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.env = args.env;
  44                 // expand comments?
  45                 if (args.autostart) {
  46                     this.view(args.page);
  47                 }
  48                 // hide toggle link
  49                 if (args.notoggle) {
  50                     Y.one('#comment-link-'+this.client_id).setStyle('display', 'none');
  51                 }
  52                 // load comments
  53                 var handle = Y.one('#comment-link-'+this.client_id);
  54                 if (handle) {
  55                     handle.on('click', function(e) {
  56                         e.preventDefault();
  57                         this.view(0);
  58                         return false;
  59                     }, this);
  60                 }
  61                 CommentHelper.confirmoverlay = new Y.Overlay({
  62 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>',
  63                                         visible: false
  64                                         });
  65                 CommentHelper.confirmoverlay.render(document.body);
  66             },
  67             post: function() {
  68                 var ta = Y.one('#dlg-content-'+this.client_id);
  69                 var scope = this;
  70                 var value = ta.get('value');
  71                 if (value && value != M.str.moodle.addcomment) {
  72                     var params = {'content': value};
  73                     this.request({
  74                         action: 'add',
  75                         scope: scope,
  76                         params: params,
  77                         callback: function(id, obj, args) {
  78                             var scope = args.scope;
  79                             var cid = scope.client_id;
  80                             var ta = Y.one('#dlg-content-'+cid);
  81                             ta.set('value', '');
  82                             var container = Y.one('#comment-list-'+cid);
  83                             var result = scope.render([obj], true);
  84                             var newcomment = Y.Node.create(result.html);
  85                             container.appendChild(newcomment);
  86                             var ids = result.ids;
  87                             var linktext = Y.one('#comment-link-text-'+cid);
  88                             linktext.set('innerHTML', M.str.moodle.comments + ' ('+obj.count+')');
  89                             for(var i in ids) {
  90                                 var attributes = {
  91                                     color: { to: '#06e' },
  92                                     backgroundColor: { to: '#FFE390' }
  93                                 };
  94                                 var anim = new YAHOO.util.ColorAnim(ids[i], attributes);
  95                                 anim.animate();
  96                             }
  97                             scope.register_pagination();
  98                             scope.register_delete_buttons();
  99                         }
 100                     }, true);
 101                 } else {
 102                     var attributes = {
 103                         backgroundColor: { from: '#FFE390', to:'#FFFFFF' }
 104                     };
 105                     var anim = new YAHOO.util.ColorAnim('dlg-content-'+cid, attributes);
 106                     anim.animate();
 107                 }
 108             },
 109             request: function(args, noloading) {
 110                 var params = {};
 111                 var scope = this;
 112                 if (args['scope']) {
 113                     scope = args['scope'];
 114                 }
 115                 //params['page'] = args.page?args.page:'';
 116                 params['env']       = '';
 117                 // the form element only accept certain file types
 118                 params['sesskey']   = M.cfg.sesskey;
 119                 params['action']    = args.action?args.action:'';
 120                 params['client_id'] = this.client_id;
 121                 params['itemid']    = this.itemid;
 122                 params['area']      = this.commentarea;
 123                 params['courseid']  = this.courseid;
 124                 params['contextid'] = this.contextid;
 125                 params['component'] = this.component;
 126                 if (args['params']) {
 127                     for (i in args['params']) {
 128                         params[i] = args['params'][i];
 129                     }
 130                 }
 131                 var cfg = {
 132                     method: 'POST',
 133                     on: {
 134                         complete: function(id,o,p) {
 135                             if (!o) {
 136                                 alert('IO FATAL');
 137                                 return false;
 138                             }
 139                             var data = Y.JSON.parse(o.responseText);
 140                             if (data.error) {
 141                                 alert(data.error);
 142                                 return false;
 143                             } else {
 144                                 args.callback(id,data,p);
 145                                 return true;
 146                             }
 147                         }
 148                     },
 149                     arguments: {
 150                         scope: scope
 151                     },
 152                     headers: {
 153                         'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
 154                         'User-Agent': 'MoodleComment/3.0'
 155                     },
 156                     data: build_querystring(params)
 157                 };
 158                 if (args.form) {
 159                     cfg.form = args.form;
 160                 }
 161                 Y.io(this.api, cfg);
 162                 if (!noloading) {
 163                     this.wait();
 164                 }
 165             },
 166             render: function(list, newcmt) {
 167                 var ret = {};
 168                 ret.ids = [];
 169                 var template = Y.one('#cmt-tmpl');
 170                 var html = '';
 171                 for(var i in list) {
 172                     var htmlid = 'comment-'+list[i].id+'-'+this.client_id;
 173                     var val = template.get('innerHTML');
 174                     if (list[i].profileurl) {
 175                         val = val.replace('___name___', '<a href="'+list[i].profileurl+'">'+list[i].fullname+'</a>');
 176                     } else {
 177                         val = val.replace('___name___', list[i].fullname);
 178                     }
 179                     if (list[i]['delete']||newcmt) {
 180                         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;
 181                     }
 182                     val = val.replace('___time___', list[i].time);
 183                     val = val.replace('___picture___', list[i].avatar);
 184                     val = val.replace('___content___', list[i].content);
 185                     val = '<li id="'+htmlid+'">'+val+'</li>';
 186                     ret.ids.push(htmlid);
 187                     html = (val+html);
 188                 }
 189                 ret.html = html;
 190                 return ret;
 191             },
 192             load: function(page) {
 193                 var scope = this;
 194                 var container = Y.one('#comment-ctrl-'+this.client_id);
 195                 var params = {
 196                     'page': page
 197                 }
 198                 this.request({
 199                     scope: scope,
 200                     params: params,
 201                     callback: function(id, ret, args) {
 202                         var linktext = Y.one('#comment-link-text-'+scope.client_id);
 203                         linktext.set('innerHTML', M.str.moodle.comments + ' ('+ret.count+')');
 204                         var container = Y.one('#comment-list-'+scope.client_id);
 205                         var pagination = Y.one('#comment-pagination-'+scope.client_id);
 206                         if (ret.pagination) {
 207                             pagination.set('innerHTML', ret.pagination);
 208                         } else {
 209                             //empty paging bar
 210                             pagination.set('innerHTML', '');
 211                         }
 212                         var result = scope.render(ret.list);
 213                         container.set('innerHTML', result.html);
 214                         args.scope.register_pagination();
 215                         args.scope.register_delete_buttons();
 216                     }
 217                 });
 218             },
 219
 220             dodelete: function(id) { // note: delete is a reserved word in javascript, chrome and safary do not like it at all here!
 221                 var scope = this;
 222                 var params = {'commentid': id};
 223                 scope.cancel_delete();
 224                 function remove_dom(type, anim, cmt) {
 225                     cmt.remove();
 226                 }
 227                 this.request({
 228                     action: 'delete',
 229                     scope: scope,
 230                     params: params,
 231                     callback: function(id, resp, args) {
 232                         var htmlid= 'comment-'+resp.commentid+'-'+resp.client_id;
 233                         var attributes = {
 234                             width:{to:0},
 235                             height:{to:0}
 236                         };
 237                         var cmt = Y.one('#'+htmlid);
 238                         cmt.setStyle('overflow', 'hidden');
 239                         var anim = new YAHOO.util.Anim(htmlid, attributes, 1, YAHOO.util.Easing.easeOut);
 240                         anim.onComplete.subscribe(remove_dom, cmt, this);
 241                         anim.animate();
 242                     }
 243                 }, true);
 244             },
 245             register_actions: function() {
 246                 // add new comment
 247                 var action_btn = Y.one('#comment-action-post-'+this.client_id);
 248                 if (action_btn) {
 249                     action_btn.on('click', function(e) {
 250                         e.preventDefault();
 251                         this.post();
 252                         return false;
 253                     }, this);
 254                 }
 255                 // cancel comment box
 256                 var cancel = Y.one('#comment-action-cancel-'+this.client_id);
 257                 if (cancel) {
 258                     cancel.on('click', function(e) {
 259                         e.preventDefault();
 260                         this.view(0);
 261                         return false;
 262                     }, this);
 263                 }
 264             },
 265             register_delete_buttons: function() {
 266                 var scope = this;
 267                 // page buttons
 268                 Y.all('div.comment-delete a').each(
 269                     function(node, id) {
 270                         var theid = node.get('id');
 271                         var parseid = new RegExp("comment-delete-"+scope.client_id+"-(\\d+)", "i");
 272                         var commentid = theid.match(parseid);
 273                         if (!commentid) {
 274                             return;
 275                         }
 276                         if (commentid[1]) {
 277                             Y.Event.purgeElement('#'+theid, false, 'click');
 278                         }
 279                         node.on('click', function(e, node) {
 280                             e.preventDefault();
 281                             var width = CommentHelper.confirmoverlay.bodyNode.getStyle('width');
 282                             var re = new RegExp("(\\d+).*", "i");
 283                             var result = width.match(re);
 284                             if (result[1]) {
 285                                 width = Number(result[1]);
 286                             } else {
 287                                 width = 0;
 288                             }
 289                             //CommentHelper.confirmoverlay.set('xy', [e.pageX-(width/2), e.pageY]);
 290                             CommentHelper.confirmoverlay.set('xy', [e.pageX-width-5, e.pageY]);
 291                             CommentHelper.confirmoverlay.set('visible', true);
 292                             Y.one('#canceldelete-'+scope.client_id).on('click', function(e) {
 293                                                                 e.preventDefault();
 294                                 scope.cancel_delete();
 295                                 });
 296                             Y.Event.purgeElement('#confirmdelete-'+scope.client_id, false, 'click');
 297                             Y.one('#confirmdelete-'+scope.client_id).on('click', function(e) {
 298                                                                         e.preventDefault();
 299                                     if (commentid[1]) {
 300                                         scope.dodelete(commentid[1]);
 301                                     }
 302                                 });
 303                         }, scope, node);
 304                     }
 305                 );
 306             },
 307             cancel_delete: function() {
 308                 CommentHelper.confirmoverlay.set('visible', false);
 309             },
 310             register_pagination: function() {
 311                 var scope = this;
 312                 // page buttons
 313                 Y.all('#comment-pagination-'+this.client_id+' a').each(
 314                     function(node, id) {
 315                         node.on('click', function(e, node) {
 316                                                         e.preventDefault();
 317                             var id = node.get('id');
 318                             var re = new RegExp("comment-page-"+this.client_id+"-(\\d+)", "i");
 319                             var result = id.match(re);
 320                             this.load(result[1]);
 321                         }, scope, node);
 322                     }
 323                 );
 324             },
 325             view: function(page) {
 326                 var container = Y.one('#comment-ctrl-'+this.client_id);
 327                 var ta = Y.one('#dlg-content-'+this.client_id);
 328                 var img = Y.one('#comment-img-'+this.client_id);
 329                 var d = container.getStyle('display');
 330                 if (d=='none'||d=='') {
 331                     // show
 332                     if (this.env != 'block_comments') {
 333                         this.load(page);
 334                     } else {
 335                         this.register_delete_buttons();
 336                         this.register_pagination();
 337                     }
 338                     container.setStyle('display', 'block');
 339                     img.src=M.util.image_url('t/expanded', 'core');
 340                 } else {
 341                     // hide
 342                     container.setStyle('display', 'none');
 343                     img.src=M.util.image_url('t/collapsed', 'core');
 344                     if (ta) {
 345                         ta.set('value','');
 346                     }
 347                 }
 348                 if (ta) {
 349                     //toggle_textarea.apply(ta, [false]);
 350                     //// reset textarea size
 351                     ta.on('click', function() {
 352                         this.toggle_textarea(true);
 353                     }, this)
 354                     //ta.onkeypress = function() {
 355                         //if (this.scrollHeight > this.clientHeight && !window.opera)
 356                             //this.rows += 1;
 357                     //}
 358                     ta.on('blur', function() {
 359                         this.toggle_textarea(false);
 360                     }, this);
 361                 }
 362                 this.register_actions();
 363                 return false;
 364             },
 365             toggle_textarea: function(focus) {
 366                 var t = Y.one('#dlg-content-'+this.client_id);
 367                 if (focus) {
 368                     if (t.get('value') == M.str.moodle.addcomment) {
 369                         t.set('value', '');
 370                         t.setStyle('color', 'black');
 371                     }
 372                 }else{
 373                     if (t.get('value') == '') {
 374                         t.set('value', M.str.moodle.addcomment);
 375                         t.setStyle('color','grey');
 376                         t.set('rows', 2);
 377                     }
 378                 }
 379             },
 380             wait: function() {
 381                 var container = Y.one('#comment-list-'+this.client_id);
 382                 container.set('innerHTML', '<div class="mdl-align"><img src="'+M.util.image_url('i/loading', 'core')+'" /></div>');
 383             }
 384         });
 385
 386         new CommentHelper(options);
 387     },
 388     init_admin: function(Y) {
 389         var select_all = Y.one('#comment_select_all');
 390         select_all.on('click', function(e) {
 391             var comments = document.getElementsByName('comments');
 392             var checked = false;
 393             for (var i in comments) {
 394                 if (comments[i].checked) {
 395                     checked=true;
 396                 }
 397             }
 398             for (i in comments) {
 399                 comments[i].checked = !checked;
 400             }
 401             this.set('checked', !checked);
 402         });
 403
 404         var comments_delete = Y.one('#comments_delete');
 405         if (comments_delete) {
 406             comments_delete.on('click', function(e) {
 407                 e.preventDefault();
 408                 var list = '';
 409                 var comments = document.getElementsByName('comments');
 410                 for (var i in comments) {
 411                     if (typeof comments[i] == 'object' && comments[i].checked) {
 412                         list += (comments[i].value + '-');
 413                     }
 414                 }
 415                 if (!list) {
 416                     return;
 417                 }
 418                 var args = {};
 419                 args.message = M.str.admin.confirmdeletecomments;
 420                 args.callback = function() {
 421                     var url = M.cfg.wwwroot + '/comment/index.php';
 422
 423                     var data = {
 424                         'commentids': list,
 425                         'sesskey': M.cfg.sesskey,
 426                         'action': 'delete'
 427                     }
 428                     var cfg = {
 429                         method: 'POST',
 430                         on: {
 431                             complete: function(id,o,p) {
 432                                 if (!o) {
 433                                     alert('IO FATAL');
 434                                     return;
 435                                 }
 436                                 if (o.responseText == 'yes') {
 437                                     location.reload();
 438                                 }
 439                             }
 440                         },
 441                         arguments: {
 442                             scope: this
 443                         },
 444                         headers: {
 445                             'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
 446                             'User-Agent': 'MoodleComment/3.0'
 447                         },
 448                         data: build_querystring(data)
 449                     };
 450                     Y.io(url, cfg);
 451                 }
 452                 M.util.show_confirm_dialog(e, args);
 453             });
 454         }
 455     }
 456 };