/* EventCalendar. Copyright (C) 2005, Alex Tingle.  $Revision: 65 $

 * This file is licensed under the GNU GPL. See LICENSE file for details.

 */

/** class ec3_Popup */

function ec3_Popup()

{

  WindowOnload( function()

  {

    var calendars=ec3.get_calendars();

    if(!calendars)

      return;

    // Pre-load images.

    ec3.imgShadow0=new Image(8,32);

    ec3.imgShadow1=new Image(500,16);

    ec3.imgShadow2=new Image(8,32);

    ec3.imgShadow0.src=ec3.myfiles+'/shadow0.png';

    ec3.imgShadow1.src=ec3.myfiles+'/shadow1.png';

    ec3.imgShadow2.src=ec3.myfiles+'/shadow2.png';

    // Generate the popup (but keep it hidden).

    var table,tbody,tr,td;

    ec3_Popup.popup=document.createElement('table');

    ec3_Popup.popup.style.display='none';

    ec3_Popup.popup.id='ec3_popup';

    ec3_Popup.popup.className='ec3_popup';

    tbody=ec3_Popup.popup.appendChild( document.createElement('tbody') );

    tr=tbody.appendChild( document.createElement('tr') );

    td=tr.appendChild( document.createElement('td') );

    td.id='ec3_shadow0';

    td.rowSpan=2;

    td.appendChild( document.createElement('div') );

    td=tr.appendChild( document.createElement('td') );

    ec3_Popup.contents=td.appendChild( document.createElement('table') );

    ec3_Popup.contents.style.width=500;

    td=tr.appendChild( document.createElement('td') );

    td.id='ec3_shadow2';

    td.rowSpan=2;

    td.appendChild( document.createElement('div') );

    tr=tbody.appendChild( document.createElement('tr') );

    td=tr.appendChild( document.createElement('td') );

    td.id='ec3_shadow1';

    document.body.appendChild(ec3_Popup.popup);

    // Add event handlers to the calendars.

    for(var i=0; i<calendars.length; i++)

      add_tbody( ec3.get_child_by_tag_name(calendars[i],'tbody') );

  } );

  function add_tbody(tbody)

  {

    if(!tbody)

      return;

    var anchor_list=tbody.getElementsByTagName('a');

    if(!anchor_list)

      return;

    for(var i=0; i<anchor_list.length; i++)

    {

      var a=anchor_list[i];

      var td=a.parentNode;

      // 'title' might have become 'nicetitle' if that plugin is being run.

      var titleattr=a.getAttribute('nicetitle');

      if(!titleattr)

          titleattr=a.getAttribute('title');

      if(titleattr && td.nodeName=='TD' && td.className!='pad')

      {

        td.setAttribute('ec3_title',titleattr);

        a.removeAttribute('nicetitle');

        a.removeAttribute('title');

        addEvent(td,'mouseover',show);

        addEvent(td,'mouseout',hide);

        addEvent(td,'focus',show);

        addEvent(td,'blur',hide);

      }

    }

  }

  ec3_Popup.add_tbody=add_tbody;

  function show(e)

  {

    var n;

    if(e.currentTarget)

        n=e.currentTarget; // Mozilla/Safari/w3c

    else if(window.event)

        n=window.event.srcElement; // IE

    else

        return;

    // Find the TD element and the calendar node.

    // (IE will sometimes randomly give us a child instead).

    var td,cal;

    while(1)

    {

      if(!n || n==document.body)

      {

        return;

      }

      else if(n.tagName=='TABLE')

      {

        cal=n;

        break;

      }

      else if(n.tagName=='TD')

      {

        td=n;

      }

      n=n.parentNode;

    }

    var ec3_title=td.getAttribute('ec3_title');

    if(typeof ec3_title == 'undefined')

      return;

    if(ec3_Popup.just_hidden)

       ec3_Popup.popup.style.display = "block";

    else

       ec3_Popup.show_timer=setTimeout(

         function(){ec3_Popup.popup.style.display = "block";},

         600

       );

    ec3_Popup.contents.style.width=''+(cal.offsetWidth-2)+'px';

    ec3_Popup.popup.style.top=''+(findPosY(cal)+cal.offsetHeight)+'px';

    ec3_Popup.popup.style.left=''+(findPosX(cal)-8)+'px';

    var tbody=ec3.get_child_by_tag_name(ec3_Popup.contents,'tbody');

    if(tbody)

      ec3_Popup.contents.removeChild(tbody);

    tbody=ec3_Popup.contents.appendChild(document.createElement('tbody'));

    var titles=ec3_title.split(', ');

    for(var i=0; i<titles.length; i++)

    {

      tr=tbody.appendChild(document.createElement('tr'));

      td=tr.appendChild(document.createElement('td'));

      td.appendChild(document.createTextNode(titles[i]));

      if(titles[i].indexOf('@')!=-1)

        td.className='eventday';

    }

    // Let's put this event to a halt before it starts messing things up

    window.event? window.event.cancelBubble=true: e.stopPropagation();

  }

  function hide()

  {

    if(ec3_Popup.show_timer)

      clearTimeout(ec3_Popup.show_timer);

    if(ec3_Popup.popup.style.display!='none')

    {

     ec3_Popup.just_hidden=1;

     ec3_Popup.hide_timer=setTimeout(function(){ec3_Popup.just_hidden=0;},900);

    }

    ec3_Popup.popup.style.display='none';

  }

  //=====================================================================

  // Event Listener

  // by Scott Andrew - http://scottandrew.com

  // edited by Mark Wubben, <useCapture> is now set to false

  //=====================================================================

  function addEvent(obj, evType, fn){

    if(obj.addEventListener){

      obj.addEventListener(evType, fn, false); 

      return true;

    } else if (obj.attachEvent){

      var r = obj.attachEvent('on'+evType, fn);

      return r;

    } else {

      return false;

    }

  }

  //=====================================================================

  // From http://www.quirksmode.org/

  //=====================================================================

  function findPosX(obj)

  {

    var curleft = 0;

    if (obj.offsetParent)

    {

      while(1)

      {

        curleft += obj.offsetLeft;

	if(!obj.offsetParent) break;

        obj = obj.offsetParent;

      }

    }

    else if (obj.x)

      curleft += obj.x;

    return curleft;

  }

  function findPosY(obj)

  {

    var curtop = 0;

    if (obj.offsetParent)

    {

      while(1)

      {

        curtop += obj.offsetTop;

	if(!obj.offsetParent) break;

        obj = obj.offsetParent;

      }

    }

    else if (obj.y)

      curtop += obj.y;

    return curtop;

  }

} // end namespace ec3_Popup

// Export public functions from ec3_Popup namespace.

ec3_Popup();