//
// Triple Play - utilities for use in PlayN-based games
// Copyright (c) 2011-2014, Three Rings Design, Inc. - All rights reserved.
// http://github.com/threerings/tripleplay/blob/master/LICENSE
package tripleplay.platform;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Text;
import playn.core.Font;
import react.Connection;
import react.Slot;
import tripleplay.ui.Field;
import tripleplay.ui.Style;
public class SWTNativeTextField extends SWTNativeOverlay
implements NativeTextField
{
public SWTNativeTextField (Field.Native element) {
_element = element;
_textConnection = _element.field().text.connectNotify(new Slot<String>() {
@Override public void onEmit (final String value) {
if (_textCtrl == null) return;
if (_textCtrl.getText().equals(value)) return;
_textNotifyInProgress = true;
try {
_textCtrl.setText(value);
} finally {
_textNotifyInProgress = false;
}
}
});
}
@Override protected Control createControl (Composite parent) {
// TODO: transparent background. these style flags don't work
return new Text(parent, resolveStyle() | SWT.NO_BACKGROUND | SWT.TRANSPARENT);
}
@Override protected void didCreate () {
// get our casted member
_textCtrl = (Text)ctrl;
// copy in the tp field text
_textCtrl.setText(_element.field().text.get());
// listen for changes and propagate back to field
_textCtrl.addModifyListener(new ModifyListener() {
@Override public void modifyText (ModifyEvent e) {
if (!_textNotifyInProgress) _element.field().text.update(_textCtrl.getText());
}
});
_textCtrl.addSelectionListener(new SelectionListener() {
@Override public void widgetDefaultSelected (SelectionEvent ev) {
_element.finishedEditing().emit(true);
}
@Override public void widgetSelected (SelectionEvent ev) {}
});
// listen for focus changes and dispatch via the platform
_textCtrl.addFocusListener(new FocusListener() {
@Override public void focusLost (FocusEvent e) {
SWTTPPlatform.instance().onFocusChange();
}
@Override public void focusGained (FocusEvent e) {
SWTTPPlatform.instance().onFocusChange();
}
});
refresh();
}
@Override protected void willDispose () {
if (_font != null) _textCtrl.getFont().dispose();
if (_color != null) _textCtrl.getForeground().dispose();
_font = null;
_color = null;
_textCtrl = null;
}
@Override public void setEnabled (boolean enabled) {
_enabled = enabled;
if (_textCtrl != null) _textCtrl.setEnabled(enabled);
}
public Field field () {
return _element.field();
}
public void refresh () {
if (ctrl == null) return;
// check the desired style against the existing ones; the mask is needed to filter
// SWT's other internal styles
int style = resolveStyle();
if (style != (_textCtrl.getStyle() & REALLOC_STYLES)) {
// we need a new instance, just remove and add (this is recursive but next time, the
// else branch will be taken)
remove();
add();
return;
}
// TODO _textComp.setBorder(null);
// TODO _textComp.setAutoscrolls(true);
_textCtrl.setEnabled(_enabled);
// set font (only if changed, otherwise it makes the caret disappear)
Font nfont = _element.resolveStyle(Style.FONT);
if (_font == null || !_font.equals(nfont)) {
// we need to dispose of the previous font, if we set it
if (_font != null) _textCtrl.getFont().dispose();
_textCtrl.setFont(convert().font(_font = nfont));
}
// set foreground
int ncolor = _element.resolveStyle(Style.COLOR);
if (_color == null || _color != ncolor) {
// we need to dispose of the previous color, if we set it
if (_color != null) _textCtrl.getForeground().dispose();
_textCtrl.setForeground(convert().color(_color = ncolor));
}
// TODO: Keyboard.TextType textType = resolveStyle(Field.TEXT_TYPE);
updateBounds();
}
@Override public void focus () {
if (_textCtrl != null) _textCtrl.setFocus();
}
@Override public boolean insert (String text) {
if (_textCtrl == null) return false;
_textCtrl.insert(text);
return true;
}
@Override protected void refreshBounds () {
_element.refreshBounds();
}
protected int resolveStyle () {
int style = (_element.resolveStyle(Field.MULTILINE) ? SWT.MULTI : SWT.SINGLE) |
(_element.resolveStyle(Field.SECURE_TEXT_ENTRY) ? SWT.PASSWORD : 0) |
(_element.resolveStyle(Style.TEXT_WRAP) ? SWT.WRAP : 0);
switch (_element.resolveStyle(Style.HALIGN)) {
case CENTER: style |= SWT.CENTER; break;
case LEFT: style |= SWT.LEFT; break;
case RIGHT: style |= SWT.RIGHT; break;
}
return style;
}
protected final Field.Native _element;
protected Text _textCtrl;
protected boolean _enabled = true;
protected Font _font;
protected Integer _color;
protected Connection _textConnection;
protected volatile boolean _textNotifyInProgress;
/** Styles that force reallocation of the text control if changed. */
protected static int REALLOC_STYLES = SWT.MULTI | SWT.SINGLE | SWT.PASSWORD |
SWT.CENTER | SWT.LEFT | SWT.RIGHT | SWT.WRAP;
}