/// <summary>
/// 選択されたアイテムを外部ファイルに保存する.
/// </summary>
/// <returns></returns>
private async Task ExportItemsAsync()
{
var items = GetSelectedItems();
if (items == null)
{
return;
}
var picker = new Windows.Storage.Pickers.FileSavePicker();
picker.FileTypeChoices.Add("zip", new string[] { ".zip" });
var file = await picker.PickSaveFileAsync();
if (file == null)
{
return;
}
this.ItemsChanging = true;
using (var zipArchive = await ZipArchiveHelper.CreateZipArchiveFromFileAsync(file, System.IO.Compression.ZipArchiveMode.Create))
{
foreach (var item in items)
{
await item.ExportAsync(zipArchive);
}
}
this.ItemsChanging = false;
}
/// <summary>
/// 外部ファイルに保存されたアイテムを読み込む.
/// </summary>
/// <returns></returns>
private async Task ImportItemsAsync()
{
var picker = new Windows.Storage.Pickers.FileOpenPicker();
picker.FileTypeFilter.Add(".zip");
var file = await picker.PickSingleFileAsync();
if (file == null)
{
return;
}
this.ItemsChanging = true;
using (var zipArchive = await ZipArchiveHelper.CreateZipArchiveFromFileAsync(file, System.IO.Compression.ZipArchiveMode.Read))
{
await CanvasItem.ImportAsync(zipArchive);
}
this.ItemsChanging = false;
}
