/*
 * Copyright 2000-2014 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.ide.util.projectWizard;

import com.intellij.ide.ui.LafManager;
import com.intellij.ide.ui.LafManagerListener;
import com.intellij.openapi.module.WebModuleBuilder;
import com.intellij.openapi.module.WebModuleType;
import com.intellij.openapi.ui.ValidationInfo;
import com.intellij.openapi.util.NotNullLazyValue;
import com.intellij.platform.ProjectTemplate;
import com.intellij.platform.WebProjectGenerator;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import javax.swing.*;

/**
 * @author Dmitry Avdeev
 *         Date: 9/28/12
 */
public abstract class WebProjectTemplate<T> extends WebProjectGenerator<T> implements ProjectTemplate {
  private NotNullLazyValue<GeneratorPeer<T>> myPeerHolder;

  public WebProjectTemplate() {
    reset();
    //peer stays in memory forever. So, adding hard reference is OK here
    //todo[Dmitry]: pass some Disposable object here
    LafManager.getInstance().addLafManagerListener(new LafManagerListener() {
      @Override
      public void lookAndFeelChanged(LafManager source) {
        reset();
      }
    });
  }

  public void reset() {
    myPeerHolder = new NotNullLazyValue<GeneratorPeer<T>>() {
      @NotNull
      @Override
      protected GeneratorPeer<T> compute() {
        return createPeer();
      }
    };
  }

  @NotNull
  @Override
  public ModuleBuilder createModuleBuilder() {
    return WebModuleType.getInstance().createModuleBuilder(this);
  }

  @Nullable
  @Override
  public ValidationInfo validateSettings() {
    return myPeerHolder.getValue().validate();
  }

  public Icon getIcon() {
    return WebModuleBuilder.ICON;
  }

  public Icon getLogo() {
    return getIcon();
  }

  @NotNull
  public GeneratorPeer<T> getPeer() {
    return myPeerHolder.getValue();
  }

  /**
   * Allows to postpone first start of validation
   *
   * @return <code>false</code> if start validation in {@link ProjectSettingsStepBase#registerValidators()} method
   */
  public boolean postponeValidation() {
    return true;
  }
}
