protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
base.OnNavigatedTo(e);
string id = "";
if (NavigationContext.QueryString.TryGetValue("id", out id))
{
System.Diagnostics.Debug.WriteLine("id: " + id.ToString());
Message msg = MessageData.Instance.Messages.FirstOrDefault(m => m.ID == id);
if (msg != null)
{
_message = msg;
this.DataContext = _message;
}
}
}
protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
base.OnNavigatedTo(e);
System.Diagnostics.Debug.WriteLine("EditMessagePage:OnNavigatedTo");
string id = "";
if (this.State.ContainsKey(EDIT_STATE_KEY))
{
// Retrieve Message from state
Message stateMessage = (Message)this.State[EDIT_STATE_KEY];
// Strange data binding behavior; on Activated from Tombstoning, we need to pull reference from
// our persistent storage and manually set values based on the last state of the form
// TODO: Investigate weird data binding issue
_currentMessage = MessageData.Instance.Messages.FirstOrDefault(m => m.ID == stateMessage.ID);
if (_currentMessage != null)
{
// Build form from state values
_currentMessage.Text = stateMessage.Text;
_currentMessage.AnimationType = stateMessage.AnimationType;
_currentMessage.Speed = stateMessage.Speed;
_currentMessage.FontScale = stateMessage.FontScale;
_currentMessage.ForegroundColor = stateMessage.ForegroundColor;
_currentMessage.BackgroundColor = stateMessage.BackgroundColor;
_isNewMessage = false;
}
else
{
// if it's a new message, no need to manually set property values, a reference will do
_currentMessage = stateMessage;
_isNewMessage = true;
}
}
else if (NavigationContext.QueryString.TryGetValue("id", out id))
{
_currentMessage = MessageData.Instance.Messages.FirstOrDefault(m => m.ID == id);
if (_currentMessage != null)
{
_isNewMessage = false;
}
}
if (_currentMessage == null)
{
// New Message
_currentMessage = new Message();
_isNewMessage = true;
}
this.DataContext = _currentMessage;
}
private void saveFormFields()
{
string itemValue = AnimationListPicker.SelectedItem.ToString().Replace(" ", "");
_currentMessage = (Message)this.DataContext;
_currentMessage.Text = MessageTextBox.Text;
_currentMessage.AnimationType = (AnimationType)Enum.Parse(typeof(AnimationType), itemValue, true);
_currentMessage.Speed = (int)SpeedSlider.Value;
_currentMessage.FontScale = (int)FontScaleSlider.Value;
_currentMessage.ForegroundColor = ForegroundListPicker.SelectedItem.ToString();
_currentMessage.BackgroundColor = BackgroundListPicker.SelectedItem.ToString();
}