162 lines
4.3 KiB
JavaScript
162 lines
4.3 KiB
JavaScript
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define("dijit/registry", [
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"dojo/_base/array", // array.forEach array.map
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"dojo/sniff", // has("ie")
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"dojo/_base/unload", // unload.addOnWindowUnload
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"dojo/_base/window", // win.body
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"./main" // dijit._scopeName
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], function(array, has, unload, win, dijit){
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// module:
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// dijit/registry
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var _widgetTypeCtr = {}, hash = {};
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var registry = {
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// summary:
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// Registry of existing widget on page, plus some utility methods.
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// length: Number
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// Number of registered widgets
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length: 0,
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add: function(widget){
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// summary:
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// Add a widget to the registry. If a duplicate ID is detected, a error is thrown.
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// widget: dijit/_WidgetBase
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// Any dijit/_WidgetBase subclass.
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if(hash[widget.id]){
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throw new Error("Tried to register widget with id==" + widget.id + " but that id is already registered");
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}
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hash[widget.id] = widget;
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this.length++;
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},
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remove: function(/*String*/ id){
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// summary:
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// Remove a widget from the registry. Does not destroy the widget; simply
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// removes the reference.
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if(hash[id]){
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delete hash[id];
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this.length--;
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}
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},
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byId: function(/*String|Widget*/ id){
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// summary:
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// Find a widget by it's id.
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// If passed a widget then just returns the widget.
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return typeof id == "string" ? hash[id] : id; // dijit/_WidgetBase
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},
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byNode: function(/*DOMNode*/ node){
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// summary:
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// Returns the widget corresponding to the given DOMNode
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return hash[node.getAttribute("widgetId")]; // dijit/_WidgetBase
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},
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toArray: function(){
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// summary:
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// Convert registry into a true Array
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//
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// example:
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// Work with the widget .domNodes in a real Array
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// | array.map(registry.toArray(), function(w){ return w.domNode; });
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var ar = [];
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for(var id in hash){
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ar.push(hash[id]);
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}
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return ar; // dijit/_WidgetBase[]
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},
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getUniqueId: function(/*String*/widgetType){
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// summary:
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// Generates a unique id for a given widgetType
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var id;
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do{
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id = widgetType + "_" +
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(widgetType in _widgetTypeCtr ?
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++_widgetTypeCtr[widgetType] : _widgetTypeCtr[widgetType] = 0);
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}while(hash[id]);
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return dijit._scopeName == "dijit" ? id : dijit._scopeName + "_" + id; // String
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},
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findWidgets: function(root, skipNode){
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// summary:
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// Search subtree under root returning widgets found.
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// Doesn't search for nested widgets (ie, widgets inside other widgets).
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// root: DOMNode
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// Node to search under.
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// skipNode: DOMNode
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// If specified, don't search beneath this node (usually containerNode).
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var outAry = [];
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function getChildrenHelper(root){
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for(var node = root.firstChild; node; node = node.nextSibling){
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if(node.nodeType == 1){
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var widgetId = node.getAttribute("widgetId");
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if(widgetId){
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var widget = hash[widgetId];
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if(widget){ // may be null on page w/multiple dojo's loaded
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outAry.push(widget);
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}
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}else if(node !== skipNode){
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getChildrenHelper(node);
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}
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}
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}
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}
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getChildrenHelper(root);
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return outAry;
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},
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_destroyAll: function(){
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// summary:
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// Code to destroy all widgets and do other cleanup on page unload
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// Clean up focus manager lingering references to widgets and nodes
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dijit._curFocus = null;
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dijit._prevFocus = null;
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dijit._activeStack = [];
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// Destroy all the widgets, top down
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array.forEach(registry.findWidgets(win.body()), function(widget){
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// Avoid double destroy of widgets like Menu that are attached to <body>
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// even though they are logically children of other widgets.
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if(!widget._destroyed){
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if(widget.destroyRecursive){
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widget.destroyRecursive();
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}else if(widget.destroy){
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widget.destroy();
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}
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}
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});
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},
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getEnclosingWidget: function(/*DOMNode*/ node){
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// summary:
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// Returns the widget whose DOM tree contains the specified DOMNode, or null if
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// the node is not contained within the DOM tree of any widget
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while(node){
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var id = node.nodeType == 1 && node.getAttribute("widgetId");
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if(id){
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return hash[id];
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}
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node = node.parentNode;
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}
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return null;
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},
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// In case someone needs to access hash.
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// Actually, this is accessed from WidgetSet back-compatibility code
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_hash: hash
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};
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dijit.registry = registry;
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return registry;
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});
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