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/*
* MicroEmulator
* Copyright (C) 2001 Bartek Teodorczyk
* Copyright (C) 2005 Andres Navarro
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contributor(s):
* 3GLab
*/
package javax.microedition.lcdui;
//TODO implement pointer events
public class List extends Screen implements Choice
{
public static final Command SELECT_COMMAND = new Command("", Command.SCREEN, 0);
ChoiceGroup choiceGroup;
private Command selCommand;
private int initialPressedItem;
public List(String title, int listType)
{
super(title);
if (listType != Choice.IMPLICIT &&
listType != Choice.MULTIPLE &&
listType != Choice.EXCLUSIVE)
throw new IllegalArgumentException("Illegal list type");
if (listType == Choice.IMPLICIT) {
// this is necessary because IMPLICIT is not
// a valid ChoiceGroup type
choiceGroup = new ChoiceGroup(null, Choice.EXCLUSIVE);
choiceGroup.choiceType = Choice.IMPLICIT;
} else {
choiceGroup = new ChoiceGroup(null, listType);
}
choiceGroup.setOwner(this);
choiceGroup.setFocus(true);
this.selCommand = SELECT_COMMAND;
this.initialPressedItem = -1;
}
public List(String title, int listType, String[] stringElements, Image[] imageElements)
{
super(title);
if (listType == Choice.IMPLICIT) {
// this is necessary because IMPLICIT is not
// a valid ChoiceGroup type,
// exlusive is used because it has a default
// selected value
choiceGroup = new ChoiceGroup(null, Choice.EXCLUSIVE, stringElements, imageElements);
choiceGroup.choiceType = Choice.IMPLICIT;
for (int i = 0; i < size(); i++) {
set(i, getString(i), null);
}
} else {
choiceGroup = new ChoiceGroup(null, listType, stringElements, imageElements);
}
choiceGroup.setOwner(this);
choiceGroup.setFocus(true);
this.selCommand = SELECT_COMMAND;
this.initialPressedItem = -1;
}
public int append(String stringPart, Image imagePart)
{
return choiceGroup.append(stringPart, imagePart);
}
public void delete(int elementNum)
{
choiceGroup.delete(elementNum);
}
public void deleteAll()
{
choiceGroup.deleteAll();
}
public int getFitPolicy()
{
return choiceGroup.getFitPolicy();
}
public Font getFont(int elementNum)
{
return choiceGroup.getFont(elementNum);
}
public Image getImage(int elementNum)
{
return choiceGroup.getImage(elementNum);
}
public int getSelectedFlags(boolean[] selectedArray_return)
{
return choiceGroup.getSelectedFlags(selectedArray_return);
}
public int getSelectedIndex()
{
return choiceGroup.getSelectedIndex();
}
public String getString(int elementNum)
{
return choiceGroup.getString(elementNum);
}
public void insert(int elementNum, String stringPart, Image imagePart)
{
choiceGroup.insert(elementNum, stringPart, imagePart);
}
public boolean isSelected(int elementNum)
{
return choiceGroup.isSelected(elementNum);
}
public void removeCommand(Command cmd)
{
// TODO implement
super.removeCommand(cmd);
}
public void set(int elementNum, String stringPart, Image imagePart) {
choiceGroup.set(elementNum, stringPart, imagePart);
}
public void setFitPolicy(int policy)
{
choiceGroup.setFitPolicy(policy);
}
public void setFont(int elementNum, Font font)
{
choiceGroup.setFont(elementNum, font);
}
public void setSelectCommand(Command command)
{
selCommand = command;
}
public void setSelectedFlags(boolean[] selectedArray)
{
choiceGroup.setSelectedFlags(selectedArray);
}
public void setSelectedIndex(int elementNum, boolean selected)
{
choiceGroup.setSelectedIndex(elementNum, selected);
}
public void setTicker(Ticker ticker)
{
super.setTicker(ticker);
// TODO size of changed probably
}
public void setTitle(String s)
{
// TODO implement
super.setTitle(s);
}
void keyPressed(int keyCode)
{
if(Display.getGameAction(keyCode) == Canvas.FIRE
&& choiceGroup.select() && super.getCommandListener() != null
&& choiceGroup.choiceType == Choice.IMPLICIT) {
super.getCommandListener().commandAction(selCommand, this);
} else {
super.keyPressed(keyCode);
}
}
void pointerPressed(int x, int y) {
// TODO currently only IMPLICIT type is implemented
Ticker ticker = getTicker();
if (ticker != null) {
y -= ticker.getHeight();
}
y -= title.getHeight();
y -= 1;
if (y >= 0 && y < viewPortHeight) {
int pressedItem = choiceGroup.getItemIndexAt(x, y + viewPortY);
if (pressedItem != -1) {
setSelectedIndex(pressedItem, true);
initialPressedItem = pressedItem;
}
}
}
void pointerReleased(int x, int y) {
// TODO currently only IMPLICIT type is implemented
Ticker ticker = getTicker();
if (ticker != null) {
y -= ticker.getHeight();
}
y -= title.getHeight();
y -= 1;
if (y >= 0 && y < viewPortHeight) {
int releasedItem = choiceGroup.getItemIndexAt(x, y + viewPortY);
if (releasedItem != -1) {
if (releasedItem == initialPressedItem
&& super.getCommandListener() != null
&& choiceGroup.choiceType == Choice.IMPLICIT) {
super.getCommandListener().commandAction(SELECT_COMMAND, this);
}
}
}
}
int paintContent(Graphics g)
{
return choiceGroup.paint(g);
}
public int size()
{
return choiceGroup.size();
}
void showNotify() {
super.showNotify();
int heightToItem = choiceGroup.getHeightToItem(getSelectedIndex());
int heightAfterItem = heightToItem + choiceGroup.getItemHeight(getSelectedIndex());
if (viewPortY > heightToItem) {
viewPortY = heightToItem;
} else if ((viewPortY + viewPortHeight) < heightAfterItem) {
viewPortY = heightAfterItem - viewPortHeight;
}
}
int traverse(int gameKeyCode, int top, int bottom)
{
int traverse = choiceGroup.traverse(gameKeyCode, top, bottom, true);
if (traverse == Item.OUTOFITEM) {
return 0;
} else {
return traverse;
}
}
}
