[Android] Refactor InputConfigFragment a little bit in preparation for the implementation of the new input overlay.

This moves all of the dialog handling into the actual MotionAlertDialog class itself. This is something I should have done a long time ago.
Also moved the Gamecube input binding preferences into their own PreferenceScreen.

Source/Android/res/values-ja/strings.xml

@@ -41,6 +41,7 @@
 
     <!-- Input Config Fragment -->
     <string name="input_settings">入力</string>
+    <string name="gamecube_bindings">ゲームキューブの入力バインディング</string>
     <string name="input_binding">入力バインディング</string>
     <string name="input_binding_descrip">%1$sにバインドするための入力を移動または押してください。</string>
     <string name="button_a">Aボタン</string>

Source/Android/res/values/strings.xml

@@ -41,6 +41,7 @@
 
     <!-- Input Config Fragment -->
     <string name="input_settings">Input</string>
+    <string name="gamecube_bindings">Gamecube Input Bindings</string>
     <string name="input_binding">Input Binding</string>
     <string name="input_binding_descrip">Press or move an input to bind it to %1$s.</string>
     <string name="button_a">Button A</string>

Source/Android/res/xml/input_prefs.xml

@@ -1,6 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
-<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
 
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+                  android:title="@string/input_settings">
+
+        <PreferenceScreen android:title="@string/gamecube_bindings">
             <Preference
                 android:key="InputA"
                 android:title="@string/button_a" />
@@ -81,3 +84,4 @@
                 android:key="InputR"
                 android:title="@string/trigger_right" />
         </PreferenceScreen>
+</PreferenceScreen>

Source/Android/src/org/dolphinemu/dolphinemu/settings/InputConfigFragment.java

@@ -6,7 +6,6 @@
 
 package org.dolphinemu.dolphinemu.settings;
 
-import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Fragment;
 import android.content.Context;
@@ -31,10 +30,6 @@ import org.dolphinemu.dolphinemu.R;
  */
 public final class InputConfigFragment extends PreferenceFragment
 {
-	private Activity m_activity;
-	private boolean firstEvent = true;
-	private static final ArrayList<Float> m_values = new ArrayList<Float>();
-
 	/**
 	 * Gets the descriptor for the given {@link InputDevice}.
 	 * 
@@ -92,15 +87,65 @@ public final class InputConfigFragment extends PreferenceFragment
 	}
 
 	@Override
-	public boolean onPreferenceTreeClick(final PreferenceScreen screen, final Preference pref)
+	public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference pref)
+	{
+		// If the user is on the preference screen to set Gamecube input bindings.
+		if (screen.getTitle().equals(getString(R.string.gamecube_bindings)))
 		{
 			// Begin the creation of the input alert.
-		final MotionAlertDialog dialog = new MotionAlertDialog(m_activity);
+			final MotionAlertDialog dialog = new MotionAlertDialog(getActivity(), pref);
 
-		// Set the key listener
-		dialog.setOnKeyListener(new AlertDialog.OnKeyListener()
+			// Set the cancel button.
+			dialog.setButton(AlertDialog.BUTTON_NEGATIVE, getString(R.string.cancel), new AlertDialog.OnClickListener()
 			{
-			public boolean onKey(DialogInterface dlg, int keyCode, KeyEvent event)
+				@Override
+				public void onClick(DialogInterface dialog, int which)
+				{
+					// Do nothing. Just makes the cancel button show up.
+				}
+			});
+
+			// Set the title and description message.
+			dialog.setTitle(R.string.input_binding);
+			dialog.setMessage(String.format(getString(R.string.input_binding_descrip), pref.getTitle()));
+
+			// Don't allow the dialog to close when a user taps
+			// outside of it. They must press cancel or provide an input.
+			dialog.setCanceledOnTouchOutside(false);
+
+			// Everything is set, show the dialog.
+			dialog.show();
+		}
+
+		return true;
+	}
+
+	/**
+	 * {@link AlertDialog} derivative that listens for
+	 * motion events from controllers and joysticks.
+	 */
+	private static final class MotionAlertDialog extends AlertDialog
+	{
+		// The selected input preference
+		private final Preference inputPref;
+
+		private boolean firstEvent = true;
+		private final ArrayList<Float> m_values = new ArrayList<Float>();
+
+		/**
+		 * Constructor
+		 * 
+		 * @param ctx context to use this dialog in.
+		 */
+		public MotionAlertDialog(Context ctx, Preference inputPref)
+		{
+			super(ctx);
+
+			this.inputPref = inputPref;
+		}
+
+		@Override
+		public boolean onKeyDown(int keyCode, KeyEvent event)
 		{
 			Log.d("InputConfigFragment", "Received key event: " + event.getAction());
 			switch (event.getAction())
@@ -109,9 +154,9 @@ public final class InputConfigFragment extends PreferenceFragment
 				case KeyEvent.ACTION_UP:
 					InputDevice input = event.getDevice();
 					String bindStr = "Device '" + getInputDesc(input) + "'-Button " + event.getKeyCode();
-						NativeLibrary.SetConfig("Dolphin.ini", "Android", pref.getKey(), bindStr);
-						pref.setSummary(bindStr);
-						dialog.dismiss();
+					NativeLibrary.SetConfig("Dolphin.ini", "Android", inputPref.getKey(), bindStr);
+					inputPref.setSummary(bindStr);
+					dismiss();
 					return true;
 
 				default:
@@ -120,14 +165,12 @@ public final class InputConfigFragment extends PreferenceFragment
 
 			return false;
 		}
-		});
 		
-		// Set the motion event listener.
-		dialog.setOnMotionEventListener(new MotionAlertDialog.OnMotionEventListener()
+
+		// Method that will be within dispatchGeneticMotionEvent that listens for joystick/controller movements.
+		private boolean onMotionEvent(MotionEvent event)
 		{
-			public boolean onMotion(MotionEvent event)
-			{
-				if (event == null || (event.getSource() & InputDevice.SOURCE_CLASS_JOYSTICK) == 0)
+			if ((event.getSource() & InputDevice.SOURCE_CLASS_JOYSTICK) == 0)
 				return false;
 
 			Log.d("InputConfigFragment", "Received motion event: " + event.getAction());
@@ -154,100 +197,22 @@ public final class InputConfigFragment extends PreferenceFragment
 					if (m_values.get(a) > (event.getAxisValue(range.getAxis()) + 0.5f))
 					{
 						String bindStr = "Device '" + InputConfigFragment.getInputDesc(input) + "'-Axis " + range.getAxis() + "-";
-							NativeLibrary.SetConfig("Dolphin.ini", "Android", pref.getKey(), bindStr);
-							pref.setSummary(bindStr);
-							dialog.dismiss();
+						NativeLibrary.SetConfig("Dolphin.ini", "Android", inputPref.getKey(), bindStr);
+						inputPref.setSummary(bindStr);
+						dismiss();
 					}
 					else if (m_values.get(a) < (event.getAxisValue(range.getAxis()) - 0.5f))
 					{
 						String bindStr = "Device '" + InputConfigFragment.getInputDesc(input) + "'-Axis " + range.getAxis() + "+";
-							NativeLibrary.SetConfig("Dolphin.ini", "Android", pref.getKey(), bindStr);
-							pref.setSummary(bindStr);
-							dialog.dismiss();
+						NativeLibrary.SetConfig("Dolphin.ini", "Android", inputPref.getKey(), bindStr);
+						inputPref.setSummary(bindStr);
+						dismiss();
 					}
 				}
 			}
 
 			return true;
 		}
-		});
-
-		// Set the cancel button.
-		dialog.setButton(AlertDialog.BUTTON_NEGATIVE, getString(R.string.cancel), new AlertDialog.OnClickListener()
-		{
-			public void onClick(DialogInterface dialog, int which)
-			{
-				// Do nothing. This just makes the cancel button appear.
-			}
-		});
-
-		// Set the title and description message.
-		dialog.setTitle(R.string.input_binding);
-		dialog.setMessage(String.format(getString(R.string.input_binding_descrip), pref.getTitle()));
-
-		// Don't allow the dialog to close when a user taps
-		// outside of it. They must press cancel or provide an input.
-		dialog.setCanceledOnTouchOutside(false);
-
-		// Everything is set, show the dialog.
-		dialog.show();
-		return true;
-	}
-
-	@Override
-	public void onAttach(Activity activity)
-	{
-		super.onAttach(activity);
-
-		// Cache the activity instance.
-		m_activity = activity;
-	}
-
-	/**
-	 * {@link AlertDialog} class derivative that allows the motion listener
-	 * to be set anonymously, so the creation of an explicit class for
-	 * providing functionality is not necessary.
-	 */
-	private static final class MotionAlertDialog extends AlertDialog
-	{
-		private OnMotionEventListener motionListener;
-
-		/**
-		 * Constructor
-		 * 
-		 * @param ctx context to use this dialog in.
-		 */
-		public MotionAlertDialog(Context ctx)
-		{
-			super(ctx);
-		}
-
-		/**
-		 * Interface which defines a callback method for general
-		 * motion events. This allows motion event code to be set
-		 * in the event anonymous classes of this dialog are used.
-		 */
-		public interface OnMotionEventListener
-		{
-			/**
-			 * Denotes the behavior that should happen when a motion event occurs.
-			 * 
-			 * @param event Reference to the {@link MotionEvent} that occurred.
-			 * 
-			 * @return true if the {@link MotionEvent} is consumed in this call; false otherwise.
-			 */
-			boolean onMotion(MotionEvent event);
-		}
-
-		/**
-		 * Sets the motion listener.
-		 * 
-		 * @param listener The motion listener to set.
-		 */
-		public void setOnMotionEventListener(OnMotionEventListener listener)
-		{
-			this.motionListener = listener;
-		}
 
 		@Override
 		public boolean dispatchKeyEvent(KeyEvent event)
@@ -261,7 +226,7 @@ public final class InputConfigFragment extends PreferenceFragment
 		@Override
 		public boolean dispatchGenericMotionEvent(MotionEvent event)
 		{
-			if (motionListener.onMotion(event))
+			if (onMotionEvent(event))
 				return true;
 
 			return super.dispatchGenericMotionEvent(event);