domtt.js

xmpp协议的客户端软件

			{
				if (typeof(in_event) == 'undefined') { in_event = window.event; }
				in_event.cancelBubble = true;
			};
			// MacIE has to have a newline at the end and must be made with createTextNode()
			if (domLib_isMacIE)
			{
				closeLinkCell.appendChild(parentDoc.createTextNode("\n"));
			}
		}

		// MacIE has to have a newline at the end and must be made with createTextNode()
		if (domLib_isMacIE)
		{
			captionCell.appendChild(parentDoc.createTextNode("\n"));
		}

		var contentRow = tipLayoutTbody.appendChild(parentDoc.createElement('tr'));
		var contentCell = contentRow.appendChild(parentDoc.createElement('td'));
		contentCell.style.padding = '0px';
		if (numCaptionCells)
		{
			if (domLib_isIE || domLib_isOpera)
			{
				contentCell.colSpan = numCaptionCells;
			}
			else
			{
				contentCell.setAttribute('colspan', numCaptionCells);
			}
		}

		contentBlock = contentCell.appendChild(parentDoc.createElement('div'));
		if (domLib_isIE50)
		{
			contentBlock.style.height = '100%';
		}
	}
	else
	{
		contentBlock = tipObj.appendChild(parentDoc.createElement('div'));
	}

	contentBlock.className = 'contents';

	var content = in_options.get('content');
	// allow content has a function to return the actual content
	if (typeof(content) == 'function') {
		content = content(in_options.get('id'));
	}

	if (content != null && content.nodeType)
	{
		contentBlock.appendChild(domTT_cloneNodes ? content.cloneNode(1) : content);
	}
	else
	{
		contentBlock.innerHTML = content;
	}

	// adjust the width if specified
	if (in_options.has('width'))
	{
		tipObj.style.width = parseInt(in_options.get('width')) + 'px';
	}

	// check if we are overridding the maxWidth
	// if the browser supports maxWidth, the global setting will be ignored (assume stylesheet)
	var maxWidth = domTT_maxWidth;
	if (in_options.has('maxWidth'))
	{
		if ((maxWidth = in_options.get('maxWidth')) === false)
		{
			tipObj.style.maxWidth = domLib_styleNoMaxWidth;
		}
		else
		{
			maxWidth = parseInt(in_options.get('maxWidth'));
			tipObj.style.maxWidth = maxWidth + 'px';
		}
	}

	// HACK: fix lack of maxWidth in CSS for KHTML and IE
	if (maxWidth !== false && (domLib_isIE || domLib_isKHTML) && tipObj.offsetWidth > maxWidth)
	{
		tipObj.style.width = maxWidth + 'px';
	}

	in_options.set('offsetWidth', tipObj.offsetWidth);
	in_options.set('offsetHeight', tipObj.offsetHeight);

	// konqueror miscalcuates the width of the containing div when using the layout table based on the
	// border size of the containing div
	if (domLib_isKonq && tableLayout && !tipObj.style.width)
	{
		var left = document.defaultView.getComputedStyle(tipObj, '').getPropertyValue('border-left-width');
		var right = document.defaultView.getComputedStyle(tipObj, '').getPropertyValue('border-right-width');
		
		left = left.substring(left.indexOf(':') + 2, left.indexOf(';'));
		right = right.substring(right.indexOf(':') + 2, right.indexOf(';'));
		var correction = 2 * ((left ? parseInt(left) : 0) + (right ? parseInt(right) : 0));
		tipObj.style.width = (tipObj.offsetWidth - correction) + 'px';
	}

	// if a width is not set on an absolutely positioned object, both IE and Opera
	// will attempt to wrap when it spills outside of body...we cannot have that
	if (domLib_isIE || domLib_isOpera)
	{
		if (!tipObj.style.width)
		{
			// HACK: the correction here is for a border
			tipObj.style.width = (tipObj.offsetWidth - 2) + 'px';
		}

		// HACK: the correction here is for a border
		tipObj.style.height = (tipObj.offsetHeight - 2) + 'px';
	}

	// store placement offsets from event position
	var offsetX, offsetY;

	// tooltip floats
	if (in_options.get('position') == 'absolute' && !(in_options.has('x') && in_options.has('y')))
	{
		// determine the offset relative to the pointer
		switch (in_options.get('direction'))
		{
			case 'northeast':
				offsetX = in_options.get('offsetX');
				offsetY = 0 - tipObj.offsetHeight - in_options.get('offsetY');
			break;
			case 'northwest':
				offsetX = 0 - tipObj.offsetWidth - in_options.get('offsetX');
				offsetY = 0 - tipObj.offsetHeight - in_options.get('offsetY');
			break;
			case 'north':
				offsetX = 0 - parseInt(tipObj.offsetWidth/2);
				offsetY = 0 - tipObj.offsetHeight - in_options.get('offsetY');
			break;
			case 'southwest':
				offsetX = 0 - tipObj.offsetWidth - in_options.get('offsetX');
				offsetY = in_options.get('offsetY');
			break;
			case 'southeast':
				offsetX = in_options.get('offsetX');
				offsetY = in_options.get('offsetY');
			break;
			case 'south':
				offsetX = 0 - parseInt(tipObj.offsetWidth/2);
				offsetY = in_options.get('offsetY');
			break;
		}

		// if we are in an iframe, get the offsets of the iframe in the parent document
		if (in_options.get('inframe'))
		{
			var iframeObj = domLib_getIFrameReference(window);
			if (iframeObj)
			{
				var frameOffsets = domLib_getOffsets(iframeObj);
				offsetX += frameOffsets.get('left');
				offsetY += frameOffsets.get('top');
			}
		}
	}
	// tooltip is fixed
	else
	{
		offsetX = 0;
		offsetY = 0;
		in_options.set('trail', false);
	}

	// set the direction-specific offsetX/Y
	in_options.set('offsetX', offsetX);
	in_options.set('offsetY', offsetY);
	if (in_options.get('clearMouse') && in_options.get('direction').indexOf('south') != -1)
	{
		in_options.set('mouseOffset', domTT_mouseHeight);
	}
	else
	{
		in_options.set('mouseOffset', 0);
	}

	if (domLib_canFade && typeof(Fadomatic) == 'function')
	{
		if (in_options.get('fade') != 'neither')
		{
			var fadeHandler = new Fadomatic(tipObj, 10, 0, 0, in_options.get('fadeMax'));
			in_options.set('fadeHandler', fadeHandler);
		}
	}
	else
	{
		in_options.set('fade', 'neither');
	}

	// setup mouse events
	if (in_options.get('trail') && typeof(tipOwner.onmousemove) != 'function')
	{
		tipOwner.onmousemove = function(in_event) { domTT_mousemove(this, in_event); };
	}

	if (typeof(tipOwner.onmouseout) != 'function')
	{
		tipOwner.onmouseout = function(in_event) { domTT_mouseout(this, in_event); };
	}

	if (in_options.get('type') == 'sticky')
	{
		if (in_options.get('position') == 'absolute' && domTT_dragEnabled && in_options.get('draggable'))
		{
			if (domLib_isIE)
			{
				captionRow.onselectstart = function() { return false; };
			}

			// setup drag
			captionRow.onmousedown = function(in_event) { domTT_dragStart(tipObj, in_event);  };
			captionRow.onmousemove = function(in_event) { domTT_dragUpdate(in_event); };
			captionRow.onmouseup = function() { domTT_dragStop(); };
		}
	}
	else if (in_options.get('type') == 'velcro')
	{
		/* can use once we have deactivateDelay
		tipObj.onmouseover = function(in_event)
		{
			if (typeof(in_event) == 'undefined') { in_event = window.event; }
			var tooltip = domTT_tooltips.get(tipObj.id);
			if (in_options.get('lifetime')) {
				domLib_clearTimeout(in_options.get('lifetimeTimeout');
			}
		};
		*/
		tipObj.onmouseout = function(in_event)
		{
			if (typeof(in_event) == 'undefined') { in_event = window.event; }
			if (!domLib_isDescendantOf(in_event[domLib_eventTo], tipObj, domTT_bannedTags)) {
				domTT_deactivate(tipOwner.id);
			}
		};
		// NOTE: this might interfere with links in the tip
		tipObj.onclick = function(in_event)
		{
			domTT_deactivate(tipOwner.id);
		};
	}

	if (in_options.get('position') == 'relative')
	{
		tipObj.style.position = 'relative';
	}

	in_options.set('node', tipObj);
	in_options.set('status', 'inactive');
}

// }}}
// {{{ domTT_show()

// in_id is either tip id or the owner id
function domTT_show(in_id, in_event)
{

	// should always find one since this call would be cancelled if tip was killed
	var tooltip = domTT_tooltips.get(in_id);
	var status = tooltip.get('status');
	var tipObj = tooltip.get('node');

	if (tooltip.get('position') == 'absolute')
	{
		var mouseX, mouseY;

		if (tooltip.has('x') && tooltip.has('y'))
		{
			mouseX = tooltip.get('x');
			mouseY = tooltip.get('y');
		}
		else if (!domTT_useGlobalMousePosition || domTT_mousePosition == null || status == 'active' || tooltip.get('delay') == 0)
		{
			var eventPosition = domLib_getEventPosition(in_event);
			var eventX = eventPosition.get('x');
			var eventY = eventPosition.get('y');
			if (tooltip.get('inframe'))
			{
				eventX -= eventPosition.get('scrollX');
				eventY -= eventPosition.get('scrollY');
			}

			// only move tip along requested trail axis when updating position
			if (status == 'active' && tooltip.get('trail') !== true)
			{
				var trail = tooltip.get('trail');
				if (trail == 'x')
				{
					mouseX = eventX;
					mouseY = tooltip.get('mouseY');
				}
				else if (trail == 'y')
				{
					mouseX = tooltip.get('mouseX');
					mouseY = eventY;
				}
			}
			else
			{
				mouseX = eventX;
				mouseY = eventY;
			}
		}
		else
		{
			mouseX = domTT_mousePosition.get('x');
			mouseY = domTT_mousePosition.get('y');
			if (tooltip.get('inframe'))
			{
				mouseX -= domTT_mousePosition.get('scrollX');
				mouseY -= domTT_mousePosition.get('scrollY');
			}
		}

		// we are using a grid for updates
		if (tooltip.get('grid'))
		{
			// if this is not a mousemove event or it is a mousemove event on an active tip and
			// the movement is bigger than the grid
			if (in_event.type != 'mousemove' || (status == 'active' && (Math.abs(tooltip.get('lastX') - mouseX) > tooltip.get('grid') || Math.abs(tooltip.get('lastY') - mouseY) > tooltip.get('grid'))))
			{
				tooltip.set('lastX', mouseX);
				tooltip.set('lastY', mouseY);
			}
			// did not satisfy the grid movement requirement
			else
			{
				return false;
			}
		}

		// mouseX and mouseY store the last acknowleged mouse position,
		// good for trailing on one axis
		tooltip.set('mouseX', mouseX);
		tooltip.set('mouseY', mouseY);

		var coordinates;
		if (domTT_screenEdgeDetection)
		{
			coordinates = domTT_correctEdgeBleed(
				tooltip.get('offsetWidth'),
				tooltip.get('offsetHeight'),
				mouseX,
				mouseY,
				tooltip.get('offsetX'),
				tooltip.get('offsetY'),
				tooltip.get('mouseOffset'),
				tooltip.get('inframe') ? window.parent : window
			);
		}
		else
		{
			coordinates = {
				'x' : mouseX + tooltip.get('offsetX'),
				'y' : mouseY + tooltip.get('offsetY') + tooltip.get('mouseOffset')
			};
		}

		// update the position
		tipObj.style.left = coordinates.x + 'px';
		tipObj.style.top = coordinates.y + 'px';

		// increase the tip zIndex so it goes over previously shown tips
		tipObj.style.zIndex = domLib_zIndex++;
	}

	// if tip is not active, active it now and check for a fade in
	if (status == 'pending')
	{