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High quality UI controls and other tools to complement the core JavaFX distribution
/**
* Copyright (c) 2014, ControlsFX
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of ControlsFX, any associated website, nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL CONTROLSFX BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.controlsfx.control;
import impl.org.controlsfx.skin.PlusMinusSliderSkin;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.ObjectPropertyBase;
import javafx.beans.property.ReadOnlyDoubleProperty;
import javafx.beans.property.ReadOnlyDoubleWrapper;
import javafx.collections.MapChangeListener;
import javafx.css.CssMetaData;
import javafx.css.PseudoClass;
import javafx.css.Styleable;
import javafx.css.StyleableObjectProperty;
import javafx.css.StyleableProperty;
import javafx.event.EventHandler;
import javafx.event.EventTarget;
import javafx.event.EventType;
import javafx.geometry.Orientation;
import javafx.scene.control.Control;
import javafx.scene.control.Skin;
import javafx.scene.input.InputEvent;
import com.sun.javafx.css.converters.EnumConverter;
/**
* A plus minus slider allows the user to continously fire an event carrying a
* value between -1 and +1 by moving a thumb from its center position to the
* left or right (or top and bottom) edge of the control. The thumb will
* automatically center itself again on the zero position when the user lets go
* of the mouse button. Scrolling through a large list of items at different
* speeds is one possible use case for a control like this.
*
* 
*/
public class PlusMinusSlider extends ControlsFXControl {
private static final String DEFAULT_STYLE_CLASS = "plus-minus-slider"; //$NON-NLS-1$
private static final PseudoClass VERTICAL_PSEUDOCLASS_STATE = PseudoClass
.getPseudoClass("vertical"); //$NON-NLS-1$
private static final PseudoClass HORIZONTAL_PSEUDOCLASS_STATE = PseudoClass
.getPseudoClass("horizontal"); //$NON-NLS-1$
/**
* Constructs a new adjuster control with a default horizontal orientation.
*/
public PlusMinusSlider() {
getStyleClass().add(DEFAULT_STYLE_CLASS);
setOrientation(Orientation.HORIZONTAL);
/*
* We are "abusing" the properties map to pass the new value of the
* slider from the skin to the control. It has to be done this way
* because the value property of this control is "read-only".
*/
getProperties().addListener(new MapChangeListener() {
public void onChanged(
MapChangeListener.Change change) {
if (change.getKey().equals("plusminusslidervalue")) { //$NON-NLS-1$
if (change.getValueAdded() != null) {
Double valueAdded = (Double) change.getValueAdded();
value.set(valueAdded);
change.getMap().remove("plusminusslidervalue"); //$NON-NLS-1$
}
}
};
});
}
@Override
protected String getUserAgentStylesheet() {
return PlusMinusSlider.class.getResource("plusminusslider.css") //$NON-NLS-1$
.toExternalForm();
}
@Override
protected Skin createDefaultSkin() {
return new PlusMinusSliderSkin(this);
}
private ReadOnlyDoubleWrapper value = new ReadOnlyDoubleWrapper(this,
"value", 0); //$NON-NLS-1$
/**
* Returns the value property of the adjuster. The value is always between
* -1 and +1.
*
* @return the value of the adjuster
*/
public final ReadOnlyDoubleProperty valueProperty() {
return value.getReadOnlyProperty();
}
/**
* Returns the value of the value property.
*
* @return the value of the adjuster [-1, +1]
*
* @see #valueProperty()
*/
public final double getValue() {
return valueProperty().get();
}
// orientation
private ObjectProperty orientation;
/**
* Sets the value of the orientation property.
*
* @param value
* the new orientation (horizontal, vertical).
* @see #orientationProperty()
*/
public final void setOrientation(Orientation value) {
orientationProperty().set(value);
}
/**
* Returns the value of the orientation property.
*
* @return the current orientation of the control
* @see #orientationProperty()
*/
public final Orientation getOrientation() {
return orientation == null ? Orientation.HORIZONTAL : orientation.get();
}
/**
* Returns the stylable object property used for storing the orientation of
* the adjuster control. The CSS property "-fx-orientation" can be used to
* initialize this value.
*
* @return the orientation property
*/
public final ObjectProperty orientationProperty() {
if (orientation == null) {
orientation = new StyleableObjectProperty(null) {
@Override
protected void invalidated() {
final boolean vertical = (get() == Orientation.VERTICAL);
pseudoClassStateChanged(VERTICAL_PSEUDOCLASS_STATE,
vertical);
pseudoClassStateChanged(HORIZONTAL_PSEUDOCLASS_STATE,
!vertical);
}
@Override
public CssMetaData getCssMetaData() {
return StyleableProperties.ORIENTATION;
}
@Override
public Object getBean() {
return PlusMinusSlider.this;
}
@Override
public String getName() {
return "orientation"; //$NON-NLS-1$
}
};
}
return orientation;
}
// event support
/**
* Stores the event handler that will be informed when the adjuster's value
* changes.
*
* @return the value change event handler property
*/
public final ObjectProperty> onValueChangedProperty() {
return onValueChanged;
}
/**
* Sets an event handler that will receive plus minus events when the user
* moves the adjuster's thumb.
*
* @param value
* the event handler
*
* @see #onValueChangedProperty()
*/
public final void setOnValueChanged(EventHandler value) {
onValueChangedProperty().set(value);
}
/**
* Returns the event handler that will be notified when the adjuster's value
* changes.
*
* @return An EventHandler.
*/
public final EventHandler getOnValueChanged() {
return onValueChangedProperty().get();
}
private ObjectProperty> onValueChanged = new ObjectPropertyBase>() {
@Override
protected void invalidated() {
setEventHandler(PlusMinusEvent.VALUE_CHANGED, get());
}
@Override
public Object getBean() {
return PlusMinusSlider.this;
}
@Override
public String getName() {
return "onValueChanged"; //$NON-NLS-1$
}
};
private static class StyleableProperties {
private static final CssMetaData ORIENTATION = new CssMetaData(
"-fx-orientation", new EnumConverter( //$NON-NLS-1$
Orientation.class), Orientation.VERTICAL) {
@Override
public Orientation getInitialValue(PlusMinusSlider node) {
// A vertical Slider should remain vertical
return node.getOrientation();
}
@Override
public boolean isSettable(PlusMinusSlider n) {
return n.orientation == null || !n.orientation.isBound();
}
@SuppressWarnings("unchecked")
@Override
public StyleableProperty getStyleableProperty(
PlusMinusSlider n) {
return (StyleableProperty) n.orientationProperty();
}
};
private static final List> STYLEABLES;
static {
final List> styleables = new ArrayList>(
Control.getClassCssMetaData());
styleables.add(ORIENTATION);
STYLEABLES = Collections.unmodifiableList(styleables);
}
}
/**
* @return The CssMetaData associated with this class, which may include the
* CssMetaData of its super classes.
* @since JavaFX 8.0
*/
public static List> getClassCssMetaData() {
return StyleableProperties.STYLEABLES;
}
/**
* An event class used by the {@link PlusMinusSlider} to inform event
* handlers about changes.
*/
public static class PlusMinusEvent extends InputEvent {
private static final long serialVersionUID = 2881004583512990781L;
public static final EventType ANY = new EventType<>(
InputEvent.ANY, "ANY"); //$NON-NLS-1$
/**
* An event type used when the value property (
* {@link PlusMinusSlider#valueProperty()}) changes.
*/
public static final EventType VALUE_CHANGED = new EventType<>(
PlusMinusEvent.ANY, "VALUE_CHANGED"); //$NON-NLS-1$
private double value;
/**
* Constructs a new event object.
*
* @param source
* the source of the event (always the
* {@link PlusMinusSlider})
* @param target
* the target of the event (always the
* {@link PlusMinusSlider})
* @param eventType
* the type of the event (e.g. {@link #VALUE_CHANGED})
* @param value
* the actual current value of the adjuster
*/
public PlusMinusEvent(Object source, EventTarget target,
EventType eventType, double value) {
super(source, target, eventType);
this.value = value;
}
/**
* The value of the {@link PlusMinusSlider}.
*
* @return the value
*/
public double getValue() {
return value;
}
}
}
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