private async Task UpdateSelectedAsync(HamburgerButtonInfo previous, HamburgerButtonInfo value)
{
DebugWrite($"OldValue: {previous}, NewValue: {value}");
// pls. do not remove this if statement. this is the fix for #410 (click twice)
if (previous != null)
{
IsOpen = (DisplayMode == SplitViewDisplayMode.CompactInline && IsOpen);
}
// signal previous
if (previous != null && previous != value && previous.IsChecked.Value)
{
previous.IsChecked = false;
previous.RaiseUnselected();
// Workaround for visual state of ToggleButton not reset correctly
if (value != null)
{
var control = LoadedNavButtons.First(x => x.HamburgerButtonInfo == value).GetElement <Control>();
VisualStateManager.GoToState(control, "Normal", true);
}
}
// navigate only when all navigation buttons have been loaded
if (AllNavButtonsAreLoaded && value?.PageType != null)
{
if (await NavigationService.NavigateAsync(value.PageType, value?.PageParameter, value?.NavigationTransitionInfo))
{
IsOpen = (DisplayMode == SplitViewDisplayMode.CompactInline && IsOpen);
if (value.ClearHistory)
{
NavigationService.ClearHistory();
}
if (value.ClearCache)
{
NavigationService.ClearCache(true);
}
}
else if (NavigationService.CurrentPageType == value.PageType &&
(NavigationService.CurrentPageParam ?? string.Empty) == (value.PageParameter ?? string.Empty))
{
if (value.ClearHistory)
{
NavigationService.ClearHistory();
}
if (value.ClearCache)
{
NavigationService.ClearCache(true);
}
}
else if (NavigationService.CurrentPageType == value.PageType)
{
// just check it
}
else
{
return;
}
}
// that's it if null
if (value == null)
{
return;
}
else
{
value.IsChecked = (value.ButtonType == HamburgerButtonInfo.ButtonTypes.Toggle);
if (previous != value)
{
value.RaiseSelected();
}
}
}
private async Task UpdateSelectedAsync(HamburgerButtonInfo previous, HamburgerButtonInfo current)
{
// pls. do not remove this if statement. this is the fix for #410 (click twice)
if (previous != null)
{
IsOpen = (DisplayMode == SplitViewDisplayMode.CompactInline && IsOpen);
}
// signal previous
if (previous != null && previous != current && previous.IsChecked.Value)
{
// Workaround for visual state of ToggleButton not reset correctly
if (current != null)
{
var control = LoadedNavButtons.First(x => x.HamburgerButtonInfo == current).GetElement <Control>();
VisualStateManager.GoToState(control, "Normal", true);
}
}
// navigate only when all navigation buttons have been loaded
if (AllNavButtonsAreLoaded && current?.PageType != null)
{
if (await NavigationService.NavigateAsync(current.PageType, current?.PageParameter, current?.NavigationTransitionInfo))
{
SignalPreviousPage(previous, current);
SignalCurrentPage(previous, current);
IsOpen = (DisplayMode == SplitViewDisplayMode.CompactInline && IsOpen);
if (current.ClearHistory)
{
NavigationService.ClearHistory();
}
if (current.ClearCache)
{
var frameState = await(NavigationService.FrameFacade as ITemplate10FrameInternal).GetFrameStateAsync();
await frameState.ClearAsync();
}
}
else if (NavigationService.CurrentPageType == current.PageType && (NavigationService.CurrentPageParam ?? string.Empty) == (current.PageParameter ?? string.Empty))
{
SignalPreviousPage(previous, current);
SignalCurrentPage(previous, current);
if (current.ClearHistory)
{
NavigationService.ClearHistory();
}
if (current.ClearCache)
{
var frameState = await(NavigationService.FrameFacade as ITemplate10FrameInternal).GetFrameStateAsync();
await frameState.ClearAsync();
}
}
else if (previous == null || NavigationService.CurrentPageType == current.PageType)
{
SignalCurrentPage(previous, current);
}
else
{
// Re-instate Selected to previous page, but avoid calling this method (UpdateSelectedAsync) all over
// again, and we use a flag to effect this. See InternalSelectedChanged() method where it's used.
_isUpdateSelectedRunning = true;
try
{
Selected = previous;
}
finally
{
_isUpdateSelectedRunning = false;
}
current.IsChecked = false;
current.RaiseUnselected();
return;
}
}
else
{
SignalPreviousPage(previous, current);
SignalCurrentPage(previous, current);
}
}