/home/ivan/src/sit/branches/3.x/scripts/dojo/src/widget/RadioGroup.js

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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.widget.RadioGroup");
dojo.require("dojo.lang.common");
dojo.require("dojo.event.browser");
dojo.require("dojo.html.selection");
dojo.require("dojo.widget.*");
dojo.require("dojo.widget.HtmlWidget");
dojo.widget.defineWidget("dojo.widget.RadioGroup", dojo.widget.HtmlWidget, function () {
    this.selectedItem = null;
    this.items = [];
    this.selected = [];
    this.groupCssClass = "radioGroup";
    this.selectedCssClass = "selected";
    this.itemContentCssClass = "itemContent";
}, {isContainer:false, templatePath:null, templateCssPath:null, postCreate:function () {
    this._parseStructure();
    dojo.html.addClass(this.domNode, this.groupCssClass);
    this._setupChildren();
    dojo.event.browser.addListener(this.domNode, "onclick", dojo.lang.hitch(this, "onSelect"));
    if (this.selectedItem) {
        this._selectItem(this.selectedItem);
    }
}, _parseStructure:function () {
    if (this.domNode.tagName.toLowerCase() != "ul" && this.domNode.tagName.toLowerCase() != "ol") {
        dojo.raise("RadioGroup: Expected ul or ol content.");
        return;
    }
    this.items = [];
    var nl = this.domNode.getElementsByTagName("li");
    for (var i = 0; i < nl.length; i++) {
        if (nl[i].parentNode == this.domNode) {
            this.items.push(nl[i]);
        }
    }
}, add:function (node) {
    if (node.parentNode != this.domNode) {
        this.domNode.appendChild(node);
    }
    this.items.push(node);
    this._setup(node);
}, remove:function (node) {
    var idx = -1;
    for (var i = 0; i < this.items.length; i++) {
        if (this.items[i] == node) {
            idx = i;
            break;
        }
    }
    if (idx < 0) {
        return;
    }
    this.items.splice(idx, 1);
    node.parentNode.removeChild(node);
}, clear:function () {
    for (var i = 0; i < this.items.length; i++) {
        this.domNode.removeChild(this.items[i]);
    }
    this.items = [];
}, clearSelections:function () {
    for (var i = 0; i < this.items.length; i++) {
        dojo.html.removeClass(this.items[i], this.selectedCssClass);
    }
    this.selectedItem = null;
}, _setup:function (node) {
    var span = document.createElement("span");
    dojo.html.disableSelection(span);
    dojo.html.addClass(span, this.itemContentCssClass);
    dojo.dom.moveChildren(node, span);
    node.appendChild(span);
    if (this.selected.length > 0) {
        var uid = dojo.html.getAttribute(node, "id");
        if (uid && uid == this.selected) {
            this.selectedItem = node;
        }
    }
    dojo.event.browser.addListener(node, "onclick", dojo.lang.hitch(this, "onItemSelect"));
    if (dojo.html.hasAttribute(node, "onitemselect")) {
        var tn = dojo.lang.nameAnonFunc(new Function(dojo.html.getAttribute(node, "onitemselect")), this);
        dojo.event.browser.addListener(node, "onclick", dojo.lang.hitch(this, tn));
    }
}, _setupChildren:function () {
    for (var i = 0; i < this.items.length; i++) {
        this._setup(this.items[i]);
    }
}, _selectItem:function (node, event, nofire) {
    if (this.selectedItem) {
        dojo.html.removeClass(this.selectedItem, this.selectedCssClass);
    }
    this.selectedItem = node;
    dojo.html.addClass(this.selectedItem, this.selectedCssClass);
    if (!dj_undef("currentTarget", event)) {
        return;
    }
    if (!nofire) {
        if (dojo.render.html.ie) {
            this.selectedItem.fireEvent("onclick");
        } else {
            var e = document.createEvent("MouseEvents");
            e.initEvent("click", true, false);
            this.selectedItem.dispatchEvent(e);
        }
    }
}, getValue:function () {
    return this.selectedItem;
}, onSelect:function (e) {
}, onItemSelect:function (e) {
    if (!dj_undef("currentTarget", e)) {
        this._selectItem(e.currentTarget, e);
    }
}});