ko.layout.js 8.1 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) {
  61. return self.addRow(null, atBeginning);
  62. };
  63. self.addRow = function (row, atBeginning) {
  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 atBeginning == "undefined" || atBeginning == null) {
  68. self.rows.push(row);
  69. }
  70. else {
  71. self.rows.unshift(row);
  72. }
  73. return row;
  74. };
  75. }
  76. var Row = function (widgets, vm, columns) {
  77. var self = this;
  78. self.id = ko.observable(UUID());
  79. self.widgets = ko.observableArray(widgets);
  80. self.columns = ko.observableArray(columns ? columns : []);
  81. self.enableOozieDrop = ko.computed(function(){
  82. return vm.isEditing && vm.isEditing() && self.widgets && self.widgets().length < 1
  83. });
  84. self.addWidget = function (widget) {
  85. self.widgets.push(widget);
  86. };
  87. self.addEmptyColumn = function (atBeginning) {
  88. if (self.columns().length == 0){
  89. var _col = self.addColumn(null, atBeginning);
  90. if (self.widgets().length > 0){
  91. var _row = _col.addEmptyRow();
  92. self.widgets().forEach(function(widget){
  93. _row.addWidget(widget);
  94. });
  95. self.widgets([]);
  96. }
  97. }
  98. return self.addColumn(null, atBeginning);
  99. };
  100. self.addColumn = function (column, atBeginning) {
  101. if (typeof column == "undefined" || column == null) {
  102. var _size = Math.max(1, Math.floor(12 / (self.columns().length + 1)));
  103. column = new Column(_size, []); // Hacky but needed when a new row is deleted
  104. self.columns().forEach(function(col){
  105. col.size(_size);
  106. });
  107. }
  108. if (typeof atBeginning == "undefined" || atBeginning == null || ! atBeginning) {
  109. self.columns.push(column);
  110. }
  111. else {
  112. self.columns.unshift(column);
  113. }
  114. return column;
  115. };
  116. self.move = function (from, to) {
  117. try {
  118. vm.columns()[to].addRow(self);
  119. vm.columns()[from].rows.remove(self);
  120. }
  121. catch (exception) {
  122. }
  123. }
  124. self.moveDown = function (col, row) {
  125. var _i = col.rows().indexOf(row);
  126. if (_i < col.rows().length - 1) {
  127. var _arr = col.rows();
  128. col.rows.splice(_i, 2, _arr[_i + 1], _arr[_i]);
  129. }
  130. }
  131. self.moveUp = function (col, row) {
  132. var _i = col.rows().indexOf(row);
  133. if (_i >= 1) {
  134. var _arr = col.rows();
  135. col.rows.splice(_i - 1, 2, _arr[_i], _arr[_i - 1]);
  136. }
  137. }
  138. self.remove = function (col, row) {
  139. $.each(self.columns(), function (i, column) {
  140. $.each(column.rows(), function (j, row) {
  141. $.each(row.widgets(), function (k, widget) {
  142. vm.removeWidget(widget);
  143. });
  144. });
  145. });
  146. $.each(self.widgets(), function (i, widget) {
  147. vm.removeWidget(widget);
  148. });
  149. col.rows.remove(row);
  150. }
  151. self.autosizeWidgets = function () {
  152. $.each(self.widgets(), function (i, widget) {
  153. widget.size(Math.floor(12 / self.widgets().length));
  154. });
  155. }
  156. }
  157. // A widget is generic. It has an id that refer to another object (e.g. facet) with the same id.
  158. var Widget = function (params) {
  159. var self = this;
  160. self.size = ko.observable(params.size).extend({ numeric: 0 });
  161. self.name = ko.observable(params.name);
  162. self.id = ko.observable(params.id);
  163. self.widgetType = ko.observable(typeof params.widgetType != "undefined" && params.widgetType != null ? params.widgetType : "empty-widget");
  164. self.properties = ko.observable(typeof params.properties != "undefined" && params.properties != null ? params.properties : {});
  165. self.offset = ko.observable(typeof params.offset != "undefined" && params.offset != null ? params.offset : 0).extend({ numeric: 0 });
  166. self.isLoading = ko.observable(typeof params.loading != "undefined" && params.loading != null ? params.loading : false);
  167. self.klass = ko.computed(function () {
  168. return "card card-widget span" + self.size() + (self.offset() * 1 > 0 ? " offset" + self.offset() : "");
  169. });
  170. self.expand = function () {
  171. self.size(self.size() + 1);
  172. $("#wdg_" + self.id()).trigger("resize");
  173. }
  174. self.compress = function () {
  175. self.size(self.size() - 1);
  176. $("#wdg_" + self.id()).trigger("resize");
  177. }
  178. self.moveLeft = function () {
  179. self.offset(self.offset() - 1);
  180. }
  181. self.moveRight = function () {
  182. self.offset(self.offset() + 1);
  183. }
  184. self.remove = function (row, widget) {
  185. if (params.vm != null) {
  186. params.vm.removeWidget(widget);
  187. }
  188. row.widgets.remove(widget);
  189. }
  190. };
  191. Widget.prototype.clone = function () {
  192. return new Widget({
  193. size: this.size(),
  194. id: UUID(),
  195. name: this.name(),
  196. widgetType: this.widgetType()
  197. });
  198. };
  199. function fullLayout(vm) {
  200. setLayout([12], vm);
  201. }
  202. function oneSixthLeftLayout(vm) {
  203. setLayout([2, 10], vm);
  204. }
  205. function oneFourthLeftLayout(vm) {
  206. setLayout([3, 9], vm);
  207. }
  208. function oneThirdLeftLayout(vm) {
  209. setLayout([4, 8], vm);
  210. }
  211. function halfHalfLayout(vm) {
  212. setLayout([6, 6], vm);
  213. }
  214. function oneThirdRightLayout(vm) {
  215. setLayout([8, 4], vm);
  216. }
  217. function oneFourthRightLayout(vm) {
  218. setLayout([9, 3], vm);
  219. }
  220. function oneSixthRightLayout(vm) {
  221. setLayout([10, 2], vm);
  222. }
  223. function setLayout(colSizes, vm) {
  224. // Save previous widgets
  225. var _allRows = [];
  226. $(vm.columns()).each(function (cnt, col) {
  227. var _tRows = [];
  228. $(col.rows()).each(function (icnt, row) {
  229. if (row.widgets().length > 0 || (typeof vm.isNested != "undefined" && vm.isNested())) {
  230. _tRows.push(row);
  231. }
  232. });
  233. _allRows = _allRows.concat(_tRows);
  234. });
  235. var _cols = [];
  236. var _highestCol = {
  237. idx: -1,
  238. size: -1
  239. };
  240. $(colSizes).each(function (cnt, size) {
  241. _cols.push(new Column(size, []));
  242. if (size > _highestCol.size) {
  243. _highestCol.idx = cnt;
  244. _highestCol.size = size;
  245. }
  246. });
  247. if (_allRows.length > 0 && _highestCol.idx > -1) {
  248. _cols[_highestCol.idx].rows(_allRows);
  249. }
  250. $(_cols).each(function (cnt, col) {
  251. if (col.rows().length == 0) {
  252. col.rows([new Row([], vm)]);
  253. }
  254. });
  255. vm.columns(_cols);
  256. $(document).trigger("setLayout");
  257. }