javax.swing.plaf.basic

Class BasicSliderUI.TrackListener

public class BasicSliderUI.TrackListener extends MouseInputAdapter

Helper class that listens for mouse events.

UNKNOWN: Apparently this class was intended to be protected, but was made public by a compiler bug and is now public for compatibility.

Field Summary
protected int	currentMouseX The current X position of the mouse.
protected int	currentMouseY The current Y position of the mouse.
protected int	offset The offset between the current slider value and the cursor's position.

Method Summary
void	mouseDragged(MouseEvent e) Called when the mouse has been dragged.
void	mouseMoved(MouseEvent e) Called when the mouse has moved over a component but no buttons have been pressed yet.
void	mousePressed(MouseEvent e) Called when the mouse is pressed.
void	mouseReleased(MouseEvent e) Called when the mouse is released.
boolean	shouldScroll(int direction) Indicates whether the thumb should scroll in the given direction.

Field Detail

currentMouseX

protected int currentMouseX

The current X position of the mouse.

currentMouseY

protected int currentMouseY

The current Y position of the mouse.

offset

protected int offset

The offset between the current slider value and the cursor's position.

Method Detail

mouseDragged

public void mouseDragged(MouseEvent e)

Called when the mouse has been dragged. This should find the mouse's current position and adjust the value of the {@link JSlider} accordingly.

Parameters: e A {@link MouseEvent}

mouseMoved

public void mouseMoved(MouseEvent e)

Called when the mouse has moved over a component but no buttons have been pressed yet.

Parameters: e A {@link MouseEvent}

Called when the mouse is pressed. When the press occurs on the thumb itself, the {@link JSlider} should have its value set to where the mouse was pressed. If the press occurs on the track, then the thumb should move one block towards the direction of the mouse.

Parameters: e A {@link MouseEvent}

mouseReleased

public void mouseReleased(MouseEvent e)

Called when the mouse is released. This should stop the timer that scrolls the thumb.

Parameters: e A {@link MouseEvent}

shouldScroll

public boolean shouldScroll(int direction)

Indicates whether the thumb should scroll in the given direction.

Parameters: direction The direction to check.

Returns: True if the thumb should move in that direction.