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/*
* MicroEmulator
* Copyright (C) 2001 Bartek Teodorczyk
*
* 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
* Robert Helmer
*/
package javax.microedition.lcdui;
import org.microemu.device.DeviceFactory;
import org.microemu.device.InputMethod;
import org.microemu.device.InputMethodEvent;
import org.microemu.device.InputMethodListener;
public class TextField extends Item
{
public static final int ANY = 0;
public static final int EMAILADDR = 1;
public static final int NUMERIC = 2;
public static final int PHONENUMBER = 3;
public static final int URL = 4;
public static final int DECIMAL = 5;
public static final int PASSWORD = 0x10000;
public static final int UNEDITABLE = 0x20000;
public static final int SENSITIVE = 0x40000;
public static final int NON_PREDICTIVE = 0x80000;
public static final int INITIAL_CAPS_WORD = 0x100000;
public static final int INITIAL_CAPS_SENTENCE = 0x200000;
public static final int CONSTRAINT_MASK = 0xffff;
StringComponent stringComponent;
private String field;
private int caret;
private boolean caretVisible;
private int maxSize;
private int constraints;
private InputMethodListener inputMethodListener = new InputMethodListener()
{
public void caretPositionChanged(InputMethodEvent event)
{
setCaretPosition(event.getCaret());
setCaretVisible(true);
repaint();
}
public void inputMethodTextChanged(InputMethodEvent event)
{
setCaretVisible(false);
setString(event.getText(), event.getCaret());
repaint();
if (owner instanceof Form) {
((Form) owner).fireItemStateListener();
}
}
public int getCaretPosition()
{
return TextField.this.getCaretPosition();
}
public String getText()
{
return TextField.this.getString();
}
public int getConstraints()
{
return TextField.this.getConstraints();
}
};
public TextField(String label, String text, int maxSize, int constraints)
{
super(label);
if (maxSize <= 0) {
throw new IllegalArgumentException();
}
setConstraints(constraints);
if (!InputMethod.validate(text, constraints)) {
throw new IllegalArgumentException();
}
this.maxSize = maxSize;
stringComponent = new StringComponent();
if (text != null) {
setString(text);
} else {
setString("");
}
stringComponent.setWidthDecreaser(8);
}
public String getString()
{
return field;
}
public void setString(String text)
{
setString(text, text.length());
}
void setString(String text, int caret)
{
if (!InputMethod.validate(text, constraints)) {
throw new IllegalArgumentException();
}
if (text == null) {
field = "";
stringComponent.setText("");
} else {
if (text.length() > maxSize) {
throw new IllegalArgumentException();
}
field = text;
if ((constraints & PASSWORD) == 0) {
stringComponent.setText(text);
} else {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < text.length(); i++) {
sb.append('*');
}
stringComponent.setText(sb.toString());
}
}
setCaretPosition(caret);
setCaretVisible(false);
repaint();
}
public int getChars(char[] data)
{
if (data.length < field.length()) {
throw new ArrayIndexOutOfBoundsException();
}
getString().getChars(0, field.length(), data, 0);
return field.length();
}
public void setChars(char[] data, int offset, int length)
{
if (data == null) {
setString("");
} else {
if (length > maxSize) {
throw new IllegalArgumentException();
}
String newtext = new String(data, offset, length);
if (!InputMethod.validate(newtext, constraints)) {
throw new IllegalArgumentException();
}
setString(newtext);
}
repaint();
}
public void insert(String src, int position)
{
if (!InputMethod.validate(src, constraints)) {
throw new IllegalArgumentException();
}
if (field.length() + src.length() > maxSize) {
throw new IllegalArgumentException();
}
String newtext = "";
if (position > 0) {
newtext = getString().substring(0, position);
}
newtext += src;
if (position < field.length()) {
newtext += getString().substring(position + 1);
}
setString(newtext);
repaint();
}
public void insert(char[] data, int offset, int length, int position)
{
if (offset + length > data.length) {
throw new ArrayIndexOutOfBoundsException();
}
insert(new String(data, offset, length), position);
}
public void delete(int offset, int length)
{
if (offset + length > field.length()) {
throw new StringIndexOutOfBoundsException();
}
String newtext = "";
if (offset > 0) {
newtext = getString().substring(0, offset);
}
if (offset + length < field.length()) {
newtext += getString().substring(offset + length);
}
setString(newtext);
repaint();
}
public int getMaxSize()
{
return maxSize;
}
public int setMaxSize(int maxSize)
{
if (maxSize <= 0) {
throw new IllegalArgumentException();
}
if (field.length() > maxSize) {
setString(getString().substring(0, maxSize));
}
this.maxSize = maxSize;
return maxSize;
}
public int size()
{
return field.length();
}
public int getCaretPosition()
{
return caret;
}
public void setConstraints(int constraints)
{
if ((constraints & TextField.CONSTRAINT_MASK) < ANY
|| (constraints & TextField.CONSTRAINT_MASK) > DECIMAL) {
throw new IllegalArgumentException("constraints " + constraints + " is an illegal value");
}
this.constraints = constraints;
if (!InputMethod.validate(field, constraints)) {
setString("");
}
}
public int getConstraints()
{
return constraints;
}
public void setInitialInputMode(String characterSubset)
{
// TODO implement
}
boolean isFocusable()
{
return true;
}
int getHeight()
{
return super.getHeight() + stringComponent.getHeight() + 8;
}
int paint(Graphics g)
{
super.paintContent(g);
g.translate(0, super.getHeight());
int savedColor = g.getColor();
if (!hasFocus()) {
g.setGrayScale(127);
}
g.drawRect(
1, 1,
owner.getWidth() - 3, stringComponent.getHeight() + 4);
if (!hasFocus()) {
g.setColor(savedColor);
}
g.translate(3, 3);
paintContent(g);
g.translate(-3, -3);
g.translate(0, -super.getHeight());
return getHeight();
}
void paintContent(Graphics g)
{
stringComponent.paint(g);
if (caretVisible) {
int x_pos = stringComponent.getCharPositionX(caret);
int y_pos = stringComponent.getCharPositionY(caret);
g.drawLine(x_pos, y_pos, x_pos, y_pos + Font.getDefaultFont().getHeight());
}
}
void setCaretPosition(int position)
{
caret = position;
}
void setCaretVisible(boolean state)
{
caretVisible = state;
}
int traverse(int gameKeyCode, int top, int bottom, boolean action)
{
if (gameKeyCode == Canvas.UP) {
if (top > 0) {
return -top;
} else {
return Item.OUTOFITEM;
}
}
if (gameKeyCode == Canvas.DOWN) {
if (getHeight() > bottom) {
return getHeight() - bottom;
} else {
return Item.OUTOFITEM;
}
}
return 0;
}
void setFocus(boolean hasFocus)
{
super.setFocus(hasFocus);
if (hasFocus) {
// register input listener
InputMethod inputMethod = DeviceFactory.getDevice().getInputMethod();
inputMethod.setInputMethodListener(inputMethodListener);
inputMethod.setMaxSize(getMaxSize());
setCaretVisible(true);
} else {
// unregister input listener
DeviceFactory.getDevice().getInputMethod().removeInputMethodListener(inputMethodListener);
setCaretVisible(false);
}
}
}
