Merge pull request #122 from mattiacci/will-change

Add support for will-change

Author: nschonni

src/css/Properties.js

@@ -517,6 +517,7 @@ var Properties = {
     "white-space-collapse"          : 1,
     "widows"                        : "<integer> | inherit",
     "width"                         : "<length> | <percentage> | <content-sizing> | auto | inherit",
+    "will-change"                   : { multi: "<ident>", comma: true },
     "word-break"                    : "normal | keep-all | break-all",
     "word-spacing"                  : "<length> | normal | inherit",
     "word-wrap"                     : "normal | break-word",

tests/css/Validation.js

@@ -932,6 +932,25 @@
         }
     }));
 
+    suite.add(new ValidationTestCase({
+        property: "will-change",
+
+        valid: [
+            "auto",
+            "scroll-position",
+            "contents",
+            "opacity",
+            "transform",
+            "opacity, transform",
+            "height, opacity, transform, width"
+        ],
+
+        invalid: {
+            "2px"               : "Expected (<ident>) but found '2px'.",
+            "opacity transform" : "Expected end of value but found 'transform'."
+        }
+    }));
+
     suite.add(new ValidationTestCase({
         property: "word-wrap",