alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Struts example source code file (Widget.js)

This example Struts source code file (Widget.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

date, date, dojoml, error, error, id, no, number, parsetreehandler, parsetreehandlers, parsetreehandlers, regexp, widget, widget

The Struts Widget.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.widget.Widget");
dojo.require("dojo.lang.func");
dojo.require("dojo.lang.array");
dojo.require("dojo.lang.extras");
dojo.require("dojo.lang.declare");
dojo.require("dojo.ns");
dojo.require("dojo.widget.Manager");
dojo.require("dojo.event.*");
dojo.require("dojo.a11y");
dojo.declare("dojo.widget.Widget", null, function () {
	this.children = [];
	this.extraArgs = {};
}, {parent:null, isTopLevel:false, disabled:false, isContainer:false, widgetId:"", widgetType:"Widget", ns:"dojo", getNamespacedType:function () {
	return (this.ns ? this.ns + ":" + this.widgetType : this.widgetType).toLowerCase();
}, toString:function () {
	return "[Widget " + this.getNamespacedType() + ", " + (this.widgetId || "NO ID") + "]";
}, repr:function () {
	return this.toString();
}, enable:function () {
	this.disabled = false;
}, disable:function () {
	this.disabled = true;
}, onResized:function () {
	this.notifyChildrenOfResize();
}, notifyChildrenOfResize:function () {
	for (var i = 0; i < this.children.length; i++) {
		var child = this.children[i];
		if (child.onResized) {
			child.onResized();
		}
	}
}, create:function (args, fragment, parent, ns) {
	if (ns) {
		this.ns = ns;
	}
	this.satisfyPropertySets(args, fragment, parent);
	this.mixInProperties(args, fragment, parent);
	this.postMixInProperties(args, fragment, parent);
	dojo.widget.manager.add(this);
	this.buildRendering(args, fragment, parent);
	this.initialize(args, fragment, parent);
	this.postInitialize(args, fragment, parent);
	this.postCreate(args, fragment, parent);
	return this;
}, destroy:function (finalize) {
	if (this.parent) {
		this.parent.removeChild(this);
	}
	this.destroyChildren();
	this.uninitialize();
	this.destroyRendering(finalize);
	dojo.widget.manager.removeById(this.widgetId);
}, destroyChildren:function () {
	var widget;
	var i = 0;
	while (this.children.length > i) {
		widget = this.children[i];
		if (widget instanceof dojo.widget.Widget) {
			this.removeChild(widget);
			widget.destroy();
			continue;
		}
		i++;
	}
}, getChildrenOfType:function (type, recurse) {
	var ret = [];
	var isFunc = dojo.lang.isFunction(type);
	if (!isFunc) {
		type = type.toLowerCase();
	}
	for (var x = 0; x < this.children.length; x++) {
		if (isFunc) {
			if (this.children[x] instanceof type) {
				ret.push(this.children[x]);
			}
		} else {
			if (this.children[x].widgetType.toLowerCase() == type) {
				ret.push(this.children[x]);
			}
		}
		if (recurse) {
			ret = ret.concat(this.children[x].getChildrenOfType(type, recurse));
		}
	}
	return ret;
}, getDescendants:function () {
	var result = [];
	var stack = [this];
	var elem;
	while ((elem = stack.pop())) {
		result.push(elem);
		if (elem.children) {
			dojo.lang.forEach(elem.children, function (elem) {
				stack.push(elem);
			});
		}
	}
	return result;
}, isFirstChild:function () {
	return this === this.parent.children[0];
}, isLastChild:function () {
	return this === this.parent.children[this.parent.children.length - 1];
}, satisfyPropertySets:function (args) {
	return args;
}, mixInProperties:function (args, frag) {
	if ((args["fastMixIn"]) || (frag["fastMixIn"])) {
		for (var x in args) {
			this[x] = args[x];
		}
		return;
	}
	var undef;
	var lcArgs = dojo.widget.lcArgsCache[this.widgetType];
	if (lcArgs == null) {
		lcArgs = {};
		for (var y in this) {
			lcArgs[((new String(y)).toLowerCase())] = y;
		}
		dojo.widget.lcArgsCache[this.widgetType] = lcArgs;
	}
	var visited = {};
	for (var x in args) {
		if (!this[x]) {
			var y = lcArgs[(new String(x)).toLowerCase()];
			if (y) {
				args[y] = args[x];
				x = y;
			}
		}
		if (visited[x]) {
			continue;
		}
		visited[x] = true;
		if ((typeof this[x]) != (typeof undef)) {
			if (typeof args[x] != "string") {
				this[x] = args[x];
			} else {
				if (dojo.lang.isString(this[x])) {
					this[x] = args[x];
				} else {
					if (dojo.lang.isNumber(this[x])) {
						this[x] = new Number(args[x]);
					} else {
						if (dojo.lang.isBoolean(this[x])) {
							this[x] = (args[x].toLowerCase() == "false") ? false : true;
						} else {
							if (dojo.lang.isFunction(this[x])) {
								if (args[x].search(/[^\w\.]+/i) == -1) {
									this[x] = dojo.evalObjPath(args[x], false);
								} else {
									var tn = dojo.lang.nameAnonFunc(new Function(args[x]), this);
									dojo.event.kwConnect({srcObj:this, srcFunc:x, adviceObj:this, adviceFunc:tn});
								}
							} else {
								if (dojo.lang.isArray(this[x])) {
									this[x] = args[x].split(";");
								} else {
									if (this[x] instanceof Date) {
										this[x] = new Date(Number(args[x]));
									} else {
										if (typeof this[x] == "object") {
											if (this[x] instanceof dojo.uri.Uri) {
												this[x] = dojo.uri.dojoUri(args[x]);
											} else {
												var pairs = args[x].split(";");
												for (var y = 0; y < pairs.length; y++) {
													var si = pairs[y].indexOf(":");
													if ((si != -1) && (pairs[y].length > si)) {
														this[x][pairs[y].substr(0, si).replace(/^\s+|\s+$/g, "")] = pairs[y].substr(si + 1);
													}
												}
											}
										} else {
											this[x] = args[x];
										}
									}
								}
							}
						}
					}
				}
			}
		} else {
			this.extraArgs[x.toLowerCase()] = args[x];
		}
	}
}, postMixInProperties:function (args, frag, parent) {
}, initialize:function (args, frag, parent) {
	return false;
}, postInitialize:function (args, frag, parent) {
	return false;
}, postCreate:function (args, frag, parent) {
	return false;
}, uninitialize:function () {
	return false;
}, buildRendering:function (args, frag, parent) {
	dojo.unimplemented("dojo.widget.Widget.buildRendering, on " + this.toString() + ", ");
	return false;
}, destroyRendering:function () {
	dojo.unimplemented("dojo.widget.Widget.destroyRendering");
	return false;
}, addedTo:function (parent) {
}, addChild:function (child) {
	dojo.unimplemented("dojo.widget.Widget.addChild");
	return false;
}, removeChild:function (widget) {
	for (var x = 0; x < this.children.length; x++) {
		if (this.children[x] === widget) {
			this.children.splice(x, 1);
			widget.parent = null;
			break;
		}
	}
	return widget;
}, getPreviousSibling:function () {
	var idx = this.getParentIndex();
	if (idx <= 0) {
		return null;
	}
	return this.parent.children[idx - 1];
}, getSiblings:function () {
	return this.parent.children;
}, getParentIndex:function () {
	return dojo.lang.indexOf(this.parent.children, this, true);
}, getNextSibling:function () {
	var idx = this.getParentIndex();
	if (idx == this.parent.children.length - 1) {
		return null;
	}
	if (idx < 0) {
		return null;
	}
	return this.parent.children[idx + 1];
}});
dojo.widget.lcArgsCache = {};
dojo.widget.tags = {};
dojo.widget.tags.addParseTreeHandler = function (type) {
	dojo.deprecated("addParseTreeHandler", ". ParseTreeHandlers are now reserved for components. Any unfiltered DojoML tag without a ParseTreeHandler is assumed to be a widget", "0.5");
};
dojo.widget.tags["dojo:propertyset"] = function (fragment, widgetParser, parentComp) {
	var properties = widgetParser.parseProperties(fragment["dojo:propertyset"]);
};
dojo.widget.tags["dojo:connect"] = function (fragment, widgetParser, parentComp) {
	var properties = widgetParser.parseProperties(fragment["dojo:connect"]);
};
dojo.widget.buildWidgetFromParseTree = function (type, frag, parser, parentComp, insertionIndex, localProps) {
	dojo.a11y.setAccessibleMode();
	var stype = type.split(":");
	stype = (stype.length == 2) ? stype[1] : type;
	var localProperties = localProps || parser.parseProperties(frag[frag["ns"] + ":" + stype]);
	var twidget = dojo.widget.manager.getImplementation(stype, null, null, frag["ns"]);
	if (!twidget) {
		throw new Error("cannot find \"" + type + "\" widget");
	} else {
		if (!twidget.create) {
			throw new Error("\"" + type + "\" widget object has no \"create\" method and does not appear to implement *Widget");
		}
	}
	localProperties["dojoinsertionindex"] = insertionIndex;
	var ret = twidget.create(localProperties, frag, parentComp, frag["ns"]);
	return ret;
};
dojo.widget.defineWidget = function (widgetClass, renderer, superclasses, init, props) {
	if (dojo.lang.isString(arguments[3])) {
		dojo.widget._defineWidget(arguments[0], arguments[3], arguments[1], arguments[4], arguments[2]);
	} else {
		var args = [arguments[0]], p = 3;
		if (dojo.lang.isString(arguments[1])) {
			args.push(arguments[1], arguments[2]);
		} else {
			args.push("", arguments[1]);
			p = 2;
		}
		if (dojo.lang.isFunction(arguments[p])) {
			args.push(arguments[p], arguments[p + 1]);
		} else {
			args.push(null, arguments[p]);
		}
		dojo.widget._defineWidget.apply(this, args);
	}
};
dojo.widget.defineWidget.renderers = "html|svg|vml";
dojo.widget._defineWidget = function (widgetClass, renderer, superclasses, init, props) {
	var module = widgetClass.split(".");
	var type = module.pop();
	var regx = "\\.(" + (renderer ? renderer + "|" : "") + dojo.widget.defineWidget.renderers + ")\\.";
	var r = widgetClass.search(new RegExp(regx));
	module = (r < 0 ? module.join(".") : widgetClass.substr(0, r));
	dojo.widget.manager.registerWidgetPackage(module);
	var pos = module.indexOf(".");
	var nsName = (pos > -1) ? module.substring(0, pos) : module;
	props = (props) || {};
	props.widgetType = type;
	if ((!init) && (props["classConstructor"])) {
		init = props.classConstructor;
		delete props.classConstructor;
	}
	dojo.declare(widgetClass, superclasses, init, props);
};

Other Struts examples (source code examples)

Here is a short list of links related to this Struts Widget.js source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.