resources: Remove deprecated 'jquery.placeholder' module

[lhc/web/wiklou.git] / resources / src / mediawiki.less / mediawiki.mixins.less

diff --git a/resources/src/mediawiki.less/mediawiki.mixins.less b/resources/src/mediawiki.less/mediawiki.mixins.less
index 4cca1a6..ea0b959 100644 (file)
--- a/resources/src/mediawiki.less/mediawiki.mixins.less
+++ b/resources/src/mediawiki.less/mediawiki.mixins.less
@@ -1,7 +1,7 @@
 // Common Less mixin library for MediaWiki
 //
 // By default the folder containing this file is included in $wgResourceLoaderLESSImportPaths,
-// which makes this file importable by all less files via '@import "mediawiki.mixins";'.
+// which makes this file importable by all less files via `@import 'mediawiki.mixins';`.
 //
 // The mixins included below are considered a public interface for MediaWiki extensions.
 // The signatures of parametrized mixins should be kept as stable as possible.
@@ -42,6 +42,12 @@
        background-image: -o-linear-gradient( transparent, transparent ), url( @fallback );
 }
 
+// Shorthand for background-image-svg. Use if your PNG and SVG have the same name
+// and only if you cannot use ResourceLoaderImage module for some particular reason.
+.background-image-svg-quick( @url ) {
+       .background-image-svg( ~'@{url}.svg', ~'@{url}.png' );
+}
+
 .list-style-image( @url ) {
        list-style-image: e( '/* @embed */' ) url( @url );
 }
@@ -52,12 +58,32 @@
        list-style-image: e( '/* @embed */' ) url( @fallback ) e( '\9' );
 }
 
+.transform( @value ) {
+       -webkit-transform: @value; // Safari 3.1-8.0, iOS 3.2-8.4, Android 2.1-4.4.4
+       -moz-transform: @value; // Firefox 3.5-15
+       transform: @value; // Chrome 36+, Firefox 16+, IE 10+, Safari 9+, Opera 23+, iOS 9.2+, Android 5+
+}
+
 .transition( @value ) {
        -webkit-transition: @value; // Safari 3.1-6.0, iOS 3.2-6.1, Android 2.1-4.3
        -moz-transition: @value; // Firefox 4-15
        transition: @value; // Chrome 26+, Firefox 16+, IE 10+, Safari 6.1+, Opera 12.1+, iOS 7+, Android 4.4+
 }
 
+// Provide a hardware accelerated transform transition
+// We can't use `.transition()` because WebKit requires `-webkit-` prefix before `transform`
+// Example usage: `.transition-transform( 1s, opacity 2s );`
+// First parameter is additional options for `transform` transition commencing with
+// duration property @see https://www.w3.org/TR/css3-transitions/#transition-duration-property
+// and remaining parameters are additional transitions."
+.transition-transform( ... ) {
+       -webkit-backface-visibility: hidden; // Older Webkit browsers: Promote element to a composite layer & involve the GPU
+
+       -webkit-transition: -webkit-transform @arguments; // Safari 3.1-8, iOS 3.2-8.4, Android 2.1-4.4.4
+       -moz-transition: -moz-transform @arguments; // Firefox 4-15 for `-moz-transition`
+       transition: transform @arguments; // Chrome 36+, Firefox 16+, IE 10+, Safari 9+, Opera 12.1+, iOS 9.2+, Android 36+
+}
+
 .box-sizing( @value ) {
        -webkit-box-sizing: @value; // Safari 3.1-5.0, iOS 3.2-4.3, Android 2.1-3.0
        -moz-box-sizing: @value; // Firefox 4-28,
@@ -88,9 +114,9 @@
 }
 
 .flex-display( @display: flex ) {
-       display: ~"-webkit-@{display}"; // iOS 6-, Safari 3.1-6
-       display: ~"-moz-@{display}"; // Firefox 21-
-       display: ~"-ms-@{display}box"; // IE 10
+       display: ~'-webkit-@{display}'; // iOS 6-, Safari 3.1-6
+       display: ~'-moz-@{display}'; // Firefox 21-
+       display: ~'-ms-@{display}box'; // IE 10
        display: @display;
 }
 
@@ -145,17 +171,13 @@
        &::placeholder {
                @rules();
        }
-       // For inputs that use jquery.placeholder.js e.g. IE9
-       &.placeholder {
-               @rules();
-       }
 }
 /* stylelint-enable selector-no-vendor-prefix, at-rule-no-unknown */
 
 // Screen Reader Helper Mixin
 .mixin-screen-reader-text() {
        display: block;
-       position: absolute !important;
+       position: absolute !important; /* stylelint-disable-line declaration-no-important */
        clip: rect( 1px, 1px, 1px, 1px );
        width: 1px;
        height: 1px;