85 lines
2.1 KiB
JavaScript
85 lines
2.1 KiB
JavaScript
(function (global) {
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"use strict";
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function empty(obj) {
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var key;
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for (key in obj) if (obj.hasOwnProperty(key)) return false;
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return true;
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}
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var Ember = global.Ember,
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get = Ember.get, set = Ember.set;
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var BufferedProxy = Ember.Mixin.create({
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buffer: null,
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hasBufferedChanges: false,
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unknownProperty: function (key) {
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var buffer = this.buffer;
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return buffer && buffer.hasOwnProperty(key) ? buffer[key] : this._super(key);
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},
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setUnknownProperty: function (key, value) {
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if (!this.buffer) this.buffer = {};
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var buffer = this.buffer,
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content = this.get('content'),
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current = content && get(content, key),
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previous = buffer.hasOwnProperty(key) ? buffer[key] : current;
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if (previous === value) return;
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if (current === value) {
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delete buffer[key];
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if (empty(buffer)) {
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this.set('hasBufferedChanges', false);
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}
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} else {
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buffer[key] = value;
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this.set('hasBufferedChanges', true);
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}
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this.notifyPropertyChange(key);
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return value;
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},
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applyBufferedChanges: function() {
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var buffer = this.buffer,
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content = this.get('content'),
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key;
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for (key in buffer) {
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if (!buffer.hasOwnProperty(key)) continue;
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set(content, key, buffer[key]);
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}
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this.buffer = {};
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this.set('hasBufferedChanges', false);
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},
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discardBufferedChanges: function() {
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var buffer = this.buffer,
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content = this.get('content'),
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key;
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for (key in buffer) {
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if (!buffer.hasOwnProperty(key)) continue;
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delete buffer[key];
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this.notifyPropertyChange(key);
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}
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this.set('hasBufferedChanges', false);
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}
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});
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// CommonJS module
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if (typeof module !== 'undefined' && module.exports) {
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module.exports = BufferedProxy;
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} else if (typeof define === "function" && define.amd) {
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define("buffered-proxy", function (require, exports, module) {
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return BufferedProxy;
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});
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} else {
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global.BufferedProxy = BufferedProxy;
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}
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}(this));
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