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January 31, 2009 07:21
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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> | |
<html> | |
<head> | |
<title></title> | |
</head> | |
<body> | |
<h2>17.4</h2> | |
<h3>17.4.1</h3> | |
<a href="www.davidflanagan.com" tooltip="good Java/JavaScript blog" | |
onmouseover="Tooltip.schedule(this, event)">David Flanagan's blog</a> | |
<style type="text/css"> | |
.tooltipShadow { | |
background: url(shadow.png); | |
} | |
.tooltipContent { | |
left: -4px; | |
top: -4px; | |
background-color: #ff0; | |
border: solid black 1px; | |
padding: 5px; | |
font: bold 10pt sans-serif; | |
} | |
</style> | |
<script type="text/javascript"> | |
// 14-2 | |
var Geometry = {}; | |
if (window.screenLeft) { | |
Geometry.getWindowX = function () { return window.screenLeft; }; | |
Geometry.getWindowY = function () { return window.screenTop; }; | |
} else if (window.screenX) { | |
Geometry.getWindowX = function () { return window.screenX; }; | |
Geometry.getWindowY = function () { return window.screenY; }; | |
} | |
if (window.innerWidth) { | |
Geometry.getViewportWidth = function () { return window.innerWidth; }; | |
Geometry.getViewportHeight = function () { return window.innerHeight; }; | |
Geometry.getHorizontalScroll = function () { return window.pageXOffset; }; | |
Geometry.getVerticalScroll = function () { return window.pageYOffset; }; | |
} else if (document.documentElement && document.documentElement.clientWidth) { | |
Geometry.getViewportWidth = function () { return document.documentElement.clientWidth; }; | |
Geometry.getViewportHeight = function () { return document.documentElement.clientHeight; }; | |
Geometry.getHorizontalScroll = function () { return document.documentElement.scrollLeft; }; | |
Geometry.getVerticalScroll = function () { return document.documentElement.scrollTop; }; | |
} else if (document.body.clientWidth) { | |
Geometry.getViewportWidth = function () { return document.body.clientWidth; }; | |
Geometry.getViewportHeight = function () { return document.body.clientHeight; }; | |
Geometry.getHorizontalScroll = function () { return document.body.scrollLeft; }; | |
Geometry.getVerticalScroll = function () { return document.body.scrollTop; }; | |
} | |
if (document.documentElement && document.documentElement.scrollWidth) { | |
Geometry.getDocumentWidth = function () { return document.documentElement.scrollWidth; }; | |
Geometry.getDocumentHeight = function () { return document.documentElement.scrollHeight; }; | |
} else if (document.body.scrollWidth) { | |
Geometry.getDocumentWidth = function () { return document.body.scrollWidth; }; | |
Geometry.getDocumentHeight = function () { return document.body.scrollHeight; }; | |
} | |
// 16-4 | |
function Tooltip() { | |
this.tooltip = document.createElement("div"); | |
this.tooltip.style.position = "absolute"; | |
this.tooltip.style.visibility = "hidden"; | |
this.tooltip.className = "tooltipShadow"; | |
this.content = document.createElement("div"); | |
this.content.style.position = "relative"; | |
this.content.className = "tooltipContent"; | |
this.tooltip.appendChild(this.content); | |
} | |
Tooltip.prototype.show = function (text, x, y) { | |
this.content.innerHTML = text; | |
this.tooltip.style.left = x + "px"; | |
this.tooltip.style.top = y + "px"; | |
this.tooltip.style.visibility = "visible"; | |
if (this.tooltip.parentNode != document.body) { | |
document.body.appendChild(this.tooltip); | |
} | |
}; | |
Tooltip.prototype.hide = function () { | |
this.tooltip.style.visibility = "hidden"; | |
}; | |
Tooltip.prototype.schedule = function (target, e) { | |
var text = target.getAttribute("tooltip"); | |
if (!text) { | |
return; | |
} | |
var x = e.clientX + Geometry.getHorizontalScroll(); | |
var y = e.clientY + Geometry.getVerticalScroll(); | |
x += Tooltip.X_OFFSET; | |
y += Tooltip.Y_OFFSET; | |
var self = this; | |
var timer = window.setTimeout(function () { self.show(text, x, y); }, | |
Tooltip.DELAY); | |
if (target.addEventListenr) { | |
target.addEventListener("mouseout", mouseout, false); | |
} else if (target.attachEvent) { | |
target.attachEvent("onmouseout", mouseout); | |
} else { | |
target.onmouseout = mouseout; | |
} | |
function mouseout() { | |
self.hide(); | |
window.clearTimeout(timer); | |
if (target.removeEventgListenr) { | |
target.removeEventgListener("mouseout", mouseout, false); | |
} else if (target.detachEvent) { | |
target.detachEvent("onmouseout", mouseout); | |
} else { | |
target.onmouseout = null; | |
} | |
} | |
}; | |
Tooltip.tooltip = new Tooltip(); | |
Tooltip.schedule = function (target, e) { | |
Tooltip.tooltip.schedule(target, e); | |
}; | |
</script> | |
<hr> | |
<address></address> | |
<!-- hhmts start --> Last modified: Sat Jan 31 16:19:44 +0900 2009 <!-- hhmts end --> | |
</body> | |
</html> |
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