Filter LVWP App 2010

Filter LVWP - JS - 2010

(function(module,$) {
"use strict";

window.pd = window.pd || {};

pd.MeetingsViewModel = function() {
   /* observable state */
   this.FilterTextIm = ko.observable('');
   this.FilterText = ko.computed(this.FilterTextIm)
                        .extend({ throttle: 400 });
   this.LibraryTitle = ko.observable('');
   this.LibrarySubTitle = ko.observable('');
   this.FilterYears = new ko.observableArray([]);
   this.FilterMonths = new ko.observableArray(['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec']);
   this.SelectedYear = ko.observable('');
   this.SelectedMonth = ko.observable('');
   this.Working = ko.observable(true);

   /* populate years filter as Current Year..-=4 */
   for(var cy = parseInt(new Date().getFullYear()), y = cy; y > (cy-4); y--) { this.FilterYears.push(y.toString()); }

   /* model actions */
   this.filterByYear = function(year) {
      this.FilterTextIm('');   // zap the filter text
      year = (year === this.SelectedYear()) ? '' : year;
      this.SelectedYear(year);
   }.bind(this);
   this.filterByMonth = function(month) {
      this.FilterTextIm('');   // zap the filter text
      month = (month === this.SelectedMonth()) ? '' : month;
      this.SelectedMonth(month);
   }.bind(this);

   /* model behaviour */
   this.isSelectedYear = function (year) {
      var y = this.SelectedYear();
      return (y == year);
   }.bind(this);
   this.isSelectedMonth = function (month) {
      var m = this.SelectedMonth();
      return (m == month);
   }.bind(this);
}


pd.FilterLibraryApp = function() {
   var
      viewModel = new pd.MeetingsViewModel(),
      debug = true,
      wpCtx = null,
      wpEvent = null,
      
      filterControlId = null,
      listViewTableId = null,
      _module = {
         start: start
      };
   return _module;

   function locateListView() {
      var fn = function() {
         InitAllClvps();

         // find the CTX for the LVWP
         for(var k in g_ctxDict) {
           if (debug && window.console) console.log(g_ctxDict[k]);
           if (g_ctxDict[k].ListTitle === module.LibraryTitle) {
             wpCtx = window['ctx'+g_ctxDict[k].ctxId];
             break;
           }
         }
         if (debug && window.console) {
            console.log(wpCtx.clvp);
            console.log(wpCtx.clvp.ctx);
            console.log(wpCtx.clvp.ctx.view);
         }
         /* this isn't used in the 2010 version, not figured out if/how to use it yet 
         var clvp = (wpCtx && wpCtx.clvp) ? wpCtx.clvp : null;
         wpEvent = { clvp: clvp, event: { currentCtx: { clvp: clvp } } };
         */
         
         // find the LVWP and table containing the rows
         var 
            $wpnode = $('#'+wpCtx.clvp.wpq).first(),
            $wpTableNode = $wpnode.find("table[id^='onetidDoclibViewTbl']");
         listViewTableId = $wpTableNode.attr('id');

         // find the postback control id; e.g. ctl00$m$g_109629d4_d78b_4c9e_8ec0_90078b6e444e$ctl02
         var
            $wpinput = $wpnode.find('> :first-child > input:first-child'),
            ctrlid = $wpinput.attr('id');
         ctrlid = ctrlid && ctrlid.length
                     ?  ctrlid.replace(/^(ctl\d\d)_/gi,'$1$')
                               .replace(/_g_/g,'$g_')
                               .replace(/_(ctl\d\d)$/gi,'$$$1')
                     : '';
         if (debug && window.console) { console.log(">>locateListView: controlid="+ctrlid); }
         filterControlId = ctrlid;
         viewModel.LibraryTitle(wpCtx.ListTitle);
         viewModel.LibrarySubTitle('All');
         viewModel.Working(false);
      };
      EnsureScript("inplview", typeof InitAllClvps, fn);
   }

   function filterByText() {
      if (!filterControlId) {
         alert('Unable to filter: the list view webpart could not be located or the list view contains a Person/Group column!');
         return;
      }
      var filterText = this.FilterText();
      if (debug && window.console) { console.log(">>FilterByText: ["+filterText+"]"); }

      var $wpTableNode = $("#"+listViewTableId);
      $wpTableNode.find("tr.ms-itmhover").each(function() {
         var $tr = $(this);
         if (filterText && filterText.length) {
             var
                r = new RegExp(filterText,'gi'), 
                matched = false;
            $tr.find(".ms-vb-title,.ms-vb2").each(function() {
               var td = $(this).text();
               if(!r.test(td)) return true;
               matched = true;
               return false;
            });
            if(matched) $tr.fadeIn(250);
            else $tr.fadeOut(250);
         } else {
             $tr.fadeIn(250);
         }
      });
   }

   function onFilterChange(filterType) {
      if (!filterControlId) {
         alert('Unable to filter: the list view webpart could not be located or the list view contains a Person/Group column!');
         return;
      }

      var
         filterColumn = null,
         filterValue = '';

      if (filterType.match(/year/gi)) {
         filterValue = this.SelectedYear();
         filterColumn = 'catYear';
      } else if (filterType.match(/month/gi)) {
         filterValue = this.SelectedMonth();
         filterColumn = 'catMonth';
      }

      if (!filterValue) filterValue = '##dvt_all##';
      var filterCall = "__doPostBack('"+filterControlId+"','NotUTF8;__filter={"+filterColumn+"="+filterValue+"}')"

      if (debug && window.console) {
         console.log(">>Filter by " + filterType + " on ["+filterColumn+"] = ["+filterValue+"]");
         console.log("  >> " + filterCall);
      }
      eval(filterCall);
   }

   function start() {
      ko.applyBindings(viewModel, $('#cdtm').get(0));
      viewModel.FilterText.subscribe(filterByText, viewModel);
      viewModel.SelectedYear.subscribe(onFilterChange.bind(viewModel, 'year'));
      viewModel.SelectedMonth.subscribe(onFilterChange.bind(viewModel, 'month'));

      locateListView();
   }
}();

$(pd.FilterLibraryApp.start);

})({ Name: 'Module', LibraryTitle: 'CDLT Meetings' },jQuery);