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.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                 var handle = Y.one('#comment-link-'+this.client_id);
  53                 if (handle) {
  54                     handle.on('click', function(e) {
  55                         e.preventDefault();
  56                         this.view(0);
  57                         return false;
  58                     }, this);
  59                 }
  60                 CommentHelper.confirmoverlay = new Y.Overlay({
  61 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>',
  62                                         visible: false
  63                                         });
  64                 CommentHelper.confirmoverlay.render(document.body);
  65             },
  66             post: function() {
  67                 var ta = Y.one('#dlg-content-'+this.client_id);
  68                 var scope = this;
  69                 var value = ta.get('value');
  70                 if (value && value != M.str.moodle.addcomment) {
  71                     var params = {'content': value};
  72                     this.request({
  73                         action: 'add',
  74                         scope: scope,
  75                         params: params,
  76                         callback: function(id, obj, args) {
  77                             var scope = args.scope;
  78                             var cid = scope.client_id;
  79                             var ta = Y.one('#dlg-content-'+cid);
  80                             ta.set('value', '');
  81                             var container = Y.one('#comment-list-'+cid);
  82                             var result = scope.render([obj], true);
  83                             var newcomment = Y.Node.create(result.html);
  84                             container.appendChild(newcomment);
  85                             var ids = result.ids;
  86                             var linktext = Y.one('#comment-link-text-'+cid);
  87                             linktext.set('innerHTML', M.str.moodle.comments + ' ('+obj.count+')');
  88                             for(var i in ids) {
  89                                 var attributes = {
  90                                     color: { to: '#06e' },
  91                                     backgroundColor: { to: '#FFE390' }
  92                                 };
  93                                 var anim = new YAHOO.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 YAHOO.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                 params['env']       = '';
 116                 // the form element only accept certain file types
 117                 params['sesskey']   = M.cfg.sesskey;
 118                 params['action']    = args.action?args.action:'';
 119                 params['client_id'] = this.client_id;
 120                 params['itemid']    = this.itemid;
 121                 params['area']      = this.commentarea;
 122                 params['courseid']  = this.courseid;
 123                 params['contextid'] = this.contextid;
 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                                 alert(data.error);
 140                                 return false;
 141                             } else {
 142                                 args.callback(id,data,p);
 143                                 return true;
 144                             }
 145                         }
 146                     },
 147                     arguments: {
 148                         scope: scope
 149                     },
 150                     headers: {
 151                         'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
 152                         'User-Agent': 'MoodleComment/3.0'
 153                     },
 154                     data: build_querystring(params)
 155                 };
 156                 if (args.form) {
 157                     cfg.form = args.form;
 158                 }
 159                 Y.io(this.api, cfg);
 160                 if (!noloading) {
 161                     this.wait();
 162                 }
 163             },
 164             render: function(list, newcmt) {
 165                 var ret = {};
 166                 ret.ids = [];
 167                 var template = Y.one('#cmt-tmpl');
 168                 var html = '';
 169                 for(var i in list) {
 170                     var htmlid = 'comment-'+list[i].id+'-'+this.client_id;
 171                     var val = template.get('innerHTML');
 172                     if (list[i].profileurl) {
 173                         val = val.replace('___name___', '<a href="'+list[i].profileurl+'">'+list[i].fullname+'</a>');
 174                     } else {
 175                         val = val.replace('___name___', list[i].fullname);
 176                     }
 177                     if (list[i]['delete']||newcmt) {
 178                         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;
 179                     }
 180                     val = val.replace('___time___', list[i].time);
 181                     val = val.replace('___picture___', list[i].avatar);
 182                     val = val.replace('___content___', list[i].content);
 183                     val = '<li id="'+htmlid+'">'+val+'</li>';
 184                     ret.ids.push(htmlid);
 185                     html = (val+html);
 186                 }
 187                 ret.html = html;
 188                 return ret;
 189             },
 190             load: function(page) {
 191                 var scope = this;
 192                 var container = Y.one('#comment-ctrl-'+this.client_id);
 193                 var params = {
 194                     'page': page
 195                 }
 196                 this.request({
 197                     scope: scope,
 198                     params: params,
 199                     callback: function(id, ret, args) {
 200                         var linktext = Y.one('#comment-link-text-'+scope.client_id);
 201                         linktext.set('innerHTML', M.str.moodle.comments + ' ('+ret.count+')');
 202                         var container = Y.one('#comment-list-'+scope.client_id);
 203                         var pagination = Y.one('#comment-pagination-'+scope.client_id);
 204                         if (ret.pagination) {
 205                             pagination.set('innerHTML', ret.pagination);
 206                         } else {
 207                             //empty paging bar
 208                             pagination.set('innerHTML', '');
 209                         }
 210                         var result = scope.render(ret.list);
 211                         container.set('innerHTML', result.html);
 212                         args.scope.register_pagination();
 213                         args.scope.register_delete_buttons();
 214                     }
 215                 });
 216             },
 217
 218             dodelete: function(id) { // note: delete is a reserved word in javascript, chrome and safary do not like it at all here!
 219                 var scope = this;
 220                 var params = {'commentid': id};
 221                 scope.cancel_delete();
 222                 function remove_dom(type, anim, cmt) {
 223                     cmt.remove();
 224                 }
 225                 this.request({
 226                     action: 'delete',
 227                     scope: scope,
 228                     params: params,
 229                     callback: function(id, resp, args) {
 230                         var htmlid= 'comment-'+resp.commentid+'-'+resp.client_id;
 231                         var attributes = {
 232                             width:{to:0},
 233                             height:{to:0}
 234                         };
 235                         var cmt = Y.one('#'+htmlid);
 236                         cmt.setStyle('overflow', 'hidden');
 237                         var anim = new YAHOO.util.Anim(htmlid, attributes, 1, YAHOO.util.Easing.easeOut);
 238                         anim.onComplete.subscribe(remove_dom, cmt, this);
 239                         anim.animate();
 240                     }
 241                 }, true);
 242             },
 243             register_actions: function() {
 244                 // add new comment
 245                 var action_btn = Y.one('#comment-action-post-'+this.client_id);
 246                 if (action_btn) {
 247                     action_btn.on('click', function(e) {
 248                         e.preventDefault();
 249                         this.post();
 250                         return false;
 251                     }, this);
 252                 }
 253                 // cancel comment box
 254                 var cancel = Y.one('#comment-action-cancel-'+this.client_id);
 255                 if (cancel) {
 256                     cancel.on('click', function(e) {
 257                         e.preventDefault();
 258                         this.view(0);
 259                         return false;
 260                     }, this);
 261                 }
 262             },
 263             register_delete_buttons: function() {
 264                 var scope = this;
 265                 // page buttons
 266                 Y.all('div.comment-delete a').each(
 267                     function(node, id) {
 268                         var theid = node.get('id');
 269                         var parseid = new RegExp("comment-delete-"+scope.client_id+"-(\\d+)", "i");
 270                         var commentid = theid.match(parseid);
 271                         if (!commentid) {
 272                             return;
 273                         }
 274                         if (commentid[1]) {
 275                             Y.Event.purgeElement('#'+theid, false, 'click');
 276                         }
 277                         node.on('click', function(e, node) {
 278                             e.preventDefault();
 279                             var width = CommentHelper.confirmoverlay.bodyNode.getStyle('width');
 280                             var re = new RegExp("(\\d+).*", "i");
 281                             var result = width.match(re);
 282                             if (result[1]) {
 283                                 width = Number(result[1]);
 284                             } else {
 285                                 width = 0;
 286                             }
 287                             //CommentHelper.confirmoverlay.set('xy', [e.pageX-(width/2), e.pageY]);
 288                             CommentHelper.confirmoverlay.set('xy', [e.pageX-width-5, e.pageY]);
 289                             CommentHelper.confirmoverlay.set('visible', true);
 290                             Y.one('#canceldelete-'+scope.client_id).on('click', function(e) {
 291                                                                 e.preventDefault();
 292                                 scope.cancel_delete();
 293                                 });
 294                             Y.Event.purgeElement('#confirmdelete-'+scope.client_id, false, 'click');
 295                             Y.one('#confirmdelete-'+scope.client_id).on('click', function(e) {
 296                                                                         e.preventDefault();
 297                                     if (commentid[1]) {
 298                                         scope.dodelete(commentid[1]);
 299                                     }
 300                                 });
 301                         }, scope, node);
 302                     }
 303                 );
 304             },
 305             cancel_delete: function() {
 306                 CommentHelper.confirmoverlay.set('visible', false);
 307             },
 308             register_pagination: function() {
 309                 var scope = this;
 310                 // page buttons
 311                 Y.all('#comment-pagination-'+this.client_id+' a').each(
 312                     function(node, id) {
 313                         node.on('click', function(e, node) {
 314                                                         e.preventDefault();
 315                             var id = node.get('id');
 316                             var re = new RegExp("comment-page-"+this.client_id+"-(\\d+)", "i");
 317                             var result = id.match(re);
 318                             this.load(result[1]);
 319                         }, scope, node);
 320                     }
 321                 );
 322             },
 323             view: function(page) {
 324                 var container = Y.one('#comment-ctrl-'+this.client_id);
 325                 var ta = Y.one('#dlg-content-'+this.client_id);
 326                 var img = Y.one('#comment-img-'+this.client_id);
 327                 var d = container.getStyle('display');
 328                 if (d=='none'||d=='') {
 329                     // show
 330                     if (this.env != 'block_comments') {
 331                         this.load(page);
 332                     } else {
 333                         this.register_delete_buttons();
 334                         this.register_pagination();
 335                     }
 336                     container.setStyle('display', 'block');
 337                     img.src=M.util.image_url('t/expanded', 'core');
 338                 } else {
 339                     // hide
 340                     container.setStyle('display', 'none');
 341                     img.src=M.util.image_url('t/collapsed', 'core');
 342                     if (ta) {
 343                         ta.set('value','');
 344                     }
 345                 }
 346                 if (ta) {
 347                     //toggle_textarea.apply(ta, [false]);
 348                     //// reset textarea size
 349                     ta.on('click', function() {
 350                         this.toggle_textarea(true);
 351                     }, this)
 352                     //ta.onkeypress = function() {
 353                         //if (this.scrollHeight > this.clientHeight && !window.opera)
 354                             //this.rows += 1;
 355                     //}
 356                     ta.on('blur', function() {
 357                         this.toggle_textarea(false);
 358                     }, this);
 359                 }
 360                 this.register_actions();
 361                 return false;
 362             },
 363             toggle_textarea: function(focus) {
 364                 var t = Y.one('#dlg-content-'+this.client_id);
 365                 if (focus) {
 366                     if (t.get('value') == M.str.moodle.addcomment) {
 367                         t.set('value', '');
 368                         t.setStyle('color', 'black');
 369                     }
 370                 }else{
 371                     if (t.get('value') == '') {
 372                         t.set('value', M.str.moodle.addcomment);
 373                         t.setStyle('color','grey');
 374                         t.set('rows', 2);
 375                     }
 376                 }
 377             },
 378             wait: function() {
 379                 var container = Y.one('#comment-list-'+this.client_id);
 380                 container.set('innerHTML', '<div class="mdl-align"><img src="'+M.util.image_url('i/loading', 'core')+'" /></div>');
 381             }
 382         });
 383
 384         new CommentHelper(options);
 385     },
 386     init_admin: function(Y) {
 387         var select_all = Y.one('#comment_select_all');
 388         select_all.on('click', function(e) {
 389             var comments = document.getElementsByName('comments');
 390             var checked = false;
 391             for (var i in comments) {
 392                 if (comments[i].checked) {
 393                     checked=true;
 394                 }
 395             }
 396             for (i in comments) {
 397                 comments[i].checked = !checked;
 398             }
 399             this.set('checked', !checked);
 400         });
 401
 402         var comments_delete = Y.one('#comments_delete');
 403         if (comments_delete) {
 404             comments_delete.on('click', function(e) {
 405                 e.preventDefault();
 406                 var list = '';
 407                 var comments = document.getElementsByName('comments');
 408                 for (var i in comments) {
 409                     if (typeof comments[i] == 'object' && comments[i].checked) {
 410                         list += (comments[i].value + '-');
 411                     }
 412                 }
 413                 if (!list) {
 414                     return;
 415                 }
 416                 var args = {};
 417                 args.message = M.str.admin.confirmdeletecomments;
 418                 args.callback = function() {
 419                     var url = M.cfg.wwwroot + '/comment/index.php';
 420
 421                     var data = {
 422                         'commentids': list,
 423                         'sesskey': M.cfg.sesskey,
 424                         'action': 'delete'
 425                     }
 426                     var cfg = {
 427                         method: 'POST',
 428                         on: {
 429                             complete: function(id,o,p) {
 430                                 if (!o) {
 431                                     alert('IO FATAL');
 432                                     return;
 433                                 }
 434                                 if (o.responseText == 'yes') {
 435                                     location.reload();
 436                                 }
 437                             }
 438                         },
 439                         arguments: {
 440                             scope: this
 441                         },
 442                         headers: {
 443                             'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
 444                             'User-Agent': 'MoodleComment/3.0'
 445                         },
 446                         data: build_querystring(data)
 447                     };
 448                     Y.io(url, cfg);
 449                 }
 450                 M.util.show_confirm_dialog(e, args);
 451             });
 452         }
 453     }
 454 };