add a AC (reset) button to the widget

- it does the same as long pressing the C in the app, however widgets cannot be long pressed

app/src/main/java/calculator/simplemobiletools/com/simple_calculator/CalculatorImpl.java

@@ -156,7 +156,7 @@ public class CalculatorImpl {
         baseValue = Double.parseDouble(newValue);
     }
 
-    public void handleLongClear() {
+    public void handleReset() {
         resetValues();
     }
 

app/src/main/java/calculator/simplemobiletools/com/simple_calculator/Constants.java

@@ -12,6 +12,7 @@ public class Constants {
     public static final String ROOT = "root";
     public static final String DECIMAL = "decimal";
     public static final String CLEAR = "clear";
+    public static final String RESET = "reset";
 
     public static final String ZERO = "zero";
     public static final String ONE = "one";

app/src/main/java/calculator/simplemobiletools/com/simple_calculator/MainActivity.java

@@ -65,7 +65,7 @@ public class MainActivity extends AppCompatActivity implements Calculator {
 
     @OnLongClick(R.id.btn_clear)
     public boolean clearLongClicked() {
-        calc.handleLongClear();
+        calc.handleReset();
         return true;
     }
 

app/src/main/java/calculator/simplemobiletools/com/simple_calculator/MyWidgetProvider.java

@@ -5,6 +5,7 @@ import android.appwidget.AppWidgetManager;
 import android.appwidget.AppWidgetProvider;
 import android.content.Context;
 import android.content.Intent;
+import android.view.View;
 import android.widget.RemoteViews;
 
 public class MyWidgetProvider extends AppWidgetProvider implements Calculator {
@@ -19,6 +20,7 @@ public class MyWidgetProvider extends AppWidgetProvider implements Calculator {
     public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
         widgetManager = appWidgetManager;
         remoteViews = new RemoteViews(context.getPackageName(), R.layout.activity_main);
+        remoteViews.setViewVisibility(R.id.btn_reset, View.VISIBLE);
         calc = new CalculatorImpl(this);
         widgetIds = appWidgetIds;
         cxt = context;
@@ -45,6 +47,7 @@ public class MyWidgetProvider extends AppWidgetProvider implements Calculator {
         setupIntent(Constants.POWER, R.id.btn_power);
         setupIntent(Constants.ROOT, R.id.btn_root);
         setupIntent(Constants.CLEAR, R.id.btn_clear);
+        setupIntent(Constants.RESET, R.id.btn_reset);
 
         appWidgetManager.updateAppWidget(appWidgetIds, remoteViews);
     }
@@ -98,6 +101,9 @@ public class MyWidgetProvider extends AppWidgetProvider implements Calculator {
             case Constants.CLEAR:
                 calc.handleClear();
                 break;
+            case Constants.RESET:
+                calc.handleReset();
+                break;
             case Constants.PLUS:
             case Constants.MINUS:
             case Constants.MULTIPLY:

app/src/main/res/layout/activity_main.xml

@@ -64,6 +64,15 @@
                 android:layout_height="match_parent"
                 android:layout_weight="1"
                 android:text="C"/>
+
+            <Button
+                android:id="@+id/btn_reset"
+                style="@style/MyButtonStyle"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:text="AC"
+                android:visibility="gone"/>
         </LinearLayout>
 
         <LinearLayout

app/src/test/java/calculator/simplemobiletools/com/simple_calculator/MainActivityTest.java

@@ -102,7 +102,7 @@ public class MainActivityTest {
     @Test
     public void clearBtnLongClick_resetsEverything() {
         calcResult(-1.2, Constants.PLUS, 3.4);
-        activity.getCalc().handleLongClear();
+        activity.getCalc().handleReset();
         handleOperation(Constants.PLUS);
         setDouble(3);
         activity.getCalc().handleResult();