/* Copyright (c) 2010, Carl Burch. License information is located in the
* com.cburch.logisim.Main source code and at www.cburch.com/logisim/. */
package com.cburch.logisim.gui.menu;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import com.cburch.logisim.prefs.AppPreferences;
import com.cburch.logisim.proj.Project;
import com.cburch.logisim.proj.ProjectActions;
import static com.cburch.logisim.util.LocaleString.*;
@SuppressWarnings("serial")
class OpenRecent extends JMenu implements PropertyChangeListener {
private static final int MAX_ITEM_LENGTH = 50;
private class RecentItem extends JMenuItem implements ActionListener {
private File file;
RecentItem(File file) {
super(getFileText(file));
this.file = file;
setEnabled(file != null);
addActionListener(this);
}
@Override
public void actionPerformed(ActionEvent event) {
Project proj = menubar.getProject();
Component par = proj == null ? null : proj.getFrame().getCanvas();
ProjectActions.doOpen(par, proj, file);
}
}
private LogisimMenuBar menubar;
private List<RecentItem> recentItems;
OpenRecent(LogisimMenuBar menubar) {
this.menubar = menubar;
this.recentItems = new ArrayList<RecentItem>();
AppPreferences.addPropertyChangeListener(AppPreferences.RECENT_PROJECTS, this);
renewItems();
}
private void renewItems() {
for (int index = recentItems.size() - 1; index >= 0; index--) {
RecentItem item = recentItems.get(index);
remove(item);
}
recentItems.clear();
List<File> files = AppPreferences.getRecentFiles();
if (files.isEmpty()) {
recentItems.add(new RecentItem(null));
} else {
for (File file : files) {
recentItems.add(new RecentItem(file));
}
}
for (RecentItem item : recentItems) {
add(item);
}
}
private static String getFileText(File file) {
if (file == null) {
return getFromLocale("fileOpenRecentNoChoices");
} else {
String ret;
try {
ret = file.getCanonicalPath();
} catch (IOException e) {
ret = file.toString();
}
if (ret.length() <= MAX_ITEM_LENGTH) {
return ret;
} else {
ret = ret.substring(ret.length() - MAX_ITEM_LENGTH + 3);
int splitLoc = ret.indexOf(File.separatorChar);
if (splitLoc >= 0) {
ret = ret.substring(splitLoc);
}
return "..." + ret;
}
}
}
void localeChanged() {
setText(getFromLocale("fileOpenRecentItem"));
for (RecentItem item : recentItems) {
if (item.file == null) {
item.setText(getFromLocale("fileOpenRecentNoChoices"));
}
}
}
@Override
public void propertyChange(PropertyChangeEvent event) {
if (event.getPropertyName().equals(AppPreferences.RECENT_PROJECTS)) {
renewItems();
}
}
}