angular2
Version:
Angular 2 - a web framework for modern web apps
82 lines • 10.1 kB
JavaScript
;"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var lang_1 = require('angular2/src/facade/lang');
var exceptions_1 = require('angular2/src/facade/exceptions');
var collection_1 = require('angular2/src/facade/collection');
var di_1 = require('angular2/src/core/di');
/**
* A repository of different Map diffing strategies used by NgClass, NgStyle, and others.
*/
var KeyValueDiffers = (function () {
function KeyValueDiffers(factories) {
this.factories = factories;
}
KeyValueDiffers.create = function (factories, parent) {
if (lang_1.isPresent(parent)) {
var copied = collection_1.ListWrapper.clone(parent.factories);
factories = factories.concat(copied);
return new KeyValueDiffers(factories);
}
else {
return new KeyValueDiffers(factories);
}
};
/**
* Takes an array of {@link KeyValueDifferFactory} and returns a provider used to extend the
* inherited {@link KeyValueDiffers} instance with the provided factories and return a new
* {@link KeyValueDiffers} instance.
*
* The following example shows how to extend an existing list of factories,
* which will only be applied to the injector for this component and its children.
* This step is all that's required to make a new {@link KeyValueDiffer} available.
*
* ### Example
*
* ```
* @Component({
* viewProviders: [
* KeyValueDiffers.extend([new ImmutableMapDiffer()])
* ]
* })
* ```
*/
KeyValueDiffers.extend = function (factories) {
return new di_1.Provider(KeyValueDiffers, {
useFactory: function (parent) {
if (lang_1.isBlank(parent)) {
// Typically would occur when calling KeyValueDiffers.extend inside of dependencies passed
// to
// bootstrap(), which would override default pipes instead of extending them.
throw new exceptions_1.BaseException('Cannot extend KeyValueDiffers without a parent injector');
}
return KeyValueDiffers.create(factories, parent);
},
// Dependency technically isn't optional, but we can provide a better error message this way.
deps: [[KeyValueDiffers, new di_1.SkipSelfMetadata(), new di_1.OptionalMetadata()]]
});
};
KeyValueDiffers.prototype.find = function (kv) {
var factory = this.factories.find(function (f) { return f.supports(kv); });
if (lang_1.isPresent(factory)) {
return factory;
}
else {
throw new exceptions_1.BaseException("Cannot find a differ supporting object '" + kv + "'");
}
};
KeyValueDiffers = __decorate([
lang_1.CONST(),
__metadata('design:paramtypes', [Array])
], KeyValueDiffers);
return KeyValueDiffers;
}());
exports.KeyValueDiffers = KeyValueDiffers;
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