jsbridge.js

属性sosuo算法

const JSBRIDGE_CONTRACTID = "@participatoryculture.org/dtv/jsbridge;1";
const JSBRIDGE_CLASSID    = Components.ID("{421AA951-F53D-4499-B362-E432CAE920F4}");

var pybridge = Components.classes["@participatoryculture.org/dtv/pybridge;1"].
        getService(Components.interfaces.pcfIDTVPyBridge);

function writelog(str) {
    Components.classes['@mozilla.org/consoleservice;1']
	.getService(Components.interfaces.nsIConsoleService)	
	.logStringMessage(str);
}

function twoDigits(data) {
    if (data < 10) return "0" + data;
    else return ""+data;
}

function LoadFinishedListener(area)
{
    this.area = area;
}

var actionGroupCommands = {
  'ChannelSelected': Array('copychannellink', 'recommendcurrentchannel'),
  'ChannelFolderSelected': Array(),
  'VideoSelected': Array('copyvideourl', 'savevideoas'),
  'VideosSelected': Array('removevideo'),
  'PlaylistLikeSelected': Array('renameplaylist'),
  'PlaylistLikesSelected': Array('removeplaylist'),
  'ChannelLikesSelected': Array(),
  'ChannelLikeSelected': Array('renamechannel', 'removechannel', 'updatechannel'),
  'ChannelsSelected': Array(),
  'VideoPlayable': Array(),
}

LoadFinishedListener.prototype =
{
  QueryInterface : function(aIID)
  {
    if (aIID.equals(Components.interfaces.nsIWebProgressListener) ||
        aIID.equals(Components.interfaces.nsISupportsWeakReference) ||
        aIID.equals(Components.interfaces.nsISupports))
    {
      return this;
    }
    throw Components.results.NS_NOINTERFACE;
  },

  onStateChange : function(aWebProgress, aRequest, aStateFlags, aStatus)
  {
    var allFlags = (Components.interfaces.nsIWebProgressListener.STATE_STOP |
        Components.interfaces.nsIWebProgressListener.STATE_IS_WINDOW);
    if((aStateFlags & allFlags) == allFlags) {
      pybridge.pageLoadFinished(this.area, aRequest.name);
    }
  },
  onProgressChange : function(aWebProgress, aRequest, aCurSelfProgress,
aMaxSelfProgress, aCurTotalProgress, aMaxTotalProgress) { },
  onLocationChange : function(aWebProgress, aRequest, aLocation) { },
  onStatusChange : function(aWebProgress, aRequest, aStatus, aMessage) { },
  onSecurityChange : function(aWebProgress, aRequest, aState) { }
} 

// Reference to the progress listeners we create, addProgressListener uses a
// weak reference, so we need to keep a real reference around or else they
// will magically disapear
var progressListeners = {}

function jsBridge() { }

jsBridge.prototype = {
  QueryInterface: function(iid) {
    if (iid.equals(Components.interfaces.pcfIDTVJSBridge) ||
      iid.equals(Components.interfaces.nsISupports))
      return this;
    throw Components.results.NS_ERROR_NO_INTERFACE;
  },

  init: function(window) {
    this.window = window;
    this.document = window.document;
    this.initBrowser("mainDisplay");
    this.initBrowser("videoInfoDisplay");
    this.initBrowser("channelsDisplay");
    this.hideVideoControlsTimer = Components.classes["@mozilla.org/timer;1"].
          createInstance(Components.interfaces.nsITimer);
    this.videoFilename = null;
    this.searchEngineTitles = this.searchEngineNames = null;

    var self = this;
    self.lastMouseDownX = self.lastMouseDownY = 0;
    var saveMousedownPosition = function(event) { 
        self.lastMouseDownX = event.screenX;
        self.lastMouseDownY = event.screenY;
    }
    this.document.addEventListener('mousedown', saveMousedownPosition, true);
  },

  closeWindow: function() {
    this.window.close();
  },

  initBrowser: function(area) {
    var browser = this.document.getElementById(area);
    var listener = new LoadFinishedListener(area);
    browser.addProgressListener(listener);
    progressListeners[area] = listener;
  },

  copyTextToClipboard: function(text) {
    var gClipboardHelper = Components.classes["@mozilla.org/widget/clipboardhelper;1"].getService(Components.interfaces.nsIClipboardHelper);
    gClipboardHelper.copyString(text);
  },

  showContextMenu: function(menuItems) {
    var popup = this.document.getElementById('contextPopup');
    while (popup.firstChild) {
      popup.removeChild(popup.firstChild);
    }
    menu = menuItems.split("\n");
    for(var i = 0; i < menu.length; i++) {
      if(menu[i]) {
        var newItem = this.document.createElement('menuitem');
        if(menu[i].charAt(0) != '_') {
          newItem.setAttribute("label", menu[i]);
        } else {
          newItem.setAttribute("label", menu[i].substr(1));
          newItem.setAttribute("disabled", "true");
        }
        newItem.setAttribute("oncommand", 
           "pybridge.handleContextMenu(" + i + ");");
      } else {
        var newItem = this.document.createElement('menuseparator');
      }
      popup.appendChild(newItem);
    }
    popup.showPopup(this.document.documentElement, this.lastMouseDownX,
        this.lastMouseDownY, "popup", null, null);
  },
  showSearchMenu: function() {
    if(!this.searchEngineNames || !this.searchEngineTitles) return;

    var popup = this.document.getElementById('searchMenu');
    while (popup.firstChild) {
      popup.removeChild(popup.firstChild);
    }
    for (var i = 0; i < this.searchEngineNames.length; i++) {
        var newItem = this.document.createElement('menuitem');
        newItem.setAttribute("label", this.searchEngineTitles[i]);
        newItem.setAttribute("image", "chrome://dtv/content/images/search_icon_" + this.searchEngineNames[i] + ".png");
        newItem.setAttribute("class", "menuitem-iconic");
        newItem.setAttribute("oncommand", 
           "jsbridge.setSearchEngine('" + this.searchEngineNames[i] + "');");
        popup.appendChild(newItem);
    }
    var textbox = this.document.getElementById('search-textbox');
    popup.showPopup(textbox, -1, -1, "popup", "bottomleft", "topleft");
  },

  showChoiceDialog: function(id, title, description, defaultLabel, otherLabel) {
    var params = { "id": id, "title": title, "description" : description, 
        "defaultLabel": defaultLabel, "otherLabel": otherLabel, "out" : -1};
    this.window.openDialog("chrome://dtv/content/choice_dialog.xul",
            "dialog", "chrome,dependent,centerscreen,modal", params);
  },

  showThreeChoiceDialog: function(id, title, description, defaultLabel,
                        secondLabel, thirdLabel) {
    var params = { "id": id, "title": title, "description" : description, 
        "defaultLabel": defaultLabel, "secondLabel": secondLabel, 
        "thirdLabel": thirdLabel, "out" : -1};
    this.window.openDialog("chrome://dtv/content/three_choice_dialog.xul",
            "dialog", "chrome,dependent,centerscreen,modal", params);
  },

  showMessageBoxDialog: function(id, title, description) {
    var params = { "id": id, "title": title, "description" : description,
            "out" : -1};
    this.window.openDialog("chrome://dtv/content/message_box_dialog.xul",
            "dialog", "chrome,dependent,centerscreen,modal", params);
  },

  showHTTPAuthDialog: function(id, description, prefillUser, prefillPassword) {
    var params = {"id": id, "text" : description, "prefillUser": prefillUser,
        "prefillPassword": prefillPassword, "out" : null};
    this.window.openDialog("chrome://dtv/content/password.xul",
            "dialog", "chrome,dependent,centerscreen,modal", params);
  },

  showBugReportDialog: function(when, report) {
    var params = {"when" : when, "report": report};
    this.window.openDialog("chrome://dtv/content/bugreport.xul",
            "choice", "chrome,dependent,centerscreen,modal", params);
  },

  showTextEntryDialog: function(id, title, description, defaultLabel, 
                                otherLabel, prefillText) {
    var params = { "id": id, "title": title, "description" : description, 
        "defaultLabel": defaultLabel, "otherLabel": otherLabel, 
        "prefillText": prefillText, "out" : -1};
    this.window.openDialog("chrome://dtv/content/text_entry_dialog.xul",
            "dialog", "chrome,dependent,centerscreen,modal", params);
  },

  showSearchChannelDialog: function(id, channels, engines, defaultTerm, defaultStyle, defaultChannel, defaultEngine, defaultURL) {
    var params = { "id": id, "channels" : channels, "engines" : engines,
		   "defaultTerm": defaultTerm, "defaultStyle": defaultStyle,
		   "defaultChannel": defaultChannel, "defaultEngine": defaultEngine,
		   "defaultURL": defaultURL, "Out" : -1};
    this.window.openDialog("chrome://dtv/content/searchchannel.xul",
            "dialog", "chrome,dependent,centerscreen,modal", params);
  },

  setCollapsed: function(id, value) {
    var elt = this.document.getElementById(id);
    elt.setAttribute("collapsed", value);
  },

  setActive: function(id, active) {
    var elt = this.document.getElementById(id);
    if(active) elt.className = id;
    else elt.className = id + "-inactive";
  },

  showVideoDisplay: function() {
    this.setCollapsed("video-box", "false");
    this.setCollapsed("mainDisplay", "true");
    this.setActive("bottom-buttons-previous", true);
    this.setActive("bottom-buttons-stop", true);
    this.setActive("bottom-buttons-play", true);
    this.setActive("bottom-buttons-fullscreen", true);
    this.setActive("bottom-buttons-next", true);
    this.setActive("progress-slider", true);
  },

  hideVideoDisplay: function() {
    this.setCollapsed("video-box", "true");
    this.setCollapsed("mainDisplay", "false");
    this.setActive("bottom-buttons-previous", false);
    this.setActive("bottom-buttons-stop", false);
    this.setActive("bottom-buttons-play", false);
    this.setActive("bottom-buttons-fullscreen", false);
    this.setActive("bottom-buttons-next", false);
    this.setActive("progress-slider", false);
  },

  positionVolumeSlider: function(volume) {
    var left = 25;
    var right= 98;
    var position = left + (right-left) * volume;
    position = Math.min(right, Math.max(left, position));
    this.document.getElementById("knob").left = position;
  },

  hideForFullscreen: Array('channelsDisplay', 'mainSplitter',
        'resizer-left', 'bottom-left', 'resizer-bottom-right'),
  showForFullscreen: Array('bottom-left-blank', 'bottom-right-blank'),

  toggleFullscreen: function() {
    if(this.window.fullScreen) this.leaveFullscreen();
    else this.enterFullscreen();
  },

  enterFullscreen: function() {
    if(this.window.fullScreen) return;
    this.window.fullScreen = true;