#44 angeltypes recreated

8 files changed, 314 insertions, 110 deletions

diff --git a/includes/pages/admin_angel_types.php b/includes/pages/admin_angel_types.php
index 0a7a721c..f9c39ebf 100644
--- a/includes/pages/admin_angel_types.php
+++ b/includes/pages/admin_angel_types.php
@@ -1,96 +1,105 @@
 <?php
-
 function admin_angel_types() {
-	$html = "";
-	if (!isset ($_REQUEST['action'])) {
-
-		$table = "";
-		$angel_types = sql_select("SELECT * FROM `AngelTypes` ORDER BY `Name`");
-
-		foreach ($angel_types as $angel_type)
-			$table .= sprintf(
-				  '<tr><td>%s</td><td>%s</td><td>'
-				. '<a href="%s&action=edit&id=%s">Edit</a></td></tr>',
-				$angel_type['Name'], $angel_type['Man'],
-				page_link_to("admin_angel_types"),
-				$angel_type['TID']
-			);
-
-		$html .= template_render('../templates/admin_angel_types.html', array (
-			'link' => page_link_to("admin_angel_types"),
-			'table' => $table
-		));
-
-	} else {
-
-		switch ($_REQUEST['action']) {
-
-			case 'create' :
-				$name = strip_request_item("name");
-				$man = strip_request_item("man");
-
-				sql_query("INSERT INTO `AngelTypes` SET `Name`='" . sql_escape($name) . "', `Man`='" . sql_escape($man) . "'");
-
-				header("Location: " . page_link_to("admin_angel_types"));
-				break;
-
-			case 'edit' :
-				if (isset ($_REQUEST['id']) && preg_match("/^[0-9]{1,11}$/", $_REQUEST['id']))
-					$id = $_REQUEST['id'];
-				else
-					return error("Incomplete call, missing AngelType ID.");
-
-				$angel_type = sql_select("SELECT * FROM `AngelTypes` WHERE `TID`=" . sql_escape($id) . " LIMIT 1");
-				if (count($angel_type) > 0) {
-					list ($angel_type) = $angel_type;
-
-					$html .= template_render(
-						'../templates/admin_angel_types_edit_form.html', array (
-							'link' => page_link_to("admin_angel_types"),
-							'id' => $id,
-							'name' => $angel_type['Name'],
-							'man' => $angel_type['Man']
-					));
-				} else
-					return error("No Angel Type found.");
-				break;
-
-			case 'save' :
-				if (isset ($_REQUEST['id']) && preg_match("/^[0-9]{1,11}$/", $_REQUEST['id']))
-					$id = $_REQUEST['id'];
-				else
-					return error("Incomplete call, missing AngelType ID.");
-
-				$angel_type = sql_select("SELECT * FROM `AngelTypes` WHERE `TID`=" . sql_escape($id) . " LIMIT 1");
-				if (count($angel_type) > 0) {
-					list ($angel_type) = $angel_type;
-
-					$name = strip_request_item("name");
-					$man = strip_request_item("man");
-
-					sql_query("UPDATE `AngelTypes` SET `Name`='" . sql_escape($name) . "', `Man`='" . sql_escape($man) . "' WHERE `TID`=" . sql_escape($id) . " LIMIT 1");
-					header("Location: " . page_link_to("admin_angel_types"));
-				} else
-					return error("No Angel Type found.");
-				break;
+	$angel_types_source = sql_select("SELECT * FROM `AngelTypes` ORDER BY `name`");
+	$angel_types = array ();
+	foreach ($angel_types_source as $angel_type) {
+		$angel_types[] = array (
+			'id' => $angel_type['id'],
+			'name' => $angel_type['name'],
+			'restricted' => $angel_type['restricted'] == 1 ? '&#10003;' : '',
+			'actions' => '<a class="action edit" href="' . page_link_to('admin_angel_types') . '&show=edit&id=' . $angel_type['id'] . '">edit</a> <a class="action delete" href="' . page_link_to('admin_angel_types') . '&show=delete&id=' . $angel_type['id'] . '">delete</a>'
+		);
+	}
 
-			case 'delete' :
-				if (isset ($_REQUEST['id']) && preg_match("/^[0-9]{1,11}$/", $_REQUEST['id']))
-					$id = $_REQUEST['id'];
-				else
-					return error("Incomplete call, missing AngelType ID.");
+	if (isset ($_REQUEST['show'])) {
+		if (test_request_int('id')) {
+			$angel_type = sql_select("SELECT * FROM `AngelTypes` WHERE `id`=" . sql_escape($_REQUEST['id']));
+			if (count($angel_type) > 0) {
+				$id = $_REQUEST['id'];
+				$name = $angel_type[0]['name'];
+				$restricted = $angel_type[0]['restricted'];
+			} else
+				redirect(page_link_to('admin_angel_types'));
+		}
 
-				$angel_type = sql_select("SELECT * FROM `AngelTypes` WHERE `TID`=" . sql_escape($id) . " LIMIT 1");
-				if (count($angel_type) > 0) {
-					sql_query("DELETE FROM `AngelTypes` WHERE `TID`=" . sql_escape($id) . " LIMIT 1");
-					sql_query("DELETE FROM `NeededAngelTypes` WHERE `angel_type_id`=" . sql_escape($id) . " LIMIT 1");
-					header("Location: " . page_link_to("admin_angel_types"));
-				} else
-					return error("No Angel Type found.");
-				break;
+		if ($_REQUEST['show'] == 'edit') {
+			$msg = "";
+			$name = "";
+			$restricted = 0;
+
+			if (isset ($_REQUEST['submit'])) {
+				$ok = true;
+
+				if (isset ($_REQUEST['name']) && strlen(strip_request_item('name')) > 0) {
+					$name = strip_request_item('name');
+					if (sql_num_query("SELECT * FROM `AngelTypes` WHERE NOT `id`=" . sql_escape(isset ($id) ? $id : 0) . " AND `name`='" . sql_escape(strip_request_item('name')) . "' LIMIT 1") > 0) {
+						$ok = false;
+						$msg .= error("This angel type name is already given.", true);
+					}
+				} else {
+					$ok = false;
+					$msg .= error("Please enter a name.", true);
+				}
+
+				if (isset ($_REQUEST['restricted']))
+					$restricted = 1;
+
+				if ($ok) {
+					if (isset ($id))
+						sql_query("UPDATE `AngelTypes` SET `name`='" . sql_escape($name) . "', `restricted`=" . sql_escape($restricted) . " WHERE `id`=" . sql_escape($id) . " LIMIT 1");
+					else
+						sql_query("INSERT INTO `AngelTypes` SET `name`='" . sql_escape($name) . "', `restricted`=" . sql_escape($restricted));
+
+					success("Angel type saved.");
+					redirect(page_link_to('admin_angel_types'));
+				}
+			}
+
+			return page(array (
+				buttons(array (
+					button(page_link_to('admin_angel_types'), "Back", 'back')
+				)),
+				$msg,
+				form(array (
+					form_text('name', 'Name', $name),
+					form_checkbox('restricted', 'Restricted', $restricted),
+					form_info("", "Restricted angel types can only be used by an angel if enabled by an archangel (double opt-in)."),
+					form_submit('submit', 'Save')
+				))
+			));
 		}
+		elseif ($_REQUEST['show'] == 'delete') {
+			if (isset ($_REQUEST['ack'])) {
+				sql_query("DELETE FROM `NeededAngelTypes` WHERE `angel_type_id`=" . sql_escape($id) . " LIMIT 1");
+				sql_query("DELETE FROM `ShiftEntry` WHERE `TID`=" . sql_escape($id) . " LIMIT 1");
+				sql_query("DELETE FROM `AngelTypes` WHERE `id`=" . sql_escape($id) . " LIMIT 1");
+				success(sprintf("Angel type %s deleted.", $name));
+				redirect(page_link_to('admin_angel_types'));
+			}
+
+			return page(array (
+				buttons(array (
+					button(page_link_to('admin_angel_types'), "Back", 'back')
+				)),
+				sprintf("Do you want to delete angel type %s?", $name),
+				buttons(array (
+					button(page_link_to('admin_angel_types') . '&show=delete&id=' . $id . '&ack', "Delete", 'delete')
+				))
+			));
+		} else
+			redirect(page_link_to('admin_angel_types'));
 	}
 
-	return $html;
+	return page(array (
+		buttons(array (
+			button(page_link_to('admin_angel_types') . '&show=edit', "Add", 'add')
+		)),
+		msg(),
+		table(array (
+			'name' => "Name",
+			'restricted' => "Restricted",
+			'actions' => ""
+		), $angel_types)
+	));
 }
 ?>
diff --git a/includes/pages/admin_rooms.php b/includes/pages/admin_rooms.php
index c4e8ba46..e04e3697 100644
--- a/includes/pages/admin_rooms.php
+++ b/includes/pages/admin_rooms.php
@@ -63,7 +63,7 @@ function admin_rooms() {
 				$room = sql_select("SELECT * FROM `Room` WHERE `RID`=" . sql_escape($rid) . " LIMIT 1");
 				if (count($room) > 0) {
 					list ($room) = $room;
-					$room_angel_types = sql_select("SELECT * FROM `AngelTypes` LEFT OUTER JOIN `NeededAngelTypes` ON (`AngelTypes`.`TID` = `NeededAngelTypes`.`angel_type_id` AND `NeededAngelTypes`.`room_id`=" . sql_escape($rid) . ") ORDER BY `AngelTypes`.`Name`");
+					$room_angel_types = sql_select("SELECT * FROM `AngelTypes` LEFT OUTER JOIN `NeededAngelTypes` ON (`AngelTypes`.`id` = `NeededAngelTypes`.`angel_type_id` AND `NeededAngelTypes`.`room_id`=" . sql_escape($rid) . ") ORDER BY `AngelTypes`.`name`");
 
 					$angel_types = "";
 					foreach ($room_angel_types as $room_angel_type) {
@@ -101,7 +101,7 @@ function admin_rooms() {
 				$room = sql_select("SELECT * FROM `Room` WHERE `RID`=" . sql_escape($rid) . " LIMIT 1");
 				if (count($room) > 0) {
 					list ($room) = $room;
-					$room_angel_types = sql_select("SELECT * FROM `AngelTypes` LEFT OUTER JOIN `NeededAngelTypes` ON (`AngelTypes`.`TID` = `NeededAngelTypes`.`angel_type_id` AND `NeededAngelTypes`.`room_id`=" . sql_escape($rid) . ") ORDER BY `AngelTypes`.`Name`");
+					$room_angel_types = sql_select("SELECT * FROM `AngelTypes` LEFT OUTER JOIN `NeededAngelTypes` ON (`AngelTypes`.`id` = `NeededAngelTypes`.`angel_type_id` AND `NeededAngelTypes`.`room_id`=" . sql_escape($rid) . ") ORDER BY `AngelTypes`.`name`");
 
 					$name = preg_replace("/([^\p{L}\p{P}\p{Z}\p{N}]{1,})/ui", '', strip_tags($_REQUEST['Name']));
 					$man = preg_replace("/([^\p{L}\p{P}\p{Z}\p{N}]{1,})/ui", '', strip_tags($_REQUEST['Man']));
diff --git a/includes/pages/admin_shifts.php b/includes/pages/admin_shifts.php
index 94c6f38a..ebc503f1 100644
--- a/includes/pages/admin_shifts.php
+++ b/includes/pages/admin_shifts.php
@@ -21,7 +21,7 @@ function admin_shifts() {
 		$room_array[$room['RID']] = $room['Name'];
 
 	// Engeltypen laden
-	$types = sql_select("SELECT * FROM `AngelTypes` ORDER BY `Name`");
+	$types = sql_select("SELECT * FROM `AngelTypes` ORDER BY `name`");
 	$needed_angel_types = array ();
 	foreach ($types as $type)
 		$needed_angel_types[$type['TID']] = 0;
diff --git a/includes/pages/guest_login.php b/includes/pages/guest_login.php
index 51afd9c5..47c1c0a7 100644
--- a/includes/pages/guest_login.php
+++ b/includes/pages/guest_login.php
@@ -168,7 +168,7 @@ function guest_register() {
 		$html .= "<tr><td>" . Get_Text("makeuser_Engelart") . "</td><td align=\"left\">\n";
 		$html .= "<select name=\"Art\">\n";
 
-		$engel_types = sql_select("SELECT * FROM `AngelTypes` ORDER BY `NAME`");
+		$engel_types = sql_select("SELECT * FROM `AngelTypes` ORDER BY `name`");
 		foreach ($engel_types as $engel_type) {
 			$Name = $engel_type['Name'] . Get_Text("inc_schicht_engel");
 			$html .= "<option value=\"" . $Name . "\"";
diff --git a/includes/pages/user_myshifts.php b/includes/pages/user_myshifts.php
index dd53d134..48c3b176 100644
--- a/includes/pages/user_myshifts.php
+++ b/includes/pages/user_myshifts.php
@@ -27,7 +27,7 @@ function user_myshifts() {
 	}
 	elseif (isset ($_REQUEST['edit']) && preg_match("/^[0-9]*$/", $_REQUEST['edit'])) {
 		$id = $_REQUEST['edit'];
-		$shift = sql_select("SELECT `ShiftEntry`.`Comment`, `Shifts`.*, `Room`.`Name`, `AngelTypes`.`Name` as `angel_type` FROM `ShiftEntry` JOIN `AngelTypes` ON (`ShiftEntry`.`TID` = `AngelTypes`.`TID`) JOIN `Shifts` ON (`ShiftEntry`.`SID` = `Shifts`.`SID`) JOIN `Room` ON (`Shifts`.`RID` = `Room`.`RID`) WHERE `id`=" . sql_escape($id) . " AND `UID`=" . sql_escape($shifts_user['UID']) . " LIMIT 1");
+		$shift = sql_select("SELECT `ShiftEntry`.`Comment`, `Shifts`.*, `Room`.`Name`, `AngelTypes`.`name` as `angel_type` FROM `ShiftEntry` JOIN `AngelTypes` ON (`ShiftEntry`.`TID` = `AngelTypes`.`id`) JOIN `Shifts` ON (`ShiftEntry`.`SID` = `Shifts`.`SID`) JOIN `Room` ON (`Shifts`.`RID` = `Room`.`RID`) WHERE `id`=" . sql_escape($id) . " AND `UID`=" . sql_escape($shifts_user['UID']) . " LIMIT 1");
 		if (count($shift) > 0) {
 			$shift = $shift[0];
 
diff --git a/includes/pages/user_shifts.php b/includes/pages/user_shifts.php
index 668fe8b7..10a96278 100644
--- a/includes/pages/user_shifts.php
+++ b/includes/pages/user_shifts.php
@@ -36,7 +36,7 @@ function user_shifts() {
 			$room_array[$room['RID']] = $room['Name'];
 
 		// Engeltypen laden
-		$types = sql_select("SELECT * FROM `NeededAngelTypes` JOIN `AngelTypes` ON (`NeededAngelTypes`.`angel_type_id` = `AngelTypes`.`TID`) WHERE `shift_id`=" . sql_escape($shift_id) . " ORDER BY `AngelTypes`.`Name`");
+		$types = sql_select("SELECT * FROM `NeededAngelTypes` JOIN `AngelTypes` ON (`NeededAngelTypes`.`angel_type_id` = `AngelTypes`.`id`) WHERE `shift_id`=" . sql_escape($shift_id) . " ORDER BY `AngelTypes`.`name`");
 		$needed_angel_types = array ();
 		foreach ($types as $type)
 			$needed_angel_types[$type['TID']] = $type['count'];
@@ -162,7 +162,7 @@ function user_shifts() {
 		else
 			header("Location: " . page_link_to('user_shifts'));
 
-		$type = sql_select("SELECT * FROM `AngelTypes` WHERE `TID`=" . sql_escape($type_id) . " LIMIT 1");
+		$type = sql_select("SELECT * FROM `AngelTypes` WHERE `id`=" . sql_escape($type_id) . " LIMIT 1");
 		if (count($type) == 0)
 			header("Location: " . page_link_to('user_shifts'));
 		$type = $type[0];
@@ -240,9 +240,9 @@ function user_shifts() {
 					$shift_row .= ' <a href="?p=user_shifts&edit_shift=' . $shift['SID'] . '">[edit]</a> <a href="?p=user_shifts&delete_shift=' . $shift['SID'] . '">[x]</a>';
 				$shift_row .= '<br />';
 				$show_shift = false;
-				$angeltypes = sql_select("SELECT * FROM `NeededAngelTypes` JOIN `AngelTypes` ON (`NeededAngelTypes`.`angel_type_id` = `AngelTypes`.`TID`) WHERE `shift_id`=" . sql_escape($shift['SID']) . " AND `count` > 0 ORDER BY `AngelTypes`.`Name`");
+				$angeltypes = sql_select("SELECT * FROM `NeededAngelTypes` JOIN `AngelTypes` ON (`NeededAngelTypes`.`angel_type_id` = `AngelTypes`.`id`) WHERE `shift_id`=" . sql_escape($shift['SID']) . " AND `count` > 0 ORDER BY `AngelTypes`.`name`");
 				if (count($angeltypes) == 0)
-					$angeltypes = sql_select("SELECT * FROM `NeededAngelTypes` JOIN `AngelTypes` ON (`NeededAngelTypes`.`angel_type_id` = `AngelTypes`.`TID`) WHERE `room_id`=" . sql_escape($shift['RID']) . " AND `count` > 0 ORDER BY `AngelTypes`.`Name`");
+					$angeltypes = sql_select("SELECT * FROM `NeededAngelTypes` JOIN `AngelTypes` ON (`NeededAngelTypes`.`angel_type_id` = `AngelTypes`.`id`) WHERE `room_id`=" . sql_escape($shift['RID']) . " AND `count` > 0 ORDER BY `AngelTypes`.`name`");
 
 				if (count($angeltypes) > 0) {
 					$my_shift = sql_num_query("SELECT * FROM `ShiftEntry` WHERE `SID`=" . sql_escape($shift['SID']) . " AND `UID`=" . sql_escape($user['UID']) . " LIMIT 1") > 0;
diff --git a/includes/sys_page.php b/includes/sys_page.php
index e499cd57..54bbd953 100644
--- a/includes/sys_page.php
+++ b/includes/sys_page.php
@@ -1,26 +1,97 @@
 <?php
 
+
+/**
+ * Leitet den Browser an die übergebene URL weiter und hält das Script an.
+ */
+function redirect($to) {
+	header("Location: " . $to, true, 302);
+	die();
+}
+
+/**
+ * Gibt den gefilterten REQUEST Wert ohne Zeilenumbrüche zurück
+ */
 function strip_request_item($name) {
-	return preg_replace(
-		"/([^\p{L}\p{P}\p{Z}\p{N}]{1,})/ui",
-		'',
-		strip_tags($_REQUEST[$name])
-	);
+	return strip_item($_REQUEST[$name]);
 }
 
+/**
+ * Testet, ob der angegebene REQUEST Wert ein Integer ist, bzw. eine ID sein könnte.
+ */
+function test_request_int($name) {
+	if (isset ($_REQUEST[$name]))
+		return preg_match("/^[0-9]*$/", $_REQUEST[$name]);
+	return false;
+}
+
+/**
+ * Gibt den gefilterten REQUEST Wert mit Zeilenumbrüchen zurück
+ */
 function strip_request_item_nl($name) {
-	return preg_replace(
-		"/([^\p{L}\p{P}\p{Z}\p{N}\n]{1,})/ui",
-		'',
-		strip_tags($_REQUEST[$name])
-	);
+	return preg_replace("/([^\p{L}\p{P}\p{Z}\p{N}+\n]{1,})/ui", '', strip_tags($_REQUEST[$name]));
+}
+
+/**
+ * Entfernt unerwünschte Zeichen
+ */
+function strip_item($item) {
+	return preg_replace("/([^\p{L}\p{P}\p{Z}\p{N}+]{1,})/ui", '', strip_tags($item));
+}
+
+/**
+ * Gibt zwischengespeicherte Fehlermeldungen zurück und löscht den Zwischenspeicher
+ */
+function msg() {
+	if (!isset ($_SESSION['msg']))
+		return "";
+	$msg = $_SESSION['msg'];
+	$_SESSION['msg'] = "";
+	return $msg;
+}
+
+/**
+ * Rendert eine Information
+ */
+function info($msg, $immediatly = false) {
+	if ($immediatly) {
+		if ($msg == "")
+			return "";
+		return '<p class="info">' . $msg . '</p>';
+	} else {
+		if (!isset ($_SESSION['msg']))
+			$_SESSION['msg'] = "";
+		$_SESSION['msg'] .= info($msg, true);
+	}
 }
 
-function error($msg) {
-	return '<p class="error">' . $msg . '</p>';
+/**
+ * Rendert eine Fehlermeldung
+ */
+function error($msg, $immediatly = false) {
+	if ($immediatly) {
+		if ($msg == "")
+			return "";
+		return '<p class="error">' . $msg . '</p>';
+	} else {
+		if (!isset ($_SESSION['msg']))
+			$_SESSION['msg'] = "";
+		$_SESSION['msg'] .= error($msg, true);
+	}
 }
 
-function success($msg) {
-	return '<p class="success">' . $msg . '</p>';
+/**
+ * Rendert eine Erfolgsmeldung
+ */
+function success($msg, $immediatly = false) {
+	if ($immediatly) {
+		if ($msg == "")
+			return "";
+		return '<p class="success">' . $msg . '</p>';
+	} else {
+		if (!isset ($_SESSION['msg']))
+			$_SESSION['msg'] = "";
+		$_SESSION['msg'] .= success($msg, true);
+	}
 }
 ?>
diff --git a/includes/sys_template.php b/includes/sys_template.php
index 92e6e674..4af22500 100644
--- a/includes/sys_template.php
+++ b/includes/sys_template.php
@@ -1,6 +1,130 @@
 <?php
 
 
+/**
+ * Rendert eine Liste von Checkboxen für ein Formular
+ * @param name Die Namen der Checkboxen werden aus name_key gebildet
+ * @param label Die Beschriftung der Liste
+ * @param items Array mit den einzelnen Checkboxen
+ * @param selected Array mit den Keys, die ausgewählt sind
+ */
+function form_checkboxes($name, $label, $items, $selected) {
+	$html = "<ul>";
+	foreach ($items as $key => $item) {
+		$id = $name . '_' . $key;
+		$sel = array_search($key, $selected) !== false ? ' checked="checked"' : "";
+		$html .= '<li><input type="checkbox" id="' . $id . '" name="' . $id . '" value="checked"' . $sel . ' /><label for="' . $id . '">' . $item . '</label></li>';
+	}
+	$html .= "</ul>";
+	return form_element($label, $html);
+}
+
+/**
+ * Rendert eine Checkbox
+ */
+function form_checkbox($name, $label, $selected, $value = 'checked') {
+	return form_element("", '<input type="checkbox" id="' . $name . '" name="' . $name . '" value="' . $value . '"' . ($selected ? ' checked="checked"' : '') . ' /><label for="' . $name . '">' . $label . '</label>');
+}
+
+/**
+ * Rendert einen Infotext in das Formular
+ */
+function form_info($label, $text) {
+	return form_element($label, $text, "");
+}
+
+/**
+ * Rendert den Absenden-Button eines Formulars
+ */
+function form_submit($name, $label) {
+	return form_element('<input class="button save ' . $name . '" type="submit" name="' . $name . '" value="' . $label . '" />', "");
+}
+
+/**
+ * Rendert ein Formular-Textfeld
+ */
+function form_text($name, $label, $value, $disabled = false) {
+	$disabled = $disabled ? ' disabled="disabled"' : '';
+	return form_element($label, '<input id="form_' . $name . '" type="text" name="' . $name . '" value="' . $value . '" ' . $disabled . '/>', 'form_' . $name);
+}
+
+/**
+ * Rendert ein Formular-Textfeld
+ */
+function form_textarea($name, $label, $value, $disabled = false) {
+	$disabled = $disabled ? ' disabled="disabled"' : '';
+	return form_element($label, '<textarea id="form_' . $name . '" type="text" name="' . $name . '" ' . $disabled . '>' . $value . '</textarea>', 'form_' . $name);
+}
+
+/**
+ * Rendert ein Formular-Auswahlfeld
+ */
+function form_select($name, $label, $values, $selected) {
+	return form_element($label, html_select_key('form_' . $name, $name, $values, $selected), 'form_' . $name);
+}
+
+/** 
+ * Rendert ein Formular-Element
+ */
+function form_element($label, $input, $for = "") {
+	return '<div class="form_element">' . '<label for="' . $for . '" class="form_label">' . $label . '</label><div class="form_input">' . $input . '</div></div>';
+}
+
+/**
+ * Rendert ein Formular
+ */
+function form($elements, $action = "") {
+	return '<form action="' . $action . '" enctype="multipart/form-data" method="post"><div class="form">' . join($elements) . '</div></form>';
+}
+
+/**
+ * Generiert HTML Code für eine "Seite". Fügt dazu die übergebenen Elemente zusammen.
+ */
+function page($elements) {
+	return join($elements);
+}
+
+/**
+ * Rendert eine Datentabelle
+ */
+function table($columns, $rows, $data = true) {
+	if (count($rows) == 0)
+		return info("No data available.", true);
+	$html = "";
+	$html .= '<table' . ($data ? ' class="data"' : '') . '>';
+	$html .= '<thead><tr>';
+	foreach ($columns as $key => $column)
+		$html .= '<th>' . $column . '</th>';
+	$html .= '</tr></thead>';
+	$html .= '<tbody>';
+	foreach ($rows as $row) {
+		$html .= '<tr>';
+		foreach ($columns as $key => $column)
+			if (isset ($row[$key]))
+				$html .= '<td class="' . $key . '">' . $row[$key] . '</td>';
+			else
+				$html .= '<td class="' . $key . '">&nbsp;</td>';
+		$html .= '</tr>';
+	}
+	$html .= '</tbody>';
+	$html .= '</table>';
+	return $html;
+}
+
+/**
+ * Rendert einen Knopf
+ */
+function button($href, $label, $class = "") {
+	return '<a href="' . $href . '" class="button ' . $class . '">' . $label . '</a>';
+}
+
+/**
+ * Rendert eine Toolbar mit Knöpfen
+ */
+function buttons($buttons = array ()) {
+	return '<div class="toolbar">' . join($buttons) . '</div>';
+}
+
 // Load and render template
 function template_render($file, $data) {
 	if (file_exists($file)) {