dcf669e293e94b9e12d92933e102e610e0b8fb04
[moodle.git] / comment / comment.js
1 // This file is part of Moodle - http://moodle.org/
2 //
3 // Moodle is free software: you can redistribute it and/or modify
4 // it under the terms of the GNU General Public License as published by
5 // the Free Software Foundation, either version 3 of the License, or
6 // (at your option) any later version.
7 //
8 // Moodle is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 // GNU General Public License for more details.
12 //
13 // You should have received a copy of the GNU General Public License
14 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
16 /**
17  * Comment Helper
18  * @author Dongsheng Cai <dongsheng@moodle.com>
19  */
20 M.core_comment = {
21     /**
22      * Initialize commenting system
23      */
24     init: function(Y, options) {
25         var CommentHelper = function(args) {
26             CommentHelper.superclass.constructor.apply(this, arguments);
27         };
28         CommentHelper.NAME = "COMMENT";
29         CommentHelper.ATTRS = {
30             options: {},
31             lang: {}
32         };
33         Y.extend(CommentHelper, Y.Base, {
34             api: M.cfg.wwwroot+'/comment/comment_ajax.php',
35             initializer: function(args) {
36                 var scope = this;
37                 this.client_id = args.client_id;
38                 this.itemid = args.itemid;
39                 this.commentarea = args.commentarea;
40                 this.component = args.component;
41                 this.courseid = args.courseid;
42                 this.contextid = args.contextid;
43                 this.autostart = (args.autostart);
44                 // expand comments?
45                 if (this.autostart) {
46                     this.view(args.page);
47                 }
48                 // load comments
49                 var handle = Y.one('#comment-link-'+this.client_id);
50                 // hide toggle link
51                 if (handle) {
52                     if (args.notoggle) {
53                         handle.setStyle('display', 'none');
54                     }
55                     handle.on('click', function(e) {
56                         e.preventDefault();
57                         this.view(0);
58                         return false;
59                     }, this);
60                 }
61                 scope.toggle_textarea(false);
62                 CommentHelper.confirmoverlay = new Y.Overlay({
63 bodyContent: '<div class="comment-delete-confirm"><a href="#" id="confirmdelete-'+this.client_id+'">'+M.str.moodle.yes+'</a> <a href="#" id="canceldelete-'+this.client_id+'">'+M.str.moodle.no+'</a></div>',
64                                         visible: false
65                                         });
66                 CommentHelper.confirmoverlay.render(document.body);
67             },
68             post: function() {
69                 var ta = Y.one('#dlg-content-'+this.client_id);
70                 var scope = this;
71                 var value = ta.get('value');
72                 if (value && value != M.str.moodle.addcomment) {
73                     var params = {'content': value};
74                     this.request({
75                         action: 'add',
76                         scope: scope,
77                         params: params,
78                         callback: function(id, obj, args) {
79                             var scope = args.scope;
80                             var cid = scope.client_id;
81                             var ta = Y.one('#dlg-content-'+cid);
82                             ta.set('value', '');
83                             scope.toggle_textarea(false);
84                             var container = Y.one('#comment-list-'+cid);
85                             var result = scope.render([obj], true);
86                             var newcomment = Y.Node.create(result.html);
87                             container.appendChild(newcomment);
88                             var ids = result.ids;
89                             var linktext = Y.one('#comment-link-text-'+cid);
90                             if (linktext) {
91                                 linktext.set('innerHTML', M.str.moodle.comments + ' ('+obj.count+')');
92                             }
93                             for(var i in ids) {
94                                 var attributes = {
95                                     color: { to: '#06e' },
96                                     backgroundColor: { to: '#FFE390' }
97                                 };
98                                 var anim = new YAHOO.util.ColorAnim(ids[i], attributes);
99                                 anim.animate();
100                             }
101                             scope.register_pagination();
102                             scope.register_delete_buttons();
103                         }
104                     }, true);
105                 } else {
106                     var attributes = {
107                         backgroundColor: { from: '#FFE390', to:'#FFFFFF' }
108                     };
109                     var anim = new YAHOO.util.ColorAnim('dlg-content-'+cid, attributes);
110                     anim.animate();
111                 }
112             },
113             request: function(args, noloading) {
114                 var params = {};
115                 var scope = this;
116                 if (args['scope']) {
117                     scope = args['scope'];
118                 }
119                 //params['page'] = args.page?args.page:'';
120                 // the form element only accept certain file types
121                 params['sesskey']   = M.cfg.sesskey;
122                 params['action']    = args.action?args.action:'';
123                 params['client_id'] = this.client_id;
124                 params['itemid']    = this.itemid;
125                 params['area']      = this.commentarea;
126                 params['courseid']  = this.courseid;
127                 params['contextid'] = this.contextid;
128                 params['component'] = this.component;
129                 if (args['params']) {
130                     for (i in args['params']) {
131                         params[i] = args['params'][i];
132                     }
133                 }
134                 var cfg = {
135                     method: 'POST',
136                     on: {
137                         complete: function(id,o,p) {
138                             if (!o) {
139                                 alert('IO FATAL');
140                                 return false;
141                             }
142                             var data = Y.JSON.parse(o.responseText);
143                             if (data.error) {
144                                 if (data.error == 'require_login') {
145                                     args.callback(id,data,p);
146                                     return true;
147                                 }
148                                 alert(data.error);
149                                 return false;
150                             } else {
151                                 args.callback(id,data,p);
152                                 return true;
153                             }
154                         }
155                     },
156                     arguments: {
157                         scope: scope
158                     },
159                     headers: {
160                         'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
161                         'User-Agent': 'MoodleComment/3.0'
162                     },
163                     data: build_querystring(params)
164                 };
165                 if (args.form) {
166                     cfg.form = args.form;
167                 }
168                 Y.io(this.api, cfg);
169                 if (!noloading) {
170                     this.wait();
171                 }
172             },
173             render: function(list, newcmt) {
174                 var ret = {};
175                 ret.ids = [];
176                 var template = Y.one('#cmt-tmpl');
177                 var html = '';
178                 for(var i in list) {
179                     var htmlid = 'comment-'+list[i].id+'-'+this.client_id;
180                     var val = template.get('innerHTML');
181                     if (list[i].profileurl) {
182                         val = val.replace('___name___', '<a href="'+list[i].profileurl+'">'+list[i].fullname+'</a>');
183                     } else {
184                         val = val.replace('___name___', list[i].fullname);
185                     }
186                     if (list[i]['delete']||newcmt) {
187                         list[i].content = '<div class="comment-delete"><a href="#" id ="comment-delete-'+this.client_id+'-'+list[i].id+'" title="'+M.str.moodle.deletecomment+'"><img src="'+M.util.image_url('t/delete', 'core')+'" /></a></div>' + list[i].content;
188                     }
189                     val = val.replace('___time___', list[i].time);
190                     val = val.replace('___picture___', list[i].avatar);
191                     val = val.replace('___content___', list[i].content);
192                     val = '<li id="'+htmlid+'">'+val+'</li>';
193                     ret.ids.push(htmlid);
194                     html = (val+html);
195                 }
196                 ret.html = html;
197                 return ret;
198             },
199             load: function(page) {
200                 var scope = this;
201                 var container = Y.one('#comment-ctrl-'+this.client_id);
202                 var params = {
203                     'action': 'get',
204                     'page': page
205                 };
206                 this.request({
207                     scope: scope,
208                     params: params,
209                     callback: function(id, ret, args) {
210                         var linktext = Y.one('#comment-link-text-'+scope.client_id);
211                         if (ret.count && linktext) {
212                             linktext.set('innerHTML', M.str.moodle.comments + ' ('+ret.count+')');
213                         }
214                         var container = Y.one('#comment-list-'+scope.client_id);
215                         var pagination = Y.one('#comment-pagination-'+scope.client_id);
216                         if (ret.pagination) {
217                             pagination.set('innerHTML', ret.pagination);
218                         } else {
219                             //empty paging bar
220                             pagination.set('innerHTML', '');
221                         }
222                         if (ret.error == 'require_login') {
223                             var result = {};
224                             result.html = M.str.moodle.commentsrequirelogin;
225                         } else {
226                             var result = scope.render(ret.list);
227                         }
228                         container.set('innerHTML', result.html);
229                         var img = Y.one('#comment-img-'+scope.client_id);
230                         if (img) {
231                             img.set('src', M.util.image_url('t/expanded', 'core'));
232                         }
233                         args.scope.register_pagination();
234                         args.scope.register_delete_buttons();
235                     }
236                 });
237             },
239             dodelete: function(id) { // note: delete is a reserved word in javascript, chrome and safary do not like it at all here!
240                 var scope = this;
241                 var params = {'commentid': id};
242                 scope.cancel_delete();
243                 function remove_dom(type, anim, cmt) {
244                     cmt.remove();
245                 }
246                 this.request({
247                     action: 'delete',
248                     scope: scope,
249                     params: params,
250                     callback: function(id, resp, args) {
251                         var htmlid= 'comment-'+resp.commentid+'-'+resp.client_id;
252                         var attributes = {
253                             width:{to:0},
254                             height:{to:0}
255                         };
256                         var cmt = Y.one('#'+htmlid);
257                         cmt.setStyle('overflow', 'hidden');
258                         var anim = new YAHOO.util.Anim(htmlid, attributes, 1, YAHOO.util.Easing.easeOut);
259                         anim.onComplete.subscribe(remove_dom, cmt, this);
260                         anim.animate();
261                     }
262                 }, true);
263             },
264             register_actions: function() {
265                 // add new comment
266                 var action_btn = Y.one('#comment-action-post-'+this.client_id);
267                 if (action_btn) {
268                     action_btn.on('click', function(e) {
269                         e.preventDefault();
270                         this.post();
271                         return false;
272                     }, this);
273                 }
274                 // cancel comment box
275                 var cancel = Y.one('#comment-action-cancel-'+this.client_id);
276                 if (cancel) {
277                     cancel.on('click', function(e) {
278                         e.preventDefault();
279                         this.view(0);
280                         return false;
281                     }, this);
282                 }
283             },
284             register_delete_buttons: function() {
285                 var scope = this;
286                 // page buttons
287                 Y.all('div.comment-delete a').each(
288                     function(node, id) {
289                         var theid = node.get('id');
290                         var parseid = new RegExp("comment-delete-"+scope.client_id+"-(\\d+)", "i");
291                         var commentid = theid.match(parseid);
292                         if (!commentid) {
293                             return;
294                         }
295                         if (commentid[1]) {
296                             Y.Event.purgeElement('#'+theid, false, 'click');
297                         }
298                         node.on('click', function(e, node) {
299                             e.preventDefault();
300                             var width = CommentHelper.confirmoverlay.bodyNode.getStyle('width');
301                             var re = new RegExp("(\\d+).*", "i");
302                             var result = width.match(re);
303                             if (result[1]) {
304                                 width = Number(result[1]);
305                             } else {
306                                 width = 0;
307                             }
308                             //CommentHelper.confirmoverlay.set('xy', [e.pageX-(width/2), e.pageY]);
309                             CommentHelper.confirmoverlay.set('xy', [e.pageX-width-5, e.pageY]);
310                             CommentHelper.confirmoverlay.set('visible', true);
311                             Y.one('#canceldelete-'+scope.client_id).on('click', function(e) {
312                                                                 e.preventDefault();
313                                 scope.cancel_delete();
314                                 });
315                             Y.Event.purgeElement('#confirmdelete-'+scope.client_id, false, 'click');
316                             Y.one('#confirmdelete-'+scope.client_id).on('click', function(e) {
317                                                                         e.preventDefault();
318                                     if (commentid[1]) {
319                                         scope.dodelete(commentid[1]);
320                                     }
321                                 });
322                         }, scope, node);
323                     }
324                 );
325             },
326             cancel_delete: function() {
327                 CommentHelper.confirmoverlay.set('visible', false);
328             },
329             register_pagination: function() {
330                 var scope = this;
331                 // page buttons
332                 Y.all('#comment-pagination-'+this.client_id+' a').each(
333                     function(node, id) {
334                         node.on('click', function(e, node) {
335                             e.preventDefault();
336                             var id = node.get('id');
337                             var re = new RegExp("comment-page-"+this.client_id+"-(\\d+)", "i");
338                             var result = id.match(re);
339                             this.load(result[1]);
340                         }, scope, node);
341                     }
342                 );
343             },
344             view: function(page) {
345                 var container = Y.one('#comment-ctrl-'+this.client_id);
346                 var ta = Y.one('#dlg-content-'+this.client_id);
347                 var img = Y.one('#comment-img-'+this.client_id);
348                 var d = container.getStyle('display');
349                 if (d=='none'||d=='') {
350                     // show
351                     if (!this.autostart) {
352                         this.load(page);
353                     } else {
354                         this.register_delete_buttons();
355                         this.register_pagination();
356                     }
357                     container.setStyle('display', 'block');
358                     if (img) {
359                         img.set('src', M.util.image_url('t/expanded', 'core'));
360                     }
361                 } else {
362                     // hide
363                     container.setStyle('display', 'none');
364                     img.set('src', M.util.image_url('t/collapsed', 'core'));
365                     if (ta) {
366                         ta.set('value','');
367                     }
368                 }
369                 if (ta) {
370                     //toggle_textarea.apply(ta, [false]);
371                     //// reset textarea size
372                     ta.on('click', function() {
373                         this.toggle_textarea(true);
374                     }, this);
375                     //ta.onkeypress = function() {
376                         //if (this.scrollHeight > this.clientHeight && !window.opera)
377                             //this.rows += 1;
378                     //}
379                     ta.on('blur', function() {
380                         this.toggle_textarea(false);
381                     }, this);
382                 }
383                 this.register_actions();
384                 return false;
385             },
386             toggle_textarea: function(focus) {
387                 var t = Y.one('#dlg-content-'+this.client_id);
388                 if (focus) {
389                     if (t.get('value') == M.str.moodle.addcomment) {
390                         t.set('value', '');
391                         t.setStyle('color', 'black');
392                     }
393                 }else{
394                     if (t.get('value') == '') {
395                         t.set('value', M.str.moodle.addcomment);
396                         t.setStyle('color','grey');
397                         t.set('rows', 2);
398                     }
399                 }
400             },
401             wait: function() {
402                 var container = Y.one('#comment-list-'+this.client_id);
403                 container.set('innerHTML', '<div class="mdl-align"><img src="'+M.util.image_url('i/loading_small', 'core')+'" /></div>');
404             }
405         });
407         new CommentHelper(options);
408     },
409     init_admin: function(Y) {
410         var select_all = Y.one('#comment_select_all');
411         select_all.on('click', function(e) {
412             var comments = document.getElementsByName('comments');
413             var checked = false;
414             for (var i in comments) {
415                 if (comments[i].checked) {
416                     checked=true;
417                 }
418             }
419             for (i in comments) {
420                 comments[i].checked = !checked;
421             }
422             this.set('checked', !checked);
423         });
425         var comments_delete = Y.one('#comments_delete');
426         if (comments_delete) {
427             comments_delete.on('click', function(e) {
428                 e.preventDefault();
429                 var list = '';
430                 var comments = document.getElementsByName('comments');
431                 for (var i in comments) {
432                     if (typeof comments[i] == 'object' && comments[i].checked) {
433                         list += (comments[i].value + '-');
434                     }
435                 }
436                 if (!list) {
437                     return;
438                 }
439                 var args = {};
440                 args.message = M.str.admin.confirmdeletecomments;
441                 args.callback = function() {
442                     var url = M.cfg.wwwroot + '/comment/index.php';
444                     var data = {
445                         'commentids': list,
446                         'sesskey': M.cfg.sesskey,
447                         'action': 'delete'
448                     };
449                     var cfg = {
450                         method: 'POST',
451                         on: {
452                             complete: function(id,o,p) {
453                                 if (!o) {
454                                     alert('IO FATAL');
455                                     return;
456                                 }
457                                 if (o.responseText == 'yes') {
458                                     location.reload();
459                                 }
460                             }
461                         },
462                         arguments: {
463                             scope: this
464                         },
465                         headers: {
466                             'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
467                             'User-Agent': 'MoodleComment/3.0'
468                         },
469                         data: build_querystring(data)
470                     };
471                     Y.io(url, cfg);
472                 };
473                 M.util.show_confirm_dialog(e, args);
474             });
475         }
476     }
477 };