www.pudn.com > Soundfrequency.rar > ShortCuts.js

/* Acknowledgments: Josh Heyer / David Stone for initial versions. Bradml for stripdown and package */ 
var keyMapping = []; 
keyMapping['37'] = "LEFT"; 
keyMapping['38'] = "UP"; 
keyMapping['39'] = "RIGHT"; 
keyMapping['40'] = "DOWN"; 
keyMapping['16'] = "SHIFT"; 
keyMapping['17'] = "CTRL"; 
 
var commandMapping = { 
	Combinations: { 
		"CTRL+LEFT"	: function() {MoveToPost(false, false);}, 
		"CTRL+RIGHT": function() {MoveToPost(true, false);}, 
		"CTRL+UP"	: function() {MoveToPost(false, true);}, 
		"CTRL+DOWN"	: function() {MoveToPost(true, true);} 
	} 
}; 
 
document.onkeydown = function(e) { 
	return shortcutEventHandler(e, commandMapping, keyMapping); 
}; 
 
function getControlKeys(e) { 
	var controls = ""; 
	if (e.ctrlKey)controls += "CTRL+"; 
	if (e.shiftKey)controls += "SHIFT+"; 
	if (e.altKey)controls += "ALT+"; 
	return controls; 
} 
 
// return: false == handled, true == keep looking 
function shortcutEventHandler(KeyEvent, commandMapping, keyMapping) { 
	if ( ! KeyEvent) 
		KeyEvent = event; 
	//Because IE knows better 
	var eventKeyValue = (KeyEvent.keyCode) ? KeyEvent.keyCode: KeyEvent.charCode; 
	var eventKeyName = ""; 
	 
	if (keyMapping[eventKeyValue]) 
		eventKeyName = keyMapping[eventKeyValue]; 
	var controlValue = getControlKeys(KeyEvent); 
	eventKeyName = controlValue + eventKeyName; 
 
	if (commandMapping.Combinations[eventKeyName]) 	{ 
		commandMapping.Combinations[eventKeyName](); 
		 
		// Stop propogation if we've found it 
		if ( KeyEvent.preventDefault ) 
			KeyEvent.preventDefault(); 
		else 
			KeyEvent.returnValue = false; 
		if ( KeyEvent.stopPropagation ) 
			KeyEvent.stopPropagation(); 
		else 
			KeyEvent.cancelBubble = true; 
		return false; 
	}  
	return true; 
} 
 
function MoveToPost(next, thread) { 
	if (Selected=="" || isNaN(Selected)) return; 
	var ForumTable = document.getElementById("ForumTable"); 
	if (!ForumTable) return; 
	var elems = getElementsByClass("MsgHd",ForumTable,"tr"); 
	if (!elems) return; 
	 
	var moveTo = null; 
	var selectedId = parseInt(Selected); 
			 
	var selectedIndex = 0; 
	var selectedThreadIndex = 0; 
	for (var i=0; i= 0; next ? ++i : --i)	{ 
		if ((thread && IsThreadHead(elems[i])) || !thread) { 
			nextId = elems[i].id.substring(1, elems[i].id.length-3); 
			nextId = parseInt(nextId); 
			break; 
		} 
	} 
	 
	if (nextId && nextId != parseInt(Selected)) { 
		SwitchMessage(null,nextId); 
		EnsureMessageVisible(Selected, true); 
	} 
} 
 
function IsThreadHead(elem) { 
	return elem.className.indexOf("Rt") >= 0; 
} 
 
function EnsureMessageVisible(msgID, bShowTop) { 
	var msgHeader = document.getElementById(msgID + "_h0"); 
	var msgBody = document.getElementById(msgID + "_h1");  
	if (!msgBody||!msgHeader)return; 
 
	// determine scroll position of top and bottom 
	var scrollContainer = document.body; 
	var top = getRealPos(msgHeader, 'Top'); 
	var bottom = getRealPos(msgBody, 'Top') + msgBody.offsetHeight;  
 
	// if not already visible, scroll to make it so 
	if ( scrollContainer.scrollTop > top && !bShowTop) 
		scrollContainer.scrollTop = top - document.body.clientHeight/10; 
	if ( scrollContainer.scrollTop+scrollContainer.clientHeight < bottom) 
		scrollContainer.scrollTop = bottom-scrollContainer.clientHeight; 
	if ( scrollContainer.scrollTop > top && bShowTop) 
		scrollContainer.scrollTop = top - document.body.clientHeight/10; 
}  
 
function getRealPos(i,which) { 
	iPos = 0 
	while (i!=null)  { 
		iPos += i["offset" + which]; 
		i = i.offsetParent; 
	} 
	return iPos 
} 
 
function getElementsByClass(className,node,tag) { 
  var found = new Array(); 
  if (node == null)node = document; 
  if (tag == null)tag = '*'; 
  var elms = node.getElementsByTagName(tag); 
  var length = elms.length; 
  var pattern = new RegExp("(^|\\s)"+className+"(\\s|$)"); 
  for (i=0, j=0; i