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rcmail_output_json.php
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rcmail_output_json.php
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<?php
/*
+-----------------------------------------------------------------------+
| program/include/rcmail_output_json.php |
| |
| This file is part of the Roundcube Webmail client |
| Copyright (C) 2008-2012, The Roundcube Dev Team |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
| See the README file for a full license statement. |
| |
| PURPOSE: |
| Class to handle JSON (AJAX) output |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
| Author: Aleksander Machniak <alec@alec.pl> |
+-----------------------------------------------------------------------+
*/
/**
* View class to produce JSON responses
*
* @package Webmail
* @subpackage View
*/
class rcmail_output_json extends rcmail_output
{
protected $texts = array();
protected $commands = array();
protected $callbacks = array();
protected $message = null;
public $type = 'js';
public $ajax_call = true;
/**
* Issue command to set page title
*
* @param string $title New page title
*/
public function set_pagetitle($title)
{
if ($this->config->get('devel_mode') && !empty($_SESSION['username']))
$name = $_SESSION['username'];
else
$name = $this->config->get('product_name');
$this->command('set_pagetitle', empty($name) ? $title : $name.' :: '.$title);
}
/**
* Register a template object handler
*
* @param string $obj Object name
* @param string $func Function name to call
*/
public function add_handler($obj, $func)
{
// ignore
}
/**
* Register a list of template object handlers
*
* @param array $arr Hash array with object=>handler pairs
*/
public function add_handlers($arr)
{
// ignore
}
/**
* Call a client method
*
* @param string Method to call
* @param ... Additional arguments
*/
public function command()
{
$cmd = func_get_args();
if (strpos($cmd[0], 'plugin.') === 0)
$this->callbacks[] = $cmd;
else
$this->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) {
$this->texts[$name] = $this->app->gettext($name);
}
}
/**
* Invoke display_message command
*
* @param string $message Message to display
* @param string $type Message type [notice|confirm|error]
* @param array $vars Key-value pairs to be replaced in localized text
* @param boolean $override Override last set message
* @param int $timeout Message displaying time in seconds
* @uses self::command()
*/
public function show_message($message, $type='notice', $vars=null, $override=true, $timeout=0)
{
if ($override || !$this->message) {
if ($this->app->text_exists($message)) {
if (!empty($vars)) {
$vars = array_map(array('rcmail', 'Q'), $vars);
}
$msgtext = $this->app->gettext(array('name' => $message, 'vars' => $vars));
}
else
$msgtext = $message;
$this->message = $message;
$this->command('display_message', $msgtext, $type, $timeout * 1000);
}
}
/**
* Delete all stored env variables and commands
*/
public function reset()
{
parent::reset();
$this->texts = array();
$this->commands = array();
}
/**
* Redirect to a certain url
*
* @param mixed $p Either a string with the action or url parameters as key-value pairs
* @param int $delay Delay in seconds
* @see rcmail::url()
*/
public function redirect($p = array(), $delay = 1)
{
$location = $this->app->url($p);
$this->remote_response(sprintf("window.setTimeout(function(){ %s.redirect('%s',true); }, %d);",
self::JS_OBJECT_NAME, $location, $delay));
exit;
}
/**
* Send an AJAX response to the client.
*/
public function send()
{
$this->remote_response();
exit;
}
/**
* Show error page and terminate script execution
*
* @param int $code Error code
* @param string $message Error message
*/
public function raise_error($code, $message)
{
if ($code == 403) {
header('HTTP/1.1 403 Forbidden');
die("Invalid Request");
}
$this->show_message("Application Error ($code): $message", 'error');
$this->remote_response();
exit;
}
/**
* Send an AJAX response with executable JS code
*
* @param string $add Additional JS code
* @param boolean True if output buffer should be flushed
* @return void
* @deprecated
*/
protected function remote_response($add='')
{
static $s_header_sent = false;
if (!$s_header_sent) {
$s_header_sent = true;
$this->nocacheing_headers();
header('Content-Type: text/plain; charset=' . $this->get_charset());
}
// unset default env vars
unset($this->env['task'], $this->env['action'], $this->env['comm_path']);
$rcmail = rcmail::get_instance();
$response['action'] = $rcmail->action;
if ($unlock = rcube_utils::get_input_value('_unlock', rcube_utils::INPUT_GPC)) {
$response['unlock'] = $unlock;
}
if (!empty($this->env))
$response['env'] = $this->env;
if (!empty($this->texts))
$response['texts'] = $this->texts;
// send function calls
$response['exec'] = $this->get_js_commands() . $add;
if (!empty($this->callbacks))
$response['callbacks'] = $this->callbacks;
// trigger generic hook where plugins can put additional content to the response
$hook = $this->app->plugins->exec_hook("render_response", array('response' => $response));
// save some memory
$response = $hook['response'];
unset($hook['response']);
echo self::json_serialize($response);
}
/**
* Return executable javascript code for all registered commands
*
* @return string $out
*/
protected function get_js_commands()
{
$out = '';
foreach ($this->commands as $i => $args) {
$method = array_shift($args);
foreach ($args as $i => $arg) {
$args[$i] = self::json_serialize($arg);
}
$out .= sprintf(
"this.%s(%s);\n",
preg_replace('/^parent\./', '', $method),
implode(',', $args)
);
}
return $out;
}
}

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