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ToolTip for MVC Web Application

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12 Dec 2011CPOL3 min read 49.8K   1.2K   19  
ToolTip for MVC Web Application using clutip a jquery plugin
/*
 * jQuery clueTip plugin
 * Version 1.0.7  (January 28, 2010)
 * @requires jQuery v1.3+
 *
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 */
 
/*
 *
 * Full list of options/settings can be found at the bottom of this file and at http://plugins.learningjquery.com/cluetip/
 *
 * Examples can be found at http://plugins.learningjquery.com/cluetip/demo/
 *
*/

;(function($) { 
  $.cluetip = {version: '1.0.6'};
  var $cluetip, $cluetipInner, $cluetipOuter, $cluetipTitle, $cluetipArrows, $cluetipWait, $dropShadow, imgCount;
  
  $.fn.cluetip = function(js, options) {
    if (typeof js == 'object') {
      options = js;
      js = null;
    }
    if (js == 'destroy') {
      return this.removeData('thisInfo').unbind('.cluetip');
    }
    return this.each(function(index) {
      var link = this, $this = $(this);
      
      // support metadata plugin (v1.0 and 2.0)
      var opts = $.extend(true, {}, $.fn.cluetip.defaults, options || {}, $.metadata ? $this.metadata() : $.meta ? $this.data() : {});

      // start out with no contents (for ajax activation)
      var cluetipContents = false;
      var cluezIndex = +opts.cluezIndex;
      $this.data('thisInfo', {title: link.title, zIndex: cluezIndex});
      var isActive = false, closeOnDelay = 0;

      // create the cluetip divs
      if (!$('#cluetip').length) {
        $(['<div id="cluetip">',
          '<div id="cluetip-outer">',
            '<h3 id="cluetip-title"></h3>',
            '<div id="cluetip-inner"></div>',
          '</div>',
          '<div id="cluetip-extra"></div>',
          '<div id="cluetip-arrows" class="cluetip-arrows"></div>',
        '</div>'].join(''))
        [insertionType](insertionElement).hide();
        
        $cluetip = $('#cluetip').css({position: 'absolute'});
        $cluetipOuter = $('#cluetip-outer').css({position: 'relative', zIndex: cluezIndex});
        $cluetipInner = $('#cluetip-inner');
        $cluetipTitle = $('#cluetip-title');        
        $cluetipArrows = $('#cluetip-arrows');
        $cluetipWait = $('<div id="cluetip-waitimage"></div>')
          .css({position: 'absolute'}).insertBefore($cluetip).hide();
      }
      var dropShadowSteps = (opts.dropShadow) ? +opts.dropShadowSteps : 0;
      if (!$dropShadow) {
        $dropShadow = $([]);
        for (var i=0; i < dropShadowSteps; i++) {
          $dropShadow = $dropShadow.add($('<div></div>').css({zIndex: cluezIndex-1, opacity:.1, top: 1+i, left: 1+i}));
        }
        $dropShadow.css({position: 'absolute', backgroundColor: '#000'})
        .prependTo($cluetip);
      }
      var tipAttribute = $this.attr(opts.attribute), ctClass = opts.cluetipClass;
      if (!tipAttribute && !opts.splitTitle && !js) {
        return true;
      }
      // if hideLocal is set to true, on DOM ready hide the local content that will be displayed in the clueTip
      if (opts.local && opts.localPrefix) {tipAttribute = opts.localPrefix + tipAttribute;}
      if (opts.local && opts.hideLocal) { $(tipAttribute + ':first').hide(); }
      var tOffset = parseInt(opts.topOffset, 10), lOffset = parseInt(opts.leftOffset, 10);
      // vertical measurement variables
      var tipHeight, wHeight,
          defHeight = isNaN(parseInt(opts.height, 10)) ? 'auto' : (/\D/g).test(opts.height) ? opts.height : opts.height + 'px';
      var sTop, linkTop, posY, tipY, mouseY, baseline;
      // horizontal measurement variables
      var tipInnerWidth = parseInt(opts.width, 10) || 275,
          tipWidth = tipInnerWidth + (parseInt($cluetip.css('paddingLeft'),10)||0) + (parseInt($cluetip.css('paddingRight'),10)||0) + dropShadowSteps,
          linkWidth = this.offsetWidth,
          linkLeft, posX, tipX, mouseX, winWidth;
            
      // parse the title
      var tipParts;
      var tipTitle = (opts.attribute != 'title') ? $this.attr(opts.titleAttribute) : '';
      if (opts.splitTitle) {
        if (tipTitle == undefined) {tipTitle = '';}
        tipParts = tipTitle.split(opts.splitTitle);
        tipTitle = tipParts.shift();
      }
      if (opts.escapeTitle) {
        tipTitle = tipTitle.replace(/&/g,'&amp;').replace(/>/g,'&gt;').replace(/</g,'&lt;');
      }
      
      var localContent;
      function returnFalse() { return false; }

/***************************************      
* ACTIVATION
****************************************/
    
//activate clueTip
    var activate = function(event) {
      if (!opts.onActivate($this)) {
        return false;
      }
      isActive = true;
      $cluetip.removeClass().css({width: tipInnerWidth});
      if (tipAttribute == $this.attr('href')) {
        $this.css('cursor', opts.cursor);
      }
      if (opts.hoverClass) {
        $this.addClass(opts.hoverClass);
      }
      linkTop = posY = $this.offset().top;
      linkLeft = $this.offset().left;
      mouseX = event.pageX;
      mouseY = event.pageY;
      if (link.tagName.toLowerCase() != 'area') {
        sTop = $(document).scrollTop();
        winWidth = $(window).width();
      }
// position clueTip horizontally
      if (opts.positionBy == 'fixed') {
        posX = linkWidth + linkLeft + lOffset;
        $cluetip.css({left: posX});
      } else {
        posX = (linkWidth > linkLeft && linkLeft > tipWidth)
          || linkLeft + linkWidth + tipWidth + lOffset > winWidth 
          ? linkLeft - tipWidth - lOffset 
          : linkWidth + linkLeft + lOffset;
        if (link.tagName.toLowerCase() == 'area' || opts.positionBy == 'mouse' || linkWidth + tipWidth > winWidth) { // position by mouse
          if (mouseX + 20 + tipWidth > winWidth) {  
            $cluetip.addClass(' cluetip-' + ctClass);
            posX = (mouseX - tipWidth - lOffset) >= 0 ? mouseX - tipWidth - lOffset - parseInt($cluetip.css('marginLeft'),10) + parseInt($cluetipInner.css('marginRight'),10) :  mouseX - (tipWidth/2);
          } else {
            posX = mouseX + lOffset;
          }
        }
        var pY = posX < 0 ? event.pageY + tOffset : event.pageY;
        $cluetip.css({
          left: (posX > 0 && opts.positionBy != 'bottomTop') ? posX : (mouseX + (tipWidth/2) > winWidth) ? winWidth/2 - tipWidth/2 : Math.max(mouseX - (tipWidth/2),0),
          zIndex: $this.data('thisInfo').zIndex
        });
        $cluetipArrows.css({zIndex: $this.data('thisInfo').zIndex+1});
      }
        wHeight = $(window).height();

/***************************************
* load a string from cluetip method's first argument
***************************************/
      if (js) {
        if (typeof js == 'function') {
          js = js.call(link);
        }
        $cluetipInner.html(js);
        cluetipShow(pY);
      }
/***************************************
* load the title attribute only (or user-selected attribute). 
* clueTip title is the string before the first delimiter
* subsequent delimiters place clueTip body text on separate lines
***************************************/

      else if (tipParts) {
        var tpl = tipParts.length;
        $cluetipInner.html(tpl ? tipParts[0] : '');
        if (tpl > 1) {
          for (var i=1; i < tpl; i++){
            $cluetipInner.append('<div class="split-body">' + tipParts[i] + '</div>');
          }          
        }
        cluetipShow(pY);
      }
/***************************************
* load external file via ajax          
***************************************/

      else if (!opts.local && tipAttribute.indexOf('#') !== 0) {
        if (/\.(jpe?g|tiff?|gif|png)$/i.test(tipAttribute)) {
          $cluetipInner.html('<img src="' + tipAttribute + '" alt="' + tipTitle + '" />');
          cluetipShow(pY);
        } else if (cluetipContents && opts.ajaxCache) {
          $cluetipInner.html(cluetipContents);
          cluetipShow(pY);
        } else {
          var optionBeforeSend = opts.ajaxSettings.beforeSend,
              optionError = opts.ajaxSettings.error,
              optionSuccess = opts.ajaxSettings.success,
              optionComplete = opts.ajaxSettings.complete;
          var ajaxSettings = {
            cache: false, // force requested page not to be cached by browser
            url: tipAttribute,
            beforeSend: function(xhr) {
              if (optionBeforeSend) {optionBeforeSend.call(link, xhr, $cluetip, $cluetipInner);}
              $cluetipOuter.children().empty();
              if (opts.waitImage) {
                $cluetipWait
                .css({top: mouseY+20, left: mouseX+20, zIndex: $this.data('thisInfo').zIndex-1})
                .show();
              }
            },
            error: function(xhr, textStatus) {
              if (isActive) {
                if (optionError) {
                  optionError.call(link, xhr, textStatus, $cluetip, $cluetipInner);
                } else {
                  $cluetipInner.html('<i>sorry, the contents could not be loaded</i>');  
                }
              }
            },
            success: function(data, textStatus) {       
              cluetipContents = opts.ajaxProcess.call(link, data);
              if (isActive) {
                if (optionSuccess) {optionSuccess.call(link, data, textStatus, $cluetip, $cluetipInner);}
                $cluetipInner.html(cluetipContents);
              }
            },
            complete: function(xhr, textStatus) {
              if (optionComplete) {optionComplete.call(link, xhr, textStatus, $cluetip, $cluetipInner);}
              var imgs = $cluetipInner[0].getElementsByTagName('img');
              imgCount = imgs.length;
              for (var i=0, l = imgs.length; i < l; i++) {
                if (imgs[i].complete) {
                  imgCount--;
                }
              }
              if (imgCount && !$.browser.opera) {
                $(imgs).bind('load error', function() {
                  imgCount--;
                  if (imgCount<1) {
                    $cluetipWait.hide();
                    if (isActive) { cluetipShow(pY); }
                  }
                }); 
              } else {
                $cluetipWait.hide();
                if (isActive) { cluetipShow(pY); }
              } 
            }
          };
          var ajaxMergedSettings = $.extend(true, {}, opts.ajaxSettings, ajaxSettings);
          
          $.ajax(ajaxMergedSettings);
        }

/***************************************
* load an element from the same page
***************************************/
      } else if (opts.local) {
        
        var $localContent = $(tipAttribute + (/#\S+$/.test(tipAttribute) ? '' : ':eq(' + index + ')')).clone(true).show();
        $cluetipInner.html($localContent);
        cluetipShow(pY);
      }
    };

// get dimensions and options for cluetip and prepare it to be shown
    var cluetipShow = function(bpY) {
      $cluetip.addClass('cluetip-' + ctClass);
      if (opts.truncate) { 
        var $truncloaded = $cluetipInner.text().slice(0,opts.truncate) + '...';
        $cluetipInner.html($truncloaded);
      }
      function doNothing() {}; //empty function
      tipTitle ? $cluetipTitle.show().html(tipTitle) : (opts.showTitle) ? $cluetipTitle.show().html('&nbsp;') : $cluetipTitle.hide();
      if (opts.sticky) {
        var $closeLink = $('<div id="cluetip-close"><a href="#">' + opts.closeText + '</a></div>');
        (opts.closePosition == 'bottom') ? $closeLink.appendTo($cluetipInner) : (opts.closePosition == 'title') ? $closeLink.prependTo($cluetipTitle) : $closeLink.prependTo($cluetipInner);
        $closeLink.bind('click.cluetip', function() {
          cluetipClose();
          return false;
        });
        if (opts.mouseOutClose) {
          $cluetip.bind('mouseleave.cluetip', function() {
            cluetipClose();
          });
        } else {
          $cluetip.unbind('mouseleave.cluetip');
        }
      }
// now that content is loaded, finish the positioning 
      var direction = '';
      $cluetipOuter.css({zIndex: $this.data('thisInfo').zIndex, overflow: defHeight == 'auto' ? 'visible' : 'auto', height: defHeight});
      tipHeight = defHeight == 'auto' ? Math.max($cluetip.outerHeight(),$cluetip.height()) : parseInt(defHeight,10);   
      tipY = posY;
      baseline = sTop + wHeight;
      if (opts.positionBy == 'fixed') {
        tipY = posY - opts.dropShadowSteps + tOffset;
      } else if ( (posX < mouseX && Math.max(posX, 0) + tipWidth > mouseX) || opts.positionBy == 'bottomTop') {
        if (posY + tipHeight + tOffset > baseline && mouseY - sTop > tipHeight + tOffset) { 
          tipY = mouseY - tipHeight - tOffset;
          direction = 'top';
        } else { 
          tipY = mouseY + tOffset;
          direction = 'bottom';
        }
      } else if ( posY + tipHeight + tOffset > baseline ) {
        tipY = (tipHeight >= wHeight) ? sTop : baseline - tipHeight - tOffset;
      } else if ($this.css('display') == 'block' || link.tagName.toLowerCase() == 'area' || opts.positionBy == "mouse") {
        tipY = bpY - tOffset;
      } else {
        tipY = posY - opts.dropShadowSteps;
      }
      if (direction == '') {
        posX < linkLeft ? direction = 'left' : direction = 'right';
      }
      $cluetip.css({top: tipY + 'px'}).removeClass().addClass('clue-' + direction + '-' + ctClass).addClass(' cluetip-' + ctClass);
      if (opts.arrows) { // set up arrow positioning to align with element
        var bgY = (posY - tipY - opts.dropShadowSteps);
        $cluetipArrows.css({top: (/(left|right)/.test(direction) && posX >=0 && bgY > 0) ? bgY + 'px' : /(left|right)/.test(direction) ? 0 : ''}).show();
      } else {
        $cluetipArrows.hide();
      }

// (first hide, then) ***SHOW THE CLUETIP***
      $dropShadow.hide();
      $cluetip.hide()[opts.fx.open](opts.fx.openSpeed || 0);
      if (opts.dropShadow) { $dropShadow.css({height: tipHeight, width: tipInnerWidth, zIndex: $this.data('thisInfo').zIndex-1}).show(); }
      if ($.fn.bgiframe) { $cluetip.bgiframe(); }
      // delayed close (not fully tested)
      if (opts.delayedClose > 0) {
        closeOnDelay = setTimeout(cluetipClose, opts.delayedClose);
      }
      // trigger the optional onShow function
      opts.onShow.call(link, $cluetip, $cluetipInner);
    };

/***************************************
   =INACTIVATION
-------------------------------------- */
    var inactivate = function(event) {
      isActive = false;
      $cluetipWait.hide();
      if (!opts.sticky || (/click|toggle/).test(opts.activation) ) {
        cluetipClose();
        clearTimeout(closeOnDelay);        
      }
      if (opts.hoverClass) {
        $this.removeClass(opts.hoverClass);
      }
    };
// close cluetip and reset some things
    var cluetipClose = function() {
      $cluetipOuter 
      .parent().hide().removeClass();
      opts.onHide.call(link, $cluetip, $cluetipInner);
      $this.removeClass('cluetip-clicked');
      if (tipTitle) {
        $this.attr(opts.titleAttribute, tipTitle);
      }
      $this.css('cursor','');
      if (opts.arrows) {
        $cluetipArrows.css({top: ''});
      }
    };

    $(document).bind('hideCluetip', function(e) {
      cluetipClose();
    });
/***************************************
   =BIND EVENTS
-------------------------------------- */
  // activate by click
      if ( (/click|toggle/).test(opts.activation) ) {
        $this.bind('click.cluetip', function(event) {
          if ($cluetip.is(':hidden') || !$this.is('.cluetip-clicked')) {
            activate(event);
            $('.cluetip-clicked').removeClass('cluetip-clicked');
            $this.addClass('cluetip-clicked');
          } else {
            inactivate(event);
          }
          this.blur();
          return false;
        });
  // activate by focus; inactivate by blur    
      } else if (opts.activation == 'focus') {
        $this.bind('focus.cluetip', function(event) {
          activate(event);
        });
        $this.bind('blur.cluetip', function(event) {
          inactivate(event);
        });
  // activate by hover
      } else {
        // clicking is returned false if clickThrough option is set to false
        $this[opts.clickThrough ? 'unbind' : 'bind']('click', returnFalse);
        //set up mouse tracking
        var mouseTracks = function(evt) {
          if (opts.tracking == true) {
            var trackX = posX - evt.pageX;
            var trackY = tipY ? tipY - evt.pageY : posY - evt.pageY;
            $this.bind('mousemove.cluetip', function(evt) {
              $cluetip.css({left: evt.pageX + trackX, top: evt.pageY + trackY });
            });
          }
        };
        if ($.fn.hoverIntent && opts.hoverIntent) {
          $this.hoverIntent({
            sensitivity: opts.hoverIntent.sensitivity,
            interval: opts.hoverIntent.interval,  
            over: function(event) {
              activate(event);
              mouseTracks(event);
            }, 
            timeout: opts.hoverIntent.timeout,  
            out: function(event) {inactivate(event); $this.unbind('mousemove.cluetip');}
          });           
        } else {
          $this.bind('mouseenter.cluetip', function(event) {
            activate(event);
            mouseTracks(event);
          })
          .bind('mouseleave.cluetip', function(event) {
            inactivate(event);
            $this.unbind('mousemove.cluetip');
          });
        }
        $this.bind('mouseover.cluetip', function(event) {
          $this.attr('title','');
        }).bind('mouseleave.cluetip', function(event) {
          $this.attr('title', $this.data('thisInfo').title);
        });
      }
    });
  };
  
/*
 * options for clueTip
 *
 * each one can be explicitly overridden by changing its value. 
 * for example: $.fn.cluetip.defaults.width = 200; 
 * would change the default width for all clueTips to 200. 
 *
 * each one can also be overridden by passing an options map to the cluetip method.
 * for example: $('a.example').cluetip({width: 200}); 
 * would change the default width to 200 for clueTips invoked by a link with class of "example"
 *
 */
  
  $.fn.cluetip.defaults = {  // set up default options
    width:            275,      // The width of the clueTip
    height:           'auto',   // The height of the clueTip
    cluezIndex:       97,       // Sets the z-index style property of the clueTip
    positionBy:       'auto',   // Sets the type of positioning: 'auto', 'mouse','bottomTop', 'fixed'
    topOffset:        15,       // Number of px to offset clueTip from top of invoking element
    leftOffset:       15,       // Number of px to offset clueTip from left of invoking element
    local:            false,    // Whether to use content from the same page for the clueTip's body
    localPrefix:      null,       // string to be prepended to the tip attribute if local is true
    hideLocal:        true,     // If local option is set to true, this determines whether local content
                                // to be shown in clueTip should be hidden at its original location
    attribute:        'rel',    // the attribute to be used for fetching the clueTip's body content
    titleAttribute:   'title',  // the attribute to be used for fetching the clueTip's title
    splitTitle:       '',       // A character used to split the title attribute into the clueTip title and divs
                                // within the clueTip body. more info below [6]
    escapeTitle:      false,    // whether to html escape the title attribute
    showTitle:        true,     // show title bar of the clueTip, even if title attribute not set
    cluetipClass:     'default',// class added to outermost clueTip div in the form of 'cluetip-' + clueTipClass.
    hoverClass:       '',       // class applied to the invoking element onmouseover and removed onmouseout
    waitImage:        true,     // whether to show a "loading" img, which is set in jquery.cluetip.css
    cursor:           'help',
    arrows:           false,    // if true, displays arrow on appropriate side of clueTip
    dropShadow:       true,     // set to false if you don't want the drop-shadow effect on the clueTip
    dropShadowSteps:  6,        // adjusts the size of the drop shadow
    sticky:           false,    // keep visible until manually closed
    mouseOutClose:    false,    // close when clueTip is moused out
    activation:       'hover',  // set to 'click' to force user to click to show clueTip
                                // set to 'focus' to show on focus of a form element and hide on blur
    clickThrough:     false,    // if true, and activation is not 'click', then clicking on link will take user to the link's href,
                                // even if href and tipAttribute are equal
    tracking:         false,    // if true, clueTip will track mouse movement (experimental)
    delayedClose:     0,        // close clueTip on a timed delay (experimental)
    closePosition:    'top',    // location of close text for sticky cluetips; can be 'top' or 'bottom' or 'title'
    closeText:        'Close',  // text (or HTML) to to be clicked to close sticky clueTips
    truncate:         0,        // number of characters to truncate clueTip's contents. if 0, no truncation occurs
    
    // effect and speed for opening clueTips
    fx: {             
                      open:       'show', // can be 'show' or 'slideDown' or 'fadeIn'
                      openSpeed:  ''
    },     

    // settings for when hoverIntent plugin is used             
    hoverIntent: {    
                      sensitivity:  3,
              			  interval:     50,
              			  timeout:      0
    },

    // short-circuit function to run just before clueTip is shown. 
    onActivate:       function(e) {return true;},
    // function to run just after clueTip is shown. 
    onShow:           function(ct, ci){},
    // function to run just after clueTip is hidden.
    onHide:           function(ct, ci){},
    // whether to cache results of ajax request to avoid unnecessary hits to server    
    ajaxCache:        true,  

    // process data retrieved via xhr before it's displayed
    ajaxProcess:      function(data) {
                        data = data.replace(/<(script|style|title)[^<]+<\/(script|style|title)>/gm, '').replace(/<(link|meta)[^>]+>/g,'');
                        return data;
    },                

    // can pass in standard $.ajax() parameters. Callback functions, such as beforeSend, 
    // will be queued first within the default callbacks. 
    // The only exception is error, which overrides the default
    ajaxSettings: {
                      // error: function(ct, ci) { /* override default error callback */ }
                      // beforeSend: function(ct, ci) { /* called first within default beforeSend callback }
                      dataType: 'html'
    },
    debug: false
  };


/*
 * Global defaults for clueTips. Apply to all calls to the clueTip plugin.
 *
 * @example $.cluetip.setup({
 *   insertionType: 'prependTo',
 *   insertionElement: '#container'
 * });
 * 
 * @property
 * @name $.cluetip.setup
 * @type Map
 * @cat Plugins/tooltip
 * @option String insertionType: Default is 'appendTo'. Determines the method to be used for inserting the clueTip into the DOM. Permitted values are 'appendTo', 'prependTo', 'insertBefore', and 'insertAfter'
 * @option String insertionElement: Default is 'body'. Determines which element in the DOM the plugin will reference when inserting the clueTip.
 *
 */
   
  var insertionType = 'appendTo', insertionElement = 'body';

  $.cluetip.setup = function(options) {
    if (options && options.insertionType && (options.insertionType).match(/appendTo|prependTo|insertBefore|insertAfter/)) {
      insertionType = options.insertionType;
    }
    if (options && options.insertionElement) {
      insertionElement = options.insertionElement;
    }
  };
  
})(jQuery);

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Web Developer MicroLink LLC
United States United States
Started as C++ developer later fell in love with .NET and moved to .NET. I still use Notepad to type in C# console apps. for learning unknown areas. The software business areas I worked are diversified - Gas, Truck Leasing, Telecom, many State and Federal projects.

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