window.js

ajax 聊天室,实现多人聊天,无刷新!

      var windowParam = parameters.windowParameters || {};
      windowParam.className = windowParam.className || "alert";

    okButtonClass = "class ='" + (parameters.buttonClass ? parameters.buttonClass + " " : "") + " ok_button'" 
      var content = "\
         <div class='" + windowParam.className + "_message'>" + content  + "</div>\
            <div class='" + windowParam.className + "_buttons'>\
               <input type='button' value='" + okLabel + "' onclick='Dialog.okCallback()'" + okButtonClass + "/>\
            </div>";
      return this._openDialog(content, parameters)
   },
   
   info: function(content, parameters) {   
     // Get Ajax return before
     if (typeof content != "string") {
       Dialog._runAjaxRequest(content, parameters, Dialog.info);
       return 
     }
      
     parameters = parameters || {};
     parameters.windowParameters = parameters.windowParameters || {};
     
      var className = parameters.windowParameters.className || "alert";

      var content = "<div id='modal_dialog_message' class='" + className + "_message'>" + content  + "</div>";
      if (parameters.showProgress)
        content += "<div id='modal_dialog_progress' class='" + className + "_progress'>   </div>";

      parameters.windowParameters.ok = null;
      parameters.windowParameters.cancel = null;
    parameters.windowParameters.className = className;
      
      return this._openDialog(content, parameters)
   },
   
   setInfoMessage: function(message) {
      $('modal_dialog_message').update(message);
   },
   
   closeInfo: function() {
      Windows.close(this.dialogId);
   },
   
   _openDialog: function(content, parameters) {
   /*
      // remove old dialog
      if (this.win) 
         this.win.destroy();
   */
    if (! parameters.windowParameters.height && ! parameters.windowParameters.width) {
      parameters.windowParameters.width = WindowUtilities.getPageSize().pageWidth / 2;
    }
    this.dialogId = parameters.id ? parameters.id : 'modal_dialog';

    // compute height or width if need be
    if (! parameters.windowParameters.height || ! parameters.windowParameters.width) {
      var size = WindowUtilities._computeSize(content, this.dialogId, parameters.windowParameters.width, parameters.windowParameters.height)
        if (parameters.windowParameters.height)
          parameters.windowParameters.width = size + 5
        else
          parameters.windowParameters.height = size + 5
    }
      var windowParam = parameters && parameters.windowParameters ? parameters.windowParameters : {};
      windowParam.resizable = windowParam.resizable || false;
      
    windowParam.effectOptions = windowParam.effectOptions || {duration: 0};
    windowParam.minimizable = false;
    windowParam.maximizable = false;
    windowParam.closable = false;
    windowParam.detachable = false;
      this.win = new Window(this.dialogId, windowParam);
      this.win.getContent().innerHTML = content;
     this.win.showCenter(true, parameters.top, parameters.left);   
      this.win.setDestroyOnClose();
      this.win.cancelCallback = parameters.cancel;
      this.win.okCallback = parameters.ok;
      
      return this.win;      
   },
   
   _getAjaxContent: function(originalRequest)  {
      Dialog.callFunc(originalRequest.responseText, Dialog.parameters)
  },
  
  _runAjaxRequest: function(message, parameters, callFunc) {
    if (message.options == null)
       message.options ={}  
     Dialog.onCompleteFunc = message.options.onComplete;
    Dialog.parameters = parameters;
    Dialog.callFunc = callFunc;
    
     message.options.onComplete = Dialog._getAjaxContent;
    new Ajax.Request(message.url, message.options);
  },
  
   okCallback: function() {
      if (!this.win.okCallback || this.win.okCallback(this.win))
       this.win.hide();
   },

   cancelCallback: function() {
      this.win.hide();
      if (this.win.cancelCallback)
         this.win.cancelCallback(this.win);
   }
}
/*
   Based on Lightbox JS: Fullsize Image Overlays 
   by Lokesh Dhakar - http://www.huddletogether.com

   For more information on this script, visit:
   http://huddletogether.com/projects/lightbox/

   Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
   (basically, do anything you want, just leave my name and link)
*/

var isIE = navigator.appVersion.match(/MSIE/) == "MSIE";

var WindowUtilities = {
  // From script.aculo.us
  getWindowScroll: function() {
    var w = window;
      var T, L, W, H;
      with (w.document) {
        if (w.document.documentElement && documentElement.scrollTop) {
          T = documentElement.scrollTop;
          L = documentElement.scrollLeft;
        } else if (w.document.body) {
          T = body.scrollTop;
          L = body.scrollLeft;
        }
        if (w.innerWidth) {
          W = w.innerWidth;
          H = w.innerHeight;
        } else if (w.document.documentElement && documentElement.clientWidth) {
          W = documentElement.clientWidth;
          H = documentElement.clientHeight;
        } else {
          W = body.offsetWidth;
          H = body.offsetHeight
        }
      }
      return { top: T, left: L, width: W, height: H };
    
  }, 
  //
  // getPageSize()
  // Returns array with page width, height and window width, height
  // Core code from - quirksmode.org
  // Edit for Firefox by pHaez
  //
  getPageSize: function(){
     var xScroll, yScroll;

     if (window.innerHeight && window.scrollMaxY) {   
        xScroll = document.body.scrollWidth;
        yScroll = window.innerHeight + window.scrollMaxY;
     } else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
        xScroll = document.body.scrollWidth;
        yScroll = document.body.scrollHeight;
     } else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
        xScroll = document.body.offsetWidth;
        yScroll = document.body.offsetHeight;
     }

     var windowWidth, windowHeight;

     if (self.innerHeight) {   // all except Explorer
        windowWidth = self.innerWidth;
        windowHeight = self.innerHeight;
     } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
        windowWidth = document.documentElement.clientWidth;
        windowHeight = document.documentElement.clientHeight;
     } else if (document.body) { // other Explorers
        windowWidth = document.body.clientWidth;
        windowHeight = document.body.clientHeight;
     }   
     var pageHeight, pageWidth;

     // for small pages with total height less then height of the viewport
     if(yScroll < windowHeight){
        pageHeight = windowHeight;
     } else { 
        pageHeight = yScroll;
     }

     // for small pages with total width less then width of the viewport
     if(xScroll < windowWidth){   
        pageWidth = windowWidth;
     } else {
        pageWidth = xScroll;
     }

     return {pageWidth: pageWidth ,pageHeight: pageHeight , windowWidth: windowWidth, windowHeight: windowHeight};
  },

    disableScreen: function(className, overlayId, contentId) {
      WindowUtilities.initLightbox(overlayId, className);
      var objBody = document.getElementsByTagName("body").item(0);

      // prep objects
       var objOverlay = $(overlayId);

      var pageSize = WindowUtilities.getPageSize();

      // Hide select boxes as they will 'peek' through the image in IE
      if (contentId && isIE) {
      $$('select').each(function(element) {element.style.visibility = "hidden"});
       $$('#'+contentId+' select').each(function(element) {element.style.visibility = "visible"});
      }   
   
      // set height of Overlay to take up whole page and show
      objOverlay.style.height = (pageSize.pageHeight + 'px');
      objOverlay.style.width = (pageSize.windowWidth + 'px');
      objOverlay.style.display = 'block';   
   },

    enableScreen: function(id) {
      id = id || 'overlay_modal';
       var objOverlay =  $(id);
      if (objOverlay) {
         // hide lightbox and overlay
         objOverlay.style.display = 'none';

         // make select boxes visible
         if (isIE) {
        $$('select').each(function(element) {element.style.visibility = "visible"});
         }
         objOverlay.parentNode.removeChild(objOverlay);
      }
   },

   // initLightbox()
   // Function runs on window load, going through link tags looking for rel="lightbox".
   // These links receive onclick events that enable the lightbox display for their targets.
   // The function also inserts html markup at the top of the page which will be used as a
   // container for the overlay pattern and the inline image.
   initLightbox: function(id, className) {
      // Already done, just update zIndex
      if ($(id)) {
         Element.setStyle(id, {zIndex: Windows.maxZIndex + 10});
      }
      // create overlay div and hardcode some functional styles (aesthetic styles are in CSS file)
      else {
         var objBody = document.getElementsByTagName("body").item(0);
         var objOverlay = document.createElement("div");
         objOverlay.setAttribute('id', id);
         objOverlay.className = "overlay_" + className
         objOverlay.style.display = 'none';
         objOverlay.style.position = 'absolute';
         objOverlay.style.top = '0';
         objOverlay.style.left = '0';
         objOverlay.style.zIndex = Windows.maxZIndex + 10;
          objOverlay.style.width = '100%';
         objBody.insertBefore(objOverlay, objBody.firstChild);
      }
   },
   
   setCookie: function(value, parameters) {
    document.cookie= parameters[0] + "=" + escape(value) +
      ((parameters[1]) ? "; expires=" + parameters[1].toGMTString() : "") +
      ((parameters[2]) ? "; path=" + parameters[2] : "") +
      ((parameters[3]) ? "; domain=" + parameters[3] : "") +
      ((parameters[4]) ? "; secure" : "");
  },

  getCookie: function(name) {
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1) {
      begin = dc.indexOf(prefix);
      if (begin != 0) return null;
    } else {
      begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1) {
      end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
  },
  
  _computeSize: function(content, id, width, height, margin) {
    if (margin == null)
      margin = 5;

    var objBody = document.getElementsByTagName("body").item(0);
     var tmpObj = document.createElement("div");
     tmpObj.setAttribute('id', id);
   
     if (height)
       tmpObj.style.height = height + "px"
    else
      tmpObj.style.width = width + "px"
  
     tmpObj.style.position = 'absolute';
     tmpObj.style.top = '0';
     tmpObj.style.left = '0';
    tmpObj.style.display = 'none';

    tmpObj.innerHTML = content;
     objBody.insertBefore(tmpObj, objBody.firstChild);
     
     var size;
     if (height)
       size = $(id).getDimensions().width + margin;
    else
      size = $(id).getDimensions().height + margin;
     objBody.removeChild(tmpObj);
    
     return size;
  }   
}