Summary

JavaScript Window Manager

Version: 0.3

Author: Ed Sanders

/** 
 * @fileoverview JavaScript Window Manager
 * @author Ed Sanders
 * @version 0.3 
 */

var JSWMLib = {
	Version: '0.3',
	load: function() {
		if(
			(typeof Scriptaculous == 'undefined') ||
			parseFloat(Scriptaculous.Version.split(".")[0] + "." + Scriptaculous.Version.split(".")[1]) < 1.7
		)
			throw("JSWM requires the Scriptaculous JavaScript library >= 1.7.0");
	}
};

JSWMLib.load();

Lineclear = function()
{
	var lc = document.createElement('div');
	lc.className = 'JSWM_lineclear';
	lc.innerHTML = '<span></span>';
	return lc;
}

TextButton = function(f, text, title)
{
	var a = document.createElement('A');
	a.innerHTML = text;
	a.onclick = f;
	a.href = "#";
	if(title)
		a.title = title;
	return a;
}

ImageButton = function(f, src, alt, title, hoverSrc)
{
	var img = document.createElement('IMG');
	img.onclick = f;
	img.style.cursor = 'pointer';
	img.src = src;
	img.alt = alt;
	if(title)
		img.title = title;
	if(hoverSrc)
	{
		img.onmouseover = function() { img.src = hoverSrc; };
		img.onmouseout = function() { img.src = src; };
		new Image().src = hoverSrc; // preload hover image
	}
	return img;
};

Element.addMethods({
	removeChildren: function(object)
		{
			while(object.firstChild)
				object.removeChild(object.firstChild);
		}
	}
);

/**
 * Truncate text inside a span using log a binary search
 * @method
 * @param {string} text  text to truncate
 * @param {Element} element  in-line element containing text
 * @param {Element} container  block element containing text element (to test height change)
 * @param {int} w  Maximum width
 * @param {int} h  Maximum height
 */
JSWMtruncate = function(text, element, container, w, h)
{
	if(element.getWidth() > w || container.getHeight() > h)
	{
		var len = text.length;
		var i = Math.floor(len / 4);
		var lasti = 0;
		while(lasti != i && i < len && i >= 0)
		{
			var i2 = i;
			element.replaceChild(document.createTextNode(text.substring(0, text.length - i) + '…'), element.firstChild);
			if(element.getWidth() > w || container.getHeight() > h)
			{
				i += Math.ceil(Math.abs(lasti - i)/2);
			}
			else if(Math.abs(lasti - i) > 1)
			{
				i -= Math.ceil(Math.abs(lasti - i)/2);
			}
			else
			{
				break;
			}
			lasti = i2;
		}
		element.replaceChild(document.createTextNode(text.substring(0, text.length - i) + '…'), element.firstChild);
	}
}

var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();
var pngSupport = !(BrowserDetect.browser == 'Explorer' && BrowserDetect.OS == 'Windows' && BrowserDetect.version < 7);