void InitializeTheme()
{
var themesElement = this.sessionStateService.GetSessionState("Themes");
bool activeThemeSet = false;
InitializeThemeCreator();
if (themesElement == null)
{
// No theme data stored in session state yet. Go get the default (if there is one)
themesElement = ReadDefaultThemesStream();
}
if (themesElement != null)
{
var activeTheme = themesElement.Attribute("Active");
foreach (var themeElement in themesElement.Elements("Theme"))
{
var theme = ThemePersistence.LoadTheme(themeElement);
Theme.Instance.Themes.Add(theme);
if (activeTheme != null && activeTheme.Value == theme.ThemeName)
{
Theme.Instance.Theme = theme;
activeThemeSet = true;
}
}
}
if (!activeThemeSet)
{
if (Theme.Instance.Themes.Count == 0)
{
// Make sure at least one theme exists...
var defaultTheme = Theme.Instance.ThemeCreator();
defaultTheme.ThemeName = "Default Theme";
Theme.Instance.Themes.Add(defaultTheme);
}
// If no active one specified, pick the first one arbitrarily.
Theme.Instance.Theme = Theme.Instance.Themes[0];
}
}
void OnSessionStateSaveRequested(object sender, EventArgs e)
{
this.sessionStateService.SetSessionState("Themes", new XElement("Themes",
new XAttribute("Active", Theme.Instance.Theme.ThemeName),
Theme.Instance.Themes.Select(t => ThemePersistence.SaveTheme(t))));
}