[FEATURE] Two-way sync between rows and model

.travis.yml

@@ -36,10 +36,10 @@ before_install:
   - export DISPLAY=:99.0
   - sh -e /etc/init.d/xvfb start
   - npm config set spin false
-  - npm install -g bower
-  - bower --version
   - npm install -g npm@^3
+  - npm install -g bower
   - npm install -g codeclimate-test-reporter
+  - bower --version
 
 install:
   - npm install

addon/-private/global-options.js

@@ -0,0 +1,11 @@
+import Ember from 'ember';
+import config from 'ember-get-config';
+
+const assign = Ember.assign || Ember.merge;
+const globalOptions = config['ember-light-table'] || {};
+
+export default globalOptions;
+
+export function mergeOptionsWithGlobals(options) {
+  return assign(assign({}, globalOptions), options);
+}

addon/-private/sync-array-proxy.js

@@ -0,0 +1,89 @@
+import Ember from 'ember';
+
+const {
+  assert,
+  isArray
+} = Ember;
+
+export default Ember.ArrayProxy.extend({
+  /**
+   * The model that will be synchronized to the content of this proxy
+   * @property syncArray
+   * @type {Array}
+   */
+   syncArray: null,
+
+   /**
+    * @property syncEnabled
+    * @type {Boolean}
+    */
+   syncEnabled: true,
+
+  init() {
+    this._super(...arguments);
+
+    let syncArray = this.get('syncArray');
+
+    assert('[ember-light-table] enableSync requires the passed array to be an instance of Ember.A', isArray(syncArray) && typeof syncArray.addArrayObserver === 'function');
+
+    syncArray.addArrayObserver(this, {
+      willChange: 'syncArrayWillChange',
+      didChange: 'syncArrayDidChange'
+    });
+  },
+
+  destroy() {
+    this.get('syncArray').removeArrayObserver(this, {
+      willChange: 'syncArrayWillChange',
+      didChange: 'syncArrayDidChange'
+    });
+
+    this.setProperties({ syncArray: null, content: null });
+  },
+
+  /**
+   * Serialize objects before they are inserted into the content array
+   * @method serializeContentObjects
+   * @param {Array} objects
+   * @return {Array}
+   */
+  serializeContentObjects(objects) {
+    return objects;
+  },
+
+  /**
+   * Serialize objects before they are inserted into the sync array
+   * @method serializeSyncArrayObjects
+   * @param {Array} objects
+   * @return {Array}
+   */
+  serializeSyncArrayObjects(objects) {
+    return objects;
+  },
+
+  syncArrayWillChange() { /* Not needed */},
+
+  syncArrayDidChange(syncArray, start, removeCount, addCount) {
+    let content = this.get('content');
+
+    if(!this.get('syncEnabled')) {
+      return;
+    }
+
+    if(addCount > 0) {
+      content.replace(start, 0, this.serializeContentObjects(syncArray.slice(start, start + addCount)));
+    } else if(removeCount > 0) {
+      content.replace(start, removeCount, []);
+    }
+  },
+
+  replaceContent(start, removeCount, objectsToAdd) {
+    let syncArray = this.get('syncArray');
+
+    if(!this.get('syncEnabled')) {
+      return this._super(...arguments);
+    }
+
+    syncArray.replace(start, removeCount, this.serializeSyncArrayObjects(objectsToAdd));
+  }
+});

addon/classes/Table.js

@@ -1,14 +1,27 @@
 import Ember from 'ember';
 import Row from 'ember-light-table/classes/Row';
 import Column from 'ember-light-table/classes/Column';
+import SyncArrayProxy from 'ember-light-table/-private/sync-array-proxy';
+import { mergeOptionsWithGlobals } from 'ember-light-table/-private/global-options';
 
 const {
+  get,
   computed,
   isNone,
   isEmpty,
   A: emberArray
 } = Ember;
 
+const RowSyncArrayProxy = SyncArrayProxy.extend({
+  serializeContentObjects(objects) {
+    return Table.createRows(objects);
+  },
+
+  serializeSyncArrayObjects(objects) {
+    return objects.map(o => get(o, 'content'));
+  }
+});
+
 /**
  * @module Table
  * @private
@@ -129,13 +142,31 @@ export default class Table extends Ember.Object.extend({
    * @constructor
    * @param  {Array} columns
    * @param  {Array} rows
+   * @param  {Object} options
+   *
    */
-  constructor(columns = [], rows = []) {
+  constructor(columns = [], rows = [], options = {}) {
     super();
-    this.setProperties({
-      rows: emberArray(Table.createRows(rows)),
-      columns: emberArray(Table.createColumns(columns)),
-    });
+
+    let _columns = emberArray(Table.createColumns(columns));
+    let _rows = emberArray(Table.createRows(rows));
+    let _options = mergeOptionsWithGlobals(options);
+
+    if(_options.enableSync) {
+      _rows = RowSyncArrayProxy.create({ syncArray: rows, content: _rows });
+    }
+
+    this.setProperties({ columns: _columns, rows: _rows });
+  }
+
+  destroy() {
+    this._super(...arguments);
+
+    let rows = this.get('rows');
+
+    if(rows instanceof RowSyncArrayProxy) {
+      rows.destroy();
+    }
   }
 
   // Rows
@@ -237,6 +268,16 @@ export default class Table extends Ember.Object.extend({
     rows.forEach(r => this.removeRow(r));
   }
 
+
+  /**
+   * Remove a row at the specified index
+   * @method removeRowAt
+   * @param  {Number}  index
+   */
+  removeRowAt(index) {
+    this.get('rows').removeAt(index);
+  }
+
   // Columns
 
   /**
@@ -322,6 +363,15 @@ export default class Table extends Ember.Object.extend({
     return this.get('columns').removeObjects(columns);
   }
 
+  /**
+   * Remove a column at the specified index
+   * @method removeColumnAt
+   * @param  {Number}  index
+   */
+  removeColumnAt(index) {
+    this.get('columns').removeAt(index);
+  }
+
   /**
    * Create a Row object with the given content
    * @method createRow

package.json

@@ -62,6 +62,7 @@
   "dependencies": {
     "ember-cli-babel": "^5.1.6",
     "ember-cli-htmlbars": "^1.0.11",
+    "ember-get-config": "0.1.7",
     "ember-in-viewport": "2.1.0",
     "ember-scrollable": "0.3.2",
     "ember-truth-helpers": "1.2.0",

tests/dummy/app/adapters/application.js

@@ -2,5 +2,5 @@ import DS from 'ember-data';
 import ENV from '../config/environment';
 
 export default DS.RESTAdapter.extend({
-  namespace: ENV.baseURL + 'api'
+  namespace: ENV.rootURL + 'api'
 });

tests/dummy/app/controllers/table.js

@@ -2,28 +2,33 @@ import Ember from 'ember';
 import Table from 'ember-light-table';
 
 const {
-  isEmpty
+  isEmpty,
+  computed
 } = Ember;
 
 export default Ember.Controller.extend({
   columns: null,
-  table: null,
   sort: null,
   page: 1,
   limit: 10,
   dir: 'asc',
   isLoading: false,
   canLoadMore: true,
+  model: null,
 
   init() {
     this._super(...arguments);
-    this.set('table', new Table(this.get('columns')));
   },
 
+  table: computed('model', function() {
+    return new Table(this.get('columns'), this.get('model'), { enableSync: true });
+  }),
+
   fetchRecords() {
     this.set('isLoading', true);
     this.store.query('user', this.getProperties(['page', 'limit', 'sort', 'dir'])).then(records => {
-      this.get('table').addRows(records);
+      // this.get('table').addRows(records);
+      this.get('model').pushObjects(records.toArray());
       this.set('isLoading', false);
       this.set('canLoadMore', !isEmpty(records));
     });
@@ -44,7 +49,7 @@ export default Ember.Controller.extend({
           sort: column.get('valuePath'),
           page: 1
         });
-        this.get('table').setRows([]);
+        this.get('model').setObjects([]);
         this.fetchRecords();
       }
     }

tests/dummy/app/routes/table-route.js

@@ -2,11 +2,11 @@ import Ember from 'ember';
 
 export default Ember.Route.extend({
   model() {
-    return this.store.query('user', {page: 1, limit: 10});
+    return this.store.query('user', { page: 1, limit: 10 });
   },
 
   setupController(controller, model) {
-    controller.get('table').setRows(model.toArray());
+    controller.set('model', model.toArray());
   },
 
   resetController: function(controller, isExiting) {

tests/dummy/config/environment.js

@@ -29,7 +29,7 @@ module.exports = function(environment) {
 
   if (environment === 'test') {
     // Testem prefers this...
-    ENV.baseURL = '/';
+    ENV.rootURL = '/';
     ENV.locationType = 'none';
 
     // keep test console output quieter
@@ -41,7 +41,7 @@ module.exports = function(environment) {
 
   if (environment === 'production') {
     ENV.locationType = 'hash';
-    ENV.baseURL = '/ember-light-table/';
+    ENV.rootURL = '/ember-light-table/';
     ENV['ember-cli-mirage'] = {
       enabled: true
     };

tests/index.html

@@ -22,7 +22,7 @@
     {{content-for "body"}}
     {{content-for "test-body"}}
 
-    <script src="testem.js" integrity=""></script>
+    <script src="{{rootURL}}testem.js" integrity=""></script>
     <script src="{{rootURL}}assets/vendor.js"></script>
     <script src="{{rootURL}}assets/test-support.js"></script>
     <script src="{{rootURL}}assets/dummy.js"></script>

tests/unit/classes/table-test.js

@@ -1,6 +1,11 @@
+import Ember from 'ember';
 import { Table, Column, Row } from 'ember-light-table';
 import { module, test } from 'qunit';
 
+const {
+  A: emberArray
+} = Ember;
+
 module('Unit | Classes | Table');
 
 test('create table - default options', function(assert) {
@@ -408,3 +413,63 @@ test('static table method - createColumns', function(assert) {
   assert.equal(cols.length, 2);
   assert.ok(cols[0] instanceof Column);
 });
+
+test('table modifications with sync enabled - simple', function(assert) {
+  let rows = emberArray([]);
+  let table = new Table([], rows, { enableSync: true });
+
+  table.addRow({ firstName: 'Offir' });
+
+  assert.equal(table.get('rows.length'), 1);
+  assert.equal(table.get('rows.length'), rows.get('length'));
+
+  rows.pushObject({ firstName: 'Taras' });
+
+  assert.equal(rows.get('length'), 2);
+  assert.equal(table.get('rows.length'), rows.get('length'));
+
+  assert.deepEqual(table.get('rows').getEach('firstName'), rows.getEach('firstName'));
+
+  table.get('rows').clear();
+
+  assert.equal(table.get('rows.length'), 0);
+  assert.equal(table.get('rows.length'), rows.get('length'));
+});
+
+test('table modifications with sync enabled - stress', function(assert) {
+  let rows = emberArray([]);
+  let table = new Table([], rows, { enableSync: true });
+
+  for(let i = 0; i < 100; i++) {
+    table.addRow({ position: i });
+  }
+
+  assert.equal(table.get('rows.length'), rows.get('length'));
+  assert.deepEqual(table.get('rows').getEach('position'), rows.getEach('position'));
+
+  for(let i = 100; i < 200; i++) {
+    rows.pushObject({ position: i });
+  }
+
+  assert.equal(table.get('rows.length'), rows.get('length'));
+  assert.deepEqual(table.get('rows').getEach('position'), rows.getEach('position'));
+
+  table.removeRowAt(5);
+  table.removeRowAt(10);
+  table.removeRowAt(125);
+
+  assert.equal(table.get('rows.length'), rows.get('length'));
+  assert.deepEqual(table.get('rows').getEach('position'), rows.getEach('position'));
+
+  rows.removeAt(10);
+  rows.removeAt(20);
+  rows.removeAt(150);
+
+  assert.equal(table.get('rows.length'), rows.get('length'));
+  assert.deepEqual(table.get('rows').getEach('position'), rows.getEach('position'));
+
+  table.get('rows').clear();
+
+  assert.equal(table.get('rows.length'), 0);
+  assert.equal(table.get('rows.length'), rows.get('length'));
+});