aboutsummaryrefslogtreecommitdiffstats
path: root/library/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php
diff options
context:
space:
mode:
Diffstat (limited to 'library/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php')
-rw-r--r--library/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php157
1 files changed, 0 insertions, 157 deletions
diff --git a/library/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php b/library/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php
deleted file mode 100644
index 4580ef5a9..000000000
--- a/library/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php
+++ /dev/null
@@ -1,157 +0,0 @@
-<?php
-
-/* W3C says:
- [ // adjective and number must be in correct order, even if
- // you could switch them without introducing ambiguity.
- // some browsers support that syntax
- [
- <percentage> | <length> | left | center | right
- ]
- [
- <percentage> | <length> | top | center | bottom
- ]?
- ] |
- [ // this signifies that the vertical and horizontal adjectives
- // can be arbitrarily ordered, however, there can only be two,
- // one of each, or none at all
- [
- left | center | right
- ] ||
- [
- top | center | bottom
- ]
- ]
- top, left = 0%
- center, (none) = 50%
- bottom, right = 100%
-*/
-
-/* QuirksMode says:
- keyword + length/percentage must be ordered correctly, as per W3C
-
- Internet Explorer and Opera, however, support arbitrary ordering. We
- should fix it up.
-
- Minor issue though, not strictly necessary.
-*/
-
-// control freaks may appreciate the ability to convert these to
-// percentages or something, but it's not necessary
-
-/**
- * Validates the value of background-position.
- */
-class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
-{
-
- /**
- * @type HTMLPurifier_AttrDef_CSS_Length
- */
- protected $length;
-
- /**
- * @type HTMLPurifier_AttrDef_CSS_Percentage
- */
- protected $percentage;
-
- public function __construct()
- {
- $this->length = new HTMLPurifier_AttrDef_CSS_Length();
- $this->percentage = new HTMLPurifier_AttrDef_CSS_Percentage();
- }
-
- /**
- * @param string $string
- * @param HTMLPurifier_Config $config
- * @param HTMLPurifier_Context $context
- * @return bool|string
- */
- public function validate($string, $config, $context)
- {
- $string = $this->parseCDATA($string);
- $bits = explode(' ', $string);
-
- $keywords = array();
- $keywords['h'] = false; // left, right
- $keywords['v'] = false; // top, bottom
- $keywords['ch'] = false; // center (first word)
- $keywords['cv'] = false; // center (second word)
- $measures = array();
-
- $i = 0;
-
- $lookup = array(
- 'top' => 'v',
- 'bottom' => 'v',
- 'left' => 'h',
- 'right' => 'h',
- 'center' => 'c'
- );
-
- foreach ($bits as $bit) {
- if ($bit === '') {
- continue;
- }
-
- // test for keyword
- $lbit = ctype_lower($bit) ? $bit : strtolower($bit);
- if (isset($lookup[$lbit])) {
- $status = $lookup[$lbit];
- if ($status == 'c') {
- if ($i == 0) {
- $status = 'ch';
- } else {
- $status = 'cv';
- }
- }
- $keywords[$status] = $lbit;
- $i++;
- }
-
- // test for length
- $r = $this->length->validate($bit, $config, $context);
- if ($r !== false) {
- $measures[] = $r;
- $i++;
- }
-
- // test for percentage
- $r = $this->percentage->validate($bit, $config, $context);
- if ($r !== false) {
- $measures[] = $r;
- $i++;
- }
- }
-
- if (!$i) {
- return false;
- } // no valid values were caught
-
- $ret = array();
-
- // first keyword
- if ($keywords['h']) {
- $ret[] = $keywords['h'];
- } elseif ($keywords['ch']) {
- $ret[] = $keywords['ch'];
- $keywords['cv'] = false; // prevent re-use: center = center center
- } elseif (count($measures)) {
- $ret[] = array_shift($measures);
- }
-
- if ($keywords['v']) {
- $ret[] = $keywords['v'];
- } elseif ($keywords['cv']) {
- $ret[] = $keywords['cv'];
- } elseif (count($measures)) {
- $ret[] = array_shift($measures);
- }
-
- if (empty($ret)) {
- return false;
- }
- return implode(' ', $ret);
- }
-}
-
-// vim: et sw=4 sts=4