EventQueue.java 文件源码

private boolean coalesceEvent(AWTEvent e, int priority) {                      
    if (!(e.getSource() instanceof Component)) {                               
        return false;                                                          
    }                                                                          
    if (e instanceof PeerEvent) {                                              
        return coalescePeerEvent((PeerEvent)e);                                
    }                                                                          
    // The worst case                                                          
    if (((Component)e.getSource()).isCoalescingEnabled()
        && coalesceOtherEvent(e, priority)) 
    {
        return true;
    }                                                                          
    if (e instanceof PaintEvent) {                                             
        return coalescePaintEvent((PaintEvent)e);                              
    }                                                                          
    if (e instanceof MouseEvent) {                                             
        return coalesceMouseEvent((MouseEvent)e);                              
    }                                                                          
    return false;                                                              
}