var _prevExpandedUL = null;
var _prevExpandedATag;

function openHistoryElement(historyURL)
{
    window.views.WebView.showNormalPage();
    window.ViewStack.switchView( "WebView","BookmarkHistoryView");

    // Laod a page to chrome view
    window.views.WebView.loadUrlToCurrentPage(historyURL);
  //  views.WebView.gesturesEnabled = true;

}

function updateHistoryList()
{
  var snippetId = document.getElementById('HistoryViewId');
  snippetId.innerHTML = "";

  try
    {
        //clearHistoryList();
        //Get historys data from database
        var folderNamesJSN = window.bookmarksManager.getHistoryFoldersJSON();
        var folderObjects = eval('(' + folderNamesJSN + ')');
        var mainUL = document.createElement('ul');

        mainUL.id =  'folderMenu';
        var subUlId;
        for (i=0; i < folderObjects.length; i++)
        {
            subUlId = "subUlId_"+i;

            var mainLI  = document.createElement('li');
            var aTag  = document.createElement('a');
            var subUL = document.createElement('ul');

            // Expand First Item & Hide all the other Items
            if (i > 0)
            {
                aTag.className = 'closed';
                subUL.style.display = 'none';
            }
            else
            {
                  aTag.className = 'opened';
                subUL.style.display = 'block';
                _prevExpandedATag = aTag;
                _prevExpandedUL = subUL;
            }

            aTag.href = "#";
            aTag.innerHTML = '<div></div>'+folderObjects[i];
            aTag.onclick = eval('( function(){ toggleHistoryFolder(this, "#'+subUlId+'"); } )');


            mainLI.appendChild(aTag);

            var folderDataJSN = window.bookmarksManager.getHistoryFoldersJSON(folderObjects[i]);
            var folderDataObject = eval('(' + folderDataJSN + ')');

            subUL.id = subUlId;


            for (j=folderDataObject.length-1; j>=0; j--)
            {
              var recenturl = folderDataObject[j].urlVal;

              var recenttitle = folderDataObject[j].titleVal;
              var recenttime = folderDataObject[j].dateVal+'<br/>'+folderDataObject[j].timeVal;

              //<img src="'+bmfavicon+'">
                var subLI = document.createElement('li');
                subLI.innerHTML = '<a href="#" onclick="openHistoryElement(\''+folderDataObject[j].urlVal+'\');">'+
                                  '<div class="HitsoryElement">'+
                                  '<span class="aTime">'+recenttime+'</span>'+
                                  '<span class="aTitle">'+recenttitle+'</span>'+
                                  '<br/>'+
                                  '<span class="aUrl">'+recenturl+'</span></div>';
                subUL.appendChild(subLI);
            }

            mainLI.appendChild(subUL);
            mainUL.appendChild(mainLI);

        }
        var snippetId = document.getElementById('HistoryViewId');
        snippetId.innerHTML = "";
        snippetId.appendChild(mainUL);

    } catch(E) { alert(E); }

}

function toggleHistoryFolder(aTag, subUlId){
  try{
      aTag.className = (aTag.className == 'opened') ? 'closed' : 'opened';
      $(subUlId).toggle();
      //$(subUlId).toggle("blind", {}, 175);

      if (_prevExpandedUL != null && _prevExpandedUL != subUlId && _prevExpandedATag.className == 'opened'){
        collapseFolder(_prevExpandedATag,_prevExpandedUL);
      }
      _prevExpandedUL   = subUlId;
      _prevExpandedATag = aTag;

  }  catch(E) { alert(E); }
}

function collapseFolder(aTag,subUlId)
{
try{
      aTag.className = (aTag.className == 'opened') ? 'closed' : 'opened';
      //$(subUlId).toggle("blind", {}, 175);
      $(subUlId).toggle();

    }  catch(E) { alert(E); }
}

function confirmCleartHistory () {

 var filderList = document.getElementById('folderMenu');

 if (filderList.childNodes.length > 0 ) {
    if (confirm("Are you sure you want to permanently delete your history?")){
        window.bookmarksManager.clearHistory();
        window.views.WebView.reload();
    }
 }
}