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Plugins/pagination/input.js

141 lines
4.3 KiB
JavaScript

/**
* Sometimes for quick navigation, it can be useful to allow an end user to
* enter which page they wish to jump to manually. This paging control uses a
* text input box to accept new paging numbers (arrow keys are also allowed
* for), and four standard navigation buttons are also presented to the end
* user.
* @name Navigation with text input
13 years ago
* @anchor text_input
* @author <a href="http://sprymedia.co.uk">Allan Jardine</a>
*
* @example
* $(document).ready(function() {
* $('#example').dataTable( {
* "sPaginationType": "input"
* } );
* } );
*/
$.fn.dataTableExt.oPagination.input = {
"fnInit": function ( oSettings, nPaging, fnCallbackDraw )
{
var nFirst = document.createElement( 'span' );
var nPrevious = document.createElement( 'span' );
var nNext = document.createElement( 'span' );
var nLast = document.createElement( 'span' );
var nInput = document.createElement( 'input' );
var nPage = document.createElement( 'span' );
var nOf = document.createElement( 'span' );
nFirst.innerHTML = oSettings.oLanguage.oPaginate.sFirst;
nPrevious.innerHTML = oSettings.oLanguage.oPaginate.sPrevious;
nNext.innerHTML = oSettings.oLanguage.oPaginate.sNext;
nLast.innerHTML = oSettings.oLanguage.oPaginate.sLast;
nFirst.className = "paginate_button first";
nPrevious.className = "paginate_button previous";
nNext.className="paginate_button next";
nLast.className = "paginate_button last";
nOf.className = "paginate_of";
nPage.className = "paginate_page";
if ( oSettings.sTableId !== '' )
{
nPaging.setAttribute( 'id', oSettings.sTableId+'_paginate' );
nPrevious.setAttribute( 'id', oSettings.sTableId+'_previous' );
nPrevious.setAttribute( 'id', oSettings.sTableId+'_previous' );
nNext.setAttribute( 'id', oSettings.sTableId+'_next' );
nLast.setAttribute( 'id', oSettings.sTableId+'_last' );
}
nInput.type = "text";
nInput.style.width = "15px";
nInput.style.display = "inline";
nPage.innerHTML = "Page ";
nPaging.appendChild( nFirst );
nPaging.appendChild( nPrevious );
nPaging.appendChild( nPage );
nPaging.appendChild( nInput );
nPaging.appendChild( nOf );
nPaging.appendChild( nNext );
nPaging.appendChild( nLast );
$(nFirst).click( function () {
oSettings.oApi._fnPageChange( oSettings, "first" );
fnCallbackDraw( oSettings );
} );
$(nPrevious).click( function() {
oSettings.oApi._fnPageChange( oSettings, "previous" );
fnCallbackDraw( oSettings );
} );
$(nNext).click( function() {
oSettings.oApi._fnPageChange( oSettings, "next" );
fnCallbackDraw( oSettings );
} );
$(nLast).click( function() {
oSettings.oApi._fnPageChange( oSettings, "last" );
fnCallbackDraw( oSettings );
} );
$(nInput).keyup( function (e) {
if ( e.which == 38 || e.which == 39 )
{
this.value++;
}
else if ( (e.which == 37 || e.which == 40) && this.value > 1 )
{
this.value--;
}
if ( this.value == "" || this.value.match(/[^0-9]/) )
{
/* Nothing entered or non-numeric character */
return;
}
var iNewStart = oSettings._iDisplayLength * (this.value - 1);
if ( iNewStart > oSettings.fnRecordsDisplay() )
{
/* Display overrun */
oSettings._iDisplayStart = (Math.ceil((oSettings.fnRecordsDisplay()-1) /
oSettings._iDisplayLength)-1) * oSettings._iDisplayLength;
fnCallbackDraw( oSettings );
return;
}
oSettings._iDisplayStart = iNewStart;
fnCallbackDraw( oSettings );
} );
/* Take the brutal approach to cancelling text selection */
$('span', nPaging).bind( 'mousedown', function () { return false; } );
$('span', nPaging).bind( 'selectstart', function () { return false; } );
},
"fnUpdate": function ( oSettings, fnCallbackDraw )
{
if ( !oSettings.aanFeatures.p )
{
return;
}
var iPages = Math.ceil((oSettings.fnRecordsDisplay()) / oSettings._iDisplayLength);
var iCurrentPage = Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength) + 1;
/* Loop over each instance of the pager */
var an = oSettings.aanFeatures.p;
for ( var i=0, iLen=an.length ; i<iLen ; i++ )
{
var spans = an[i].getElementsByTagName('span');
var inputs = an[i].getElementsByTagName('input');
spans[3].innerHTML = " of "+iPages
inputs[0].value = iCurrentPage;
}
}
};