/*
* Copyright 2000-2015 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.changes;
import com.intellij.ide.impl.dataRules.GetDataRule;
import com.intellij.openapi.actionSystem.DataProvider;
import com.intellij.openapi.vcs.VcsDataKeys;
import com.intellij.util.ArrayUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Arrays;
import java.util.Collections;
public class VcsChangesSelectionRule implements GetDataRule {
@Nullable
@Override
public Object getData(DataProvider dataProvider) {
return getChangesSelection(dataProvider);
}
@Nullable
public ChangesSelection getChangesSelection(@NotNull DataProvider dataProvider) {
Change currentChange = VcsDataKeys.CURRENT_CHANGE.getData(dataProvider);
Change[] selectedChanges = VcsDataKeys.SELECTED_CHANGES.getData(dataProvider);
if (selectedChanges != null) {
int index = Math.max(ArrayUtil.indexOf(selectedChanges, currentChange), 0);
return new ChangesSelection(Arrays.asList(selectedChanges), index);
}
Change[] changes = VcsDataKeys.CHANGES.getData(dataProvider);
if (changes != null) {
int index = Math.max(ArrayUtil.indexOf(changes, currentChange), 0);
return new ChangesSelection(Arrays.asList(changes), index);
}
if (currentChange != null) {
return new ChangesSelection(Collections.singletonList(currentChange), 0);
}
return null;
}
}