public FrameManagerBase()
{
// FrameManager = this;
// SystemNavigationManager.GetForCurrentView().BackRequested += FrameManagerBase_BackRequested; ;
FrameHelpers.action += () =>
{
if (RightFrame == null)
{
return(false);
}
if (RightFrame.CanGoBack)
{
RightFrame.GoBack();
RightFrameContentChange?.Invoke(this, RightFrame.CanGoBack);
}
else if (LeftFrame.CanGoBack)
{
LeftFrame.GoBack();
LeftFrameContentChange?.Invoke(this, LeftFrame.CanGoBack);
}
else
{
return(false);
}
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = RightFrame.CanGoBack || LeftFrame.CanGoBack
? AppViewBackButtonVisibility.Visible
: SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility == AppViewBackButtonVisibility.Visible
? AppViewBackButtonVisibility.Visible
: AppViewBackButtonVisibility.Collapsed;
return(true);
};
}
public void RightFrameClearAndNav(Action <Frame> action)
{
action(RightFrame);
while (RightFrame.BackStack.Count > 1)
{
RightFrame.BackStack.RemoveAt(1);
}
RightFrameContentChange?.Invoke(this, true);
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = AppViewBackButtonVisibility.Visible;
}
public bool RightFrameGoback()
{
if (RightFrame.CanGoBack)
{
RightFrame.GoBack();
RightFrameContentChange?.Invoke(this, RightFrame.CanGoBack);
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = RightFrame.CanGoBack
? AppViewBackButtonVisibility.Visible
: AppViewBackButtonVisibility.Collapsed;
return(true);
}
else
{
return(false);
}
}
protected virtual void OnRightFrameContentChange(bool e)
{
RightFrameContentChange?.Invoke(this, e);
}
public void RightFrameAndNav(Action <Frame> action)
{
action(RightFrame);
RightFrameContentChange?.Invoke(this, true);
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = AppViewBackButtonVisibility.Visible;
}