handling von messages, refactoring

1 files changed, 85 insertions, 35 deletions

diff --git a/vdrmanager/src/de/bjusystems/vdrmanager/gui/BaseActivity.java b/vdrmanager/src/de/bjusystems/vdrmanager/gui/BaseActivity.java
index 629f2a6..5e2e49c 100644
--- a/vdrmanager/src/de/bjusystems/vdrmanager/gui/BaseActivity.java
+++ b/vdrmanager/src/de/bjusystems/vdrmanager/gui/BaseActivity.java
@@ -1,48 +1,70 @@
 package de.bjusystems.vdrmanager.gui;
 
-import de.bjusystems.vdrmanager.R;
-import de.bjusystems.vdrmanager.app.VdrManagerApp;
-import de.bjusystems.vdrmanager.data.Channel;
 import android.app.Activity;
+import android.app.AlertDialog;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
+import android.widget.ListView;
+import android.widget.Toast;
+import android.widget.ViewFlipper;
+import de.bjusystems.vdrmanager.R;
+import de.bjusystems.vdrmanager.app.VdrManagerApp;
+import de.bjusystems.vdrmanager.data.Channel;
+import de.bjusystems.vdrmanager.utils.svdrp.SvdrpException;
 
-public abstract class BaseActivity extends Activity implements OnClickListener{
-
+public abstract class BaseActivity<T extends ListView> extends Activity
+		implements OnClickListener {
 
 	public static final int MENU_GROUP_REFRESH = 99;
-	
+
 	public static final int MENU_REFRESH = 99;
+
+	protected T listView;
 	
+	protected ViewFlipper flipper;
+
+	protected SvdrpProgressDialog progress;
+
 	abstract protected int getMainLayout();
-	
-	protected void switchNoConnection(){
+
+	public void svdrpException(final SvdrpException exception) {
+		// Log.w(TAG, exception);
+		alert(getString(R.string.vdr_error_text, exception.getMessage()));
+	}
+
+	protected void switchNoConnection() {
 		View view = findViewById(R.id.main_content);
-		if(view != null){
+		if (view != null) {
 			view.setVisibility(View.GONE);
 		}
-		findViewById(R.id.no_connection_layout).setVisibility(View.VISIBLE);
-		Button b  = (Button) findViewById(R.id.retry_button);
+		view = findViewById(R.id.no_connection_layout);
+		if (view != null) {
+			view.setVisibility(View.VISIBLE);
+		}
+		Button b = (Button) findViewById(R.id.retry_button);
 		b.setOnClickListener(this);
 	}
 
 	public void onClick(View v) {
-		if(v.getId() == R.id.retry_button){
-			findViewById(R.id.no_connection_layout).setVisibility(View.GONE);
-			View view = findViewById(R.id.main_content);
-			if(view != null){
+		if (v.getId() == R.id.retry_button) {
+			View view = findViewById(R.id.no_connection_layout);
+			if (view != null) {
+				view.setVisibility(View.GONE);
+			}
+			view = findViewById(R.id.main_content);
+			if (view != null) {
 				view.setVisibility(View.VISIBLE);
 			}
 			retry();
 		}
 	}
-	
+
 	protected void updateWindowTitle(int topic, int subtopic) {
 		String title;
-		title = getString(topic); 
+		title = getString(topic);
 		if (subtopic != -1) {
 			title += " > " + getString(subtopic);
 		}
@@ -57,7 +79,6 @@ public abstract class BaseActivity extends Activity implements OnClickListener{
 		setTitle(title);
 	}
 
-
 	@Override
 	public boolean onCreateOptionsMenu(final Menu menu) {
 		MenuItem item;
@@ -66,40 +87,69 @@ public abstract class BaseActivity extends Activity implements OnClickListener{
 		item.setAlphabeticShortcut('r');
 		return true;
 	}
-	
-	abstract protected void refresh(); 
-	
-	abstract protected void retry(); 
-	
+
+	abstract protected void refresh();
+
+	abstract protected void retry();
+
 	@Override
 	public boolean onOptionsItemSelected(MenuItem item) {
 		switch (item.getItemId()) {
 		case MENU_REFRESH:
+			backupViewSelection();
 			refresh();
 			return true;
-
 		default:
 			return false;
 		}
 	}
 
-
 	protected void setAsCurrent(Channel channel) {
 		getApp().setCurrentChannel(channel);
 	}
 
-
-	protected VdrManagerApp getApp(){
+	protected VdrManagerApp getApp() {
 		final VdrManagerApp app = (VdrManagerApp) getApplication();
 		return app;
 	}
-	
-	//protected Channel getCurrentChannel(){
-		//final Channel channel = ((VdrManagerApp) getApplication())
-		//.getCurrentChannel();
-		//return channel;
-//	}
 
-	
-	
+	// protected Channel getCurrentChannel(){
+	// final Channel channel = ((VdrManagerApp) getApplication())
+	// .getCurrentChannel();
+	// return channel;
+	// }
+
+	protected void say(int res) {
+		Toast.makeText(this, res, Toast.LENGTH_SHORT).show();
+	}
+
+	protected void say(String msg) {
+		Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
+	}
+
+	protected void alert(String msg) {
+		new AlertDialog.Builder(this)//
+				.setMessage(msg)//
+				.setPositiveButton(android.R.string.ok, null)//
+				.create()//
+				.show();//
+	}
+
+	protected void alert(int resId) {
+		alert(getString(resId));
+	}
+
+	protected void restoreViewSelection() {
+		listView.setSelectionFromTop(index, top);
+	}
+
+	protected void backupViewSelection() {
+		index = listView.getFirstVisiblePosition();
+		View v = listView.getChildAt(0);
+		top = (v == null) ? 0 : v.getTop();
+	}
+
+	int index;
+	int top;
+
 }