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MDL-33504 css_optimiser: Added support for common media-queiries

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This commit is contained in:
Sam Hemelryk
2012-06-12 14:22:56 +12:00
parent 3daafb9295
commit ecad5058a0
2 changed files with 48 additions and 3 deletions
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lib/csslib.php
+14 -3
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@@ -566,14 +566,17 @@ class css_optimiser {
$currentprocess = self::PROCESSING_SELECTORS;
}
}
$buffer = '';
$currentatrule = false;
if ($currentatrule !== 'media') {
$buffer = '';
$currentatrule = false;
}
// continue 1: The switch processing chars
// continue 2: The switch processing the state
// continue 3: The for loop
continue 3;
case '{':
if ($currentatrule == 'media' && preg_match('#\s*@media\s*([a-zA-Z0-9]+(\s*,\s*[a-zA-Z0-9]+)*)#', $buffer, $matches)) {
if ($currentatrule == 'media' && preg_match('#\s*@media\s*([a-zA-Z0-9]+(\s*,\s*[a-zA-Z0-9]+)*)\s*{#', $buffer, $matches)) {
// Basic media declaration
$mediatypes = str_replace(' ', '', $matches[1]);
if (!array_key_exists($mediatypes, $medias)) {
$medias[$mediatypes] = new css_media($mediatypes);
@@ -581,6 +584,14 @@ class css_optimiser {
$currentmedia = $medias[$mediatypes];
$currentprocess = self::PROCESSING_SELECTORS;
$buffer = '';
} else if ($currentatrule == 'media' && preg_match('#\s*@media\s*([^{]+)#', $buffer, $matches)) {
// Advanced media query declaration http://www.w3.org/TR/css3-mediaqueries/
$mediatypes = $matches[1];
$hash = md5($mediatypes);
$medias[$hash] = new css_media($mediatypes);
$currentmedia = $medias[$hash];
$currentprocess = self::PROCESSING_SELECTORS;
$buffer = '';
} else if ($currentatrule == 'keyframes' && preg_match('#@((\-moz\-|\-webkit\-)?keyframes)\s*([^\s]+)#', $buffer, $matches)) {
$keyframefor = $matches[1];
$keyframename = $matches[3];