ko.layout.js 8.3 KB

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  1. // Licensed to Cloudera, Inc. under one
  2. // or more contributor license agreements. See the NOTICE file
  3. // distributed with this work for additional information
  4. // regarding copyright ownership. Cloudera, Inc. licenses this file
  5. // to you under the Apache License, Version 2.0 (the
  6. // "License"); you may not use this file except in compliance
  7. // with the License. You may obtain a copy of the License at
  8. //
  9. // http://www.apache.org/licenses/LICENSE-2.0
  10. //
  11. // Unless required by applicable law or agreed to in writing, software
  12. // distributed under the License is distributed on an "AS IS" BASIS,
  13. // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14. // See the License for the specific language governing permissions and
  15. // limitations under the License.
  16. function s4() {
  17. return Math.floor((1 + Math.random()) * 0x10000)
  18. .toString(16)
  19. .substring(1);
  20. }
  21. function UUID() {
  22. return s4() + s4() + '-' + s4() + '-' + s4() + '-' + s4() + '-' + s4() + s4() + s4();
  23. }
  24. var Column = function (size, rows) {
  25. var self = this;
  26. self.id = ko.observable(UUID());
  27. self.size = ko.observable(size);
  28. self.rows = ko.observableArray(rows);
  29. self.oozieStartRow = ko.computed(function () {
  30. var _row = null;
  31. ko.utils.arrayForEach(self.rows(), function (row) {
  32. if ((row.widgets().length > 0 && row.widgets()[0].widgetType() == "start-widget")) {
  33. _row = row;
  34. }
  35. });
  36. return _row;
  37. }, self);
  38. self.oozieEndRow = ko.computed(function () {
  39. var _row = null;
  40. ko.utils.arrayForEach(self.rows(), function (row) {
  41. if ((row.widgets().length > 0 && row.widgets()[0].widgetType() == "end-widget")) {
  42. _row = row;
  43. }
  44. });
  45. return _row;
  46. }, self);
  47. self.oozieRows = ko.computed(function () {
  48. var _rows = [];
  49. ko.utils.arrayForEach(self.rows(), function (row) {
  50. if ((row.widgets().length > 0 && row.widgets()[0].widgetType() != "start-widget" && row.widgets()[0].widgetType() != "end-widget") || row.widgets().length == 0) {
  51. _rows.push(row);
  52. }
  53. });
  54. return _rows;
  55. }, self);
  56. self.drops = ko.observableArray(["temp"]);
  57. self.klass = ko.computed(function () {
  58. return "card card-home card-column span" + self.size();
  59. });
  60. self.addEmptyRow = function (atBeginning, atIndex) {
  61. return self.addRow(null, atBeginning, atIndex);
  62. };
  63. self.addRow = function (row, atBeginning, atIndex) {
  64. if (typeof row == "undefined" || row == null) {
  65. row = new Row([], viewModel); // Hacky but needed when a new row is deleted
  66. }
  67. if (typeof atIndex != "undefined" && atIndex != null) {
  68. self.rows.splice(atIndex, 0, row);
  69. }
  70. else {
  71. if (typeof atBeginning == "undefined" || atBeginning == null || !atBeginning) {
  72. self.rows.push(row);
  73. }
  74. else {
  75. self.rows.unshift(row);
  76. }
  77. }
  78. return row;
  79. };
  80. }
  81. var Row = function (widgets, vm, columns) {
  82. var self = this;
  83. self.id = ko.observable(UUID());
  84. self.widgets = ko.observableArray(widgets);
  85. self.columns = ko.observableArray(columns ? columns : []);
  86. self.enableOozieDrop = ko.computed(function(){
  87. return vm.isEditing && vm.isEditing() && self.widgets && self.widgets().length < 1
  88. });
  89. self.enableOozieDropOnSide = ko.observable(true);
  90. self.addWidget = function (widget) {
  91. self.widgets.push(widget);
  92. };
  93. self.addEmptyColumn = function (atBeginning) {
  94. if (self.columns().length == 0){
  95. var _col = self.addColumn(null, atBeginning);
  96. if (self.widgets().length > 0){
  97. var _row = _col.addEmptyRow();
  98. self.widgets().forEach(function(widget){
  99. _row.addWidget(widget);
  100. });
  101. self.widgets([]);
  102. }
  103. }
  104. return self.addColumn(null, atBeginning);
  105. };
  106. self.addColumn = function (column, atBeginning) {
  107. if (typeof column == "undefined" || column == null) {
  108. var _size = Math.max(1, Math.floor(12 / (self.columns().length + 1)));
  109. column = new Column(_size, []); // Hacky but needed when a new row is deleted
  110. self.columns().forEach(function(col){
  111. col.size(_size);
  112. });
  113. }
  114. if (typeof atBeginning == "undefined" || atBeginning == null || ! atBeginning) {
  115. self.columns.push(column);
  116. }
  117. else {
  118. self.columns.unshift(column);
  119. }
  120. return column;
  121. };
  122. self.move = function (from, to) {
  123. try {
  124. vm.columns()[to].addRow(self);
  125. vm.columns()[from].rows.remove(self);
  126. }
  127. catch (exception) {
  128. }
  129. }
  130. self.moveDown = function (col, row) {
  131. var _i = col.rows().indexOf(row);
  132. if (_i < col.rows().length - 1) {
  133. var _arr = col.rows();
  134. col.rows.splice(_i, 2, _arr[_i + 1], _arr[_i]);
  135. }
  136. }
  137. self.moveUp = function (col, row) {
  138. var _i = col.rows().indexOf(row);
  139. if (_i >= 1) {
  140. var _arr = col.rows();
  141. col.rows.splice(_i - 1, 2, _arr[_i], _arr[_i - 1]);
  142. }
  143. }
  144. self.remove = function (col, row) {
  145. $.each(self.columns(), function (i, column) {
  146. $.each(column.rows(), function (j, row) {
  147. $.each(row.widgets(), function (k, widget) {
  148. vm.removeWidget(widget);
  149. });
  150. });
  151. });
  152. $.each(self.widgets(), function (i, widget) {
  153. vm.removeWidget(widget);
  154. });
  155. col.rows.remove(row);
  156. }
  157. self.autosizeWidgets = function () {
  158. $.each(self.widgets(), function (i, widget) {
  159. widget.size(Math.floor(12 / self.widgets().length));
  160. });
  161. }
  162. }
  163. // A widget is generic. It has an id that refer to another object (e.g. facet) with the same id.
  164. var Widget = function (params) {
  165. var self = this;
  166. self.size = ko.observable(params.size).extend({ numeric: 0 });
  167. self.name = ko.observable(params.name);
  168. self.id = ko.observable(params.id);
  169. self.widgetType = ko.observable(typeof params.widgetType != "undefined" && params.widgetType != null ? params.widgetType : "empty-widget");
  170. self.properties = ko.observable(typeof params.properties != "undefined" && params.properties != null ? params.properties : {});
  171. self.offset = ko.observable(typeof params.offset != "undefined" && params.offset != null ? params.offset : 0).extend({ numeric: 0 });
  172. self.isLoading = ko.observable(typeof params.loading != "undefined" && params.loading != null ? params.loading : false);
  173. self.klass = ko.computed(function () {
  174. return "card card-widget span" + self.size() + (self.offset() * 1 > 0 ? " offset" + self.offset() : "");
  175. });
  176. self.expand = function () {
  177. self.size(self.size() + 1);
  178. $("#wdg_" + self.id()).trigger("resize");
  179. }
  180. self.compress = function () {
  181. self.size(self.size() - 1);
  182. $("#wdg_" + self.id()).trigger("resize");
  183. }
  184. self.moveLeft = function () {
  185. self.offset(self.offset() - 1);
  186. }
  187. self.moveRight = function () {
  188. self.offset(self.offset() + 1);
  189. }
  190. self.remove = function (row, widget) {
  191. if (params.vm != null) {
  192. params.vm.removeWidget(widget);
  193. }
  194. row.widgets.remove(widget);
  195. }
  196. };
  197. Widget.prototype.clone = function () {
  198. return new Widget({
  199. size: this.size(),
  200. id: UUID(),
  201. name: this.name(),
  202. widgetType: this.widgetType()
  203. });
  204. };
  205. function fullLayout(vm) {
  206. setLayout([12], vm);
  207. }
  208. function oneSixthLeftLayout(vm) {
  209. setLayout([2, 10], vm);
  210. }
  211. function oneFourthLeftLayout(vm) {
  212. setLayout([3, 9], vm);
  213. }
  214. function oneThirdLeftLayout(vm) {
  215. setLayout([4, 8], vm);
  216. }
  217. function halfHalfLayout(vm) {
  218. setLayout([6, 6], vm);
  219. }
  220. function oneThirdRightLayout(vm) {
  221. setLayout([8, 4], vm);
  222. }
  223. function oneFourthRightLayout(vm) {
  224. setLayout([9, 3], vm);
  225. }
  226. function oneSixthRightLayout(vm) {
  227. setLayout([10, 2], vm);
  228. }
  229. function setLayout(colSizes, vm) {
  230. // Save previous widgets
  231. var _allRows = [];
  232. $(vm.columns()).each(function (cnt, col) {
  233. var _tRows = [];
  234. $(col.rows()).each(function (icnt, row) {
  235. if (row.widgets().length > 0 || (typeof vm.isNested != "undefined" && vm.isNested())) {
  236. _tRows.push(row);
  237. }
  238. });
  239. _allRows = _allRows.concat(_tRows);
  240. });
  241. var _cols = [];
  242. var _highestCol = {
  243. idx: -1,
  244. size: -1
  245. };
  246. $(colSizes).each(function (cnt, size) {
  247. _cols.push(new Column(size, []));
  248. if (size > _highestCol.size) {
  249. _highestCol.idx = cnt;
  250. _highestCol.size = size;
  251. }
  252. });
  253. if (_allRows.length > 0 && _highestCol.idx > -1) {
  254. _cols[_highestCol.idx].rows(_allRows);
  255. }
  256. $(_cols).each(function (cnt, col) {
  257. if (col.rows().length == 0) {
  258. col.rows([new Row([], vm)]);
  259. }
  260. });
  261. vm.columns(_cols);
  262. $(document).trigger("setLayout");
  263. }