/*
* Copyright 2000-2010 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.ex;
import com.intellij.diff.util.DiffUtil;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.editor.Caret;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.DumbAwareAction;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vcs.VcsBundle;
import com.intellij.openapi.vcs.impl.LineStatusTrackerManager;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.BitSet;
import java.util.List;
public class RollbackLineStatusAction extends DumbAwareAction {
@Override
public void update(AnActionEvent e) {
Project project = e.getProject();
Editor editor = e.getData(CommonDataKeys.EDITOR);
if (project == null || editor == null) {
e.getPresentation().setEnabledAndVisible(false);
return;
}
if (DiffUtil.isDiffEditor(editor)) {
e.getPresentation().setEnabledAndVisible(false);
return;
}
LineStatusTracker tracker = LineStatusTrackerManager.getInstance(project).getLineStatusTracker(editor.getDocument());
if (tracker == null || !tracker.isValid() || tracker.isSilentMode()) {
e.getPresentation().setEnabledAndVisible(false);
return;
}
if (!isSomeChangeSelected(editor, tracker)) {
e.getPresentation().setVisible(true);
e.getPresentation().setEnabled(false);
return;
}
e.getPresentation().setEnabledAndVisible(true);
}
@Override
public void actionPerformed(AnActionEvent e) {
Project project = e.getProject();
Editor editor = e.getRequiredData(CommonDataKeys.EDITOR);
LineStatusTracker tracker = LineStatusTrackerManager.getInstance(project).getLineStatusTracker(editor.getDocument());
assert tracker != null;
rollback(tracker, editor, null);
}
protected static boolean isSomeChangeSelected(@NotNull Editor editor, @NotNull LineStatusTracker tracker) {
List<Caret> carets = editor.getCaretModel().getAllCarets();
if (carets.size() != 1) return true;
Caret caret = carets.get(0);
if (caret.hasSelection()) return true;
if (caret.getOffset() == editor.getDocument().getTextLength() &&
tracker.getRangeForLine(editor.getDocument().getLineCount()) != null) {
return true;
}
return tracker.getRangeForLine(caret.getLogicalPosition().line) != null;
}
protected static void rollback(@NotNull LineStatusTracker tracker, @Nullable Editor editor, @Nullable Range range) {
assert editor != null || range != null;
if (range != null) {
doRollback(tracker, range);
return;
}
doRollback(tracker, DiffUtil.getSelectedLines(editor));
}
private static void doRollback(@NotNull final LineStatusTracker tracker, @NotNull final Range range) {
execute(tracker, () -> tracker.rollbackChanges(range));
}
private static void doRollback(@NotNull final LineStatusTracker tracker, @NotNull final BitSet lines) {
execute(tracker, () -> tracker.rollbackChanges(lines));
}
private static void execute(@NotNull final LineStatusTracker tracker, @NotNull final Runnable task) {
DiffUtil.executeWriteCommand(tracker.getDocument(), tracker.getProject(), VcsBundle.message("command.name.rollback.change"), task);
}
}