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|
<?php
/*
+-----------------------------------------------------------------------+
| program/include/rcube_output.php |
| |
| This file is part of the Roundcube PHP suite |
| Copyright (C) 2005-2012 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. |
| CONTENTS: |
| Abstract class for output generation |
| |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
| Author: Aleksander Machniak <alec@alec.pl> |
+-----------------------------------------------------------------------+
$Id$
*/
/**
* Class for output generation
*
* @package HTML
*/
abstract class rcube_output
{
public $browser;
public $type = 'html';
public $ajax_call = false;
public $framed = false;
protected $app;
protected $config;
protected $charset = RCMAIL_CHARSET;
protected $env = array();
protected $pagetitle = '';
protected $object_handlers = array();
/**
* Object constructor
*/
public function __construct($task = null, $framed = false)
{
$this->app = rcmail::get_instance();
$this->config = $this->app->config;
$this->browser = new rcube_browser();
}
/**
* Setter for page title
*
* @param string $title Page title
*/
public function set_pagetitle($title)
{
$this->pagetitle = $title;
}
/**
* Setter for output charset.
* To be specified in a meta tag and sent as http-header
*
* @param string $charset Charset name
*/
public function set_charset($charset)
{
$this->charset = $charset;
}
/**
* Getter for output charset
*
* @return string Output charset name
*/
public function get_charset()
{
return $this->charset;
}
/**
* Getter for the current skin path property
*/
public function get_skin_path()
{
return $this->config->get('skin_path');
}
/**
* Set environment variable
*
* @param string $name Property name
* @param mixed $value Property value
*/
public function set_env($name, $value)
{
$this->env[$name] = $value;
}
/**
* Environment variable getter.
*
* @param string $name Property name
*
* @return mixed Property value
*/
public function get_env($name)
{
return $this->env[$name];
}
/**
* Delete all stored env variables and commands
*/
public function reset()
{
$this->env = array();
$this->object_handlers = array();
$this->pagetitle = '';
}
/**
* Call a client method
*
* @param string Method to call
* @param ... Additional arguments
*/
abstract function command();
/**
* Add a localized label to the client environment
*/
abstract function add_label();
/**
* 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 $timeout Message displaying time in seconds
*/
abstract function show_message($message, $type = 'notice', $vars = null, $override = true, $timeout = 0);
/**
* Redirect to a certain url.
*
* @param mixed $p Either a string with the action or url parameters as key-value pairs
* @param int $delay Delay in seconds
*/
abstract function redirect($p = array(), $delay = 1);
/**
* Send output to the client.
*/
abstract function send();
/**
* Register a template object handler
*
* @param string Object name
* @param string Function name to call
* @return void
*/
public function add_handler($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, $arr);
}
/**
* Send HTTP headers to prevent caching a page
*/
public function nocacheing_headers()
{
if (headers_sent()) {
return;
}
header("Expires: ".gmdate("D, d M Y H:i:s")." GMT");
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
// Request browser to disable DNS prefetching (CVE-2010-0464)
header("X-DNS-Prefetch-Control: off");
// We need to set the following headers to make downloads work using IE in HTTPS mode.
if ($this->browser->ie && rcube_ui::https_check()) {
header('Pragma: private');
header("Cache-Control: private, must-revalidate");
}
else {
header("Cache-Control: private, no-cache, must-revalidate, post-check=0, pre-check=0");
header("Pragma: no-cache");
}
}
/**
* Show error page and terminate script execution
*
* @param int $code Error code
* @param string $message Error message
*/
public function raise_error($code, $message)
{
// STUB: to be overloaded by specific output classes
fputs(STDERR, "Error $code: $message\n");
exit(-1);
}
/**
* Convert a variable into a javascript object notation
*
* @param mixed Input value
*
* @return string Serialized JSON string
*/
public static function json_serialize($input)
{
$input = rcube_charset::clean($input);
// sometimes even using rcube_charset::clean() the input contains invalid UTF-8 sequences
// that's why we have @ here
return @json_encode($input);
}
}
|
