/**
*
* Copyright 2014
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*
* @project loon
* @author cping
* @email：javachenpeng@yahoo.com
* @version 0.4.1
*
* Example1:
*
* new LTextField("", 0, 0,35);
*
* Example3:
*
* LTextField field = new LTextField("", 0,0,35);
* field.setFontColor(LColor.white);
* field.setHideBackground(true);
*
* 文本输入类，可以用setHideBackground函数隐藏背景，从而把其放置到理想的输入背景中
*
*/
package loon.component;
import loon.LSystem;
import loon.LTexture;
import loon.canvas.LColor;
import loon.component.skin.SkinManager;
import loon.event.GameKey;
import loon.event.SysInputFactory;
import loon.event.SysInputFactory.OnscreenKeyboard;
import loon.event.SysKey;
import loon.font.IFont;
import loon.opengl.GLEx;
import loon.utils.MathUtils;
import loon.utils.StringUtils;
public class LTextField extends LTextBar {
public static LTextField at(int x, int y) {
return new LTextField("", x, y);
}
@Override
public String getUIName() {
return "TextField";
}
public OnscreenKeyboard getOnscreenKeyboard() {
return SysInputFactory.getKeyBoard();
}
public void setOnscreenKeyboard(OnscreenKeyboard keyboard) {
SysInputFactory.setKeyBoard(keyboard);
}
public static final int INPUT_STRING = 0, INPUT_SIGNED_INTEGER_NUM = 1,
INPUT_UNSIGNED_INTEGER_NUM = 2,
INPUT_INTEGER = INPUT_SIGNED_INTEGER_NUM,
INPUT_SIGNED_FLOATING_POINT_NUM = 3,
INPUT_UNSIGNED_FLOATING_POINT_NUM = 4,
INPUT_FLOATING_POINT_NUM = INPUT_SIGNED_INTEGER_NUM;
private String cursor = "_";
protected int INPUT_TYPE = INPUT_STRING;
protected int startidx, limit;
public LTextField(IFont font, String txt, LTexture left, LTexture right,
LTexture body, int x, int y, LColor textcolor, int type, int limit) {
super(txt, left, right, body, x, y, textcolor, font);
this._font = font;
this.INPUT_TYPE = type;
this.startidx = txt.length();
this.limit = limit + startidx;
this.setFocusable(true);
}
public LTextField(String txt, LTexture left, LTexture right, LTexture body,
int x, int y, LColor textcolor, int type, int limit) {
this(SkinManager.get().getTextBarSkin().getFont(), txt, left, right,
body, x, y, textcolor, type, limit);
}
public LTextField(IFont font, String txt, int x, int y, LColor textcolor,
int inp, int limit) {
this(font, txt, SkinManager.get().getTextBarSkin().getLeftTexture(),
SkinManager.get().getTextBarSkin().getRightTexture(),
SkinManager.get().getTextBarSkin().getBodyTexture(), x, y,
textcolor, inp, limit);
}
public LTextField(String txt, int x, int y, LColor textcolor, int inp,
int limit) {
this(txt, SkinManager.get().getTextBarSkin().getLeftTexture(),
SkinManager.get().getTextBarSkin().getRightTexture(),
SkinManager.get().getTextBarSkin().getBodyTexture(), x, y,
textcolor, inp, limit);
}
public LTextField(String txt, LTexture left, LTexture right, LTexture body,
int x, int y, int type, int limit) {
this(txt, left, right, body, x, y, SkinManager.get().getTextBarSkin()
.getFontColor(), type, limit);
}
public LTextField(String txt, int x, int y, int type, int limit) {
this(txt, x, y, SkinManager.get().getTextBarSkin().getFontColor(),
type, limit);
}
public LTextField(String txt, int x, int y, int limit) {
this(txt, x, y, SkinManager.get().getTextBarSkin().getFontColor(),
INPUT_STRING, limit);
}
public LTextField(String txt, int x, int y) {
this(txt, x, y, SkinManager.get().getTextBarSkin().getFontColor(),
INPUT_STRING, 128);
}
public int getInputType() {
return INPUT_TYPE;
}
public LTextField setInputType(int type) {
INPUT_TYPE = type;
return this;
}
public String getInput() {
String result = _text.substring(startidx);
if ((result.endsWith("-") || result.length() == 0)
&& INPUT_TYPE != INPUT_STRING) {
return "0";
}
return result;
}
public boolean wasEntered() {
return this.input.getKeyPressed() == SysKey.ENTER
|| !this.isFocusable();
}
@Override
protected void keyPressed(GameKey key) {
if (!isFocusable()) {
return;
}
char nextchar = key.getKeyChar();
if (nextchar == 0
&& (StringUtils.isChinese(nextchar) || StringUtils
.isAlphabetNumeric(String.valueOf(nextchar)))) {
return;
}
boolean isatstart = _text.length() == startidx;
if (nextchar == '\b' && _text.length() != 0 && !isatstart) {
_text = _text.substring(0, _text.length() - 1);
return;
}
if (_text.length() == limit) {
return;
}
boolean valid = true;
if (INPUT_TYPE != INPUT_STRING) {
switch (INPUT_TYPE) {
case INPUT_UNSIGNED_INTEGER_NUM:
valid = Character.isDigit(nextchar);
break;
case INPUT_SIGNED_INTEGER_NUM:
valid = Character.isDigit(nextchar) || nextchar == '-'
&& isatstart;
break;
case INPUT_UNSIGNED_FLOATING_POINT_NUM:
valid = Character.isDigit(nextchar) || nextchar == '.';
break;
case INPUT_SIGNED_FLOATING_POINT_NUM:
valid = Character.isDigit(nextchar) || nextchar == '.'
|| nextchar == '-' && isatstart;
break;
}
}
if (valid && SysKey.getKeyCode() != SysKey.BACK
&& SysKey.getKeyCode() != SysKey.BACKSPACE) {
if (SysKey.getKeyCode() == SysKey.ENTER) {
_text += LSystem.LS;
} else {
_text += nextchar;
}
}
}
@Override
public void processTouchReleased() {
super.processTouchReleased();
getOnscreenKeyboard().show(true);
}
@Override
public void createUI(GLEx g, int x, int y, LComponent component,
LTexture[] buttonImage) {
addCursor();
super.createUI(g, x, y, component, buttonImage);
removeCursor();
}
public void setCursor(String cursor) {
this.cursor = cursor;
}
protected void addCursor() {
if (!isFocusable()) {
return;
}
_text += cursor;
setText(_text);
}
protected void removeCursor() {
if (!isFocusable()) {
return;
}
if (_text.endsWith(cursor)) {
_text = _text.substring(0,
MathUtils.max(startidx, _text.length() - cursor.length()));
}
}
public void setLimit(int l) {
this.limit = l;
}
public int getLimit() {
return this.limit;
}
}