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[fnpeditor.git] / src / editor / modules / data / data.js
1 define([
2     'libs/jquery',
3     'views/dialog/dialog',
4     'wlxml/wlxml',
5     'wlxml/extensions/list/list',
6     'fnpjs/logging/logging',
7     'fnpjs/datetime',
8     './document'
9 ], function($, Dialog, wlxml, listExtension, logging, datetime, Document) {
10
11 'use strict';
12 /* global gettext, alert, window */
13
14 var logger = logging.getLogger('editor.modules.data');
15
16
17 return function(sandbox) {
18
19     var data = sandbox.getBootstrappedData(),
20         documentDirty = false,
21         draftDirty = false,
22         wlxmlDocument;
23
24
25     var loadDocument = function(text, isDraft, draftTimestamp) {
26         logger.debug('loading document');
27         var xmlValid = true;
28         try {
29             wlxmlDocument = wlxml.WLXMLDocumentFromXML(text, {editorConfig: sandbox.getConfig()}, Document.Document);
30         } catch(e) {
31             logger.exception(e);
32             alert(gettext('The content of this document seems to be invalid - only XML source editing will be possible. :(')); // TODO
33             wlxmlDocument = wlxml.WLXMLDocumentFromXML(text, {}, Document.DumbDocument);
34             xmlValid = false;
35         }
36
37         Object.keys(data)
38             .filter(function(key) {
39                 return key !== 'history' && key !== 'document';
40             })
41             .forEach(function(key) {
42                 wlxmlDocument.setProperty(key, data[key]);
43             });
44
45         wlxmlDocument.registerExtension(listExtension);
46         sandbox.getPlugins().forEach(function(plugin) {
47             if(plugin.documentExtension) {
48                 wlxmlDocument.registerExtension(plugin.documentExtension);
49             }
50         });
51         
52         var modificationFlag = true;
53         var handleChange = function() {
54             documentDirty = true;
55             draftDirty = true;
56             modificationFlag = true;
57         };
58         wlxmlDocument.on('change', handleChange);
59         wlxmlDocument.on('contentSet', handleChange);
60
61         if(window.localStorage) {
62             window.setInterval(function() {
63                 var timestamp = datetime.currentStrfmt(),
64                     key = getLocalStorageKey();
65                 if(modificationFlag) {
66                     modificationFlag = false;
67                     return;
68                 }
69                 if(wlxmlDocument && documentDirty && draftDirty) {
70                     logger.debug('Saving draft to local storage.');
71                     sandbox.publish('savingStarted', 'local');
72                     window.localStorage.setItem(key.content, wlxmlDocument.toXML());
73                     window.localStorage.setItem(key.contentTimestamp, timestamp);
74                     sandbox.publish('savingEnded', 'success', 'local', {timestamp: timestamp});
75                     draftDirty = false;
76                 }
77             }, sandbox.getConfig().autoSaveInterval || 2500);
78         }
79         sandbox.publish('ready', isDraft, draftTimestamp, xmlValid);
80     };
81     
82     function readCookie(name) {
83         /* global escape, unescape, document */
84         var nameEQ = escape(name) + '=';
85         var ca = document.cookie.split(';');
86         for (var i = 0; i < ca.length; i++) {
87             var c = ca[i];
88             while (c.charAt(0) === ' ') {
89                 c = c.substring(1, c.length);
90             }
91             if (c.indexOf(nameEQ) === 0) {
92                 return unescape(c.substring(nameEQ.length, c.length));
93             }
94         }
95         return null;
96     }
97     
98     $.ajaxSetup({
99         crossDomain: false,
100         beforeSend: function(xhr, settings) {
101             if (!(/^(GET|HEAD|OPTIONS|TRACE)$/.test(settings.type))) {
102                 xhr.setRequestHeader('X-CSRFToken', readCookie('csrftoken'));
103             }
104         }
105     });
106     
107     var reloadHistory = function() {
108         $.ajax({
109             method: 'get',
110             url: sandbox.getConfig().documentHistoryUrl(data.document_id),
111             success: function(history) {
112                 data.history = history;
113                 sandbox.publish('historyItemAdded', history.slice(-1)[0]);
114             },
115         });
116     };
117
118     var getLocalStorageKey = function(forVersion) {
119         var base = 'draft-id:' + data.document_id + '-ver:' + (forVersion || wlxmlDocument.properties.version);
120         return {
121             content: base,
122             contentTimestamp: base + '-content-timestamp'
123         };
124     };
125
126    
127     return {
128         start: function() {
129             var text;
130             if(window.localStorage) {
131                 text = window.localStorage.getItem(getLocalStorageKey(data.version).content);
132
133                 var timestamp = window.localStorage.getItem(getLocalStorageKey(data.version).contentTimestamp),
134                     usingDraft;
135                 if(text) {
136                     logger.debug('Local draft exists');
137                     var dialog = Dialog.create({
138                         title: gettext('Local draft of a document exists'),
139                         text: gettext('Unsaved local draft of this version of the document exists in your browser. Do you want to load it instead?'),
140                         executeButtonText: gettext('Yes, restore local draft'),
141                         cancelButtonText: gettext('No, use version loaded from the server')
142                     });
143                     dialog.on('cancel', function() {
144                         logger.debug('Bootstrapped version chosen');
145                         usingDraft = false;
146                         text = sandbox.getBootstrappedData().document;
147                         
148                     });
149                     dialog.on('execute', function(event) {
150                         logger.debug('Local draft chosen');
151                         usingDraft = true;
152                         event.success();
153                     });
154                     dialog.show();
155                     dialog.on('close', function() {
156                         loadDocument(text, usingDraft, timestamp);
157                     });
158                 } else {
159                     loadDocument(sandbox.getBootstrappedData().document, false);
160                 }
161             } else {
162                 loadDocument(sandbox.getBootstrappedData().document, false);
163             }
164         },
165         getDocument: function() {
166             return wlxmlDocument;
167         },
168         saveDocument: function() {
169             var documentSaveForm = $.extend({
170                         fields: [],
171                         content_field_name: 'text',
172                         version_field_name: 'version'
173                     },
174                     sandbox.getConfig().documentSaveForm
175                 ),
176                 dialog = Dialog.create({
177                     fields: documentSaveForm.fields,
178                     title: gettext('Save Document'),
179                     executeButtonText: gettext('Save'),
180                     cancelButtonText: gettext('Cancel')
181                 });
182             /* Set stage field initial value to current document stage. */
183             for (var i in documentSaveForm.fields) {
184                 if (documentSaveForm.fields[i].name == 'textsave-stage') {
185                     documentSaveForm.fields[i].initialValue = data.stage;
186                 }
187             }
188             
189             dialog.on('execute', function(event) {
190                 sandbox.publish('savingStarted', 'remote');
191
192                 var formData = event.formData;
193                 formData[documentSaveForm.content_field_name] = wlxmlDocument.toXML();
194                 formData[documentSaveForm.version_field_name] = wlxmlDocument.properties.version;
195                 if(sandbox.getConfig().jsonifySentData) {
196                     formData = JSON.stringify(formData);
197                 }
198
199                 dialog.toggleButtons(false);
200                 $.ajax({
201                     method: 'post',
202                     url: sandbox.getConfig().documentSaveUrl(data.document_id),
203                     data: formData,
204                     success: function(data) {
205                         event.success();
206                         sandbox.publish('savingEnded', 'success', 'remote', data);
207
208                         Object.keys(data)
209                             .filter(function(key) {
210                                 return key !== 'text';
211                             })
212                             .forEach(function(key) {
213                                 wlxmlDocument.setProperty(key, data[key]);
214                             });
215
216                         reloadHistory();
217                     },
218                     error: function(data) {
219                         event.error();
220                         sandbox.publish('savingEnded', 'error', 'remote');
221                         var dialog = Dialog.create({
222                             title: gettext('Error'),
223                             text: JSON.parse(data.responseText).text.join('\n'),
224                             executeButtonText: gettext('Close')
225                         });
226                         dialog.show();
227                         dialog.on('execute', function(e) {
228                             e.success();
229                         });
230                     }
231                 });
232             });
233             dialog.on('cancel', function() {
234             });
235             dialog.show();
236             
237
238         },
239         getHistory: function() {
240             return data.history;
241         },
242         fetchDiff: function(ver1, ver2) {
243             $.ajax({
244                 method: 'get',
245                 url: sandbox.getConfig().documentDiffUrl(data.document_id),
246                 data: {from: ver1, to: ver2},
247                 success: function(data) {
248                     sandbox.publish('diffFetched', {table: data, ver1: ver1, ver2: ver2});
249                 },
250             });
251         },
252         restoreVersion: function(version) {
253             var documentRestoreForm = $.extend({
254                         fields: [],
255                         version_field_name: 'version'
256                     },
257                     sandbox.getConfig().documentRestoreForm
258                 ),
259                 dialog = Dialog.create({
260                     fields: documentRestoreForm.fields,
261                     title: gettext('Restore Version'),
262                     executeButtonText: gettext('Restore'),
263                     cancelButtonText: gettext('Cancel')
264                 });
265
266             dialog.on('execute', function(event) {
267                 var formData = event.formData;
268                 formData[documentRestoreForm.version_field_name] = version;
269                 sandbox.publish('restoringStarted', {version: version});
270                 if(sandbox.getConfig().jsonifySentData) {
271                     formData = JSON.stringify(formData);
272                 }
273                 $.ajax({
274                     method: 'post',
275                     dataType: 'json',
276                     url: sandbox.getConfig().documentRestoreUrl(data.document_id),
277                     data: formData,
278                     success: function(data) {
279                         Object.keys(data)
280                             .filter(function(key) {
281                                 return key !== 'document';
282                             })
283                             .forEach(function(key) {
284                                 wlxmlDocument.setProperty(key, data[key]);
285                             });
286                         reloadHistory();
287                         wlxmlDocument.loadXML(data.document);
288                         documentDirty = false;
289                         sandbox.publish('documentReverted', data.version);
290                         event.success();
291                     },
292                 });
293             });
294             dialog.show();
295         },
296         publishVersion: function(revision) {
297             var documentPublishForm = $.extend({
298                         fields: [],
299                         revision_field_name: 'revision'
300                     },
301                     sandbox.getConfig().documentPublishForm
302                 ),
303                 dialog = Dialog.create({
304                     fields: documentPublishForm.fields,
305                     title: gettext('Publish'),
306                     executeButtonText: gettext('Publish'),
307                     cancelButtonText: gettext('Cancel')
308                 });
309
310             dialog.on('execute', function(event) {
311                 var formData = event.formData;
312                 formData[documentPublishForm.revision_field_name] = revision;
313                 sandbox.publish('publishingStarted', {version: revision});
314                 if(sandbox.getConfig().jsonifySentData) {
315                     formData = JSON.stringify(formData);
316                 }
317                 $.ajax({
318                     method: 'post',
319                     //dataType: 'json',
320                     dataType: 'text',
321                     url: sandbox.getConfig().documentPublishUrl,
322                     data: formData,
323                     success: function(data) {
324                         reloadHistory();
325                         sandbox.publish('documentPublished');
326                         event.success();
327                     },
328                 });
329             });
330             dialog.show();
331         },
332         dropDraft: function() {
333             logger.debug('Dropping a draft...');
334             wlxmlDocument.loadXML(sandbox.getBootstrappedData().document);
335             draftDirty = false;
336             logger.debug('Draft dropped');
337             sandbox.publish('draftDropped');
338         }
339     };
340 };
341
342 });