public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
string path = String.Empty;
SectionNavigator nearestSection = value as SectionNavigator;
if (nearestSection == null)
{
StoryNavigator storyNavigator = value as StoryNavigator;
if (storyNavigator != null)
{
nearestSection = storyNavigator.GetParent() as SectionNavigator;
}
}
// Build a path to the section
while (nearestSection != null)
{
Section section = nearestSection.Content as Section;
if (String.IsNullOrEmpty(path))
{
// Initialize
path = section.Title;
}
else
{
path = String.Concat(section.Title, " : ", path);
}
nearestSection = nearestSection.GetParent() as SectionNavigator;
}
return(path);
}
/// <summary>
/// Navigate to a Story's parent section on key input
/// </summary>
/// <param name="e">EventArgs describing the event</param>
private void NavigateToParentSectionOnStory(KeyEventArgs e)
{
// Check if story is currently displayed
StoryNavigator storyNavigator = ServiceProvider.ViewManager.CurrentNavigator as StoryNavigator;
if (storyNavigator != null)
{
if (storyNavigator.GetParent() == null)
{
// Story has no parent, navigation will not succeed. Navigate to home section instead
if (ServiceProvider.ViewManager.NavigationCommands.NavigateToFirstSectionCommand.CanExecute(null))
{
ServiceProvider.ViewManager.NavigationCommands.NavigateToFirstSectionCommand.Execute(null);
}
}
else if (ServiceProvider.ViewManager.NavigationCommands.NavigateToParentSectionCommand.CanExecute(null))
{
ServiceProvider.ViewManager.NavigationCommands.NavigateToParentSectionCommand.Execute(null);
}
e.Handled = true;
}
}