Added Clear Formatting button on Android Viewer

Change-Id: If576aaf3e5095e660219fed9f5e11971c9a73469
Signed-off-by: Mert Tumer <merttumer7@gmail.com>
Reviewed-on: https://gerrit.libreoffice.org/59293
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

android/source/res/drawable/ic_format_clear_black_24dp.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M3.27,5L2,6.27l6.97,6.97L6.5,19h3l1.57,-3.66L16.73,21 18,19.73 3.55,5.27 3.27,5zM6,5v0.18L8.82,8h2.4l-0.72,1.68 2.1,2.1L14.21,8H20V5H6z"/>
+</vector>

android/source/res/layout/toolbar_bottom.xml

@@ -107,6 +107,16 @@
                                         android:paddingTop="12dp"
                                         android:src="@drawable/ic_format_strikethrough" />
 
+                                    <ImageButton
+                                        android:id="@+id/button_clearformatting"
+                                        android:layout_width="0dp"
+                                        android:layout_height="wrap_content"
+                                        android:layout_weight="0.25"
+                                        android:background="@drawable/image_button_background"
+                                        android:paddingBottom="12dp"
+                                        android:paddingTop="12dp"
+                                        app:srcCompat="@drawable/ic_format_clear_black_24dp" />
+
                                 </LinearLayout>
 
                                 <Spinner

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

@@ -53,6 +53,7 @@ class FormattingController implements View.OnClickListener {
         mContext.findViewById(R.id.button_italic).setOnClickListener(this);
         mContext.findViewById(R.id.button_strikethrough).setOnClickListener(this);
         mContext.findViewById(R.id.button_underlined).setOnClickListener(this);
+        mContext.findViewById(R.id.button_clearformatting).setOnClickListener(this);
 
         mContext.findViewById(R.id.button_align_left).setOnClickListener(this);
         mContext.findViewById(R.id.button_align_center).setOnClickListener(this);
@@ -102,8 +103,11 @@ class FormattingController implements View.OnClickListener {
             case R.id.button_strikethrough:
                 LOKitShell.sendEvent(new LOEvent(LOEvent.UNO_COMMAND, ".uno:Strikeout"));
                 break;
+            case R.id.button_clearformatting:
+                LOKitShell.sendEvent(new LOEvent(LOEvent.UNO_COMMAND, ".uno:ResetAttributes"));
+                break;
             case R.id.button_underlined:
-                LOKitShell.sendEvent(new LOEvent(LOEvent.UNO_COMMAND, ".uno:Underline"));
+                LOKitShell.sendEvent(new LOEvent(LOEvent.UNO_COMMAND, ".uno:UnderlineDouble"));
                 break;
             case R.id.button_align_left:
                 LOKitShell.sendEvent(new LOEvent(LOEvent.UNO_COMMAND, ".uno:LeftPara"));