/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* 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.
******************************************************************************/
package com.badlogic.gdx.scenes.scene2d.ui;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.Input.Keys;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.g2d.Batch;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.Group;
import com.badlogic.gdx.scenes.scene2d.InputEvent;
import com.badlogic.gdx.scenes.scene2d.InputListener;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.utils.ClickListener;
import com.badlogic.gdx.scenes.scene2d.utils.Disableable;
import com.badlogic.gdx.scenes.scene2d.utils.Drawable;
import com.badlogic.gdx.scenes.scene2d.utils.UIUtils;
import com.badlogic.gdx.utils.Array;
import com.badlogic.gdx.utils.Clipboard;
import com.badlogic.gdx.utils.FloatArray;
import com.badlogic.gdx.utils.TimeUtils;
import com.badlogic.gdx.utils.Timer;
import com.badlogic.gdx.utils.Timer.Task;
/** A single-line text input field.
* <p>
* The preferred height of a text field is the height of the {@link TextFieldStyle#font} and {@link TextFieldStyle#background}.
* The preferred width of a text field is 150, a relatively arbitrary size.
* <p>
* The text field will copy the currently selected text when ctrl+c is pressed, and paste any text in the clipboard when ctrl+v is
* pressed. Clipboard functionality is provided via the {@link Clipboard} interface. Currently there are two standard
* implementations, one for the desktop and one for Android. The Android clipboard is a stub, as copy & pasting on Android is not
* supported yet.
* <p>
* The text field allows you to specify an {@link OnscreenKeyboard} for displaying a softkeyboard and piping all key events
* generated by the keyboard to the text field. There are two standard implementations, one for the desktop and one for Android.
* The desktop keyboard is a stub, as a softkeyboard is not needed on the desktop. The Android {@link OnscreenKeyboard}
* implementation will bring up the default IME.
* @author mzechner
* @author Nathan Sweet */
public class TextField extends Widget implements Disableable {
static private final char BACKSPACE = 8;
static protected final char ENTER_DESKTOP = '\r';
static protected final char ENTER_ANDROID = '\n';
static private final char TAB = '\t';
static private final char DELETE = 127;
static private final char BULLET = 149;
static private final Vector2 tmp1 = new Vector2();
static private final Vector2 tmp2 = new Vector2();
static private final Vector2 tmp3 = new Vector2();
protected String text;
protected int cursor, selectionStart;
protected boolean hasSelection;
protected boolean writeEnters;
protected final FloatArray glyphAdvances = new FloatArray(), glyphPositions = new FloatArray();
TextFieldStyle style;
private String messageText;
protected CharSequence displayText;
private Clipboard clipboard;
InputListener inputListener;
TextFieldListener listener;
TextFieldFilter filter;
OnscreenKeyboard keyboard = new DefaultOnscreenKeyboard();
boolean focusTraversal = true, onlyFontChars = true, disabled, rightAligned;
private float selectionX, selectionWidth;
boolean passwordMode;
private StringBuilder passwordBuffer;
private char passwordCharacter = BULLET;
protected float textHeight, textOffset;
float renderOffset;
private int visibleTextStart, visibleTextEnd;
private int maxLength = 0;
private float blinkTime = 0.32f;
boolean cursorOn = true;
long lastBlink;
KeyRepeatTask keyRepeatTask = new KeyRepeatTask();
float keyRepeatInitialTime = 0.4f;
float keyRepeatTime = 0.1f;
public TextField (String text, Skin skin) {
this(text, skin.get(TextFieldStyle.class));
}
public TextField (String text, Skin skin, String styleName) {
this(text, skin.get(styleName, TextFieldStyle.class));
}
public TextField (String text, TextFieldStyle style) {
setStyle(style);
clipboard = Gdx.app.getClipboard();
initialize();
setText(text);
setSize(getPrefWidth(), getPrefHeight());
}
protected void initialize () {
writeEnters = false;
addListener(inputListener = createInputListener());
}
protected InputListener createInputListener () {
return new TextFieldClickListener();
}
protected int letterUnderCursor (float x) {
x -= renderOffset + textOffset;
int index = glyphPositions.size - 1;
float[] glyphPositions = this.glyphPositions.items;
for (int i = 0, n = this.glyphPositions.size; i < n; i++) {
if (glyphPositions[i] > x) {
index = i - 1;
break;
}
}
return Math.max(0, index);
}
protected boolean isWordCharacter (char c) {
return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9');
}
protected int[] wordUnderCursor (int at) {
String text = this.text;
int start = at, right = text.length(), left = 0, index = start;
for (; index < right; index++) {
if (!isWordCharacter(text.charAt(index))) {
right = index;
break;
}
}
for (index = start - 1; index > -1; index--) {
if (!isWordCharacter(text.charAt(index))) {
left = index + 1;
break;
}
}
return new int[] {left, right};
}
int[] wordUnderCursor (float x) {
return wordUnderCursor(letterUnderCursor(x));
}
boolean withinMaxLength (int size) {
return maxLength <= 0 || size < maxLength;
}
public void setMaxLength (int maxLength) {
this.maxLength = maxLength;
}
public int getMaxLength () {
return this.maxLength;
}
/** When false, text set by {@link #setText(String)} may contain characters not in the font, a space will be displayed instead.
* When true (the default), characters not in the font are stripped by setText. Characters not in the font are always stripped
* when typed or pasted. */
public void setOnlyFontChars (boolean onlyFontChars) {
this.onlyFontChars = onlyFontChars;
}
public void setStyle (TextFieldStyle style) {
if (style == null) throw new IllegalArgumentException("style cannot be null.");
this.style = style;
textHeight = style.font.getCapHeight() - style.font.getDescent() * 2;
invalidateHierarchy();
}
/** Returns the text field's style. Modifying the returned style may not have an effect until {@link #setStyle(TextFieldStyle)}
* is called. */
public TextFieldStyle getStyle () {
return style;
}
protected void calculateOffsets () {
float visibleWidth = getWidth();
if (style.background != null) visibleWidth -= style.background.getLeftWidth() + style.background.getRightWidth();
// Check if the cursor has gone out the left or right side of the visible area and adjust renderoffset.
float position = glyphPositions.get(cursor);
float distance = position - Math.abs(renderOffset);
if (distance <= 0) {
if (cursor > 0)
renderOffset = -glyphPositions.get(cursor - 1);
else
renderOffset = 0;
} else if (distance > visibleWidth) {
renderOffset -= distance - visibleWidth;
}
// calculate first visible char based on render offset
visibleTextStart = 0;
textOffset = 0;
float start = Math.abs(renderOffset);
int glyphCount = glyphPositions.size;
float[] glyphPositions = this.glyphPositions.items;
float startPos = 0;
for (int i = 0; i < glyphCount; i++) {
if (glyphPositions[i] >= start) {
visibleTextStart = i;
startPos = glyphPositions[i];
textOffset = startPos - start;
break;
}
}
// calculate last visible char based on visible width and render offset
visibleTextEnd = Math.min(displayText.length(), cursor + 1);
for (; visibleTextEnd <= displayText.length(); visibleTextEnd++) {
if (glyphPositions[visibleTextEnd] - startPos > visibleWidth) break;
}
visibleTextEnd = Math.max(0, visibleTextEnd - 1);
// calculate selection x position and width
if (hasSelection) {
int minIndex = Math.min(cursor, selectionStart);
int maxIndex = Math.max(cursor, selectionStart);
float minX = Math.max(glyphPositions[minIndex], startPos);
float maxX = Math.min(glyphPositions[maxIndex], glyphPositions[visibleTextEnd]);
selectionX = minX;
selectionWidth = maxX - minX;
}
if (rightAligned) {
textOffset = visibleWidth - (glyphPositions[visibleTextEnd] - startPos);
if (hasSelection) selectionX += textOffset;
}
}
@Override
public void draw (Batch batch, float parentAlpha) {
Stage stage = getStage();
boolean focused = stage != null && stage.getKeyboardFocus() == this;
final BitmapFont font = style.font;
final Color fontColor = (disabled && style.disabledFontColor != null) ? style.disabledFontColor
: ((focused && style.focusedFontColor != null) ? style.focusedFontColor : style.fontColor);
final Drawable selection = style.selection;
final Drawable cursorPatch = style.cursor;
final Drawable background = (disabled && style.disabledBackground != null) ? style.disabledBackground
: ((focused && style.focusedBackground != null) ? style.focusedBackground : style.background);
Color color = getColor();
float x = getX();
float y = getY();
float width = getWidth();
float height = getHeight();
batch.setColor(color.r, color.g, color.b, color.a * parentAlpha);
float bgLeftWidth = 0;
if (background != null) {
background.draw(batch, x, y, width, height);
bgLeftWidth = background.getLeftWidth();
}
float textY = getTextY(font, background);
calculateOffsets();
if (focused && hasSelection && selection != null) {
drawSelection(selection, batch, font, x + bgLeftWidth, y + textY);
}
float yOffset = font.isFlipped() ? -textHeight : 0;
if (displayText.length() == 0) {
if (!focused && messageText != null) {
if (style.messageFontColor != null) {
font.setColor(style.messageFontColor.r, style.messageFontColor.g, style.messageFontColor.b,
style.messageFontColor.a * parentAlpha);
} else
font.setColor(0.7f, 0.7f, 0.7f, parentAlpha);
BitmapFont messageFont = style.messageFont != null ? style.messageFont : font;
messageFont.draw(batch, messageText, x + bgLeftWidth, y + textY + yOffset);
}
} else {
font.setColor(fontColor.r, fontColor.g, fontColor.b, fontColor.a * parentAlpha);
drawText(batch, font, x + bgLeftWidth, y + textY + yOffset);
}
if (focused && !disabled) {
blink();
if (cursorOn && cursorPatch != null) {
drawCursor(cursorPatch, batch, font, x + bgLeftWidth, y + textY);
}
}
}
protected float getTextY (BitmapFont font, Drawable background) {
float height = getHeight();
float textY = textHeight / 2 + font.getDescent();
if (background != null) {
float bottom = background.getBottomHeight();
textY = (int)(textY + (height - background.getTopHeight() - bottom) / 2 + bottom);
} else {
textY = (int)(textY + height / 2);
}
return textY;
}
/** Draws selection rectangle **/
protected void drawSelection (Drawable selection, Batch batch, BitmapFont font, float x, float y) {
selection.draw(batch, x + selectionX + renderOffset, y - textHeight - font.getDescent(), selectionWidth,
textHeight + font.getDescent() / 2);
}
protected void drawText (Batch batch, BitmapFont font, float x, float y) {
font.draw(batch, displayText, x + textOffset, y, visibleTextStart, visibleTextEnd);
}
protected void drawCursor (Drawable cursorPatch, Batch batch, BitmapFont font, float x, float y) {
cursorPatch.draw(batch, x + textOffset + glyphPositions.get(cursor) - glyphPositions.items[visibleTextStart] - 1, y
- textHeight - font.getDescent(), cursorPatch.getMinWidth(), textHeight + font.getDescent() / 2);
}
void updateDisplayText () {
BitmapFont font = style.font;
String text = this.text;
int textLength = text.length();
StringBuilder buffer = new StringBuilder();
for (int i = 0; i < textLength; i++) {
char c = text.charAt(i);
buffer.append(font.containsCharacter(c) ? c : ' ');
}
String newDisplayText = buffer.toString();
if (passwordMode && font.containsCharacter(passwordCharacter)) {
if (passwordBuffer == null) passwordBuffer = new StringBuilder(newDisplayText.length());
if (passwordBuffer.length() > textLength) //
passwordBuffer.setLength(textLength);
else {
for (int i = passwordBuffer.length(); i < textLength; i++)
passwordBuffer.append(passwordCharacter);
}
displayText = passwordBuffer;
} else
displayText = newDisplayText;
font.computeGlyphAdvancesAndPositions(displayText, glyphAdvances, glyphPositions);
if (selectionStart > newDisplayText.length()) selectionStart = textLength;
}
private void blink () {
long time = TimeUtils.nanoTime();
if ((time - lastBlink) / 1000000000.0f > blinkTime) {
cursorOn = !cursorOn;
lastBlink = time;
}
}
/** Copies the contents of this TextField to the {@link Clipboard} implementation set on this TextField. */
public void copy () {
if (hasSelection && !passwordMode) {
clipboard.setContents(text.substring(Math.min(cursor, selectionStart), Math.max(cursor, selectionStart)));
}
}
/** Copies the selected contents of this TextField to the {@link Clipboard} implementation set on this TextField, then removes
* it. */
public void cut () {
if (hasSelection && !passwordMode) {
copy();
cursor = delete();
}
}
/** Pastes the content of the {@link Clipboard} implementation set on this Textfield to this TextField. */
void paste () {
paste(clipboard.getContents(), true);
}
void paste (String content, boolean onlyFontChars) {
if (content == null) return;
StringBuilder buffer = new StringBuilder();
int textLength = text.length();
for (int i = 0, n = content.length(); i < n; i++) {
if (!withinMaxLength(textLength + buffer.length())) break;
char c = content.charAt(i);
if (!(writeEnters && (c == ENTER_ANDROID || c == ENTER_DESKTOP))) {
if (onlyFontChars && !style.font.containsCharacter(c)) continue;
if (filter != null && !filter.acceptChar(this, c)) continue;
}
buffer.append(c);
}
content = buffer.toString();
if (hasSelection) cursor = delete(false);
text = insert(cursor, content, text);
updateDisplayText();
cursor += content.length();
}
String insert (int position, CharSequence text, String to) {
if (to.length() == 0) return text.toString();
return to.substring(0, position) + text + to.substring(position, to.length());
}
int delete () {
return delete(true);
}
int delete (boolean updateText) {
return delete(selectionStart, cursor, updateText);
}
int delete (int from, int to, boolean updateText) {
int minIndex = Math.min(from, to);
int maxIndex = Math.max(from, to);
text = (minIndex > 0 ? text.substring(0, minIndex) : "")
+ (maxIndex < text.length() ? text.substring(maxIndex, text.length()) : "");
if (updateText) updateDisplayText();
clearSelection();
return minIndex;
}
/** Focuses the next TextField. If none is found, the keyboard is hidden. Does nothing if the text field is not in a stage.
* @param up If true, the TextField with the same or next smallest y coordinate is found, else the next highest. */
public void next (boolean up) {
Stage stage = getStage();
if (stage == null) return;
getParent().localToStageCoordinates(tmp1.set(getX(), getY()));
TextField textField = findNextTextField(stage.getActors(), null, tmp2, tmp1, up);
if (textField == null) { // Try to wrap around.
if (up)
tmp1.set(Float.MIN_VALUE, Float.MIN_VALUE);
else
tmp1.set(Float.MAX_VALUE, Float.MAX_VALUE);
textField = findNextTextField(getStage().getActors(), null, tmp2, tmp1, up);
}
if (textField != null)
stage.setKeyboardFocus(textField);
else
Gdx.input.setOnscreenKeyboardVisible(false);
}
private TextField findNextTextField (Array<Actor> actors, TextField best, Vector2 bestCoords, Vector2 currentCoords, boolean up) {
for (int i = 0, n = actors.size; i < n; i++) {
Actor actor = actors.get(i);
if (actor == this) continue;
if (actor instanceof TextField) {
TextField textField = (TextField)actor;
if (textField.isDisabled() || !textField.focusTraversal) continue;
Vector2 actorCoords = actor.getParent().localToStageCoordinates(tmp3.set(actor.getX(), actor.getY()));
if ((actorCoords.y < currentCoords.y || (actorCoords.y == currentCoords.y && actorCoords.x > currentCoords.x)) ^ up) {
if (best == null
|| (actorCoords.y > bestCoords.y || (actorCoords.y == bestCoords.y && actorCoords.x < bestCoords.x)) ^ up) {
best = (TextField)actor;
bestCoords.set(actorCoords);
}
}
} else if (actor instanceof Group)
best = findNextTextField(((Group)actor).getChildren(), best, bestCoords, currentCoords, up);
}
return best;
}
public InputListener getDefaultInputListener () {
return inputListener;
}
/** @param listener May be null. */
public void setTextFieldListener (TextFieldListener listener) {
this.listener = listener;
}
/** @param filter May be null. */
public void setTextFieldFilter (TextFieldFilter filter) {
this.filter = filter;
}
public TextFieldFilter getTextFieldFilter () {
return filter;
}
/** If true (the default), tab/shift+tab will move to the next text field. */
public void setFocusTraversal (boolean focusTraversal) {
this.focusTraversal = focusTraversal;
}
/** @return May be null. */
public String getMessageText () {
return messageText;
}
/** Sets the text that will be drawn in the text field if no text has been entered.
* @param messageText may be null. */
public void setMessageText (String messageText) {
this.messageText = messageText;
}
public void setText (String str) {
if (str == null) throw new IllegalArgumentException("text cannot be null.");
if (str.equals(text)) return;
clearSelection();
text = "";
paste(str, onlyFontChars);
cursor = 0;
}
/** @return Never null, might be an empty string. */
public String getText () {
return text;
}
public int getSelectionStart () {
return selectionStart;
}
public String getSelection () {
return hasSelection ? text.substring(Math.min(selectionStart, cursor), Math.max(selectionStart, cursor)) : "";
}
/** Sets the selected text. */
public void setSelection (int selectionStart, int selectionEnd) {
if (selectionStart < 0) throw new IllegalArgumentException("selectionStart must be >= 0");
if (selectionEnd < 0) throw new IllegalArgumentException("selectionEnd must be >= 0");
selectionStart = Math.min(text.length(), selectionStart);
selectionEnd = Math.min(text.length(), selectionEnd);
if (selectionEnd == selectionStart) {
clearSelection();
return;
}
if (selectionEnd < selectionStart) {
int temp = selectionEnd;
selectionEnd = selectionStart;
selectionStart = temp;
}
hasSelection = true;
this.selectionStart = selectionStart;
cursor = selectionEnd;
}
public void selectAll () {
setSelection(0, text.length());
}
public void clearSelection () {
hasSelection = false;
}
/** Sets the cursor position and clears any selection. */
public void setCursorPosition (int cursorPosition) {
if (cursorPosition < 0) throw new IllegalArgumentException("cursorPosition must be >= 0");
clearSelection();
cursor = Math.min(cursorPosition, text.length());
}
public int getCursorPosition () {
return cursor;
}
/** Default is an instance of {@link DefaultOnscreenKeyboard}. */
public OnscreenKeyboard getOnscreenKeyboard () {
return keyboard;
}
public void setOnscreenKeyboard (OnscreenKeyboard keyboard) {
this.keyboard = keyboard;
}
public void setClipboard (Clipboard clipboard) {
this.clipboard = clipboard;
}
public float getPrefWidth () {
return 150;
}
public float getPrefHeight () {
float prefHeight = textHeight;
if (style.background != null) {
prefHeight = Math.max(prefHeight + style.background.getBottomHeight() + style.background.getTopHeight(),
style.background.getMinHeight());
}
return prefHeight;
}
public void setRightAligned (boolean rightAligned) {
this.rightAligned = rightAligned;
}
/** If true, the text in this text field will be shown as bullet characters.
* @see #setPasswordCharacter(char) */
public void setPasswordMode (boolean passwordMode) {
this.passwordMode = passwordMode;
updateDisplayText();
}
public boolean isPasswordMode () {
return passwordMode;
}
/** Sets the password character for the text field. The character must be present in the {@link BitmapFont}. Default is 149
* (bullet). */
public void setPasswordCharacter (char passwordCharacter) {
this.passwordCharacter = passwordCharacter;
if (passwordMode) updateDisplayText();
}
public void setBlinkTime (float blinkTime) {
this.blinkTime = blinkTime;
}
public void setDisabled (boolean disabled) {
this.disabled = disabled;
}
public boolean isDisabled () {
return disabled;
}
protected void moveCursor (boolean forward, boolean jump) {
int limit = forward ? text.length() : 0;
int charOffset = forward ? 0 : -1;
while ((forward ? ++cursor < limit : --cursor > limit) && jump) {
if (!continueCursor(cursor, charOffset)) break;
}
}
protected boolean continueCursor (int index, int offset) {
char c = text.charAt(index + offset);
return isWordCharacter(c);
}
class KeyRepeatTask extends Task {
int keycode;
public void run () {
inputListener.keyDown(null, keycode);
}
}
/** Interface for listening to typed characters.
* @author mzechner */
static public interface TextFieldListener {
public void keyTyped (TextField textField, char c);
}
/** Interface for filtering characters entered into the text field.
* @author mzechner */
static public interface TextFieldFilter {
public boolean acceptChar (TextField textField, char c);
static public class DigitsOnlyFilter implements TextFieldFilter {
@Override
public boolean acceptChar (TextField textField, char c) {
return Character.isDigit(c);
}
}
}
/** An interface for onscreen keyboards. Can invoke the default keyboard or render your own keyboard!
* @author mzechner */
static public interface OnscreenKeyboard {
public void show (boolean visible);
}
/** The default {@link OnscreenKeyboard} used by all {@link TextField} instances. Just uses
* {@link Input#setOnscreenKeyboardVisible(boolean)} as appropriate. Might overlap your actual rendering, so use with care!
* @author mzechner */
static public class DefaultOnscreenKeyboard implements OnscreenKeyboard {
@Override
public void show (boolean visible) {
Gdx.input.setOnscreenKeyboardVisible(visible);
}
}
/** Basic input listener for the text field */
public class TextFieldClickListener extends ClickListener {
public void clicked (InputEvent event, float x, float y) {
int count = getTapCount() % 4;
if (count == 0) clearSelection();
if (count == 2) {
int[] array = wordUnderCursor(x);
setSelection(array[0], array[1]);
}
if (count == 3) selectAll();
}
public boolean touchDown (InputEvent event, float x, float y, int pointer, int button) {
if (!super.touchDown(event, x, y, pointer, button)) return false;
if (pointer == 0 && button != 0) return false;
if (disabled) return true;
setCursorPosition(x, y);
selectionStart = cursor;
Stage stage = getStage();
if (stage != null) stage.setKeyboardFocus(TextField.this);
keyboard.show(true);
hasSelection = true;
return true;
}
public void touchDragged (InputEvent event, float x, float y, int pointer) {
super.touchDragged(event, x, y, pointer);
setCursorPosition(x, y);
}
public void touchUp (InputEvent event, float x, float y, int pointer, int button) {
if (selectionStart == cursor) hasSelection = false;
super.touchUp(event, x, y, pointer, button);
}
protected void setCursorPosition (float x, float y) {
lastBlink = 0;
cursorOn = false;
cursor = letterUnderCursor(x);
}
protected void goHome (boolean jump) {
cursor = 0;
}
protected void goEnd (boolean jump) {
cursor = text.length();
}
public boolean keyDown (InputEvent event, int keycode) {
if (disabled) return false;
lastBlink = 0;
cursorOn = false;
Stage stage = getStage();
if (stage == null || stage.getKeyboardFocus() != TextField.this) return false;
boolean repeat = false;
boolean ctrl = UIUtils.ctrl();
boolean jump = ctrl && !passwordMode;
if (ctrl) {
if (keycode == Keys.V) {
paste();
return true;
}
if (keycode == Keys.C || keycode == Keys.INSERT) {
copy();
return true;
}
if (keycode == Keys.X || keycode == Keys.DEL) {
cut();
return true;
}
if (keycode == Keys.A) {
selectAll();
return true;
}
}
if (UIUtils.shift()) {
if (keycode == Keys.INSERT) paste();
if (keycode == Keys.FORWARD_DEL && hasSelection) {
copy();
delete(); // cut
}
selection:
{
int temp = cursor;
keys:
{
if (keycode == Keys.LEFT) {
moveCursor(false, jump);
repeat = true;
break keys;
}
if (keycode == Keys.RIGHT) {
moveCursor(true, jump);
repeat = true;
break keys;
}
if (keycode == Keys.HOME) {
goHome(jump);
break keys;
}
if (keycode == Keys.END) {
goEnd(jump);
break keys;
}
break selection;
}
if (!hasSelection) {
selectionStart = temp;
hasSelection = true;
}
}
} else {
// Cursor movement or other keys (kills selection).
if (keycode == Keys.LEFT) {
moveCursor(false, jump);
clearSelection();
repeat = true;
}
if (keycode == Keys.RIGHT) {
moveCursor(true, jump);
clearSelection();
repeat = true;
}
if (keycode == Keys.HOME) {
goHome(jump);
clearSelection();
}
if (keycode == Keys.END) {
goEnd(jump);
clearSelection();
}
}
cursor = MathUtils.clamp(cursor, 0, text.length());
if (repeat) {
scheduleKeyRepeatTask(keycode);
}
return true;
}
protected void scheduleKeyRepeatTask (int keycode) {
if (!keyRepeatTask.isScheduled() || keyRepeatTask.keycode != keycode) {
keyRepeatTask.keycode = keycode;
keyRepeatTask.cancel();
Timer.schedule(keyRepeatTask, keyRepeatInitialTime, keyRepeatTime);
}
}
public boolean keyUp (InputEvent event, int keycode) {
if (disabled) return false;
keyRepeatTask.cancel();
return true;
}
public boolean keyTyped (InputEvent event, char character) {
if (disabled) return false;
Stage stage = getStage();
if (stage == null || stage.getKeyboardFocus() != TextField.this) return false;
if ((character == TAB || character == ENTER_ANDROID) && focusTraversal) {
next(UIUtils.shift());
} else {
boolean delete = character == DELETE;
boolean backspace = character == BACKSPACE;
boolean add = style.font.containsCharacter(character)
|| (writeEnters && (character == ENTER_ANDROID || character == ENTER_DESKTOP));
boolean remove = backspace || delete;
if (add || remove) {
if (hasSelection)
cursor = delete(false);
else {
if (backspace && cursor > 0) {
text = text.substring(0, cursor - 1) + text.substring(cursor--);
renderOffset = 0;
}
if (delete && cursor < text.length()) {
text = text.substring(0, cursor) + text.substring(cursor + 1);
}
}
if (add && !remove) {
// Character may be added to the text.
boolean isEnter = character == ENTER_DESKTOP || character == ENTER_ANDROID;
if (!isEnter) {
if (filter != null && !filter.acceptChar(TextField.this, character)) return true;
}
if (!withinMaxLength(text.length())) return true;
String insertion = isEnter ? "\n" : String.valueOf(character);
text = insert(cursor++, insertion, text);
}
updateDisplayText();
}
}
if (listener != null) listener.keyTyped(TextField.this, character);
return true;
}
}
/** The style for a text field, see {@link TextField}.
* @author mzechner
* @author Nathan Sweet */
static public class TextFieldStyle {
public BitmapFont font;
public Color fontColor;
/** Optional. */
public Color focusedFontColor, disabledFontColor;
/** Optional. */
public Drawable background, focusedBackground, disabledBackground, cursor, selection;
/** Optional. */
public BitmapFont messageFont;
/** Optional. */
public Color messageFontColor;
public TextFieldStyle () {
}
public TextFieldStyle (BitmapFont font, Color fontColor, Drawable cursor, Drawable selection, Drawable background) {
this.background = background;
this.cursor = cursor;
this.font = font;
this.fontColor = fontColor;
this.selection = selection;
}
public TextFieldStyle (TextFieldStyle style) {
this.messageFont = style.messageFont;
if (style.messageFontColor != null) this.messageFontColor = new Color(style.messageFontColor);
this.background = style.background;
this.focusedBackground = style.focusedBackground;
this.disabledBackground = style.disabledBackground;
this.cursor = style.cursor;
this.font = style.font;
if (style.fontColor != null) this.fontColor = new Color(style.fontColor);
if (style.focusedFontColor != null) this.focusedFontColor = new Color(style.focusedFontColor);
if (style.disabledFontColor != null) this.disabledFontColor = new Color(style.disabledFontColor);
this.selection = style.selection;
}
}
}