Allow the use of styles with LinearLayout, make "useLargestChild" attr public.

Change-Id: I044f3f5bd9b90c684ded7a37ff85e3aa8d15af96

core/java/android/view/LayoutInflater.java

@@ -379,7 +379,7 @@ public abstract class LayoutInflater {
                                 + "ViewGroup root and attachToRoot=true");
                     }
 
-                    rInflate(parser, root, attrs);
+                    rInflate(parser, root, attrs, false);
                 } else {
                     // Temp is the root view that was found in the xml
                     View temp = createViewFromTag(name, attrs);
@@ -404,7 +404,7 @@ public abstract class LayoutInflater {
                         System.out.println("-----> start inflating children");
                     }
                     // Inflate all children under temp
-                    rInflate(parser, temp, attrs);
+                    rInflate(parser, temp, attrs, true);
                     if (DEBUG) {
                         System.out.println("-----> done inflating children");
                     }
@@ -590,8 +590,8 @@ public abstract class LayoutInflater {
      * Recursive method used to descend down the xml hierarchy and instantiate
      * views, instantiate their children, and then call onFinishInflate().
      */
-    private void rInflate(XmlPullParser parser, View parent, final AttributeSet attrs)
-            throws XmlPullParserException, IOException {
+    private void rInflate(XmlPullParser parser, View parent, final AttributeSet attrs,
+            boolean finishInflate) throws XmlPullParserException, IOException {
 
         final int depth = parser.getDepth();
         int type;
@@ -618,12 +618,12 @@ public abstract class LayoutInflater {
                 final View view = createViewFromTag(name, attrs);
                 final ViewGroup viewGroup = (ViewGroup) parent;
                 final ViewGroup.LayoutParams params = viewGroup.generateLayoutParams(attrs);
-                rInflate(parser, view, attrs);
+                rInflate(parser, view, attrs, true);
                 viewGroup.addView(view, params);
             }
         }
 
-        parent.onFinishInflate();
+        if (finishInflate) parent.onFinishInflate();
     }
 
     private void parseRequestFocus(XmlPullParser parser, View parent)
@@ -674,7 +674,7 @@ public abstract class LayoutInflater {
 
                     if (TAG_MERGE.equals(childName)) {
                         // Inflate all children.
-                        rInflate(childParser, parent, childAttrs);
+                        rInflate(childParser, parent, childAttrs, false);
                     } else {
                         final View view = createViewFromTag(childName, childAttrs);
                         final ViewGroup group = (ViewGroup) parent;
@@ -699,7 +699,7 @@ public abstract class LayoutInflater {
                         }
 
                         // Inflate all children.
-                        rInflate(childParser, view, childAttrs);
+                        rInflate(childParser, view, childAttrs, true);
 
                         // Attempt to override the included layout's android:id with the
                         // one set on the <include /> tag itself.

core/java/android/widget/LinearLayout.java

@@ -40,6 +40,13 @@ import android.widget.RemoteViews.RemoteView;
  * <p>
  * Also see {@link LinearLayout.LayoutParams android.widget.LinearLayout.LayoutParams}
  * for layout attributes </p>
+ *
+ * @attr ref android.R.styleable#LinearLayout_baselineAligned
+ * @attr ref android.R.styleable#LinearLayout_baselineAlignedChildIndex
+ * @attr ref android.R.styleable#LinearLayout_gravity
+ * @attr ref android.R.styleable#LinearLayout_measureWithLargestChild
+ * @attr ref android.R.styleable#LinearLayout_orientation
+ * @attr ref android.R.styleable#LinearLayout_weightSum
  */
 @RemoteView
 public class LinearLayout extends ViewGroup {
@@ -112,7 +119,11 @@ public class LinearLayout extends ViewGroup {
     }
 
     public LinearLayout(Context context, AttributeSet attrs) {
-        super(context, attrs);
+        this(context, attrs, 0);
+    }
+    
+    public LinearLayout(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
 
         TypedArray a = 
             context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.LinearLayout);
@@ -137,8 +148,7 @@ public class LinearLayout extends ViewGroup {
         mBaselineAlignedChildIndex =
                 a.getInt(com.android.internal.R.styleable.LinearLayout_baselineAlignedChildIndex, -1);
 
-        // TODO: Better name, add Java APIs, make it public
-        mUseLargestChild = a.getBoolean(R.styleable.LinearLayout_useLargestChild, false);
+        mUseLargestChild = a.getBoolean(R.styleable.LinearLayout_measureWithLargestChild, false);
 
         a.recycle();
     }
@@ -167,6 +177,33 @@ public class LinearLayout extends ViewGroup {
         mBaselineAligned = baselineAligned;
     }
 
+    /**
+     * When true, all children with a weight will be considered having
+     * the minimum size of the largest child. If false, all children are
+     * measured normally.
+     * 
+     * @return True to measure children with a weight using the minimum
+     *         size of the largest child, false otherwise.
+     */
+    public boolean isMeasureWithLargestChildEnabled() {
+        return mUseLargestChild;
+    }
+
+    /**
+     * When set to true, all children with a weight will be considered having
+     * the minimum size of the largest child. If false, all children are
+     * measured normally.
+     * 
+     * Disabled by default.
+     * 
+     * @param enabled True to measure children with a weight using the
+     *        minimum size of the largest child, false otherwise.
+     */
+    @android.view.RemotableViewMethod
+    public void setMeasureWithLargestChildEnabled(boolean enabled) {
+        mUseLargestChild = enabled;
+    }
+
     @Override
     public int getBaseline() {
         if (mBaselineAlignedChildIndex < 0) {