/************************************************************************************************************
*   DHTML modal dialog box
*
*   Created:                        August, 26th, 2006
*   @class Purpose of class:        Display a modal dialog box on the screen.
*           
*   Css files used by this script:  modal-message.css
*
*   Demos of this class:            demo-modal-message-1.html
*
*   Update log:
*
************************************************************************************************************/


/**
* @constructor
*/

DHTML_modalMessage = function()
{
    //var url;                                // url of modal message
    var htmlOfModalMessage;                 // html of modal message

    var divs_transparentDiv;                // Transparent div covering page content
    var divs_content;                       // Modal message div.
    var iframe;                             // Iframe used in ie
    var layoutCss;                          // Name of css file;
    var width;                              // Width of message box
    var height;                             // Height of message box

    var existingBodyOverFlowStyle;          // Existing body overflow css
    var dynContentObj;                      // Reference to dynamic content object
    var cssClassOfMessageBox;               // Alternative css class of message box - in case you want a different appearance on one of them
    var shadowDivVisible;                   // Shadow div visible ? 
    var shadowOffset;                       // X and Y offset of shadow(pixels from content box)
    var MSIE;

    //this.url = '';                          // Default url is blank
    this.htmlOfModalMessage = '';           // Default message is blank
    this.layoutCss = 'modal-message.css';   // Default CSS file
    this.height = 200;                      // Default height of modal message
    this.width = 400;                       // Default width of modal message
    this.cssClassOfMessageBox = false;      // Default alternative css class for the message box
    this.shadowDivVisible = true;           // Shadow div is visible by default
    this.shadowOffset = 5;                  // Default shadow offset.
    this.MSIE = false;
    if (navigator.userAgent.indexOf('MSIE') >= 0) this.MSIE = true;
}

DHTML_modalMessage.prototype = {
    // {{{ setSource(urlOfSource)
    /**
     *  Set source of the modal dialog box
     *  
     *
     * @public  
     */     
    setSource : function(urlOfSource)
    {
        alert("setSource(urlOfSource) not supported");
        //this.url = urlOfSource;
    }   
    // }}}  
    ,
    // {{{ setHtmlContent(newHtmlContent)
    /**
     *  Setting static HTML content for the modal dialog box.
     *  
     *  @param String newHtmlContent = Static HTML content of box
     *
     * @public  
     */     
    setHtmlContent : function(newHtmlContent)
    {
        this.htmlOfModalMessage = newHtmlContent;
    }
    // }}}      
    ,
    // {{{ setSize(width,height)
    /**
     *  Set the size of the modal dialog box
     *  
     *  @param int width = width of box
     *  @param int height = height of box
     *
     * @public  
     */     
    setSize : function(width,height)
    {
        if(width)this.width = width;
        if(height)this.height = height;     
    }
    // }}}      
    ,       
    // {{{ setCssClassMessageBox(newCssClass)
    /**
     *  Assign the message box to a new css class.(in case you wants a different appearance on one of them)
     *  
     *  @param String newCssClass = Name of new css class (Pass false if you want to change back to default)
     *
     * @public  
     */     
    setCssClassMessageBox : function(newCssClass)
    {
        this.cssClassOfMessageBox = newCssClass;
        if(this.divs_content)
        {
            if(this.cssClassOfMessageBox)
                this.divs_content.className=this.cssClassOfMessageBox;
            else
                this.divs_content.className='modalDialog_contentDiv';   
        }
    }
    // }}}      
    ,   
    // {{{ setShadowOffset(newShadowOffset)
    /**
     *  Specify the size of shadow
     *  
     *  @param Int newShadowOffset = Offset of shadow div(in pixels from message box - x and y)
     *
     * @public  
     */     
    setShadowOffset : function(newShadowOffset)
    {
        this.shadowOffset = newShadowOffset
    }
    // }}}      
    ,   
    // {{{ display()
    /**
     *  Display the modal dialog box
     *  
     *
     * @public  
     */     
    display : function()
    {
        if(!this.divs_transparentDiv)
        {
            this.__createDivs();
        }   

        // Redisplaying divs
        this.divs_transparentDiv.style.display='block';
        this.divs_content.style.display='block';
        this.divs_shadow.style.display='block';     
        if(this.MSIE)this.iframe.style.display='block'; 
        this.__resizeDivs();

        /* Call the __resizeDivs method twice in case the css file has changed. The first execution of this method may not catch these changes */
        window.refToThisModalBoxObj = this;     
        setTimeout('window.refToThisModalBoxObj.__resizeDivs()',150);

        this.__insertContent(); // Calling method which inserts content into the message div.
    }
    // }}}      
    ,
    // {{{ ()
    /**
     *  Display the modal dialog box
     *  
     *
     * @public  
     */     
    setShadowDivVisible : function(visible)
    {
        this.shadowDivVisible = visible;
    }
    // }}}  
    ,
    // {{{ close()
    /**
     *  Close the modal dialog box
     *  
     *
     * @public  
     */     
    close : function()
    {
        //document.documentElement.style.overflow = ''; // Setting the CSS overflow attribute of the <html> tag back to default.

        /* Hiding divs */
        this.divs_transparentDiv.style.display='none';
        this.divs_content.style.display='none';
        this.divs_shadow.style.display='none';
        if(this.MSIE)this.iframe.style.display='none';
    }   
    // }}}  
    ,
    // {{{ __addEvent()
    /**
     *  Add event
     *  
     *
     * @private 
     */     
    addEvent : function(whichObject,eventType,functionName,suffix)
    { 
      if(!suffix)suffix = '';
      if(whichObject.attachEvent)
      { 
        whichObject['e'+eventType+functionName+suffix] = functionName; 
        whichObject[eventType+functionName+suffix] = function(){whichObject['e'+eventType+functionName+suffix]( window.event );} 
        whichObject.attachEvent( 'on'+eventType, whichObject[eventType+functionName+suffix] ); 
      }
      else 
        whichObject.addEventListener(eventType,functionName,false);         
    } 
    // }}}  
    ,
    // {{{ __createDivs()
    /**
     *  Create the divs for the modal dialog box
     *  
     *
     * @private 
     */     
    __createDivs : function()
    {
        // Creating transparent div
        this.divs_transparentDiv = document.createElement('DIV');
        this.divs_transparentDiv.className='modalDialog_transparentDivs';
        this.divs_transparentDiv.style.left = '0px';
        this.divs_transparentDiv.style.top = '0px';

        document.body.appendChild(this.divs_transparentDiv);
        // Creating content div
        this.divs_content = document.createElement('DIV');
        this.divs_content.className = 'modalDialog_contentDiv';
        this.divs_content.id = 'DHTMLSuite_modalBox_contentDiv';
        this.divs_content.style.zIndex = 100000;

        if(this.MSIE)
        {
            this.iframe = document.createElement('<IFRAME src="about:blank" frameborder=0>');
            this.iframe.style.zIndex = 90000;
            this.iframe.style.position = 'absolute';
            document.body.appendChild(this.iframe); 
        }

        document.body.appendChild(this.divs_content);
        // Creating shadow div
        this.divs_shadow = document.createElement('DIV');
        this.divs_shadow.className = 'modalDialog_contentDiv_shadow';
        this.divs_shadow.style.zIndex = 95000;
        document.body.appendChild(this.divs_shadow);
        window.refToModMessage = this;
        this.addEvent(window,'scroll',function(e){ window.refToModMessage.__repositionTransparentDiv() });
        this.addEvent(window,'resize',function(e){ window.refToModMessage.__repositionTransparentDiv() });
    }
    // }}}
    ,
    // {{{ __getBrowserSize()
    /**
     *  Get browser size
     *  
     *
     * @private 
     */     
    __getBrowserSize : function()
    {
        var bodyWidth = document.documentElement.clientWidth;
        var bodyHeight = document.documentElement.clientHeight;
   
        var bodyWidth, bodyHeight; 
        if (self.innerHeight)
        { // all except Explorer 
           bodyWidth = self.innerWidth; 
           bodyHeight = self.innerHeight; 
        }
        else if (document.documentElement && document.documentElement.clientHeight)
        {
           // Explorer 6 Strict Mode         
           bodyWidth = document.documentElement.clientWidth; 
           bodyHeight = document.documentElement.clientHeight; 
        }
        else if (document.body)
        { // other Explorers         
           bodyWidth = document.body.clientWidth; 
           bodyHeight = document.body.clientHeight; 
        } 
        return [bodyWidth,bodyHeight];      
        
    }
    // }}}  
    ,
    // {{{ __resizeDivs()
    /**
     *  Resize the message divs
     *  
     *
     * @private 
     */ 
    __resizeDivs : function()
    {
        var topOffset = Math.max(document.body.scrollTop,document.documentElement.scrollTop);

        if(this.cssClassOfMessageBox)
            this.divs_content.className=this.cssClassOfMessageBox;
        else
            this.divs_content.className='modalDialog_contentDiv';   

        if (!this.divs_transparentDiv) return;

        // Preserve scroll position
        var st = Math.max(document.body.scrollTop,document.documentElement.scrollTop);
        var sl = Math.max(document.body.scrollLeft,document.documentElement.scrollLeft);

        window.scrollTo(sl,st);
        setTimeout('window.scrollTo(' + sl + ',' + st + ');',10);

        this.__repositionTransparentDiv();

        var brSize = this.__getBrowserSize();
        var bodyWidth = brSize[0];
        var bodyHeight = brSize[1];

        // Setting width and height of content div
        this.divs_content.style.width = this.width + 'px';
        this.divs_content.style.height= this.height + 'px';     

        // Creating temporary width variables since the actual width of the content div could be larger than this.width and this.height(i.e. padding and border)
        var tmpWidth = this.divs_content.offsetWidth;   
        var tmpHeight = this.divs_content.offsetHeight;

        // Setting width and height of left transparent div

        this.divs_content.style.left = Math.ceil((bodyWidth - tmpWidth) / 2) + 'px';;
        this.divs_content.style.top = (Math.ceil((bodyHeight - tmpHeight) / 2) +  topOffset) + 'px';

        if(this.MSIE)
        {
            this.iframe.style.left = this.divs_content.style.left;
            this.iframe.style.top = this.divs_content.style.top;
            this.iframe.style.width = this.divs_content.style.width;
            this.iframe.style.height = this.divs_content.style.height;
        }

        this.divs_shadow.style.left = (this.divs_content.style.left.replace('px','')/1 + this.shadowOffset) + 'px';
        this.divs_shadow.style.top = (this.divs_content.style.top.replace('px','')/1 + this.shadowOffset) + 'px';
        this.divs_shadow.style.height = tmpHeight + 'px';
        this.divs_shadow.style.width = tmpWidth + 'px';

        if (!this.shadowDivVisible) this.divs_shadow.style.display='none'; // Hiding shadow if it has been disabled
    }
    // }}}  
    ,
    // {{{ __insertContent()
    /**
     *  Insert content into the content div
     *  
     *
     * @private 
     */     
    __repositionTransparentDiv : function()
    {
        this.divs_transparentDiv.style.top = Math.max(document.body.scrollTop,document.documentElement.scrollTop) + 'px';
        this.divs_transparentDiv.style.left = Math.max(document.body.scrollLeft,document.documentElement.scrollLeft) + 'px';
        var brSize = this.__getBrowserSize();
        var bodyWidth = brSize[0];
        var bodyHeight = brSize[1];
        this.divs_transparentDiv.style.width = bodyWidth + 'px';
        this.divs_transparentDiv.style.height = bodyHeight + 'px';      
    }
    // }}}  
    ,
    // {{{ __insertContent()
    /**
     *  Insert content into the content div
     *  
     *
     * @private 
     */ 
    __insertContent : function()
    {
        //if (this.url) // url specified - load content dynamically
        //{
        //    ajax_loadContent('DHTMLSuite_modalBox_contentDiv',this.url);
        //}
        //else // no url set, put static content inside the message box
        //{
            this.divs_content.innerHTML = this.htmlOfModalMessage;  
        //}
    }       
}