public NewImageVM(IMessageBus Messenger,
IStoreImages ImageStore) {
Messenger.Listen<IElementVM<MultimediaObject>>(MessageContracts.EDIT)
.Where(vm => vm.Model.MediaType == MediaType.Image && vm.Model.IsNew())
.SelectMany(mmo => {
var capture = new CameraCaptureTask();
var results =
Observable.FromEventPattern<PhotoResult>(h => capture.Completed += h, h => capture.Completed -= h)
.Select(ev => ev.EventArgs)
.Catch(Observable.Empty<PhotoResult>())
.Select(res => new { VM = mmo, Result = res })
.Take(1)
.Replay(1);
results.Connect();
try {
capture.Show();
}
catch (InvalidOperationException) {
}
return results;
})
.Where(tuple => tuple.VM != null
&& tuple.Result != null
&& tuple.Result.TaskResult == TaskResult.OK)
.Do(tuple => {
tuple.VM.Model.Uri = ImageStore.StoreImage(tuple.VM.Model.NewFileName(), tuple.Result);
})
.Select(t => t.VM as IElementVM<MultimediaObject>)
.ToMessage(Messenger, MessageContracts.SAVE);
}
public BackupService(
ISettingsService Settings,
IStoreImages ImageStore,
ICurrentProfile Profile,
[ThreadPool] IScheduler ThreadPool
) {
Contract.Requires(Settings != null);
Contract.Requires(ImageStore != null);
Contract.Requires(Profile != null);
Contract.Requires(ThreadPool != null);
this.Settings = Settings;
this.ImageStore = ImageStore;
this.Profile = Profile;
this.ThreadPool = ThreadPool;
this.SettingsSerializer = new XmlSerializer(typeof(AppSettings));
CreateSnapshotsDirIfNecessary();
}
