Allow “color” attribute with link[rel="mask-icon"]

Fixes #174 Thanks @925dk & @XhmikosR

Relates to whatwg/html#110
Relates to whatwg/html#2230
Relates to jadu/pulsar#465

See also #483

CHANGELOG.md

@@ -4,6 +4,7 @@ changes to any options/interfaces the checker exposes for developers.
 
 # 17.3.0
 26 March 2017
+  - Allow “color” attribute with link[rel="mask-icon"]
   - Allow `meta[name]` to have `itemref`/`itemscope`/`itemtype`/`itemid`
   - Allow `allow-top-navigation-by-user-activation` in `iframe[sandbox]`
   - Stop hiding “sectioning roots” headings in “Heading-level outline”

schema/html5/common.rnc

@@ -341,6 +341,11 @@ common.attrs.other =
 			}+
 		}
 
+## color for <link rel="mask-icon"> and <meta name="theme-color">
+
+	common.data.color =
+		w:color
+
 ## MIME types
 
 	common.data.mimetype =

schema/html5/meta.rnc

@@ -162,6 +162,7 @@ datatypes w = "http://whattf.org/datatype-draft"
 		&	shared-hyperlink.attrs.type?
 		&	referrerpolicy?
 		&	link.attrs.sizes?
+		&	link.attrs.color?
 		#	link.attrs.title included in common.attrs
 		&	embedded.content.attrs.crossorigin?
 		&	(	common.attrs.aria.role.link
@@ -207,6 +208,10 @@ datatypes w = "http://whattf.org/datatype-draft"
 			attribute sizes {
 				w:string "any" | common.data.sizes
 			}
+		link.attrs.color =
+			attribute color {
+				common.data.color
+			}
 	link.inner =
 		( empty )
 

src/nu/validator/checker/schematronequiv/Assertions.java

@@ -2425,6 +2425,14 @@ else if ("bdo" == localName && atts.getIndex("", "dir") < 0) {
                             + " value \u201Cicon\u201D or the value"
                             + " \u201Capple-touch-icon\u201D.");
                 }
+                if (atts.getIndex("", "color") > -1 //
+                        && (!hasRel || (relList != null
+                                && !relList.contains("mask-icon")))) {
+                    err("A \u201Clink\u201D element with a"
+                            + " \u201Ccolor\u201D attribute must have a"
+                            + " \u201Crel\u201D attribute that contains"
+                            + " the value \u201Cmask-icon\u201D.");
+                }
                 if ((ancestorMask & BODY_MASK) != 0
                         && (relList != null
                                 && !(relList.contains("dns-prefetch")

src/nu/validator/datatype/Color.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2017 Mozilla Foundation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+package nu.validator.datatype;
+
+import org.relaxng.datatype.DatatypeException;
+
+public class Color extends AbstractDatatype {
+
+    public static final Color THE_INSTANCE = new Color();
+
+    public Color() {
+        super();
+    }
+
+    /**
+     * @see nu.validator.datatype.AbstractDatatype#checkValid(java.lang.CharSequence)
+     */
+    @Override
+    public void checkValid(CharSequence literal) throws DatatypeException {
+        // TODO Auto-generated method stub
+    }
+
+    /**
+     * @see nu.validator.datatype.AbstractDatatype#getName()
+     */
+    @Override
+    public String getName() {
+        return "color";
+    }
+
+}

src/nu/validator/datatype/Html5DatatypeLibrary.java

@@ -170,6 +170,8 @@ public Datatype createDatatype(String typeLocalName)
             return StringWithoutLineBreaks.THE_INSTANCE;
         } else if ("simple-color".equals(typeLocalName)) {
             return SimpleColor.THE_INSTANCE;
+        } else if ("color".equals(typeLocalName)) {
+            return Color.THE_INSTANCE;
         } else if ("time-datetime".equals(typeLocalName)) {
             return TimeDatetime.THE_INSTANCE;
         } else if ("svg-pathdata".equals(typeLocalName)) {

src/nu/validator/datatype/LinkRel.java

@@ -45,6 +45,7 @@ public final class LinkRel extends AbstractRel {
             registeredValues.add("help");
             registeredValues.add("icon");
             registeredValues.add("license");
+            registeredValues.add("mask-icon");
             registeredValues.add("next");
             registeredValues.add("pingback");
             registeredValues.add("preconnect");