/*
 * 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.openapi.vcs.checkout;

import com.intellij.openapi.actionSystem.ActionGroup;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.project.DumbAware;
import com.intellij.openapi.vcs.CheckoutProvider;
import com.intellij.util.containers.ContainerUtil;
import consulo.ui.RequiredUIAccess;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.List;

public class CheckoutActionGroup extends ActionGroup implements DumbAware {

  private AnAction[] myChildren;

  @RequiredUIAccess
  @Override
  public void update(@Nonnull AnActionEvent e) {
    super.update(e);
    if (!CheckoutProvider.EXTENSION_POINT_NAME.hasAnyExtensions()) {
      e.getPresentation().setVisible(false);
    }
  }

  @Override
  @Nonnull
  public AnAction[] getChildren(@Nullable AnActionEvent e) {
    if (myChildren == null) {
      final List<CheckoutProvider> providers = CheckoutProvider.EXTENSION_POINT_NAME.getExtensionList();
      ContainerUtil.sort(providers, new CheckoutProvider.CheckoutProviderComparator());
      myChildren = new AnAction[providers.size()];
      for (int i = 0; i < providers.size(); i++) {
        CheckoutProvider provider = providers.get(i);
        myChildren[i] = new CheckoutAction(provider);
      }
    }
    return myChildren;
  }
}

/*
 * 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.openapi.vcs.checkout;

import com.intellij.openapi.actionSystem.ActionGroup;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.project.DumbAware;
import com.intellij.openapi.vcs.CheckoutProvider;
import consulo.ui.RequiredUIAccess;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.List;

public class CheckoutActionGroup extends ActionGroup implements DumbAware {

  private AnAction[] myChildren;

  @RequiredUIAccess
  @Override
  public void update(@Nonnull AnActionEvent e) {
    super.update(e);
    if (!CheckoutProvider.EXTENSION_POINT_NAME.hasAnyExtensions()) {
      e.getPresentation().setVisible(false);
    }
  }

  @Override
  @Nonnull
  public AnAction[] getChildren(@Nullable AnActionEvent e) {
    if (myChildren == null) {
      List<CheckoutProvider> extensionList = CheckoutProvider.EXTENSION_POINT_NAME.getExtensionList();
      myChildren = extensionList.stream().sorted(new CheckoutProvider.CheckoutProviderComparator()).map(CheckoutAction::new).toArray(AnAction[]::new);
    }
    return myChildren;
  }
}

fix problem with unmodified list