EditorCaret.java 文件源码

/**
 * May be called for either component or horizontal scrollbar.
 */
public @Override void componentResized(ComponentEvent e) {
    Component c = e.getComponent();
    if (c == component) { // called for component
        // In case the caretBounds are still null
        // (component not connected to hierarchy yet or it has zero size
        // so the modelToView() returned null) re-attempt to compute the bounds.
        CaretItem caret = getLastCaretItem();
        if (caret.getCaretBounds() == null) {
            dispatchUpdate(false);
            resetBlink();
            if (caret.getCaretBounds() != null) { // detach the listener - no longer necessary
                c.removeComponentListener(this);
            }
        }
    }
}