workflow.js 31 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. var Registry = RegistryModule($);
  17. var Modal = ModalModule($, ko);
  18. var Node = NodeModule($, IdGeneratorTable, NodeFields);
  19. var StartNode = NodeModule($, IdGeneratorTable, NodeFields);
  20. $.extend(StartNode.prototype, Node.prototype, {
  21. /**
  22. * Same as addChild for nodes, except if we reach the end,
  23. * we add the end node to our child_links in the form of a
  24. * 'related' link and 'start' link.
  25. * We should always have a start link in an empty workflow!
  26. */
  27. replaceChild: function(child, replacement) {
  28. var self = this;
  29. var index = -1;
  30. $.each(self.non_error_links(), function(i, link) {
  31. if (link.child() == child.id()) {
  32. index = i;
  33. }
  34. });
  35. if (index > -1) {
  36. self.child_links.splice(index, 1);
  37. var links = self.child_links.splice(index);
  38. var link = {
  39. parent: ko.observable(self.id()),
  40. child: ko.observable(replacement.id()),
  41. name: ko.observable('to'),
  42. comment: ko.observable('')
  43. };
  44. self.child_links.push(link);
  45. $.each(links, function(index, link) {
  46. self.child_links.push(link);
  47. });
  48. }
  49. return index != -1;
  50. }
  51. });
  52. var ForkNode = NodeModule($, IdGeneratorTable, NodeFields);
  53. $.extend(ForkNode.prototype, Node.prototype, {
  54. // Join nodes are connected through 'related' links
  55. join: function() {
  56. var self = this;
  57. var join = null;
  58. $.each(self.child_links(), function(index, link) {
  59. if (link.name() == 'related') {
  60. join = self.registry.get(link.child());
  61. }
  62. });
  63. return join;
  64. },
  65. /**
  66. * Append a node to the current fork
  67. * Also adds join node to node.
  68. * When adding the join node, append will remove all the children from the join!
  69. * We need to make sure the join remembers its children since append will replace them.
  70. * NOTE: Cannot append a fork or decision! Use addChild or replaceChild instead!
  71. */
  72. append: function(node) {
  73. var self = this;
  74. if (node.node_type() != 'decision' && node.node_type() != 'fork') {
  75. var join = self.join();
  76. if (join.id() != node.id()) {
  77. var children = join.findChildren();
  78. self.addChild(node);
  79. node.append(join);
  80. // remember children
  81. $.each(children, function(index, child) {
  82. join.addChild(child);
  83. });
  84. }
  85. }
  86. },
  87. /**
  88. * Replace child node with another node
  89. * 1. Remove child if the replacement is related join
  90. * 2. Apply Node.replaceChild for all other causes
  91. * NOTE: can assume the only join this fork will ever see is the related join!
  92. * This is because the related will always be the closest join for children.
  93. * Also, the operations allowed that would make this all possible: detach, append;
  94. * are inherently going to remove any other joins if they exist.
  95. * This is also easier given nodes are contained within Forks!
  96. */
  97. replaceChild: function(child, replacement) {
  98. var self = this;
  99. var ret = true;
  100. if (self.join().id() == replacement.id()) {
  101. ret = self.removeChild(child);
  102. } else {
  103. ret = Node.prototype.replaceChild.apply(self, arguments);
  104. }
  105. var links = self.links().filter(function(element, index, arr) {
  106. return self.registry.get(element.child()).node_type() != 'join';
  107. });
  108. if (links.length < 2) {
  109. self.detach();
  110. self.join().detach();
  111. self.erase();
  112. self.join().erase();
  113. }
  114. return ret;
  115. },
  116. /**
  117. * Converts fork node into decision node in the following way:
  118. * 1. Copies contents of current fork node into a new decision node
  119. * 2. Detach fork node
  120. * 3. Erase fork node
  121. * 4. Append decision node to parent
  122. */
  123. convertToDecision: function() {
  124. var self = this;
  125. var join = self.join();
  126. var end = null;
  127. var child = join.findChildren()[0];
  128. // Replace join with decision end
  129. var decision_end_model = new NodeModel({
  130. id: IdGeneratorTable['decisionend'].nextId(),
  131. node_type: 'decisionend',
  132. workflow: self.workflow(),
  133. child_links: join.model.child_links
  134. });
  135. var decision_end_node = new Node(self._workflow, decision_end_model, self.registry);
  136. $.each(decision_end_model.child_links, function(index, link) {
  137. link.parent = decision_end_model.id;
  138. });
  139. var parents = join.findParents();
  140. $.each(parents, function(index, parent) {
  141. parent.replaceChild(join, decision_end_node);
  142. });
  143. // Replace fork with decision node
  144. var decision_model = new DecisionModel({
  145. id: IdGeneratorTable['decision'].nextId(),
  146. name: self.name(),
  147. description: self.description(),
  148. node_type: 'decision',
  149. workflow: self.workflow(),
  150. child_links: self.model.child_links
  151. });
  152. var default_link = {
  153. parent: decision_model.id,
  154. child: self._workflow.end(),
  155. name: 'default',
  156. comment: ''
  157. };
  158. decision_model.child_links.push(default_link);
  159. $.each(decision_model.child_links, function(index, link) {
  160. link.parent = decision_model.id;
  161. });
  162. var parents = self.findParents();
  163. var decision_node = new DecisionNode(self._workflow, decision_model, self.registry);
  164. decision_node.removeChild(join);
  165. decision_node.addChild(decision_end_node);
  166. $.each(parents, function(index, parent) {
  167. parent.replaceChild(self, decision_node);
  168. });
  169. // Get rid of fork and join in registry
  170. join.erase();
  171. self.erase();
  172. // Add decision and decision end to registry
  173. self.registry.add(decision_node.id(), decision_node);
  174. self.registry.add(decision_end_node.id(), decision_end_node);
  175. }
  176. });
  177. var DecisionNode = NodeModule($, IdGeneratorTable, NodeFields);
  178. $.extend(DecisionNode.prototype, ForkNode.prototype, {
  179. initialize: function(workflow, model, registry) {
  180. var self = this;
  181. var registry = registry;
  182. var end = null;
  183. },
  184. end: function() {
  185. var self = this;
  186. var end = null;
  187. $.each(self.child_links(), function(index, link) {
  188. if (link.name() == 'related') {
  189. end = self.registry.get(link.child());
  190. }
  191. });
  192. return end;
  193. },
  194. /**
  195. * Append a node to the current decision
  196. * Also appends end node to node.
  197. * NOTE: Cannot append a decision or fork! Use addChild or replaceChild instead!
  198. */
  199. append: function(node) {
  200. var self = this;
  201. if (node.node_type() != 'decision' && node.node_type() != 'fork') {
  202. var end = self.end();
  203. if (end.id() != node.id()) {
  204. var children = end.findChildren();
  205. self.addChild(node);
  206. node.append(end);
  207. // remember children
  208. $.each(children, function(index, child) {
  209. end.addChild(child);
  210. });
  211. }
  212. }
  213. },
  214. /**
  215. * Replace child node with another node
  216. * 1. Remove child if the replacement is end
  217. * 2. Apply Node.replaceChild for all other causes
  218. */
  219. replaceChild: function(child, replacement) {
  220. var self = this;
  221. var ret = true;
  222. var end = self.end();
  223. if (end && end.id() == replacement.id()) {
  224. ret = self.removeChild(child);
  225. } else {
  226. ret = Node.prototype.replaceChild.apply(self, arguments);
  227. }
  228. if (self.links().length < 2) {
  229. self.detach();
  230. end.detach();
  231. self.erase();
  232. end.erase();
  233. }
  234. return ret;
  235. }
  236. });
  237. /**
  238. * Workflow module
  239. */
  240. var WorkflowModule = function($, NodeModelChooser, Node, ForkNode, DecisionNode, IdGeneratorTable) {
  241. var module = function(options) {
  242. var self = this;
  243. // @see http://knockoutjs.com/documentation/plugins-mapping.html
  244. var mapping = ko.mapping.fromJS(options.model, {
  245. ignore: ['initialize', 'toString', 'copy', 'nodes'],
  246. job_properties: {
  247. create: function(options) {
  248. var parent = options.parent;
  249. var subscribe = function(mapping) {
  250. mapping.name.subscribe(function(value) {
  251. parent.job_properties.valueHasMutated();
  252. });
  253. mapping.value.subscribe(function(value) {
  254. parent.job_properties.valueHasMutated();
  255. });
  256. };
  257. return map_params(options, subscribe);
  258. },
  259. update: function(options) {
  260. var parent = options.parent;
  261. var subscribe = function(mapping) {
  262. mapping.name.subscribe(function(value) {
  263. parent.job_properties.valueHasMutated();
  264. });
  265. mapping.value.subscribe(function(value) {
  266. parent.job_properties.valueHasMutated();
  267. });
  268. };
  269. return map_params(options, subscribe);
  270. }
  271. },
  272. parameters: {
  273. // Will receive individual objects to subscribe.
  274. // Containing array is mapped automagically
  275. create: function(options) {
  276. var parent = options.parent;
  277. var subscribe = function(mapping) {
  278. mapping.name.subscribe(function(value) {
  279. parent.parameters.valueHasMutated();
  280. });
  281. mapping.value.subscribe(function(value) {
  282. parent.parameters.valueHasMutated();
  283. });
  284. };
  285. return map_params(options, subscribe);
  286. },
  287. update: function(options) {
  288. var parent = options.parent;
  289. var subscribe = function(mapping) {
  290. mapping.name.subscribe(function(value) {
  291. parent.parameters.valueHasMutated();
  292. });
  293. mapping.value.subscribe(function(value) {
  294. parent.parameters.valueHasMutated();
  295. });
  296. };
  297. return map_params(options, subscribe);
  298. }
  299. }
  300. });
  301. $.extend(self, mapping);
  302. $.each(mapping['__ko_mapping__'].mappedProperties, function(key, value) {
  303. var key = key;
  304. self[key].subscribe(function(value) {
  305. self.is_dirty( true );
  306. self.model[key] = ko.mapping.toJS(value);
  307. });
  308. });
  309. self.model = options.model;
  310. self.registry = options.registry;
  311. self.options = options;
  312. self.el = (options.el) ? $(options.el) : $('#workflow');
  313. self.nodes = ko.observableArray([]);
  314. self.kill = null;
  315. self.is_dirty = ko.observable( false );
  316. self.loading = ko.observable( false );
  317. self.read_only = ko.observable( options.read_only || false );
  318. self.new_node = ko.observable();
  319. self.url = ko.computed(function() {
  320. return '/oozie/workflows/' + self.id()
  321. });
  322. // Events
  323. self.el.on('workflow:rebuild', function() {
  324. self.rebuild();
  325. });
  326. self.el.on('workflow:events:load', function() {
  327. self.dragAndDropEvents( options );
  328. });
  329. self.el.on('workflow:droppables:load', function() {
  330. self.droppables();
  331. });
  332. self.el.on('workflow:draggables:load', function() {
  333. self.draggables();
  334. });
  335. self.dragAndDropEvents( options );
  336. self.el.trigger('workflow:events:loaded');
  337. module.prototype.initialize.apply(self, arguments);
  338. return self;
  339. };
  340. $.extend(module.prototype, {
  341. // Normal stuff
  342. initialize: function(options) {
  343. var self = this;
  344. $.extend(self.options, options);
  345. if ('model' in options) {
  346. self.model = options.model;
  347. // Initialize nodes
  348. if (self.model.nodes) {
  349. self.registry.clear();
  350. $.each(self.model.nodes, function(index, node) {
  351. var NodeModel = NodeModelChooser(node.node_type);
  352. var model = new NodeModel(node);
  353. var temp = null;
  354. switch(node.node_type) {
  355. case 'start':
  356. temp = new StartNode(self, model, self.registry);
  357. break;
  358. case 'fork':
  359. temp = new ForkNode(self, model, self.registry);
  360. break;
  361. case 'decision':
  362. temp = new DecisionNode(self, model, self.registry);
  363. break;
  364. case 'kill':
  365. temp = self.kill = new Node(self, model, self.registry);
  366. break;
  367. default:
  368. temp = new Node(self, model, self.registry);
  369. break;
  370. }
  371. self.registry.add(temp.id(), temp);
  372. });
  373. }
  374. // Update data
  375. $.each(self.model, function (key, value) {
  376. if (key in self) {
  377. switch(key) {
  378. case 'job_properties':
  379. case 'parameters':
  380. // These may be serialized JSON data since that is how they are stored
  381. self[key].removeAll();
  382. var arr;
  383. try {
  384. arr = $.parseJSON(value);
  385. }
  386. catch (error){
  387. arr = value;
  388. }
  389. $.each(arr, function(index, obj) {
  390. var mapping = ko.mapping.fromJS(obj);
  391. mapping.name.subscribe(function(value) {
  392. self[key].valueHasMutated();
  393. });
  394. mapping.value.subscribe(function(value) {
  395. self[key].valueHasMutated();
  396. });
  397. self[key].push(mapping);
  398. });
  399. break;
  400. case 'nodes':
  401. break;
  402. default:
  403. self[key](value);
  404. break;
  405. }
  406. }
  407. });
  408. self.is_dirty( false );
  409. }
  410. if (!self.kill) {
  411. var kill_json = {
  412. "description": "",
  413. "workflow": self.id(),
  414. "child_links": [],
  415. "node_type": "kill",
  416. "message": "Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]",
  417. "name": "kill",
  418. "id": IdGeneratorTable['kill'].nextId()
  419. };
  420. var NodeModel = NodeModelChooser(kill_json.node_type);
  421. var model = new NodeModel(kill_json);
  422. self.kill = new Node(self, model, self.registry);
  423. self.registry.add(self.kill.id(), self.kill);
  424. }
  425. if ('read_only' in options) {
  426. self.read_only(options['read_only']);
  427. }
  428. if (self.errors) {
  429. ko.mapping.fromJS(format_errors_mapping(self.model), self.errors);
  430. } else {
  431. self.errors = ko.mapping.fromJS(format_errors_mapping(self.model));
  432. }
  433. },
  434. toString: function() {
  435. return '';
  436. var s = '[';
  437. $.each(self.registry.nodes, function(key, node) {
  438. s += node.model.toString() + ",\n";
  439. });
  440. return s + ']';
  441. },
  442. // Data manipulation
  443. toJSON: function() {
  444. var self = this;
  445. data = $.extend(true, {}, self.model);
  446. var nodes = [];
  447. $.each(self.registry.nodes, function(key, node) {
  448. // Create object with members from the actual model to address JSON.stringify bug
  449. // JSON.stringify does not pick up members specified in prototype prior to object creation.
  450. var model = {};
  451. for (var key in node.model) {
  452. model[key] = node.model[key];
  453. }
  454. nodes.push(model);
  455. });
  456. data['nodes'] = nodes;
  457. return JSON.stringify(data);
  458. },
  459. save: function( options ) {
  460. var self = this;
  461. var request = $.extend({
  462. url: self.url() + '/save',
  463. type: 'POST',
  464. data: { workflow: self.toJSON() },
  465. success: $.noop,
  466. error: $.noop
  467. }, options || {});
  468. $.ajax(request);
  469. },
  470. load: function( options ) {
  471. var self = this;
  472. var request = $.extend({
  473. url: self.url(),
  474. dataType: 'json',
  475. type: 'GET',
  476. success: $.noop,
  477. error: $.noop
  478. }, options || {});
  479. $.ajax(request);
  480. },
  481. reload: function(model) {
  482. var self = this;
  483. // Clear all children
  484. $.each(self.registry.nodes, function(index, node) {
  485. node.children.removeAll();
  486. });
  487. self.nodes.removeAll();
  488. self.initialize({model: model});
  489. self.rebuild();
  490. self.el.trigger('workflow:loaded');
  491. },
  492. addParameter: function(data, event) {
  493. var self = this;
  494. var prop = { name: ko.observable(""), value: ko.observable("") };
  495. // force bubble up to containing observable array.
  496. prop.name.subscribe(function(){
  497. self.parameters.valueHasMutated();
  498. });
  499. prop.value.subscribe(function(){
  500. self.parameters.valueHasMutated();
  501. });
  502. self.parameters.push(prop);
  503. },
  504. removeParameter: function(data, event) {
  505. var self = this;
  506. self.parameters.remove(data);
  507. },
  508. addJobProperty: function(data, event) {
  509. var self = this;
  510. var prop = { name: ko.observable(""), value: ko.observable("") };
  511. // force bubble up to containing observable array.
  512. prop.name.subscribe(function(){
  513. self.parameters.valueHasMutated();
  514. });
  515. prop.value.subscribe(function(){
  516. self.parameters.valueHasMutated();
  517. });
  518. self.job_properties.push(prop);
  519. },
  520. removeJobProperty: function(data, event) {
  521. var self = this;
  522. self.job_properties.remove(data);
  523. },
  524. // Workflow UI
  525. // Function to build nodes... recursively.
  526. build: function() {
  527. var self = this;
  528. var maximum = 100;
  529. var count = 0;
  530. var methodChooser = function(node, collection, skip_parents_check) {
  531. if (count++ >= maximum) {
  532. console.error('Hit maximum number of node recursion: ' + maximum);
  533. return null;
  534. }
  535. if (!node) {
  536. return node;
  537. }
  538. var parents = node.findParents();
  539. // Found end of decision node or found join!
  540. if (parents.length > 1 && !skip_parents_check) {
  541. return node;
  542. }
  543. switch(node.node_type()) {
  544. case 'start':
  545. case 'end':
  546. case 'kill':
  547. case 'fork':
  548. case 'join':
  549. case 'decision':
  550. case 'decisionend':
  551. return control(node, collection);
  552. default:
  553. return normal(node, collection);
  554. }
  555. };
  556. var normal = function(node, collection) {
  557. collection.push(node);
  558. var retNode = null;
  559. $.each(node.links(), function(index, link) {
  560. var next_node = self.registry.get(link.child());
  561. retNode = methodChooser(next_node, collection, false, true);
  562. });
  563. return retNode;
  564. };
  565. var control = function(node, collection, skip_parents_check) {
  566. switch(node.node_type()) {
  567. case 'start':
  568. case 'end':
  569. case 'kill':
  570. case 'join':
  571. case 'decisionend':
  572. return normal(node, collection, false, true);
  573. case 'fork':
  574. collection.push(node);
  575. // Wait for join.
  576. // Iterate through all children and add them to child collection.
  577. var join = null;
  578. $.each(node.links(), function(index, link) {
  579. var next_node = self.registry.get(link.child());
  580. var collection = ko.observableArray([]);
  581. node.children.push(collection);
  582. join = methodChooser(next_node, collection, false, true);
  583. });
  584. // Add join to collection, then find its single child.
  585. return methodChooser(join, collection, true, true);
  586. case 'decision':
  587. collection.push(node);
  588. // Waits for end, then runs through children of end node
  589. var end = null;
  590. $.each(node.links(), function(index, link) {
  591. var next_node = self.registry.get(link.child());
  592. var collection = ko.observableArray([]);
  593. node.children.push(collection);
  594. end = methodChooser(next_node, collection, true, true);
  595. });
  596. // Add end
  597. return methodChooser(node.end(), collection, true, true);
  598. default:
  599. // Should never get here.
  600. return node;
  601. }
  602. };
  603. methodChooser(self.registry.get(self.start()), self.nodes, false, true);
  604. $(".tooltip").remove();
  605. $("[relz=tooltip]").tooltip({placement: "left", delay: 0});
  606. $("[relz=tooltip]").hover(function () {
  607. $(".tooltip").css("left", parseInt($(".tooltip").css("left")) - 10 + "px");
  608. }, function () {
  609. $(".tooltip").remove();
  610. });
  611. },
  612. rebuild: function() {
  613. var self = this;
  614. // Clear all children
  615. $.each(self.registry.nodes, function(index, node) {
  616. node.children.removeAll();
  617. });
  618. self.nodes.removeAll();
  619. // Rebuild
  620. self.build();
  621. self.draggables();
  622. self.droppables();
  623. self.el.trigger('workflow:rebuilt');
  624. },
  625. draggables: function() {
  626. var self = this;
  627. self.el.find('.node-action').each(function(index, el) {
  628. if (!$(el).hasClass('ui-draggable')) {
  629. $(el).find('.row-fluid').eq(0).css('cursor', 'move');
  630. $(el).draggable({
  631. containment: [ self.el.offset().left - 10, self.el.offset().top - 10,
  632. self.el.offset().left + self.el.outerWidth(), self.el.offset().top + self.el.outerHeight() ],
  633. refreshPositions: true,
  634. revert: true,
  635. zIndex: 1000,
  636. opacity: 0.45,
  637. revertDuration: 0,
  638. cancel: '.node-action-bar'
  639. });
  640. }
  641. });
  642. },
  643. droppables: function() {
  644. var self = this;
  645. self.el.find('.node-link').each(function(index, el) {
  646. $(el).droppable({
  647. 'hoverClass': 'node-link-hover',
  648. 'greedy': true,
  649. 'accept': '.node-action',
  650. 'tolerance': 'pointer'
  651. });
  652. });
  653. self.el.find('.node-decision-end').each(function(index, el) {
  654. $(el).droppable({
  655. 'hoverClass': 'node-link-hover',
  656. 'greedy': true,
  657. 'accept': '.node-action',
  658. 'tolerance': 'pointer'
  659. });
  660. });
  661. self.el.find('.node-fork .action').each(function(index, el) {
  662. $(el).droppable({
  663. 'hoverClass': 'node-fork-hover',
  664. 'greedy': true,
  665. 'accept': '.node-action',
  666. 'tolerance': 'pointer'
  667. });
  668. });
  669. self.el.find('.node-decision .action').each(function(index, el) {
  670. $(el).droppable({
  671. 'hoverClass': 'node-fork-hover',
  672. 'greedy': true,
  673. 'accept': '.node-action',
  674. 'tolerance': 'pointer'
  675. });
  676. });
  677. self.el.find('.node-action .action').each(function(index, el) {
  678. $(el).droppable({
  679. 'hoverClass': 'node-action-hover',
  680. 'greedy': true,
  681. 'accept': '.node-action',
  682. 'tolerance': 'pointer'
  683. });
  684. });
  685. },
  686. dragAndDropEvents: function( options ) {
  687. var self = this;
  688. var read_only_error_handler = options.read_only_error_handler;
  689. // Build event delegations.
  690. // Drop on node link
  691. self.el.on('drop', '.node-link', function(e, ui) {
  692. if (self.read_only()) {
  693. read_only_error_handler();
  694. return false;
  695. }
  696. // draggable should be a node.
  697. // droppable should be a link.
  698. var draggable = ko.contextFor(ui.draggable[0]).$data;
  699. var droppable = ko.contextFor(this).$data;
  700. // If newParent is fork, prepend to child instead.
  701. // This will make it so that we can drop and drop to the top of a node list within a fork.
  702. var newParent = self.registry.get(droppable.parent());
  703. if (newParent.id() != draggable.id() && !newParent.isChild(draggable)) {
  704. switch(newParent.node_type()) {
  705. case 'fork':
  706. case 'decision':
  707. // Children that are forks or decisions may be removed when we detach.
  708. // Remember children in this case to find correct node.
  709. var child = self.registry.get(droppable.child());
  710. var children_of_child = [];
  711. if (child.node_type() == 'fork' || child.node_type() == 'decision') {
  712. children_of_child = child.findChildren();
  713. }
  714. draggable.detach();
  715. // Make sure fork and decision still exist
  716. // Otherwise find child that replaced it
  717. var child_to_replace = child;
  718. if (child.node_type() == 'fork' || child.node_type() == 'decision') {
  719. if (!self.registry.get(child.id())) {
  720. // Guaranteed one because the fork is being removed right now.
  721. child_to_replace = $.grep(children_of_child, function(child_of_child, index) {
  722. return child_of_child.findParents().length > 0;
  723. })[0];
  724. }
  725. }
  726. newParent.replaceChild(child_to_replace, draggable);
  727. draggable.addChild(child_to_replace);
  728. break;
  729. case 'join':
  730. case 'decisionend':
  731. // Join and decisionend may disappear when we detach...
  732. // Remember its children and append to child.
  733. var parents = newParent.findParents();
  734. draggable.detach();
  735. if (newParent.findParents().length < 2) {
  736. $.each(parents, function(index, parent) {
  737. parent.append(draggable);
  738. });
  739. } else {
  740. newParent.append(draggable);
  741. }
  742. break;
  743. default:
  744. draggable.detach();
  745. newParent.append(draggable);
  746. break;
  747. }
  748. workflow.is_dirty( true );
  749. self.rebuild();
  750. }
  751. // Prevent bubbling events
  752. return false;
  753. });
  754. // Drop on fork
  755. self.el.on('drop', '.node-fork', function(e, ui) {
  756. if (self.read_only()) {
  757. read_only_error_handler();
  758. return false;
  759. }
  760. // draggable should be a node.
  761. // droppable should be a fork.
  762. var draggable = ko.contextFor(ui.draggable[0]).$data;
  763. var droppable = ko.contextFor(this).$data;
  764. if (!droppable.isChild(draggable) && droppable.id() != draggable.id()) {
  765. draggable.detach();
  766. droppable.append(draggable);
  767. self.rebuild();
  768. }
  769. // Prevent bubbling events
  770. return false;
  771. });
  772. // Drop on decision
  773. self.el.on('drop', '.node-decision', function(e, ui) {
  774. if (self.read_only()) {
  775. read_only_error_handler();
  776. return false;
  777. }
  778. // draggable should be a node.
  779. // droppable should be a fork.
  780. var draggable = ko.contextFor(ui.draggable[0]).$data;
  781. var droppable = ko.contextFor(this).$data;
  782. if (!droppable.isChild(draggable) && droppable.id() != draggable.id()) {
  783. draggable.detach();
  784. droppable.append(draggable);
  785. self.rebuild();
  786. }
  787. // Prevent bubbling events
  788. return false;
  789. });
  790. // Drop on action
  791. self.el.on('drop', '.node-action', function(e, ui) {
  792. if (self.read_only()) {
  793. read_only_error_handler();
  794. return false;
  795. }
  796. // draggable should be a node.
  797. // droppable should be a node.
  798. var draggable = ko.contextFor(ui.draggable[0]).$data;
  799. var droppable = ko.contextFor(this).$data;
  800. // Create a fork and join programatically.
  801. var newParents = droppable.findParents();
  802. // skip forking beneathe a decision node
  803. if (droppable.id() != draggable.id() && newParents.length == 1 && draggable.findParents().length <= 1) {
  804. var ForkModel = NodeModelChooser('fork');
  805. var JoinModel = NodeModelChooser('join');
  806. var fork = new ForkModel({
  807. id: IdGeneratorTable['fork'].nextId(),
  808. description: "",
  809. workflow: self.id,
  810. node_type: "fork",
  811. child_links: []
  812. });
  813. var forkNode = new ForkNode(self, fork, self.registry);
  814. var join = new JoinModel({
  815. id: IdGeneratorTable['join'].nextId(),
  816. description: "",
  817. workflow: self.id,
  818. node_type: "join",
  819. child_links: []
  820. });
  821. var joinNode = new Node(self, join, self.registry);
  822. self.registry.add(forkNode.id(), forkNode);
  823. self.registry.add(joinNode.id(), joinNode);
  824. forkNode.addChild(joinNode);
  825. // Handles fork creation.
  826. $.each(newParents, function(index, parent) {
  827. parent.replaceChild(droppable, forkNode);
  828. });
  829. draggable.detach();
  830. forkNode.append(draggable);
  831. forkNode.append(droppable);
  832. self.rebuild();
  833. }
  834. // Prevent bubbling events.
  835. return false;
  836. });
  837. }
  838. });
  839. return module;
  840. };
  841. var Workflow = WorkflowModule($, nodeModelChooser, Node, ForkNode, DecisionNode, IdGeneratorTable);
  842. // Manage Kill Module
  843. function ManageKillModule($, workflow, NodeModelChooser, Node, NodeModel) {
  844. var email_action = null;
  845. var parents = workflow.kill.findParents();
  846. var email_enabled = ko.observable();
  847. if (parents.length > 0) {
  848. email_action = parents[0];
  849. email_enabled(true);
  850. } else {
  851. var email_json = {
  852. "description": "",
  853. "workflow": workflow.id(),
  854. "child_links": [],
  855. "node_type": "email",
  856. "message": "Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]",
  857. "name": 'killemail',
  858. "id": IdGeneratorTable['email'].nextId()
  859. };
  860. var NodeModel = NodeModelChooser(email_json.node_type);
  861. var model = new NodeModel(email_json);
  862. email_action = new Node(workflow, model, workflow.registry);
  863. email_enabled(false);
  864. }
  865. var replace_email = function(email_action) {
  866. email_action.removeAllChildren();
  867. email_action.removeErrorChildren();
  868. $.each(workflow.registry.nodes, function(index, node) {
  869. if (node.getErrorChild() && node.id() != email_action.id()) {
  870. node.putErrorChild(workflow.kill);
  871. }
  872. });
  873. };
  874. var replace_kill = function(email_action) {
  875. if (email_action.findChildren().length == 0) {
  876. email_action.addChild(workflow.kill, 'ok');
  877. }
  878. if (!email_action.getErrorChild()) {
  879. email_action.putErrorChild(workflow.kill);
  880. }
  881. $.each(workflow.registry.nodes, function(index, node) {
  882. if (node.getErrorChild() && node.id() != email_action.id()) {
  883. node.putErrorChild(email_action);
  884. }
  885. });
  886. };
  887. // Add/Remove kill email action node from registry so that it is not sent to server.
  888. email_action.to.subscribe(function(value) {
  889. if (value && !email_enabled()) {
  890. workflow.registry.add(email_action.id(), email_action);
  891. replace_kill(email_action);
  892. email_enabled(true);
  893. } else if (!value && email_enabled()) {
  894. replace_email(email_action);
  895. email_enabled(false);
  896. workflow.registry.remove(email_action.id());
  897. email_action.id(IdGeneratorTable['email'].nextId());
  898. }
  899. return value;
  900. });
  901. // View model
  902. return {
  903. 'enabled': email_enabled,
  904. 'isValid': function() {
  905. return email_action.validate();
  906. },
  907. 'context': ko.observable({
  908. 'node': ko.observable(email_action),
  909. 'read_only': ko.observable(workflow.read_only())
  910. })
  911. };
  912. };