com.sun.javafx.scene.control.skin.IntegerFieldSkin Maven / Gradle / Ivy
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package com.sun.javafx.scene.control.skin;
import com.sun.javafx.scene.control.IntegerField;
import javafx.application.Platform;
import javafx.beans.InvalidationListener;
import javafx.scene.Node;
/**
*/
public class IntegerFieldSkin extends InputFieldSkin {
private InvalidationListener integerFieldValueListener;
/**
* Create a new IntegerFieldSkin.
* @param control The IntegerField
*/
public IntegerFieldSkin(final IntegerField control) {
super(control);
// Whenever the value changes on the control, we need to update the text
// in the TextField. The only time this is not the case is when the update
// to the control happened as a result of an update in the text textField.
control.valueProperty().addListener(integerFieldValueListener = observable -> {
updateText();
});
}
@Override public IntegerField getSkinnable() {
return (IntegerField) control;
}
@Override public Node getNode() {
return getTextField();
}
/**
* Called by a Skinnable when the Skin is replaced on the Skinnable. This method
* allows a Skin to implement any logic necessary to clean up itself after
* the Skin is no longer needed. It may be used to release native resources.
* The methods {@link #getSkinnable()} and {@link #getNode()}
* should return null following a call to dispose. Calling dispose twice
* has no effect.
*/
@Override
public void dispose() {
((IntegerField) control).valueProperty().removeListener(integerFieldValueListener);
super.dispose();
}
@Override protected boolean accept(String text) {
if (text.length() == 0) return true;
if (text.matches("[0-9]*")) {
try {
Integer.parseInt(text);
int value = Integer.parseInt(text);
int maxValue = ((IntegerField) control).getMaxValue();
return (maxValue != -1) ? (value <= maxValue ) : true;
} catch (NumberFormatException ex) { }
}
return false;
}
@Override protected void updateText() {
getTextField().setText("" + ((IntegerField) control).getValue());
}
@Override protected void updateValue() {
int value = ((IntegerField) control).getValue();
int newValue;
String text = getTextField().getText() == null ? "" : getTextField().getText().trim();
try {
newValue = Integer.parseInt(text);
if (newValue != value) {
((IntegerField) control).setValue(newValue);
}
} catch (NumberFormatException ex) {
// Empty string most likely
((IntegerField) control).setValue(0);
Platform.runLater(() -> {
getTextField().positionCaret(1);
});
}
}
}