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/>.
  15
  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             },
  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.util.get_string('addcomment', 'moodle')) {
  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                             scope.toggle_textarea(false);
  79                             var container = Y.one('#comment-list-'+cid);
  80                             var result = scope.render([obj], true);
  81                             var newcomment = Y.Node.create(result.html);
  82                             container.appendChild(newcomment);
  83                             var ids = result.ids;
  84                             var linkText = Y.one('#comment-link-text-' + cid);
  85                             if (linkText) {
  86                                 linkText.set('innerHTML', M.util.get_string('commentscount', 'moodle', obj.count));
  87                             }
  88                             for(var i in ids) {
  89                                 var attributes = {
  90                                     color: { to: '#06e' },
  91                                     backgroundColor: { to: '#FFE390' }
  92                                 };
  93                                 var anim = new Y.YUI2.util.ColorAnim(ids[i], attributes);
  94                                 anim.animate();
  95                             }
  96                             scope.register_pagination();
  97                             scope.register_delete_buttons();
  98                         }
  99                     }, true);
 100                 } else {
 101                     var attributes = {
 102                         backgroundColor: { from: '#FFE390', to:'#FFFFFF' }
 103                     };
 104                     var anim = new Y.YUI2.util.ColorAnim('dlg-content-'+cid, attributes);
 105                     anim.animate();
 106                 }
 107             },
 108             request: function(args, noloading) {
 109                 var params = {};
 110                 var scope = this;
 111                 if (args['scope']) {
 112                     scope = args['scope'];
 113                 }
 114                 //params['page'] = args.page?args.page:'';
 115                 // the form element only accept certain file types
 116                 params['sesskey']   = M.cfg.sesskey;
 117                 params['action']    = args.action?args.action:'';
 118                 params['client_id'] = this.client_id;
 119                 params['itemid']    = this.itemid;
 120                 params['area']      = this.commentarea;
 121                 params['courseid']  = this.courseid;
 122                 params['contextid'] = this.contextid;
 123                 params['component'] = this.component;
 124                 if (args['params']) {
 125                     for (i in args['params']) {
 126                         params[i] = args['params'][i];
 127                     }
 128                 }
 129                 var cfg = {
 130                     method: 'POST',
 131                     on: {
 132                         complete: function(id,o,p) {
 133                             if (!o) {
 134                                 alert('IO FATAL');
 135                                 return false;
 136                             }
 137                             var data = Y.JSON.parse(o.responseText);
 138                             if (data.error) {
 139                                 if (data.error == 'require_login') {
 140                                     args.callback(id,data,p);
 141                                     return true;
 142                                 }
 143                                 alert(data.error);
 144                                 return false;
 145                             } else {
 146                                 args.callback(id,data,p);
 147                                 return true;
 148                             }
 149                         }
 150                     },
 151                     arguments: {
 152                         scope: scope
 153                     },
 154                     headers: {
 155                         'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
 156                     },
 157                     data: build_querystring(params)
 158                 };
 159                 if (args.form) {
 160                     cfg.form = args.form;
 161                 }
 162                 Y.io(this.api, cfg);
 163                 if (!noloading) {
 164                     this.wait();
 165                 }
 166             },
 167             render: function(list, newcmt) {
 168                 var ret = {};
 169                 ret.ids = [];
 170                 var template = Y.one('#cmt-tmpl');
 171                 var html = '';
 172                 for(var i in list) {
 173                     var htmlid = 'comment-'+list[i].id+'-'+this.client_id;
 174                     var val = template.get('innerHTML');
 175                     if (list[i].profileurl) {
 176                         val = val.replace('___name___', '<a href="'+list[i].profileurl+'">'+list[i].fullname+'</a>');
 177                     } else {
 178                         val = val.replace('___name___', list[i].fullname);
 179                     }
 180                     if (list[i]['delete']||newcmt) {
 181                         list[i].content = '<div class="comment-delete"><a href="#" id ="comment-delete-'+this.client_id+'-'+list[i].id+'" title="'+M.util.get_string('deletecomment', 'moodle')+'"><img alt="" src="'+M.util.image_url('t/delete', 'core')+'" /></a></div>' + list[i].content;
 182                     }
 183                     val = val.replace('___time___', list[i].time);
 184                     val = val.replace('___picture___', list[i].avatar);
 185                     val = val.replace('___content___', list[i].content);
 186                     val = '<li id="'+htmlid+'">'+val+'</li>';
 187                     ret.ids.push(htmlid);
 188                     html = (val+html);
 189                 }
 190                 ret.html = html;
 191                 return ret;
 192             },
 193             load: function(page) {
 194                 var scope = this;
 195                 var container = Y.one('#comment-ctrl-'+this.client_id);
 196                 var params = {
 197                     'action': 'get',
 198                     'page': page
 199                 };
 200                 this.request({
 201                     scope: scope,
 202                     params: params,
 203                     callback: function(id, ret, args) {
 204                         var linkText = Y.one('#comment-link-text-' + scope.client_id);
 205                         if (ret.count && linkText) {
 206                             linkText.set('innerHTML', M.util.get_string('commentscount', 'moodle', ret.count));
 207                         }
 208                         var container = Y.one('#comment-list-'+scope.client_id);
 209                         var pagination = Y.one('#comment-pagination-'+scope.client_id);
 210                         if (ret.pagination) {
 211                             pagination.set('innerHTML', ret.pagination);
 212                         } else {
 213                             //empty paging bar
 214                             pagination.set('innerHTML', '');
 215                         }
 216                         if (ret.error == 'require_login') {
 217                             var result = {};
 218                             result.html = M.util.get_string('commentsrequirelogin', 'moodle');
 219                         } else {
 220                             var result = scope.render(ret.list);
 221                         }
 222                         container.set('innerHTML', result.html);
 223                         var img = Y.one('#comment-img-'+scope.client_id);
 224                         if (img) {
 225                             img.set('src', M.util.image_url('t/expanded', 'core'));
 226                         }
 227                         args.scope.register_pagination();
 228                         args.scope.register_delete_buttons();
 229                     }
 230                 });
 231             },
 232
 233             dodelete: function(id) { // note: delete is a reserved word in javascript, chrome and safary do not like it at all here!
 234                 var scope = this,
 235                     cid = scope.client_id,
 236                     params = {'commentid': id};
 237                 function remove_dom(type, anim, cmt) {
 238                     cmt.remove();
 239                     var linkText = Y.one('#comment-link-text-' + cid),
 240                         comments = Y.all('#comment-list-' + cid + ' li');
 241                     if (linkText && comments) {
 242                         linkText.set('innerHTML', M.util.get_string('commentscount', 'moodle', comments.size()));
 243                     }
 244                 }
 245                 this.request({
 246                     action: 'delete',
 247                     scope: scope,
 248                     params: params,
 249                     callback: function(id, resp, args) {
 250                         var htmlid= 'comment-'+resp.commentid+'-'+resp.client_id;
 251                         var attributes = {
 252                             width:{to:0},
 253                             height:{to:0}
 254                         };
 255                         var cmt = Y.one('#'+htmlid);
 256                         cmt.setStyle('overflow', 'hidden');
 257                         var anim = new Y.YUI2.util.Anim(htmlid, attributes, 1, Y.YUI2.util.Easing.easeOut);
 258                         anim.onComplete.subscribe(remove_dom, cmt, this);
 259                         anim.animate();
 260                     }
 261                 }, true);
 262             },
 263             register_actions: function() {
 264                 // add new comment
 265                 var action_btn = Y.one('#comment-action-post-'+this.client_id);
 266                 if (action_btn) {
 267                     action_btn.on('click', function(e) {
 268                         e.preventDefault();
 269                         this.post();
 270                         return false;
 271                     }, this);
 272                 }
 273                 // cancel comment box
 274                 var cancel = Y.one('#comment-action-cancel-'+this.client_id);
 275                 if (cancel) {
 276                     cancel.on('click', function(e) {
 277                         e.preventDefault();
 278                         this.view(0);
 279                         return false;
 280                     }, this);
 281                 }
 282             },
 283             register_delete_buttons: function() {
 284                 var scope = this;
 285                 // page buttons
 286                 Y.all('div.comment-delete a').each(
 287                     function(node, id) {
 288                         var theid = node.get('id');
 289                         var parseid = new RegExp("comment-delete-"+scope.client_id+"-(\\d+)", "i");
 290                         var commentid = theid.match(parseid);
 291                         if (!commentid) {
 292                             return;
 293                         }
 294                         if (commentid[1]) {
 295                             Y.Event.purgeElement('#'+theid, false, 'click');
 296                         }
 297                         node.on('click', function(e) {
 298                             e.preventDefault();
 299                             if (commentid[1]) {
 300                                 scope.dodelete(commentid[1]);
 301                             }
 302                         });
 303                         // Also handle space/enter key.
 304                         node.on('key', function(e) {
 305                             e.preventDefault();
 306                             if (commentid[1]) {
 307                                 scope.dodelete(commentid[1]);
 308                             }
 309                         }, '13,32');
 310                         // 13 and 32 are the keycodes for space and enter.
 311                     }
 312                 );
 313             },
 314             register_pagination: function() {
 315                 var scope = this;
 316                 // page buttons
 317                 Y.all('#comment-pagination-'+this.client_id+' a').each(
 318                     function(node, id) {
 319                         node.on('click', function(e, node) {
 320                             e.preventDefault();
 321                             var id = node.get('id');
 322                             var re = new RegExp("comment-page-"+this.client_id+"-(\\d+)", "i");
 323                             var result = id.match(re);
 324                             this.load(result[1]);
 325                         }, scope, node);
 326                     }
 327                 );
 328             },
 329             view: function(page) {
 330                 var container = Y.one('#comment-ctrl-'+this.client_id);
 331                 var ta = Y.one('#dlg-content-'+this.client_id);
 332                 var img = Y.one('#comment-img-'+this.client_id);
 333                 var d = container.getStyle('display');
 334                 if (d=='none'||d=='') {
 335                     // show
 336                     if (!this.autostart) {
 337                         this.load(page);
 338                     } else {
 339                         this.register_delete_buttons();
 340                         this.register_pagination();
 341                     }
 342                     container.setStyle('display', 'block');
 343                     if (img) {
 344                         img.set('src', M.util.image_url('t/expanded', 'core'));
 345                     }
 346                 } else {
 347                     // hide
 348                     container.setStyle('display', 'none');
 349                     var collapsedimage = 't/collapsed'; // ltr mode
 350                     if ( Y.one(document.body).hasClass('dir-rtl') ) {
 351                         collapsedimage = 't/collapsed_rtl';
 352                     } else {
 353                         collapsedimage = 't/collapsed';
 354                     }
 355                     img.set('src', M.util.image_url(collapsedimage, 'core'));
 356                     if (ta) {
 357                         ta.set('value','');
 358                     }
 359                 }
 360                 if (ta) {
 361                     //toggle_textarea.apply(ta, [false]);
 362                     //// reset textarea size
 363                     ta.on('focus', function() {
 364                         this.toggle_textarea(true);
 365                     }, this);
 366                     //ta.onkeypress = function() {
 367                         //if (this.scrollHeight > this.clientHeight && !window.opera)
 368                             //this.rows += 1;
 369                     //}
 370                     ta.on('blur', function() {
 371                         this.toggle_textarea(false);
 372                     }, this);
 373                 }
 374                 this.register_actions();
 375                 return false;
 376             },
 377             toggle_textarea: function(focus) {
 378                 var t = Y.one('#dlg-content-'+this.client_id);
 379                 if (!t) {
 380                     return false;
 381                 }
 382                 if (focus) {
 383                     if (t.get('value') == M.util.get_string('addcomment', 'moodle')) {
 384                         t.set('value', '');
 385                         t.setStyle('color', 'black');
 386                     }
 387                 }else{
 388                     if (t.get('value') == '') {
 389                         t.set('value', M.util.get_string('addcomment', 'moodle'));
 390                         t.setStyle('color','grey');
 391                         t.set('rows', 2);
 392                     }
 393                 }
 394             },
 395             wait: function() {
 396                 var container = Y.one('#comment-list-'+this.client_id);
 397                 container.set('innerHTML', '<div class="mdl-align"><img src="'+M.util.image_url('i/loading_small', 'core')+'" /></div>');
 398             }
 399         });
 400
 401         new CommentHelper(options);
 402     },
 403     init_admin: function(Y) {
 404         var select_all = Y.one('#comment_select_all');
 405         select_all.on('click', function(e) {
 406             var comments = document.getElementsByName('comments');
 407             var checked = false;
 408             for (var i in comments) {
 409                 if (comments[i].checked) {
 410                     checked=true;
 411                 }
 412             }
 413             for (i in comments) {
 414                 comments[i].checked = !checked;
 415             }
 416             this.set('checked', !checked);
 417         });
 418
 419         var comments_delete = Y.one('#comments_delete');
 420         if (comments_delete) {
 421             comments_delete.on('click', function(e) {
 422                 e.preventDefault();
 423                 var list = '';
 424                 var comments = document.getElementsByName('comments');
 425                 for (var i in comments) {
 426                     if (typeof comments[i] == 'object' && comments[i].checked) {
 427                         list += (comments[i].value + '-');
 428                     }
 429                 }
 430                 if (!list) {
 431                     return;
 432                 }
 433                 var args = {};
 434                 args.message = M.util.get_string('confirmdeletecomments', 'admin');
 435                 args.callback = function() {
 436                     var url = M.cfg.wwwroot + '/comment/index.php';
 437
 438                     var data = {
 439                         'commentids': list,
 440                         'sesskey': M.cfg.sesskey,
 441                         'action': 'delete'
 442                     };
 443                     var cfg = {
 444                         method: 'POST',
 445                         on: {
 446                             complete: function(id,o,p) {
 447                                 if (!o) {
 448                                     alert('IO FATAL');
 449                                     return;
 450                                 }
 451                                 if (o.responseText == 'yes') {
 452                                     location.reload();
 453                                 }
 454                             }
 455                         },
 456                         arguments: {
 457                             scope: this
 458                         },
 459                         headers: {
 460                             'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
 461                         },
 462                         data: build_querystring(data)
 463                     };
 464                     Y.io(url, cfg);
 465                 };
 466                 M.util.show_confirm_dialog(e, args);
 467             });
 468         }
 469     }
 470 };