domtt.js

xmpp协议的客户端软件

		// unhide the tooltip
		tooltip.set('status', 'active');
		tipObj.style.display = '';
		tipObj.style.visibility = 'visible';

		var fade = tooltip.get('fade');
		if (fade != 'neither')
		{
			var fadeHandler = tooltip.get('fadeHandler');
			if (fade == 'out' || fade == 'both')
			{
				fadeHandler.haltFade();
				if (fade == 'out')
				{
					fadeHandler.halt();
				}
			}

			if (fade == 'in' || fade == 'both')
			{
				fadeHandler.fadeIn();
			}
		}

		if (tooltip.get('type') == 'greasy' && tooltip.get('lifetime') != 0)
		{
			tooltip.set('lifetimeTimeout', domLib_setTimeout(domTT_runDeactivate, tooltip.get('lifetime'), [tipObj.id]));
		}
	}

	if (tooltip.get('position') == 'absolute' && domTT_detectCollisions)
	{
		// utilize original collision element cache
		domLib_detectCollisions(tipObj, false, true);
	}
}

// }}}
// {{{ domTT_close()

// in_handle can either be an child object of the tip, the tip id or the owner id
function domTT_close(in_handle)
{
	var id;
	if (typeof(in_handle) == 'object' && in_handle.nodeType)
	{
		var obj = in_handle;
		while (!obj.id || !domTT_tooltips.get(obj.id))
		{
			obj = obj.parentNode;
	
			if (obj.nodeType != document.ELEMENT_NODE) { return; }
		}

		id = obj.id;
	}
	else
	{
		id = in_handle;
	}

	domTT_deactivate(id);
}

// }}}
// {{{ domTT_closeAll()

// run through the tooltips and close them all
function domTT_closeAll()
{
	// NOTE: this will iterate 2x # of tooltips
	for (var id in domTT_tooltips.elementData) {
		domTT_close(id);
	}
}

// }}}
// {{{ domTT_deactivate()

// in_id is either the tip id or the owner id
function domTT_deactivate(in_id)
{
	var tooltip = domTT_tooltips.get(in_id);
	if (tooltip)
	{
		var status = tooltip.get('status');
		if (status == 'pending')
		{
			// cancel the creation of this tip if it is still pending
			domLib_clearTimeout(tooltip.get('activateTimeout'));
			tooltip.set('status', 'inactive');
		}
		else if (status == 'active')
		{
			if (tooltip.get('lifetime'))
			{
				domLib_clearTimeout(tooltip.get('lifetimeTimeout'));
			}

			var tipObj = tooltip.get('node');
			if (tooltip.get('closeAction') == 'hide')
			{
				var fade = tooltip.get('fade');
				if (fade != 'neither')
				{
					var fadeHandler = tooltip.get('fadeHandler');
					if (fade == 'out' || fade == 'both')
					{
						fadeHandler.fadeOut();
					}
					else
					{
						fadeHandler.hide();
					}
				}
				else
				{
					tipObj.style.display = 'none';
				}
			}
			else
			{
				tooltip.get('parent').removeChild(tipObj);
				domTT_tooltips.remove(tooltip.get('owner').id);
				domTT_tooltips.remove(tooltip.get('id'));
			}

			tooltip.set('status', 'inactive');
			if (domTT_detectCollisions) {
				// unhide all of the selects that are owned by this object
				// utilize original collision element cache
				domLib_detectCollisions(tipObj, true, true); 
			}
		}
	}
}

// }}}
// {{{ domTT_mouseout()

function domTT_mouseout(in_owner, in_event)
{
	if (!domLib_useLibrary) { return false; }

	if (typeof(in_event) == 'undefined') { in_event = window.event;	}

	var toChild = domLib_isDescendantOf(in_event[domLib_eventTo], in_owner, domTT_bannedTags);
	var tooltip = domTT_tooltips.get(in_owner.id);
	if (tooltip && (tooltip.get('type') == 'greasy' || tooltip.get('status') != 'active'))
	{
		// deactivate tip if exists and we moved away from the owner
		if (!toChild)
		{
			domTT_deactivate(in_owner.id);
			try { window.status = window.defaultStatus; } catch(e) {}
		}
	}
	else if (!toChild)
	{
		try { window.status = window.defaultStatus; } catch(e) {}
	}
}

// }}}
// {{{ domTT_mousemove()

function domTT_mousemove(in_owner, in_event)
{
	if (!domLib_useLibrary) { return false; }

	if (typeof(in_event) == 'undefined') { in_event = window.event;	}

	var tooltip = domTT_tooltips.get(in_owner.id);
	if (tooltip && tooltip.get('trail') && tooltip.get('status') == 'active')
	{
		// see if we are trailing lazy
		if (tooltip.get('lazy'))
		{
			domLib_setTimeout(domTT_runShow, domTT_trailDelay, [in_owner.id, in_event]);
		}
		else
		{
			domTT_show(in_owner.id, in_event);
		}
	}
}

// }}}
// {{{ domTT_addPredefined()

function domTT_addPredefined(in_id)
{
	var options = new Hash();
	for (var i = 1; i < arguments.length; i += 2)
	{
		options.set(arguments[i], arguments[i + 1]);
	}

	domTT_predefined.set(in_id, options);
}

// }}}
// {{{ domTT_correctEdgeBleed()

function domTT_correctEdgeBleed(in_width, in_height, in_x, in_y, in_offsetX, in_offsetY, in_mouseOffset, in_window)
{
	var win, doc;
	var bleedRight, bleedBottom;
	var pageHeight, pageWidth, pageYOffset, pageXOffset;

	var x = in_x + in_offsetX;
	var y = in_y + in_offsetY + in_mouseOffset;

	win = (typeof(in_window) == 'undefined' ? window : in_window);

	// Gecko and IE swaps values of clientHeight, clientWidth properties when
	// in standards compliance mode from documentElement to document.body
	doc = ((domLib_standardsMode && (domLib_isIE || domLib_isGecko)) ? win.document.documentElement : win.document.body);

	// for IE in compliance mode
	if (domLib_isIE)
	{
		pageHeight = doc.clientHeight;
		pageWidth = doc.clientWidth;
		pageYOffset = doc.scrollTop;
		pageXOffset = doc.scrollLeft;
	}
	else
	{
		pageHeight = doc.clientHeight;
		pageWidth = doc.clientWidth;

		if (domLib_isKHTML)
		{
			pageHeight = win.innerHeight;
		}

		pageYOffset = win.pageYOffset;
		pageXOffset = win.pageXOffset;
	}

	// we are bleeding off the right, move tip over to stay on page
	// logic: take x position, add width and subtract from effective page width
	if ((bleedRight = (x - pageXOffset) + in_width - (pageWidth - domTT_screenEdgePadding)) > 0)
	{
		x -= bleedRight;
	}

	// we are bleeding to the left, move tip over to stay on page
	// if tip doesn't fit, we will go back to bleeding off the right
	// logic: take x position and check if less than edge padding
	if ((x - pageXOffset) < domTT_screenEdgePadding)
	{
		x = domTT_screenEdgePadding + pageXOffset;
	}

	// if we are bleeding off the bottom, flip to north
	// logic: take y position, add height and subtract from effective page height
	if ((bleedBottom = (y - pageYOffset) + in_height - (pageHeight - domTT_screenEdgePadding)) > 0)
	{
		y = in_y - in_height - in_offsetY;
	}

	// if we are bleeding off the top, flip to south
	// if tip doesn't fit, we will go back to bleeding off the bottom
	// logic: take y position and check if less than edge padding
	if ((y - pageYOffset) < domTT_screenEdgePadding)
	{
		y = in_y + domTT_mouseHeight + in_offsetY;
	}

	return {'x' : x, 'y' : y};
}

// }}}
// {{{ domTT_isActive()

// in_id is either the tip id or the owner id
function domTT_isActive(in_id)
{
	var tooltip = domTT_tooltips.get(in_id);
	if (!tooltip || tooltip.get('status') != 'active')
	{
		return false;
	}
	else
	{
		return true;
	}
}

// }}}
// {{{ domTT_runXXX()

// All of these domMenu_runXXX() methods are used by the event handling sections to
// avoid the circular memory leaks caused by inner functions
function domTT_runDeactivate(args) { domTT_deactivate(args[0]); }
function domTT_runShow(args) { domTT_show(args[0], args[1]); }

// }}}
// {{{ domTT_replaceTitles()

function domTT_replaceTitles(in_decorator)
{
	var elements = domLib_getElementsByClass('tooltip');
	for (var i = 0; i < elements.length; i++)
	{
		if (elements[i].title)
		{
			var content;
			if (typeof(in_decorator) == 'function')
			{
				content = in_decorator(elements[i]);
			}
			else
			{
				content = elements[i].title;
			}

			content = content.replace(new RegExp('\'', 'g'), '\\\'');
			elements[i].onmouseover = new Function('in_event', "domTT_activate(this, in_event, 'content', '" + content + "')");
			elements[i].title = '';
		}
	}
}

// }}}
// {{{ domTT_update()

// Allow authors to update the contents of existing tips using the DOM
// Unfortunately, the tip must already exist, or else no work is done.
// TODO: make getting at content or caption cleaner
function domTT_update(handle, content, type)
{
	// type defaults to 'content', can also be 'caption'
	if (typeof(type) == 'undefined')
	{
		type = 'content';
	}

	var tip = domTT_tooltips.get(handle);
	if (!tip)
	{
		return;
	}

	var tipObj = tip.get('node');
	var updateNode;
	if (type == 'content')
	{
		// <div class="contents">...
		updateNode = tipObj.firstChild;
		if (updateNode.className != 'contents')
		{
			// <table><tbody><tr>...</tr><tr><td><div class="contents">...
			updateNode = updateNode.firstChild.firstChild.nextSibling.firstChild.firstChild;
		}
	}
	else
	{
		updateNode = tipObj.firstChild;
		if (updateNode.className == 'contents')
		{
			// missing caption
			return;
		}

		// <table><tbody><tr><td><div class="caption">...
		updateNode = updateNode.firstChild.firstChild.firstChild.firstChild;
	}

	// TODO: allow for a DOM node as content
	updateNode.innerHTML = content;
}

// }}}