/*
* 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.diff.actions;
import com.intellij.diff.DiffManager;
import com.intellij.diff.requests.DiffRequest;
import com.intellij.openapi.actionSystem.ActionPlaces;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.Presentation;
import com.intellij.openapi.project.DumbAware;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.VirtualFileWithoutContent;
import consulo.annotations.RequiredDispatchThread;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
abstract class BaseShowDiffAction extends AnAction implements DumbAware {
@RequiredDispatchThread
@Override
public void update(@NotNull AnActionEvent e) {
Presentation presentation = e.getPresentation();
boolean canShow = isAvailable(e);
presentation.setEnabled(canShow);
if (ActionPlaces.isPopupPlace(e.getPlace())) {
presentation.setVisible(canShow);
}
}
@RequiredDispatchThread
@Override
public void actionPerformed(@NotNull AnActionEvent e) {
Project project = e.getProject();
DiffRequest request = getDiffRequest(e);
if (request == null) return;
DiffManager.getInstance().showDiff(project, request);
}
protected abstract boolean isAvailable(@NotNull AnActionEvent e);
protected static boolean hasContent(VirtualFile file) {
return !(file instanceof VirtualFileWithoutContent);
}
@Nullable
protected abstract DiffRequest getDiffRequest(@NotNull AnActionEvent e);
}