comment/comment.js

   1 // This file is part of Moodle - http://moodle.org/
   2 //
   3 // Moodle is free software: you can redistribute it and/or modify
   4 // it under the terms of the GNU General Public License as published by
   5 // the Free Software Foundation, either version 3 of the License, or
   6 // (at your option) any later version.
   7 //
   8 // Moodle is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 // GNU General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU General Public License
  14 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 /**
  17  * Comment Helper
  18  * @author Dongsheng Cai <dongsheng@moodle.com>
  19  */
  20 M.core_comment = {
  21     /**
  22      * Initialize commenting system
  23      */
  24     init: function(Y, options) {
  25         var CommentHelper = function(args) {
  26             CommentHelper.superclass.constructor.apply(this, arguments);
  27         };
  28         CommentHelper.NAME = "COMMENT";
  29         CommentHelper.ATTRS = {
  30             options: {},
  31             lang: {}
  32         };
  33         Y.extend(CommentHelper, Y.Base, {
  34             api: M.cfg.wwwroot+'/comment/comment_ajax.php',
  35             initializer: function(args) {
  36                 var scope = this;
  37                 this.client_id = args.client_id;
  38                 this.itemid = args.itemid;
  39                 this.commentarea = args.commentarea;
  40                 this.component = args.component;
  41                 this.courseid = args.courseid;
  42                 this.contextid = args.contextid;
  43                 this.autostart = (args.autostart);
  44                 // expand comments?
  45                 if (this.autostart) {
  46                     this.view(args.page);
  47                 }
  48                 // load comments
  49                 var handle = Y.one('#comment-link-'+this.client_id);
  50                 // hide toggle link
  51                 if (handle) {
  52                     if (args.notoggle) {
  53                         handle.setStyle('display', 'none');
  54                     }
  55                     handle.on('click', function(e) {
  56                         e.preventDefault();
  57                         this.view(0);
  58                         return false;
  59                     }, this);
  60                 }
  61                 scope.toggle_textarea(false);
  62             },
  63             post: function() {
  64                 var ta = Y.one('#dlg-content-'+this.client_id);
  65                 var scope = this;
  66                 var value = ta.get('value');
  67                 if (value && value != M.util.get_string('addcomment', 'moodle')) {
  68                     ta.set('disabled', true);
  69                     ta.setStyles({
  70                         'backgroundImage': 'url(' + M.util.image_url('i/loading_small', 'core') + ')',
  71                         'backgroundRepeat': 'no-repeat',
  72                         'backgroundPosition': 'center center'
  73                     });
  74                     var params = {'content': value};
  75                     this.request({
  76                         action: 'add',
  77                         scope: scope,
  78                         params: params,
  79                         callback: function(id, obj, args) {
  80                             var scope = args.scope;
  81                             var cid = scope.client_id;
  82                             var ta = Y.one('#dlg-content-'+cid);
  83                             ta.set('value', '');
  84                             ta.set('disabled', false);
  85                             ta.setStyle('backgroundImage', 'none');
  86                             scope.toggle_textarea(false);
  87                             var container = Y.one('#comment-list-'+cid);
  88                             var result = scope.render([obj], true);
  89                             var newcomment = Y.Node.create(result.html);
  90                             container.appendChild(newcomment);
  91                             var ids = result.ids;
  92                             var linkText = Y.one('#comment-link-text-' + cid);
  93                             if (linkText) {
  94                                 linkText.set('innerHTML', M.util.get_string('commentscount', 'moodle', obj.count));
  95                             }
  96                             for(var i in ids) {
  97                                 var attributes = {
  98                                     color: { to: '#06e' },
  99                                     backgroundColor: { to: '#FFE390' }
 100                                 };
 101                                 var anim = new Y.YUI2.util.ColorAnim(ids[i], attributes);
 102                                 anim.animate();
 103                             }
 104                             scope.register_pagination();
 105                             scope.register_delete_buttons();
 106                         }
 107                     }, true);
 108                 } else {
 109                     var attributes = {
 110                         backgroundColor: { from: '#FFE390', to:'#FFFFFF' }
 111                     };
 112                     var anim = new Y.YUI2.util.ColorAnim('dlg-content-'+cid, attributes);
 113                     anim.animate();
 114                 }
 115             },
 116             request: function(args, noloading) {
 117                 var params = {};
 118                 var scope = this;
 119                 if (args['scope']) {
 120                     scope = args['scope'];
 121                 }
 122                 //params['page'] = args.page?args.page:'';
 123                 // the form element only accept certain file types
 124                 params['sesskey']   = M.cfg.sesskey;
 125                 params['action']    = args.action?args.action:'';
 126                 params['client_id'] = this.client_id;
 127                 params['itemid']    = this.itemid;
 128                 params['area']      = this.commentarea;
 129                 params['courseid']  = this.courseid;
 130                 params['contextid'] = this.contextid;
 131                 params['component'] = this.component;
 132                 if (args['params']) {
 133                     for (i in args['params']) {
 134                         params[i] = args['params'][i];
 135                     }
 136                 }
 137                 var cfg = {
 138                     method: 'POST',
 139                     on: {
 140                         complete: function(id,o,p) {
 141                             if (!o) {
 142                                 alert('IO FATAL');
 143                                 return false;
 144                             }
 145                             var data = Y.JSON.parse(o.responseText);
 146                             if (data.error) {
 147                                 if (data.error == 'require_login') {
 148                                     args.callback(id,data,p);
 149                                     return true;
 150                                 }
 151                                 alert(data.error);
 152                                 return false;
 153                             } else {
 154                                 args.callback(id,data,p);
 155                                 return true;
 156                             }
 157                         }
 158                     },
 159                     arguments: {
 160                         scope: scope
 161                     },
 162                     headers: {
 163                         'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
 164                     },
 165                     data: build_querystring(params)
 166                 };
 167                 if (args.form) {
 168                     cfg.form = args.form;
 169                 }
 170                 Y.io(this.api, cfg);
 171                 if (!noloading) {
 172                     this.wait();
 173                 }
 174             },
 175             render: function(list, newcmt) {
 176                 var ret = {};
 177                 ret.ids = [];
 178                 var template = Y.one('#cmt-tmpl');
 179                 var html = '';
 180                 for(var i in list) {
 181                     var htmlid = 'comment-'+list[i].id+'-'+this.client_id;
 182                     var val = template.get('innerHTML');
 183                     if (list[i].profileurl) {
 184                         val = val.replace('___name___', '<a href="'+list[i].profileurl+'">'+list[i].fullname+'</a>');
 185                     } else {
 186                         val = val.replace('___name___', list[i].fullname);
 187                     }
 188                     if (list[i]['delete']||newcmt) {
 189                         list[i].content = '<div class="comment-delete"><a href="#" id ="comment-delete-'+this.client_id+'-'+list[i].id+'" title="'+M.util.get_string('deletecomment', 'moodle')+'"><img alt="" src="'+M.util.image_url('t/delete', 'core')+'" /></a></div>' + list[i].content;
 190                     }
 191                     val = val.replace('___time___', list[i].time);
 192                     val = val.replace('___picture___', list[i].avatar);
 193                     val = val.replace('___content___', list[i].content);
 194                     val = '<li id="'+htmlid+'">'+val+'</li>';
 195                     ret.ids.push(htmlid);
 196                     html = (val+html);
 197                 }
 198                 ret.html = html;
 199                 return ret;
 200             },
 201             load: function(page) {
 202                 var scope = this;
 203                 var container = Y.one('#comment-ctrl-'+this.client_id);
 204                 var params = {
 205                     'action': 'get',
 206                     'page': page
 207                 };
 208                 this.request({
 209                     scope: scope,
 210                     params: params,
 211                     callback: function(id, ret, args) {
 212                         var linkText = Y.one('#comment-link-text-' + scope.client_id);
 213                         if (ret.count && linkText) {
 214                             linkText.set('innerHTML', M.util.get_string('commentscount', 'moodle', ret.count));
 215                         }
 216                         var container = Y.one('#comment-list-'+scope.client_id);
 217                         var pagination = Y.one('#comment-pagination-'+scope.client_id);
 218                         if (ret.pagination) {
 219                             pagination.set('innerHTML', ret.pagination);
 220                         } else {
 221                             //empty paging bar
 222                             pagination.set('innerHTML', '');
 223                         }
 224                         if (ret.error == 'require_login') {
 225                             var result = {};
 226                             result.html = M.util.get_string('commentsrequirelogin', 'moodle');
 227                         } else {
 228                             var result = scope.render(ret.list);
 229                         }
 230                         container.set('innerHTML', result.html);
 231                         var img = Y.one('#comment-img-'+scope.client_id);
 232                         if (img) {
 233                             img.set('src', M.util.image_url('t/expanded', 'core'));
 234                         }
 235                         args.scope.register_pagination();
 236                         args.scope.register_delete_buttons();
 237                     }
 238                 });
 239             },
 240
 241             dodelete: function(id) { // note: delete is a reserved word in javascript, chrome and safary do not like it at all here!
 242                 var scope = this,
 243                     cid = scope.client_id,
 244                     params = {'commentid': id};
 245                 function remove_dom(type, anim, cmt) {
 246                     cmt.remove();
 247                     var linkText = Y.one('#comment-link-text-' + cid),
 248                         comments = Y.all('#comment-list-' + cid + ' li');
 249                     if (linkText && comments) {
 250                         linkText.set('innerHTML', M.util.get_string('commentscount', 'moodle', comments.size()));
 251                     }
 252                 }
 253                 this.request({
 254                     action: 'delete',
 255                     scope: scope,
 256                     params: params,
 257                     callback: function(id, resp, args) {
 258                         var htmlid= 'comment-'+resp.commentid+'-'+resp.client_id;
 259                         var attributes = {
 260                             width:{to:0},
 261                             height:{to:0}
 262                         };
 263                         var cmt = Y.one('#'+htmlid);
 264                         cmt.setStyle('overflow', 'hidden');
 265                         var anim = new Y.YUI2.util.Anim(htmlid, attributes, 1, Y.YUI2.util.Easing.easeOut);
 266                         anim.onComplete.subscribe(remove_dom, cmt, this);
 267                         anim.animate();
 268                     }
 269                 }, true);
 270             },
 271             register_actions: function() {
 272                 // add new comment
 273                 var action_btn = Y.one('#comment-action-post-'+this.client_id);
 274                 if (action_btn) {
 275                     action_btn.on('click', function(e) {
 276                         e.preventDefault();
 277                         this.post();
 278                         return false;
 279                     }, this);
 280                 }
 281                 // cancel comment box
 282                 var cancel = Y.one('#comment-action-cancel-'+this.client_id);
 283                 if (cancel) {
 284                     cancel.on('click', function(e) {
 285                         e.preventDefault();
 286                         this.view(0);
 287                         return false;
 288                     }, this);
 289                 }
 290             },
 291             register_delete_buttons: function() {
 292                 var scope = this;
 293                 // page buttons
 294                 Y.all('div.comment-delete a').each(
 295                     function(node, id) {
 296                         var theid = node.get('id');
 297                         var parseid = new RegExp("comment-delete-"+scope.client_id+"-(\\d+)", "i");
 298                         var commentid = theid.match(parseid);
 299                         if (!commentid) {
 300                             return;
 301                         }
 302                         if (commentid[1]) {
 303                             Y.Event.purgeElement('#'+theid, false, 'click');
 304                         }
 305                         node.on('click', function(e) {
 306                             e.preventDefault();
 307                             if (commentid[1]) {
 308                                 scope.dodelete(commentid[1]);
 309                             }
 310                         });
 311                         // Also handle space/enter key.
 312                         node.on('key', function(e) {
 313                             e.preventDefault();
 314                             if (commentid[1]) {
 315                                 scope.dodelete(commentid[1]);
 316                             }
 317                         }, '13,32');
 318                         // 13 and 32 are the keycodes for space and enter.
 319                     }
 320                 );
 321             },
 322             register_pagination: function() {
 323                 var scope = this;
 324                 // page buttons
 325                 Y.all('#comment-pagination-'+this.client_id+' a').each(
 326                     function(node, id) {
 327                         node.on('click', function(e, node) {
 328                             e.preventDefault();
 329                             var id = node.get('id');
 330                             var re = new RegExp("comment-page-"+this.client_id+"-(\\d+)", "i");
 331                             var result = id.match(re);
 332                             this.load(result[1]);
 333                         }, scope, node);
 334                     }
 335                 );
 336             },
 337             view: function(page) {
 338                 var container = Y.one('#comment-ctrl-'+this.client_id);
 339                 var ta = Y.one('#dlg-content-'+this.client_id);
 340                 var img = Y.one('#comment-img-'+this.client_id);
 341                 var d = container.getStyle('display');
 342                 if (d=='none'||d=='') {
 343                     // show
 344                     if (!this.autostart) {
 345                         this.load(page);
 346                     } else {
 347                         this.register_delete_buttons();
 348                         this.register_pagination();
 349                     }
 350                     container.setStyle('display', 'block');
 351                     if (img) {
 352                         img.set('src', M.util.image_url('t/expanded', 'core'));
 353                     }
 354                 } else {
 355                     // hide
 356                     container.setStyle('display', 'none');
 357                     var collapsedimage = 't/collapsed'; // ltr mode
 358                     if ( Y.one(document.body).hasClass('dir-rtl') ) {
 359                         collapsedimage = 't/collapsed_rtl';
 360                     } else {
 361                         collapsedimage = 't/collapsed';
 362                     }
 363                     img.set('src', M.util.image_url(collapsedimage, 'core'));
 364                     if (ta) {
 365                         ta.set('value','');
 366                     }
 367                 }
 368                 if (ta) {
 369                     //toggle_textarea.apply(ta, [false]);
 370                     //// reset textarea size
 371                     ta.on('focus', function() {
 372                         this.toggle_textarea(true);
 373                     }, this);
 374                     //ta.onkeypress = function() {
 375                         //if (this.scrollHeight > this.clientHeight && !window.opera)
 376                             //this.rows += 1;
 377                     //}
 378                     ta.on('blur', function() {
 379                         this.toggle_textarea(false);
 380                     }, this);
 381                 }
 382                 this.register_actions();
 383                 return false;
 384             },
 385             toggle_textarea: function(focus) {
 386                 var t = Y.one('#dlg-content-'+this.client_id);
 387                 if (!t) {
 388                     return false;
 389                 }
 390                 if (focus) {
 391                     if (t.get('value') == M.util.get_string('addcomment', 'moodle')) {
 392                         t.set('value', '');
 393                         t.setStyle('color', 'black');
 394                     }
 395                 }else{
 396                     if (t.get('value') == '') {
 397                         t.set('value', M.util.get_string('addcomment', 'moodle'));
 398                         t.setStyle('color','grey');
 399                         t.set('rows', 2);
 400                     }
 401                 }
 402             },
 403             wait: function() {
 404                 var container = Y.one('#comment-list-'+this.client_id);
 405                 container.set('innerHTML', '<div class="mdl-align"><img src="'+M.util.image_url('i/loading_small', 'core')+'" /></div>');
 406             }
 407         });
 408
 409         new CommentHelper(options);
 410     },
 411     init_admin: function(Y) {
 412         var select_all = Y.one('#comment_select_all');
 413         select_all.on('click', function(e) {
 414             var comments = document.getElementsByName('comments');
 415             var checked = false;
 416             for (var i in comments) {
 417                 if (comments[i].checked) {
 418                     checked=true;
 419                 }
 420             }
 421             for (i in comments) {
 422                 comments[i].checked = !checked;
 423             }
 424             this.set('checked', !checked);
 425         });
 426
 427         var comments_delete = Y.one('#comments_delete');
 428         if (comments_delete) {
 429             comments_delete.on('click', function(e) {
 430                 e.preventDefault();
 431                 var list = '';
 432                 var comments = document.getElementsByName('comments');
 433                 for (var i in comments) {
 434                     if (typeof comments[i] == 'object' && comments[i].checked) {
 435                         list += (comments[i].value + '-');
 436                     }
 437                 }
 438                 if (!list) {
 439                     return;
 440                 }
 441                 var args = {};
 442                 args.message = M.util.get_string('confirmdeletecomments', 'admin');
 443                 args.callback = function() {
 444                     var url = M.cfg.wwwroot + '/comment/index.php';
 445
 446                     var data = {
 447                         'commentids': list,
 448                         'sesskey': M.cfg.sesskey,
 449                         'action': 'delete'
 450                     };
 451                     var cfg = {
 452                         method: 'POST',
 453                         on: {
 454                             complete: function(id,o,p) {
 455                                 if (!o) {
 456                                     alert('IO FATAL');
 457                                     return;
 458                                 }
 459                                 if (o.responseText == 'yes') {
 460                                     location.reload();
 461                                 }
 462                             }
 463                         },
 464                         arguments: {
 465                             scope: this
 466                         },
 467                         headers: {
 468                             'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
 469                         },
 470                         data: build_querystring(data)
 471                     };
 472                     Y.io(url, cfg);
 473                 };
 474                 M.util.show_confirm_dialog(e, args);
 475             });
 476         }
 477     }
 478 };