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show only limited number of entries, fetch more when scrolling down

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This commit is contained in:
Uwe Steinmann 2017-12-14 09:39:43 +01:00
parent dec3b44123
commit 9a6786cc8d
2 changed files with 135 additions and 14 deletions
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12
out/out.ViewFolder.php
View File

@ -48,6 +48,14 @@ if (isset($_GET["orderby"]) && strlen($_GET["orderby"])==1 ) {
$orderby=$_GET["orderby"];
} else $orderby=$settings->_sortFoldersDefault;
if (!empty($_GET["offset"])) {
$offset=(int) $_GET["offset"];
} else $offset = 0;
if (!empty($_GET["limit"])) {
$limit=(int) $_GET["limit"];
} else $limit = 10;
if ($folder->getAccessMode($user) < M_READ) {
UI::exitError(getMLText("folder_title", array("foldername" => htmlspecialchars($folder->getName()))),getMLText("access_denied"));
}
@ -66,6 +74,10 @@ if($view) {
$view->setParam('maxRecursiveCount', $settings->_maxRecursiveCount);
$view->setParam('previewWidthList', $settings->_previewWidthList);
$view->setParam('timeout', $settings->_cmdTimeout);
$view->setParam('maxItemsPerPage', $settings->_maxItemsPerPage);
$view->setParam('incItemsPerPage', $settings->_incItemsPerPage != 0 ? $settings->_incItemsPerPage : $settings->_maxItemsPerPage);
$view->setParam('offset', $offset);
$view->setParam('limit', $limit);
$view($_GET);
exit;
}

137
views/bootstrap/class.ViewFolder.php
View File

@ -96,6 +96,37 @@ class SeedDMS_View_ViewFolder extends SeedDMS_Bootstrap_Style {
function folderSelected(id, name) {
window.location = '../out/out.ViewFolder.php?folderid=' + id;
}
function loadMoreObjects(element, limit) {
if(!$(element).is(":visible"))
return;
var folder = element.data('folder')
var offset = element.data('offset')
// var limit = element.data('limit')
url = seeddms_webroot+"out/out.ViewFolder.php?action=entries&folderid="+folder+"&offset="+offset+"&limit="+limit;
$.ajax({
type: 'GET',
url: url,
dataType: 'json',
success: function(data){
$('#viewfolder-table').append(data.html);
console.log(data.count);
if(data.count <= 0) {
element.hide();
} else {
element.text(data.count+" more objects");
element.data('offset', offset+limit);
}
}
});
}
$(window).scroll(function() {
if($(window).scrollTop() + $(window).height() == $(document).height()) {
loadMoreObjects($('#loadmore'), $('#loadmore').data('limit'));
}
});
$('#loadmore').click(function(e) {
loadMoreObjects($(this), $(this).data('all'));
});
<?php
$this->printNewTreeNavigationJs($folder->getID(), M_READ, 0, '', $expandFolderTree == 2, $orderby);
@ -111,6 +142,71 @@ function folderSelected(id, name) {
$this->printDeleteDocumentButtonJs();
} /* }}} */
function entries() { /* {{{ */
$dms = $this->params['dms'];
$user = $this->params['user'];
$folder = $this->params['folder'];
$orderby = $this->params['orderby'];
$cachedir = $this->params['cachedir'];
$previewwidth = $this->params['previewWidthList'];
$timeout = $this->params['timeout'];
$offset = $this->params['offset'];
$limit = $this->params['limit'];
header('Content-Type: application/json');
$previewer = new SeedDMS_Preview_Previewer($cachedir, $previewwidth, $timeout);
$subFolders = $folder->getSubFolders($orderby);
$subFolders = SeedDMS_Core_DMS::filterAccess($subFolders, $user, M_READ);
$documents = $folder->getDocuments($orderby);
$documents = SeedDMS_Core_DMS::filterAccess($documents, $user, M_READ);
$content = '';
if ((count($subFolders) > 0)||(count($documents) > 0)){
$i = 0; // counts all entries
$j = 0; // counts only returned entries
foreach($subFolders as $subFolder) {
if($i >= $offset && $j < $limit) {
$txt = $this->callHook('folderListItem', $subFolder, 'viewfolder');
if(is_string($txt))
$content .= $txt;
else {
$content .= $this->folderListRow($subFolder);
}
$j++;
}
$i++;
}
if($subFolders && $documents) {
if(($j && $j < $limit) || ($offset + $limit == $i)) {
$txt = $this->callHook('folderListSeparator', $folder);
if(is_string($txt))
$content .= $txt;
else $content .= "<tr><td colspan=\"4\">kkkkk</td></tr>";
}
}
foreach($documents as $document) {
if($i >= $offset && $j < $limit) {
$document->verifyLastestContentExpriry();
$txt = $this->callHook('documentListItem', $document, $previewer, 'viewfolder');
if(is_string($txt))
$content .= $txt;
else {
$content .= $this->documentListRow($document, $previewer);
}
$j++;
}
$i++;
}
echo json_encode(array('error'=>0, 'count'=>$i-($offset+$limit), 'html'=>$content));
}
} /* }}} */
function show() { /* {{{ */
$dms = $this->params['dms'];
$user = $this->params['user'];
@ -125,6 +221,8 @@ function folderSelected(id, name) {
$workflowmode = $this->params['workflowmode'];
$enableRecursiveCount = $this->params['enableRecursiveCount'];
$maxRecursiveCount = $this->params['maxRecursiveCount'];
$maxItemsPerPage = $this->params['maxItemsPerPage'];
$incItemsPerPage = $this->params['incItemsPerPage'];
$previewwidth = $this->params['previewWidthList'];
$timeout = $this->params['timeout'];
@ -289,6 +387,7 @@ function folderSelected(id, name) {
$documents = $folder->getDocuments($orderby);
$documents = SeedDMS_Core_DMS::filterAccess($documents, $user, M_READ);
$i = 0;
if ((count($subFolders) > 0)||(count($documents) > 0)){
$txt = $this->callHook('folderListHeader', $folder, $orderby);
if(is_string($txt))
@ -306,28 +405,36 @@ function folderSelected(id, name) {
}
foreach($subFolders as $subFolder) {
$txt = $this->callHook('folderListItem', $subFolder, 'viewfolder');
if(is_string($txt))
echo $txt;
else {
echo $this->folderListRow($subFolder);
if(!$maxItemsPerPage || $i < $maxItemsPerPage) {
$txt = $this->callHook('folderListItem', $subFolder, 'viewfolder');
if(is_string($txt))
echo $txt;
else {
echo $this->folderListRow($subFolder);
}
}
$i++;
}
if($subFolders && $documents) {
$txt = $this->callHook('folderListSeparator', $folder);
if(is_string($txt))
echo $txt;
if(!$maxItemsPerPage || $maxItemsPerPage > count($subFolders)) {
$txt = $this->callHook('folderListSeparator', $folder);
if(is_string($txt))
echo $txt;
}
}
foreach($documents as $document) {
$document->verifyLastestContentExpriry();
$txt = $this->callHook('documentListItem', $document, $previewer, 'viewfolder');
if(is_string($txt))
echo $txt;
else {
echo $this->documentListRow($document, $previewer);
if(!$maxItemsPerPage || $i < $maxItemsPerPage) {
$document->verifyLastestContentExpriry();
$txt = $this->callHook('documentListItem', $document, $previewer, 'viewfolder');
if(is_string($txt))
echo $txt;
else {
echo $this->documentListRow($document, $previewer);
}
}
$i++;
}
$txt = $this->callHook('folderListFooter', $folder);
@ -336,6 +443,8 @@ function folderSelected(id, name) {
else
echo "</tbody>\n</table>\n";
if($maxItemsPerPage && $i > $maxItemsPerPage)
echo "<button id=\"loadmore\" style=\"width: 100%; margin-bottom: 20px;\" class=\"btn btn-default\" data-folder=\"".$folder->getId()."\"data-offset=\"".$maxItemsPerPage."\" data-limit=\"".$incItemsPerPage."\" data-all=\"".($i-$maxItemsPerPage)."\">".($i-$maxItemsPerPage)." more objects</button>";
}
else printMLText("empty_folder_list");