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Merge pull request Addepar#39 from li-qiang/refactor-grouped-row-chil…
…dren-loading Can lazily load grouping-row and its children
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| import Ember from 'ember'; | ||
| import LazyGroupRowArray from './lazy-group-row-array'; | ||
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| export default Ember.ObjectProxy.extend({ | ||
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| loadChildren: Ember.K, | ||
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| groupingMetadata: null, | ||
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| groupingLevel: 0, | ||
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| groupingName: Ember.computed(function () { | ||
| return Ember.get(this.get('groupingMetadata').objectAt(this.get('groupingLevel')), 'id'); | ||
| }).property('groupingMetadata', 'groupingLevel'), | ||
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| selfQuery: Ember.computed(function () { | ||
| var query = {}; | ||
| var groupingName = this.get('groupingName'); | ||
| query[groupingName] = this.get('content.id'); | ||
| return Ember.setProperties(query, this.get('parentQuery') || {}); | ||
| }).property('content'), | ||
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| children: Ember.computed(function () { | ||
| var lazyArray = LazyGroupRowArray.create({ | ||
| loadChildren: this.loadChildren, | ||
| groupingLevel: this.get('groupingLevel') + 1, | ||
| groupingMetadata: this.get('groupingMetadata'), | ||
| parentQuery: this.get('selfQuery') | ||
| }); | ||
| return lazyArray; | ||
| }).property() | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| import Ember from 'ember'; | ||
| import GroupingRowProxy from './grouping-row-proxy'; | ||
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| export default Ember.ArrayProxy.extend({ | ||
| loadChildren: Ember.K, | ||
| groupingLevel: 0, | ||
| groupingMetadata: null, | ||
| parentQuery: {}, | ||
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| init: function () { | ||
| this.set('content', Ember.A()); | ||
| this._super(); | ||
| this.addLoadingPlaceHolder(); | ||
| }, | ||
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| loadOneChunk: function(chunkIndex) { | ||
| return this.loadChildren(chunkIndex, this.get('parentQuery') || {}); | ||
| }, | ||
| wrapLoadedContent: function (row) { | ||
| if (this.get('isGroupingRow')) { | ||
| var groupingMetadata = this.get('groupingMetadata'); | ||
| return GroupingRowProxy.create({ | ||
| groupingMetadata: groupingMetadata, | ||
| groupingLevel: this.get('groupingLevel'), | ||
| content: row, | ||
| loadChildren: this.loadChildren, | ||
| parentQuery: this.get('parentQuery') | ||
| }); | ||
| } else { | ||
| return row; | ||
| } | ||
| }, | ||
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| /*---------------Override ArrayProxy -----------------------*/ | ||
| objectAtContent: function (index) { | ||
| var object = this._super(index); | ||
| if (object.get('isLoading') && !this.get('_hasInProgressLoading')) { | ||
| this.triggerLoading(index); | ||
| } | ||
| return object; | ||
| }, | ||
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| /*---------------Private methods -----------------------*/ | ||
| isGroupingRow: Ember.computed(function() { | ||
| return this.get('groupingLevel') < this.get('groupingMetadata.length'); | ||
| }).property('groupingMetadata.[]', 'groupingLevel'), | ||
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| triggerLoading: function (index) { | ||
| this.set('_hasInProgressLoading', true); | ||
| var chunkIndex = this.chunkIndex(index); | ||
| var self = this; | ||
| this.loadOneChunk(chunkIndex).then(function (result) { | ||
| self.onOneChunkLoaded(result); | ||
| self.set('_hasInProgressLoading', false); | ||
| }); | ||
| }, | ||
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| chunkIndex: function (index) { | ||
| var chunkSize = this.get('chunkSize'); | ||
| if (!chunkSize) { | ||
| return 0; | ||
| } | ||
| return Math.floor(index / chunkSize); | ||
| }, | ||
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| onOneChunkLoaded: function (result) { | ||
| this.setProperties(result.meta); | ||
| var chunk = result.content; | ||
| if (chunk.get('length') > 0) { | ||
| this.updatePlaceHolderWithContent(this.wrapLoadedContent(chunk.get('firstObject'))); | ||
| var self = this; | ||
| var chunkObjects = chunk.slice(1).map(function (x) { | ||
| return Ember.ObjectProxy.create({"isLoaded": true, "isError": false, "content": self.wrapLoadedContent(x)}); | ||
| }); | ||
| this.pushObjects(chunkObjects); | ||
| if (this.get('length') < this.get('totalCount')) { | ||
| this.addLoadingPlaceHolder(); | ||
| } | ||
| } else { | ||
| this.removeObject(this.get('lastObject')); | ||
| } | ||
| }, | ||
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| addLoadingPlaceHolder: function () { | ||
| this.pushObject(Ember.ObjectProxy.create({"isLoading": true, "isLoaded": false})); | ||
| }, | ||
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| updatePlaceHolderWithContent: function (content) { | ||
| var lastObject = this.get('lastObject'); | ||
| lastObject.setProperties({ | ||
| 'content': content, | ||
| 'isLoading': false, | ||
| 'isLoaded': true | ||
| }); | ||
| }, | ||
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| totalCount: null, | ||
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| chunkSize: null, | ||
|
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| _hasInProgressLoading: false | ||
| }); |
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