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/* 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 });
});
}
};
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