/// <summary>
/// Extensibility point to allow augmentation when showing a child view
/// </summary>
protected virtual void OnFragmentViewShown(BaseFragment fragment, int viewIdOrIndex)
{
base.ExecuteMethod("OnFragmentViewShown", delegate()
{
if (fragment != null)
{
switch (fragment.LayoutZone)
{
case LayoutZone.PrimaryMenu:
case LayoutZone.SecondaryMenu:
break;
default:
this.PrimaryTitle = fragment.Title;
break;
}
if (this.VisibleFragments.ContainsKey(viewIdOrIndex))
{
BaseFragment existing = this.VisibleFragments[viewIdOrIndex];
if (existing != fragment)
{
this.OnFragmentViewRemoved(fragment, viewIdOrIndex);
}
}
this.VisibleFragments[viewIdOrIndex] = fragment;
this.RaiseLayoutZoneChanged(fragment.LayoutZone, fragment);
fragment.OnAddedToMultiHost(this, fragment.LayoutZone);
}
if (!SyncTitleWithFragmentTitleDisabled)
{
this.SupportActionBar.Title = OnActivityTitleUpdating(this.PrimaryTitle, fragment);
}
this.Drawer.CloseDrawers();
});
}
protected virtual bool FragmentAllowsBackButton(BaseFragment fragment, string tag)
{
return(base.ExecuteFunction("FragmentAllowsBackButton", delegate()
{
if (!this.HasOnCreateCompleted)
{
return false;
}
else
{
if (fragment != null)
{
switch (fragment.LayoutZone)
{
case LayoutZone.PrimaryContent:
return true;
case LayoutZone.PrimaryMenu:
case LayoutZone.SecondaryMenu:
default:
return false;
}
}
return false;
}
}));
}
protected void RaiseLayoutZoneChanged(LayoutZone zone, BaseFragment fragment)
{
var handler = this.LayoutZoneChanged;
if (handler != null)
{
handler(this, new LayoutZoneChangedArgs()
{
Zone = zone, Host = this, Fragment = fragment
});
}
}
public static void StartActivity <TActivity, TRoute>(this BaseFragment fragment, TRoute route, bool animate = true, int enterAnimation = Resource.Animation.slide_in_from_right, int exitAnimation = Resource.Animation.slide_out_to_left)
{
Intent intent = new Intent(fragment.Activity.ApplicationContext, typeof(TActivity));
if ((object)route != null)
{
intent.PutExtra(AndroidAssumptions.ROUTE_KEY, JsonConvert.SerializeObject(route));
}
fragment.StartActivity(intent);
if (animate)
{
fragment.Activity.OverridePendingTransition(enterAnimation, exitAnimation);
}
}
public virtual bool Show(BaseFragment fragment, string tag = "")
{
return(base.ExecuteFunction("Show", delegate()
{
int viewID = GetContainerViewId(fragment, tag);
if (viewID == 0)
{
throw new Exception(string.Format("View type did not return a proper view id for {0}", tag));
}
var transaction = this.SupportFragmentManager.BeginTransaction();
transaction.Replace(viewID, fragment, tag);
if (FragmentAllowsBackButton(fragment, tag))
{
transaction.AddToBackStack(null);
}
transaction.Commit();
this.OnFragmentViewShown(fragment, viewID);
return true;
}));
}
/// <summary>
/// Gets the target view id from the requested data
/// </summary>
protected virtual int GetContainerViewId(BaseFragment fragment, string tag)
{
return(base.ExecuteFunction("GetContainerViewId", delegate()
{
if (fragment != null)
{
switch (fragment.LayoutZone)
{
case LayoutZone.PrimaryContent:
return _viewIDCenter;
case LayoutZone.PrimaryMenu:
return _viewIDLeft;
case LayoutZone.SecondaryMenu:
return _viewIDRight;
default:
break;
}
}
return _viewIDCenter;
}));
}
/// <summary>
/// Extensibility point
/// </summary>
protected virtual string OnActivityTitleUpdating(string newTitle, BaseFragment fragment)
{
return(newTitle);
}
/// <summary>
/// Extensibility point to allow augmentation when showing a child view
/// </summary>
protected virtual void OnFragmentViewRemoved(BaseFragment fragment, int viewIdOrIndex)
{
}