private void TransitionList_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
{
if (this.photoListBox.SelectedItem != null && this.photoListBox.SelectedItem is ComposePhotoViewModel)
{
// 更新设计器以显示选定特效所需的额外的控件.
// UI是一个内容绑定到视图模型的TransitionDesigner属性的ContentControl.
ComposePhotoViewModel photo = (ComposePhotoViewModel)this.photoListBox.SelectedItem;
photo.TransitionDesigner = TransitionFactory.CreateTransitionDesigner(this.transitionList.SelectedItem.ToString());
}
}
private void EditPhotoButton_Click(object sender, System.EventArgs e)
{
if (this.photoListBox.SelectedItem != null && this.photoListBox.SelectedItem is ComposePhotoViewModel)
{
this.photoListBox.IsEnabled = false;
// 备份视图模型, 因此我们可以撤销更新操作.
this._viewModelBackup = ((ComposePhotoViewModel)this.photoListBox.SelectedItem).CopyTo();
this.ShowEditPanelStoryboard.Begin();
}
}
private void RemovePhotoButton_Click(object sender, System.EventArgs e)
{
// 移除选定项目, 关闭对应流.
if (this.photoListBox.SelectedItem != null && this.photoListBox.SelectedItem is ComposePhotoViewModel)
{
ComposePhotoViewModel photo = (ComposePhotoViewModel)this.photoListBox.SelectedItem;
photo.MediaStream.Close();
this._photoDataSource.Remove(photo);
photo.RemoveModel();
}
}
protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
// 准备数据源.
this._photoDataSource = new ObservableCollection <ComposePhotoViewModel>();
this.nameTextBox.Text = App.CurrentStoryName;
foreach (Photo photo in App.MediaCollection)
{
_photoDataSource.Add(ComposePhotoViewModel.CreateFromModel(photo));
}
this.photoListBox.ItemsSource = this._photoDataSource;
base.OnNavigatedTo(e);
}
