FileNameController.java 文件源码

@Override
public void hierarchyChanged(HierarchyEvent e) {
    if ((e.getComponent() != txtComp)
            || ((e.getChangeFlags() & DISPLAYABILITY_CHANGED) == 0)
            || !txtComp.isDisplayable()) {
        return;
    }

    watcherLogger.finer("componentShown()");                    //NOI18N
    if (foregroundColor == null) {
        foregroundColor = txtComp.getForeground();
    }
    if ((doc.getLength() == 0) && !txtComp.isFocusOwner()) {
        displayInfo();
    }
}