/*
* Copyright 2000-2016 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.wm.impl.status;
import com.intellij.icons.AllIcons;
import com.intellij.ide.DataManager;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.application.WriteAction;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.openapi.fileEditor.FileEditorManagerEvent;
import com.intellij.openapi.fileEditor.FileEditorManagerListener;
import com.intellij.openapi.fileEditor.ex.FileEditorManagerEx;
import com.intellij.openapi.fileEditor.impl.EditorsSplitters;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.Messages;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.wm.StatusBar;
import com.intellij.openapi.wm.StatusBarWidget;
import com.intellij.ui.UIBundle;
import com.intellij.util.Consumer;
import com.intellij.util.io.ReadOnlyAttributeUtil;
import com.intellij.util.messages.MessageBusConnection;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import java.awt.event.MouseEvent;
import java.io.IOException;
public class ToggleReadOnlyAttributePanel implements StatusBarWidget.Multiframe, StatusBarWidget.IconPresentation, FileEditorManagerListener {
private Project myProject;
private StatusBar myStatusBar;
public ToggleReadOnlyAttributePanel(@NotNull Project project) {
myProject = project;
MessageBusConnection connection = project.getMessageBus().connect(this);
connection.subscribe(FileEditorManagerListener.FILE_EDITOR_MANAGER, this);
}
@Override
@NotNull
public Icon getIcon() {
VirtualFile virtualFile = getCurrentFile();
return virtualFile == null || virtualFile.isWritable() ? AllIcons.Ide.Readwrite : AllIcons.Ide.Readonly;
}
@Override
@NotNull
public String ID() {
return "ReadOnlyAttribute";
}
@Override
public StatusBarWidget copy() {
return new ToggleReadOnlyAttributePanel(myProject);
}
@Override
public WidgetPresentation getPresentation(@NotNull PlatformType type) {
return this;
}
@Override
public void dispose() {
myStatusBar = null;
myProject = null;
}
@Override
public void install(@NotNull StatusBar statusBar) {
myStatusBar = statusBar;
}
@Override
public String getTooltipText() {
return isReadonlyApplicable() ? UIBundle.message("read.only.attr.panel.double.click.to.toggle.attr.tooltip.text") : null;
}
@Override
public Consumer<MouseEvent> getClickConsumer() {
return mouseEvent -> {
final VirtualFile file = getCurrentFile();
if (!isReadOnlyApplicableForFile(file)) {
return;
}
FileDocumentManager.getInstance().saveAllDocuments();
try {
WriteAction.run(() -> ReadOnlyAttributeUtil.setReadOnlyAttribute(file, file.isWritable()));
myStatusBar.updateWidget(ID());
}
catch (IOException e) {
Messages.showMessageDialog(getProject(), e.getMessage(), UIBundle.message("error.dialog.title"), Messages.getErrorIcon());
}
};
}
private boolean isReadonlyApplicable() {
VirtualFile file = getCurrentFile();
return isReadOnlyApplicableForFile(file);
}
private static boolean isReadOnlyApplicableForFile(@Nullable VirtualFile file) {
return file != null && !file.getFileSystem().isReadOnly();
}
@Nullable
private Project getProject() {
return CommonDataKeys.PROJECT.getData(DataManager.getInstance().getDataContext((JComponent) myStatusBar));
}
@Nullable
private VirtualFile getCurrentFile() {
final Project project = getProject();
if (project == null) return null;
EditorsSplitters splitters = FileEditorManagerEx.getInstanceEx(project).getSplittersFor(myStatusBar.getComponent());
return splitters.getCurrentFile();
}
@Override
public void selectionChanged(@NotNull FileEditorManagerEvent event) {
if (myStatusBar != null) {
myStatusBar.updateWidget(ID());
}
}
}