platform/platform-impl/src/com/intellij/ui/wizard/WizardCallback.java

/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.intellij.ui.wizard;

interface WizardCallback {

  void onStepChanged();
  void onWizardGoalDropped();
  void onWizardGoalAchieved();

  WizardCallback EMPTY = new WizardCallback() {
    public void onStepChanged() {
    }

    public void onWizardGoalDropped() {
    }

    public void onWizardGoalAchieved() {
    }
  };


}