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ext.paging.js
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ext.paging.js
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var extPagination = DataTable.ext.pager;
function _numbers ( page, pages ) {
var
numbers = [],
buttons = extPagination.numbers_length,
half = Math.floor( buttons / 2 ),
i = 1;
if ( pages <= buttons ) {
numbers = _range( 0, pages );
}
else if ( page <= half ) {
numbers = _range( 0, buttons-2 );
numbers.push( 'ellipsis' );
numbers.push( pages-1 );
}
else if ( page >= pages - 1 - half ) {
numbers = _range( pages-(buttons-2), pages );
numbers.splice( 0, 0, 'ellipsis' ); // no unshift in ie6
numbers.splice( 0, 0, 0 );
}
else {
numbers = _range( page-half+2, page+half-1 );
numbers.push( 'ellipsis' );
numbers.push( pages-1 );
numbers.splice( 0, 0, 'ellipsis' );
numbers.splice( 0, 0, 0 );
}
numbers.DT_el = 'span';
return numbers;
}
$.extend( extPagination, {
simple: function ( page, pages ) {
return [ 'previous', 'next' ];
},
full: function ( page, pages ) {
return [ 'first', 'previous', 'next', 'last' ];
},
numbers: function ( page, pages ) {
return [ _numbers(page, pages) ];
},
simple_numbers: function ( page, pages ) {
return [ 'previous', _numbers(page, pages), 'next' ];
},
full_numbers: function ( page, pages ) {
return [ 'first', 'previous', _numbers(page, pages), 'next', 'last' ];
},
first_last_numbers: function (page, pages) {
return ['first', _numbers(page, pages), 'last'];
},
// For testing and plug-ins to use
_numbers: _numbers,
// Number of number buttons (including ellipsis) to show. _Must be odd!_
numbers_length: 7
} );
$.extend( true, DataTable.ext.renderer, {
pageButton: {
_: function ( settings, host, idx, buttons, page, pages ) {
var classes = settings.oClasses;
var lang = settings.oLanguage.oPaginate;
var aria = settings.oLanguage.oAria.paginate || {};
var btnDisplay, btnClass;
var attach = function( container, buttons ) {
var i, ien, node, button;
var disabledClass = classes.sPageButtonDisabled;
var clickHandler = function ( e ) {
_fnPageChange( settings, e.data.action, true );
};
for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
button = buttons[i];
if ( Array.isArray( button ) ) {
var inner = $( '<'+(button.DT_el || 'div')+'/>' )
.appendTo( container );
attach( inner, button );
}
else {
var disabled = false;
btnDisplay = null;
btnClass = button;
switch ( button ) {
case 'ellipsis':
container.append('<span class="ellipsis">…</span>');
break;
case 'first':
btnDisplay = lang.sFirst;
if ( page === 0 ) {
disabled = true;
}
break;
case 'previous':
btnDisplay = lang.sPrevious;
if ( page === 0 ) {
disabled = true;
}
break;
case 'next':
btnDisplay = lang.sNext;
if ( pages === 0 || page === pages-1 ) {
disabled = true;
}
break;
case 'last':
btnDisplay = lang.sLast;
if ( pages === 0 || page === pages-1 ) {
disabled = true;
}
break;
default:
btnDisplay = settings.fnFormatNumber( button + 1 );
btnClass = page === button ?
classes.sPageButtonActive : '';
break;
}
if ( btnDisplay !== null ) {
var tag = settings.oInit.pagingTag || 'a';
if (disabled) {
btnClass += ' ' + disabledClass;
}
node = $('<'+tag+'>', {
'class': classes.sPageButton+' '+btnClass,
'aria-controls': settings.sTableId,
'aria-disabled': disabled ? 'true' : null,
'aria-label': aria[ button ],
'role': 'link',
'aria-current': btnClass === classes.sPageButtonActive ? 'page' : null,
'data-dt-idx': button,
'tabindex': disabled ? -1 : settings.iTabIndex,
'id': idx === 0 && typeof button === 'string' ?
settings.sTableId +'_'+ button :
null
} )
.html( btnDisplay )
.appendTo( container );
_fnBindAction(
node, {action: button}, clickHandler
);
}
}
}
};
// IE9 throws an 'unknown error' if document.activeElement is used
// inside an iframe or frame. Try / catch the error. Not good for
// accessibility, but neither are frames.
var activeEl;
try {
// Because this approach is destroying and recreating the paging
// elements, focus is lost on the select button which is bad for
// accessibility. So we want to restore focus once the draw has
// completed
activeEl = $(host).find(document.activeElement).data('dt-idx');
}
catch (e) {}
attach( $(host).empty(), buttons );
if ( activeEl !== undefined ) {
$(host).find( '[data-dt-idx='+activeEl+']' ).trigger('focus');
}
}
}
} );