Mouse down & mouse down in one event
I am trying to put a mouse down with a mouse down in the same event. The first mouse down is to control a graph and the second a table. When I add the second mouse down event the Graph mouse down doesn't work.
What am I doing wrong>
Paul Power
I have not lost my mind, it's backed up on a disk somewhere
By stopped working I mean a broken run arrow and disabled property nodes giving broken wires
I have attached the xy graph code being used
Paul Power
I have not lost my mind, it's backed up on a disk somewhere
Attachments:
XY graph - closest point.vi 24 KB
scatter plot.vi 27 KB
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Kill the MouseEven.CLICK event when mouse is held down?
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Mouse Down ,Mouse Click conflict
Dear Flexmasters ,
I have a view component that I would like to be draggable when the mouse is held down , and dispatch an event when clicked ( single-click ). However , when I go to drag and the mouse is released , a click event is dispatched. Is there a way I can prevent the click event from being fired during a drag and drop operation ? As always points WILL be awarded.
Here is the code if you would like to see it.
public function init():void
this.addEventListener(MouseEvent.MOUSE_DOWN , handleStartDrag );
this.addEventListener(MouseEvent.MOUSE_UP , handleStopDrag );
this.addEventListener(MouseEvent.CLICK , layerClick );
private function handleStartDrag(event:MouseEvent):void
event.preventDefault();
var target:UIComponent = UIComponent(event.currentTarget);
target.startDrag(false);
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event.preventDefault();
var target:UIComponent = UIComponent(event.currentTarget);
target.stopDrag();
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if(event.type == MouseEvent.CLICK )
var uiEvent:UIEVENT = new UIEVENT(UIEVENT.LAYERSELECTED);
uiEvent.layer = layer;
dispatchEvent( uiEvent );I overrided the MouseEvent and Group classes to differenciate the MouseEvent.CLICK and MouseEvent.MOUSE_DOWN -> MouseEvent.MOUSE_UP
utils.RealMouseEvent.as
package utils
import flash.events.MouseEvent;
import flash.events.TimerEvent;
import flash.geom.Point;
import flash.utils.Timer;
import settings.Settings;
import spark.components.Group;
[Event(name="realClick", type="utils.RealMouseEvent")]
[Event(name="realMouseUp", type="utils.RealMouseEvent")]
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var pt:Point = new Point(mouseX,mouseY);
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_timer.stop();
dispatchEvent(new RealMouseEvent(RealMouseEvent.REAL_MOUSE_DOWN,_event));
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_isTimeOut = true;
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removeEventListener(MouseEvent.MOUSE_MOVE,mouseMoveHandler);
dispatchEvent(new RealMouseEvent(RealMouseEvent.REAL_MOUSE_DOWN,_event));
utils.RealMouseEventsGroup.as
package utils
import flash.display.InteractiveObject;
import flash.events.MouseEvent;
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public static const REAL_CLICK:String = "realClick";
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public static const REAL_MOUSE_UP:String = "realMouseUp";
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super(type, bubbles, cancelable, src.localX, src.localY, src.relatedObject, src.ctrlKey, src.altKey, src.shiftKey, src.buttonDown, src.delta);
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Do I have a misconception here? When I drag the mouse in a modal JDialog, mouseEntered and mouseExited events are being delivered to JComponents in the parent JFrame that currently happens to be beneath that JDialog. I would not have expected any events to be delivered to any component not in the modal JDialog while that JDialog is displayed.
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Here is sample code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
* This class demonstrates what I believe are TWO bugs in Mouse Event handling in Swing
* 1.1.3_1, 1.1.3_2, 1.1.3_3, and 1.4.0.
* 1) When a MODAL JDialog is being displayed, and the cursor is DRAGGED from the JDialog
* into and across the parent JFrame, Mouse Enter and Mouse Exit events are given to
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* component NOT in the JDialog. Am I crazy?
* You can reproduce this simply by running the main() method, then dragging the cursor
* from the JDialog into and across the JFrame.
* 2) When a MODAL JDialog is being displayed, and the cursor is DRAGGED across the JDialog,
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* components. This is in addition to the problem described above.
* You can reproduce this by dismissing the initial JDialog displayed when the main()
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* the cursor around the displayed JDialog.
* The Mouse Enter and Mouse Exit events are reported via System.err.
public class DragTest
extends JFrame
public static void main(final String[] p_args)
new DragTest();
public DragTest()
super("JFrame");
WindowListener l_windowListener = new WindowAdapter() {
public void windowClosing(final WindowEvent p_evt)
DragTest.this.dispose();
public void windowClosed(final WindowEvent p_evt)
System.exit(0);
MouseListener l_mouseListener = new MouseAdapter() {
public void mouseEntered(final MouseEvent p_evt)
System.err.println(">>> Mouse Entered: " + ((Component)p_evt.getSource()).getName() );
public void mouseExited(final MouseEvent p_evt)
System.err.println(">>> Mouse Exited: " + ((Component)p_evt.getSource()).getName() );
JPanel l_panel1 = new JPanel();
l_panel1.setLayout( new BorderLayout(50,50) );
l_panel1.setName("JFrame Panel");
l_panel1.addMouseListener(l_mouseListener);
JButton l_button = null;
l_button = new JButton("JFrame North Button");
l_button.setName(l_button.getText());
l_button.addMouseListener(l_mouseListener);
l_panel1.add(l_button, BorderLayout.NORTH);
l_button = new JButton("JFrame South Button");
l_button.setName(l_button.getText());
l_button.addMouseListener(l_mouseListener);
l_panel1.add(l_button, BorderLayout.SOUTH);
l_button = new JButton("JFrame East Button");
l_button.setName(l_button.getText());
l_button.addMouseListener(l_mouseListener);
l_panel1.add(l_button, BorderLayout.EAST);
l_button = new JButton("JFrame West Button");
l_button.setName(l_button.getText());
l_button.addMouseListener(l_mouseListener);
l_panel1.add(l_button, BorderLayout.WEST);
l_button = new JButton("JFrame Center Button");
l_button.setName(l_button.getText());
l_button.addMouseListener(l_mouseListener);
l_panel1.add(l_button, BorderLayout.CENTER);
JButton l_actionButton = l_button;
Container l_contentPane = this.getContentPane();
l_contentPane.setLayout( new BorderLayout() );
l_contentPane.add(l_panel1, BorderLayout.NORTH);
JPanel l_panel2 = new JPanel();
l_panel2.setName("JDialog Panel");
l_panel2.addMouseListener(l_mouseListener);
l_panel2.setLayout( new BorderLayout(50,50) );
l_panel2.add( new JButton("JDialog North Button"), BorderLayout.NORTH );
l_panel2.add( new JButton("JDialog South Button"), BorderLayout.SOUTH );
l_panel2.add( new JButton("JDialog East Button"), BorderLayout.EAST );
l_panel2.add( new JButton("JDialog West Button"), BorderLayout.WEST );
l_panel2.add( new JButton("JDialog Center Button"), BorderLayout.CENTER );
final JDialog l_dialog = new JDialog(this, "JDialog", true);
WindowListener l_windowListener2 = new WindowAdapter() {
public void windowClosing(WindowEvent p_evt)
l_dialog.dispose();
l_dialog.addWindowListener(l_windowListener2);
l_dialog.setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
l_dialog.getContentPane().add(l_panel2, BorderLayout.CENTER);
l_dialog.pack();
Action l_action = new AbstractAction() {
{ putValue(Action.NAME, "Perform Action (open dialog)"); }
public void actionPerformed(final ActionEvent p_evt)
l_dialog.setVisible(true);
l_actionButton.setAction(l_action);
this.addWindowListener(l_windowListener);
this.pack();
this.setLocation(100,100);
this.setVisible(true);
l_dialog.setVisible(true);
}(Too bad blank lines are stripped, eh?)
Thanks in advance for any insights you may be able to provide.
---MarkI guess we can think of this as one problem. When mouse dragged, JFrame also (Parent) receives events. If i understood correctly, what happens here is, Modal dialog creates its own event pump and Frame will be having its own. See the source code of Dialog's show() method. It uses an interface called Conditional to determine whether to block the events or yield it to parent pump.
Here is the Conditional code and show method code from java.awt.dialog for reference
package java.awt;
* Conditional is used by the EventDispatchThread's message pumps to
* determine if a given pump should continue to run, or should instead exit
* and yield control to the parent pump.
* @version 1.3 02/02/00
* @author David Mendenhall
interface Conditional {
boolean evaluate();
/////show method
public void show() {
if (!isModal()) {
conditionalShow();
} else {
// Set this variable before calling conditionalShow(). That
// way, if the Dialog is hidden right after being shown, we
// won't mistakenly block this thread.
keepBlocking = true;
if (conditionalShow()) {
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// EventDispatchThread, start a new event pump. 2. If we're
// on any other thread, call wait() on the treelock.
if (Toolkit.getEventQueue().isDispatchThread()) {
EventDispatchThread dispatchThread =
(EventDispatchThread)Thread.currentThread();
* pump events, filter out input events for
* component not belong to our modal dialog.
* we already disabled other components in native code
* but because the event is posted from a different
* thread so it's possible that there are some events
* for other component already posted in the queue
* before we decide do modal show.
dispatchThread.pumpEventsForHierarchy(new Conditional() {
public boolean evaluate() {
return keepBlocking && windowClosingException == null;
}, this);
} else {
synchronized (getTreeLock()) {
while (keepBlocking && windowClosingException == null) {
try {
getTreeLock().wait();
} catch (InterruptedException e) {
break;
if (windowClosingException != null) {
windowClosingException.fillInStackTrace();
throw windowClosingException;
}I didn't get exactly what is happening but this may help to think further
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