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merge r3927, r3928, r3951, r3953 from trunk to branch 2.0

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r3927: Add Smarty's prefilter capability. see topic:16219 (FR).
r3928: Improve template prefilter functions
r3951: Allow to add prefilters, postfilters and output filters to templates.
r3953: Simplification of commit 3951.

git-svn-id: http://piwigo.org/svn/branches/2.0@3998 68402e56-0260-453c-a942-63ccdbb3a9ee
This commit is contained in:
patdenice
2009-10-09 01:00:33 +00:00
parent a44ceedea6
commit 7042db4041
1 changed files with 72 additions and 5 deletions
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77
include/template.class.php
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@@ -46,6 +46,9 @@ class Template {
// Template extents filenames for each template handle.
var $extents = array();
// Templates prefilter from external sources (plugins)
var $external_filters = array();
// used by html_head smarty block to add content before </head>
var $html_head_elements = array();
@@ -290,19 +293,19 @@ class Template {
$this->smarty->assign( 'TAG_INPUT_ENABLED',
((is_adviser()) ? 'disabled="disabled" onclick="return false;"' : ''));
$save_compile_id = $this->smarty->compile_id;
$this->load_external_filters($handle);
global $conf, $lang_info;
if ( $conf['compiled_template_cache_language'] and isset($lang_info['code']) )
{
$save_compile_id = $this->smarty->compile_id;
$this->smarty->compile_id .= '.'.$lang_info['code'];
}
$v = $this->smarty->fetch($this->files[$handle], null, null, false);
if (isset ($save_compile_id) )
{
$this->smarty->compile_id = $save_compile_id;
}
$this->smarty->compile_id = $save_compile_id;
$this->unload_external_filters($handle);
if ($return)
{
@@ -333,6 +336,7 @@ class Template {
} //else maybe error or warning ?
$this->html_head_elements = array();
}
echo $this->output;
$this->output='';
}
@@ -419,6 +423,68 @@ class Template {
}
}
/**
* This function allows to declare a Smarty prefilter from a plugin, thus allowing
* it to modify template source before compilation and without changing core files
* They will be processed by weight ascending.
* http://www.smarty.net/manual/en/advanced.features.prefilters.php
*/
function set_prefilter($handle, $callback, $weight=50)
{
$this->external_filters[$handle][$weight][] = array('prefilter', $callback);
ksort($this->external_filters[$handle]);
}
function set_postfilter($handle, $callback, $weight=50)
{
$this->external_filters[$handle][$weight][] = array('postfilter', $callback);
ksort($this->external_filters[$handle]);
}
function set_outputfilter($handle, $callback, $weight=50)
{
$this->external_filters[$handle][$weight][] = array('outputfilter', $callback);
ksort($this->external_filters[$handle]);
}
/**
* This function actually triggers the filters on the tpl files.
* Called in the parse method.
* http://www.smarty.net/manual/en/advanced.features.prefilters.php
*/
function load_external_filters($handle)
{
if (isset($this->external_filters[$handle]))
{
$compile_id = '';
foreach ($this->external_filters[$handle] as $filters)
{
foreach ($filters as $filter)
{
list($type, $callback) = $filter;
$compile_id .= $type.( is_array($callback) ? implode('', $callback) : $callback );
call_user_func(array($this->smarty, 'register_'.$type), $callback);
}
}
$this->smarty->compile_id .= '.'.base_convert(crc32($compile_id), 10, 36);
}
}
function unload_external_filters($handle)
{
if (isset($this->external_filters[$handle]))
{
foreach ($this->external_filters[$handle] as $filters)
{
foreach ($filters as $filter)
{
list($type, $callback) = $filter;
call_user_func(array($this->smarty, 'unregister_'.$type), $callback);
}
}
}
}
static function prefilter_white_space($source, &$smarty)
{
$ld = $smarty->left_delimiter;
@@ -465,6 +531,7 @@ class Template {
}
}
/**
* This class contains basic functions that can be called directly from the
* templates in the form $pwg->l10n('edit')