Fix bug 5038368 - Rules for collapsing action views.

Make collapsing action views exclusive on small screens with unsplit
action bars.

Change-Id: I11cc220acc7b6acddd25f2500404b47bfb405d5c

core/java/com/android/internal/view/menu/ActionMenuPresenter.java

@@ -48,6 +48,7 @@ public class ActionMenuPresenter extends BaseMenuPresenter {
     private boolean mMaxItemsSet;
     private boolean mStrictWidthLimit;
     private boolean mWidthLimitSet;
+    private boolean mExpandedActionViewsExclusive;
 
     private int mMinCellSize;
 
@@ -124,6 +125,10 @@ public class ActionMenuPresenter extends BaseMenuPresenter {
         mMaxItemsSet = true;
     }
 
+    public void setExpandedActionViewsExclusive(boolean isExclusive) {
+        mExpandedActionViewsExclusive = isExclusive;
+    }
+
     @Override
     public MenuView getMenuView(ViewGroup root) {
         MenuView result = super.getMenuView(root);
@@ -326,6 +331,11 @@ public class ActionMenuPresenter extends BaseMenuPresenter {
             } else {
                 hasOverflow = true;
             }
+            if (mExpandedActionViewsExclusive && item.isActionViewExpanded()) {
+                // Overflow everything if we have an expanded action view and we're
+                // space constrained.
+                maxActions = 0;
+            }
         }
 
         // Reserve a spot for the overflow item if needed.

core/java/com/android/internal/widget/ActionBarView.java

@@ -345,11 +345,15 @@ public class ActionBarView extends AbsActionBarView {
         final LayoutParams layoutParams = new LayoutParams(LayoutParams.WRAP_CONTENT,
                 LayoutParams.MATCH_PARENT);
         if (!mSplitActionBar) {
+            mActionMenuPresenter.setExpandedActionViewsExclusive(
+                    getResources().getBoolean(
+                    com.android.internal.R.bool.action_bar_expanded_action_views_exclusive));
             builder.addMenuPresenter(mActionMenuPresenter);
             builder.addMenuPresenter(mExpandedMenuPresenter);
             menuView = (ActionMenuView) mActionMenuPresenter.getMenuView(this);
             addView(menuView, layoutParams);
         } else {
+            mActionMenuPresenter.setExpandedActionViewsExclusive(false);
             // Allow full screen width in split mode.
             mActionMenuPresenter.setWidthLimit(
                     getContext().getResources().getDisplayMetrics().widthPixels, true);

core/res/res/values-sw600dp/bools.xml

@@ -17,4 +17,5 @@
 <resources>
     <bool name="preferences_prefer_dual_pane">true</bool>
     <bool name="show_ongoing_ime_switcher">false</bool>
+    <bool name="action_bar_expanded_action_views_exclusive">false</bool>
 </resources>

core/res/res/values/bools.xml

@@ -19,4 +19,5 @@
     <bool name="split_action_bar_is_narrow">true</bool>
     <bool name="preferences_prefer_dual_pane">false</bool>
     <bool name="show_ongoing_ime_switcher">true</bool>
+    <bool name="action_bar_expanded_action_views_exclusive">true</bool>
 </resources>