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1
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2 /**
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3 * Generate the node required for the info display
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4 * @param {object} oSettings dataTables settings object
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5 * @returns {node} Information element
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6 * @memberof DataTable#oApi
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7 */
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8 function _fnFeatureHtmlInfo ( oSettings )
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9 {
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10 var nInfo = document.createElement( 'div' );
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11 nInfo.className = oSettings.oClasses.sInfo;
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12
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13 /* Actions that are to be taken once only for this feature */
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14 if ( !oSettings.aanFeatures.i )
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15 {
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16 /* Add draw callback */
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17 oSettings.aoDrawCallback.push( {
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18 "fn": _fnUpdateInfo,
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19 "sName": "information"
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20 } );
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21
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22 /* Add id */
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23 nInfo.id = oSettings.sTableId+'_info';
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24 }
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25 oSettings.nTable.setAttribute( 'aria-describedby', oSettings.sTableId+'_info' );
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26
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27 return nInfo;
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28 }
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29
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30
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31 /**
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32 * Update the information elements in the display
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33 * @param {object} oSettings dataTables settings object
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34 * @memberof DataTable#oApi
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35 */
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36 function _fnUpdateInfo ( oSettings )
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37 {
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38 /* Show information about the table */
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39 if ( !oSettings.oFeatures.bInfo || oSettings.aanFeatures.i.length === 0 )
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40 {
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41 return;
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42 }
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43
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44 var
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45 oLang = oSettings.oLanguage,
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46 iStart = oSettings._iDisplayStart+1,
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47 iEnd = oSettings.fnDisplayEnd(),
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48 iMax = oSettings.fnRecordsTotal(),
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49 iTotal = oSettings.fnRecordsDisplay(),
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50 sOut;
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51
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52 if ( iTotal === 0 )
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53 {
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54 /* Empty record set */
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55 sOut = oLang.sInfoEmpty;
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56 }
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57 else {
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58 /* Normal record set */
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59 sOut = oLang.sInfo;
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60 }
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61
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62 if ( iTotal != iMax )
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63 {
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64 /* Record set after filtering */
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65 sOut += ' ' + oLang.sInfoFiltered;
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66 }
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67
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68 // Convert the macros
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69 sOut += oLang.sInfoPostFix;
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70 sOut = _fnInfoMacros( oSettings, sOut );
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71
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72 if ( oLang.fnInfoCallback !== null )
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73 {
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74 sOut = oLang.fnInfoCallback.call( oSettings.oInstance,
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75 oSettings, iStart, iEnd, iMax, iTotal, sOut );
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76 }
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77
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78 var n = oSettings.aanFeatures.i;
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79 for ( var i=0, iLen=n.length ; i<iLen ; i++ )
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80 {
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81 $(n[i]).html( sOut );
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82 }
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83 }
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84
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85
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86 function _fnInfoMacros ( oSettings, str )
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87 {
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88 var
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89 iStart = oSettings._iDisplayStart+1,
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90 sStart = oSettings.fnFormatNumber( iStart ),
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91 iEnd = oSettings.fnDisplayEnd(),
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92 sEnd = oSettings.fnFormatNumber( iEnd ),
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93 iTotal = oSettings.fnRecordsDisplay(),
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94 sTotal = oSettings.fnFormatNumber( iTotal ),
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95 iMax = oSettings.fnRecordsTotal(),
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96 sMax = oSettings.fnFormatNumber( iMax );
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97
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98 // When infinite scrolling, we are always starting at 1. _iDisplayStart is used only
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99 // internally
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100 if ( oSettings.oScroll.bInfinite )
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101 {
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102 sStart = oSettings.fnFormatNumber( 1 );
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103 }
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104
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105 return str.
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106 replace(/_START_/g, sStart).
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107 replace(/_END_/g, sEnd).
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108 replace(/_TOTAL_/g, sTotal).
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109 replace(/_MAX_/g, sMax);
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110 }
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111
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