh_observe(aSubject, aTopic, aData) {
+    if (aTopic === "Feeds:Subscribe") {
+      let args = JSON.parse(aData);
+      let tab = BrowserApp.getTabForId(args.tabId);
+      if (!tab)
+        return;
+
+      let browser = tab.browser;
+      let feeds = browser.feeds;
+      if (feeds == null)
+        return;
+
+      // First, let's decide on which feed to subscribe
+      let feedIndex = -1;
+      if (feeds.length > 1) {
+        let p = new Prompt({
+          window: browser.contentWindow,
+          title: Strings.browser.GetStringFromName("feedHandler.chooseFeed")
+        }).setSingleChoiceItems(feeds.map(function(feed) {
+          return { label: feed.title || feed.href }
+        })).show((function(data) {
+          feedIndex = data.button;
+          if (feedIndex == -1)
+            return;
+
+          this.loadFeed(feeds[feedIndex], browser);
+        }).bind(this));
+        return;
+      }
+
+      this.loadFeed(feeds[0], browser);
+    }
+  },
+
+  loadFeed: function fh_loadFeed(aFeed, aBrowser) {
+    let feedURL = aFeed.href;
+
+    // Next, we decide on which service to send the feed
+    let handlers = this.getContentHandlers(this.TYPE_MAYBE_FEED);
+    if (handlers.length == 0)
+      return;
+
+    // JSON for Prompt
+    let p = new Prompt({
+      window: aBrowser.contentWindow,
+      title: Strings.browser.GetStringFromName("feedHandler.subscribeWith")
+    }).setSingleChoiceItems(handlers.map(function(handler) {
+      return { label: handler.name };
+    })).show(function(data) {
+      if (data.button == -1)
+        return;
+
+      // Merge the handler URL and the feed URL
+      let readerURL = handlers[data.button].uri;
+      readerURL = readerURL.replace(/%s/gi, encodeURIComponent(feedURL));
+
+      // Open the resultant URL in a new tab
+      BrowserApp.addTab(readerURL, { parentId: BrowserApp.selectedTab.id });
+    });
+  }
+};