CSSJanus Class Reference

This is a PHP port of CSSJanus, a utility that transforms CSS style sheets written for LTR to RTL. More...

List of all members.

Static Public Member Functions
static	transform ($css, $swapLtrRtlInURL=false, $swapLeftRightInURL=false)
	Transform an LTR stylesheet to RTL.
Static Private Member Functions
static	buildPatterns ()
	Build patterns we can't define above because they depend on other patterns.
static	calculateNewBackgroundPosition ($matches)
	Callback for calculateNewBackgroundPosition()
static	fixBackgroundPosition ($css)
	Flip horizontal background percentages.
static	fixCursorProperties ($css)
	Flip East and West in rules like cursor: nw-resize;.
static	fixDirection ($css)
	Replace direction: ltr; with direction: rtl; and vice versa.
static	fixFourPartNotation ($css)
	Swap the second and fourth parts in four-part notation rules like padding: 1px 2px 3px 4px;.
static	fixLeftAndRight ($css)
	Flip rules like left: , padding-right: , etc.
static	fixLeftRightInURL ($css)
	Replace 'left' with 'right' and vice versa in background URLs.
static	fixLtrRtlInURL ($css)
	Replace 'ltr' with 'rtl' and vice versa in background URLs.
Static Private Attributes
static	$patterns

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Detailed Description

This is a PHP port of CSSJanus, a utility that transforms CSS style sheets written for LTR to RTL.

The original Python version of CSSJanus is Copyright 2008 by Google Inc. and is distributed under the Apache license. This PHP port is Copyright 2010 by Roan Kattouw and is dual-licensed under the GPL (as in the comment above) and the Apache (as in the original code) licenses.

Original code: http://code.google.com/p/cssjanus/source/browse/trunk/cssjanus.py License of original code: http://code.google.com/p/cssjanus/source/browse/trunk/LICENSE

Author:

Roan Kattouw

Definition at line 37 of file CSSJanus.php.

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Member Function Documentation

static CSSJanus::buildPatterns

(

)

[static, private]

Build patterns we can't define above because they depend on other patterns.

Definition at line 85 of file CSSJanus.php.

References $patterns.

Referenced by transform().

static CSSJanus::calculateNewBackgroundPosition

(

$

matches

)

[static, private]

Callback for calculateNewBackgroundPosition()

Parameters:

$matches

array

Returns:

string

Definition at line 291 of file CSSJanus.php.

References $matches.

static CSSJanus::fixBackgroundPosition

(

$

css

)

[static, private]

Flip horizontal background percentages.

Parameters:

$css

string

Returns:

string

Definition at line 270 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixCursorProperties

(

$

css

)

[static, private]

Flip East and West in rules like cursor: nw-resize;.

Parameters:

$css

string

Returns:

string

Definition at line 237 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixDirection

(

$

css

)

[static, private]

Replace direction: ltr; with direction: rtl; and vice versa.

The original implementation only does this inside body selectors and misses "body\n{\ndirection:ltr;\n}". This function does not have these problems.

See http://code.google.com/p/cssjanus/issues/detail?id=15 and TODO: URL

Parameters:

$css

string

Returns:

string

Definition at line 184 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixFourPartNotation

(

$

css

)

[static, private]

Swap the second and fourth parts in four-part notation rules like padding: 1px 2px 3px 4px;.

Unlike the original implementation, this function doesn't suffer from the bug where whitespace is not preserved when flipping four-part rules and four-part color rules with multiple whitespace characters between colors are not recognized. See http://code.google.com/p/cssjanus/issues/detail?id=16

Parameters:

$css

string

Returns:

string

Definition at line 258 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixLeftAndRight

(

$

css

)

[static, private]

Flip rules like left: , padding-right: , etc.

Parameters:

$css

string

Returns:

string

Definition at line 224 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixLeftRightInURL

(

$

css

)

[static, private]

Replace 'left' with 'right' and vice versa in background URLs.

Parameters:

$css

string

Returns:

string

Definition at line 211 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixLtrRtlInURL

(

$

css

)

[static, private]

Replace 'ltr' with 'rtl' and vice versa in background URLs.

Parameters:

$css

string

Returns:

string

Definition at line 198 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::transform	(	$	css,
		$	swapLtrRtlInURL = false,
		$	swapLeftRightInURL = false
	)		[static]

Transform an LTR stylesheet to RTL.

Parameters:

$css	String: stylesheet to transform
$swapLtrRtlInURL	Boolean: If true, swap 'ltr' and 'rtl' in URLs
$swapLeftRightInURL	Boolean: If true, swap 'left' and 'right' in URLs

Returns:

string Transformed stylesheet

Definition at line 130 of file CSSJanus.php.

References $css, buildPatterns(), fixBackgroundPosition(), fixCursorProperties(), fixDirection(), fixFourPartNotation(), fixLeftAndRight(), fixLeftRightInURL(), and fixLtrRtlInURL().

Referenced by ResourceLoaderUserCSSPrefsModule\getStyles(), ResourceLoaderWikiModule\getStyles(), ResourceLoaderFileModule\readStyleFile(), CSSJanusTest\testTransform(), CSSJanusTest\testTransformAdvanced(), and CSSJanusTest\testTransformBroken().

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Member Data Documentation

CSSJanus::$patterns [static, private]

Definition at line 39 of file CSSJanus.php.

Referenced by buildPatterns().

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The documentation for this class was generated from the following file:

• includes/libs/CSSJanus.php