var rcube_webmail_client;

function rcube_webmail()
  {
  this.env = new Object();
  this.buttons = new Object();
  this.gui_objects = new Object();
  this.commands = new Object();
  this.selection = new Array();

  // create public reference to myself
  rcube_webmail_client = this;
  this.ref = 'rcube_webmail_client';
 
  // webmail client settings
  this.dblclick_time = 600;
  this.message_time = 5000;
  this.request_timeout = 120000;
  this.mbox_expression = new RegExp('[^0-9a-z\-_]', 'gi');
  this.env.blank_img = 'skins/default/images/blank.gif';
  
  // mimetypes supported by the browser (default settings)
  this.mimetypes = new Array('text/plain', 'text/html', 'text/xml',
                             'image/jpeg', 'image/gif', 'image/png',
                             'application/x-javascript', 'application/pdf',
                             'application/x-shockwave-flash');


  // set environment variable
  this.set_env = function(name, value)
    {
    //if (!this.busy)
      this.env[name] = value;    
    };




  // register a specific gui object
  this.gui_object = function(name, id)
    {
    this.gui_objects[name] = id;
    };


  // initialize webmail client
  this.init = function()
    {
    this.task = this.env.task;
    
    // check browser
    if (!bw.dom || !bw.xmlhttp_test())
      {
      location.href = this.env.comm_path+'&_action=error&_code=0x199';
      return;
      }
    
    // find all registered gui objects
    for (var n in this.gui_objects)
      this.gui_objects[n] = rcube_find_object(this.gui_objects[n]);
      
    // tell parent window that this frame is loaded
    if (this.env.framed && parent.rcmail && parent.rcmail.set_busy)
      parent.rcmail.set_busy(false);

    // enable general commands
    this.enable_command('logout', 'mail', 'addressbook', 'settings', true);
    
    
    // enable basic commands
    this.enable_command('logout', true);

    // disable browser's contextmenus
    //document.oncontextmenu = function(){ return false; }

    // flag object as complete
    this.loaded = true;
          
    // show message
    if (this.pending_message)
      this.display_message(this.pending_message[0], this.pending_message[1]);
    };


 
 





  /*********************************************************/
  /*********       client command interface        *********/
  /*********************************************************/



  // set command enabled or disabled
  this.enable_command = function()
    {
    var args = this.enable_command.arguments;
    if(!args.length) return -1;

    var command;
    var enable = args[args.length-1];
    
    for(var n=0; n<args.length-1; n++)
      {
      command = args[n];
      this.commands[command] = enable;
      this.set_button(command, (enable ? 'act' : 'pas'));
      }
    };


  // lock/unlock interface
  this.set_busy = function(a, message)
    {
    if (a && message)
      this.display_message('Loading...', 'loading', true);
    else if (!a && this.busy)
      this.hide_message();

    this.busy = a;
    //document.body.style.cursor = a ? 'wait' : 'default';
    
    if (this.gui_objects.editform)
      this.lock_form(this.gui_objects.editform, a);
      
    // clear pending timer
    if (this.request_timer)
      clearTimeout(this.request_timer);

    // set timer for requests
    if (a && this.request_timeout)
      this.request_timer = setTimeout(this.ref+'.request_timed_out()', this.request_timeout);
    };




  /*********************************************************/
  /*********           GUI functionality           *********/
  /*********************************************************/


  // eable/disable buttons for page shifting
  this.set_page_buttons = function()
    {
    this.enable_command('nextpage', (this.env.pagecount > this.env.current_page));
    this.enable_command('previouspage', (this.env.current_page > 1));
    }


  // set button to a specific state
  this.set_button = function(command, state)
    {
    var a_buttons = this.buttons[command];
    var button, obj;

    if(!a_buttons || !a_buttons.length)
      return;

    for(var n=0; n<a_buttons.length; n++)
      {
      button = a_buttons[n];
      obj = document.getElementById(button.id);

      // get default/passive setting of the button
      if (obj && button.type=='image' && !button.status)
        button.pas = obj._original_src ? obj._original_src : obj.src;
      else if (obj && !button.status)
        button.pas = String(obj.className);

      // set image according to button state
      if (obj && button.type=='image' && button[state])
        {
        button.status = state;        
        obj.src = button[state];
        }
      // set class name according to button state
      else if (obj && typeof(button[state])!='undefined')
        {
        button.status = state;        
        obj.className = button[state];        
        }
      // disable/enable input buttons
      if (obj && button.type=='input')
        {
        button.status = state;
        obj.disabled = !state;
        }
      }
    };






  // display a system message
  this.display_message = function(msg, type, hold)
    {
    if (!this.loaded)  // save message in order to display after page loaded
      {
      this.pending_message = new Array(msg, type);
      return true;
      }
    
    if (!this.gui_objects.message)
      return false;
      
    if (this.message_timer)
      clearTimeout(this.message_timer);
    
    var cont = msg;
    if (type)
      cont = '<div class="'+type+'">'+cont+'</div>';

    this.gui_objects.message._rcube = this;
    this.gui_objects.message.innerHTML = cont;
    this.gui_objects.message.style.display = 'block';
    
    if (type!='loading')
      this.gui_objects.message.onmousedown = function(){ this._rcube.hide_message(); return true; };
    
    if (!hold)
      this.message_timer = setTimeout(this.ref+'.hide_message()', this.message_time);
    };


  // make a message row disappear
  this.hide_message = function()
    {
    if (this.gui_objects.message)
      {
      this.gui_objects.message.style.display = 'none';
      this.gui_objects.message.onmousedown = null;
      }
    };


 
  // set all fields of a form disabled
  this.lock_form = function(form, lock)
    {
    if (!form || !form.elements)
      return;
    
    var type;
    for (var n=0; n<form.elements.length; n++)
      {
      type = form.elements[n];
      if (type=='hidden')
        continue;
        
      form.elements[n].disabled = lock;
      }
    };
    
  }  // end object rcube_webmail






// set onload handler
window.onload = function(e)
  {
  if (window.rcube_webmail_client)
    rcube_webmail_client.init();
  };