/// <summary>
/// Handles the FormClosing event of the AnimationForm control.
/// Checks if collision shapes are valid and animation has at least one frame. If not form is not closed until all shapes and animation are valid.
/// If yes, saves data to the animation and invokes its <see cref="DrawableAsset.DrawableAssetChanged"/>.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.Windows.Forms.FormClosingEventArgs"/> instance containing the event data.</param>
private void AnimationForm_FormClosing(object sender, FormClosingEventArgs e)
{
// check if every shape is valid
for (int i = 0; i < shapesController.ShapesList.Items.Count; ++i)
{
ShapeState shapeState = shapesController.ShapesList.Items[i] as ShapeState;
if (shapeState != null)
{
// shape is not valid
if (!shapeState.IsShapeValid())
{
// select invalid shape
shapesController.ShapesList.SelectedIndex = i;
// show message
shapeState.OnInvalidShape();
// form will not be closed until all shapes are valid
e.Cancel = true;
return;
}
}
}
// check if animation is valid
if (framesView.Items.Count == 0)
{
// show message
Messages.ShowWarning("Invalid animation. No frame is set.");
// form will not be closed until all shapes are valid
e.Cancel = true;
return;
}
// animation is valid => update animation
UpdateAnimation();
// animation changed
animation.InvokeDrawableAssetChanged();
}
