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 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             },
 238
 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         });
 406
 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         });
 424
 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';
 443
 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 };