Struts example source code file (style.js)

This example Struts source code file (style.js) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Struts tags/keywords

alphaimageloader, alphaimageloader, containsall:0, containsany:1, isonly:2, no, no, regexp, regexp, string, uri, uri

The Struts style.js source code

/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/



dojo.provide("dojo.html.style");
dojo.require("dojo.html.common");
dojo.require("dojo.uri.Uri");
dojo.html.getClass = function (node) {
	node = dojo.byId(node);
	if (!node) {
		return "";
	}
	var cs = "";
	if (node.className) {
		cs = node.className;
	} else {
		if (dojo.html.hasAttribute(node, "class")) {
			cs = dojo.html.getAttribute(node, "class");
		}
	}
	return cs.replace(/^\s+|\s+$/g, "");
};
dojo.html.getClasses = function (node) {
	var c = dojo.html.getClass(node);
	return (c == "") ? [] : c.split(/\s+/g);
};
dojo.html.hasClass = function (node, classname) {
	return (new RegExp("(^|\\s+)" + classname + "(\\s+|$)")).test(dojo.html.getClass(node));
};
dojo.html.prependClass = function (node, classStr) {
	classStr += " " + dojo.html.getClass(node);
	return dojo.html.setClass(node, classStr);
};
dojo.html.addClass = function (node, classStr) {
	if (dojo.html.hasClass(node, classStr)) {
		return false;
	}
	classStr = (dojo.html.getClass(node) + " " + classStr).replace(/^\s+|\s+$/g, "");
	return dojo.html.setClass(node, classStr);
};
dojo.html.setClass = function (node, classStr) {
	node = dojo.byId(node);
	var cs = new String(classStr);
	try {
		if (typeof node.className == "string") {
			node.className = cs;
		} else {
			if (node.setAttribute) {
				node.setAttribute("class", classStr);
				node.className = cs;
			} else {
				return false;
			}
		}
	}
	catch (e) {
		dojo.debug("dojo.html.setClass() failed", e);
	}
	return true;
};
dojo.html.removeClass = function (node, classStr, allowPartialMatches) {
	try {
		if (!allowPartialMatches) {
			var newcs = dojo.html.getClass(node).replace(new RegExp("(^|\\s+)" + classStr + "(\\s+|$)"), "$1$2");
		} else {
			var newcs = dojo.html.getClass(node).replace(classStr, "");
		}
		dojo.html.setClass(node, newcs);
	}
	catch (e) {
		dojo.debug("dojo.html.removeClass() failed", e);
	}
	return true;
};
dojo.html.replaceClass = function (node, newClass, oldClass) {
	dojo.html.removeClass(node, oldClass);
	dojo.html.addClass(node, newClass);
};
dojo.html.classMatchType = {ContainsAll:0, ContainsAny:1, IsOnly:2};
dojo.html.getElementsByClass = function (classStr, parent, nodeType, classMatchType, useNonXpath) {
	useNonXpath = false;
	var _document = dojo.doc();
	parent = dojo.byId(parent) || _document;
	var classes = classStr.split(/\s+/g);
	var nodes = [];
	if (classMatchType != 1 && classMatchType != 2) {
		classMatchType = 0;
	}
	var reClass = new RegExp("(\\s|^)((" + classes.join(")|(") + "))(\\s|$)");
	var srtLength = classes.join(" ").length;
	var candidateNodes = [];
	if (!useNonXpath && _document.evaluate) {
		var xpath = ".//" + (nodeType || "*") + "[contains(";
		if (classMatchType != dojo.html.classMatchType.ContainsAny) {
			xpath += "concat(' ',@class,' '), ' " + classes.join(" ') and contains(concat(' ',@class,' '), ' ") + " ')";
			if (classMatchType == 2) {
				xpath += " and string-length(@class)=" + srtLength + "]";
			} else {
				xpath += "]";
			}
		} else {
			xpath += "concat(' ',@class,' '), ' " + classes.join(" ') or contains(concat(' ',@class,' '), ' ") + " ')]";
		}
		var xpathResult = _document.evaluate(xpath, parent, null, XPathResult.ANY_TYPE, null);
		var result = xpathResult.iterateNext();
		while (result) {
			try {
				candidateNodes.push(result);
				result = xpathResult.iterateNext();
			}
			catch (e) {
				break;
			}
		}
		return candidateNodes;
	} else {
		if (!nodeType) {
			nodeType = "*";
		}
		candidateNodes = parent.getElementsByTagName(nodeType);
		var node, i = 0;
	outer:
		while (node = candidateNodes[i++]) {
			var nodeClasses = dojo.html.getClasses(node);
			if (nodeClasses.length == 0) {
				continue outer;
			}
			var matches = 0;
			for (var j = 0; j < nodeClasses.length; j++) {
				if (reClass.test(nodeClasses[j])) {
					if (classMatchType == dojo.html.classMatchType.ContainsAny) {
						nodes.push(node);
						continue outer;
					} else {
						matches++;
					}
				} else {
					if (classMatchType == dojo.html.classMatchType.IsOnly) {
						continue outer;
					}
				}
			}
			if (matches == classes.length) {
				if ((classMatchType == dojo.html.classMatchType.IsOnly) && (matches == nodeClasses.length)) {
					nodes.push(node);
				} else {
					if (classMatchType == dojo.html.classMatchType.ContainsAll) {
						nodes.push(node);
					}
				}
			}
		}
		return nodes;
	}
};
dojo.html.getElementsByClassName = dojo.html.getElementsByClass;
dojo.html.toCamelCase = function (selector) {
	var arr = selector.split("-"), cc = arr[0];
	for (var i = 1; i < arr.length; i++) {
		cc += arr[i].charAt(0).toUpperCase() + arr[i].substring(1);
	}
	return cc;
};
dojo.html.toSelectorCase = function (selector) {
	return selector.replace(/([A-Z])/g, "-$1").toLowerCase();
};
if (dojo.render.html.ie) {
	dojo.html.getComputedStyle = function (node, property, value) {
		node = dojo.byId(node);
		if (!node || !node.currentStyle) {
			return value;
		}
		return node.currentStyle[dojo.html.toCamelCase(property)];
	};
	dojo.html.getComputedStyles = function (node) {
		return node.currentStyle;
	};
} else {
	dojo.html.getComputedStyle = function (node, property, value) {
		node = dojo.byId(node);
		if (!node || !node.style) {
			return value;
		}
		var s = document.defaultView.getComputedStyle(node, null);
		return (s && s[dojo.html.toCamelCase(property)]) || "";
	};
	dojo.html.getComputedStyles = function (node) {
		return document.defaultView.getComputedStyle(node, null);
	};
}
dojo.html.getStyleProperty = function (node, cssSelector) {
	node = dojo.byId(node);
	return (node && node.style ? node.style[dojo.html.toCamelCase(cssSelector)] : undefined);
};
dojo.html.getStyle = function (node, cssSelector) {
	var value = dojo.html.getStyleProperty(node, cssSelector);
	return (value ? value : dojo.html.getComputedStyle(node, cssSelector));
};
dojo.html.setStyle = function (node, cssSelector, value) {
	node = dojo.byId(node);
	if (node && node.style) {
		var camelCased = dojo.html.toCamelCase(cssSelector);
		node.style[camelCased] = value;
	}
};
dojo.html.setStyleText = function (target, text) {
	try {
		target.style.cssText = text;
	}
	catch (e) {
		target.setAttribute("style", text);
	}
};
dojo.html.copyStyle = function (target, source) {
	if (!source.style.cssText) {
		target.setAttribute("style", source.getAttribute("style"));
	} else {
		target.style.cssText = source.style.cssText;
	}
	dojo.html.addClass(target, dojo.html.getClass(source));
};
dojo.html.getUnitValue = function (node, cssSelector, autoIsZero) {
	var s = dojo.html.getComputedStyle(node, cssSelector);
	if ((!s) || ((s == "auto") && (autoIsZero))) {
		return {value:0, units:"px"};
	}
	var match = s.match(/(\-?[\d.]+)([a-z%]*)/i);
	if (!match) {
		return dojo.html.getUnitValue.bad;
	}
	return {value:Number(match[1]), units:match[2].toLowerCase()};
};
dojo.html.getUnitValue.bad = {value:NaN, units:""};
if (dojo.render.html.ie) {
	dojo.html.toPixelValue = function (element, styleValue) {
		if (!styleValue) {
			return 0;
		}
		if (styleValue.slice(-2) == "px") {
			return parseFloat(styleValue);
		}
		var pixelValue = 0;
		with (element) {
			var sLeft = style.left;
			var rsLeft = runtimeStyle.left;
			runtimeStyle.left = currentStyle.left;
			try {
				style.left = styleValue || 0;
				pixelValue = style.pixelLeft;
				style.left = sLeft;
				runtimeStyle.left = rsLeft;
			}
			catch (e) {
			}
		}
		return pixelValue;
	};
} else {
	dojo.html.toPixelValue = function (element, styleValue) {
		return (styleValue && (styleValue.slice(-2) == "px") ? parseFloat(styleValue) : 0);
	};
}
dojo.html.getPixelValue = function (node, styleProperty, autoIsZero) {
	return dojo.html.toPixelValue(node, dojo.html.getComputedStyle(node, styleProperty));
};
dojo.html.setPositivePixelValue = function (node, selector, value) {
	if (isNaN(value)) {
		return false;
	}
	node.style[selector] = Math.max(0, value) + "px";
	return true;
};
dojo.html.styleSheet = null;
dojo.html.insertCssRule = function (selector, declaration, index) {
	if (!dojo.html.styleSheet) {
		if (document.createStyleSheet) {
			dojo.html.styleSheet = document.createStyleSheet();
		} else {
			if (document.styleSheets[0]) {
				dojo.html.styleSheet = document.styleSheets[0];
			} else {
				return null;
			}
		}
	}
	if (arguments.length < 3) {
		if (dojo.html.styleSheet.cssRules) {
			index = dojo.html.styleSheet.cssRules.length;
		} else {
			if (dojo.html.styleSheet.rules) {
				index = dojo.html.styleSheet.rules.length;
			} else {
				return null;
			}
		}
	}
	if (dojo.html.styleSheet.insertRule) {
		var rule = selector + " { " + declaration + " }";
		return dojo.html.styleSheet.insertRule(rule, index);
	} else {
		if (dojo.html.styleSheet.addRule) {
			return dojo.html.styleSheet.addRule(selector, declaration, index);
		} else {
			return null;
		}
	}
};
dojo.html.removeCssRule = function (index) {
	if (!dojo.html.styleSheet) {
		dojo.debug("no stylesheet defined for removing rules");
		return false;
	}
	if (dojo.render.html.ie) {
		if (!index) {
			index = dojo.html.styleSheet.rules.length;
			dojo.html.styleSheet.removeRule(index);
		}
	} else {
		if (document.styleSheets[0]) {
			if (!index) {
				index = dojo.html.styleSheet.cssRules.length;
			}
			dojo.html.styleSheet.deleteRule(index);
		}
	}
	return true;
};
dojo.html._insertedCssFiles = [];
dojo.html.insertCssFile = function (URI, doc, checkDuplicates, fail_ok) {
	if (!URI) {
		return;
	}
	if (!doc) {
		doc = document;
	}
	var cssStr = dojo.hostenv.getText(URI, false, fail_ok);
	if (cssStr === null) {
		return;
	}
	cssStr = dojo.html.fixPathsInCssText(cssStr, URI);
	if (checkDuplicates) {
		var idx = -1, node, ent = dojo.html._insertedCssFiles;
		for (var i = 0; i < ent.length; i++) {
			if ((ent[i].doc == doc) && (ent[i].cssText == cssStr)) {
				idx = i;
				node = ent[i].nodeRef;
				break;
			}
		}
		if (node) {
			var styles = doc.getElementsByTagName("style");
			for (var i = 0; i < styles.length; i++) {
				if (styles[i] == node) {
					return;
				}
			}
			dojo.html._insertedCssFiles.shift(idx, 1);
		}
	}
	var style = dojo.html.insertCssText(cssStr, doc);
	dojo.html._insertedCssFiles.push({"doc":doc, "cssText":cssStr, "nodeRef":style});
	if (style && djConfig.isDebug) {
		style.setAttribute("dbgHref", URI);
	}
	return style;
};
dojo.html.insertCssText = function (cssStr, doc, URI) {
	if (!cssStr) {
		return;
	}
	if (!doc) {
		doc = document;
	}
	if (URI) {
		cssStr = dojo.html.fixPathsInCssText(cssStr, URI);
	}
	var style = doc.createElement("style");
	style.setAttribute("type", "text/css");
	var head = doc.getElementsByTagName("head")[0];
	if (!head) {
		dojo.debug("No head tag in document, aborting styles");
		return;
	} else {
		head.appendChild(style);
	}
	if (style.styleSheet) {
		var setFunc = function () {
			try {
				style.styleSheet.cssText = cssStr;
			}
			catch (e) {
				dojo.debug(e);
			}
		};
		if (style.styleSheet.disabled) {
			setTimeout(setFunc, 10);
		} else {
			setFunc();
		}
	} else {
		var cssText = doc.createTextNode(cssStr);
		style.appendChild(cssText);
	}
	return style;
};
dojo.html.fixPathsInCssText = function (cssStr, URI) {
	if (!cssStr || !URI) {
		return;
	}
	var match, str = "", url = "", urlChrs = "[\\t\\s\\w\\(\\)\\/\\.\\\\'\"-:#=&?~]+";
	var regex = new RegExp("url\\(\\s*(" + urlChrs + ")\\s*\\)");
	var regexProtocol = /(file|https?|ftps?):\/\//;
	regexTrim = new RegExp("^[\\s]*(['\"]?)(" + urlChrs + ")\\1[\\s]*?$");
	if (dojo.render.html.ie55 || dojo.render.html.ie60) {
		var regexIe = new RegExp("AlphaImageLoader\\((.*)src=['\"](" + urlChrs + ")['\"]");
		while (match = regexIe.exec(cssStr)) {
			url = match[2].replace(regexTrim, "$2");
			if (!regexProtocol.exec(url)) {
				url = (new dojo.uri.Uri(URI, url).toString());
			}
			str += cssStr.substring(0, match.index) + "AlphaImageLoader(" + match[1] + "src='" + url + "'";
			cssStr = cssStr.substr(match.index + match[0].length);
		}
		cssStr = str + cssStr;
		str = "";
	}
	while (match = regex.exec(cssStr)) {
		url = match[1].replace(regexTrim, "$2");
		if (!regexProtocol.exec(url)) {
			url = (new dojo.uri.Uri(URI, url).toString());
		}
		str += cssStr.substring(0, match.index) + "url(" + url + ")";
		cssStr = cssStr.substr(match.index + match[0].length);
	}
	return str + cssStr;
};
dojo.html.setActiveStyleSheet = function (title) {
	var i = 0, a, els = dojo.doc().getElementsByTagName("link");
	while (a = els[i++]) {
		if (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
			a.disabled = true;
			if (a.getAttribute("title") == title) {
				a.disabled = false;
			}
		}
	}
};
dojo.html.getActiveStyleSheet = function () {
	var i = 0, a, els = dojo.doc().getElementsByTagName("link");
	while (a = els[i++]) {
		if (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) {
			return a.getAttribute("title");
		}
	}
	return null;
};
dojo.html.getPreferredStyleSheet = function () {
	var i = 0, a, els = dojo.doc().getElementsByTagName("link");
	while (a = els[i++]) {
		if (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("rel").indexOf("alt") == -1 && a.getAttribute("title")) {
			return a.getAttribute("title");
		}
	}
	return null;
};
dojo.html.applyBrowserClass = function (node) {
	var drh = dojo.render.html;
	var classes = {dj_ie:drh.ie, dj_ie55:drh.ie55, dj_ie6:drh.ie60, dj_ie7:drh.ie70, dj_iequirks:drh.ie && drh.quirks, dj_opera:drh.opera, dj_opera8:drh.opera && (Math.floor(dojo.render.version) == 8), dj_opera9:drh.opera && (Math.floor(dojo.render.version) == 9), dj_khtml:drh.khtml, dj_safari:drh.safari, dj_gecko:drh.mozilla};
	for (var p in classes) {
		if (classes[p]) {
			dojo.html.addClass(node, p);
		}
	}
};