ko.layout.js 7.8 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.size = ko.observable(size);
  27. self.rows = ko.observableArray(rows);
  28. self.oozieStartRow = ko.computed(function() {
  29. var _row = null;
  30. ko.utils.arrayForEach(self.rows(), function(row) {
  31. if ((row.widgets().length > 0 && row.widgets()[0].widgetType() == "start-widget")){
  32. _row = row;
  33. }
  34. });
  35. return _row;
  36. }, self);
  37. self.oozieEndRow = ko.computed(function() {
  38. var _row = null;
  39. ko.utils.arrayForEach(self.rows(), function(row) {
  40. if ((row.widgets().length > 0 && row.widgets()[0].widgetType() == "end-widget")){
  41. _row = row;
  42. }
  43. });
  44. return _row;
  45. }, self);
  46. self.oozieRows = ko.computed(function() {
  47. var _rows = [];
  48. ko.utils.arrayForEach(self.rows(), function(row) {
  49. if ((row.widgets().length > 0 && row.widgets()[0].widgetType() != "start-widget" && row.widgets()[0].widgetType() != "end-widget") || row.widgets().length == 0){
  50. _rows.push(row);
  51. }
  52. });
  53. return _rows;
  54. }, self);
  55. self.drops = ko.observableArray(["temp"]);
  56. self.klass = ko.computed(function () {
  57. return "card card-home card-column span" + self.size();
  58. });
  59. self.addEmptyRow = function (atBeginning) {
  60. return self.addRow(null, atBeginning);
  61. };
  62. self.addRow = function (row, atBeginning) {
  63. if (typeof row == "undefined" || row == null) {
  64. row = new Row([], viewModel); // Hacky but needed when a new row is deleted
  65. }
  66. if (typeof atBeginning == "undefined" || atBeginning == null) {
  67. self.rows.push(row);
  68. }
  69. else {
  70. self.rows.unshift(row);
  71. }
  72. return row;
  73. };
  74. }
  75. var Row = function (widgets, vm, columns) {
  76. var self = this;
  77. self.widgets = ko.observableArray(widgets);
  78. self.columns = ko.observableArray(columns ? columns : []);
  79. self.enableOozieDrop = ko.computed(function(){
  80. return vm.isEditing && vm.isEditing() && self.widgets && self.widgets().length < 1
  81. });
  82. self.addWidget = function (widget) {
  83. self.widgets.push(widget);
  84. };
  85. self.addEmptyColumn = function () {
  86. if (self.columns().length == 0){
  87. var _col = self.addColumn(null);
  88. if (self.widgets().length > 0){
  89. var _row = _col.addEmptyRow();
  90. self.widgets().forEach(function(widget){
  91. _row.addWidget(widget);
  92. });
  93. self.widgets([]);
  94. }
  95. }
  96. return self.addColumn(null);
  97. };
  98. self.addColumn = function (column) {
  99. if (typeof column == "undefined" || column == null) {
  100. var _size = Math.max(1, Math.floor(12 / (self.columns().length + 1)));
  101. column = new Column(_size, []); // Hacky but needed when a new row is deleted
  102. self.columns().forEach(function(col){
  103. col.size(_size);
  104. });
  105. }
  106. self.columns.push(column);
  107. return column;
  108. };
  109. self.move = function (from, to) {
  110. try {
  111. vm.columns()[to].addRow(self);
  112. vm.columns()[from].rows.remove(self);
  113. }
  114. catch (exception) {
  115. }
  116. }
  117. self.moveDown = function (col, row) {
  118. var _i = col.rows().indexOf(row);
  119. if (_i < col.rows().length - 1) {
  120. var _arr = col.rows();
  121. col.rows.splice(_i, 2, _arr[_i + 1], _arr[_i]);
  122. }
  123. }
  124. self.moveUp = function (col, row) {
  125. var _i = col.rows().indexOf(row);
  126. if (_i >= 1) {
  127. var _arr = col.rows();
  128. col.rows.splice(_i - 1, 2, _arr[_i], _arr[_i - 1]);
  129. }
  130. }
  131. self.remove = function (col, row) {
  132. $.each(self.columns(), function (i, column) {
  133. $.each(column.rows(), function (j, row) {
  134. $.each(row.widgets(), function (k, widget) {
  135. vm.removeWidget(widget);
  136. });
  137. });
  138. });
  139. $.each(self.widgets(), function (i, widget) {
  140. vm.removeWidget(widget);
  141. });
  142. col.rows.remove(row);
  143. }
  144. self.autosizeWidgets = function () {
  145. $.each(self.widgets(), function (i, widget) {
  146. widget.size(Math.floor(12 / self.widgets().length));
  147. });
  148. }
  149. }
  150. // A widget is generic. It has an id that refer to another object (e.g. facet) with the same id.
  151. var Widget = function (params) {
  152. var self = this;
  153. self.size = ko.observable(params.size).extend({ numeric: 0 });
  154. self.name = ko.observable(params.name);
  155. self.id = ko.observable(params.id);
  156. self.widgetType = ko.observable(typeof params.widgetType != "undefined" && params.widgetType != null ? params.widgetType : "empty-widget");
  157. self.properties = ko.observable(typeof params.properties != "undefined" && params.properties != null ? params.properties : {});
  158. self.offset = ko.observable(typeof params.offset != "undefined" && params.offset != null ? params.offset : 0).extend({ numeric: 0 });
  159. self.isLoading = ko.observable(typeof params.loading != "undefined" && params.loading != null ? params.loading : false);
  160. self.klass = ko.computed(function () {
  161. return "card card-widget span" + self.size() + (self.offset() * 1 > 0 ? " offset" + self.offset() : "");
  162. });
  163. self.expand = function () {
  164. self.size(self.size() + 1);
  165. $("#wdg_" + self.id()).trigger("resize");
  166. }
  167. self.compress = function () {
  168. self.size(self.size() - 1);
  169. $("#wdg_" + self.id()).trigger("resize");
  170. }
  171. self.moveLeft = function () {
  172. self.offset(self.offset() - 1);
  173. }
  174. self.moveRight = function () {
  175. self.offset(self.offset() + 1);
  176. }
  177. self.remove = function (row, widget) {
  178. if (params.vm != null) {
  179. params.vm.removeWidget(widget);
  180. }
  181. row.widgets.remove(widget);
  182. }
  183. };
  184. Widget.prototype.clone = function () {
  185. return new Widget({
  186. size: this.size(),
  187. id: UUID(),
  188. name: this.name(),
  189. widgetType: this.widgetType()
  190. });
  191. };
  192. function fullLayout(vm) {
  193. setLayout([12], vm);
  194. }
  195. function oneSixthLeftLayout(vm) {
  196. setLayout([2, 10], vm);
  197. }
  198. function oneFourthLeftLayout(vm) {
  199. setLayout([3, 9], vm);
  200. }
  201. function oneThirdLeftLayout(vm) {
  202. setLayout([4, 8], vm);
  203. }
  204. function halfHalfLayout(vm) {
  205. setLayout([6, 6], vm);
  206. }
  207. function oneThirdRightLayout(vm) {
  208. setLayout([8, 4], vm);
  209. }
  210. function oneFourthRightLayout(vm) {
  211. setLayout([9, 3], vm);
  212. }
  213. function oneSixthRightLayout(vm) {
  214. setLayout([10, 2], vm);
  215. }
  216. function setLayout(colSizes, vm) {
  217. // Save previous widgets
  218. var _allRows = [];
  219. $(vm.columns()).each(function (cnt, col) {
  220. var _tRows = [];
  221. $(col.rows()).each(function (icnt, row) {
  222. if (row.widgets().length > 0 || (typeof vm.isNested != "undefined" && vm.isNested())) {
  223. _tRows.push(row);
  224. }
  225. });
  226. _allRows = _allRows.concat(_tRows);
  227. });
  228. var _cols = [];
  229. var _highestCol = {
  230. idx: -1,
  231. size: -1
  232. };
  233. $(colSizes).each(function (cnt, size) {
  234. _cols.push(new Column(size, []));
  235. if (size > _highestCol.size) {
  236. _highestCol.idx = cnt;
  237. _highestCol.size = size;
  238. }
  239. });
  240. if (_allRows.length > 0 && _highestCol.idx > -1) {
  241. _cols[_highestCol.idx].rows(_allRows);
  242. }
  243. $(_cols).each(function (cnt, col) {
  244. if (col.rows().length == 0) {
  245. col.rows([new Row([], vm)]);
  246. }
  247. });
  248. vm.columns(_cols);
  249. $(document).trigger("setLayout");
  250. }