/*
Реализация спецификаций CLDC версии 1.1 (JSR-139), MIDP версии 2.1 (JSR-118)
и других спецификаций для функционирования компактных приложений на языке
Java (мидлетов) в среде программного обеспечения Малик Эмулятор.
Copyright © 2016, 2019 Малик Разработчик
Это свободная программа: вы можете перераспространять ее и/или изменять
ее на условиях Меньшей Стандартной общественной лицензии GNU в том виде,
в каком она была опубликована Фондом свободного программного обеспечения;
либо версии 3 лицензии, либо (по вашему выбору) любой более поздней версии.
Эта программа распространяется в надежде, что она будет полезной,
но БЕЗО ВСЯКИХ ГАРАНТИЙ; даже без неявной гарантии ТОВАРНОГО ВИДА
или ПРИГОДНОСТИ ДЛЯ ОПРЕДЕЛЕННЫХ ЦЕЛЕЙ. Подробнее см. в Меньшей Стандартной
общественной лицензии GNU.
Вы должны были получить копию Меньшей Стандартной общественной лицензии GNU
вместе с этой программой. Если это не так, см.
<https://www.gnu.org/licenses/>.
*/
package javax.microedition.lcdui;
import malik.emulator.media.graphics.*;
public class List extends ScrollingScreen
implements Choice
{
private static final class Element extends ChoiceElement
{
public boolean visible;
public String truncated;
Element(boolean selected, Font font, String text, Image icon)
{
super(selected, font, text, icon);
}
}
public static final Command SELECT_COMMAND;
static final int CHECKBOX_WIDTH;
static final int CHECKBOX_HEIGHT;
static final Command CHECK_COMMAND;
private static final int ELEMENT_HEIGHT = 38;
private static final Command[] SELECT;
private static final String DEFAULT_EMPTY_LABEL = "(пусто)";
static
{
int i;
int s = RasterCanvas.getElementOfGUISizes(15, 0, 0);
SELECT_COMMAND = new Command("Выбрать", Command.OK, 0);
CHECKBOX_WIDTH = (i = (short) s) <= 0 ? 16 : i;
CHECKBOX_HEIGHT = (i = s >> 16) <= 0 ? 16 : i;
CHECK_COMMAND = new Command("\u2713", Command.OK, 0);
SELECT = new Command[] {
new Command("Отметить все", Command.SCREEN, 0),
new Command("Снять все", Command.SCREEN, 0),
new Command("Переключить все", Command.SCREEN, 0)
};
}
private int type;
private int fitPolicy;
private int checkboxFocused;
private int checkboxPressed;
private int checkedElementIndex;
private int focusedElementIndex;
private int elementsCount;
private Element[] elements;
private Command selectCommand;
private String emptyLabel;
private Object lock;
public List(String title, int type)
{
this(false, false, title, null, null, SELECT_COMMAND, null,
type, new String[0], null, DEFAULT_EMPTY_LABEL);
}
public List(String title, int type, String[] elements, Image[] icons)
{
this(false, false, title, null, null, SELECT_COMMAND, null,
type, elements, icons, DEFAULT_EMPTY_LABEL);
}
public List(boolean fullScreenMode, String title, Ticker ticker,
Command[] commands, Command selectCommand, CommandListener listener,
int type, String[] elements, Image[] icons)
{
this(true, fullScreenMode, title, ticker, commands, selectCommand, listener,
type, elements, icons, DEFAULT_EMPTY_LABEL);
}
public List(boolean fullScreenMode, String title, Ticker ticker,
Command[] commands, Command selectCommand, CommandListener listener,
int type, String[] elements, Image[] icons, String emptyLabel)
{
this(true, fullScreenMode, title, ticker, commands, selectCommand, listener,
type, elements, icons, emptyLabel);
}
private List(boolean system, boolean fullScreenMode, String title, Ticker ticker,
Command[] commands, Command selectCommand, CommandListener listener,
int type, String[] elements, Image[] icons, String emptyLabel)
{
super(system, fullScreenMode, title, ticker,
type == MULTIPLE ? concatCommands(SELECT, commands) : commands,
elements == null || elements.length == 0 ? null :
type == IMPLICIT ? selectCommand : CHECK_COMMAND, listener, VERTICAL);
int i;
int len;
String[] lines;
Element[] list;
Font font;
if(type != EXCLUSIVE && type != MULTIPLE && type != IMPLICIT)
{
throw new IllegalArgumentException("List: " +
"недопустимое значение параметра type.");
}
if(elements == null)
{
throw new NullPointerException("List: " +
"параметр elements равен нулевой ссылке.");
}
Array.copy(elements, 0, lines = new String[len = elements.length], 0, len);
for(i = len; i-- > 0; )
{
if(lines[i] == null)
{
throw new NullPointerException("List: " +
"параметр elements содержит нулевые ссылки.");
}
}
if(icons != null && icons.length != len)
{
throw new IllegalArgumentException("List: " +
"параметр icons имеет длину, отличную от длины параметра elements.");
}
getVertScrollBar().setRange(ELEMENT_HEIGHT * len);
font = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN, Font.SIZE_MEDIUM);
for(list = new Element[i = len]; i-- > 0; )
{
list[i] = new Element(type == EXCLUSIVE && i == 0, font,
lines[i], icons == null ? null : icons[i]);
}
this.type = type;
this.fitPolicy = TEXT_WRAP_DEFAULT;
this.checkboxFocused = -1;
this.checkboxPressed = -1;
this.checkedElementIndex = 0;
this.focusedElementIndex = 0;
this.elementsCount = len;
this.elements = list;
this.selectCommand = type == IMPLICIT ? selectCommand : null;
this.emptyLabel = emptyLabel;
this.lock = new Object();
}
public void removeCommand(Command command)
{
synchronized(lock)
{
if(command == selectCommand)
{
selectCommand = null;
}
}
super.removeCommand(command);
}
public void setFitPolicy(int policy)
{
if(policy != TEXT_WRAP_DEFAULT && policy != TEXT_WRAP_ON && policy != TEXT_WRAP_OFF)
{
throw new IllegalArgumentException("List.setFitPolicy: " +
"недопустимое значение параметра policy.");
}
this.fitPolicy = policy;
}
public void setSelectedIndex(int elementIndex, boolean selected)
{
int error;
int checked;
Element[] list;
Element elem;
Element prev;
error = 0;
synchronized(lock)
{
label0:
{
if(elementIndex < 0 || elementIndex >= elementsCount)
{
error = 1;
break label0;
}
switch(type)
{
case EXCLUSIVE:
if(elementIndex != (checked = checkedElementIndex))
{
checkedElementIndex = elementIndex;
(elem = (list = elements)[elementIndex]).selected = true;
(prev = list[checked]).selected = false;
if(elem.visible || prev.visible)
{
callSeriallyPaintScreen(CLIENT);
}
}
break;
case MULTIPLE:
if((elem = elements[elementIndex]).selected != selected)
{
elem.selected = selected;
if(elem.visible)
{
callSeriallyPaintScreen(CLIENT);
}
}
break;
case IMPLICIT:
if(elementIndex != focusedElementIndex)
{
focusedElementIndex = elementIndex;
correctScrollBarPositionToItem();
}
break;
}
}
}
if(error == 1)
{
throw new IndexOutOfBoundsException("List.setSelectedIndex: " +
"параметр elementIndex выходит из диапазона.");
}
}
public void setSelectedFlags(boolean[] selected)
{
boolean sel;
boolean needRepaint;
int i;
int len;
int error;
int checked;
int elementIndex;
Element[] list;
Element elem;
Element prev;
if(selected == null)
{
throw new NullPointerException("List.setSelectedFlags: " +
"параметр selected равен нулевой ссылке.");
}
error = 0;
synchronized(lock)
{
label0:
{
if(selected.length < (len = elementsCount))
{
error = 1;
break label0;
}
switch(type)
{
case EXCLUSIVE:
elementIndex = -1;
for(i = 0; i < len; i++)
{
if(selected[i] == false)
{
continue;
}
elementIndex = i;
break;
}
if(elementIndex < 0)
{
break;
}
if(elementIndex != (checked = checkedElementIndex))
{
checkedElementIndex = elementIndex;
(elem = (list = elements)[elementIndex]).selected = true;
(prev = list[checked]).selected = false;
if(elem.visible || prev.visible)
{
callSeriallyPaintScreen(CLIENT);
}
}
break;
case MULTIPLE:
needRepaint = false;
list = elements;
for(i = len; i-- > 0; )
{
if((elem = list[i]).selected == (sel = selected[i]))
{
continue;
}
elem.selected = sel;
if(elem.visible)
{
needRepaint = true;
}
}
if(needRepaint)
{
callSeriallyPaintScreen(CLIENT);
}
break;
case IMPLICIT:
elementIndex = -1;
for(i = 0; i < len; i++)
{
if(selected[i] == false)
{
continue;
}
elementIndex = i;
break;
}
if(elementIndex < 0)
{
break;
}
if(elementIndex != focusedElementIndex)
{
focusedElementIndex = elementIndex;
correctScrollBarPositionToItem();
}
break;
}
}
}
if(error == 1)
{
throw new IllegalArgumentException("List.setSelectedFlags: " +
"длина параметра selected меньше количества элементов списка.");
}
}
public void setFont(int elementIndex, Font font)
{
int error;
Element elem;
if(font == null)
{
font = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN, Font.SIZE_MEDIUM);
}
error = 0;
synchronized(lock)
{
label0:
{
if(elementIndex < 0 || elementIndex >= elementsCount)
{
error = 1;
break label0;
}
if(font != (elem = elements[elementIndex]).font)
{
elem.font = font;
correctTruncated(elem);
if(elem.visible)
{
callSeriallyPaintScreen(CLIENT);
}
}
}
}
if(error == 1)
{
throw new IndexOutOfBoundsException("List.setFont: " +
"параметр elementIndex выходит из диапазона.");
}
}
public void set(int elementIndex, String text, Image icon)
{
int error;
Element elem;
if(text == null)
{
throw new NullPointerException("List.set: " +
"параметр text равен нулевой ссылке.");
}
error = 0;
synchronized(lock)
{
label0:
{
if(elementIndex < 0 || elementIndex >= elementsCount)
{
error = 1;
break label0;
}
(elem = elements[elementIndex]).text = text;
elem.icon = icon;
correctTruncated(elem);
if(elem.visible)
{
callSeriallyPaintScreen(CLIENT);
}
}
}
if(error == 1)
{
throw new IndexOutOfBoundsException("List.set: " +
"параметр elementIndex выходит из диапазона.");
}
}
public void insert(int elementIndex, String text, Image icon)
{
int t;
int i;
int len;
int error;
Element[] list;
Element elem;
if(text == null)
{
throw new NullPointerException("List.insert: " +
"параметр text равен нулевой ссылке.");
}
error = 0;
synchronized(lock)
{
label0:
{
if(elementIndex < 0 || elementIndex > (len = elementsCount))
{
error = 1;
break label0;
}
if(len == (list = elements).length)
{
Array.copy(list, 0, list = elements = new Element[(len << 1) + 1], 0, len);
}
if((i = len - elementIndex) > 0)
{
Array.copy(list, elementIndex, list, elementIndex + 1, i);
}
list[elementIndex] = elem = new Element((t = type) == EXCLUSIVE && len == 0,
Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN, Font.SIZE_MEDIUM),
text, icon);
correctTruncated(elem);
elementsCount = ++len;
checkboxPressed = -1;
checkboxFocused = -1;
if(len > 1)
{
if((i = checkedElementIndex) >= elementIndex)
{
checkedElementIndex = i + 1;
}
if((i = focusedElementIndex) >= elementIndex)
{
focusedElementIndex = i + 1;
}
} else
{
setDefaultCommand(t == IMPLICIT ? selectCommand : CHECK_COMMAND);
}
getVertScrollBar().setRange(ELEMENT_HEIGHT * len);
}
}
if(error == 1)
{
throw new IndexOutOfBoundsException("List.insert: " +
"параметр elementIndex выходит из диапазона.");
}
}
public void delete(int elementIndex)
{
int i;
int len;
int error;
Element[] list;
error = 0;
synchronized(lock)
{
label0:
{
if(elementIndex < 0 || elementIndex >= (len = elementsCount))
{
error = 1;
break label0;
}
list = elements;
if((i = len - elementIndex - 1) > 0)
{
Array.copy(list, elementIndex + 1, list, elementIndex, i);
}
list[--len] = null;
elementsCount = len;
checkboxPressed = -1;
checkboxFocused = -1;
if(len > 0)
{
label1:
{
if((i = checkedElementIndex) > elementIndex)
{
checkedElementIndex = i - 1;
break label1;
}
if(i == elementIndex)
{
checkedElementIndex = i = i == len ? i - 1 : i;
if(type == EXCLUSIVE)
{
list[i].selected = true;
}
}
}
if((i = focusedElementIndex) == elementIndex && i == len || i > elementIndex)
{
focusedElementIndex = i - 1;
}
} else
{
setDefaultCommand(null);
}
getVertScrollBar().setRange(ELEMENT_HEIGHT * len);
}
}
if(error == 1)
{
throw new IndexOutOfBoundsException("List.delete: " +
"параметр elementIndex выходит из диапазона.");
}
}
public void deleteAll()
{
int i;
int len;
Element[] list;
synchronized(lock)
{
if((len = elementsCount) > 0)
{
for(list = elements, i = len; i-- > 0; list[i] = null);
elementsCount = 0;
checkboxPressed = -1;
checkboxFocused = -1;
checkedElementIndex = 0;
focusedElementIndex = 0;
setDefaultCommand(null);
getVertScrollBar().setRange(0);
}
}
}
public boolean isSelected(int elementIndex)
{
boolean result = false;
int error = 0;
synchronized(lock)
{
label0:
{
if(elementIndex < 0 || elementIndex >= elementsCount)
{
error = 1;
break label0;
}
switch(type)
{
case EXCLUSIVE:
result = checkedElementIndex == elementIndex;
break;
case MULTIPLE:
result = elements[elementIndex].selected;
break;
case IMPLICIT:
result = focusedElementIndex == elementIndex;
break;
}
}
}
if(error == 1)
{
throw new IndexOutOfBoundsException("List.isSelected: " +
"параметр elementIndex выходит из диапазона.");
}
return result;
}
public int append(String text, Image icon)
{
int t;
int len;
int result;
Element[] list;
Element elem;
if(text == null)
{
throw new NullPointerException("List.append: " +
"параметр text равен нулевой ссылке.");
}
synchronized(lock)
{
if((len = elementsCount) == (list = elements).length)
{
Array.copy(list, 0, list = elements = new Element[(len << 1) + 1], 0, len);
}
list[result = len] = elem = new Element((t = type) == EXCLUSIVE && len == 0,
Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN, Font.SIZE_MEDIUM),
text, icon);
correctTruncated(elem);
elementsCount = ++len;
checkboxPressed = -1;
checkboxFocused = -1;
if(len == 1)
{
setDefaultCommand(t == IMPLICIT ? selectCommand : CHECK_COMMAND);
}
getVertScrollBar().setRange(ELEMENT_HEIGHT * len);
}
return result;
}
public int size()
{
return elementsCount;
}
public int getFitPolicy()
{
return fitPolicy;
}
public int getSelectedIndex()
{
if(elementsCount == 0)
{
return -1;
}
switch(type)
{
default:
return -1;
case EXCLUSIVE:
return checkedElementIndex;
case IMPLICIT:
return focusedElementIndex;
}
}
public int getSelectedFlags(boolean[] selected)
{
int f;
int i;
int len;
int error;
int result;
Element[] list;
if(selected == null)
{
throw new NullPointerException("List.getSelectedFlags: " +
"параметр selected равен нулевой ссылке.");
}
result = 0;
error = 0;
synchronized(lock)
{
label0:
{
if(selected.length < (len = elementsCount))
{
error = 1;
break label0;
}
switch(type)
{
case EXCLUSIVE:
result = len > 0 ? 1 : 0;
f = checkedElementIndex;
for(i = len; i-- > 0; selected[i] = i == f);
break;
case MULTIPLE:
result = 0;
list = elements;
for(i = len; i-- > 0; )
{
if(selected[i] = list[i].selected)
{
result++;
}
}
break;
case IMPLICIT:
result = len > 0 ? 1 : 0;
f = focusedElementIndex;
for(i = len; i-- > 0; selected[i] = i == f);
break;
}
}
}
if(error == 1)
{
throw new IllegalArgumentException("List.getSelectedFlags: " +
"длина параметра selected меньше количества элементов списка.");
}
return result;
}
public Font getFont(int elementIndex)
{
int error;
Font result;
error = 0;
synchronized(lock)
{
label0:
{
if(elementIndex < 0 || elementIndex >= elementsCount)
{
error = 1;
result = null;
break label0;
}
result = elements[elementIndex].font;
}
}
if(error == 1)
{
throw new IndexOutOfBoundsException("List.getFont: " +
"параметр elementIndex выходит из диапазона.");
}
return result;
}
public Image getImage(int elementIndex)
{
int error;
Image result;
error = 0;
synchronized(lock)
{
label0:
{
if(elementIndex < 0 || elementIndex >= elementsCount)
{
error = 1;
result = null;
break label0;
}
result = elements[elementIndex].icon;
}
}
if(error == 1)
{
throw new IndexOutOfBoundsException("List.getImage: " +
"параметр elementIndex выходит из диапазона.");
}
return result;
}
public String getString(int elementIndex)
{
int error;
String result;
error = 0;
synchronized(lock)
{
label0:
{
if(elementIndex < 0 || elementIndex >= elementsCount)
{
error = 1;
result = null;
break label0;
}
result = elements[elementIndex].text;
}
}
if(error == 1)
{
throw new IndexOutOfBoundsException("List.getString: " +
"параметр elementIndex выходит из диапазона.");
}
return result;
}
public void setSelectCommand(Command selectCommand)
{
boolean f;
if(type != IMPLICIT)
{
return;
}
synchronized(lock)
{
f = false;
if(this.selectCommand != selectCommand)
{
this.selectCommand = selectCommand;
f = elementsCount > 0;
}
}
if(!f)
{
return;
}
setDefaultCommand(selectCommand);
}
void paint(Graphics render, ScrollBar horzScrollBar, ScrollBar vertScrollBar)
{
int t;
int i;
int len;
int top;
int bottom;
int pressed;
int focused;
int clientWidth;
int leftMarginCheckbox;
int leftMarginIcon;
int leftMarginText;
int topMarginCheckbox;
int topMarginElement;
Element[] list;
Element elem;
Image icon;
Font font;
clientWidth = getClientWidth();
render.setColor(RasterCanvas.getSystemColor(0x28));
synchronized(lock)
{
if((len = elementsCount) == 0)
{
font = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_BOLD, Font.SIZE_SMALL);
render.setFont(font);
render.drawString(truncate(emptyLabel, font, clientWidth),
clientWidth / 2, 0, Graphics.HCENTER | Graphics.TOP);
} else
{
bottom = (top = vertScrollBar.getPosition()) + vertScrollBar.getPage();
pressed = checkboxPressed;
focused = focusedElementIndex;
leftMarginText = (leftMarginIcon = (leftMarginCheckbox = 3) +
((t = type) == IMPLICIT ? 0 : CHECKBOX_WIDTH + 3)) + 35;
topMarginCheckbox = (ELEMENT_HEIGHT - CHECKBOX_HEIGHT) >> 1;
topMarginElement = 0;
list = elements;
for(i = 0; i < len; render.translate(0, ELEMENT_HEIGHT),
topMarginElement += ELEMENT_HEIGHT, i++)
{
if(!((elem = list[i]).visible = topMarginElement < bottom &&
topMarginElement + ELEMENT_HEIGHT > top))
{
continue;
}
if(i == focused)
{
render.drawElementOfGUI(1, 0, 0, 0, 0, clientWidth, ELEMENT_HEIGHT);
}
switch(t)
{
case EXCLUSIVE:
render.drawElementOfGUI(12,
elem.selected ? 1 : 0, i == pressed ? 1 : 0,
leftMarginCheckbox, topMarginCheckbox,
CHECKBOX_WIDTH, CHECKBOX_HEIGHT);
break;
case MULTIPLE:
render.drawElementOfGUI(15,
elem.selected ? 1 : 0, i == pressed ? 1 : 0,
leftMarginCheckbox, topMarginCheckbox,
CHECKBOX_WIDTH, CHECKBOX_HEIGHT);
break;
}
if((icon = elem.icon) != null)
{
render.drawStretchRegion(icon, 0, 0,
icon.getWidth(), icon.getHeight(), 0,
leftMarginIcon, 3, 32, 32, 0);
}
render.setFont(font = elem.font);
render.drawString(elem.truncated,
icon != null ? leftMarginText : leftMarginIcon,
(ELEMENT_HEIGHT - font.getHeight()) >> 1, 0);
}
}
}
}
void onSizeChanged(int width, int height)
{
int i;
Element[] list;
synchronized(lock)
{
for(list = elements, i = elementsCount; i-- > 0; correctTruncated(list[i]));
}
super.onSizeChanged(width, height);
}
void onKeyPressed(int key, int charCode)
{
int i;
MIDletProxy proxy;
if(key == (proxy = MIDletProxy.getInstance()).getKeyUsedAs(MIDletProxy.DEVICE_KEY_POUND))
{
synchronized(lock)
{
if((i = focusedElementIndex) >= 0 && i < elementsCount)
{
ChoiceElementDetailsScreen.show(proxy.getEmulatorScreen(),
super.getTitle(), elements[i], this);
}
}
return;
}
if(!super.keyHandling(key))
{
moveCursor(key);
return;
}
super.onKeyPressed(key, charCode);
}
void onKeyRepeated(int key, int charCode)
{
if(!super.keyHandling(key))
{
moveCursor(key);
return;
}
super.onKeyRepeated(key, charCode);
}
void onClientPointerPressed(int x, int y, int button)
{
int i;
synchronized(lock)
{
if(button == MIDletProxy.BUTTON_MAIN && (i = y / ELEMENT_HEIGHT) < elementsCount)
{
if(type != IMPLICIT && x < CHECKBOX_WIDTH + 6)
{
checkboxFocused = i;
checkboxPressed = i;
}
focusedElementIndex = i;
correctScrollBarPositionToItem();
}
}
}
void onClientPointerDragged(int x, int y)
{
int i;
int f;
synchronized(lock)
{
if((f = checkboxFocused) >= 0)
{
if(checkboxPressed != (checkboxPressed =
f == (x < CHECKBOX_WIDTH + 6 ? y / ELEMENT_HEIGHT : -1) ? f : -1))
{
callSeriallyPaintScreen(CLIENT);
}
}
else if((i = y / ELEMENT_HEIGHT) < elementsCount)
{
focusedElementIndex = i;
correctScrollBarPositionToItem();
}
}
}
void onClientPointerReleased(int x, int y, int button)
{
int f;
Element[] list;
Element elem;
synchronized(lock)
{
if(button == MIDletProxy.BUTTON_MAIN)
{
f = checkboxPressed;
checkboxFocused = -1;
checkboxPressed = -1;
if(f >= 0 && f < elementsCount)
{
switch(type)
{
case EXCLUSIVE:
(list = elements)[checkedElementIndex].selected = false;
list[checkedElementIndex = f].selected = true;
break;
case MULTIPLE:
(elem = elements[f]).selected = !elem.selected;
break;
}
callSeriallyPaintScreen(CLIENT);
}
}
}
}
void onCommandAction(Command command)
{
int i;
int f;
Element[] list;
Element elem;
if(command == SELECT[0])
{
synchronized(lock)
{
list = elements;
for(i = elementsCount; i-- > 0; list[i].selected = true);
callSeriallyPaintScreen(CLIENT);
}
return;
}
if(command == SELECT[1])
{
synchronized(lock)
{
list = elements;
for(i = elementsCount; i-- > 0; list[i].selected = false);
callSeriallyPaintScreen(CLIENT);
}
return;
}
if(command == SELECT[2])
{
synchronized(lock)
{
list = elements;
for(i = elementsCount; i-- > 0; (elem = list[i]).selected = !elem.selected);
callSeriallyPaintScreen(CLIENT);
}
return;
}
if(command == CHECK_COMMAND)
{
synchronized(lock)
{
if((f = focusedElementIndex) >= 0 && f < elementsCount)
{
switch(type)
{
case EXCLUSIVE:
(list = elements)[checkedElementIndex].selected = false;
list[checkedElementIndex = f].selected = true;
break;
case MULTIPLE:
(elem = elements[f]).selected = !elem.selected;
break;
}
callSeriallyPaintScreen(CLIENT);
}
}
return;
}
super.onCommandAction(command);
}
private void moveCursor(int key)
{
int len;
MIDletProxy proxy;
if(key == (proxy = MIDletProxy.getInstance()).getKeyUsedAs(MIDletProxy.DEVICE_KEY_UP))
{
synchronized(lock)
{
if((len = elementsCount) > 0)
{
focusedElementIndex = (focusedElementIndex + len - 1) % len;
correctScrollBarPositionToItem();
}
}
return;
}
if(key == proxy.getKeyUsedAs(MIDletProxy.DEVICE_KEY_DOWN))
{
synchronized(lock)
{
if((len = elementsCount) > 0)
{
focusedElementIndex = (focusedElementIndex + 1) % len;
correctScrollBarPositionToItem();
}
}
}
}
private void correctTruncated(Element elem)
{
elem.truncated = Displayable.truncate(elem.text, elem.font, getClientWidth() -
(type != IMPLICIT ? List.CHECKBOX_WIDTH + 3 : 0) -
(elem.icon != null ? 35 : 0) - 6);
}
private void correctScrollBarPositionToItem()
{
int pos;
int need;
ScrollBar scrollbar = getVertScrollBar();
if((pos = scrollbar.getPosition()) > (need = focusedElementIndex * ELEMENT_HEIGHT))
{
scrollbar.setPosition(need);
}
else if(pos < (need -= scrollbar.getPage() - ELEMENT_HEIGHT))
{
scrollbar.setPosition(need);
}
callSeriallyPaintScreen(CLIENT);
}
}
