Name: yyT116575 Date: 02/21/2001


java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)

The shouldYieldFocus method of InputVerifier should have a second parameter
passed in that is the component that is attempting to grab focus. This is
needed because in some cases you do not want to validate the control. For
example, if the user enters some text in a text control, then presses
the "Cancel" button, you would not want to validate that text. If they switch
to some other control, you may want to validate the text.

public boolean shouldYieldFocus(JComponent input, JComponent target)

  public void grabFocus() {
    if (hasFocus()) {
      return;
    }
    JRootPane rootPane = getRootPane();
    JComponent lastFocus =
        (rootPane == null)? null : rootPane.getCurrentFocusOwner();
    InputVerifier iv =
        (lastFocus == null)? null : lastFocus.getInputVerifier();

    if (!verifyInputWhenFocusTarget) {
      super.requestFocus();
    } else if ((iv == null) || iv.shouldYieldFocus(lastFocus, this)) {
      super.requestFocus();
    }
  }
(Review ID: 117407)
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