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/*
* Copyright 2000-2014 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.fileEditor.impl;
import com.intellij.icons.AllIcons;
import com.intellij.ide.ui.UISettings;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.event.DocumentEvent;
import com.intellij.openapi.editor.event.DocumentListener;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.openapi.fileEditor.FileEditorManager;
import com.intellij.openapi.fileEditor.FileEditorManagerListener;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.wm.ToolWindowAnchor;
import com.intellij.openapi.wm.ToolWindowId;
import com.intellij.openapi.wm.ToolWindowManager;
import com.intellij.openapi.wm.impl.ToolWindowImpl;
import com.intellij.ui.JBColor;
import com.intellij.ui.docking.DockManager;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import java.awt.*;
import java.util.ArrayList;
class PreviewPanel extends JPanel implements DocumentListener, FileEditorManagerListener.Before {
private static final int HISTORY_LIMIT = 10;
private final Project myProject;
private final FileEditorManagerImpl myManager;
private final DockManager myDockManager;
private EditorWindow myWindow;
private boolean myInitialized = false;
private EditorsSplitters myEditorsSplitters;
private ArrayList<VirtualFile> myHistory = new ArrayList<VirtualFile>();
private VirtualFile myModifiedFile = null;
private ToolWindowImpl myToolWindow;
private VirtualFile myAwaitingForOpen = null;
public PreviewPanel(Project project, FileEditorManagerImpl manager, DockManager dockManager) {
myProject = project;
myManager = manager;
myDockManager = dockManager;
setOpaque(true);
setBackground(JBColor.DARK_GRAY);
}
private void initToolWindowIfNeed() {
if (myInitialized) return;
myToolWindow = (ToolWindowImpl)ToolWindowManager.getInstance(myProject)
.registerToolWindow(ToolWindowId.PREVIEW, this, ToolWindowAnchor.RIGHT, myProject, false);
myToolWindow.setIcon(AllIcons.Actions.PreviewDetails);
myEditorsSplitters = new EditorsSplitters(myManager, myDockManager, false) {
@Override
public void updateFileName(VirtualFile updatedFile) {
super.updateFileName(updatedFile);
if (updatedFile != null && updatedFile.equals(getCurrentFile())) {
updateWindowTitle(updatedFile);
}
}
@Override
protected void afterFileOpen(VirtualFile file) {
if (file.equals(myAwaitingForOpen)) {
updateWindowTitle(file);
Document document = FileDocumentManager.getInstance().getDocument(file);
if (document != null) {
myModifiedFile = null;
document.addDocumentListener(PreviewPanel.this, myProject);
}
}
myAwaitingForOpen = null;
}
@Override
public void setTabsPlacement(int tabPlacement) {
super.setTabsPlacement(UISettings.TABS_NONE);
}
@Override
protected boolean showEmptyText() {
return false;
}
};
myProject.getMessageBus().connect().subscribe(FileEditorManagerListener.Before.FILE_EDITOR_MANAGER, this);
myEditorsSplitters.createCurrentWindow();
myWindow = myEditorsSplitters.getCurrentWindow();
myWindow.setTabsPlacement(UISettings.TABS_NONE);
setLayout(new GridLayout(1, 1));
add(myEditorsSplitters);
myToolWindow.setTitleActions(new MoveToEditorTabsAction(), new CloseFileAction());
myInitialized = true;
}
private void updateWindowTitle(VirtualFile file) {
if (myToolWindow == null) return;
if (file == null) {
myToolWindow.setTitle(": (empty)");
}
else {
myToolWindow.setTitle(": " +
StringUtil.getShortened(EditorTabbedContainer.calcTabTitle(myProject, file),
UISettings.getInstance().EDITOR_TAB_TITLE_LIMIT));
}
}
@Override
public void beforeFileOpened(@NotNull FileEditorManager source, @NotNull VirtualFile file) {
myAwaitingForOpen = file;
}
@Override
public void beforeFileClosed(@NotNull FileEditorManager source, @NotNull VirtualFile file) {
if (file.equals(getCurrentFile())) {
updateWindowTitle(null);
Document document = FileDocumentManager.getInstance().getDocument(file);
if (document != null) {
document.removeDocumentListener(this);
}
}
}
@Override
public void beforeDocumentChange(DocumentEvent event) {
}
@Override
public void documentChanged(DocumentEvent event) {
VirtualFile file = FileDocumentManager.getInstance().getFile(event.getDocument());
if (file != null) {
myModifiedFile = file;
}
}
EditorWindow getWindow() {
initToolWindowIfNeed();
return myWindow;
}
@Nullable
VirtualFile getCurrentFile() {
VirtualFile[] files = myWindow.getFiles();
return files.length == 1 ? files[0] : null;
}
private class MoveToEditorTabsAction extends AnAction {
public MoveToEditorTabsAction() {
super(null, "Move to main tabs", AllIcons.Duplicates.SendToTheLeftGrayed);
}
@Override
public void actionPerformed(AnActionEvent e) {
VirtualFile virtualFile = getCurrentFile();
if (virtualFile == null) {
return;
}
myManager.openFileWithProviders(virtualFile, false, myManager.getCurrentWindow());
closeCurrentFile();
}
@Override
public void update(AnActionEvent e) {
super.update(e);
VirtualFile currentFile = getCurrentFile();
e.getPresentation().setEnabled(currentFile != null);
if (currentFile == null) return;
if (isModified(currentFile)) {
e.getPresentation().setIcon(AllIcons.Duplicates.SendToTheLeft);
}
else {
e.getPresentation().setIcon(AllIcons.Duplicates.SendToTheLeftGrayed);
}
}
}
private boolean isModified(@NotNull VirtualFile file) {
return file.equals(myModifiedFile);
}
//returns last open file if it has "modified" status
@Nullable
VirtualFile closeCurrentFile() {
VirtualFile virtualFile = getCurrentFile();
if (virtualFile == null) return null;
if (!myHistory.contains(virtualFile)) {
myHistory.add(virtualFile);
while (myHistory.size() > HISTORY_LIMIT) {
myHistory.remove(0);
}
}
myWindow.closeFile(virtualFile);
this.revalidate();
this.repaint();
return isModified(virtualFile) ? virtualFile : null;
}
private class CloseFileAction extends AnAction {
public CloseFileAction() {
super(null, "Close", AllIcons.Actions.Close);
}
@Override
public void actionPerformed(AnActionEvent e) {
if (getCurrentFile() == null) return;
closeCurrentFile();
ToolWindowManager.getInstance(myProject).getToolWindow(ToolWindowId.PREVIEW).hide(null);
}
@Override
public void update(AnActionEvent e) {
super.update(e);
e.getPresentation().setEnabled(getCurrentFile() != null);
}
}
}
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