| /** |
| * 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'); |
| |
| /** |
| * Mixin should be used for Em.View of table that uses server to filter, sort, paginate content |
| */ |
| App.TableServerViewMixin = Em.Mixin.create({ |
| filteringComplete: true, |
| timeOut: null, |
| /** |
| * filter delay time, used to combine filters change into one content update |
| */ |
| filterWaitingTime: 500, |
| |
| /** |
| * count of filtered items |
| */ |
| filteredCount: Em.computed.alias('controller.filteredCount'), |
| /** |
| * total count of items |
| */ |
| totalCount: Em.computed.alias('controller.totalCount'), |
| |
| /** |
| * data requested from server |
| */ |
| content: Em.computed.alias('controller.content'), |
| |
| /** |
| * content already filtered on server-side |
| */ |
| filteredContent: Em.computed.alias('content'), |
| /** |
| * sort and slice recieved content by pagination parameters |
| */ |
| pageContent: function () { |
| var content = this.get('filteredContent').toArray(); |
| if (content.length > ((this.get('endIndex') - this.get('startIndex')) + 1)) { |
| content = content.slice(0, (this.get('endIndex') - this.get('startIndex')) + 1); |
| } |
| return content.sort(function (a, b) { |
| return a.get('index') - b.get('index'); |
| }); |
| }.property('filteredContent.length'), |
| |
| /** |
| * compute applied filter and run content update from server |
| * @param iColumn |
| * @param value |
| * @param type |
| */ |
| updateFilter: function (iColumn, value, type) { |
| // Do not even trigger update flow if it's a blank update |
| if (this.isBlankFilterUpdate(iColumn, value, type)) { return; } |
| |
| var self = this; |
| this.set('controller.resetStartIndex', false); |
| if (!this.get('filteringComplete')) { |
| clearTimeout(this.get('timeOut')); |
| this.set('timeOut', setTimeout(function () { |
| self.updateFilter(iColumn, value, type); |
| }, this.get('filterWaitingTime'))); |
| } else { |
| clearTimeout(this.get('timeOut')); |
| this.set('controller.resetStartIndex', true); |
| //save filter only when it's applied |
| this.saveFilterConditions(iColumn, value, type, false); |
| this.refresh(); |
| } |
| return true; |
| }, |
| |
| updateComboFilter: function(filterConditions) { |
| clearTimeout(this.get('timeOut')); |
| this.set('controller.resetStartIndex', true); |
| this.set('filterConditions', filterConditions); |
| this.saveAllFilterConditions(); |
| this.refresh(); |
| }, |
| |
| /** |
| * 1) Has previous saved filter |
| * 2) Value to update is empty |
| * 3) Value to update is same as before |
| * Returns true if (!1&&2 || 1&&3) |
| * @param iColumn |
| * @param value |
| * @param type |
| * @returns {boolean|*} |
| */ |
| isBlankFilterUpdate: function(iColumn, value, type) { |
| var result = false; |
| var filterConfitions = this.get('filterConditions'); |
| var filterCondition = filterConfitions? filterConfitions.findProperty('iColumn', iColumn) : null; |
| if ((!filterCondition && Em.isEmpty(value)) |
| || (filterCondition && filterCondition.value == value) |
| || (filterCondition && typeof filterCondition.value == 'object' |
| && JSON.stringify(filterCondition.value) == JSON.stringify(value))) { |
| result = true; |
| } |
| return result; |
| }, |
| |
| /** |
| * success callback for updater request |
| */ |
| updaterSuccessCb: function () { |
| this.set('filteringComplete', true); |
| this.propertyDidChange('pageContent'); |
| App.loadTimer.finish('Hosts Page'); |
| }, |
| |
| /** |
| * error callback for updater request |
| */ |
| updaterErrorCb: function () { |
| this.set('requestError', arguments); |
| }, |
| |
| /** |
| * synchronize properties of view with controller to generate query parameters |
| */ |
| updatePagination: function (key) { |
| if (!Em.isNone(this.get('displayLength'))) { |
| App.db.setDisplayLength(this.get('controller.name'), this.get('displayLength')); |
| } |
| if (!Em.isNone(this.get('startIndex'))) { |
| App.db.setStartIndex(this.get('controller.name'), this.get('startIndex')); |
| } |
| |
| if (key !== 'SKIP_REFRESH') { |
| this.refresh(); |
| } |
| }, |
| |
| /** |
| * Placeholder for `saveStartIndex` |
| */ |
| saveStartIndex: Em.K, |
| |
| /** |
| * when new filter applied page index should be reset to first page |
| */ |
| resetStartIndex: function () { |
| if (this.get('controller.resetStartIndex') && this.get('filteredCount') > 0) { |
| this.set('startIndex', 1); |
| this.saveStartIndex(); |
| this.updatePagination('SKIP_REFRESH'); |
| } |
| }.observes('controller.resetStartIndex') |
| }); |