questia.Package( "coreweb.reader" );

questia.Import("coreweb.common.*");

coreweb.reader.globalSelectedText ='';	

//Key constants

var key = {
	KEY_PAGE_UP: 33,
	KEY_PAGE_DOWN: 34,
	KEY_LEFT_ARROW: 37,
	KEY_UP_ARROW: 38,
	KEY_RIGHT_ARROW: 39,
	KEY_DOWN_ARROW: 40
} 

coreweb.reader.onKey = function(evt) {
    var keyCode = evt.value;
	if(keyCode==key.KEY_PAGE_UP || keyCode==key.KEY_LEFT_ARROW){
 				questia.Events.notify(this,'page.reader','prev')
	 			return false;
	}
	if( keyCode==key.KEY_PAGE_DOWN || keyCode==key.KEY_RIGHT_ARROW){
 				questia.Events.notify(this,'page.reader','next')
	 			return false;
	}
}

coreweb.reader.previousPage = function(evt) {
	window.controlFrame.location.href="/reader/action/prev/"+questia.Dictionary.reader.docId;
}

coreweb.reader.nextPage = function(evt) {
	window.controlFrame.location.href="/reader/action/next/"+questia.Dictionary.reader.docId;
}

/**
* Goto page number in same book
*/
coreweb.reader.gotoPage = function(evt) {
	window.controlFrame.location.href="/reader/action/gotoPage/" + evt.value;
}

/**
* Goto docid in same book.
*/
coreweb.reader.gotoDocId = function(evt) {
	window.controlFrame.location.href="/reader/action/gotoDocId/" + evt.value;
}

coreweb.reader.docIdClicked = function( docId ) {
   if (parent != self ) {
     parent.window.controlFrame.location.href="/reader/action/gotoDocId/" + docId;
   } else {
     window.controlFrame.location.href="/reader/action/gotoDocId/" + docId;
   }
}
   
coreweb.reader.clearHighlight = function(evt){
	//	var offset = document.getElementById("innerPageArea").scrollTop;
	//window.controlFrame.location.href="/reader/action/text/clearHighlight/?offset="+offset;
	window.controlFrame.location.href="/reader/action/text/clearHighlight";
	//Update message
	var msg = document.getElementById("clearSearch");
	if(window.controlFrame.questia.Dictionary.innerReaderArea.showSearchResults){
		msg.innerHTML = "Show Search Highlights";
	}else{
		msg.innerHTML = "Clear Search Highlights";
	}
}

//Checks if the the current page is bookmarked and if so, show the bookmark icon.
coreweb.reader.checkBookmark = function() {
		var icon = document.getElementById("bookmarkIcon");
		if ( icon ) {
			 if(questia.Dictionary.reader.isBookmarked){
	            icon.style.visibility = 'visible';
	         }else{
	            icon.style.visibility = 'hidden';
	        }
        }
}

coreweb.reader.bookmarkPage = function(evt) {
		var icon = document.getElementById("bookmarkIcon");
		icon.style.visibility=evt.value;
}


coreweb.reader.openImage = function(docId,imageName,pageNum){
	var url="/ImageViewer.qst?action=1&docId="+docId+"&imageName=" + imageName + "&pageNo=" + pageNum;
	coreweb.common.openWindow(url, 'Image', 750,550);
}



coreweb.reader.updateHeightStyle = function(height,selector) {
   	var dynDiv = coreweb.common.ComponentUtils.getElementsByClassName(selector,'div');
   	if(dynDiv){
   		for(var i=0;i<dynDiv.length;i++){
	   		dynDiv[i].style.height = height;
   		}
   	}
}


coreweb.reader.toggleFullScreen = function() {
   var header = document.getElementById('navHeader');
   if ( header ) {
       var bfull =  header.style.display != 'none';
       coreweb.reader.showFullScreen( bfull );
   	   if ( bfull ) {
    	  	questia.asyncRequest.get( '/reader/action/fullscreen', null );
	   } else {
    		questia.asyncRequest.get( '/reader/action/normalscreen', null );
	   }
   }
}

coreweb.reader.showFullScreen = function( bfull ) {
   var header = document.getElementById('navHeader');

   if ( header ) {
	   var display = bfull ? 'none' : 'block';
   	   header.style.display = display;
   	   var subnav = document.getElementById('subNav');
   	   if(subnav !=null){
   	     subnav.style.display = display;
       }
       coreweb.reader.resize();
       window.resizeBy(1,1);
   }
}

//Updates the dictionary on the main document from the iframe.
coreweb.reader.updateDictionary= function(evt) {

 if(evt.value != undefined){
 	 if(evt.value.innerReaderArea != undefined){
		questia.Dictionary.innerReaderArea = evt.value.innerReaderArea;
	 }
	 if(evt.value.reader != undefined){
		questia.Dictionary.reader = evt.value.reader;
	 }	 
   }
}


coreweb.reader.updateDiv = function ( destName, srcName, serverDoc  ) {
    //By ID
    var obj = document.getElementById( destName );
    if ( obj != null ) {
    	//alert(serverDoc.getElementById( srcName ).innerHTML);
       obj.innerHTML = serverDoc.getElementById( srcName ).innerHTML;
    }
 }
 
 coreweb.reader.embeddedLinkClicked = function( evt ) {
   var callback = function( responseText ) {
   	  	  var expr = "(" + responseText + ")";
		  var response = eval(expr);
		  if ( response.result == 'navigatePage' ) {
		  	  window.controlFrame.location.href="/reader/action/gotoDocId/" + response.docId;
		  } else if ( response.result == 'openPage' ) {
	          window.location.href = "/read/" + response.docId;		  
		  } else {
		      alert( response.result );
		  }
    }	
	questia.asyncRequest.get( '/reader/action/embeddedLink/' + evt.value, callback );
 }
 

coreweb.reader.hideTOC = function( initFlag ) {
    /**
    * don't call back to server if initializing
    */
    if ( !initFlag ) {
		questia.asyncRequest.get( '/reader/action/hidenavpane', null );
    }
	if (coreweb.common.Browser.isBrowser("safari.mac")|| coreweb.common.Browser.isBrowser("ie.windows")) {
	   /** a hack for safari and windows to shrink the nave pane table column down */
       coreweb.reader.navPane =  document.getElementById( 'tocContainer' ).innerHTML;
       document.getElementById( 'tocContainer' ).innerHTML = '<span><\/span>';
   	   document.getElementById( 'tocContainer' ).style.width = '1px';
   	} else {
  	   document.getElementById( 'tocContainer' ).style.width = '0px';
  	   document.getElementById( 'navPaneContainer' ).style.display = 'none';
	   document.getElementById( 'tocContainer' ).style.display = 'none'
   	}
	document.getElementById( 'tocIcon').style.visibility = 'visible';
    coreweb.reader.resize();
}
coreweb.reader.showTOC = function() {
	questia.asyncRequest.get( '/reader/action/shownavpane', null );
	if (coreweb.common.Browser.isBrowser("safari.mac") || coreweb.common.Browser.isBrowser("ie.windows")) {
       document.getElementById( 'tocContainer' ).innerHTML = coreweb.reader.navPane;
       document.getElementById( 'tocContainer' ).style.width = '240px';
    } else {
		document.getElementById( 'tocContainer' ).style.display = 'block';
		document.getElementById( 'tocContainer' ).style.width = '240px';
	    document.getElementById( 'navPaneContainer' ).style.display = 'block';
	}
	document.getElementById( 'tocIcon').style.visibility = 'hidden';
	coreweb.reader.resize();
	/** need to do again for safari */
	coreweb.reader.resize();
	coreweb.reader.refreshAd();
}

     
coreweb.reader.resize = function(firstTime) {
   if (typeof firstTime == "undefined") {
	   firstTime = true;
   }
   var browserDims = ComponentUtils.getBrowserSize();
   if (coreweb.common.Browser.isBrowser("safari.mac") ) {
      browserDims.height -= 1;
   } else if (coreweb.common.Browser.isBrowser("netscape")  || coreweb.common.Browser.isBrowser("firefox") ) {
       /** if we are running netscape in 'firefox' mode we need to resize 2 times.
         * Netscape pops in scroll bars during down sizing and it messes up the layout.
         * So we need to first size to accommodate for the scroll bars (an make then go away) and then size
         * again to get the proper layout.  We call resize again at then end of this method 
         */
		if ( firstTime ) {
	   		browserDims.height -= 20;
   			browserDims.width -= 20;
   		}
   }
   
   //Check for low resolution screens (800x600)
/*   if( !questia.Dictionary.isDevelopment && questia.Dictionary.reader.showAds && screen.height <= 768 ) {
   		browserDims.height += 100;
   } else  if (screen.height <= 600 && questia.Dictionary.innerReaderArea.isLoggedIn==false && browserDims.height < 540 ) {
   		browserDims.height = 540;		
   }*/

   /** mainContainer is the div around the navPane and the readerComponent */
   var mainDiv = document.getElementById( "mainContainer" );
   var divTop = coreweb.common.ComponentUtils.getPosition( mainDiv ).top;
   var mainHeight = browserDims.height - divTop - 1;

   var navPaneWidth = 0;
   var navPaneContainer = document.getElementById( "navPaneContainer" );
   if ( navPaneContainer ) {
     navPaneContainer.style.height = mainHeight  + 'px';
     var navTabs = document.getElementById( "navPaneTabs" );
     if ( navTabs ) {
	     navTabs.style.height = mainHeight + 'px';
  		 var tabinnerTop = coreweb.common.ComponentUtils.getPosition( 'tabbedContentInner' ).top;
		 var dhdivs = coreweb.common.ComponentUtils.getElementsByClassName( "dynamicHeight" , "div" );
	     var dhheight = browserDims.height - tabinnerTop;
	     if ( dhheight > 0 ) {
		  	 for (var i=0; i < dhdivs.length; i++) {
		       dhdivs[i].style.height = dhheight + 'px';
    	     }
	     }
    	 navPaneWidth = navPaneContainer.offsetWidth;
     }
   }
   document.getElementById( "tocContainer" ).style.height = mainHeight + 'px';

   var readerWidth = browserDims.width - coreweb.common.ComponentUtils.getPosition( "readerContainer" ).left;

   //var pageAreaId = "innerPageArea";
   var pageAreaId = "controlFrame";
   var pageArea = document.getElementById( pageAreaId );
   
   var innerPagePos = coreweb.common.ComponentUtils.getPosition( pageAreaId );
   var innerHeight = browserDims.height - innerPagePos.top;
  
   /** nextPane and prevPane are the long dark nav buttons to left and right of read area */
   document.getElementById( "prevPane" ).style.height = innerHeight + 'px';
   document.getElementById( "nextPane" ).style.height = innerHeight + 'px';

   
   /** readerContainer contains the innerPageArea, navBar, prevPane and nextPane */
   document.getElementById( "readerContainer" ).style.height = mainHeight + 'px';
   document.getElementById( "readerContainer" ).style.width = readerWidth + 'px';
   document.getElementById( "readerNavbar" ).style.width = readerWidth + 'px';
   
   /** account for padding difference in innerPageArea on IE6 and Netscape-firefox mode */
   if (coreweb.common.Browser.isBrowser("ie.windows < 7 || netscape") ) {
	   pageArea.style.width = readerWidth - 36 + 'px';
	   pageArea.style.height = innerHeight - 2 + 'px';
   } else {
      /** scrollable page content area - does not include nextPane and prevPane
       */
      pageArea.style.width = readerWidth - 34 + 'px';
      pageArea.style.height = innerHeight - 1 + 'px';
   }
   
       
   /** div contains the ads at the top */
   var adbar = document.getElementById( "adBar" );
   if ( adbar ) {
		adbar.style.width = browserDims.width - 20 + 'px';
   }
   
   if ( firstTime && (coreweb.common.Browser.isBrowser("netscape") || coreweb.common.Browser.isBrowser("firefox")) ) {
     /** resize again for netscape in 'firefox' mode to account for scrollbars */
     coreweb.reader.resize( false );
   }   
   

   questia.Events.notify(this,'page.reader','resize');
}


coreweb.reader.refreshAd = function (){
 if(window.vAdFrame){
    window.vAdFrame.location.href = '/app?service=page&page=/coreweb/reader/sponsoredAdVertical';
 }
 if(window.hAdFrame){
    window.hAdFrame.location.href = '/app?service=page&page=/coreweb/reader/sponsoredAdHorizontal';
 }
}

coreweb.reader.initialize = function() {
  questia.Events.register( 'page.reader', 'prev', coreweb.reader.previousPage );
  questia.Events.register( 'page.reader', 'next', coreweb.reader.nextPage );
  questia.Events.register( 'page.reader', 'clearHL', coreweb.reader.clearHighlight);
  questia.Events.register( 'page.reader', 'bookmark', coreweb.reader.bookmarkPage );
  questia.Events.register( 'page.reader', 'navpane.open', coreweb.reader.gotoDocId);
  questia.Events.register( 'page.reader', 'gotoPage', coreweb.reader.gotoPage );	
  questia.Events.register( 'page.reader', 'gotoDocId', coreweb.reader.gotoDocId );	
  questia.Events.register( 'page.reader', 'update', coreweb.reader.updateDictionary);	
  questia.Events.register( 'page.reader', 'update', coreweb.reader.refreshAd);
  questia.Events.register( 'page.reader', 'embeddedLink', coreweb.reader.embeddedLinkClicked );	
  questia.Events.register( 'page.reader', 'keyEvent', coreweb.reader.onKey );	
  
  coreweb.reader.checkBookmark();

    if ( !questia.Dictionary.reader.navPaneVisible ) {
        coreweb.reader.hideTOC(true);
    } 
    if ( questia.Dictionary.reader.fullscreen ) {
       coreweb.reader.showFullScreen(true);
    }
    questia.Events.notify(this,'page.reader','update');
  
    window.onresize=coreweb.reader.resize;
    window.onresize();
    /** neede for safari */
    setTimeout( 'window.onresize()', 1000 );

	// listens for any navigation keypress activity
	$(document).keydown( function(e) {
	    questia.Events.notify(this,'page.reader','keyEvent', e.which );
	});


}