justify-items per https://www.w3.org/TR/2018/WD-css-align-3-20180423/#propdef-justify-items

Author: ylafon

org/w3c/css/properties/CSS3Properties.properties

@@ -108,6 +108,7 @@ grid-template-rows:                     org.w3c.css.properties.css3.CssGridTempl
 # align
 row-gap:                                org.w3c.css.properties.css3.CssRowGap
 gap:                                    org.w3c.css.properties.css3.CssGap
+justify-items:                          org.w3c.css.properties.css3.CssJustifyItems
 justify-self:                           org.w3c.css.properties.css3.CssJustifySelf
 place-content:                          org.w3c.css.properties.css3.CssPlaceContent
 place-self:                             org.w3c.css.properties.css3.CssPlaceSelf

org/w3c/css/properties/CSS3SVGProperties.properties

@@ -165,6 +165,7 @@ grid-template-rows:                     org.w3c.css.properties.css3.CssGridTempl
 # align
 row-gap:                                org.w3c.css.properties.css3.CssRowGap
 gap:                                    org.w3c.css.properties.css3.CssGap
+justify-items:                          org.w3c.css.properties.css3.CssJustifyItems
 justify-self:                           org.w3c.css.properties.css3.CssJustifySelf
 place-content:                          org.w3c.css.properties.css3.CssPlaceContent
 place-self:                             org.w3c.css.properties.css3.CssPlaceSelf

org/w3c/css/properties/css/CssJustifyItems.java

@@ -0,0 +1,116 @@
+//
+// Author: Yves Lafon <ylafon@w3.org>
+//
+// (c) COPYRIGHT MIT, ERCIM, Keio, Beihang, 2018.
+// Please first read the full copyright statement in file COPYRIGHT.html
+package org.w3c.css.properties.css;
+
+import org.w3c.css.parser.CssStyle;
+import org.w3c.css.properties.css3.Css3Style;
+import org.w3c.css.util.ApplContext;
+import org.w3c.css.util.InvalidParamException;
+import org.w3c.css.values.CssExpression;
+import org.w3c.css.values.CssValue;
+
+/**
+ * @since CSS3
+ */
+public class CssJustifyItems extends CssProperty {
+
+    public CssValue value;
+
+    /**
+     * Create a new CssJustifyItems
+     */
+    public CssJustifyItems() {
+    }
+
+    /**
+     * Creates a new CssJustifyItems
+     *
+     * @param expression The expression for this property
+     * @throws org.w3c.css.util.InvalidParamException
+     *          Expressions are incorrect
+     */
+    public CssJustifyItems(ApplContext ac, CssExpression expression, boolean check)
+            throws InvalidParamException {
+        throw new InvalidParamException("value",
+                expression.getValue().toString(),
+                getPropertyName(), ac);
+    }
+
+    public CssJustifyItems(ApplContext ac, CssExpression expression)
+            throws InvalidParamException {
+        this(ac, expression, false);
+    }
+
+    /**
+     * Returns the value of this property
+     */
+    public Object get() {
+        return value;
+    }
+
+
+    /**
+     * Returns the name of this property
+     */
+    public final String getPropertyName() {
+        return "justify-items";
+    }
+
+    /**
+     * Returns true if this property is "softly" inherited
+     * e.g. his value is equals to inherit
+     */
+    public boolean isSoftlyInherited() {
+        return value.equals(inherit);
+    }
+
+    /**
+     * Returns a string representation of the object.
+     */
+    public String toString() {
+        return value.toString();
+    }
+
+    /**
+     * Add this property to the CssStyle.
+     *
+     * @param style The CssStyle
+     */
+    public void addToStyle(ApplContext ac, CssStyle style) {
+        Css3Style s = (Css3Style) style;
+        if (s.cssJustifyItems != null) {
+            style.addRedefinitionWarning(ac, this);
+        }
+        s.cssJustifyItems = this;
+    }
+
+
+    /**
+     * Compares two properties for equality.
+     *
+     * @param property The other property.
+     */
+    public boolean equals(CssProperty property) {
+        return (property instanceof CssJustifyItems &&
+                value.equals(((CssJustifyItems) property).value));
+    }
+
+
+    /**
+     * Get this property in the style.
+     *
+     * @param style   The style where the property is
+     * @param resolve if true, resolve the style to find this property
+     */
+    public CssProperty getPropertyInStyle(CssStyle style, boolean resolve) {
+        if (resolve) {
+            return ((Css3Style) style).getJustifyItems();
+        } else {
+            return ((Css3Style) style).cssJustifyItems;
+        }
+    }
+}
+

org/w3c/css/properties/css3/Css3Style.java

@@ -109,6 +109,7 @@
 import org.w3c.css.properties.css.CssInitialLetterWrap;
 import org.w3c.css.properties.css.CssIsolation;
 import org.w3c.css.properties.css.CssJustifyContent;
+import org.w3c.css.properties.css.CssJustifyItems;
 import org.w3c.css.properties.css.CssJustifySelf;
 import org.w3c.css.properties.css.CssLightingColor;
 import org.w3c.css.properties.css.CssLineBreak;
@@ -474,8 +475,17 @@ public class Css3Style extends ATSCStyle {
     public CssJustifySelf cssJustifySelf;
     public CssPlaceSelf cssPlaceSelf;
     public CssPlaceContent cssPlaceContent;
+    public CssJustifyItems cssJustifyItems;
 
-
+    public CssJustifyItems getJustifyItems() {
+        if (cssJustifyItems == null) {
+            cssJustifyItems =
+                    (CssJustifyItems) style.CascadingOrder(new CssJustifyItems(),
+                            style, selector);
+        }
+        return cssJustifyItems;
+    }
+    
     public CssPlaceContent getPlaceContent() {
         if (cssPlaceContent == null) {
             cssPlaceContent =