public static DrawerListenerImpl GetOrAdd(DrawerLayout drawer)
{
return(ToolkitServiceProvider.AttachedValueProvider.GetOrAdd(drawer, "!@!@dralist", (layout, o) =>
{
var listenerImpl = new DrawerListenerImpl();
layout.AddDrawerListener(listenerImpl);
return listenerImpl;
}, null));
}
public bool TryHandle(object sender, object message)
{
DrawerLayout drawer = FindDrawer(sender as View);
if (drawer == null)
{
return(true);
}
DrawerListenerImpl.GetOrAdd(drawer);
return(false);
}
private static bool ViewDrawerIsOpenedGetDefaultValue(View view, IBindingMemberInfo bindingMemberInfo)
{
DrawerLayout drawer = FindDrawer(view);
if (drawer == null)
{
BindingServiceProvider.VisualTreeManager.GetRootMember(view.GetType())?.TryObserve(view, DrawerInitializer.Instance);
return(false);
}
DrawerListenerImpl.GetOrAdd(drawer);
return(drawer.IsDrawerOpen(view));
}
public static void RegisterDrawerLayoutMembers()
{
MemberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembersCompat.View.DrawerIsOpened,
ViewDrawerIsOpenedChanged, getDefaultValue: ViewDrawerIsOpenedGetDefaultValue));
INotifiableAttachedBindingMemberInfo <DrawerLayout, bool> actionBarDrawerToggleEnabledMember =
AttachedBindingMember.CreateAutoProperty(AttachedMembersCompat.DrawerLayout.ActionBarDrawerToggleEnabled,
(layout, args) =>
{
if (!args.NewValue)
{
return;
}
Activity activity = layout.Context.GetActivity();
if (activity != null)
{
DrawerListenerImpl
.GetOrAdd(layout)
.SetListener(activity, new ActionBarDrawerToggle(activity, layout, Resource.String.Empty, Resource.String.Empty));
}
});
MemberProvider.Register(actionBarDrawerToggleEnabledMember);
MemberProvider.Register(typeof(DrawerLayout), "ActionBarDrawerEnabled", actionBarDrawerToggleEnabledMember, true);
MemberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembersCompat.DrawerLayout.DrawerListener,
(layout, args) =>
{
var listener = args.NewValue as DrawerLayout.IDrawerListener;
if (listener == null)
{
var func = args.NewValue as Func <DrawerLayout, DrawerLayout.IDrawerListener>;
if (func != null)
{
listener = func(layout);
}
}
if (listener == null)
{
Tracer.Warn("The DrawerListener '{0}' is not supported", args.NewValue);
}
DrawerListenerImpl.GetOrAdd(layout).SetListener(layout.Context, listener);
}));
}
public static DrawerListenerImpl GetOrAdd(DrawerLayout drawer)
{
return ServiceProvider.AttachedValueProvider.GetOrAdd(drawer, "!@!@dralist", (layout, o) =>
{
var listenerImpl = new DrawerListenerImpl();
layout.SetDrawerListener(listenerImpl);
return listenerImpl;
}, null);
}
protected override bool LoadInternal()
{
PlatformExtensions.LayoutInflaterFactory = (context, dataContext, factory, inflater) =>
{
if (factory == null && !ServiceProvider.TryGet(out factory))
{
factory = new ViewFactory();
}
if (inflater == null)
{
return(new BindableLayoutInflaterCompat(factory, context));
}
return(new BindableLayoutInflaterCompat(factory, inflater, context));
};
IBindingMemberProvider memberProvider = BindingServiceProvider.MemberProvider;
//View
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembersCompat.View.DrawerIsOpened,
ViewDrawerIsOpenedChanged, getDefaultValue: ViewDrawerIsOpenedGetDefaultValue));
//Toolbar
memberProvider.Register(
AttachedBindingMember.CreateAutoProperty(AttachedMembersCompat.Toolbar.MenuTemplate,
ToolbarMenuTemplateChanged));
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembersCompat.Toolbar.IsActionBar,
ToolbarIsActionBarChanged));
//DrawerLayout
INotifiableAttachedBindingMemberInfo <DrawerLayout, bool> actionBarDrawerToggleEnabledMember =
AttachedBindingMember.CreateAutoProperty(AttachedMembersCompat.DrawerLayout.ActionBarDrawerToggleEnabled,
(layout, args) =>
{
if (!args.NewValue)
{
return;
}
Activity activity = layout.Context.GetActivity();
if (activity != null)
{
DrawerListenerImpl
.GetOrAdd(layout)
.SetListener(activity, new ActionBarDrawerToggle(activity, layout, Resource.String.Empty, Resource.String.Empty));
}
});
memberProvider.Register(actionBarDrawerToggleEnabledMember);
memberProvider.Register(typeof(DrawerLayout), "ActionBarDrawerEnabled", actionBarDrawerToggleEnabledMember, true);
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembersCompat.DrawerLayout.DrawerListener,
(layout, args) =>
{
var listener = args.NewValue as DrawerLayout.IDrawerListener;
if (listener == null)
{
var func = args.NewValue as Func <DrawerLayout, DrawerLayout.IDrawerListener>;
if (func != null)
{
listener = func(layout);
}
}
if (listener == null)
{
Tracer.Warn("The DrawerListener '{0}' is not supported", args.NewValue);
}
DrawerListenerImpl.GetOrAdd(layout).SetListener(layout.Context, listener);
}));
//ViewPager
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembersCompat.ViewPager.SelectedItem, ViewPagerSelectedItemChanged));
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembersCompat.ViewPager.GetPageTitleDelegate));
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembersCompat.ViewPager.RestoreSelectedIndex));
var itemMember = AttachedBindingMember.CreateAutoProperty(AttachedMembersCompat.ViewPager.CurrentItem,
ViewPagerCurrentItemChanged, AdapterViewCurrentItemAttached, (pager, info) => pager.CurrentItem);
memberProvider.Register(itemMember);
memberProvider.Register(typeof(ViewPager), "SelectedIndex", itemMember, true);
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembers.ViewGroup.ItemsSource.Override <ViewPager>(),
(pager, args) =>
{
var pagerAdapter = pager.Adapter as ItemsSourcePagerAdapter;
if (pagerAdapter == null)
{
pagerAdapter = new ItemsSourcePagerAdapter(pager);
pager.Adapter = pagerAdapter;
}
pagerAdapter.ItemsSource = args.NewValue;
}));
return(true);
}
