plugins/querytable/static/js/querytable.js

   1 /**
   2  * Description: display a query result in a datatables-powered <table>
   3  * Copyright (c) 2012-2013 UPMC Sorbonne Universite - INRIA
   4  * License: GPLv3
   5  */
   6
   7 QUERYTABLE_BGCOLOR_RESET   = 0;
   8 QUERYTABLE_BGCOLOR_ADDED   = 1;
   9 QUERYTABLE_BGCOLOR_REMOVED = 2;
  10
  11 (function($){
  12
  13     var debug=false;
  14 //    debug=true
  15
  16     var QueryTable = Plugin.extend({
  17
  18         init: function(options, element) {
  19         this.classname="querytable";
  20             this._super(options, element);
  21
  22             /* Member variables */
  23             var query = manifold.query_store.find_analyzed_query(this.options.query_uuid);
  24             this.object = query.object; // XXX
  25
  26             /* Events */
  27             this.elmt().on('show', this, this.on_show);
  28             this.elmt().on('shown.bs.tab', this, this.on_show);
  29             this.elmt().on('resize', this, this.on_resize);
  30
  31             //// we need 2 different keys
  32             // * canonical_key is the primary key as derived from metadata (typically: urn)
  33             //   and is used to communicate about a given record with the other plugins
  34             // * init_key is a key that both kinds of records
  35             //   (i.e. records returned by both queries) must have (typically: hrn or hostname)
  36             //   in general query_all will return well populated records, but query
  37             //   returns records with only the fields displayed on startup
  38             var keys = manifold.metadata.get_key(this.object);
  39             this.canonical_key = (keys && keys.length == 1) ? keys[0] : undefined;
  40             //
  41             this.init_key = this.options.init_key;
  42             // have init_key default to canonical_key
  43             this.init_key = this.init_key || this.canonical_key;
  44
  45             /* sanity check */
  46             if ( ! this.init_key )
  47                 messages.warning ("QueryTable : cannot find init_key");
  48             if ( ! this.canonical_key )
  49                 messages.warning ("QueryTable : cannot find canonical_key");
  50             if (debug)
  51                 messages.debug("querytable: canonical_key="+this.canonical_key+" init_key="+this.init_key);
  52
  53             /* Setup query and record handlers */
  54             this.listen_query(options.query_uuid);
  55
  56             /* GUI setup and event binding */
  57             this.initialize_table();
  58         },
  59
  60         /* PLUGIN EVENTS */
  61
  62         on_show: function(e) {
  63         if (debug) messages.debug("querytable.on_show");
  64             var self = e.data;
  65             self.table.fnAdjustColumnSizing();
  66     },
  67
  68         on_resize: function(e) {
  69         if (debug) messages.debug("querytable.on_resize");
  70             var self = e.data;
  71             self.table.fnAdjustColumnSizing();
  72     },
  73
  74         /* GUI EVENTS */
  75
  76         /* GUI MANIPULATION */
  77
  78         initialize_table: function()
  79         {
  80             /* Transforms the table into DataTable, and keep a pointer to it */
  81             var self = this;
  82             var actual_options = {
  83                 // Customize the position of Datatables elements (length,filter,button,...)
  84                 // we use a fluid row on top and another on the bottom, making sure we take 12 grid elt's each time
  85                 //sDom: "<'row'<'col-xs-5'l><'col-xs-1'r><'col-xs-6'f>>t<'row'<'col-xs-5'i><'col-xs-7'p>>",
  86                 sDom: "<'row'<'col-xs-5'f><'col-xs-1'r><'col-xs-6 columns_selector'>>t<'row'<'col-xs-5'l><'col-xs-7'p>>",
  87         // XXX as of sept. 2013, I cannot locate a bootstrap3-friendly mode for now
  88         // hopefully this would come with dataTables v1.10 ?
  89         // in any case, search for 'sPaginationType' all over the code for more comments
  90                 sPaginationType: 'bootstrap',
  91                 // Handle the null values & the error : Datatables warning Requested unknown parameter
  92                 // http://datatables.net/forums/discussion/5331/datatables-warning-...-requested-unknown-parameter/p2
  93                 aoColumnDefs: [{sDefaultContent: '', aTargets: [ '_all' ]}],
  94                 // WARNING: this one causes tables in a 'tabs' that are not exposed at the time this is run to show up empty
  95                 // sScrollX: '100%',       /* Horizontal scrolling */
  96                 bProcessing: true,      /* Loading */
  97                 fnDrawCallback: function() { self._querytable_draw_callback.call(self); },
  98                 fnRowCallback: function( nRow, aData, iDisplayIndex, iDisplayIndexFull ) {
  99                     // This function is called on fnAddData to set the TR id. What about fnUpdate ?
 100
 101                     // Get the key from the raw data array aData
 102                     var key = self.canonical_key;
 103
 104                     // Get the index of the key in the columns
 105                     var cols = self._get_columns();
 106                     var index = self.getColIndex(key, cols);
 107                     if (index != -1) {
 108                         // The key is found in the table, set the TR id after the data
 109                         $(nRow).attr('id', self.id_from_key(key, aData[index]));
 110                     }
 111
 112                     // That's the usual return value
 113                     return nRow;
 114                 }
 115                 // XXX use $.proxy here !
 116             };
 117             // the intention here is that options.datatables_options as coming from the python object take precedence
 118         // xxx DISABLED by jordan: was causing errors in datatables.js
 119         // xxx turned back on by Thierry - this is the code that takes python-provided options into account
 120         // check your datatables_options tag instead
 121         // however, we have to accumulate in aoColumnDefs from here (above)
 122         // and from the python wrapper (checkboxes management, plus any user-provided aoColumnDefs)
 123         if ( 'aoColumnDefs' in this.options.datatables_options) {
 124         actual_options['aoColumnDefs']=this.options.datatables_options['aoColumnDefs'].concat(actual_options['aoColumnDefs']);
 125         delete this.options.datatables_options['aoColumnDefs'];
 126         }
 127         $.extend(actual_options, this.options.datatables_options );
 128             this.table = this.elmt('table').dataTable(actual_options);
 129
 130             /* Setup the SelectAll button in the dataTable header */
 131             /* xxx not sure this is still working */
 132             var oSelectAll = $('#datatableSelectAll-'+ this.options.plugin_uuid);
 133             oSelectAll.html("<span class='glyphicon glyphicon-ok' style='float:right;display:inline-block;'></span>Select All");
 134             oSelectAll.button();
 135             oSelectAll.css('font-size','11px');
 136             oSelectAll.css('float','right');
 137             oSelectAll.css('margin-right','15px');
 138             oSelectAll.css('margin-bottom','5px');
 139             oSelectAll.unbind('click');
 140             oSelectAll.click(this._selectAll);
 141
 142             /* Add a filtering function to the current table
 143              * Note: we use closure to get access to the 'options'
 144              */
 145             $.fn.dataTableExt.afnFiltering.push(function( oSettings, aData, iDataIndex ) {
 146                 /* No filtering if the table does not match */
 147                 if (oSettings.nTable.id != self.options.plugin_uuid + '__table')
 148                     return true;
 149                 return self._querytable_filter.call(self, oSettings, aData, iDataIndex);
 150             });
 151
 152             /* Processing hidden_columns */
 153             $.each(this.options.hidden_columns, function(i, field) {
 154                 self.hide_column(field);
 155             });
 156             $(".dataTables_filter").append("<div style='display:inline-block;height:27px;width:27px;padding-left:6px;padding-top:4px;'><span class='glyphicon glyphicon-search'></span></div>");
 157             $(".dataTables_filter input").css("width","100%");
 158
 159             // resource info
 160             var sTable = this.table;
 161             var oSettings = this.table.fnSettings();
 162             var cols = oSettings.aoColumns;
 163             var self = this;
 164             $('table.dataTable').delegate('a.resource-info','click',function() {
 165                 var aPos = sTable.fnGetPosition( this.parentNode );
 166                 var aData = sTable.fnGetData( aPos[0] );
 167                 console.log(aData);
 168
 169                 var index = {}
 170                 // XXX Loic @ Hardcoded !!! Maybe a loop over all fields would be better
 171                 index['network_hrn'] = self.getColIndex('network_hrn',cols);
 172                 var network_hrn = aData[index['network_hrn']];
 173
 174                 index['hostname'] = self.getColIndex('hostname',cols);
 175                 index['urn'] = self.getColIndex('urn',cols);
 176                 index['type'] = self.getColIndex('type',cols);
 177                 //index['status'] = self.getColIndex('boot_state',cols);
 178                 index['available'] = self.getColIndex('available',cols);
 179                 index['testbed'] = self.getColIndex('testbed_name',cols);
 180                 index['facility'] = self.getColIndex('facility_name',cols);
 181                 var resourceData = {
 182                     'hostname' : strip(aData[index['hostname']]),
 183                     'urn' : aData[index['urn']],
 184                     'type' : aData[index['type']],
 185                     //'status' : aData[index['status']],
 186                     'available' : aData[index['available']],
 187                     'testbed' : aData[index['testbed']],
 188                     'facility' : aData[index['facility']],
 189                 };
 190
 191                 /*
 192                 //Greece: 37.6687092,22.2282404
 193                 if (network_hrn == 'omf.nitos') {
 194                     var logo = 'nitos';
 195                     var resourceLocation = {
 196                         'longitude' : '22.2282404',
 197                         'latitude' : '37.6687092',
 198                     };
 199                     var coordinates = resourceLocation['latitude']+','+resourceLocation['longitude'];
 200                 } else if (network_hrn == 'iotlab') {
 201                 */
 202                 if (network_hrn == 'iotlab') {
 203                     var logo = network_hrn;
 204                     var s = resourceData['hostname'].split(".");
 205                     var n = s[0].split("-");
 206                     resourceData['type'] = 'node ( Hardware: <a target="_blank" href="https://www.iot-lab.info/hardware/'+n[0]+'/">'+n[0]+'</a> )';
 207                     var coordinates = resourceData['testbed'];
 208                 } else {
 209                     var logo = resourceData['testbed'];
 210                     var resourceLocation = {
 211                         'longitude' : aData[20],
 212                         'latitude' : aData[17],
 213                     };
 214                     var coordinates = resourceLocation['latitude']+','+resourceLocation['longitude'];
 215                     console.log(coordinates);
 216                 }
 217
 218                 var modal = $('#resource-info-modal');
 219                 modal.find('.modal-title').text(resourceData['testbed'] + ': ' +resourceData['hostname']);
 220                 table = modal.find('.modal-resource-info');
 221                 table.html('<tr><td colspan="2"><center><img class="img-responsive" src="/static/img/testbeds/'+logo+'.png" alt="'+resourceData['facility']+' - '+resourceData['testbed']+'" /></center></td></tr>');
 222                 for (var j in resourceData) {
 223                     table.append('<tr><td>' + j + '</td><td>' + resourceData[j] + '</td></tr>');
 224                 }
 225                 if (coordinates != '') {
 226                     table.append('<tr><td colspan="2"><img src="http://maps.google.com/maps/api/staticmap?center='+coordinates+'&zoom=6&size=400x400&sensor=false&markers=color:red%7C'+coordinates+'" style="width:400px; height:400px;" /></td></tr>');
 227                 }
 228                 modal.modal();
 229             });
 230
 231         }, // initialize_table
 232
 233         /**
 234          * @brief Determine index of key in the table columns
 235          * @param key
 236          * @param cols
 237          */
 238         getColIndex: function(key, cols) {
 239             var self = this;
 240             var tabIndex = $.map(cols, function(x, i) { if (self._get_map(x.sTitle) == key) return i; });
 241             return (tabIndex.length > 0) ? tabIndex[0] : -1;
 242         }, // getColIndex
 243
 244     // create a checkbox <input> tag
 245     // computes 'id' attribute from canonical_key
 246     // computes 'init_id' from init_key for initialization phase
 247     // no need to used convoluted ids with plugin-uuid or others, since
 248     // we search using table.$ which looks only in this table
 249         checkbox_html : function (record) {
 250             var result="";
 251             // Prefix id with plugin_uuid
 252             result += "<input";
 253             result += " class='querytable-checkbox'";
 254      // compute id from canonical_key
 255         var id = record[this.canonical_key]
 256      // compute init_id form init_key
 257         var init_id=record[this.init_key];
 258      // set id - for retrieving from an id, or for posting events upon user's clicks
 259         result += " id='"+record[this.canonical_key]+"'";
 260      // set init_id
 261         result += "init_id='" + init_id + "'";
 262      // wrap up
 263             result += " type='checkbox'";
 264             result += " autocomplete='off'";
 265             result += "></input>";
 266             return result;
 267         },
 268
 269
 270         new_record: function(record)
 271         {
 272             var self = this;
 273
 274             // this models a line in dataTables, each element in the line describes a cell
 275             line = new Array();
 276
 277             // go through table headers to get column names we want
 278             // in order (we have temporarily hack some adjustments in names)
 279             var cols = this._get_columns();
 280             var colnames = cols.map(function(x) {return self._get_map(x.sTitle)})
 281             var nb_col = cols.length;
 282             /* if we've requested checkboxes, then forget about the checkbox column for now */
 283             //if (this.options.checkboxes) nb_col -= 1;
 284             // catch up with the last column if checkboxes were requested
 285             if (this.options.checkboxes) {
 286                 // Use a key instead of hostname (hard coded...)
 287                 line.push(this.checkbox_html(record));
 288             }
 289             line.push('<span id="' + this.id_from_key('status', record[this.init_key]) + '"></span>'); // STATUS
 290
 291             /* fill in stuff depending on the column name */
 292             for (var j = 2; j < nb_col - 1; j++) { // nb_col includes status
 293                 if (typeof colnames[j] == 'undefined') {
 294                     line.push('...');
 295                 } else if (colnames[j] == 'hostname') {
 296                     if (record['type'] == 'resource,link')
 297                         //TODO: we need to add source/destination for links
 298                         line.push('');
 299                     else
 300                         //line.push(record['hostname']);
 301                         line.push('<a class="resource-info" data-network_hrn="'+record['network_hrn']+'">' + record['hostname'] + '</a>');
 302
 303                 } else if (colnames[j] == this.init_key && typeof(record) != 'undefined') {
 304                     obj = this.object
 305                     o = obj.split(':');
 306                     if(o.length>1){
 307                         obj = o[1];
 308                     }else{
 309                         obj = o[0];
 310                     }
 311                     /* XXX TODO: Remove this and have something consistant */
 312                     if(obj=='resource'){
 313                         //line.push('<a href="../'+obj+'/'+record['urn']+'"><span class="glyphicon glyphicon-search"></span></a> '+record[this.init_key]);
 314                     }else{
 315                         //line.push('<a href="../'+obj+'/'+record[this.init_key]+'"><span class="glyphicon glyphicon-search"></span></a> '+record[this.init_key]);
 316                     }
 317                     line.push(record[this.init_key]);
 318                 } else {
 319                     if (record[colnames[j]])
 320                         line.push(record[colnames[j]]);
 321                     else
 322                         line.push('');
 323                 }
 324             }
 325
 326             // adding an array in one call is *much* more efficient
 327             // this.table.fnAddData(line);
 328             return line;
 329         },
 330
 331         clear_table: function()
 332         {
 333             this.table.fnClearTable();
 334         },
 335
 336         redraw_table: function()
 337         {
 338             this.table.fnDraw();
 339         },
 340
 341         show_column: function(field)
 342         {
 343             var oSettings = this.table.fnSettings();
 344             var cols = oSettings.aoColumns;
 345             var index = this.getColIndex(field,cols);
 346             if (index != -1)
 347                 this.table.fnSetColumnVis(index, true);
 348         },
 349
 350         hide_column: function(field)
 351         {
 352             var oSettings = this.table.fnSettings();
 353             var cols = oSettings.aoColumns;
 354             var index = this.getColIndex(field,cols);
 355             if (index != -1)
 356                 this.table.fnSetColumnVis(index, false);
 357         },
 358
 359         set_checkbox_from_record_key: function (record_key, checked)
 360         {
 361             if (checked === undefined) checked = true;
 362
 363             // using table.$ to search inside elements that are not visible
 364             var element = this.table.$('[init_id="'+record_key+'"]');
 365             element.attr('checked',checked);
 366         },
 367
 368         // id relates to canonical_key
 369         set_checkbox_from_data: function (id, checked)
 370         {
 371             if (checked === undefined) checked = true;
 372
 373             // using table.$ to search inside elements that are not visible
 374             var element = this.table.$("[id='"+id+"']");
 375             element.attr('checked',checked);
 376         },
 377
 378         /**
 379          * Arguments
 380          *
 381          * key_value: the key from which we deduce the id
 382          * request: STATUS_OKAY, etc.
 383          * content: some HTML content
 384          */
 385         change_status: function(key_value, warnings)
 386         {
 387             var msg;
 388
 389             if ($.isEmptyObject(warnings)) {
 390                 var state = manifold.query_store.get_record_state(this.options.query_uuid, key_value, STATE_SET);
 391                 switch(state) {
 392                     case STATE_SET_IN:
 393                     case STATE_SET_IN_SUCCESS:
 394                     case STATE_SET_OUT_FAILURE:
 395                     case STATE_SET_IN_PENDING:
 396                         // Checkmark sign if no warning for an object in the set
 397                         msg = '&#10003;';
 398                         break;
 399                     default:
 400                         // Nothing is the object is not in the set
 401                         msg = '';
 402                         break;
 403                 }
 404             } else {
 405                 msg = '<ul class="nav nav-pills">';
 406                 msg += '<li class="dropdown">';
 407                 msg += '<a href="#" data-toggle="dropdown" class="dropdown-toggle nopadding"><b>&#9888</b></a>';
 408                 msg += '  <ul class="dropdown-menu dropdown-menu-right" id="menu1">';
 409                 $.each(warnings, function(i,warning) {
 410                     msg += '<li><a href="#">' + warning + '</a></li>';
 411                 });
 412                 msg += '  </ul>';
 413                 msg += '</li>';
 414                 msg += '</ul>';
 415             }
 416
 417             $(document.getElementById(this.id_from_key('status', key_value))).html(msg);
 418             $('[data-toggle="tooltip"]').tooltip({'placement': 'bottom'});
 419
 420         },
 421
 422         set_bgcolor: function(key_value, class_name)
 423         {
 424             var elt = $(document.getElementById(this.id_from_key(this.canonical_key, key_value)))
 425             if (class_name == QUERYTABLE_BGCOLOR_RESET)
 426                 elt.removeClass('added removed');
 427             else
 428                 elt.addClass((class_name == QUERYTABLE_BGCOLOR_ADDED ? 'added' : 'removed'));
 429         },
 430
 431         populate_table: function()
 432         {
 433             // Let's clear the table and only add lines that are visible
 434             var self = this;
 435             this.clear_table();
 436
 437             lines = Array();
 438             var record_keys = [];
 439             manifold.query_store.iter_records(this.options.query_uuid, function (record_key, record) {
 440                 lines.push(self.new_record(record));
 441                 record_keys.push(record_key);
 442             });
 443             this.table.fnAddData(lines);
 444             $.each(record_keys, function(i, record_key) {
 445                 var state = manifold.query_store.get_record_state(self.options.query_uuid, record_key, STATE_SET);
 446                 var warnings = manifold.query_store.get_record_state(self.options.query_uuid, record_key, STATE_WARNINGS);
 447                 switch(state) {
 448                     // XXX The row and checkbox still does not exists !!!!
 449                     case STATE_SET_IN:
 450                     case STATE_SET_IN_SUCCESS:
 451                     case STATE_SET_OUT_FAILURE:
 452                         self.set_checkbox_from_record_key(record_key, true);
 453                         break;
 454                     case STATE_SET_OUT:
 455                     case STATE_SET_OUT_SUCCESS:
 456                     case STATE_SET_IN_FAILURE:
 457                         //self.set_checkbox_from_record_key(record_key, false);
 458                         break;
 459                     case STATE_SET_IN_PENDING:
 460                         self.set_checkbox_from_record_key(record_key, true);
 461                         self.set_bgcolor(record_key, QUERYTABLE_BGCOLOR_ADDED);
 462                         break;
 463                     case STATE_SET_OUT_PENDING:
 464                         //self.set_checkbox_from_record_key(record_key, false);
 465                         self.set_bgcolor(record_key, QUERYTABLE_BGCOLOR_REMOVED);
 466                         break;
 467                 }
 468                 self.change_status(record_key, warnings); // XXX will retrieve status again
 469             });
 470         },
 471
 472         /*************************** QUERY HANDLER ****************************/
 473
 474         on_filter_added: function(filter)
 475         {
 476             this.redraw_table();
 477         },
 478
 479         on_filter_removed: function(filter)
 480         {
 481             this.redraw_table();
 482         },
 483
 484         on_filter_clear: function()
 485         {
 486             this.redraw_table();
 487         },
 488
 489         on_field_added: function(field)
 490         {
 491             this.show_column(field);
 492         },
 493
 494         on_field_removed: function(field)
 495         {
 496             this.hide_column(field);
 497         },
 498
 499         on_field_clear: function()
 500         {
 501             alert('QueryTable::clear_fields() not implemented');
 502         },
 503
 504         /*************************** RECORD HANDLER ***************************/
 505
 506         // Could be the default in parent
 507         on_query_in_progress: function()
 508         {
 509             this.spin();
 510         },
 511
 512         on_query_done: function()
 513         {
 514             this.populate_table();
 515             this.unspin();
 516         },
 517
 518         on_field_state_changed: function(data)
 519         {
 520             // XXX We could get this from data.value
 521             // var state = manifold.query_store.get_record_state(this.options.query_uuid, data.value, data.state);
 522
 523             switch(data.state) {
 524                 case STATE_SET:
 525                     switch(data.op) {
 526                         case STATE_SET_IN:
 527                         case STATE_SET_IN_SUCCESS:
 528                         case STATE_SET_OUT_FAILURE:
 529                             this.set_checkbox_from_data(data.value, true);
 530                             this.set_bgcolor(data.value, QUERYTABLE_BGCOLOR_RESET);
 531                             break;
 532                         case STATE_SET_OUT:
 533                         case STATE_SET_OUT_SUCCESS:
 534                         case STATE_SET_IN_FAILURE:
 535                             this.set_checkbox_from_data(data.value, false);
 536                             this.set_bgcolor(data.value, QUERYTABLE_BGCOLOR_RESET);
 537                             break;
 538                         case STATE_SET_IN_PENDING:
 539                             this.set_checkbox_from_data(data.value, true);
 540                             this.set_bgcolor(data.value, QUERYTABLE_BGCOLOR_ADDED);
 541                             break;
 542                         case STATE_SET_OUT_PENDING:
 543                             this.set_checkbox_from_data(data.value, false);
 544                             this.set_bgcolor(data.value, QUERYTABLE_BGCOLOR_REMOVED);
 545                             break;
 546                     }
 547                     break;
 548
 549                 case STATE_WARNINGS:
 550                     this.change_status(data.key, data.value);
 551                     break;
 552             }
 553         },
 554
 555         /************************** PRIVATE METHODS ***************************/
 556
 557         _get_columns: function()
 558         {
 559             return this.table.fnSettings().aoColumns;
 560             // XXX return $.map(table.fnSettings().aoColumns, function(x, i) { return QUERYTABLE_MAP[x]; });
 561         },
 562
 563         _get_map: function(column_title) {
 564             return (column_title in QUERYTABLE_MAP) ? QUERYTABLE_MAP[column_title] : column_title;
 565         },
 566         /**
 567          * @brief QueryTable filtering function, called for every line in the datatable.
 568          *
 569          * Return value:
 570          *   boolean determining whether the column is visible or not.
 571          */
 572         _querytable_filter: function(oSettings, aData, iDataIndex)
 573         {
 574             var self = this;
 575             var key_col, record_key_value;
 576
 577             /* Determine index of key in the table columns */
 578             key_col = $.map(oSettings.aoColumns, function(x, i) {if (self._get_map(x.sTitle) == self.canonical_key) return i;})[0];
 579
 580             /* Unknown key: no filtering */
 581             if (typeof(key_col) == 'undefined') {
 582                 console.log("Unknown key");
 583                 return true;
 584             }
 585
 586             record_key_value = unfold.get_value(aData[key_col]);
 587
 588             return manifold.query_store.get_record_state(this.options.query_uuid, record_key_value, STATE_VISIBLE);
 589         },
 590
 591         _querytable_draw_callback: function()
 592         {
 593             /*
 594              * Handle clicks on checkboxes: reassociate checkbox click every time
 595              * the table is redrawn
 596              */
 597             this.elts('querytable-checkbox').unbind('click').click(this, this._check_click);
 598
 599             if (!this.table)
 600                 return;
 601
 602             /* Remove pagination if we show only a few results */
 603             var wrapper = this.table; //.parent().parent().parent();
 604             var rowsPerPage = this.table.fnSettings()._iDisplayLength;
 605             var rowsToShow = this.table.fnSettings().fnRecordsDisplay();
 606             var minRowsPerPage = this.table.fnSettings().aLengthMenu[0];
 607
 608             if ( rowsToShow <= rowsPerPage || rowsPerPage == -1 ) {
 609                 $('.querytable_paginate', wrapper).css('visibility', 'hidden');
 610             } else {
 611                 $('.querytable_paginate', wrapper).css('visibility', 'visible');
 612             }
 613
 614             if ( rowsToShow <= minRowsPerPage ) {
 615                 $('.querytable_length', wrapper).css('visibility', 'hidden');
 616             } else {
 617                 $('.querytable_length', wrapper).css('visibility', 'visible');
 618             }
 619         },
 620
 621         _check_click: function(e)
 622         {
 623             var data;
 624             var self = e.data;
 625
 626             e.stopPropagation();
 627
 628             data = {
 629                 state: STATE_SET,
 630                 key  : null,
 631                 op   : this.checked ? STATE_SET_ADD : STATE_SET_REMOVE,
 632                 value: this.id
 633             };
 634             manifold.raise_event(self.options.query_uuid, FIELD_STATE_CHANGED, data);
 635             //return false; // prevent checkbox to be checked, waiting response from manifold plugin api
 636
 637         },
 638
 639         _selectAll: function()
 640         {
 641             // requires jQuery id
 642             var uuid=this.id.split("-");
 643             var oTable=$("#querytable-"+uuid[1]).dataTable();
 644             // Function available in QueryTable 1.9.x
 645             // Filter : displayed data only
 646             var filterData = oTable._('tr', {"filter":"applied"});
 647             /* TODO: WARNING if too many nodes selected, use filters to reduce nuber of nodes */
 648             if(filterData.length<=100){
 649                 $.each(filterData, function(index, obj) {
 650                     var last=$(obj).last();
 651                     var key_value=unfold.get_value(last[0]);
 652                     if(typeof($(last[0]).attr('checked'))=="undefined"){
 653                         $.publish('selected', 'add/'+key_value);
 654                     }
 655                 });
 656             }
 657         },
 658     });
 659
 660     $.plugin('QueryTable', QueryTable);
 661
 662   /* define the 'dom-checkbox' type for sorting in datatables
 663      http://datatables.net/examples/plug-ins/dom_sort.html
 664      using trial and error I found that the actual column number
 665      was in fact given as a third argument, and not second
 666      as the various online resources had it - go figure */
 667     $.fn.dataTableExt.afnSortData['dom-checkbox'] = function  ( oSettings, _, iColumn ) {
 668         return $.map( oSettings.oApi._fnGetTrNodes(oSettings), function (tr, i) {
 669             return result=$('td:eq('+iColumn+') input', tr).prop('checked') ? '1' : '0';
 670         });
 671     };
 672
 673
 674
 675 })(jQuery);
 676
 677 function strip(html)
 678 {
 679    var tmp = document.createElement("DIV");
 680    tmp.innerHTML = html;
 681    return tmp.textContent || tmp.innerText || "";
 682 }