org.jpedal.objects.acroforms.actions.JavaFX.JavaFXControlListener Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of OpenViewerFX Show documentation
Show all versions of OpenViewerFX Show documentation
An Open Source JavaFX PDF Viewer
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2015 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* JavaFXControlListener.java
* ---------------
*/
package org.jpedal.objects.acroforms.actions.JavaFX;
import java.util.ArrayList;
import java.util.List;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.EventHandler;
import javafx.scene.control.Control;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.input.TouchEvent;
/**
* Unlike Swing, JavaFX doesn't allow multiple listeners to be attached to the same event.
*
* As such, instead of making an awkward daisy-chain of events in JavaFX form factory,
* this class will be used to store the events as a single point of entry.
*
* @author Simon
*/
public class JavaFXControlListener {
private static final boolean debug = false;
private final Control comp;
// Event Handlers - Initialised in the constructor
private final EventHandler mouseHandler;
private final EventHandler touchHandler;
private final EventHandler keyHandler;
private final ChangeListener focusHandler;
// Note: All the listeners are initialised as needed.
// Mouse listeners
private List> pressed;
private List> clicked;
private List> released;
private List> entered;
private List> exited;
// Mouse motion listners
private List> dragged;
private List> moved;
// Touch listeners
private List> touchPressed;
private List> touchReleased;
// Key listeners
private List> keyReleased;
private List> keyPressed;
private List> focusEvents;
public JavaFXControlListener(final Control comp){
this.comp = comp;
mouseHandler = new EventHandler() {
@Override public void handle(final MouseEvent event) {
handleMouseEvent(event);
}
};
touchHandler = new EventHandler() {
@Override public void handle(final TouchEvent event) {
handleTouchEvent(event);
}
};
keyHandler = new EventHandler() {
@Override public void handle(final KeyEvent event) {
handleKeyEvent(event);
}
};
focusHandler = new ChangeListener() {
@Override public void changed(final ObservableValue observable, final Boolean oldValue, final Boolean newValue) {
handleFocusEvent(observable, oldValue, newValue);
}
};
}
private void handleMouseEvent(final MouseEvent event){
if(debug) {
System.out.println("Mouse event - " + event.getEventType().getName());
}
if(event.getEventType().equals(MouseEvent.MOUSE_CLICKED)){
executeMouseEvent(clicked, event);
}else if (event.getEventType().equals(MouseEvent.MOUSE_ENTERED)){
executeMouseEvent(entered, event);
}else if (event.getEventType().equals(MouseEvent.MOUSE_EXITED)){
executeMouseEvent(exited, event);
}else if (event.getEventType().equals(MouseEvent.MOUSE_PRESSED)){
executeMouseEvent(pressed, event);
}else if (event.getEventType().equals(MouseEvent.MOUSE_RELEASED)){
executeMouseEvent(released, event);
}else if (event.getEventType().equals(MouseEvent.MOUSE_DRAGGED)){
executeMouseEvent(dragged, event);
}else if (event.getEventType().equals(MouseEvent.MOUSE_MOVED)){
executeMouseEvent(moved, event);
}
}
private static void executeMouseEvent(final List> events, final MouseEvent mouseEvent){
if(events != null){
for(final EventHandler event : events){
event.handle(mouseEvent);
}
}
}
private void handleTouchEvent(final TouchEvent event){
if(debug) {
System.out.println("Touch event - " + event.getEventType().getName());
}
if(event.getEventType().equals(TouchEvent.TOUCH_PRESSED)){
executeTouchEvent(touchPressed, event);
}else if(event.getEventType().equals(TouchEvent.TOUCH_RELEASED)){
executeTouchEvent(touchReleased, event);
}
}
private static void executeTouchEvent(final List> events, final TouchEvent touchEvent){
if(events != null){
for(final EventHandler event : events){
event.handle(touchEvent);
}
}
}
private void handleKeyEvent(final KeyEvent event){
if(debug) {
System.out.println("Key Event - " + event.getEventType().getName());
}
if(event.getEventType().equals(KeyEvent.KEY_PRESSED)){
executeKeyEvent(keyPressed, event);
}else if(event.getEventType().equals(KeyEvent.KEY_RELEASED)){
executeKeyEvent(keyReleased, event);
}
}
private static void executeKeyEvent(final List> events, final KeyEvent keyEvent){
if(events != null){
for(final EventHandler event : events){
event.handle(keyEvent);
}
}
}
private void handleFocusEvent(final ObservableValue observable, final Boolean oldValue, final Boolean newValue) {
if(focusEvents != null){
for(final ChangeListener event : focusEvents){
event.changed(observable, oldValue, newValue);
}
}
}
/**
* Add a listener to all mouse events
* @param handler
*/
public void addMouseListener(final EventHandler handler){
addOnMouseClickedListener(handler);
addOnMouseEnteredListener(handler);
addOnMouseExitedListener(handler);
addOnMousePressedListener(handler);
addOnMouseReleasedListener(handler);
addOnMouseDraggedListener(handler);
addOnMouseMovedListener(handler);
}
public void addOnMouseClickedListener(final EventHandler handler){
if(clicked == null){
clicked = new ArrayList>();
comp.setOnMouseClicked(mouseHandler);
}
clicked.add(handler);
}
public void addOnMousePressedListener(final EventHandler handler){
if(pressed == null){
pressed = new ArrayList>();
comp.setOnMousePressed(mouseHandler);
}
pressed.add(handler);
}
public void addOnMouseReleasedListener(final EventHandler handler){
if(released == null){
released = new ArrayList>();
comp.setOnMouseReleased(mouseHandler);
}
released.add(handler);
}
public void addOnMouseEnteredListener(final EventHandler handler){
if(entered == null){
entered = new ArrayList>();
comp.setOnMouseEntered(mouseHandler);
}
entered.add(handler);
}
public void addOnMouseExitedListener(final EventHandler handler){
if(exited == null){
exited = new ArrayList>();
comp.setOnMouseExited(mouseHandler);
}
exited.add(handler);
}
public void addOnMouseDraggedListener(final EventHandler handler){
if(dragged == null){
dragged = new ArrayList>();
comp.setOnMouseExited(mouseHandler);
}
dragged.add(handler);
}
public void addOnMouseMovedListener(final EventHandler handler){
if(moved == null){
moved = new ArrayList>();
comp.setOnMouseExited(mouseHandler);
}
moved.add(handler);
}
public void addOnTouchPressedListener(final EventHandler handler){
if(touchPressed == null){
touchPressed = new ArrayList>();
comp.setOnTouchPressed(touchHandler);
}
touchPressed.add(handler);
}
public void addOnTouchReleasedListener(final EventHandler handler){
if(touchReleased == null){
touchReleased = new ArrayList>();
comp.setOnTouchReleased(touchHandler);
}
touchReleased.add(handler);
}
public void addKeyListener(final EventHandler handler){
addOnKeyPressedListener(handler);
addOnKeyReleasedListener(handler);
}
public void addOnKeyReleasedListener(final EventHandler handler){
if(keyReleased == null){
keyReleased = new ArrayList>();
comp.setOnKeyReleased(keyHandler);
}
keyReleased.add(handler);
}
public void addOnKeyPressedListener(final EventHandler handler){
if(keyPressed == null){
keyPressed = new ArrayList>();
comp.setOnKeyPressed(keyHandler);
}
keyPressed.add(handler);
}
public void addFocusEvent(final ChangeListener handler){
if(focusEvents == null){
focusEvents = new ArrayList>();
comp.focusedProperty().addListener(focusHandler);
}
focusEvents.add(handler);
}
}