|
+-----------------------------------------------------------------------+
$Id$
*/
/**
* Class to create HTML page output using a skin template
*
* @package View
* @todo Documentation
* @uses rcube_html_page
*/
class rcube_template extends rcube_html_page
{
var $app;
var $config;
var $framed = false;
var $pagetitle = '';
var $message = null;
var $env = array();
var $js_env = array();
var $js_commands = array();
var $object_handlers = array();
public $type = 'html';
public $ajax_call = false;
/**
* Constructor
*
* @todo Use jQuery's $(document).ready() here.
* @todo Replace $this->config with the real rcube_config object
*/
public function __construct($task, $framed = false)
{
parent::__construct();
$this->app = rcmail::get_instance();
$this->config = $this->app->config->all();
$this->browser = new rcube_browser();
//$this->framed = $framed;
$this->set_env('task', $task);
// load the correct skin (in case user-defined)
$this->set_skin($this->config['skin']);
// add common javascripts
$javascript = 'var '.JS_OBJECT_NAME.' = new rcube_webmail();';
// don't wait for page onload. Call init at the bottom of the page (delayed)
$javascript_foot = '$(document).ready(function(){ '.JS_OBJECT_NAME.'.init(); });';
$this->add_script($javascript, 'head_top');
$this->add_script($javascript_foot, 'foot');
$this->scripts_path = 'program/js/';
$this->include_script('jquery-1.3.min.js');
$this->include_script('common.js');
$this->include_script('app.js');
// register common UI objects
$this->add_handlers(array(
'loginform' => array($this, 'login_form'),
'username' => array($this, 'current_username'),
'message' => array($this, 'message_container'),
'charsetselector' => array($this, 'charset_selector'),
));
}
/**
* Set environment variable
*
* @param string Property name
* @param mixed Property value
* @param boolean True if this property should be added to client environment
*/
public function set_env($name, $value, $addtojs = true)
{
$this->env[$name] = $value;
if ($addtojs || isset($this->js_env[$name])) {
$this->js_env[$name] = $value;
}
}
/**
* Set page title variable
*/
public function set_pagetitle($title)
{
$this->pagetitle = $title;
}
/**
* Getter for the current page title
*
* @return string The page title
*/
public function get_pagetitle()
{
if (!empty($this->pagetitle)) {
$title = $this->pagetitle;
}
else if ($this->env['task'] == 'login') {
$title = rcube_label(array('name' => 'welcome', 'vars' => array('product' => $this->config['product_name'])));
}
else {
$title = ucfirst($this->env['task']);
}
return $title;
}
/**
* Set skin
*/
public function set_skin($skin)
{
if (!empty($skin) && is_dir('skins/'.$skin) && is_readable('skins/'.$skin))
$skin_path = 'skins/'.$skin;
else
$skin_path = $this->config['skin_path'] ? $this->config['skin_path'] : 'skins/default';
$this->app->config->set('skin_path', $skin_path);
$this->config['skin_path'] = $skin_path;
}
/**
* Check if a specific template exists
*
* @param string Template name
* @return boolean True if template exists
*/
public function template_exists($name)
{
$filename = $this->config['skin_path'] . '/templates/' . $name . '.html';
return (is_file($filename) && is_readable($filename));
}
/**
* Register a template object handler
*
* @param string Object name
* @param string Function name to call
* @return void
*/
public function add_handler($obj, $func)
{
$this->object_handlers[$obj] = $func;
}
/**
* Register a list of template object handlers
*
* @param array Hash array with object=>handler pairs
* @return void
*/
public function add_handlers($arr)
{
$this->object_handlers = array_merge($this->object_handlers, $arr);
}
/**
* Register a GUI object to the client script
*
* @param string Object name
* @param string Object ID
* @return void
*/
public function add_gui_object($obj, $id)
{
$this->add_script(JS_OBJECT_NAME.".gui_object('$obj', '$id');");
}
/**
* Call a client method
*
* @param string Method to call
* @param ... Additional arguments
*/
public function command()
{
$cmd = func_get_args();
if (strpos($cmd[0], 'plugin.') === false)
$this->js_commands[] = $cmd;
}
/**
* Add a localized label to the client environment
*/
public function add_label()
{
$args = func_get_args();
if (count($args) == 1 && is_array($args[0]))
$args = $args[0];
foreach ($args as $name) {
$this->command('add_label', $name, rcube_label($name));
}
}
/**
* Invoke display_message command
*
* @param string Message to display
* @param string Message type [notice|confirm|error]
* @param array Key-value pairs to be replaced in localized text
* @param boolean Override last set message
* @uses self::command()
*/
public function show_message($message, $type='notice', $vars=null, $override=true)
{
if ($override || !$this->message) {
$this->message = $message;
$this->command(
'display_message',
rcube_label(array('name' => $message, 'vars' => $vars)),
$type);
}
}
/**
* Delete all stored env variables and commands
*
* @return void
* @uses rcube_html::reset()
* @uses self::$env
* @uses self::$js_env
* @uses self::$js_commands
* @uses self::$object_handlers
*/
public function reset()
{
$this->env = array();
$this->js_env = array();
$this->js_commands = array();
$this->object_handlers = array();
parent::reset();
}
/**
* Redirect to a certain url
*
* @param mixed Either a string with the action or url parameters as key-value pairs
* @see rcmail::url()
*/
public function redirect($p = array())
{
$location = $this->app->url($p);
header('Location: ' . $location);
exit;
}
/**
* Send the request output to the client.
* This will either parse a skin tempalte or send an AJAX response
*
* @param string Template name
* @param boolean True if script should terminate (default)
*/
public function send($templ = null, $exit = true)
{
if ($templ != 'iframe') {
// prevent from endless loops
if ($this->app->plugins->is_processing('render_page')) {
raise_error(array('code' => 505, 'type' => 'php', 'message' => 'Recursion alert: ignoring output->send()'), true, false);
return;
}
$this->parse($templ, false);
}
else {
$this->framed = $templ == 'iframe' ? true : $this->framed;
$this->write();
}
// set output asap
ob_flush();
flush();
if ($exit) {
exit;
}
}
/**
* Process template and write to stdOut
*
* @param string HTML template
* @see rcube_html_page::write()
* @override
*/
public function write($template = '')
{
// unlock interface after iframe load
if ($this->framed) {
array_unshift($this->js_commands, array('set_busy', false));
}
// write all env variables to client
$js = $this->framed ? "if(window.parent) {\n" : '';
$js .= $this->get_js_commands() . ($this->framed ? ' }' : '');
$this->add_script($js, 'head_top');
// call super method
parent::write($template, $this->config['skin_path']);
}
/**
* Parse a specific skin template and deliver to stdout
*
* Either returns nothing, or exists hard (exit();)
*
* @param string Template name
* @param boolean Exit script
* @return void
* @link http://php.net/manual/en/function.exit.php
*/
private function parse($name = 'main', $exit = true)
{
$skin_path = $this->config['skin_path'];
$plugin = false;
$temp = explode(".", $name, 2);
if (count($temp) > 1) {
$plugin = $temp[0];
$name = $temp[1];
$skin_dir = $plugin . '/skins/' . $this->config['skin'];
$skin_path = $this->app->plugins->dir . $skin_dir;
if (!is_dir($skin_path)) { // fallback to default skin
$skin_dir = $plugin . '/skins/default';
$skin_path = $this->app->plugins->dir . $skin_dir;
}
}
$path = "$skin_path/templates/$name.html";
// read template file
if (($templ = @file_get_contents($path)) === false) {
raise_error(array(
'code' => 501,
'type' => 'php',
'line' => __LINE__,
'file' => __FILE__,
'message' => 'Error loading template for '.$name
), true, true);
return false;
}
// replace all path references to plugins/... with the configured plugins dir
// and /this/ to the current plugin skin directory
if ($plugin) {
$templ = preg_replace(array('/\bplugins\//', '/(["\']?)\/this\//'), array($this->app->plugins->url, '\\1'.$this->app->plugins->url.$skin_dir.'/'), $templ);
}
// parse for specialtags
$output = $this->parse_conditions($templ);
$output = $this->parse_xml($output);
// trigger generic hook where plugins can put additional content to the page
$hook = $this->app->plugins->exec_hook("render_page", array('template' => $name, 'content' => $output));
// add debug console
if ($this->config['debug_level'] & 8) {
$this->add_footer(''
);
}
$output = $this->parse_with_globals($hook['content']);
$this->write(trim($output));
if ($exit) {
exit;
}
}
/**
* Return executable javascript code for all registered commands
*
* @return string $out
*/
private function get_js_commands()
{
$out = '';
if (!$this->framed && !empty($this->js_env)) {
$out .= JS_OBJECT_NAME . '.set_env('.json_serialize($this->js_env).");\n";
}
foreach ($this->js_commands as $i => $args) {
$method = array_shift($args);
foreach ($args as $i => $arg) {
$args[$i] = json_serialize($arg);
}
$parent = $this->framed || preg_match('/^parent\./', $method);
$out .= sprintf(
"%s.%s(%s);\n",
($parent ? 'if(window.parent && parent.'.JS_OBJECT_NAME.') parent.' : '') . JS_OBJECT_NAME,
preg_replace('/^parent\./', '', $method),
implode(',', $args)
);
}
return $out;
}
/**
* Make URLs starting with a slash point to skin directory
*
* @param string Input string
* @return string
*/
public function abs_url($str)
{
return preg_replace('/^\//', $this->config['skin_path'].'/', $str);
}
/***** Template parsing methods *****/
/**
* Replace all strings ($varname)
* with the content of the according global variable.
*/
private function parse_with_globals($input)
{
$GLOBALS['__version'] = Q(RCMAIL_VERSION);
$GLOBALS['__comm_path'] = Q($this->app->comm_path);
return preg_replace('/\$(__[a-z0-9_\-]+)/e', '$GLOBALS["\\1"]', $input);
}
/**
* Public wrapper to dipp into template parsing.
*
* @param string $input
* @return string
* @uses rcube_template::parse_xml()
* @since 0.1-rc1
*/
public function just_parse($input)
{
return $this->parse_xml($input);
}
/**
* Parse for conditional tags
*
* @param string $input
* @return string
*/
private function parse_conditions($input)
{
$matches = preg_split('/]+)>/is', $input, 2, PREG_SPLIT_DELIM_CAPTURE);
if ($matches && count($matches) == 4) {
if (preg_match('/^(else|endif)$/i', $matches[1])) {
return $matches[0] . $this->parse_conditions($matches[3]);
}
$attrib = parse_attrib_string($matches[2]);
if (isset($attrib['condition'])) {
$condmet = $this->check_condition($attrib['condition']);
$submatches = preg_split('/]+)>/is', $matches[3], 2, PREG_SPLIT_DELIM_CAPTURE);
if ($condmet) {
$result = $submatches[0];
$result.= ($submatches[1] != 'endif' ? preg_replace('/.*]+>/Uis', '', $submatches[3], 1) : $submatches[3]);
}
else {
$result = "" . $submatches[3];
}
return $matches[0] . $this->parse_conditions($result);
}
raise_error(array(
'code' => 500,
'type' => 'php',
'line' => __LINE__,
'file' => __FILE__,
'message' => "Unable to parse conditional tag " . $matches[2]
), true, false);
}
return $input;
}
/**
* Determines if a given condition is met
*
* @todo Get rid off eval() once I understand what this does.
* @todo Extend this to allow real conditions, not just "set"
* @param string Condition statement
* @return boolean True if condition is met, False if not
*/
private function check_condition($condition)
{
return eval("return (".$this->parse_expression($condition).");");
}
/**
* Parses expression and replaces variables
*
* @param string Expression statement
* @return string Expression statement
*/
private function parse_expression($expression)
{
return preg_replace(
array(
'/session:([a-z0-9_]+)/i',
'/config:([a-z0-9_]+)(:([a-z0-9_]+))?/i',
'/env:([a-z0-9_]+)/i',
'/request:([a-z0-9_]+)/i',
'/cookie:([a-z0-9_]+)/i',
'/browser:([a-z0-9_]+)/i'
),
array(
"\$_SESSION['\\1']",
"\$this->app->config->get('\\1',get_boolean('\\3'))",
"\$this->env['\\1']",
"get_input_value('\\1', RCUBE_INPUT_GPC)",
"\$_COOKIE['\\1']",
"\$this->browser->{'\\1'}"
),
$expression);
}
/**
* Search for special tags in input and replace them
* with the appropriate content
*
* @param string Input string to parse
* @return string Altered input string
* @todo Use DOM-parser to traverse template HTML
* @todo Maybe a cache.
*/
private function parse_xml($input)
{
return preg_replace_callback('/]+)>/Ui', array($this, 'xml_command'), $input);
}
/**
* Callback function for parsing an xml command tag
* and turn it into real html content
*
* @param array Matches array of preg_replace_callback
* @return string Tag/Object content
*/
private function xml_command($matches)
{
$command = strtolower($matches[1]);
$attrib = parse_attrib_string($matches[2]);
// empty output if required condition is not met
if (!empty($attrib['condition']) && !$this->check_condition($attrib['condition'])) {
return '';
}
// execute command
switch ($command) {
// return a button
case 'button':
if ($attrib['name'] || $attrib['command']) {
return $this->button($attrib);
}
break;
// show a label
case 'label':
if ($attrib['name'] || $attrib['command']) {
return Q(rcube_label($attrib + array('vars' => array('product' => $this->config['product_name']))));
}
break;
// include a file
case 'include':
$path = realpath($this->config['skin_path'].$attrib['file']);
if (is_readable($path)) {
if ($this->config['skin_include_php']) {
$incl = $this->include_php($path);
}
else {
$incl = file_get_contents($path);
}
$incl = $this->parse_conditions($incl);
return $this->parse_xml($incl);
}
break;
case 'plugin.include':
$hook = $this->app->plugins->exec_hook("template_plugin_include", $attrib);
return $hook['content'];
break;
// define a container block
case 'container':
if ($attrib['name'] && $attrib['id']) {
$this->command('gui_container', $attrib['name'], $attrib['id']);
// let plugins insert some content here
$hook = $this->app->plugins->exec_hook("template_container", $attrib);
return $hook['content'];
}
break;
// return code for a specific application object
case 'object':
$object = strtolower($attrib['name']);
$content = '';
// we are calling a class/method
if (($handler = $this->object_handlers[$object]) && is_array($handler)) {
if ((is_object($handler[0]) && method_exists($handler[0], $handler[1])) ||
(is_string($handler[0]) && class_exists($handler[0])))
$content = call_user_func($handler, $attrib);
}
// execute object handler function
else if (function_exists($handler)) {
$content = call_user_func($handler, $attrib);
}
else if ($object == 'productname') {
$name = !empty($this->config['product_name']) ? $this->config['product_name'] : 'RoundCube Webmail';
$content = Q($name);
}
else if ($object == 'version') {
$ver = (string)RCMAIL_VERSION;
if (is_file(INSTALL_PATH . '.svn/entries')) {
if (preg_match('/Revision:\s(\d+)/', @shell_exec('svn info'), $regs))
$ver .= ' [SVN r'.$regs[1].']';
}
$content = Q($ver);
}
else if ($object == 'steptitle') {
$content = Q($this->get_pagetitle());
}
else if ($object == 'pagetitle') {
$title = !empty($this->config['product_name']) ? $this->config['product_name'].' :: ' : '';
$title .= $this->get_pagetitle();
$content = Q($title);
}
// exec plugin hooks for this template object
$hook = $this->app->plugins->exec_hook("template_object_$object", $attrib + array('content' => $content));
return $hook['content'];
// return code for a specified eval expression
case 'exp':
$value = $this->parse_expression($attrib['expression']);
return eval("return Q($value);");
// return variable
case 'var':
$var = explode(':', $attrib['name']);
$name = $var[1];
$value = '';
switch ($var[0]) {
case 'env':
$value = $this->env[$name];
break;
case 'config':
$value = $this->config[$name];
if (is_array($value) && $value[$_SESSION['imap_host']]) {
$value = $value[$_SESSION['imap_host']];
}
break;
case 'request':
$value = get_input_value($name, RCUBE_INPUT_GPC);
break;
case 'session':
$value = $_SESSION[$name];
break;
case 'cookie':
$value = htmlspecialchars($_COOKIE[$name]);
break;
case 'browser':
$value = $this->browser->{$name};
break;
}
if (is_array($value)) {
$value = implode(', ', $value);
}
return Q($value);
break;
}
return '';
}
/**
* Include a specific file and return it's contents
*
* @param string File path
* @return string Contents of the processed file
*/
private function include_php($file)
{
ob_start();
include $file;
$out = ob_get_contents();
ob_end_clean();
return $out;
}
/**
* Create and register a button
*
* @param array Named button attributes
* @return string HTML button
* @todo Remove all inline JS calls and use jQuery instead.
* @todo Remove all sprintf()'s - they are pretty, but also slow.
*/
public function button($attrib)
{
static $sa_buttons = array();
static $s_button_count = 100;
// these commands can be called directly via url
$a_static_commands = array('compose', 'list', 'preferences', 'folders', 'identities');
if (!($attrib['command'] || $attrib['name'])) {
return '';
}
// try to find out the button type
if ($attrib['type']) {
$attrib['type'] = strtolower($attrib['type']);
}
else {
$attrib['type'] = ($attrib['image'] || $attrib['imagepas'] || $attrib['imageact']) ? 'image' : 'link';
}
$command = $attrib['command'];
// take the button from the stack
if ($attrib['name'] && $sa_buttons[$attrib['name']]) {
$attrib = $sa_buttons[$attrib['name']];
}
else if($attrib['image'] || $attrib['imageact'] || $attrib['imagepas'] || $attrib['class']) {
// add button to button stack
if (!$attrib['name']) {
$attrib['name'] = $command;
}
if (!$attrib['image']) {
$attrib['image'] = $attrib['imagepas'] ? $attrib['imagepas'] : $attrib['imageact'];
}
$sa_buttons[$attrib['name']] = $attrib;
}
else if ($command && $sa_buttons[$command]) {
// get saved button for this command/name
$attrib = $sa_buttons[$command];
}
if (!$attrib['id']) {
$attrib['id'] = sprintf('rcmbtn%d', $s_button_count++);
}
// get localized text for labels and titles
if ($attrib['title']) {
$attrib['title'] = Q(rcube_label($attrib['title'], $attrib['domain']));
}
if ($attrib['label']) {
$attrib['label'] = Q(rcube_label($attrib['label'], $attrib['domain']));
}
if ($attrib['alt']) {
$attrib['alt'] = Q(rcube_label($attrib['alt'], $attrib['domain']));
}
// set title to alt attribute for IE browsers
if ($this->browser->ie && $attrib['title'] && !$attrib['alt']) {
$attrib['alt'] = $attrib['title'];
}
// add empty alt attribute for XHTML compatibility
if (!isset($attrib['alt'])) {
$attrib['alt'] = '';
}
// register button in the system
if ($attrib['command']) {
$this->add_script(sprintf(
"%s.register_button('%s', '%s', '%s', '%s', '%s', '%s');",
JS_OBJECT_NAME,
$command,
$attrib['id'],
$attrib['type'],
$attrib['imageact'] ? $this->abs_url($attrib['imageact']) : $attrib['classact'],
$attrib['imagesel'] ? $this->abs_url($attrib['imagesel']) : $attrib['classsel'],
$attrib['imageover'] ? $this->abs_url($attrib['imageover']) : ''
));
// make valid href to specific buttons
if (in_array($attrib['command'], rcmail::$main_tasks)) {
$attrib['href'] = rcmail_url(null, null, $attrib['command']);
}
else if (in_array($attrib['command'], $a_static_commands)) {
$attrib['href'] = rcmail_url($attrib['command']);
}
else if ($attrib['command'] == 'permaurl' && !empty($this->env['permaurl'])) {
$attrib['href'] = $this->env['permaurl'];
}
}
// overwrite attributes
if (!$attrib['href']) {
$attrib['href'] = '#';
}
if ($command) {
$attrib['onclick'] = sprintf(
"return %s.command('%s','%s',this)",
JS_OBJECT_NAME,
$command,
$attrib['prop']
);
}
if ($command && $attrib['imageover']) {
$attrib['onmouseover'] = sprintf(
"return %s.button_over('%s','%s')",
JS_OBJECT_NAME,
$command,
$attrib['id']
);
$attrib['onmouseout'] = sprintf(
"return %s.button_out('%s','%s')",
JS_OBJECT_NAME,
$command,
$attrib['id']
);
}
if ($command && $attrib['imagesel']) {
$attrib['onmousedown'] = sprintf(
"return %s.button_sel('%s','%s')",
JS_OBJECT_NAME,
$command,
$attrib['id']
);
$attrib['onmouseup'] = sprintf(
"return %s.button_out('%s','%s')",
JS_OBJECT_NAME,
$command,
$attrib['id']
);
}
$out = '';
// generate image tag
if ($attrib['type']=='image') {
$attrib_str = html::attrib_string(
$attrib,
array(
'style', 'class', 'id', 'width',
'height', 'border', 'hspace',
'vspace', 'align', 'alt', 'tabindex'
)
);
$btn_content = sprintf('
', $this->abs_url($attrib['image']), $attrib_str);
if ($attrib['label']) {
$btn_content .= ' '.$attrib['label'];
}
$link_attrib = array('href', 'onclick', 'onmouseover', 'onmouseout', 'onmousedown', 'onmouseup', 'title', 'target');
}
else if ($attrib['type']=='link') {
$btn_content = $attrib['label'] ? $attrib['label'] : $attrib['command'];
$link_attrib = array('href', 'onclick', 'title', 'id', 'class', 'style', 'tabindex', 'target');
}
else if ($attrib['type']=='input') {
$attrib['type'] = 'button';
if ($attrib['label']) {
$attrib['value'] = $attrib['label'];
}
$attrib_str = html::attrib_string(
$attrib,
array(
'type', 'value', 'onclick',
'id', 'class', 'style', 'tabindex'
)
);
$out = sprintf('', $attrib_str);
}
// generate html code for button
if ($btn_content) {
$attrib_str = html::attrib_string($attrib, $link_attrib);
$out = sprintf('%s', $attrib_str, $btn_content);
}
return $out;
}
/* ************* common functions delivering gui objects ************** */
/**
* Create a form tag with the necessary hidden fields
*
* @param array Named tag parameters
* @return string HTML code for the form
*/
public function form_tag($attrib, $content = null)
{
if ($this->framed || !empty($_REQUEST['_framed'])) {
$hiddenfield = new html_hiddenfield(array('name' => '_framed', 'value' => '1'));
$hidden = $hiddenfield->show();
}
if (!$content)
$attrib['noclose'] = true;
return html::tag('form',
$attrib + array('action' => "./", 'method' => "get"),
$hidden . $content,
array('id','class','style','name','method','action','enctype','onsubmit'));
}
/**
* Build a form tag with a unique request token
*
* @param array Named tag parameters including 'action' and 'task' values which will be put into hidden fields
* @param string Form content
* @return string HTML code for the form
*/
public function request_form($attrib, $content)
{
$hidden = new html_hiddenfield();
if ($attrib['task']) {
$hidden->add(array('name' => '_task', 'value' => $attrib['task']));
}
if ($attrib['action']) {
$hidden->add(array('name' => '_action', 'value' => $attrib['action']));
}
// generate request token
$request_key = $attrib['request'] ? $attrib['request'] : $attrib['action'];
$hidden->add(array('name' => '_token', 'value' => $this->app->get_request_token($request_key)));
unset($attrib['task'], $attrib['request']);
$attrib['action'] = './';
// we already have a