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|
;(function($){
alert('ok-start paginate');
$.fn.pajinate = function(options){
// Set some state information
var current_page = 'current_page';
var items_per_page = 'items_per_page';
var meta;
// Setup default option values
var defaults = {
item_container_id : '.content',
items_per_page : 1,
nav_panel_id : '.page_navigation',
num_page_links_to_display : 20,
start_page : 0,
nav_label_first : 'Debut',
nav_label_prev : 'Precedent',
nav_label_next : 'Suivant',
nav_label_last : 'Fin'
};
var options = $.extend(defaults,options);
var $item_container;
var $page_container;
var $items;
var $nav_panels;
alert('ok all var1');
return this.each(function(){
alert('ok-info chargees2');
$page_container = $(this);
alert('ok-info chargees3');
$item_container = $(this).find(options.item_container_id);
alert('ok-info chargees4');
$items = $page_container.find(options.item_container_id).children();
alert('ok-info chargees');
meta = $page_container;
// Initialise meta data
meta.data(current_page,0);
meta.data(items_per_page, options.items_per_page);
// Get the total number of items
var total_items = $item_container.children().size();
// Calculate the number of pages needed
var number_of_pages = Math.ceil(total_items/options.items_per_page);
alert('ok-calculs effectues');
// Construct the nav bar
var more = '<span class="ellipse more">...</span>';
var less = '<span class="ellipse less">...</span>';
var navigation_html = '<a class="first_link" href="">'+ options.nav_label_first +'</a>';
navigation_html += '<a class="previous_link" href="">'+ options.nav_label_prev +'</a>'+ less;
var current_link = 0;
while(number_of_pages > current_link){
navigation_html += '<a class="page_link" href="" longdesc="' + current_link +'">'+ (current_link + 1) +'</a>';
current_link++;
}
navigation_html += more + '<a class="next_link" href="">'+ options.nav_label_next +'</a>';
navigation_html += '<a class="last_link" href="">'+ options.nav_label_last +'</a>';
// And add it to the appropriate area of the DOM
$nav_panels = $page_container.find(options.nav_panel_id);
$nav_panels.html(navigation_html).each(function(){
$(this).find('.page_link:first').addClass('first');
$(this).find('.page_link:last').addClass('last');
});
// Hide the more/less indicators
$nav_panels.children('.ellipse').hide();
// Set the active page link styling
$nav_panels.find('.previous_link').next().next().addClass('active_page');
/* Setup Page Display */
// And hide all pages
$items.hide();
// Show the first page
$items.slice(0, meta.data(items_per_page)).show();
/* Setup Nav Menu Display */
// Page number slices
var total_page_no_links = $page_container.children(options.nav_panel_id+':first').children('.page_link').size();
options.num_page_links_to_display = Math.min(options.num_page_links_to_display,total_page_no_links);
$nav_panels.children('.page_link').hide(); // Hide all the page links
// And only show the number we should be seeing
$nav_panels.each(function(){
$(this).children('.page_link').slice(0, options.num_page_links_to_display).show();
});
/* Bind the actions to their respective links */
// Event handler for 'First' link
$page_container.find('.first_link').click(function(e){
e.preventDefault();
movePageNumbersRight($(this),0);
goto(0);
});
// Event handler for 'Last' link
$page_container.find('.last_link').click(function(e){
e.preventDefault();
var lastPage = total_page_no_links - 1;
movePageNumbersLeft($(this),lastPage);
goto(lastPage);
});
// Event handler for 'Prev' link
$page_container.find('.previous_link').click(function(e){
e.preventDefault();
showPrevPage($(this));
});
// Event handler for 'Next' link
$page_container.find('.next_link').click(function(e){
e.preventDefault();
showNextPage($(this));
});
// Event handler for each 'Page' link
$page_container.find('.page_link').click(function(e){
e.preventDefault();
goto($(this).attr('longdesc'));
});
// Goto the required page
goto(parseInt(options.start_page));
toggleMoreLess();
});
function showPrevPage(e){
new_page = parseInt(meta.data(current_page)) - 1;
// Check that we aren't on a boundary link
if($(e).siblings('.active_page').prev('.page_link').length==true){
movePageNumbersRight(e,new_page);
goto(new_page);
}
};
function showNextPage(e){
new_page = parseInt(meta.data(current_page)) + 1;
// Check that we aren't on a boundary link
if($(e).siblings('.active_page').next('.page_link').length==true){
movePageNumbersLeft(e,new_page);
goto(new_page);
}
};
function goto(page_num){
var ipp = meta.data(items_per_page);
var isLastPage = false;
// Find the start of the next slice
start_from = page_num * ipp;
// Find the end of the next slice
end_on = start_from + ipp;
// Hide the current page
$items.hide()
.slice(start_from, end_on)
.show();
// Reassign the active class
$page_container.find(options.nav_panel_id).children('.page_link[longdesc=' + page_num +']').addClass('active_page')
.siblings('.active_page')
.removeClass('active_page');
// Set the current page meta data
meta.data(current_page,page_num);
// Hide the more and/or less indicators
toggleMoreLess();
};
// Methods to shift the diplayed index of page numbers to the left or right
function movePageNumbersLeft(e, new_p){
var new_page = new_p;
var $current_active_link = $(e).siblings('.active_page');
if($current_active_link.siblings('.page_link[longdesc=' + new_page +']').css('display') == 'none'){
$nav_panels.each(function(){
$(this).children('.page_link')
.hide() // Hide all the page links
.slice(parseInt(new_page - options.num_page_links_to_display + 1) , new_page + 1)
.show();
});
}
}
function movePageNumbersRight(e, new_p){
var new_page = new_p;
var $current_active_link = $(e).siblings('.active_page');
if($current_active_link.siblings('.page_link[longdesc=' + new_page +']').css('display') == 'none'){
$nav_panels.each(function(){
$(this).children('.page_link')
.hide() // Hide all the page links
.slice( new_page , new_page + parseInt(options.num_page_links_to_display))
.show();
});
}
}
// Show or remove the ellipses that indicate that more page numbers exist in the page index than are currently shown
function toggleMoreLess(){
if(!$nav_panels.children('.page_link:visible').hasClass('last')){
$nav_panels.children('.more').show();
}else {
$nav_panels.children('.more').hide();
}
if(!$nav_panels.children('.page_link:visible').hasClass('first')){
$nav_panels.children('.less').show();
}else {
$nav_panels.children('.less').hide();
}
}
};
})(jQuery); |
