protected override void Dispose(bool disposing)
        {
            if (_disposed)
            {
                return;
            }

            if (disposing)
            {
                var viewsToLookAt = new FormsStack <NSView>(Subviews);
                while (viewsToLookAt.Count > 0)
                {
                    var view             = viewsToLookAt.Pop();
                    var viewCellRenderer = view as ViewCellNSView;
                    if (viewCellRenderer != null)
                    {
                        viewCellRenderer.RemoveFromSuperview();
                        viewCellRenderer.Dispose();
                    }
                    else
                    {
                        foreach (var child in view.Subviews)
                        {
                            viewsToLookAt.Push(child);
                        }
                    }
                }
            }
            _disposed = true;

            base.Dispose(disposing);
        }
Exemple #2
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        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                if (NavigationController != null)
                {
                    NavigationController.PushRequested             -= OnPushRequested;
                    NavigationController.PopRequested              -= OnPopRequested;
                    NavigationController.PopToRootRequested        -= OnPopToRootRequested;
                    NavigationController.RemovePageRequested       -= OnRemovedPageRequested;
                    NavigationController.InsertPageBeforeRequested -= OnInsertPageBeforeRequested;
                }

                _toolbarTracker = null;

                if (_currentPage != null)
                {
                    _currentPage.PropertyChanged -= OnCurrentPagePropertyChanged;
                    _currentPage = null;
                }
                if (_currentStack != null)
                {
                    _currentStack.ForEach(s => s.Dispose());
                    _currentStack = null;
                }
            }

            base.Dispose(disposing);
        }
        protected override void Dispose(bool disposing)
        {
            if (disposing && _insetTracker != null)
            {
                _insetTracker.Dispose();
                _insetTracker = null;

                var viewsToLookAt = new FormsStack <UIView>(Subviews);
                while (viewsToLookAt.Count > 0)
                {
                    var view             = viewsToLookAt.Pop();
                    var viewCellRenderer = view as ViewCellRenderer.ViewTableCell;
                    if (viewCellRenderer != null)
                    {
                        viewCellRenderer.Dispose();
                    }
                    else
                    {
                        foreach (var child in view.Subviews)
                        {
                            viewsToLookAt.Push(child);
                        }
                    }
                }
            }

            base.Dispose(disposing);
        }
Exemple #4
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        void ClearChildren(ViewGroup group)
        {
            if (group == null)
            {
                return;
            }

            int count = group.ChildCount;

            for (var i = 0; i < count; i++)
            {
                AView child = group.GetChildAt(i);

                var g = child as ViewGroup;
                if (g != null)
                {
                    ClearChildren(g);
                }

                Type childType = child.GetType();
                FormsStack <AView> stack;
                if (!_freeViews.TryGetValue(childType, out stack))
                {
                    _freeViews[childType] = stack = new FormsStack <AView>();
                }

                stack.Push(child);
            }

            group.RemoveAllViews();
        }
        void InsertPageBefore(Page page, Page before)
        {
            if (before == null)
            {
                throw new ArgumentNullException(nameof(before));
            }
            if (page == null)
            {
                throw new ArgumentNullException(nameof(page));
            }

            var currentList     = _currentStack.Reverse().ToList();
            var beforePageIndex = currentList.IndexOf(p => p.Page == before);
            var pageWrapper     = new NavigationChildPageWrapper(page);

            currentList.Insert(beforePageIndex, pageWrapper);
            _currentStack = new FormsStack <NavigationChildPageWrapper>(currentList);

            var vc = CreateViewControllerForPage(page);

            vc.SetElementSize(new Size(View.Bounds.Width, View.Bounds.Height));
            page.Layout(new Rectangle(0, 0, View.Bounds.Width, View.Frame.Height));
            vc.NativeView.WantsLayer = true;

            var beforeRenderer        = Platform.GetRenderer(before);
            var beforeControllerIndex = ChildViewControllers.IndexOf(beforeRenderer.ViewController);

            InsertChildViewController(vc.ViewController, beforeControllerIndex);
            View.AddSubview(vc.NativeView, NSWindowOrderingMode.Below, beforeRenderer.NativeView);
        }
Exemple #6
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        void PushRenderer(IVisualElementRenderer renderer)
        {
            var reflectableType = renderer as System.Reflection.IReflectableType;
            var rendererType    = reflectableType != null?reflectableType.GetTypeInfo().AsType() : renderer.GetType();

            FormsStack <IVisualElementRenderer> renderers;

            if (!_freeRenderers.TryGetValue(rendererType, out renderers))
            {
                _freeRenderers[rendererType] = renderers = new FormsStack <IVisualElementRenderer>();
            }

            renderers.Push(renderer);
        }
        void RemovePage(Page page, bool removeFromStack)
        {
            page?.SendDisappearing();
            var target = Platform.GetRenderer(page);

            target?.NativeView?.RemoveFromSuperview();
            target?.ViewController?.RemoveFromParentViewController();
            target?.Dispose();
            if (removeFromStack)
            {
                var newSource = _currentStack.Reverse().Where(w => w.Page != page);
                _currentStack = new FormsStack <NavigationChildPageWrapper>(newSource);
            }
        }
        protected override void Dispose(bool disposing)
        {
            if (!_disposed && disposing)
            {
                if (Element != null)
                {
                    if (NavigationPage != null)
                    {
                        NavigationPage.PushRequested             -= OnPushRequested;
                        NavigationPage.PopRequested              -= OnPopRequested;
                        NavigationPage.PopToRootRequested        -= OnPopToRootRequested;
                        NavigationPage.RemovePageRequested       -= OnRemovedPageRequested;
                        NavigationPage.InsertPageBeforeRequested -= OnInsertPageBeforeRequested;
                        NavigationPage.Popped       -= OnPopped;
                        NavigationPage.PoppedToRoot -= OnPoppedToRoot;

                        NavigationPage.SendDisappearing();
                    }
                    ((Element as IPageContainer <Page>)?.CurrentPage as Page)?.SendDisappearing();
                    Element.PropertyChanged -= OnElementPropertyChanged;
                    Platform.SetRenderer(Element, null);
                    Element = null;
                }

                _tracker?.Dispose();
                _tracker = null;

                _events?.Dispose();
                _events = null;

                if (_currentStack != null)
                {
                    foreach (var childPageWrapper in _currentStack)
                    {
                        childPageWrapper.Dispose();
                    }
                    _currentStack.Clear();
                    _currentStack = null;
                }

                Platform.NativeToolbarTracker.Navigation = null;
                _disposed = true;
            }
            base.Dispose(disposing);
        }
Exemple #9
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 public NavigationPageRenderer()
 {
     _currentStack   = new FormsStack <NavigationChildPage>();
     _toolbarTracker = new GtkToolbarTracker();
 }