[TIMOB-17821] Android: Add Support for Custom View to ActionBar

android/titanium/src/java/org/appcelerator/titanium/TiC.java

@@ -3258,6 +3258,11 @@ public class TiC
 	 */
 	public static final String PROPERTY_CUSTOM = "custom";
 
+	/**
+	 * @module.api
+	 */
+	public static final String PROPERTY_CUSTOM_VIEW = "customView";
+
 	/**
 	 * @module.api
 	 */

android/titanium/src/java/org/appcelerator/titanium/proxy/ActionBarProxy.java

@@ -21,7 +21,7 @@
 import android.support.v7.app.AppCompatActivity;
 
 @SuppressWarnings("deprecation")
-@Kroll.proxy(propertyAccessors = { TiC.PROPERTY_ON_HOME_ICON_ITEM_SELECTED })
+@Kroll.proxy(propertyAccessors = { TiC.PROPERTY_ON_HOME_ICON_ITEM_SELECTED, TiC.PROPERTY_CUSTOM_VIEW })
 public class ActionBarProxy extends KrollProxy
 {
 	private static final int MSG_FIRST_ID = KrollProxy.MSG_LAST_ID + 1;
@@ -37,6 +37,7 @@ public class ActionBarProxy extends KrollProxy
 	private static final int MSG_SET_SUBTITLE = MSG_FIRST_ID + 109;
 	private static final int MSG_SET_DISPLAY_SHOW_HOME = MSG_FIRST_ID + 110;
 	private static final int MSG_SET_DISPLAY_SHOW_TITLE = MSG_FIRST_ID + 111;
+	private static final int MSG_SET_CUSTOM_VIEW = MSG_FIRST_ID + 112;
 	private static final String SHOW_HOME_AS_UP = "showHomeAsUp";
 	private static final String HOME_BUTTON_ENABLED = "homeButtonEnabled";
 	private static final String BACKGROUND_IMAGE = "backgroundImage";
@@ -378,6 +379,20 @@ private Drawable getDrawableFromUrl(String url)
 		return tfh.loadDrawable(imageUrl.resolve(), false);
 	}
 
+	private void handleSetCustomView(Object view)
+	{
+		if (view != null) {
+			if (view instanceof TiViewProxy) {
+				actionBar.setDisplayShowCustomEnabled(true);
+				actionBar.setCustomView(((TiViewProxy) view).getOrCreateView().getNativeView());
+			} else {
+				Log.w(TAG, "Invalid value passed for a custom view. Expected Ti.UI.View or null");
+			}
+		} else {
+			actionBar.setCustomView(null);
+		}
+	}
+
 	@Override
 	public boolean handleMessage(Message msg)
 	{
@@ -427,6 +442,9 @@ public boolean handleMessage(Message msg)
 			case MSG_SET_HOME_BUTTON_ENABLED:
 				handlesetHomeButtonEnabled(msg.getData().getBoolean(HOME_BUTTON_ENABLED));
 				return true;
+			case MSG_SET_CUSTOM_VIEW:
+				handleSetCustomView(msg.obj);
+				return true;
 		}
 		return super.handleMessage(msg);
 	}
@@ -445,6 +463,14 @@ public void onPropertyChanged(String name, Object value)
 				message.sendToTarget();
 			}
 		}
+		if (TiC.PROPERTY_CUSTOM_VIEW.equals(name)) {
+			if (TiApplication.isUIThread()) {
+				handleSetCustomView(value);
+			} else {
+				Message message = getMainHandler().obtainMessage(MSG_SET_CUSTOM_VIEW, value);
+				message.sendToTarget();
+			}
+		}
 		super.onPropertyChanged(name, value);
 	}
 

apidoc/Titanium/Android/ActionBar.yml

@@ -137,7 +137,7 @@ methods:
         See also:
         [hide](http://developer.android.com/reference/android/app/ActionBar.html#hide())
         in the Android API Reference.
-  
+
   - name: setDisplayShowHomeEnabled
     summary: Shows or hides the action bar home icon
     parameters:
@@ -235,3 +235,12 @@ properties:
   - name: title
     summary: Sets the title of the action bar.
     type: String
+
+  - name: customView
+    summary: Sets a view to be used for a custom navigation mode.
+    type: Titanium.UI.View
+    description: |
+        Inserts a custom view for navigation in the space
+        between the application's home button and menu actions.
+        The custom view is trimmed to fit the space available.
+    since: "7.1.0"