73 lines
1.9 KiB
JavaScript
73 lines
1.9 KiB
JavaScript
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/*
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Copyright (c) 2004-2006, The Dojo Foundation
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All Rights Reserved.
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Licensed under the Academic Free License version 2.1 or above OR the
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modified BSD license. For more information on Dojo licensing, see:
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http://dojotoolkit.org/community/licensing.shtml
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*/
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dojo.provide("dojo.AdapterRegistry");
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dojo.require("dojo.lang.func");
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dojo.AdapterRegistry = function(){
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/***
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A registry to facilitate adaptation.
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Pairs is an array of [name, check, wrap] triples
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All check/wrap functions in this registry should be of the same arity.
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***/
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this.pairs = [];
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}
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dojo.lang.extend(dojo.AdapterRegistry, {
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register: function (name, check, wrap, /* optional */ override){
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/***
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The check function should return true if the given arguments are
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appropriate for the wrap function.
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If override is given and true, the check function will be given
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highest priority. Otherwise, it will be the lowest priority
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adapter.
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***/
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if (override) {
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this.pairs.unshift([name, check, wrap]);
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} else {
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this.pairs.push([name, check, wrap]);
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}
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},
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match: function (/* ... */) {
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/***
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Find an adapter for the given arguments.
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If no suitable adapter is found, throws NotFound.
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***/
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for(var i = 0; i < this.pairs.length; i++){
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var pair = this.pairs[i];
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if(pair[1].apply(this, arguments)){
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return pair[2].apply(this, arguments);
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}
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}
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throw new Error("No match found");
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// dojo.raise("No match found");
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},
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unregister: function (name) {
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/***
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Remove a named adapter from the registry
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***/
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for(var i = 0; i < this.pairs.length; i++){
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var pair = this.pairs[i];
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if(pair[0] == name){
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this.pairs.splice(i, 1);
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return true;
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}
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}
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return false;
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}
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});
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