Refactored JS to use observer-notifier system.
git-svn-id: file:///tmp/snv/trunk@9 12951d8a-c33d-4b7c-b961-822215c816e1
This commit is contained in:
parent
3d33406796
commit
0aa71851ef
@ -1,7 +1,7 @@
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move to JSON data format -- done
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XBL -- done
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format JS/refactor JS/Use FUEL -- done
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put license
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caching/db, threading, XUL templates
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new UI
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caching/db, threading
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new UI, icons, thumbnails
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JQuery
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put license
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@ -1,9 +1,38 @@
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var DiggSidebar = {
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/*
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Digg Sidebar - Shows Digg stories in the Firefox sidebar in real time.
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Copyright (C) 2008 Abhinav Sarkar <abhinav dot sarkar at gmail dot com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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DiggSidebar = {
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prefs: Application.extensions.get("diggsidebar@abhinavsarkar.net").prefs,
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storyListRefreshEventTopic: "extension-diggsidebar-abhinavsarkar-net-storylist-refresh",
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endpoint: {
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container: null,
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topic: null,
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category: "all"
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},
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updateInterval: 10,
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updateIntervalDecay: 0,
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shownStoriesCount: 30,
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categories: ['All', 'Popular', 'Upcoming', 'Hot', 'Top'],
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timerId: null,
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currentStories : new Array(),
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storyIds: [],
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playing: true,
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stories: [],
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fetchData: function(url, handler) {
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DiggSidebar.diggIndicator.style.display = '';
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@ -95,31 +124,36 @@ var DiggSidebar = {
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DiggSidebar.diggIndicator.style.display = 'none';
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},
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populateStoryList: function(e) {
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var XHR = e.target;
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//Application.console.log(XHR.responseText);
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var data = DiggSidebar.Utils.decodeJson(XHR.responseText);
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var stories = data.stories;
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populateStoryList: function() {
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while (DiggSidebar.storyList.firstChild) {
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DiggSidebar.storyList.removeChild(DiggSidebar.storyList.firstChild);
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}
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var newStories = new Array();
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//Application.console.log(stories.length);
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var newStoryIds = new Array();
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Application.console.log(DiggSidebar.stories.length);
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stories.forEach(function (story) {
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newStories.push(story.id);
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//Application.console.log(i + " " + story.title + " " + story.id);
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var jp = new JPath(DiggSidebar.stories);
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var filtedStories = DiggSidebar.stories;
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if (DiggSidebar.endpoint.topic)
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filtedStories = jp.$(function(story){
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return story.$("topic/short_name").json == DiggSidebar.endpoint.topic;
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}).json;
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if (DiggSidebar.endpoint.container)
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filtedStories = jp.$(function(story){
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return story.$("container/short_name").json == DiggSidebar.endpoint.container;
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}).json;
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filtedStories.forEach(function (story, index) {
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if (index < DiggSidebar.shownStoriesCount) {
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var listitem = DiggSidebar.storyList.appendChild(document.createElement('richlistitem'));
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listitem.id = "story_" + story.id;
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listitem.setAttribute('title', story.title);
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if (DiggSidebar.currentStories.indexOf(story.id) != -1) listitem.new = false;
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if (DiggSidebar.storyIds.indexOf(story.id) != -1) listitem.new = false;
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}
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if (DiggSidebar.storyIds.indexOf(story.id) == -1) newStoryIds.push(story.id);
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});
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DiggSidebar.currentStories = newStories;
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DiggSidebar.setUpdateInterval(stories);
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DiggSidebar.storyIds = DiggSidebar.storyIds.concat(newStoryIds);
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DiggSidebar.setUpdateInterval(DiggSidebar.stories.slice(-5));
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DiggSidebar.diggIndicator.style.display = 'none';
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},
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@ -178,7 +212,20 @@ var DiggSidebar = {
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DiggSidebar.fetchData("http://services.digg.com/stories" + ep.replace(/\/all/g, '') +
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"?count=30" + "&type=json" +
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"&appkey=" + encodeURIComponent("http://diggsidebar.googlepages.com"),
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DiggSidebar.populateStoryList);
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function(e) {
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var newStories = DiggSidebar.Utils.decodeJson(e.target.responseText).stories.filter(
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function(story) {
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return !(DiggSidebar.storyIds.indexOf(story.id) != -1);
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});
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newStories.forEach(function(story) {
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story.category = DiggSidebar.endpoint.category;
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story.read = false;
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});
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DiggSidebar.stories = newStories.concat(DiggSidebar.stories);
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var observerService = Components.classes["@mozilla.org/observer-service;1"]
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.getService(Components.interfaces.nsIObserverService);
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observerService.notifyObservers(null, DiggSidebar.storyListRefreshEventTopic, null);
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});
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},
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getDescription: function(storyId) {
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@ -196,6 +243,12 @@ var DiggSidebar = {
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setUpdateInterval: function(stories) {
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//Adaptive update interval code START
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if (stories.length == 0) {
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window.clearTimeout(DiggSidebar.timerId);
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var timeout = Math.round(DiggSidebar.updateInterval*(Math.pow(1.5, DiggSidebar.updateIntervalDecay)));
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DiggSidebar.timerId = window.setTimeout(DiggSidebar.getStories, timeout);
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return;
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}
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var sum = 0;
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var weights = [4, 3, 2, 1]
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var date = (stories[0].promote_date != null) ? 'promote_date' : 'submit_date';
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@ -216,32 +269,46 @@ var DiggSidebar = {
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//Application.console.log(updateInterval);
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if (updateInterval > 0) {
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var previousUpdateInterval = DiggSidebar.prefs.get("updateinterval").value;
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DiggSidebar.prefs.get("updateinterval").value = updateInterval;
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var previousUpdateInterval = DiggSidebar.updateInterval;
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DiggSidebar.updateInterval = updateInterval;
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var updateIntervalDecay = DiggSidebar.prefs.get("updateintervaldecay").value;
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var updateIntervalDecay = DiggSidebar.updateIntervalDecay;
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if (previousUpdateInterval == updateInterval)
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DiggSidebar.prefs.get("updateintervaldecay").value = updateIntervalDecay + 1;
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DiggSidebar.updateIntervalDecay = updateIntervalDecay + 1;
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else
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DiggSidebar.prefs.get("updateintervaldecay").value = 0;
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DiggSidebar.updateIntervalDecay = 0;
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}
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window.clearTimeout(DiggSidebar.timerId);
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var updateInterval = DiggSidebar.prefs.get("updateinterval").value;
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var updateIntervalDecay = DiggSidebar.prefs.get("updateintervaldecay").value;
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var timeout = Math.round(updateInterval*(Math.pow(1.5, updateIntervalDecay)));
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var timeout = Math.round(DiggSidebar.updateInterval*(Math.pow(1.5, DiggSidebar.updateIntervalDecay)));
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DiggSidebar.timerId = window.setTimeout(DiggSidebar.getStories, timeout);
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//Adaptive update interval code END
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},
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setEndPoint: function(ep) {
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DiggSidebar.prefs.get("endpoint").value = ep;
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DiggSidebar.endpoint = DiggSidebar.getEndpointParts(ep);
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window.clearTimeout(DiggSidebar.timerId);
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DiggSidebar.getStories();
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},
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getEndpointParts: function(ep) {
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var tmp = {
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topic: null,
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container: null,
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category: "all"
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};
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parts = ep.split("/");
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if (parts.length == 2)
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tmp.category = parts[1];
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else if (parts.length == 4) {
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tmp[parts[1]] = parts[2];
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tmp.category = parts[3];
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}
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return tmp;
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},
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togglePlayPause: function() {
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if (DiggSidebar.playing) {
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window.clearTimeout(DiggSidebar.timerId);
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@ -249,10 +316,7 @@ var DiggSidebar = {
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DiggSidebar.diggPlayPause.setAttribute("tooltiptext", "Click to Start autoupdate");
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DiggSidebar.playing = false;
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} else {
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var updateInterval = DiggSidebar.prefs.get("updateinterval").value;
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var updateIntervalDecay = DiggSidebar.prefs.get("updateintervaldecay").value;
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var timeout = Math.round(updateInterval*(Math.pow(1.5, updateIntervalDecay)));
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var timeout = Math.round(DiggSidebar.updateInterval*(Math.pow(1.5, DiggSidebar.updateIntervalDecay)));
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DiggSidebar.timerId = window.setTimeout(DiggSidebar.getStories, timeout);
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DiggSidebar.diggPlayPause.image = "chrome://diggsidebar/content/image/Pause.png";
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DiggSidebar.diggPlayPause.setAttribute("tooltiptext", "Click to Pause autoupdate");
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@ -261,6 +325,7 @@ var DiggSidebar = {
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},
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initialize: function(){
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DiggSidebar.endpoint = DiggSidebar.getEndpointParts(DiggSidebar.prefs.get("endpoint").value);
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var $ = function(id) {return document.getElementById(id)};
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DiggSidebar.diggIndicator = $('diggIndicator');
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DiggSidebar.topicPopup = $('topicPopup');
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@ -268,8 +333,14 @@ var DiggSidebar = {
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DiggSidebar.storyList = $('storyList');
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DiggSidebar.diggEndPoint = $('diggEndPoint');
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DiggSidebar.diggPlayPause = $('diggPlayPause');
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DiggSidebar.storyListObserver = new StoryListObserver();
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DiggSidebar.createMenu();
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DiggSidebar.getStories();
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},
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destroy: function(){
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DiggSidebar.storyListObserver.unregister();
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}
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};
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@ -290,6 +361,38 @@ DiggSidebar.Utils = {
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return json.decode(string);
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}
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}
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var StoryListObserver = function() {
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this.registered = false;
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this.register();
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}
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StoryListObserver.prototype = {
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observe: function(subject, topic, data) {
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if (topic == window.DiggSidebar.storyListRefreshEventTopic) {
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window.DiggSidebar.populateStoryList();
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}
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},
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register: function() {
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if (this.registered == false) {
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var observerService = Components.classes["@mozilla.org/observer-service;1"]
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.getService(Components.interfaces.nsIObserverService);
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observerService.addObserver(this, DiggSidebar.storyListRefreshEventTopic, false);
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this.registered = true;
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}
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},
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unregister: function() {
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if (this.registered == true) {
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var observerService = Components.classes["@mozilla.org/observer-service;1"]
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.getService(Components.interfaces.nsIObserverService);
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observerService.removeObserver(this, DiggSidebar.storyListRefreshEventTopic);
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this.registered = false;
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}
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}
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}
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/*TODO
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preferences
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toolbar button
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@ -6,8 +6,10 @@
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<page id="sbDiggSidebar" title="&diggsidebar.title;"
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xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
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onload="DiggSidebar.initialize()">
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onload="DiggSidebar.initialize()"
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onunload="DiggSidebar.destroy()">
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<script src="chrome://diggsidebar/content/diggsidebar.js" type="application/x-javascript" />
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<script src="chrome://diggsidebar/content/jpath.js" type="application/x-javascript" />
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<hbox>
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<toolbar flex="1">
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<toolbaritem>
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355
chrome/content/jpath.js
Normal file
355
chrome/content/jpath.js
Normal file
@ -0,0 +1,355 @@
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/*
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JPath 1.0.3 - json equivalent to xpath
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Copyright (C) 2007 Bryan English <bryan at bluelinecity dot com>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Usage:
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var jpath = new JPath( myjsonobj );
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var somevalue = jpath.$('book/title').json; //results in title
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//or
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var somevalue = jpath.query('book/title'); //results in title
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Supported XPath-like Syntax:
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/tagname
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//tagname
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tagname
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* wildcard
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[] predicates
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operators ( >=, ==, <= )
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array selection
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..
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*
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and, or
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nodename[0]
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nodename[last()]
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nodename[position()]
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nodename[last()-1]
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nodename[somenode > 3]/node
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nodename[count() > 3]/node
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Tested With:
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Firefox 2-3, IE 6-7
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Update Log:
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1.0.1 - Bugfix for zero-based element selection
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1.0.2 - Bugfix for IE not handling eval() and returning a function
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1.0.3 - Bugfix added support for underscore and dash in query() function
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Bugfix improper use of Array.concat which was flattening arrays
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Added support for single equal sign in query() function
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Added support for count() xpath function
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Added support for and, or boolean expression in predicate blocks
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Added support for global selector $$ and //
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Added support for wildcard (*) selector support
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*/
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function JPath( json, parent )
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{
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this.json = json;
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this._parent = parent;
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}
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JPath.prototype = {
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/*
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Property: json
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Copy of current json segment to operate on
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*/
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json: null,
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/*
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Property: parent
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Parent json object, null if root.
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*/
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parent: null,
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/*
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Method: $
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Performs a find query on the current jpath object.
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Parameters:
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str - mixed, find query to perform. Can consist of a nodename or nodename path or function object or integer.
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Return:
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jpath - Returns the resulting jpath object after performing find query.
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*/
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'$': function ( str )
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{
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var result = null;
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var working = this;
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if ( this.json && str !== null )
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{
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switch ( typeof(str) )
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{
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case 'function':
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result = this.f(str).json;
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break;
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case 'number':
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result = this.json[str] || null;
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break;
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case 'string':
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var names = str.split('/');
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//foreach slash delimited node name//
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for ( var i=0; i<names.length ; i++ )
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{
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var name = new RegExp('^' + names[i].replace(/\*/g,'.*') + '$');
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var isArray = (working.json instanceof Array);
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var a = new Array();
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//foreach working node property//
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for ( var p in working.json )
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||||
{
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if ( typeof( working.json[p] ) != 'function' )
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||||
{
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||||
if ( isArray && (arguments.callee.caller != this.$$) )
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{
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||||
a = a.concat( this.findAllByRegExp( name, working.json[p] ) );
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}
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else if ( name.test(p) )
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{
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a.push( working.json[p] );
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}
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}
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}
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working = new JPath( ( a.length==0 ? null : ( ( a.length == 1) ? a[0] : a ) ), working );
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}
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return working;
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break;
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}
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}
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return new JPath( result, this );
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},
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||||
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/*
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Method: $$
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Performs a global, recursive find query on the current jpath object.
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Parameters:
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str - mixed, find query to perform. Can consist of a nodename or nodename path or function object or integer.
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Return:
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jpath - Returns the resulting jpath object after performing find query.
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*/
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'$$': function( str )
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{
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var r = this.$(str,true).json;
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var arr = new Array();
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if ( r instanceof Array )
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arr = arr.concat(r);
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else if ( r !== null )
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arr.push(r);
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||||
|
||||
for ( var p in this.json )
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||||
{
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||||
if ( typeof( this.json[p] ) == 'object' )
|
||||
{
|
||||
arr = arr.concat( new JPath( this.json[p], this ).$$(str).json );
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||||
}
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||||
}
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||||
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return new JPath( arr, this );
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},
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||||
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||||
/*
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||||
Method: findAllByRegExp
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||||
Looks through a list of an object properties using a regular expression
|
||||
|
||||
Parameters:
|
||||
re - regular expression, to use to search with
|
||||
obj - object, the object to search through
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||||
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||||
Returns:
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array - resulting properties
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||||
*/
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||||
findAllByRegExp: function( re, obj )
|
||||
{
|
||||
var a = new Array();
|
||||
|
||||
for ( var p in obj )
|
||||
{
|
||||
if ( obj instanceof Array )
|
||||
{
|
||||
a = a.concat( this.findAllByRegExp( re, obj[p] ) );
|
||||
}
|
||||
else if ( typeof( obj[p] ) != 'function' && re.test(p) )
|
||||
{
|
||||
a.push( obj[p] );
|
||||
}
|
||||
}
|
||||
|
||||
return a;
|
||||
},
|
||||
|
||||
/*
|
||||
Method: query (beta)
|
||||
Performs a find query on the current jpath object using a single string similar to xpath. This method
|
||||
is currently expirimental.
|
||||
|
||||
Parameters:
|
||||
str - string, full xpath-like query to perform on the current object.
|
||||
|
||||
Return:
|
||||
mixed - Returns the resulting json value after performing find query.
|
||||
|
||||
*/
|
||||
query: function( str )
|
||||
{
|
||||
var re = {
|
||||
" and ":" && ",
|
||||
" or ":" || ",
|
||||
"([\\#\\*\\@a-z\\_][\\*a-z0-9_\\-]*)(?=(?:\\s|$|\\[|\\]|\\/))" : "\$('$1').",
|
||||
"\\[([0-9])+\\]" : "\$($1).",
|
||||
"\\.\\." : "parent().",
|
||||
"\/\/" : "$",
|
||||
"(^|\\[|\\s)\\/" : "$1root().",
|
||||
"\\/" : '',
|
||||
"([^\\=\\>\\<\\!])\\=([^\\=])" : '$1==$2',
|
||||
"\\[" : "$(function(j){ with(j){return(",
|
||||
"\\]" : ");}}).",
|
||||
"\\(\\.":'(',
|
||||
"(\\.|\\])(?!\\$|\\p)":"$1json",
|
||||
"count\\(([^\\)]+)\\)":"count('$1')"
|
||||
};
|
||||
|
||||
//save quoted strings//
|
||||
var quotes = /(\'|\")([^\1]*)\1/;
|
||||
var saves = new Array();
|
||||
while ( quotes.test(str) )
|
||||
{
|
||||
saves.push( str.match(quotes)[2] );
|
||||
str = str.replace(quotes,'%'+ (saves.length-1) +'%');
|
||||
}
|
||||
|
||||
for ( var e in re )
|
||||
{
|
||||
str = str.replace( new RegExp(e,'ig'), re[e] );
|
||||
}
|
||||
//alert('this.' + str.replace(/\%(\d+)\%/g,'saves[$1]') + ";");
|
||||
|
||||
return eval('this.' + str.replace(/\%(\d+)\%/g,'saves[$1]') + ";");
|
||||
},
|
||||
|
||||
/*
|
||||
Method: f
|
||||
Performs the equivilant to an xpath predicate eval on the current nodeset.
|
||||
|
||||
Parameters:
|
||||
f - function, an iterator function that is executed for every json node and is expected to return a boolean
|
||||
value which determines if that particular node is selected. Alternativly you can submit a string which will be
|
||||
inserted into a prepared function.
|
||||
|
||||
Return:
|
||||
jpath - Returns the resulting jpath object after performing find query.
|
||||
|
||||
*/
|
||||
f: function ( iterator )
|
||||
{
|
||||
var a = new Array();
|
||||
|
||||
if ( typeof(iterator) == 'string' )
|
||||
{
|
||||
eval('iterator = function(j){with(j){return('+ iterator +');}}');
|
||||
}
|
||||
|
||||
for ( var p in this.json )
|
||||
{
|
||||
var j = new JPath(this.json[p], this);
|
||||
j.index = p;
|
||||
if ( iterator( j ) )
|
||||
{
|
||||
a.push( this.json[p] );
|
||||
}
|
||||
}
|
||||
|
||||
return new JPath( a, this );
|
||||
},
|
||||
|
||||
/*
|
||||
Method: parent
|
||||
Returns the parent jpath object or itself if its the root node
|
||||
|
||||
Return:
|
||||
jpath - Returns the parent jpath object or itself if its the root node
|
||||
|
||||
*/
|
||||
parent: function()
|
||||
{
|
||||
return ( (this._parent) ? this._parent : this );
|
||||
},
|
||||
|
||||
/*
|
||||
Method: position
|
||||
Returns the index position of the current node. Only valid within a function or predicate
|
||||
|
||||
Return:
|
||||
int - array index position of this json object.
|
||||
*/
|
||||
position: function()
|
||||
{
|
||||
return this.index;
|
||||
},
|
||||
|
||||
/*
|
||||
Method: last
|
||||
Returns true if this is the last node in the nodeset. Only valid within a function or predicate
|
||||
|
||||
Return:
|
||||
booean - Returns true if this is the last node in the nodeset
|
||||
*/
|
||||
last: function()
|
||||
{
|
||||
return (this.index == (this._parent.json.length-1));
|
||||
},
|
||||
|
||||
/*
|
||||
Method: count
|
||||
Returns the count of child nodes in the current node
|
||||
|
||||
Parameters:
|
||||
string - optional node name to count, defaults to all
|
||||
|
||||
Return:
|
||||
booean - Returns number of child nodes found
|
||||
*/
|
||||
count: function(n)
|
||||
{
|
||||
var found = this.$( n || '*').json;
|
||||
return ( found ? ( found instanceof Array ? found.length : 1 ) : 0 );
|
||||
},
|
||||
|
||||
/*
|
||||
Method: root
|
||||
Returns the root jpath object.
|
||||
|
||||
Return:
|
||||
jpath - The top level, root jpath object.
|
||||
*/
|
||||
root: function ()
|
||||
{
|
||||
return ( this._parent ? this._parent.root() : this );
|
||||
}
|
||||
|
||||
};
|
||||
@ -5,7 +5,7 @@
|
||||
<RDF:Description RDF:about="rdf:#$55wJ23"
|
||||
em:id="{ec8030f7-c20a-464f-9b0e-13a3a9e97384}"
|
||||
em:minVersion="3.0"
|
||||
em:maxVersion="3.1.*" />
|
||||
em:maxVersion="3.1b1" />
|
||||
<RDF:Description RDF:about="urn:mozilla:install-manifest"
|
||||
em:id="diggsidebar@abhinavsarkar.net"
|
||||
em:name="Digg Sidebar"
|
||||
|
||||
Loading…
Reference in New Issue
Block a user