protected virtual void AttachFlyout(IShellContext context, AView content)
{
Profile.FrameBegin();
_content = content;
_flyoutContent = context.CreateShellFlyoutContentRenderer();
_flyoutWidth = 1;
_flyoutContent.AndroidView.LayoutParameters =
new LayoutParams(1, LP.MatchParent)
{
Gravity = (int)GravityFlags.Start
};
AddView(content);
AddView(_flyoutContent.AndroidView);
AddDrawerListener(this);
((IShellController)context.Shell).AddFlyoutBehaviorObserver(this);
Profile.FrameEnd();
}
protected virtual void AttachFlyout(IShellContext context, AView content)
{
_content = content;
_flyoutContent = context.CreateShellFlyoutContentRenderer();
// Depending on what you read the right edge of the drawer should be Max(56dp, actionBarSize)
// from the right edge of the screen. Fine. Well except that doesn't account
// for landscape devices, in which case its still, according to design
// documents from google 56dp, except google doesn't do that with their own apps.
// So we are just going to go ahead and do what google does here even though
// this isn't what DrawerLayout does by default.
// Oh then there is this rule about how wide it should be at most. It should not
// at least according to docs be more than 6 * actionBarSize wide. Again non of
// this is about landscape devices and google does not perfectly follow these
// rules... so we'll kind of just... do our best.
var metrics = Context.Resources.DisplayMetrics;
var width = Math.Min(metrics.WidthPixels, metrics.HeightPixels);
var actionBarHeight = (int)Context.ToPixels(56);
using (var tv = new TypedValue())
{
if (Context.Theme.ResolveAttribute(global::Android.Resource.Attribute.ActionBarSize, tv, true))
{
actionBarHeight = TypedValue.ComplexToDimensionPixelSize(tv.Data, metrics);
}
}
width -= actionBarHeight;
var maxWidth = actionBarHeight * 6;
width = Math.Min(width, maxWidth);
_flyoutWidth = width;
_flyoutContent.AndroidView.LayoutParameters =
new LayoutParams(width, LP.MatchParent)
{
Gravity = (int)GravityFlags.Start
};
AddView(content);
AddView(_flyoutContent.AndroidView);
AddDrawerListener(this);
((IShellController)context.Shell).AddFlyoutBehaviorObserver(this);
}
void AddFlyoutContentToLayoutIfNeeded(FlyoutBehavior behavior)
{
if (behavior == FlyoutBehavior.Disabled)
{
return;
}
if (_flyoutContent == null && ChildCount > 0)
{
_flyoutContent = _shellContext.CreateShellFlyoutContentRenderer();
UpdateFlyoutSize();
AddView(_flyoutContent.AndroidView);
}
}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
if (disposing)
{
if (!_disposed)
{
_disposed = true;
FlyoutContent.WillAppear -= OnFlyoutContentWillAppear;
FlyoutContent.WillDisappear -= OnFlyoutContentWillDisappear;
((IShellController)_context.Shell).RemoveFlyoutBehaviorObserver(this);
}
FlyoutContent = null;
_content = null;
_context = null;
}
}
