/**
* Merges all background properties
* @param array $input_css
* @return array
* @version 1.0
* @see dissolve_short_bg()
* @todo full CSS 3 compliance
*/
public function merge_bg($input_css)
{
$background_prop_default =& $GLOBALS['csstidy']['background_prop_default'];
// Max number of background images. CSS3 not yet fully implemented
$number_of_values = @max(count(self::explode_ws(',', $input_css['background-image'])), count(self::explode_ws(',', $input_css['background-color'])), 1);
// Array with background images to check if BG image exists
$bg_img_array = @self::explode_ws(',', Diglin_Csstidy_Core::gvw_important($input_css['background-image']));
$new_bg_value = '';
$important = '';
for ($i = 0; $i < $number_of_values; $i++) {
foreach ($background_prop_default as $bg_property => $default_value) {
// Skip if property does not exist
if (!isset($input_css[$bg_property])) {
continue;
}
$cur_value = $input_css[$bg_property];
// Skip some properties if there is no background image
if ((!isset($bg_img_array[$i]) || $bg_img_array[$i] === 'none') && ($bg_property === 'background-size' || $bg_property === 'background-position' || $bg_property === 'background-attachment' || $bg_property === 'background-repeat')) {
continue;
}
// Remove !important
if (Diglin_Csstidy_Core::is_important($cur_value)) {
$important = ' !important';
$cur_value = Diglin_Csstidy_Core::gvw_important($cur_value);
}
// Do not add default values
if ($cur_value === $default_value) {
continue;
}
$temp = self::explode_ws(',', $cur_value);
if (isset($temp[$i])) {
if ($bg_property == 'background-size') {
$new_bg_value .= '(' . $temp[$i] . ') ';
} else {
$new_bg_value .= $temp[$i] . ' ';
}
}
}
$new_bg_value = trim($new_bg_value);
if ($i != $number_of_values - 1) {
$new_bg_value .= ',';
}
}
// Delete all background-properties
foreach ($background_prop_default as $bg_property => $default_value) {
unset($input_css[$bg_property]);
}
// Add new background property
if ($new_bg_value !== '') {
$input_css['background'] = $new_bg_value . $important;
}
return $input_css;
}
