private static void ChangeAppStyle(ResourceDictionary resources, ThemeGroup p_oldGroup, ThemeGroup p_newGroup)
{
var themeChanged = false;
if (p_oldGroup != null)
{
var oldResource = p_oldGroup.ResourceDictionaries;
if (oldResource != null && p_oldGroup.Name == p_newGroup.Name)
{
foreach (var dr in oldResource)
{
themeChanged = resources.MergedDictionaries.Remove(dr);
}
}
}
var newResource = p_newGroup.ResourceDictionaries;
if (newResource != null)
{
foreach (var dr in newResource)
{
resources.MergedDictionaries.Add(dr);
}
}
if (themeChanged)
{
//OnThemeChanged(newAccent, newTheme);
}
}
public void ApplyResource(ResourceDictionary resources, ThemeGroup p_group)
{
if (p_group == null)
{
throw new ArgumentNullException(nameof(p_group));
}
var name = p_group.Name;
ThemeGroup old = null;
_currentGroups.TryGetValue(name, out old);
_currentGroups[name] = p_group;
ChangeAppStyle(resources, old, p_group);
}
public ThemeGroup FindThemeGroup(ResourceDictionary resources, string p_key, string[] p_sources)
{
if (p_key == null)
{
throw new ArgumentNullException(nameof(p_key));
}
ThemeGroup themeGroup;
if (!_currentGroups.TryGetValue(p_key, out themeGroup))
{
var query = resources.MergedDictionaries.Where(i => p_sources.Any(j => string.Equals(j, i.Source.ToString(), StringComparison.OrdinalIgnoreCase)));
themeGroup = new ThemeGroup(p_key, query);
}
return(themeGroup);
}