/*
 *
 * jqTransform
 * by mathieu vilaplana mvilaplana@dfc-e.com
 * Designer ghyslain armand garmand@dfc-e.com
 *
 *
 * Version 1.0 25.09.08
 * Version 1.1 06.08.09
 * Add event click on Checkbox and Radio
 * Auto calculate the size of a select element
 * Can now, disabled the elements
 * Correct bug in ff if click on select (overflow=hidden)
 * No need any more preloading !!
 * 
 ******************************************** */
 
(function($){
  var defaultOptions = {preloadImg:true};
  var jqTransformImgPreloaded = false;

  var jqTransformPreloadHoverFocusImg = function(strImgUrl) {
    //guillemets to remove for ie
    strImgUrl = strImgUrl.replace(/^url\((.*)\)/,'$1').replace(/^\"(.*)\"$/,'$1');
    var imgHover = new Image();
    imgHover.src = strImgUrl.replace(/\.([a-zA-Z]*)$/,'-hover.$1');
    var imgFocus = new Image();
    imgFocus.src = strImgUrl.replace(/\.([a-zA-Z]*)$/,'-focus.$1');       
  };

  
  /***************************
    Labels
  ***************************/
  var jqTransformGetLabel = function(objfield){
    var selfForm = $(objfield.get(0).form);
    var oLabel = objfield.next();
    if(!oLabel.is('label')) {
      oLabel = objfield.prev();
      if(oLabel.is('label')){
        var inputname = objfield.attr('id');
        if(inputname){
          oLabel = selfForm.find('label[for="'+inputname+'"]');
        } 
      }
    }
    if(oLabel.is('label')){return oLabel.css('cursor','pointer');}
    return false;
  };
  
  /* Hide all open selects */
  var jqTransformHideSelect = function(oTarget){
    var ulVisible = $('.jqTransformSelectWrapper ul:visible');
    ulVisible.each(function(){
      var oSelect = $(this).parents(".jqTransformSelectWrapper:first").find("select").get(0);
      //do not hide if click on the label object associated to the select
      if( !(oTarget && oSelect.oLabel && oSelect.oLabel.get(0) == oTarget.get(0)) ){$(this).trigger('collapse');}
    });
  };
  /* Check for an external click */
  var jqTransformCheckExternalClick = function(event) {
    if ($(event.target).parents('.jqTransformSelectWrapper').length === 0) { jqTransformHideSelect($(event.target)); }
  };

  /* Apply document listener */
  var jqTransformAddDocumentListener = function (){
    $(document).mousedown(jqTransformCheckExternalClick);
  };  
      
  /* Add a new handler for the reset action */
  var jqTransformReset = function(f){
    var sel;
    $('.jqTransformSelectWrapper select', f).each(function(){sel = (this.selectedIndex<0) ? 0 : this.selectedIndex; $('ul', $(this).parent()).each(function(){$('a:eq('+ sel +')', this).click();});});
    $('a.jqTransformCheckbox, a.jqTransformRadio', f).removeClass('jqTransformChecked');
    $('input:checkbox, input:radio', f).each(function(){if(this.checked){$('a', $(this).parent()).addClass('jqTransformChecked');}});
  };

  /***************************
    Buttons
   ***************************/
  $.fn.jqTransInputButton = function(){
    return this.each(function(){
      var newBtn = $('<button id="'+ this.id +'" name="'+ this.name +'" type="'+ this.type +'" class="'+ this.className +' jqTransformButton"><span><span>'+ $(this).attr('value') +'</span></span>')
        .hover(function(){newBtn.addClass('jqTransformButton_hover');},function(){newBtn.removeClass('jqTransformButton_hover')})
        .mousedown(function(){newBtn.addClass('jqTransformButton_click')})
        .mouseup(function(){newBtn.removeClass('jqTransformButton_click')})
      ;
      $(this).replaceWith(newBtn);
    });
  };
  
  /***************************
    Text Fields 
   ***************************/
  $.fn.jqTransInputText = function(){
    return this.each(function(){
      var $input = $(this);
  
      if($input.hasClass('jqtranformdone') || !$input.is('input')) {return;}
      $input.addClass('jqtranformdone');
  
      var oLabel = jqTransformGetLabel($(this));
      oLabel && oLabel.bind('click',function(){$input.focus();});
  
      var inputSize=$input.width();
      if($input.attr('size')){
        inputSize = $input.attr('size')*10;
        $input.css('width',inputSize);
      }
      
      $input.addClass("jqTransformInput").wrap('<div class="jqTransformInputWrapper"><div class="jqTransformInputInner"><div></div></div></div>');
      var $wrapper = $input.parent().parent().parent();
      $wrapper.css("width", inputSize+10);
      $input
        .focus(function(){$wrapper.addClass("jqTransformInputWrapper_focus");})
        .blur(function(){$wrapper.removeClass("jqTransformInputWrapper_focus");})
        .hover(function(){$wrapper.addClass("jqTransformInputWrapper_hover");},function(){$wrapper.removeClass("jqTransformInputWrapper_hover");})
      ;
  
      /* If this is safari we need to add an extra class */
      $.browser.safari && $wrapper.addClass('jqTransformSafari');
      $.browser.safari && $input.css('width',$wrapper.width()+16);
      this.wrapper = $wrapper;
      
    });
  };
  
  /***************************
    Check Boxes 
   ***************************/ 
  $.fn.jqTransCheckBox = function(){
    return this.each(function(){
      if($(this).hasClass('jqTransformHidden')) {return;}

      var $input = $(this);
      var inputSelf = this;

      //set the click on the label
      var oLabel=jqTransformGetLabel($input);
      oLabel && oLabel.click(function(){aLink.trigger('click');});
      
      var aLink = $('<a href="#" class="jqTransformCheckbox"></a>');
      //wrap and add the link
      $input.addClass('jqTransformHidden').wrap('<span class="jqTransformCheckboxWrapper"></span>').parent().prepend(aLink);
      //on change, change the class of the link
      $input.change(function(){
        this.checked && aLink.addClass('jqTransformChecked') || aLink.removeClass('jqTransformChecked');
        return true;
      });
      // Click Handler, trigger the click and change event on the input
      aLink.click(function(){
        //do nothing if the original input is disabled
        if($input.attr('disabled')){return false;}
        //trigger the envents on the input object
        $input.trigger('click').trigger("change");  
        return false;
      });

      // set the default state
      this.checked && aLink.addClass('jqTransformChecked');   
    });
  };
  /***************************
    Radio Buttons 
   ***************************/ 
  $.fn.jqTransRadio = function(){
    return this.each(function(){
      if($(this).hasClass('jqTransformHidden')) {return;}

      var $input = $(this);
      var inputSelf = this;
        
      oLabel = jqTransformGetLabel($input);
      oLabel && oLabel.click(function(){aLink.trigger('click');});
  
      var aLink = $('<a href="#" class="jqTransformRadio" rel="'+ this.name +'"></a>');
      $input.addClass('jqTransformHidden').wrap('<span class="jqTransformRadioWrapper"></span>').parent().prepend(aLink);
      
      $input.change(function(){
        inputSelf.checked && aLink.addClass('jqTransformChecked') || aLink.removeClass('jqTransformChecked');
        return true;
      });
      // Click Handler
      aLink.click(function(){
        if($input.attr('disabled')){return false;}
        $input.trigger('click').trigger('change');
  
        // uncheck all others of same name input radio elements
        $('input[name="'+$input.attr('name')+'"]',inputSelf.form).not($input).each(function(){
          $(this).attr('type')=='radio' && $(this).trigger('change');
        });
  
        return false;         
      });
      // set the default state
      inputSelf.checked && aLink.addClass('jqTransformChecked');
    });
  };
  
  /***************************
    TextArea 
   ***************************/ 
  $.fn.jqTransTextarea = function(){
    return this.each(function(){
      var textarea = $(this);
  
      if(textarea.hasClass('jqtransformdone')) {return;}
      textarea.addClass('jqtransformdone');
  
      oLabel = jqTransformGetLabel(textarea);
      oLabel && oLabel.click(function(){textarea.focus();});
      
      var strTable = '<table cellspacing="0" cellpadding="0" border="0" class="jqTransformTextarea">';
      strTable +='<tr><td id="jqTransformTextarea-tl"></td><td id="jqTransformTextarea-tm"></td><td id="jqTransformTextarea-tr"></td></tr>';
      strTable +='<tr><td id="jqTransformTextarea-ml">&nbsp;</td><td id="jqTransformTextarea-mm"><div></div></td><td id="jqTransformTextarea-mr">&nbsp;</td></tr>'; 
      strTable +='<tr><td id="jqTransformTextarea-bl"></td><td id="jqTransformTextarea-bm"></td><td id="jqTransformTextarea-br"></td></tr>';
      strTable +='</table>';          
      var oTable = $(strTable)
          .insertAfter(textarea)
          .hover(function(){
            !oTable.hasClass('jqTransformTextarea-focus') && oTable.addClass('jqTransformTextarea-hover');
          },function(){
            oTable.removeClass('jqTransformTextarea-hover');          
          })
        ;
        
      textarea
        .focus(function(){oTable.removeClass('jqTransformTextarea-hover').addClass('jqTransformTextarea-focus');})
        .blur(function(){oTable.removeClass('jqTransformTextarea-focus');})
        .appendTo($('#jqTransformTextarea-mm div',oTable))
      ;
      this.oTable = oTable;
      if($.browser.safari){
        $('#jqTransformTextarea-mm',oTable)
          .addClass('jqTransformSafariTextarea')
          .find('div')
            .css('height',textarea.height())
            .css('width',textarea.width())
        ;
      }
    });
  };
  
  /***************************
    Select 
   ***************************/ 
  $.fn.jqTransSelect = function(){
    if (this.length) {
      this.each(function(index){
        var $select = $(this);

        if($select.hasClass('jqTransformHidden') || $select.attr('multiple')) return;

        var oLabel  =  jqTransformGetLabel($select);
        /* First thing we do is Wrap it */
        var $wrapper = $select
          .addClass('jqTransformHidden')
          .wrap('<div class="jqTransformSelectWrapper"></div>')
          .parent()
          .css({zIndex: 99-index})
        ;
        
        /* Now add the html for the select */
        $wrapper.prepend('<div><span></span><a href="#" class="jqTransformSelectOpen"></a></div><ul></ul>');
        var $ul = $('ul', $wrapper).css('width',$select.width()).hide();
        /* Now we add the options */
        $('option', this).each(function(i){
          var oLi = $('<li><a href="#" index="'+ i +'">'+ $(this).html() +'</a></li>');
          $ul.append(oLi);
        });
        
        /* Call instead of $ul.hide() to return state to normal */
        $ul.bind('collapse', function(){
          $(this).hide();
          var $clone = $wrapper.data('clone');
          if ($clone) {
            $wrapper.attr('style', $clone.attr('style'));
            $clone.hide();
            $wrapper.insertAfter($clone);
          }
        });

        /* Add click handler to the a */
        $ul.find('a').click(function(){
          $('a.selected', $wrapper).removeClass('selected');
          $(this).addClass('selected'); 
          var prevIndex = $select[0].selectedIndex;
          $select[0].selectedIndex = $(this).attr('index');
          /* Fire the onchange event */
          if(prevIndex != $select[0].selectedIndex)
            $select.change();
          $('span:eq(0)', $wrapper).html($(this).html());
          $ul.trigger('collapse');
          return false;
        });

        /* Set the default */
        $('a:eq('+ this.selectedIndex +')', $ul).click();
        var oLinkOpen = $("a.jqTransformSelectOpen",$wrapper)
        $('span:first', $wrapper).click(function(){oLinkOpen.trigger('click');});
        oLabel && oLabel.click(function(){oLinkOpen.trigger('click');});
        this.oLabel = oLabel;
        
        /* Apply the click handler to the Open */
        oLinkOpen
          .click(function(){

            var already_open = $ul.is(':visible');
            jqTransformHideSelect(); // Toggle closed or close other selects.

            if( !already_open ) {
            
              if($select.attr('disabled')){return false;}

              // Calculate width every time to adjust for any DOM changes
              $ul.css({width: ($wrapper.width() - oLinkOpen.width() - 1)+'px'});
              $ul.slideToggle('fast', function(){         
                var offSet = ($('a.selected', $ul).offset().top - $ul.offset().top);
                $ul.animate({scrollTop: offSet});
              });
            
              if (!$wrapper.data('clone')) {
                var $clone = $wrapper.clone()
                  .hide()
                  .insertBefore($wrapper);
                $wrapper.data('clone',$clone);
              } else {
                var $clone = $wrapper.data('clone');
              }
          
              $clone.show();
              $wrapper
                .appendTo('body')
                .css({
                  position: 'absolute',
                  top: $clone.offset().top,
                  left: $clone.offset().left,
                  width: $clone.width()+'px',
                  height: $clone.height()+'px'
                })
              ;
            } 
            return false;
          })
        ;

        // Set the new width
        var iSelectWidth = $select.outerWidth();
        var oSpan = $('span:first',$wrapper);
        var newWidth = (iSelectWidth > oSpan.innerWidth())?iSelectWidth+oLinkOpen.outerWidth():$wrapper.width();
        $wrapper.css({width: newWidth});
      
        // Calculate the height if necessary, less elements that the default height
        //show the ul to calculate the block, if ul is not displayed li height value is 0
        $ul.css({display:'block',visibility:'hidden'});
        if ($ul.is(':hidden')) {
          var hidden_containers = $($ul.parentsUntil(':visible').get().reverse());
          hidden_containers.each(function(){
            var $this = $(this)
            if ($this.is(':hidden')) {
              $this.data('style', $this.attr('style') || false);
              $this.css({
                position: 'absolute',
                left: '-10000px',
                display: 'block'
              });
            }
          });
        }
        var iSelectHeight = ($('li',$ul).length)*($('li:first',$ul).height());//+1 else bug ff
        (iSelectHeight < $ul.height()) && $ul.css({height:iSelectHeight,'overflow':'hidden'});//hidden else bug with ff
        $ul.css({display:'none',visibility:'visible'});
        if (hidden_containers) hidden_containers.each(function(){
          var $this = $(this);
          if (typeof $this.data('style') != 'undefined')
            $this.attr('style', $this.data('style') || '');
        });
        
      });

      jqTransformAddDocumentListener();
    }
    return this;
  };

  $.fn.jqTransform = function(options){
    var opt = $.extend({},defaultOptions,options);
    
    /* each form */
    return this.each(function(){
      var selfForm = $(this);
      if(selfForm.hasClass('jqtransformdone')) {return;}
      selfForm.addClass('jqtransformdone');
      
    $('input:submit, input:reset, input[type="button"]', this).jqTransInputButton();
      $('input:text, input:password', this).jqTransInputText();
      $('input:checkbox', this).jqTransCheckBox();
      $('input:radio', this).jqTransRadio();
     $('textarea', this).jqTransTextarea();
      $('select', this).jqTransSelect()

      selfForm.bind('reset',function(){var action = function(){jqTransformReset(this);}; window.setTimeout(action, 10);});
      
    }); /* End Form each */
        
  };/* End the Plugin */

})(jQuery);