var $page = 0;// 0 means no pagination
var $firstitem = 1;
var $lastitem = 999999;
- var $topcount;
var $pagecount;
+ var $paged = false;
+ var $offset = 0;
//------------------------------------------------------
var $pageurl;
var $pageparamname;
* @param string $type
* @param string $attributes
* @param boolean $editable
- * @param integer $page if 0 no pagination.
- * @param moodle_url $page if 0 no pagination.
+ * @param moodle_url $pageurl url for this page
+ * @param integer $page if 0 no pagination. (These three params only used in top level list.)
+ * @param string $pageparamname name of url param that is used for passing page no
+ * @param integer $itemsperpage no of top level items.
* @return moodle_list
*/
- function moodle_list($type='ul', $attributes='', $editable = false, $page = 0, $pageurl=null, $pageparamname = 'page'){
+ function moodle_list($type='ul', $attributes='', $editable = false, $pageurl=null, $page = 0, $pageparamname = 'page', $itemsperpage = 20){
$this->editable = $editable;
$this->attributes = $attributes;
$this->type = $type;
$this->page = $page;
$this->pageparamname = $pageparamname;
-
+ $this->itemsperpage = $itemsperpage;
if ($pageurl === null){
$this->pageurl = new moodle_url();
$this->pageurl->params(array($this->pageparamname => $this->page));
function to_html($indent=0, $extraargs=array()){
if (count($this->items)){
$tabs = str_repeat("\t", $indent);
- $html = $tabs.'<'.$this->type.((!empty($this->attributes))?(' '.$this->attributes):'').">\n";
$first = true;
$itemiter = 1;
$lastitem = '';
+ $html = '';
foreach ($this->items as $item){
$last = (count($this->items) == $itemiter);
- if ($itemiter >= $this->firstitem && $itemiter <= $this->lastitem ){
- if ($this->editable){
- $item->set_icon_html($first, $last, $lastitem);
- }
+ if ($this->editable){
+ $item->set_icon_html($first, $last, $lastitem);
+ }
+ if ($itemhtml = $item->to_html($indent+1, $extraargs)){
$html .= "$tabs\t<li".((!empty($item->attributes))?(' '.$item->attributes):'').">";
- $html .= $item->to_html($indent+1, $extraargs);
+ $html .= $itemhtml;
$html .= "</li>\n";
}
$first = false;
$lastitem = $item;
$itemiter++;
}
- $html .= $tabs."</".$this->type.">\n";
} else {
$html = '';
}
+ if ($html){ //if there are list items to display then wrap them in ul / ol tag.
+ $tabs = str_repeat("\t", $indent);
+ $html = $tabs.'<'.$this->type.((!empty($this->attributes))?(' '.$this->attributes):'').">\n".$html;
+ $html .= $tabs."</".$this->type.">\n";
+ } else {
+ $html ='';
+ }
return $html;
}
* Recurse down the tree and find an item by it's id.
*
* @param integer $id
+ * @param boolean $suppresserror error if not item found?
* @return list_item *copy* or null if item is not found
*/
function find_item($id, $suppresserror = false){
function set_parent(&$parent){
$this->parentitem =& $parent;
}
-
+
/**
* Produces a hierarchical tree of list items from a flat array of records.
* records are already sorted.
* If the parent field doesn't point to another record in the array then this is
* a top level list
- *
- * @param array $records
- * @param string $listitemclassname
- * @param integer $itemsperpage no of top level items.
+ *
+ * @param integer $offset how many list toplevel items are there in lists before this one
+ * @return integer $offset + how many toplevel items where there in this list.
+ *
*/
- function list_from_records($itemsperpage = 25){
+ function list_from_records($paged = false, $offset =0){
+ $this->paged = $paged;
+ $this->offset = $offset;
$this->get_records();
$records = $this->records;
$page = $this->page;
if (!empty($page)) {
- $this->firstitem = ($page-1) * $itemsperpage + 1;
- $this->lastitem = $this->firstitem + $itemsperpage - 1;
+
+ $this->firstitem = ($page-1) * $this->itemsperpage + 1;
+ $this->lastitem = $this->firstitem + $this->itemsperpage - 1;
}
- $itemiter = 1;
+ $itemiter = $offset;
//make a simple array which is easier to search
$this->childparent = array();
foreach ($records as $record){
if (!array_key_exists($record->parent, $this->childparent)){
//if this record is not a child of another record then
+ $inpage = ($itemiter >= $this->firstitem && $itemiter <= $this->lastitem);
//make list item for top level for all items
//we need the info about the top level items for reordering peers.
- $newlistitem =& new $this->listitemclassname($record, $this);
- if ($itemiter >= $this->firstitem && $itemiter <= $this->lastitem ){
+ if ($this->parentitem!==null){
+ $newattributes = $this->parentitem->attributes;
+ } else {
+ $newattributes = '';
+
+ }
+ $newlistitem =& new $this->listitemclassname($record, $this, $newattributes, $inpage);
+ if ($inpage){
//but don't recurse down the tree for items that are not on this page
$newlistitem->create_children($records, $this->childparent, $record->id);
+ } else {
+ $this->paged = true;
}
$itemiter++;
}
}
- $this->topcount = $itemiter - 1;
- $this->pagecount = (integer) ceil( $this->topcount / QUESTION_PAGE_LENGTH );
+ return array($this->paged, $itemiter);
}
/**
* display list of page numbers for navigation
*/
function display_page_numbers() {
- if (!empty($this->page) && ($this->pagecount>1)){
- echo "<div class=\"paging\">".get_string('page').":\n";
+ $html = '';
+ $topcount = count($this->items);
+ $this->pagecount = (integer) ceil(($topcount + $this->offset)/ QUESTION_PAGE_LENGTH );
+ if (!empty($this->page) && ($this->paged)){
+ $html = "<div class=\"paging\">".get_string('page').":\n";
foreach (range(1,$this->pagecount) as $currentpage) {
if ($this->page == $currentpage) {
- echo " $currentpage \n";
+ $html .= " $currentpage \n";
}
else {
-
echo "<a href=\"".$this->pageurl->out(false, array($this->pageparamname => $currentpage))."\">";
- echo " $currentpage </a>\n";
+
$html .= "<a href=\"".$this->pageurl->out(false, array($this->pageparamname => $currentpage))."\">";
+ $html .= " $currentpage </a>\n";
}
}
- echo "</div>";
+ $html .= "</div>";
}
+ return $html;
}
/**
var $item;
var $fieldnamesname = 'name';
var $attributes;
+ var $display;
var $icons = array();
/**
*
* Constructor
*
* @param mixed $item fragment of html for list item or record
+ * @param object &$parent reference to parent of this item
* @param string $attributes attributes for li tag
+ * @param boolean $display whether this item is displayed. Some items may be loaded so we have a complete
+ * structure in memory to work with for actions but are not displayed.
* @return list_item
*/
- function list_item($item, &$parent, $attributes=''){
+ function list_item($item, &$parent, $attributes='', $display = true){
$this->item = $item;
if (is_object($this->item)) {
$this->id = $this->item->id;
$this->set_parent($parent);
$this->attributes = $attributes;
$parentlistclass = get_class($parent);
- $this->children =& new $parentlistclass($parent->type, $parent->attributes, $parent->editable, $parent->page, $parent->pageurl, $parent->pageparamname);
+ $this->children =& new $parentlistclass($parent->type, $parent->attributes, $parent->editable, $parent->pageurl, 0);
$this->children->set_parent($this);
+ $this->display = $display;
}
/**
* Output the html just for this item. Called by to_html which adds html for children.
* @return string html
*/
function to_html($indent=0, $extraargs = array()){
+ if (!$this->display){
+ return '';
+ }
$tabs = str_repeat("\t", $indent);
if (isset($this->children)){
}
if (!$first) {
- $icons['up'] = $this->image_icon($strmoveup, $this->parentlist->pageurl->out_action(array('up'=>$this->id)), 'up');
+ $icons['up'] = $this->image_icon($strmoveup, $this->parentlist->pageurl->out_action(array('moveup'=>$this->id)), 'up');
} else {
$icons['up'] = $this->image_spacer();
}
function image_icon($action, $url, $icon){
global $CFG;
$pixpath = $CFG->pixpath;
- return '<a title="' . $action .'" href="'.$this->parentlist->pageurl->out_action(array('left'=>$this->id)).'">
+ return '<a title="' . $action .'" href="'.$url.'">
<img src="' . $pixpath . '/t/'.$icon.'.gif" class="iconsmall" alt="' . $action. '" /></a> ';
}
function image_spacer(){
projects / moodle.git / commitdiff