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dynamic_pagination.js
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/**
* This pagination plug-in provides multiple navigation types ( Select box, input, or basic navigation )
*
* To set the limits:
*
* 'maxNormalPages' is used for the maximum pages in normal mode
* 'maxSelectPages' is used for the selectbox mode
*
* @name Dynamic input,select list
* @summary Show a `dt-tag select` `dt-tag input` list of pages the user can pick from.
* @author Frank van Os
*
* @example
* $(document).ready(function() {
* $('#example').dataTable( {
* "sPaginationType": "dynamic_pagination"
* } );
* } );
*/
$.fn.dataTableExt.oPagination.dynamic_pagination = {
'maxNormalPages': 10,
'maxSelectPages': 20,
'bootstrapTooltip': false,
'fnClickHandler': function(e) {
var fnCallbackDraw = e.data.fnCallbackDraw,
oSettings = e.data.oSettings,
sPage = e.data.sPage;
if ($(this).is(':disabled')) {
return false;
}
oSettings.oApi._fnPageChange(oSettings, sPage);
fnCallbackDraw(oSettings);
return true;
},
/*
* Function: oPagination.dynamic_pagination.fnInit
* Purpose: Initalise dom elements required for pagination with listbox input
* Returns: -
* Inputs: object:oSettings - dataTables settings object
* node:nPaging - the DIV which contains this pagination control
* function:fnCallbackDraw - draw function which must be called on update
*/
"fnInit": function (oSettings, nPaging, fnCallbackDraw) {
if (oSettings.sTableId !== '') {
$(nPaging).attr('id', oSettings.sTableId + '_paginate');
}
var oClasses = oSettings.oClasses,
oLang = oSettings.oLanguage.oPaginate;
var PagingHolder = $('<ul/>').addClass('pagination');
var nInputText = $('<input/>').attr('type','text').css('display','none');
var nInputSelect = $('<select/>').css('display','none').addClass('form-control');
var nFirst = $('<li/>').addClass(oClasses.sPageButton+' first').html($('<a/>').attr('href','#').text(oLang.sFirst));
var nNext = $('<li/>').addClass(oClasses.sPageButton+' next').html($('<a/>').attr('href','#').text(oLang.sNext));
var nInput = $('<li/>').attr('id',oSettings.sTableId+'_pagination_controls').addClass(oClasses.sPageButton).append(nInputText,nInputSelect);
var nPrev = $('<li/>').addClass(oClasses.sPageButton+' previous').html($('<a/>').attr('href','#').text(oLang.sPrevious));
var nLast = $('<li/>').addClass(oClasses.sPageButton+' last').html($('<a/>').attr('href','#').text(oLang.sLast));
$(PagingHolder).append(nFirst, nPrev, nInput, nNext, nLast).appendTo(nPaging);
$(nPaging).on('click','li:not(#'+oSettings.sTableId+'_pagination_controls) a',function (event) {
if(!$(this).parent('li').hasClass('disabled')){
var nav = $(this).parent('li').attr('class').split(' ').pop();
if($.inArray(nav,['first','last','previous','next']) !== -1){
oSettings.oApi._fnPageChange( oSettings, nav );
fnCallbackDraw( oSettings );
}
}
event.preventDefault();
} );
function updatePage(element){
if (element.val() === '' || element.val().match(/[^0-9]/)) {
/* Nothing entered or non-numeric character */
return;
}
var iNewStart = oSettings._iDisplayLength * (element.val() - 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);
}
$(nInputText).keypress(function (e) {
// On return navigate to given page
if(e.which === 13){
updatePage($(this));
}
});
$(nInputSelect).change(function (e) { // Set DataTables page property and redraw the grid on listbox change event.
updatePage($(this));
});
/* Disallow text selection */
$('li.first,li.next,li.previous,li.last').bind( 'selectstart', function (evt) { evt.preventDefault(); } );
},
/*
* Function: oPagination.listbox.fnUpdate
* Purpose: Update the listbox element
* Returns: -
* Inputs: object:oSettings - dataTables settings object
* function:fnCallbackDraw - draw function which must be called on update
*/
"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 paging = oSettings.aanFeatures.p;
var oClasses = oSettings.oClasses;
var info = oSettings.aanFeatures.i;
var that = this;
for (var i = 0, iLen = paging.length; i < iLen; i++) {
if ( oSettings._iDisplayStart === 0 ){
$(paging).find('.first').attr('class',"paginate_button disabled first");
$(paging).find('.previous').attr('class',"paginate_button disabled previous");
}
else {
$(paging).find('.first').attr('class',"paginate_button first");
$(paging).find('.previous').attr('class',"paginate_button previous");
}
if ( oSettings.fnDisplayEnd() == oSettings.fnRecordsDisplay() ){
$(paging).find('.next').attr('class',"paginate_button disabled next");
$(paging).find('.last').attr('class',"paginate_button disabled last");
}
else{
$(paging).find('.next').attr('class',"paginate_button next");
$(paging).find('.last').attr('class',"paginate_button last");
}
// Hide pagination block and info block
$(paging).hide();
$(info).hide();
if(iPages <= that.maxNormalPages){
$(paging).find('select,input').css('display','none');
// Erase
$('#'+oSettings.sTableId+'_pagination_controls').find('a.paginate_button').remove();
for (var j = 0; j < iPages; j++) { //add the pages
var oNumber = $('<a/>',{
'class': oClasses.sPageButton,
'aria-controls': oSettings.sTableId,
'data-dt-idx': j,
'tabindex': oSettings.iTabIndex
}).text( oSettings.fnFormatNumber(j+1) );
if (iCurrentPage === j+1) {
oNumber.addClass('active').attr('disabled', true);
} else {
oNumber.click({ 'fnCallbackDraw': fnCallbackDraw, 'oSettings': oSettings, 'sPage': j }, that.fnClickHandler);
}
$(oNumber).appendTo('#'+oSettings.sTableId+'_pagination_controls');
}
}
else if(iPages > that.maxNormalPages && iPages <= that.maxSelectPages) {
// Erase
$('#'+oSettings.sTableId+'_pagination_controls').find('a.paginate_button').remove();
var input = $(paging).find('select');
input.css('display','inline');
if(oSettings._iDisplayStart === 0 && oSettings.fnDisplayEnd() == oSettings.fnRecordsDisplay()){
input.attr('disabled','disabled').attr('class','form-control disabled');
}
else{
input
.removeAttr('disabled','disabled')
.attr('class','form-control');
}
input.empty();
for (var j = 0; j < iPages; j++) { //add the pages
input.append($('<option>', {value:j+1,text:j+1}));
}
input.val(iCurrentPage);
$(paging).find('input').css('display','none');
}
else if(iPages > that.maxNormalPages && iPages > that.maxSelectPages){
// Remove paging buttons
$('#'+oSettings.sTableId+'_pagination_controls').find('a.paginate_button').remove();
var input = $(paging).find('input');
input.css('display','inline');
if(that.bootstrapTooltip){
input.attr('data-original-title','Max. page number: '+Math.ceil(oSettings.fnRecordsDisplay() / oSettings._iDisplayLength));
input.tooltip({
container: '.pagination',
placement: 'top'
});
}
input.val(iCurrentPage);
$(paging).find('select').css('display','none');
}
// When there are pages show pagination block and info block
$(paging).show();
$(info).show();
}
}
};