android: add undo/redo to the main toolbar

Change-Id: I64f76d22018fcd8af2991933ba5ab2069f84181f

android/source/res/drawable/ic_redo.xml

+<?xml version="1.0" encoding="utf-8"?>
+
+<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
+    android:src="@drawable/ic_redo_black_24dp"
+    android:tint="@color/toolbar_forgeround"/>
\ No newline at end of file

android/source/res/drawable/ic_undo.xml

+<?xml version="1.0" encoding="utf-8"?>
+
+<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
+    android:src="@drawable/ic_undo_black_24dp"
+    android:tint="@color/toolbar_forgeround"/>
\ No newline at end of file

android/source/res/menu/main.xml

@@ -7,6 +7,18 @@
            tools:visible="true"
            android:visible="false">
 
+        <item android:id="@+id/action_undo"
+              android:title="@string/action_undo"
+              android:icon="@drawable/ic_undo"
+              android:orderInCategory="100"
+              app:showAsAction="always"/>
+
+        <item android:id="@+id/action_redo"
+              android:title="@string/action_redo"
+              android:icon="@drawable/ic_redo"
+              android:orderInCategory="100"
+              app:showAsAction="always"/>
+
         <item android:id="@+id/action_keyboard"
               android:title="@string/action_keyboard"
               android:icon="@drawable/ic_keyboard"

android/source/res/values/strings.xml

@@ -79,5 +79,8 @@
     <string name="server_url_and_port">URL and port of the ownCloud server.</string>
     <string name="user_name">User name</string>
     <string name="password">Password</string>
+    <string name="action_undo">Undo</string>
+    <string name="action_redo">Redo</string>
+
 
 </resources>

android/source/src/java/org/libreoffice/ToolbarController.java

@@ -129,6 +129,12 @@ public class ToolbarController implements Toolbar.OnMenuItemClickListener {
             case R.id.action_search:
                 mContext.showSearchToolbar();
                 return true;
+            case R.id.action_undo:
+                LOKitShell.sendEvent(new LOEvent(LOEvent.UNO_COMMAND, ".uno:Undo"));
+                return true;
+            case R.id.action_redo:
+                LOKitShell.sendEvent(new LOEvent(LOEvent.UNO_COMMAND, ".uno:Redo"));
+                return true;
         }
         return false;
     }