popup windows refactoring

src/org/geometerplus/android/fbreader/ControlButtonPanel.java

@@ -1,150 +0,0 @@
-/*
- * Copyright (C) 2010-2011 Geometer Plus <contact@geometerplus.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- */
-
-package org.geometerplus.android.fbreader;
-
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.RelativeLayout;
-
-import org.geometerplus.zlibrary.core.application.ZLApplication;
-
-import org.geometerplus.zlibrary.text.view.ZLTextWordCursor;
-
-import org.geometerplus.fbreader.fbreader.FBReaderApp;
-
-abstract class ControlButtonPanel implements ZLApplication.ButtonPanel {
-	public final FBReaderApp Reader;
-	public ZLTextWordCursor StartPosition;
-
-	private boolean myVisible;
-
-	protected ControlPanel myControlPanel;
-
-	ControlButtonPanel(FBReaderApp fbReader) {
-		Reader = fbReader;
-		fbReader.registerButtonPanel(this);
-	}
-
-	public final void hide() {
-		hide(false);
-	}
-
-	public void updateStates() {
-	}
-
-	public final boolean hasControlPanel() {
-		return myControlPanel != null;
-	}
-
-	private final void removeControlPanel() {
-		if (myControlPanel != null) {
-			ViewGroup root = (ViewGroup)myControlPanel.getParent();
-			myControlPanel.hide(false);
-			root.removeView(myControlPanel);
-			myControlPanel = null;
-		}
-	}
-
-	public static void removeControlPanels(ZLApplication application) {
-		for (ZLApplication.ButtonPanel panel : application.buttonPanels()) {
-			((ControlButtonPanel)panel).removeControlPanel();
-		}
-	}
-
-	public static void restoreVisibilities(ZLApplication application) {
-		for (ZLApplication.ButtonPanel panel : application.buttonPanels()) {
-			final ControlButtonPanel p = (ControlButtonPanel)panel;
-			p.setVisibility(p.myVisible);
-		}
-	}
-
-	public static void saveVisibilities(ZLApplication application) {
-		for (ZLApplication.ButtonPanel panel : application.buttonPanels()) {
-			final ControlButtonPanel p = (ControlButtonPanel)panel;
-			p.myVisible = p.getVisibility();
-		}
-	}
-
-	public static void hideAllPendingNotify(ZLApplication application) {
-		for (ZLApplication.ButtonPanel panel : application.buttonPanels()) {
-			final ControlButtonPanel p = (ControlButtonPanel)panel;
-			if (p.myControlPanel != null && p.getVisibility()) {
-				p.myControlPanel.hide(false);
-			}
-		}
-	}
-
-	public final boolean getVisibility() {
-		if (myControlPanel != null) {
-			return myControlPanel.getVisibility() == View.VISIBLE;
-		}
-		return false;
-	}
-
-	private void setVisibility(boolean visible) {
-		if (visible) {
-			show(false);
-		} else {
-			hide(false);
-		}
-	}
-
-	private void hideOthers() {
-		for (ZLApplication.ButtonPanel panel : Reader.buttonPanels()) {
-			if (panel != this) {
-				((ControlButtonPanel)panel).hide(false);
-			}
-		}
-	}
-
-	public final void show(boolean animate) {
-		if (myControlPanel != null && !getVisibility()) {
-			hideOthers();
-			onShow();
-			myControlPanel.show(animate);
-		}
-	}
-
-	public final void initPosition() {
-		if (StartPosition == null) {
-			StartPosition = new ZLTextWordCursor(Reader.getTextView().getStartCursor());
-		}
-	}
-
-	public final void storePosition() {
-		if (StartPosition != null &&
-			!StartPosition.equals(Reader.getTextView().getStartCursor())) {
-			Reader.addInvisibleBookmark(StartPosition);
-		}
-	}
-
-	public final void hide(boolean animate) {
-		if (myControlPanel != null && getVisibility()) {
-			onHide();
-			myControlPanel.hide(animate);
-		}
-	}
-
-	public abstract void createControlPanel(FBReader activity, RelativeLayout root, ControlPanel.Location location);
-
-	// callback methods
-	public void onShow() {}
-	public void onHide() {}
-}

src/org/geometerplus/android/fbreader/FBReader.java

@@ -53,9 +53,6 @@ public final class FBReader extends ZLAndroidActivity {
 
 	private int myFullScreenFlag;
 
-	private static TextSearchButtonPanel ourTextSearchPanel;
-	private static NavigationButtonPanel ourNavigatePanel;
-
 	@Override
 	protected ZLFile fileFromIntent(Intent intent) {
 		String filePath = intent.getStringExtra(BOOK_PATH_KEY);
@@ -79,11 +76,11 @@ public final class FBReader extends ZLAndroidActivity {
 		);
 
 		final FBReaderApp fbReader = (FBReaderApp)FBReaderApp.Instance();
-		if (ourTextSearchPanel == null) {
-			ourTextSearchPanel = new TextSearchButtonPanel(fbReader);
+		if (fbReader.getPopupById(TextSearchPopup.ID) == null) {
+			new TextSearchPopup(fbReader);
 		}
-		if (ourNavigatePanel == null) {
-			ourNavigatePanel = new NavigationButtonPanel(fbReader);
+		if (fbReader.getPopupById(NavigationPopup.ID) == null) {
+			new NavigationPopup(fbReader);
 		}
 
 		fbReader.addAction(ActionCode.SHOW_LIBRARY, new ShowLibraryAction(this, fbReader));
@@ -135,20 +132,21 @@ public final class FBReader extends ZLAndroidActivity {
 			final String pattern = intent.getStringExtra(SearchManager.QUERY);
 			final Runnable runnable = new Runnable() {
 				public void run() {
-					ourTextSearchPanel.initPosition();
 					final FBReaderApp fbReader = (FBReaderApp)FBReaderApp.Instance();
+					final TextSearchPopup popup = (TextSearchPopup)fbReader.getPopupById(TextSearchPopup.ID);
+					popup.initPosition();
 					fbReader.TextSearchPatternOption.setValue(pattern);
 					if (fbReader.getTextView().search(pattern, true, false, false, false) != 0) {
 						runOnUiThread(new Runnable() {
 							public void run() {
-								ourTextSearchPanel.show(true);
+								fbReader.showPopup(popup.getId());
 							}
 						});
 					} else {
 						runOnUiThread(new Runnable() {
 							public void run() {
 								UIUtil.showErrorMessage(FBReader.this, "textNotFound");
-								ourTextSearchPanel.StartPosition = null;
+								popup.StartPosition = null;
 							}
 						});
 					}
@@ -173,13 +171,10 @@ public final class FBReader extends ZLAndroidActivity {
 			startActivity(new Intent(this, this.getClass()));
 		}
 
+		final FBReaderApp fbReader = (FBReaderApp)FBReaderApp.Instance();
 		final RelativeLayout root = (RelativeLayout)findViewById(R.id.root_view);
-		if (!ourTextSearchPanel.hasControlPanel()) {
-			ourTextSearchPanel.createControlPanel(this, root, ControlPanel.Location.Bottom);
-		}
-		if (!ourNavigatePanel.hasControlPanel()) {
-			ourNavigatePanel.createControlPanel(this, root, ControlPanel.Location.Bottom);
-		}
+		((PopupPanel)fbReader.getPopupById(TextSearchPopup.ID)).createControlPanel(this, root, PopupWindow.Location.Bottom);
+		((PopupPanel)fbReader.getPopupById(NavigationPopup.ID)).createControlPanel(this, root, PopupWindow.Location.Bottom);
 	}
 
 	@Override
@@ -189,18 +184,12 @@ public final class FBReader extends ZLAndroidActivity {
 			sendBroadcast(new Intent(getApplicationContext(), KillerCallback.class));
 		} catch (Throwable t) {
 		}
-		ControlButtonPanel.restoreVisibilities(FBReaderApp.Instance());
-	}
-
-	@Override
-	public void onPause() {
-		ControlButtonPanel.saveVisibilities(FBReaderApp.Instance());
-		super.onPause();
+		PopupPanel.restoreVisibilities(FBReaderApp.Instance());
 	}
 
 	@Override
 	public void onStop() {
-		ControlButtonPanel.removeControlPanels(FBReaderApp.Instance());
+		PopupPanel.removeAllWindows(FBReaderApp.Instance());
 		super.onStop();
 	}
 
@@ -215,12 +204,14 @@ public final class FBReader extends ZLAndroidActivity {
 	@Override
 	public boolean onSearchRequested() {
 		final FBReaderApp fbreader = (FBReaderApp)FBReaderApp.Instance();
-		ControlButtonPanel.saveVisibilities(fbreader);
-		ControlButtonPanel.hideAllPendingNotify(fbreader);
+		final FBReaderApp.PopupPanel popup = fbreader.getActivePopup();
+		fbreader.hideActivePopup();
 		final SearchManager manager = (SearchManager)getSystemService(SEARCH_SERVICE);
 		manager.setOnCancelListener(new SearchManager.OnCancelListener() {
 			public void onCancel() {
-				ControlButtonPanel.restoreVisibilities(fbreader);
+				if (popup != null) {
+					fbreader.showPopup(popup.getId());
+				}
 				manager.setOnCancelListener(null);
 			}
 		});
@@ -263,7 +254,7 @@ public final class FBReader extends ZLAndroidActivity {
 	}
 
 	public void navigate() {
-		ourNavigatePanel.runNavigation();
+		((NavigationPopup)FBReaderApp.Instance().getPopupById(NavigationPopup.ID)).runNavigation();
 	}
 
 	private void addMenuItem(Menu menu, String actionId, int iconId) {

src/org/geometerplus/android/fbreader/NavigationPopup.java

@@ -34,55 +34,66 @@ import org.geometerplus.zlibrary.ui.android.R;
 
 import org.geometerplus.fbreader.fbreader.FBReaderApp;
 
-final class NavigationButtonPanel extends ControlButtonPanel {
+final class NavigationPopup extends PopupPanel {
+	final static String ID = "NavigationPopup";
+
 	private volatile boolean myIsInProgress;
 
-	NavigationButtonPanel(FBReaderApp fbReader) {
+	NavigationPopup(FBReaderApp fbReader) {
 		super(fbReader);
 	}
 
 	public void runNavigation() {
-		if (!getVisibility()) {
+		if (myWindow.getVisibility() == View.GONE) {
 			myIsInProgress = false;
 			initPosition();
-			show(true);
+			Application.showPopup(ID);
 		}
 	}
 
 	@Override
-	public void onShow() {
-		if (myControlPanel != null) {
-			setupNavigation(myControlPanel);
+	public String getId() {
+		return ID;
+	}
+
+	@Override
+	protected void show_() {
+		super.show_();
+		if (myWindow != null) {
+			setupNavigation(myWindow);
 		}
 	}
 
 	@Override
-	public void updateStates() {
-		super.updateStates();
-		if (!myIsInProgress && myControlPanel != null) {
-			setupNavigation(myControlPanel);
+	protected void update() {
+		if (!myIsInProgress && myWindow != null) {
+			setupNavigation(myWindow);
 		}
 	}
 
 	@Override
-	public void createControlPanel(FBReader activity, RelativeLayout root, ControlPanel.Location location) {
-		myControlPanel = new ControlPanel(activity, root, location, true);
+	public void createControlPanel(FBReader activity, RelativeLayout root, PopupWindow.Location location) {
+		if (myWindow != null) {
+			return;
+		}
 
-		final View layout = activity.getLayoutInflater().inflate(R.layout.navigate, myControlPanel, false);
+		myWindow = new PopupWindow(activity, root, location, true);
+
+		final View layout = activity.getLayoutInflater().inflate(R.layout.navigate, myWindow, false);
 
 		final SeekBar slider = (SeekBar)layout.findViewById(R.id.book_position_slider);
 		final TextView text = (TextView)layout.findViewById(R.id.book_position_text);
 
 		slider.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
 			private void gotoPage(int page) {
-				final ZLTextView view = Reader.getTextView();
+				final ZLTextView view = getReader().getTextView();
 				if (page == 1) {
 					view.gotoHome();
 				} else {
 					view.gotoPage(page);
 				}
-				Reader.getViewWidget().reset();
-				Reader.getViewWidget().repaint();
+				getReader().getViewWidget().reset();
+				getReader().getViewWidget().repaint();
 			}
 
 			public void onStopTrackingTouch(SeekBar seekBar) {
@@ -109,12 +120,12 @@ final class NavigationButtonPanel extends ControlButtonPanel {
 			public void onClick(View v) {
 				final ZLTextWordCursor position = StartPosition;
 				if (v == btnCancel && position != null) {
-					Reader.getTextView().gotoPosition(position);
+					getReader().getTextView().gotoPosition(position);
 				} else if (v == btnOk) {
 					storePosition();
 				}
 				StartPosition = null;
-				hide(true);
+				Application.hideActivePopup();
 			}
 		};
 		btnOk.setOnClickListener(listener);
@@ -123,14 +134,14 @@ final class NavigationButtonPanel extends ControlButtonPanel {
 		btnOk.setText(buttonResource.getResource("ok").getValue());
 		btnCancel.setText(buttonResource.getResource("cancel").getValue());
 
-		myControlPanel.addView(layout);
+		myWindow.addView(layout);
 	}
 
-	private void setupNavigation(ControlPanel panel) {
+	private void setupNavigation(PopupWindow panel) {
 		final SeekBar slider = (SeekBar)panel.findViewById(R.id.book_position_slider);
 		final TextView text = (TextView)panel.findViewById(R.id.book_position_text);
 
-		final ZLTextView textView = Reader.getTextView();
+		final ZLTextView textView = getReader().getTextView();
 		final int page = textView.computeCurrentPage();
 		final int pagesNumber = textView.computePageNumber();
 

src/org/geometerplus/android/fbreader/PopupPanel.java

@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2010-2011 Geometer Plus <contact@geometerplus.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+package org.geometerplus.android.fbreader;
+
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.RelativeLayout;
+
+import org.geometerplus.zlibrary.core.application.ZLApplication;
+
+import org.geometerplus.zlibrary.text.view.ZLTextWordCursor;
+
+import org.geometerplus.fbreader.fbreader.FBReaderApp;
+
+abstract class PopupPanel extends ZLApplication.PopupPanel {
+	public ZLTextWordCursor StartPosition;
+
+	protected PopupWindow myWindow;
+
+	PopupPanel(FBReaderApp fbReader) {
+		super(fbReader);
+	}
+
+	protected final FBReaderApp getReader() {
+		return (FBReaderApp)Application;
+	}
+
+	@Override
+	protected void show_() {
+		if (myWindow != null) {
+			myWindow.show();
+		}
+	}
+
+	@Override
+	protected void hide_() {
+		if (myWindow != null) {
+			myWindow.hide();
+		}
+	}
+
+	private final void removeWindow() {
+		if (myWindow != null) {
+			ViewGroup root = (ViewGroup)myWindow.getParent();
+			myWindow.hide();
+			root.removeView(myWindow);
+			myWindow = null;
+		}
+	}
+
+	public static void removeAllWindows(ZLApplication application) {
+		for (ZLApplication.PopupPanel popup : application.popupPanels()) {
+			((PopupPanel)popup).removeWindow();
+		}
+	}
+
+	public static void restoreVisibilities(ZLApplication application) {
+		final PopupPanel popup = (PopupPanel)application.getActivePopup();
+		if (popup != null) {
+			popup.show_();
+		}
+	}
+
+	public final void initPosition() {
+		if (StartPosition == null) {
+			StartPosition = new ZLTextWordCursor(getReader().getTextView().getStartCursor());
+		}
+	}
+
+	public final void storePosition() {
+		if (StartPosition != null &&
+			!StartPosition.equals(getReader().getTextView().getStartCursor())) {
+			getReader().addInvisibleBookmark(StartPosition);
+		}
+	}
+
+	public abstract void createControlPanel(FBReader activity, RelativeLayout root, PopupWindow.Location location);
+}

src/org/geometerplus/android/fbreader/PopupWindow.java

@@ -19,6 +19,7 @@
 
 package org.geometerplus.android.fbreader;
 
+import android.app.Activity;
 import android.os.Handler;
 import android.os.Message;
 import android.content.Context;
@@ -28,19 +29,22 @@ import android.widget.*;
 
 import org.geometerplus.zlibrary.ui.android.R;
 
-public class ControlPanel extends LinearLayout {
+public class PopupWindow extends LinearLayout {
 	public static enum Location {
 		Bottom,
 		Floating
 	}
 
-	public ControlPanel(Context context, RelativeLayout root, Location location, boolean fillWidth) {
-		super(context);
+	private final Activity myActivity;
+
+	public PopupWindow(Activity activity, RelativeLayout root, Location location, boolean fillWidth) {
+		super(activity);
+		myActivity = activity;
 
 		setFocusable(false);
 		
 		final LayoutInflater inflater =
-			(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+			(LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 		inflater.inflate(
 			location == Location.Bottom
 				? R.layout.control_panel_bottom : R.layout.control_panel_floating,
@@ -64,45 +68,20 @@ public class ControlPanel extends LinearLayout {
 		return true;
 	}
 
-	private interface VisibilityAction {
-		int SHOW_ANIMATED = 0;
-		int SHOW_INSTANTLY = 1;
-		int HIDE_ANIMATED = 2;
-		int HIDE_INSTANTLY = 3;
-	}
-	
-	private Handler myVisibilityHandler = new Handler() {
-		public void handleMessage(Message message) {
-			switch (message.what) {
-				case VisibilityAction.SHOW_ANIMATED:
-					fade(View.VISIBLE, 0.0f, 1.0f);
-					break;
-				case VisibilityAction.SHOW_INSTANTLY:
+	public void show() {
+		myActivity.runOnUiThread(new Runnable() {
+			public void run() {
 				setVisibility(View.VISIBLE);
-					break;
-				case VisibilityAction.HIDE_ANIMATED:
-					fade(View.GONE, 1.0f, 0.0f);
-					break;
-				case VisibilityAction.HIDE_INSTANTLY:
+			}
+		});
+	}
+
+	public void hide() {
+		myActivity.runOnUiThread(new Runnable() {
+			public void run() {
 				setVisibility(View.GONE);
-					break;
 			}
-		}
-	};
-
-	public void show(boolean animate) {
-		myVisibilityHandler.sendEmptyMessage(animate ? VisibilityAction.SHOW_ANIMATED : VisibilityAction.SHOW_INSTANTLY);
-	}
-
-	public void hide(boolean animate) {
-		myVisibilityHandler.sendEmptyMessage(animate ? VisibilityAction.HIDE_ANIMATED : VisibilityAction.HIDE_INSTANTLY);
-	}
-	
-	private void fade(int visibility, float startAlpha, float endAlpha) {
-		final AlphaAnimation animation = new AlphaAnimation(startAlpha, endAlpha);
-		animation.setDuration(500);
-		startAnimation(animation);
-		setVisibility(visibility);
+		});
 	}
 	
 	public void addView(View view) {

src/org/geometerplus/android/fbreader/TextSearchPopup.java

@@ -42,21 +42,33 @@ class ActionButton extends ZoomButton {
 	}
 }
 
-final class TextSearchButtonPanel extends ControlButtonPanel implements View.OnClickListener {
+final class TextSearchPopup extends PopupPanel implements View.OnClickListener {
+	final static String ID = "TextSearchPopup";
+
 	private final ArrayList<ActionButton> myButtons = new ArrayList<ActionButton>();
 
-	TextSearchButtonPanel(FBReaderApp fbReader) {
+	TextSearchPopup(FBReaderApp fbReader) {
 		super(fbReader);
 	}
 
 	@Override
-	public void onHide() {
-		Reader.getTextView().clearFindResults();
+	public String getId() {
+		return ID;
 	}
 
 	@Override
-	public void createControlPanel(FBReader activity, RelativeLayout root, ControlPanel.Location location) {
-		myControlPanel = new ControlPanel(activity, root, location, false);
+	protected void hide_() {
+		getReader().getTextView().clearFindResults();
+		super.hide_();
+	}
+
+	@Override
+	public void createControlPanel(FBReader activity, RelativeLayout root, PopupWindow.Location location) {
+		if (myWindow != null) {
+			return;
+		}
+
+		myWindow = new PopupWindow(activity, root, location, false);
 
 		addButton(ActionCode.FIND_PREVIOUS, false, R.drawable.text_search_previous);
 		addButton(ActionCode.CLEAR_FIND_RESULTS, true, R.drawable.text_search_close);
@@ -64,27 +76,27 @@ final class TextSearchButtonPanel extends ControlButtonPanel implements View.OnC
 	}
 
 	private void addButton(String actionId, boolean isCloseButton, int imageId) {
-		final ActionButton button = new ActionButton(myControlPanel.getContext(), actionId, isCloseButton);
+		final ActionButton button = new ActionButton(myWindow.getContext(), actionId, isCloseButton);
 		button.setImageResource(imageId);
-		myControlPanel.addView(button);
+		myWindow.addView(button);
 		button.setOnClickListener(this);
 		myButtons.add(button);
 	}
 
 	@Override
-	public void updateStates() {
+	protected void update() {
 		for (ActionButton button : myButtons) {
-			button.setEnabled(Reader.isActionEnabled(button.ActionId));
+			button.setEnabled(Application.isActionEnabled(button.ActionId));
 		}
 	}
 
 	public void onClick(View view) {
 		final ActionButton button = (ActionButton)view;
-		Reader.doAction(button.ActionId);
-		if (button.IsCloseButton && myControlPanel != null) {
+		Application.doAction(button.ActionId);
+		if (button.IsCloseButton) {
 			storePosition();
 			StartPosition = null;
-			myControlPanel.hide(true);
+			Application.hideActivePopup();
 		}
 	}
 }

src/org/geometerplus/zlibrary/core/application/ZLApplication.java

@@ -75,14 +75,27 @@ public abstract class ZLApplication {
 		if (myWindow != null) {
 			myWindow.refreshMenu();
 		}
-		for (ButtonPanel panel : myPanels) {
-			panel.updateStates();
+		for (PopupPanel popup : popupPanels()) {
+			popup.update();
 		}
 	}
 
 	public final void onViewChanged() {
-		for (ButtonPanel panel : myPanels) {
-			panel.hide();
+		hideActivePopup();
+	}
+
+	public final void hideActivePopup() {
+		if (myActivePopup != null) {
+			myActivePopup.hide_();
+			myActivePopup = null;
+		}
+	}
+
+	public final void showPopup(String id) {
+		hideActivePopup();
+		myActivePopup = myPopups.get(id);
+		if (myActivePopup != null) {
+			myActivePopup.show_();
 		}
 	}
 
@@ -182,16 +195,30 @@ public abstract class ZLApplication {
 		}
 	}
 
-	static public interface ButtonPanel {
-		void updateStates();
-		void hide();
+	public static abstract class PopupPanel {
+		protected final ZLApplication Application;
+
+		protected PopupPanel(ZLApplication application) {
+			application.myPopups.put(getId(), this);
+			Application = application;
 		}
-	private final List<ButtonPanel> myPanels = new LinkedList<ButtonPanel>();
-	public final List<ButtonPanel> buttonPanels() {
-		return Collections.unmodifiableList(myPanels);
+
+		abstract public String getId();
+		abstract protected void update();
+		abstract protected void hide_();
+		abstract protected void show_();
 	}
-	public final void registerButtonPanel(ButtonPanel panel) {
-		myPanels.add(panel);
+
+	private final HashMap<String,PopupPanel> myPopups = new HashMap<String,PopupPanel>();
+	private PopupPanel myActivePopup;
+	public final Collection<PopupPanel> popupPanels() {
+		return myPopups.values();
+	}
+	public final PopupPanel getActivePopup() {
+		return myActivePopup;
+	}
+	public final PopupPanel getPopupById(String id) {
+		return myPopups.get(id);
 	}
 
 	public int getBatteryLevel() {