/// <summary>
/// This method does the actual loading of the fragment depending on current step.
/// </summary>
private void LoadFragment()
{
if (_currentFragmentType == null)
{
throw new InvalidOperationException("Cannot load fragment if there is CurrentFragmentType == null.");
}
// load the fragment needed
CurrentFragment = Activator.CreateInstance(_currentFragmentType) as WizardStepFragment;
if (CurrentFragment == null)
{
throw new Exception("Fragments used for steps in the wizard must inherit WizardStepFragment. Yours does not.");
}
if (!StepsHistory.ContainsKey(_currentStep))
{
StepsHistory.Add(_currentStep, CurrentFragment.GetType());
}
else
{
StepsHistory[_currentStep] = CurrentFragment.GetType();
}
if (!_serializedData.IsBlank())
{
RunOnUiThread(() => { CurrentFragment.SetData(_serializedData); });
}
// load the actual fragment needed
if (!_isHidden)
{
SupportFragmentManager.BeginTransaction()
.Replace(Resource.Id.frameContent, CurrentFragment, CurrentFragment.FragmentTag)
.Commit();
}
this.SetButtonTitles();
_fragmentButtons.SelectStep(_currentStep);
HideKeyboard(true);
}
/// <summary>
/// This method will initiate going back or forward depending on boolean given.
/// </summary>
/// <param name="goNext">True if go next, otherwise pass false</param>
public void Go(bool goNext)
{
_serializedData = CurrentFragment.GetData();
bool goPrevious = !goNext;
if (goNext)
{
if (!CurrentFragment.IsLastStep)
{
_currentStep++;
}
_currentFragmentType = CurrentFragment.GetNextFragment();
}
else
{
_currentStep--;
if (!StepsHistory.ContainsKey(_currentStep))
{
return;
}
_currentFragmentType = StepsHistory[_currentStep];
}
// if the final step, finish the wizard, otherwise load fragment
if (!CurrentFragment.IsLastStep || goPrevious)
{
LoadFragment();
}
else
{
CurrentFragment.FinishWizard();
WizardFinished = true;
}
}
public void AddLog(string message)
{
StepsHistory.Items.Add(message);
StepsHistory.ScrollIntoView(message);
}
