Add configuration for default emulator image (GS, AR, etc)

This is a future-proof addition to support possible integration of disk
swapping with a cheat engine such as GameShark or Action Replay, which
require loading a disk during games.

shell/android/res/layout/configure_fragment.xml

@@ -228,6 +228,34 @@
         </TableRow
         -->
 
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical" >
+
+            <TextView
+                android:id="@+id/cheatdisk_text"
+                android:layout_width="wrap_content"
+                android:layout_height="0dip"
+                android:layout_weight="1"
+                android:text="@string/default_disk" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical" >
+
+                <EditText
+                    android:id="@+id/cheat_disk"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:ems="10"
+                    android:inputType="textPersonName" >
+                </EditText>
+            </LinearLayout>
+        </LinearLayout>
+
         <TableRow android:gravity="center_vertical" >
 
             <Button

shell/android/res/values/strings.xml

@@ -25,6 +25,7 @@
     <string name="select_stretch">Widescreen Mode</string>
     <string name="set_frameskip">Frameskip Value</string>
     <string name="select_render">PVR Rendering (does nothing for now)</string>
+    <string name="default_disk">Set Default Disk</string>
 
     <string name="games_listing">Available Dreamcast Games</string>
 

shell/android/src/com/reicast/emulator/ConfigureFragment.java

@@ -22,12 +22,16 @@ import android.os.Bundle;
 import android.os.Environment;
 import android.preference.PreferenceManager;
 import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.CompoundButton;
+import android.widget.EditText;
+import android.widget.Toast;
 import android.widget.CompoundButton.OnCheckedChangeListener;
 import android.widget.SeekBar;
 import android.widget.SeekBar.OnSeekBarChangeListener;
@@ -47,6 +51,7 @@ public class ConfigureFragment extends Fragment {
 	boolean widescreen = false;
 	int frameskip = 0;
 	boolean pvrrender = false;
+	String cheatdisk = "null";
 
 	private SharedPreferences mPrefs;
 	private File sdcard = Environment.getExternalStorageDirectory();
@@ -137,7 +142,9 @@ public class ConfigureFragment extends Fragment {
 						pvrrender = Boolean.valueOf(currentLine.replace(
 								"pvr.rend=", ""));
 					}*/
-					
+					if (StringUtils.containsIgnoreCase(currentLine, "image")) {
+						cheatdisk = currentLine.replace("image=", "");
+					}
 				}
 				scanner.close();
 			}
@@ -323,6 +330,31 @@ public class ConfigureFragment extends Fragment {
 
 		/*OnCheckedChangeListener pvr_rendering = new OnCheckedChangeListener() {
 		
+		final EditText cheatEdit = (EditText) getView().findViewById(
+				R.id.cheat_disk);
+		cheatEdit.setText(cheatdisk);
+
+		cheatEdit.addTextChangedListener(new TextWatcher() {
+			public void afterTextChanged(Editable s) {
+				if (cheatEdit.getText() != null) {
+					cheatdisk = cheatEdit.getText().toString();
+					mPrefs.edit().putString("cheat_disk", cheatdisk)
+							.commit();
+					if (!executeAppendConfig("image", cheatdisk)) {
+						executeWriteConfig();
+					}
+				}
+			}
+
+			public void beforeTextChanged(CharSequence s, int start, int count,
+					int after) {
+			}
+
+			public void onTextChanged(CharSequence s, int start, int before,
+					int count) {
+			}
+		});
+
 			public void onCheckedChanged(CompoundButton buttonView,
 					boolean isChecked) {
 				mPrefs.edit().putBoolean("pvr_render", isChecked).commit();
@@ -524,8 +556,9 @@ public class ConfigureFragment extends Fragment {
 					+ String.valueOf(widescreen ? 1 : 0) + "\n");
 			rebuildFile.append("pvr.Subdivide=0" + "\n");
 			rebuildFile.append("ta.skip=" + String.valueOf(frameskip) + "\n");
-			rebuildFile.append("pvr.rend=" + String.valueOf(pvrrender ? 1 : 0) + "\n");
-			rebuildFile.append("image=null" + "\n");
+			rebuildFile.append("pvr.rend=" + String.valueOf(pvrrender ? 1 : 0)
+					+ "\n");
+			rebuildFile.append("image=" + cheatdisk + "\n");
 			FileOutputStream fos = new FileOutputStream(config);
 			fos.write(rebuildFile.toString().getBytes());
 			fos.close();