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/*
        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.xml.Parse");
dojo.require("dojo.dom");
dojo.xml.Parse = function () {
        var isIE = ((dojo.render.html.capable) && (dojo.render.html.ie));
        function getTagName(node) {
                try {
                        return node.tagName.toLowerCase();
                }
                catch (e) {
                        return "";
                }
        }
        function getDojoTagName(node) {
                var tagName = getTagName(node);
                if (!tagName) {
                        return "";
                }
                if ((dojo.widget) && (dojo.widget.tags[tagName])) {
                        return tagName;
                }
                var p = tagName.indexOf(":");
                if (p >= 0) {
                        return tagName;
                }
                if (tagName.substr(0, 5) == "dojo:") {
                        return tagName;
                }
                if (dojo.render.html.capable && dojo.render.html.ie && node.scopeName != "HTML") {
                        return node.scopeName.toLowerCase() + ":" + tagName;
                }
                if (tagName.substr(0, 4) == "dojo") {
                        return "dojo:" + tagName.substring(4);
                }
                var djt = node.getAttribute("dojoType") || node.getAttribute("dojotype");
                if (djt) {
                        if (djt.indexOf(":") < 0) {
                                djt = "dojo:" + djt;
                        }
                        return djt.toLowerCase();
                }
                djt = node.getAttributeNS && node.getAttributeNS(dojo.dom.dojoml, "type");
                if (djt) {
                        return "dojo:" + djt.toLowerCase();
                }
                try {
                        djt = node.getAttribute("dojo:type");
                }
                catch (e) {
                }
                if (djt) {
                        return "dojo:" + djt.toLowerCase();
                }
                if ((dj_global["djConfig"]) && (!djConfig["ignoreClassNames"])) {
                        var classes = node.className || node.getAttribute("class");
                        if ((classes) && (classes.indexOf) && (classes.indexOf("dojo-") != -1)) {
                                var aclasses = classes.split(" ");
                                for (var x = 0, c = aclasses.length; x < c; x++) {
                                        if (aclasses[x].slice(0, 5) == "dojo-") {
                                                return "dojo:" + aclasses[x].substr(5).toLowerCase();
                                        }
                                }
                        }
                }
                return "";
        }
        this.parseElement = function (node, hasParentNodeSet, optimizeForDojoML, thisIdx) {
                var tagName = getTagName(node);
                if (isIE && tagName.indexOf("/") == 0) {
                        return null;
                }
                try {
                        var attr = node.getAttribute("parseWidgets");
                        if (attr && attr.toLowerCase() == "false") {
                                return {};
                        }
                }
                catch (e) {
                }
                var process = true;
                if (optimizeForDojoML) {
                        var dojoTagName = getDojoTagName(node);
                        tagName = dojoTagName || tagName;
                        process = Boolean(dojoTagName);
                }
                var parsedNodeSet = {};
                parsedNodeSet[tagName] = [];
                var pos = tagName.indexOf(":");
                if (pos > 0) {
                        var ns = tagName.substring(0, pos);
                        parsedNodeSet["ns"] = ns;
                        if ((dojo.ns) && (!dojo.ns.allow(ns))) {
                                process = false;
                        }
                }
                if (process) {
                        var attributeSet = this.parseAttributes(node);
                        for (var attr in attributeSet) {
                                if ((!parsedNodeSet[tagName][attr]) || (typeof parsedNodeSet[tagName][attr] != "array")) {
                                        parsedNodeSet[tagName][attr] = [];
                                }
                                parsedNodeSet[tagName][attr].push(attributeSet[attr]);
                        }
                        parsedNodeSet[tagName].nodeRef = node;
                        parsedNodeSet.tagName = tagName;
                        parsedNodeSet.index = thisIdx || 0;
                }
                var count = 0;
                for (var i = 0; i < node.childNodes.length; i++) {
                        var tcn = node.childNodes.item(i);
                        switch (tcn.nodeType) {
                          case dojo.dom.ELEMENT_NODE:
                                var ctn = getDojoTagName(tcn) || getTagName(tcn);
                                if (!parsedNodeSet[ctn]) {
                                        parsedNodeSet[ctn] = [];
                                }
                                parsedNodeSet[ctn].push(this.parseElement(tcn, true, optimizeForDojoML, count));
                                if ((tcn.childNodes.length == 1) && (tcn.childNodes.item(0).nodeType == dojo.dom.TEXT_NODE)) {
                                        parsedNodeSet[ctn][parsedNodeSet[ctn].length - 1].value = tcn.childNodes.item(0).nodeValue;
                                }
                                count++;
                                break;
                          case dojo.dom.TEXT_NODE:
                                if (node.childNodes.length == 1) {
                                        parsedNodeSet[tagName].push({value:node.childNodes.item(0).nodeValue});
                                }
                                break;
                          default:
                                break;
                        }
                }
                return parsedNodeSet;
        };
        this.parseAttributes = function (node) {
                var parsedAttributeSet = {};
                var atts = node.attributes;
                var attnode, i = 0;
                while ((attnode = atts[i++])) {
                        if (isIE) {
                                if (!attnode) {
                                        continue;
                                }
                                if ((typeof attnode == "object") && (typeof attnode.nodeValue == "undefined") || (attnode.nodeValue == null) || (attnode.nodeValue == "")) {
                                        continue;
                                }
                        }
                        var nn = attnode.nodeName.split(":");
                        nn = (nn.length == 2) ? nn[1] : attnode.nodeName;
                        parsedAttributeSet[nn] = {value:attnode.nodeValue};
                }
                return parsedAttributeSet;
        };
};