Android: Add Default and Clear actions for controllers

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/model/controlleremu/EmulatedController.java

@@ -31,6 +31,10 @@ public class EmulatedController
 
   public native void updateSingleControlReference(ControlReference controlReference);
 
+  public native void loadDefaultSettings();
+
+  public native void clearSettings();
+
   public static native EmulatedController getGcPad(int controllerIndex);
 
   public static native EmulatedController getWiimote(int controllerIndex);

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsFragmentPresenter.java

@@ -1213,6 +1213,13 @@ public final class SettingsFragmentPresenter
         mView.setMappingAllDevices(newValue);
       }
     }, R.string.input_device_all_devices, R.string.input_device_all_devices_description));
+
+    sl.add(new RunRunnable(mContext, R.string.input_reset_to_default,
+            R.string.input_reset_to_default_description, R.string.input_reset_warning, 0, true,
+            () -> loadDefaultControllerSettings(controller)));
+
+    sl.add(new RunRunnable(mContext, R.string.input_clear, R.string.input_clear_description,
+            R.string.input_reset_warning, 0, true, () -> clearControllerSettings(controller)));
   }
 
   /**
@@ -1280,6 +1287,18 @@ public final class SettingsFragmentPresenter
     }
   }
 
+  private void loadDefaultControllerSettings(EmulatedController controller)
+  {
+    controller.loadDefaultSettings();
+    mView.getAdapter().notifyAllSettingsChanged();
+  }
+
+  private void clearControllerSettings(EmulatedController controller)
+  {
+    controller.clearSettings();
+    mView.getAdapter().notifyAllSettingsChanged();
+  }
+
   private static int getLogVerbosityEntries()
   {
     // Value obtained from LogLevel in Common/Logging/Log.h

Source/Android/app/src/main/res/values/strings.xml

@@ -30,6 +30,11 @@
     <string name="input_device">Device</string>
     <string name="input_device_all_devices">Create Mappings for Other Devices</string>
     <string name="input_device_all_devices_description">Detects inputs from all devices, not just the selected device.</string>
+    <string name="input_reset_to_default">Default</string>
+    <string name="input_reset_to_default_description">Reset settings for this controller to the default.</string>
+    <string name="input_clear">Clear</string>
+    <string name="input_clear_description">Clear settings for this controller.</string>
+    <string name="input_reset_warning">Are you sure? Your current controller settings will be deleted.</string>
 
     <string name="input_binding">Input Binding</string>
     <string name="input_binding_description">Press or move an input to bind it to %1$s.</string>

Source/Android/jni/Input/EmulatedController.cpp

@@ -3,6 +3,7 @@
 
 #include <jni.h>
 
+#include "Common/IniFile.h"
 #include "Core/HW/GCPad.h"
 #include "Core/HW/Wiimote.h"
 #include "Core/HW/WiimoteEmu/WiimoteEmu.h"
@@ -71,6 +72,29 @@ Java_org_dolphinemu_dolphinemu_features_input_model_controlleremu_EmulatedContro
       g_controller_interface, ControlReferenceFromJava(env, control_reference));
 }
 
+JNIEXPORT void JNICALL
+Java_org_dolphinemu_dolphinemu_features_input_model_controlleremu_EmulatedController_loadDefaultSettings(
+    JNIEnv* env, jobject obj)
+{
+  ControllerEmu::EmulatedController* controller = EmulatedControllerFromJava(env, obj);
+
+  controller->LoadDefaults(g_controller_interface);
+  controller->UpdateReferences(g_controller_interface);
+}
+
+JNIEXPORT void JNICALL
+Java_org_dolphinemu_dolphinemu_features_input_model_controlleremu_EmulatedController_clearSettings(
+    JNIEnv* env, jobject obj)
+{
+  ControllerEmu::EmulatedController* controller = EmulatedControllerFromJava(env, obj);
+
+  // Loading an empty IniFile section clears everything.
+  IniFile::Section section;
+
+  controller->LoadConfig(&section);
+  controller->UpdateReferences(g_controller_interface);
+}
+
 JNIEXPORT jobject JNICALL
 Java_org_dolphinemu_dolphinemu_features_input_model_controlleremu_EmulatedController_getGcPad(
     JNIEnv* env, jclass, jint controller_index)