| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| var App = require('app'); |
| |
| /** |
| @extends Ember.Mixin |
| |
| Implements common pagination management properties for controllers. |
| */ |
| App.Pagination = Em.Mixin.create({ |
| |
| total: 0, |
| rangeStart: 0, |
| pageSize: 0, |
| |
| rangeStop: function() { |
| var rangeStop = this.get('rangeStart') + this.get('pageSize'), |
| total = this.get('total'); |
| if (rangeStop < total) { |
| return rangeStop; |
| } |
| return total; |
| }.property('total', 'rangeStart', 'pageSize').cacheable(), |
| |
| hasPrevious: function() { |
| return this.get('rangeStart') > 0; |
| }.property('rangeStart').cacheable(), |
| |
| hasNext: function() { |
| return this.get('rangeStop') < this.get('total'); |
| }.property('rangeStop', 'total').cacheable(), |
| |
| nextPage: function() { |
| if (this.get('hasNext')) { |
| this.incrementProperty('rangeStart', this.get('pageSize')); |
| } |
| }, |
| |
| previousPage: function() { |
| if (this.get('hasPrevious')) { |
| this.decrementProperty('rangeStart', this.get('pageSize')); |
| } |
| }, |
| |
| currentPage: function () { |
| return this.get('rangeStop') / this.get('pageSize'); |
| }.property('rangeStop', 'pageSize').cacheable(), |
| |
| startPosition: function() { |
| if (this.get('total') == 0) |
| return 0; |
| return this.get('rangeStart') + 1; |
| }.property('rangeStart', 'total').cacheable(), |
| |
| totalPages: function() { |
| return Math.ceil(this.get('total') / this.get('pageSize')); |
| }.property('total', 'pageSize').cacheable(), |
| |
| // changeContent: function() { |
| //// this.didRequestRange(this.get('rangeStart'), this.get('rangeStop')); |
| // }.observes('total', 'rangeStart', 'rangeStop'), |
| |
| pageSizeChange: function() { |
| this.set('rangeStart', 0); |
| }.observes('pageSize') |
| |
| }); |