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                 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 Y.YUI2.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 Y.YUI2.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                     },
 162                     data: build_querystring(params)
 163                 };
 164                 if (args.form) {
 165                     cfg.form = args.form;
 166                 }
 167                 Y.io(this.api, cfg);
 168                 if (!noloading) {
 169                     this.wait();
 170                 }
 171             },
 172             render: function(list, newcmt) {
 173                 var ret = {};
 174                 ret.ids = [];
 175                 var template = Y.one('#cmt-tmpl');
 176                 var html = '';
 177                 for(var i in list) {
 178                     var htmlid = 'comment-'+list[i].id+'-'+this.client_id;
 179                     var val = template.get('innerHTML');
 180                     if (list[i].profileurl) {
 181                         val = val.replace('___name___', '<a href="'+list[i].profileurl+'">'+list[i].fullname+'</a>');
 182                     } else {
 183                         val = val.replace('___name___', list[i].fullname);
 184                     }
 185                     if (list[i]['delete']||newcmt) {
 186                         list[i].content = '<div class="comment-delete"><a href="#" id ="comment-delete-'+this.client_id+'-'+list[i].id+'" title="'+M.str.moodle.deletecomment+'"><img alt="" src="'+M.util.image_url('t/delete', 'core')+'" /></a></div>' + list[i].content;
 187                     }
 188                     val = val.replace('___time___', list[i].time);
 189                     val = val.replace('___picture___', list[i].avatar);
 190                     val = val.replace('___content___', list[i].content);
 191                     val = '<li id="'+htmlid+'">'+val+'</li>';
 192                     ret.ids.push(htmlid);
 193                     html = (val+html);
 194                 }
 195                 ret.html = html;
 196                 return ret;
 197             },
 198             load: function(page) {
 199                 var scope = this;
 200                 var container = Y.one('#comment-ctrl-'+this.client_id);
 201                 var params = {
 202                     'action': 'get',
 203                     'page': page
 204                 };
 205                 this.request({
 206                     scope: scope,
 207                     params: params,
 208                     callback: function(id, ret, args) {
 209                         var linktext = Y.one('#comment-link-text-'+scope.client_id);
 210                         if (ret.count && linktext) {
 211                             linktext.set('innerHTML', M.str.moodle.comments + ' ('+ret.count+')');
 212                         }
 213                         var container = Y.one('#comment-list-'+scope.client_id);
 214                         var pagination = Y.one('#comment-pagination-'+scope.client_id);
 215                         if (ret.pagination) {
 216                             pagination.set('innerHTML', ret.pagination);
 217                         } else {
 218                             //empty paging bar
 219                             pagination.set('innerHTML', '');
 220                         }
 221                         if (ret.error == 'require_login') {
 222                             var result = {};
 223                             result.html = M.str.moodle.commentsrequirelogin;
 224                         } else {
 225                             var result = scope.render(ret.list);
 226                         }
 227                         container.set('innerHTML', result.html);
 228                         var img = Y.one('#comment-img-'+scope.client_id);
 229                         if (img) {
 230                             img.set('src', M.util.image_url('t/expanded', 'core'));
 231                         }
 232                         args.scope.register_pagination();
 233                         args.scope.register_delete_buttons();
 234                     }
 235                 });
 236             },
 237
 238             dodelete: function(id) { // note: delete is a reserved word in javascript, chrome and safary do not like it at all here!
 239                 var scope = this;
 240                 var params = {'commentid': id};
 241                 scope.cancel_delete();
 242                 function remove_dom(type, anim, cmt) {
 243                     cmt.remove();
 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, node) {
 298                             e.preventDefault();
 299                             var width = CommentHelper.confirmoverlay.bodyNode.getStyle('width');
 300                             var re = new RegExp("(\\d+).*", "i");
 301                             var result = width.match(re);
 302                             if (result[1]) {
 303                                 width = Number(result[1]);
 304                             } else {
 305                                 width = 0;
 306                             }
 307                             //CommentHelper.confirmoverlay.set('xy', [e.pageX-(width/2), e.pageY]);
 308                             CommentHelper.confirmoverlay.set('xy', [e.pageX-width-5, e.pageY]);
 309                             CommentHelper.confirmoverlay.set('visible', true);
 310                             Y.one('#canceldelete-'+scope.client_id).on('click', function(e) {
 311                                 e.preventDefault();
 312                                 scope.cancel_delete();
 313                                 });
 314                             Y.Event.purgeElement('#confirmdelete-'+scope.client_id, false, 'click');
 315                             Y.one('#confirmdelete-'+scope.client_id).on('click', function(e) {
 316                                 e.preventDefault();
 317                                 if (commentid[1]) {
 318                                     scope.dodelete(commentid[1]);
 319                                 }
 320                             });
 321                         }, scope, node);
 322                     }
 323                 );
 324             },
 325             cancel_delete: function() {
 326                 CommentHelper.confirmoverlay.set('visible', false);
 327             },
 328             register_pagination: function() {
 329                 var scope = this;
 330                 // page buttons
 331                 Y.all('#comment-pagination-'+this.client_id+' a').each(
 332                     function(node, id) {
 333                         node.on('click', function(e, node) {
 334                             e.preventDefault();
 335                             var id = node.get('id');
 336                             var re = new RegExp("comment-page-"+this.client_id+"-(\\d+)", "i");
 337                             var result = id.match(re);
 338                             this.load(result[1]);
 339                         }, scope, node);
 340                     }
 341                 );
 342             },
 343             view: function(page) {
 344                 var container = Y.one('#comment-ctrl-'+this.client_id);
 345                 var ta = Y.one('#dlg-content-'+this.client_id);
 346                 var img = Y.one('#comment-img-'+this.client_id);
 347                 var d = container.getStyle('display');
 348                 if (d=='none'||d=='') {
 349                     // show
 350                     if (!this.autostart) {
 351                         this.load(page);
 352                     } else {
 353                         this.register_delete_buttons();
 354                         this.register_pagination();
 355                     }
 356                     container.setStyle('display', 'block');
 357                     if (img) {
 358                         img.set('src', M.util.image_url('t/expanded', 'core'));
 359                     }
 360                 } else {
 361                     // hide
 362                     container.setStyle('display', 'none');
 363                     var collapsedimage = 't/collapsed'; // ltr mode
 364                     if ( Y.one(document.body).hasClass('dir-rtl') ) {
 365                         collapsedimage = 't/collapsed_rtl';
 366                     } else {
 367                         collapsedimage = 't/collapsed';
 368                     }
 369                     img.set('src', M.util.image_url(collapsedimage, 'core'));
 370                     if (ta) {
 371                         ta.set('value','');
 372                     }
 373                 }
 374                 if (ta) {
 375                     //toggle_textarea.apply(ta, [false]);
 376                     //// reset textarea size
 377                     ta.on('click', function() {
 378                         this.toggle_textarea(true);
 379                     }, this);
 380                     //ta.onkeypress = function() {
 381                         //if (this.scrollHeight > this.clientHeight && !window.opera)
 382                             //this.rows += 1;
 383                     //}
 384                     ta.on('blur', function() {
 385                         this.toggle_textarea(false);
 386                     }, this);
 387                 }
 388                 this.register_actions();
 389                 return false;
 390             },
 391             toggle_textarea: function(focus) {
 392                 var t = Y.one('#dlg-content-'+this.client_id);
 393                 if (!t) {
 394                     return false;
 395                 }
 396                 if (focus) {
 397                     if (t.get('value') == M.str.moodle.addcomment) {
 398                         t.set('value', '');
 399                         t.setStyle('color', 'black');
 400                     }
 401                 }else{
 402                     if (t.get('value') == '') {
 403                         t.set('value', M.str.moodle.addcomment);
 404                         t.setStyle('color','grey');
 405                         t.set('rows', 2);
 406                     }
 407                 }
 408             },
 409             wait: function() {
 410                 var container = Y.one('#comment-list-'+this.client_id);
 411                 container.set('innerHTML', '<div class="mdl-align"><img src="'+M.util.image_url('i/loading_small', 'core')+'" /></div>');
 412             }
 413         });
 414
 415         new CommentHelper(options);
 416     },
 417     init_admin: function(Y) {
 418         var select_all = Y.one('#comment_select_all');
 419         select_all.on('click', function(e) {
 420             var comments = document.getElementsByName('comments');
 421             var checked = false;
 422             for (var i in comments) {
 423                 if (comments[i].checked) {
 424                     checked=true;
 425                 }
 426             }
 427             for (i in comments) {
 428                 comments[i].checked = !checked;
 429             }
 430             this.set('checked', !checked);
 431         });
 432
 433         var comments_delete = Y.one('#comments_delete');
 434         if (comments_delete) {
 435             comments_delete.on('click', function(e) {
 436                 e.preventDefault();
 437                 var list = '';
 438                 var comments = document.getElementsByName('comments');
 439                 for (var i in comments) {
 440                     if (typeof comments[i] == 'object' && comments[i].checked) {
 441                         list += (comments[i].value + '-');
 442                     }
 443                 }
 444                 if (!list) {
 445                     return;
 446                 }
 447                 var args = {};
 448                 args.message = M.str.admin.confirmdeletecomments;
 449                 args.callback = function() {
 450                     var url = M.cfg.wwwroot + '/comment/index.php';
 451
 452                     var data = {
 453                         'commentids': list,
 454                         'sesskey': M.cfg.sesskey,
 455                         'action': 'delete'
 456                     };
 457                     var cfg = {
 458                         method: 'POST',
 459                         on: {
 460                             complete: function(id,o,p) {
 461                                 if (!o) {
 462                                     alert('IO FATAL');
 463                                     return;
 464                                 }
 465                                 if (o.responseText == 'yes') {
 466                                     location.reload();
 467                                 }
 468                             }
 469                         },
 470                         arguments: {
 471                             scope: this
 472                         },
 473                         headers: {
 474                             'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
 475                         },
 476                         data: build_querystring(data)
 477                     };
 478                     Y.io(url, cfg);
 479                 };
 480                 M.util.show_confirm_dialog(e, args);
 481             });
 482         }
 483     }
 484 };