11f16d8f5c4b86bd4dcba0c31369bfb6107bcf61
[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.courseid = args.courseid;
41                 this.contextid = args.contextid;
42                 this.env = args.env;
43                 // expand comments?
44                 if (args.autostart) {
45                     this.view(args.page);
46                 }
47                 // hide toggle link
48                 if (args.notoggle) {
49                     Y.one('#comment-link-'+this.client_id).setStyle('display', 'none');
50                 }
51                 // load comments
52                 Y.one('#comment-link-'+this.client_id).on('click', function(e) {
53                     e.preventDefault();
54                     this.view(0);
55                     return false;
56                 }, this);
57                 CommentHelper.confirmoverlay = new Y.Overlay({
58 bodyContent: '<a href="#" id="confirmdelete-'+this.client_id+'">'+M.str.moodle.yes+'</a> <a href="#" id="canceldelete-'+this.client_id+'">'+M.str.moodle.no+'</a>',
59                                         visible: false
60                                         });
61                 CommentHelper.confirmoverlay.render(document.body);
62             },
63             post: function() {
64                 var ta = Y.one('#dlg-content-'+this.client_id);
65                 var scope = this;
66                 var value = ta.get('value');
67                 if (value && value != M.str.moodle.addcomment) {
68                     var params = {'content': value};
69                     this.request({
70                         action: 'add',
71                         scope: scope,
72                         params: params,
73                         callback: function(id, obj, args) {
74                             var scope = args.scope;
75                             var cid = scope.client_id;
76                             var ta = Y.one('#dlg-content-'+cid);
77                             ta.set('value', '');
78                             var container = Y.one('#comment-list-'+cid);
79                             var result = scope.render([obj], true);
80                             var newcomment = Y.Node.create(result.html);
81                             container.appendChild(newcomment);
82                             var ids = result.ids;
83                             var linktext = Y.one('#comment-link-text-'+cid);
84                             linktext.set('innerHTML', M.str.moodle.comments + ' ('+obj.count+')');
85                             for(var i in ids) {
86                                 var attributes = {
87                                     color: { to: '#06e' },
88                                     backgroundColor: { to: '#FFE390' }
89                                 };
90                                 var anim = new YAHOO.util.ColorAnim(ids[i], attributes);
91                                 anim.animate();
92                             }
93                             scope.register_pagination();
94                             scope.register_delete_buttons();
95                         }
96                     }, true);
97                 } else {
98                     var attributes = {
99                         backgroundColor: { from: '#FFE390', to:'#FFFFFF' }
100                     };
101                     var anim = new YAHOO.util.ColorAnim('dlg-content-'+cid, attributes);
102                     anim.animate();
103                 }
104             },
105             request: function(args, noloading) {
106                 var params = {};
107                 var scope = this;
108                 if (args['scope']) {
109                     scope = args['scope'];
110                 }
111                 //params['page'] = args.page?args.page:'';
112                 params['env']       = '';
113                 // the form element only accept certain file types
114                 params['sesskey']   = M.cfg.sesskey;
115                 params['action']    = args.action?args.action:'';
116                 params['client_id'] = this.client_id;
117                 params['itemid']    = this.itemid;
118                 params['area']      = this.commentarea;
119                 params['courseid']  = this.courseid;
120                 params['contextid'] = this.contextid;
121                 if (args['params']) {
122                     for (i in args['params']) {
123                         params[i] = args['params'][i];
124                     }
125                 }
126                 var cfg = {
127                     method: 'POST',
128                     on: {
129                         complete: function(id,o,p) {
130                             if (!o) {
131                                 alert('IO FATAL');
132                                 return false;
133                             }
134                             var data = Y.JSON.parse(o.responseText);
135                             if (data.error) {
136                                 alert(data.error);
137                                 return false;
138                             } else {
139                                 args.callback(id,data,p);
140                                 return true;
141                             }
142                         }
143                     },
144                     arguments: {
145                         scope: scope
146                     },
147                     headers: {
148                         'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
149                         'User-Agent': 'MoodleComment/3.0'
150                     },
151                     data: build_querystring(params)
152                 };
153                 if (args.form) {
154                     cfg.form = args.form;
155                 }
156                 Y.io(this.api, cfg);
157                 if (!noloading) {
158                     this.wait();
159                 }
160             },
161             render: function(list, newcmt) {
162                 var ret = {};
163                 ret.ids = [];
164                 var template = Y.one('#cmt-tmpl');
165                 var html = '';
166                 for(var i in list) {
167                     var htmlid = 'comment-'+list[i].id+'-'+this.client_id;
168                     var val = template.get('innerHTML');
169                     val = val.replace('___name___', list[i].username);
170                     if (list[i]['delete']||newcmt) {
171                         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;
172                     }
173                     val = val.replace('___time___', list[i].time);
174                     val = val.replace('___picture___', list[i].avatar);
175                     val = val.replace('___content___', list[i].content);
176                     val = '<li id="'+htmlid+'">'+val+'</li>';
177                     ret.ids.push(htmlid);
178                     html = (val+html);
179                 }
180                 ret.html = html;
181                 return ret;
182             },
183             load: function(page) {
184                 var scope = this;
185                 var container = Y.one('#comment-ctrl-'+this.client_id);
186                 var params = {
187                     'page': page
188                 }
189                 this.request({
190                     scope: scope,
191                     params: params,
192                     callback: function(id, ret, args) {
193                         var linktext = Y.one('#comment-link-text-'+scope.client_id);
194                         linktext.set('innerHTML', M.str.moodle.comments + ' ('+ret.count+')');
195                         var container = Y.one('#comment-list-'+scope.client_id);
196                         var pagination = Y.one('#comment-pagination-'+scope.client_id);
197                         if (ret.pagination) {
198                             pagination.set('innerHTML', ret.pagination);
199                         } else {
200                             //empty paging bar
201                             pagination.set('innerHTML', '');
202                         }
203                         var result = scope.render(ret.list);
204                         container.set('innerHTML', result.html);
205                         args.scope.register_pagination();
206                         args.scope.register_delete_buttons();
207                     }
208                 });
209             },
211             dodelete: function(id) { // note: delete is a reserved word in javascript, chrome and safary do not like it at all here!
212                 var scope = this;
213                 var params = {'commentid': id};
214                 scope.cancel_delete();
215                 function remove_dom(type, anmi, cmt) {
216                     cmt.remove();
217                 }
218                 this.request({
219                     action: 'delete',
220                     scope: scope,
221                     params: params,
222                     callback: function(id, resp, args) {
223                         var htmlid= 'comment-'+resp.commentid+'-'+resp.client_id;
224                         var attributes = {
225                             width:{to:0},
226                             height:{to:0}
227                         };
228                         var cmt = Y.one('#'+htmlid);
229                         cmt.setStyle('overflow', 'hidden');
230                         var anim = new YAHOO.util.Anim(htmlid, attributes, 1, YAHOO.util.Easing.easeOut);
231                         anim.onComplete.subscribe(remove_dom, cmt, this);
232                         anim.animate();
233                     }
234                 }, true);
235             },
236             register_actions: function() {
237                 // add new comment
238                 Y.one('#comment-action-post-'+this.client_id).on('click', function(e) {
239                     e.preventDefault();
240                     this.post();
241                     return false;
242                 }, this);
243                 // cancel comment box
244                 var cancel = Y.one('#comment-action-cancel-'+this.client_id);
245                 if (cancel) {
246                     cancel.on('click', function(e) {
247                         e.preventDefault();
248                         this.view(0);
249                         return false;
250                     }, this);
251                 }
252             },
253             register_delete_buttons: function() {
254                 var scope = this;
255                 // page buttons
256                 Y.all('div.comment-content a').each(
257                     function(node, id) {
258                         var theid = node.get('id');
259                         var parseid = new RegExp("comment-delete-"+scope.client_id+"-(\\d+)", "i");
260                         var commentid = theid.match(parseid);
261                         if (commentid[1]) {
262                             Y.Event.purgeElement('#'+theid, false, 'click');
263                         }
264                         node.on('click', function(e, node) {
265                                                         e.preventDefault();
266                             var width = CommentHelper.confirmoverlay.bodyNode.getStyle('width');
267                             var re = new RegExp("(\\d+).*", "i");
268                             var result = width.match(re);
269                             if (result[1]) {
270                                 width = Number(result[1]);
271                             } else {
272                                 width = 0;
273                             }
274                             CommentHelper.confirmoverlay.set('xy', [e.pageX-(width/2), e.pageY+10]);
275                             CommentHelper.confirmoverlay.set('visible', true);
276                                                         // XXX: YUI3 bug, a temp workaround in firefox, still have problem on webkit
277                                                         CommentHelper.confirmoverlay.bodyNode.setStyle('visibility', 'visible');
278                             Y.one('#canceldelete-'+scope.client_id).on('click', function(e) {
279                                                                 e.preventDefault();
280                                 scope.cancel_delete();
281                                 });
282                             Y.Event.purgeElement('#confirmdelete-'+scope.client_id, false, 'click');
283                             Y.one('#confirmdelete-'+scope.client_id).on('click', function(e) {
284                                                                         e.preventDefault();
285                                     if (commentid[1]) {
286                                         scope.dodelete(commentid[1]);
287                                     }
288                                 });
289                         }, scope, node);
290                     }
291                 );
292             },
293             cancel_delete: function() {
294                 CommentHelper.confirmoverlay.set('visible', false);
295                                 // XXX: YUI3 bug, a temp workaround in firefox, still have problem on webkit
296                                 CommentHelper.confirmoverlay.bodyNode.setStyle('visibility', 'hidden');
297             },
298             register_pagination: function() {
299                 var scope = this;
300                 // page buttons
301                 Y.all('#comment-pagination-'+this.client_id+' a').each(
302                     function(node, id) {
303                         node.on('click', function(e, node) {
304                                                         e.preventDefault();
305                             var id = node.get('id');
306                             var re = new RegExp("comment-page-"+this.client_id+"-(\\d+)", "i");
307                             var result = id.match(re);
308                             this.load(result[1]);
309                         }, scope, node);
310                     }
311                 );
312             },
313             view: function(page) {
314                 var container = Y.one('#comment-ctrl-'+this.client_id);
315                 var ta = Y.one('#dlg-content-'+this.client_id);
316                 var img = Y.one('#comment-img-'+this.client_id);
317                 var d = container.getStyle('display');
318                 if (d=='none'||d=='') {
319                     // show
320                     if (this.env != 'block_comments') {
321                         this.load(page);
322                     } else {
323                         this.register_delete_buttons();
324                         this.register_pagination();
325                     }
326                     container.setStyle('display', 'block');
327                     img.src=M.util.image_url('t/expanded', 'core');
328                 } else {
329                     // hide
330                     container.setStyle('display', 'none');
331                     img.src=M.util.image_url('t/collapsed', 'core');
332                     ta.set('value','');
333                 }
334                 //toggle_textarea.apply(ta, [false]);
335                 //// reset textarea size
336                 ta.on('click', function() {
337                     this.toggle_textarea(true);
338                 }, this)
339                 //ta.onkeypress = function() {
340                     //if (this.scrollHeight > this.clientHeight && !window.opera)
341                         //this.rows += 1;
342                 //}
343                 ta.on('blur', function() {
344                     this.toggle_textarea(false);
345                 }, this);
346                 this.register_actions();
347                 return false;
348             },
349             toggle_textarea: function(focus) {
350                 var t = Y.one('#dlg-content-'+this.client_id);
351                 if (focus) {
352                     if (t.get('value') == M.str.moodle.addcomment) {
353                         t.set('value', '');
354                         t.setStyle('color', 'black');
355                     }
356                 }else{
357                     if (t.get('value') == '') {
358                         t.set('value', M.str.moodle.addcomment);
359                         t.setStyle('color','grey');
360                         t.set('rows', 2);
361                     }
362                 }
363             },
364             wait: function() {
365                 var container = Y.one('#comment-list-'+this.client_id);
366                 container.set('innerHTML', '<div class="mdl-align"><img src="'+M.util.image_url('i/loading', 'core')+'" /></div>');
367             }
368         });
370         new CommentHelper(options);
371     },
372     init_admin: function(Y) {
373         var select_all = Y.one('#comment_select_all');
374         select_all.on('click', function(e) {
375             var comments = document.getElementsByName('comments');
376             var checked = false;
377             for (var i in comments) {
378                 if (comments[i].checked) {
379                     checked=true;
380                 }
381             }
382             for (i in comments) {
383                 comments[i].checked = !checked;
384             }
385             this.set('checked', !checked);
386         });
388         var comments_delete = Y.one('#comments_delete');
389         if (comments_delete) {
390             comments_delete.on('click', function(e) {
391                 e.preventDefault();
392                 var list = '';
393                 var comments = document.getElementsByName('comments');
394                 for (var i in comments) {
395                     if (typeof comments[i] == 'object' && comments[i].checked) {
396                         list += (comments[i].value + '-');
397                     }
398                 }
399                 if (!list) {
400                     return;
401                 }
402                 var args = {};
403                 args.message = M.str.admin.confirmdeletecomments;
404                 args.callback = function() {
405                     var url = M.cfg.wwwroot + '/comment/index.php';
407                     var data = {
408                         'commentids': list,
409                         'sesskey': M.cfg.sesskey,
410                         'action': 'delete'
411                     }
412                     var cfg = {
413                         method: 'POST',
414                         on: {
415                             complete: function(id,o,p) {
416                                 if (!o) {
417                                     alert('IO FATAL');
418                                     return;
419                                 }
420                                 if (o.responseText == 'yes') {
421                                     location.reload();
422                                 }
423                             }
424                         },
425                         arguments: {
426                             scope: this
427                         },
428                         headers: {
429                             'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
430                             'User-Agent': 'MoodleComment/3.0'
431                         },
432                         data: build_querystring(data)
433                     };
434                     Y.io(url, cfg);
435                 }
436                 M.util.show_confirm_dialog(e, args);
437             });
438         }
439     }
440 };