//    Firefox extension enabling the use of Gmail chat across multiple tabs.
//    Copyright (C) 2007  Jack Wootton <http://www.gmailxchat.com/>.
//
//    This program is free software: you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation, either version 3 of the License, or
//    (at your option) any later version.
//
//    This program is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with this program.  If not, see <http://www.gnu.org/licenses/>.



function TabMediator() 
{
  this._tab = null;
  this._remoteChats = [];
  
  
  
  this.setTab = function(aTab)
  {
    this._tab = aTab;
  }
  
  
  
  this.getTab = function()
  {
    return this._tab;
  }
  
  
  
  this.addRemoteChat = function(aRemoteChat)
  {
    var i = this._remoteChats.length;
    this._remoteChats[i] = aRemoteChat;
  }
  
  
  
  this.removeRemoteChat = function(aRemoteChat)
  {
    var index = this._remoteChats.indexOf(aRemoteChat);
    
    var remoteChatArray = this._remoteChats.splice(index,1);
    
    for (var i = 0; i < remoteChatArray.length; i++)
      remoteChatArray[i] = null;
  }
  
  
  
  this.isTabRegistered = function(aXulTab)
  {
    return this._tab.usesXulTab(aXulTab);
  }
  
  
  this.alreadyDisplaysChat = function(aChatMediator)
  {
    var isDuplicate = false;
    
    for (var i = 0; i < this._remoteChats.length; i++)
    {
      isDuplicate = this._remoteChats[i].usesChatMediator(aChatMediator);
      
      if (isDuplicate)
        return true;
    }
    
    return false;
  }
  
  
  
  this.reloadRemoteChats = function(aNewDocument)
  {
    for (var i=0; i < this._remoteChats.length; i++)
      this._remoteChats[i].reload(aNewDocument);
  }
  
  
  
  this.getRemoteChatPosition = function()
  {
    return this._tab.getXPosition();
  }
  
  
  
  this.resetRemoteChatPositions = function()
  {   
    for (var i = 0; i < this._remoteChats[i].length; i++)
    {
      if (this._remoteChats[i].isOpen())
        this._remoteChats[i].reloadXPosition( this._tab.getXPosition() );
    }
  }
  
  
  
  this.hideRemoteChat = function()
  {
    this._tab.notifyRemoteChatRemoved();
  }
  
  
  
  this.removeAssociatedRemoteChats = function()
  {
    for (var i = 0; i < this._remoteChats.length; i++)
      this._remoteChats[i].expunge();
  }
  
  
  
  this.expunge = function()
  {
    if (this._remoteChats != null || this._remoteChats.length > 0)
      throw Exceptions.INTERNAL_ERROR;
    
    if (this._tab != null)
    {
      this.tab.expunge();
      this._tab = null;
    }
  }
}