private void listView_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
const int bufferSize = 4096;
var item = (DirectoryItem)listView.SelectedItem;
if (item == null)
{
return;
}
if (item.isDirectory)
{
if (item.name == ".")
{
Reload();
return;
}
if (item.name == "..")
{
GoUp();
return;
}
if (history.Count - historyNeedle - 1 > 0)
{
history.RemoveRange(historyNeedle + 1, history.Count - historyNeedle - 1);
}
var newDir = currentDirectory + item.name + "/";
if (LoadDirectory(newDir))
{
history.Add(newDir);
historyNeedle++;
buttonForward.IsEnabled = (historyNeedle + 1 < history.Count);
buttonBack.IsEnabled = (historyNeedle - 1 >= 0);
}
}
else
{
// 读取文件内容到临时变量
String tempFileName = System.IO.Path.GetTempFileName() + System.IO.Path.GetExtension(item.path);
using (System.IO.BinaryWriter writer = new System.IO.BinaryWriter(new System.IO.FileStream(tempFileName, System.IO.FileMode.Create)))
{
var file = vfs.NewFile(item.path, VFS.FileMode.Open);
byte[] buffer = new byte[bufferSize];
int count;
while ((count = (int)file.Read(buffer, 0, (uint)buffer.Length)) != 0)
{
writer.Write(buffer, 0, count);
}
}
FadeOutWindow();
XamDialogWindow win = CreateDialogWindow();
win.Header = "VFS";
Label label = new Label();
label.Content = "正在等待应用程序关闭, 文件内容将在程序关闭后自动更新...";
label.VerticalContentAlignment = VerticalAlignment.Center;
label.HorizontalAlignment = HorizontalAlignment.Center;
win.Content = label;
win.IsModal = true;
windowContainer.Children.Add(win);
Utils.ProcessUITasks();
// 调用系统默认程序打开
var process = new System.Diagnostics.Process();
process.StartInfo = new System.Diagnostics.ProcessStartInfo(tempFileName);
process.EnableRaisingEvents = true;
process.Start();
try
{
process.WaitForExit();
}
catch (Exception ex)
{
}
// 在关闭后，读取内容写回文件系统
using (System.IO.BinaryReader reader = new System.IO.BinaryReader(new System.IO.FileStream(tempFileName, System.IO.FileMode.Open)))
{
var file = vfs.NewFile(item.path, VFS.FileMode.Create);
byte[] buffer = new byte[bufferSize];
int count;
while ((count = reader.Read(buffer, 0, buffer.Length)) != 0)
{
file.Write(buffer, 0, (uint)count);
}
}
win.Close();
windowContainer.Children.Remove(win);
FadeInWindow();
Reload();
UpdateInfo();
}
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
if (Properties.Settings.Default["vfsfile"] == null || ((String)(Properties.Settings.Default["vfsfile"])).Length == 0)
{
var r = System.Windows.Forms.MessageBox.Show("首次启动 VFS 需要在磁盘上建立一个虚拟磁盘镜像文件，镜像文件大小为 1GB。\n点击确定后请选择一个可以写入的位置来建立此文件，点击取消关闭程序。", "磁盘镜像文件未找到", System.Windows.Forms.MessageBoxButtons.OKCancel, System.Windows.Forms.MessageBoxIcon.Information);
if (r == System.Windows.Forms.DialogResult.Cancel)
{
Close();
return;
}
using (var dialog = new System.Windows.Forms.SaveFileDialog())
{
dialog.Title = "保存磁盘镜像文件";
dialog.FileName = "vfs.bin";
var result = dialog.ShowDialog();
if (result == System.Windows.Forms.DialogResult.Cancel)
{
Close();
return;
}
else
{
try
{
device = new FileAdapter(dialog.FileName, 1 << 10 << 10 << 10);
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show("打开镜像文件失败，可能您没有权限在该位置写入文件，或您内存不足。程序即将退出，请重新打开程序。");
Close();
return;
}
// 更新配置
Properties.Settings.Default["vfsfile"] = dialog.FileName;
Properties.Settings.Default.Save();
}
}
}
else
{
device = new FileAdapter((String)Properties.Settings.Default["vfsfile"], 1 << 10 << 10 << 10);
}
vfs = new VFS(device);
if (!vfs.IsFormated())
{
var result = System.Windows.Forms.MessageBox.Show("该磁盘镜像文件尚未格式化，是否格式化?", "VFS", System.Windows.Forms.MessageBoxButtons.YesNo);
if (result == System.Windows.Forms.DialogResult.No)
{
Close();
return;
}
vfs.Format(device.Size() >> 10, 4);
// 写入一个示例文件
var file = vfs.NewFile("/README.txt", VFS.FileMode.Create);
file.Write(Encoding.UTF8.GetBytes("Hello world！\r\n\r\n这个文件是格式化时自动建立的，如果你看到了这个文件，说明一切工作正常。\r\n\r\n当你使用记事本修改这个文件并保存以后，它会同步到虚拟文件系统中。\r\n\r\n该虚拟文件系统是索引文件系统，inode 默认占总空间的 10%，理论可支持单一文件最大 2GB。"));
System.Windows.Forms.MessageBox.Show("磁盘格式化成功！", "VFS", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Information);
}
LoadDirectory("/");
UpdateInfo();
}
