/**
* Parse pagination
*/
protected function parsePagination()
{
// init var
$pagination = null;
$showFirstPages = false;
$showLastPages = false;
$useQuestionMark = true;
// validate pagination array
switch (true) {
case !isset($this->pagination['limit']):
throw new FrontendException('no limit in the pagination-property.');
case !isset($this->pagination['offset']):
throw new FrontendException('no offset in the pagination-property.');
case !isset($this->pagination['requested_page']):
throw new FrontendException('no requested_page available in the pagination-property.');
case !isset($this->pagination['num_items']):
throw new FrontendException('no num_items available in the pagination-property.');
case !isset($this->pagination['num_pages']):
throw new FrontendException('no num_pages available in the pagination-property.');
case !isset($this->pagination['url']):
throw new FrontendException('no URL available in the pagination-property.');
}
// should we use a questionmark or an ampersand
if (mb_strpos($this->pagination['url'], '?') !== false) {
$useQuestionMark = false;
}
// no pagination needed
if ($this->pagination['num_pages'] < 1) {
return;
}
// populate count fields
$pagination['num_pages'] = $this->pagination['num_pages'];
$pagination['current_page'] = $this->pagination['requested_page'];
// as long as we are below page 5 we should show all pages starting from 1
if ($this->pagination['requested_page'] < 6) {
// init vars
$pagesStart = 1;
$pagesEnd = $this->pagination['num_pages'] >= 6 ? 6 : $this->pagination['num_pages'];
// show last pages
if ($this->pagination['num_pages'] > 5) {
$showLastPages = true;
}
} elseif ($this->pagination['requested_page'] >= $this->pagination['num_pages'] - 4) {
// as long as we are 5 pages from the end we should show all pages till the end
$pagesStart = $this->pagination['num_pages'] - 5;
$pagesEnd = $this->pagination['num_pages'];
// show first pages
if ($this->pagination['num_pages'] > 5) {
$showFirstPages = true;
}
} else {
// page 7
$pagesStart = $this->pagination['requested_page'] - 2;
$pagesEnd = $this->pagination['requested_page'] + 2;
$showFirstPages = true;
$showLastPages = true;
}
// show previous
if ($this->pagination['requested_page'] > 1) {
// build URL
if ($useQuestionMark) {
$url = $this->pagination['url'] . '?page=' . ($this->pagination['requested_page'] - 1);
} else {
$url = $this->pagination['url'] . '&page=' . ($this->pagination['requested_page'] - 1);
}
// set
$pagination['show_previous'] = true;
$pagination['previous_url'] = $url;
}
// show first pages?
if ($showFirstPages) {
// init var
$pagesFirstStart = 1;
$pagesFirstEnd = 1;
// loop pages
for ($i = $pagesFirstStart; $i <= $pagesFirstEnd; ++$i) {
// build URL
if ($useQuestionMark) {
$url = $this->pagination['url'] . '?page=' . $i;
} else {
$url = $this->pagination['url'] . '&page=' . $i;
}
// add
$pagination['first'][] = array('url' => $url, 'label' => $i);
}
}
// build array
for ($i = $pagesStart; $i <= $pagesEnd; ++$i) {
// init var
$current = $i == $this->pagination['requested_page'];
// build URL
if ($useQuestionMark) {
$url = $this->pagination['url'] . '?page=' . $i;
} else {
$url = $this->pagination['url'] . '&page=' . $i;
}
// add
$pagination['pages'][] = array('url' => $url, 'label' => $i, 'current' => $current);
}
// show last pages?
if ($showLastPages) {
// init var
$pagesLastStart = $this->pagination['num_pages'];
$pagesLastEnd = $this->pagination['num_pages'];
// loop pages
for ($i = $pagesLastStart; $i <= $pagesLastEnd; ++$i) {
// build URL
if ($useQuestionMark) {
$url = $this->pagination['url'] . '?page=' . $i;
} else {
$url = $this->pagination['url'] . '&page=' . $i;
}
// add
$pagination['last'][] = array('url' => $url, 'label' => $i);
}
}
// show next
if ($this->pagination['requested_page'] < $this->pagination['num_pages']) {
// build URL
if ($useQuestionMark) {
$url = $this->pagination['url'] . '?page=' . ($this->pagination['requested_page'] + 1);
} else {
$url = $this->pagination['url'] . '&page=' . ($this->pagination['requested_page'] + 1);
}
// set
$pagination['show_next'] = true;
$pagination['next_url'] = $url;
}
// multiple pages
$pagination['multiple_pages'] = $pagination['num_pages'] == 1 ? false : true;
// assign pagination
$this->tpl->assign('pagination', $pagination);
}
