Support ActionBar in Dialogs

Dialogs planning on using an ActionBar must have an appropriate
theme. (Later on this will likely be default.)

Change-Id: I7fbf5f76eed3d10765fddeaf211e4decb4e89f87

api/current.xml

@@ -26353,6 +26353,17 @@
 <parameter name="id" type="int">
 </parameter>
 </method>
+<method name="getActionBar"
+ return="android.app.ActionBar"
+ abstract="false"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</method>
 <method name="getContext"
  return="android.content.Context"
  abstract="false"
@@ -213236,17 +213247,6 @@
  visibility="public"
 >
 </method>
-<method name="getVisibleTitleHeight"
- return="int"
- abstract="false"
- native="false"
- synchronized="false"
- static="false"
- final="false"
- deprecated="not deprecated"
- visibility="public"
->
-</method>
 <method name="getZoomControls"
  return="android.view.View"
  abstract="false"

core/java/android/app/Dialog.java

@@ -16,6 +16,7 @@
 
 package android.app;
 
+import com.android.internal.app.ActionBarImpl;
 import com.android.internal.policy.PolicyManager;
 
 import android.content.ComponentName;
@@ -27,9 +28,9 @@ import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
+import android.view.ActionMode;
 import android.view.ContextMenu;
 import android.view.ContextMenu.ContextMenuInfo;
-import android.view.ActionMode;
 import android.view.ContextThemeWrapper;
 import android.view.Gravity;
 import android.view.KeyEvent;
@@ -77,6 +78,7 @@ public class Dialog implements DialogInterface, Window.Callback,
     final WindowManager mWindowManager;
     Window mWindow;
     View mDecor;
+    private ActionBarImpl mActionBar;
     /**
      * This field should be made private, so it is hidden from the SDK.
      * {@hide}
@@ -177,6 +179,15 @@ public class Dialog implements DialogInterface, Window.Callback,
         return mContext;
     }
 
+    /**
+     * Retrieve the {@link ActionBar} attached to this dialog, if present.
+     *
+     * @return The ActionBar attached to the dialog or null if no ActionBar is present.
+     */
+    public ActionBar getActionBar() {
+        return mActionBar;
+    }
+
     /**
      * Sets the Activity that owns this dialog. An example use: This Dialog will
      * use the suggested volume control stream of the Activity.
@@ -228,6 +239,11 @@ public class Dialog implements DialogInterface, Window.Callback,
 
         onStart();
         mDecor = mWindow.getDecorView();
+
+        if (mActionBar == null && mWindow.hasFeature(Window.FEATURE_ACTION_BAR)) {
+            mActionBar = new ActionBarImpl(this);
+        }
+
         WindowManager.LayoutParams l = mWindow.getAttributes();
         if ((l.softInputMode
                 & WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION) == 0) {
@@ -834,12 +850,14 @@ public class Dialog implements DialogInterface, Window.Callback,
     }
 
     public ActionMode onStartActionMode(ActionMode.Callback callback) {
-        // TODO Support context modes in dialogs
+        if (mActionBar != null) {
+            return mActionBar.startActionMode(callback);
+        }
         return null;
     }
 
     /**
-     * @return The activity associated with this dialog, or null if there is no assocaited activity.
+     * @return The activity associated with this dialog, or null if there is no associated activity.
      */
     private ComponentName getAssociatedActivity() {
         Activity activity = mOwnerActivity;

core/java/com/android/internal/app/ActionBarImpl.java

@@ -24,8 +24,10 @@ import com.android.internal.widget.ActionBarView;
 
 import android.app.ActionBar;
 import android.app.Activity;
+import android.app.Dialog;
 import android.app.Fragment;
 import android.app.FragmentTransaction;
+import android.content.Context;
 import android.graphics.drawable.Drawable;
 import android.os.Handler;
 import android.view.ActionMode;
@@ -54,7 +56,9 @@ public class ActionBarImpl extends ActionBar {
     private static final int TAB_SWITCH_SHOW_HIDE = 0;
     private static final int TAB_SWITCH_ADD_REMOVE = 1;
 
+    private Context mContext;
     private Activity mActivity;
+    private Dialog mDialog;
 
     private ViewAnimator mAnimatorView;
     private ActionBarView mActionView;
@@ -88,8 +92,17 @@ public class ActionBarImpl extends ActionBar {
     };
 
     public ActionBarImpl(Activity activity) {
-        final View decor = activity.getWindow().getDecorView();
         mActivity = activity;
+        init(activity.getWindow().getDecorView());
+    }
+
+    public ActionBarImpl(Dialog dialog) {
+        mDialog = dialog;
+        init(dialog.getWindow().getDecorView());
+    }
+
+    private void init(View decor) {
+        mContext = decor.getContext();
         mActionView = (ActionBarView) decor.findViewById(com.android.internal.R.id.action_bar);
         mUpperContextView = (ActionBarContextView) decor.findViewById(
                 com.android.internal.R.id.action_context_bar);
@@ -109,23 +122,23 @@ public class ActionBarImpl extends ActionBar {
 
     @Override
     public void setStandardNavigationMode(int titleResId, int subtitleResId) {
-        setStandardNavigationMode(mActivity.getString(titleResId),
-                mActivity.getString(subtitleResId));
+        setStandardNavigationMode(mContext.getString(titleResId),
+                mContext.getString(subtitleResId));
     }
 
     @Override
     public void setStandardNavigationMode(int titleResId) {
-        setStandardNavigationMode(mActivity.getString(titleResId));
+        setStandardNavigationMode(mContext.getString(titleResId));
     }
 
     @Override
     public void setTitle(int resId) {
-        setTitle(mActivity.getString(resId));
+        setTitle(mContext.getString(resId));
     }
 
     @Override
     public void setSubtitle(int resId) {
-        setSubtitle(mActivity.getString(resId));
+        setSubtitle(mContext.getString(resId));
     }
 
     public void setCustomNavigationMode(View view) {
@@ -345,6 +358,10 @@ public class ActionBarImpl extends ActionBar {
 
     @Override
     public void setTabNavigationMode() {
+        if (mActivity == null) {
+            throw new IllegalStateException(
+                    "Tab navigation mode cannot be used outside of an Activity");
+        }
         mActionView.setNavigationMode(NAVIGATION_MODE_TABS);
     }
 
@@ -396,7 +413,7 @@ public class ActionBarImpl extends ActionBar {
 
         @Override
         public MenuInflater getMenuInflater() {
-            return new MenuInflater(mActivity);
+            return new MenuInflater(mContext);
         }
 
         @Override
@@ -485,7 +502,7 @@ public class ActionBarImpl extends ActionBar {
                 return true;
             }
 
-            new MenuPopupHelper(mActivity, subMenu).show();
+            new MenuPopupHelper(mContext, subMenu).show();
             return true;
         }