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Listener and events

P: n/a
Hello everybody,

I'm currently working on graphics application to draw charts. I have one
class Chart who extends JComponent and differents objects in Chart class
(sub_chart, tool_bar etc. who do not extend JComponent for optimization

My class chart listens for mouse event, and send these events to each of the
class it contains, depending the coordinate where the mouse is clicked,
dragged... that permits to the other classes to manage their events.

My implementation is :
class Chart extends JComponent implements Observer
with a inner class
private class MouseHandler extends MouseAdapter implements
for mouse events.

then, I have :
class Plot implements PlotDraggedListener

When the Chart receive a MouseEvent inside the bounds of the Plot (by
calling plot.isInPlotBounds(e.getPoint())) the Chart sends a
PlotDraggedEvent to Plot who make a action.

Does it seems a good way to do that ?
Is there another solution ?

Thanks in advance for your responses.
Jul 17 '05 #1
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