MacOS (#650)

* [MacOS] Add SwitchRenderer

* [MacOS] Add TimePickerRenderer

* [MacOS] Cleanup TimePcikerRender

* [MacOS] Add WebViewRenderer

* [MacOS] Add Javascript evaluate to webview

* [MacOS] Fix build error on WebViewRenderer

* [MacOS] Add Base and TextCell renderers

* [MacOS] Start on ListViewRenderer

* [MacOS] Cleanup

* [MacOS] Vertical center text on default NSTextField

* [MacOS] Center NSTextField vertically

* [MacOS] Add ImageCellRenderer

* [MacOS] Add SwitchCellRenderer

* [MacOS] Add SwitchCellRenderer

* [iOS] Allow to set background color on other CellRenderers

* [MacOS] Fix selection mode on ListView

* [MacOS] Set background on Entry of entry cell

* [MacOS] Fix casting bug on CellRenderer

* [MacOS] Other fix on CellRenderer background

* [MacOS] Add ViewCellRenderer

* [MacOS] Fixes and cleanup on cells

* [MacOS] Add NSScrollView so NSTableView can scroll

* [MacOS] Add HeaderView to ListView

* [MacOS] Cleanup

* [Controls] Add Header support to ListView

* [MacOS] NSView reuse on NSTableView

* [MacOS] Some fix on layour order

* [MacOS] Add CarouselPageRenderer

* [MacOS] Implement EventTracker on PageRenderer

* [MacOS] Cleanup CarouselPageRenderer

* [MacOS] Add MasterDetailPage renderer

* [MacOS] MDP renderer don't allow drag of splitter

* [MacOS] Add TabbedPage renderer

* [MacOS] Initial sketch of NavigationPageRenderer

* [MacOS] Send disappearing of CurrentPage on Dispose on NavigationPageRenderer

* [MacOS] Add Gallery page for Mac

* [MacOS] Add MacOSExpressionSearch

* [MacOS] Fix ColorExtension

* [MacOS] Fix MDP renderer layout

* [MacOS] Implement native selection on ListViewRenderer

* [MacOS] Deselect a item on NSTableView

* [MacOS] Remove previous SplitViewItems

* [MacOS] Fix navigationpage height

* [MacOS] Add toolbar for NavigationPageRenderer

* [MacOS] Don't remove selection for now (crashing)

* [MacOS] Refactor page and back button title on NavigationPageRenderer

* [MacOS] Fix bug when native navigate back

* [MacOS] Hide layer when transition

* [MacOS] ListviewRenderer fix BbackgroundColor

* [MacOS] Fix background on ScrollViewRenderer

* [MacOS] Fix header measure on ListViewRenderer

* [MacOS] Add Mac twitter demo

* [Controls] Spaces for easy reading

* [MacOS] More xaml cleanup

* [Core] Add Mac as aTargetPlatform

* [MacOS] Add alerts and actionsheets

* [MacOS] Add GestureRecognizers

* [MacOS] Fix Layout issues when adding children, enable transformations

* [MacOS] Fix title on tab item, move to tabbed navigation based on segmented control

* [MacOS] Hide toolbar when not needed, this allows to work with tabbed page, cleanup

* [MacOS] Add NativeBindings and NativeViewWrapper

* [MacOS] Fix AssemblyInfo

* [MacOS] FIX NRE on SetBackgroundColor BoxView

* [MacOS] Fix NavigationPageRenderer

* [MacOS] Fix build

* [MacOS] Also update page when it resizes

* [MacOS] Add LayoutRenderer for handle items position when the bounds change.

* [MacOS] Refactor/Cleanup

* [MacOS] Add toolbar items support to NavigationPage

* [MacOS] Resize images for TabViewITems

* [MacOS] Fix TabbedPage resize issues , allow users to override some features when creating TVI

* [MacOS] Fix hide/show Navigation toolbar

* [MacOS] Redo CarouselPageRenderer with NSPageController

* [MacOS] Add support for Modal pages

* [MacOS] Refactor navigation from platform

* [Nuget] Add nuget for MacOS

* [Nuget]Fix nuspec

* [Nuget] Add variables for CI

* [Controls] Remove MainMenu from MacOS

* [MacOS] Add TableView renderer (no headers yet)

* [MacOS] Refactoring, marking extensions as internal

* [MacOS] Add group headers for TableViewRenderer

* [MacOS] Workaround for updates on listview collection

* [MacOS] Handle updates of rows in the ListViewRenderer properly

* [MacOS] Fix navigation animation

* Fix navigation header issues with modal pages

* [MacOS] Fix MDP issues with resizing

* [MacOS] Fix general dispose

* [MacOS] Add a ViewControllerWrapper for NSSplitView

* [MacOS] MDP renderer fix animation

* [MacOS] Fix ListView selection bug

* [MacOS] Fix rendering MDP Layout inside wrappers

* [MacOS] Re write the MainToolbar handler

* [MacOS] Don't use Sierra new extensions so we can run in stable channel

* [MacOS] Another way to hide the toolbar (smarter i think)

* [MacOS] Fix MDP bug and remove debug color

* [Controls] Add HanselForms sample

* [MacOS] Fix NRE WebviewRenderer

* [MacOS] Fix uneven rows on ListView renderer

* [MacOS] Fix NRE on load (can+t find the reason this happens)

* [MacOS] Fix uneven rows

* [MacOS] Fix header sizing on ListViewRenderer

* [Controls] More stuff on HanselForms

* [MacOS] Remove warning from ListViewRenderer

* [MacOS] Fix PageRenderer bug double init

* [MacOS] Don't calculate height if RowHeight is provided

* [Controls] More Hanselforms stuff

* [MacOS] Once again a new implementation for the NavigationBar, this time using a custom view to support BackgroundColor

* [MacOS] Fix build

* [MacOS] Refactoring AwesomeBar related controls

* Fix build

* [MacOS] NavigationBar update background and t test colors

* [MacOS] Fix when we remove navigation so it works when the NavigationRenderer wasn't removed from the parent controller like in a TabbedPage

* [MacOS] Add support for ListView  grouping

* [MacOS] Fix image extension method.

* [MacOS] Add base Maps project

* [MacOS] Export MapRenderer

* [MacOS] Add pin click and geocoderbacked for Maps

* [MacOS] Add extra binding project for API not in stable.

* [MacOS] Add MacOS Maps lib

* [MacOS]Fix build on alpha

* [MacOS] Remove MacOS Maps extra binding

* [UITest] Basic macOS setup

* [UITest] Add MacOSApp wrapper implementation

* [MacOS] Set AutomationID

* [UITests] Add ActionSheetUITests to MacOS UITest

* [MacOS] Fix bug on Picker

* [UITests] Link basic uitest basefixture and related files

* [MacOS] Fix pickers reuse

* [UItests] Fix MacOS app path

* [UITest] Ignore UItest for appearing on macOS for now

* [UITest] Update macOS for 2.0.3

* [UITest] Refactor EnterText MacOS app

* [UITest]Fix ViewQuery on MacOS

* [UITest]Fix IsEnabled UItest on macOS

* [UITest] Implement Enter, mark some tests inconclusive fix others

* [MacOS] Implement Entry Completed event

* [UITests] Fix UITest for IsVisible, ignore ToolbarItem test for now

* [UITests] Fix ISVisible again add extra category

* [Controls] Cleanup macOS gallery

* [MacOS] Fix Assembly info

* [Docs] Fix docs

* Fix build

* [Nuget] Fix nuspec

* [Controls] Link files on MacOS

* [Core] Update Forms stack before firing a event saying page was removed, possible breaking change

* [MacOS] Implement RemovePage on NavigationPAgeRenderer

* [UItest] Ignore some , implement back on MacOS UITest app

* [MacOS] Add default back button name (needs to be translated)

* [MacOS] Fix dispose

* [UITest] Make 29257 work on MacOS

* [MacOS] Rename stuff

* [MacOS] More renaming and cleanup

* [MacOS] Share implementations for iOS

* [MacOS] Reuse more IOS extensions

* [MacOS] Reuse FontExtensions

* [MacOS] Share NativeViewWrapper related stuff

* [MAcOS] Share event args and ExportRenderer

* [MacOS] Share platform effect

* [MacOS] Fix build

* [Docs]Fixing docs

* [MacOS] Fix ViewCell reuse

* [Core] Support ListView CachingStrategy on MacOS

* [MacOS] Fix issues with TextCell and ImageCell (we can’t set null to a NSControl value)

* [MacOS] Fix MDP child sizing bug
[UITest] Query marked by id and text

* [MacOS] Comment test related with context actions

* [MacOS] Implement missing stuff on ticker

* [MacOS] Make sure VisualElemenTracker calls the ticker update

* [UITests]Ignore context actions and not possible to test

* [MacOS] Fix Grouping bug on Listview

* [MacOS] Fix selection on Listview when using grouping

* [MacOS] Update navbar when page is popped

* [MacOS] Cleanup NavigationBar

* [Controls] More info on exceptions

* [MacOS] Fix bug animation pop modal

* [MacOS] Bring back BackgroundColor of NavigationBar

* [MacOS] Fix UITest animation delay

* [MacOS] Treat warnings as errors

* [MacOS] Center title on toolbar

* [Core] Add Platform configuration specific for MacOS

* [MacOS] Implement TabbedPage platform specific to handle TabItems on NavigationPage bar

* [MacOS] Fix warning

* [MacOS] Fix bug on SearchBar color

* [MacOS]Fix build

* [MacOS] remove extra dll from maps

* [Docs] Update docs

* [MacOS]Cleanup and refactoring

* Revert "[MacOS] remove extra dll from maps"

This reverts commit 73b948937001fea3f28449a963d0b94943e07aa0.

* [MacOS] Fix wrong refactoring

* [MacOS] Remove gallery and uitest project

* [MacOS] dix formatting

* [MacOS] Remove extra stuff

* Merge branch 'master' into macOS-gallery

* [MacOS] Fix rebase

* [MacOS] Fix TargetPlatform

* fix docs

* [MacOS] Fix bug on TabbedPageRenderer no title

* [MacOS] Remove FormsNSView

* [MacOS] Cleanup on dispose on MDP renderer

* [MacOS] Update current page when source changes

* [MacOS] More cleanup

* [MacOS] Make sure we show the previous page when popping a Modal

* [MacOS] Fix issue with sizing the Header and visibility, remove for now header renderer reuse

* [MacOS] Clean CustomNSTableView

* [MacOS] Share LabelRenderer with iOS

* [MacOS] Share ResourcesProvider with iOS

* [MAcoS] Share VisualElementPackager with iOS

* [MacOS] Share ViewRenderer with iOS

* [MacOS] Merge with VisualElementTracker from iOS

* [MacOS] Merge with EventTracker from iOS

* [MacOS] Merge with VisualElementRenderer of iOS

* [MacOS] Make sure we always have a layer

* [MacOS] Fix Tracker merge with iOS version

* [MacOS] Fix bug with tabbed page on modal without navigation

* [Core] Rever change on core

* [MacOS] Clear renderers before setting them MDP

* [MacOS] Update tabbedPage ContainerArea

* [MacOS] Fix ListViewRenderer

* [MacOS] Make sure we don’t pass null to TextField string value

* [MacOS] Support for multiple clicks in same selected item on NSTableView

* [MacOS] Support Focus on EntryRenderer

* [MacOS] Fix index bug on TablevIewDataSource

* [MacOS] Fix SelectedItem TableViewDataSource

* [Nuget] Add Mac to Maps nuspec

* [Nuget]Fix path

* [macOS] Fixed Tab NSImage crash in TabbedPageRenderer (#705)

* [macOS] Fixed Tab NSImage crash in TabbedPageRenderer

* Coding Style

* Coding Style

* [MacOS] Fix previous merge with master

* [MacOS] Possible simple fix for click on views overlapping

* [MacOS] Rename to IsOnViewCell

* [MacOS] Cleanup, Address feedback from Samantha’s review

1 files changed, 262 insertions, 0 deletions

diff --git a/Xamarin.Forms.Platform.MacOS/Platform.cs b/Xamarin.Forms.Platform.MacOS/Platform.cs
new file mode 100644
index 00000000..8629684b
--- /dev/null
+++ b/Xamarin.Forms.Platform.MacOS/Platform.cs
@@ -0,0 +1,262 @@
+using System;
+using AppKit;
+using RectangleF = CoreGraphics.CGRect;
+using System.Linq;
+
+namespace Xamarin.Forms.Platform.MacOS
+{
+	public class Platform : BindableObject, IPlatform, IDisposable
+	{
+		internal static readonly BindableProperty RendererProperty = BindableProperty.CreateAttached("Renderer",
+			typeof(IVisualElementRenderer), typeof(Platform), default(IVisualElementRenderer),
+			propertyChanged: (bindable, oldvalue, newvalue) =>
+			{
+				var view = bindable as VisualElement;
+				if (view != null)
+					view.IsPlatformEnabled = newvalue != null;
+			});
+
+		readonly PlatformRenderer PlatformRenderer;
+
+		bool _appeared;
+		bool _disposed;
+
+		internal static NativeToolbarTracker NativeToolbarTracker = new NativeToolbarTracker();
+
+		internal Platform()
+		{
+			PlatformRenderer = new PlatformRenderer(this);
+
+			MessagingCenter.Subscribe(this, Page.AlertSignalName, (Page sender, AlertArguments arguments) =>
+			{
+				var alert = NSAlert.WithMessage(arguments.Title, arguments.Cancel, arguments.Accept, null, arguments.Message);
+				var result = alert.RunModal();
+				arguments.SetResult(result == 1);
+			});
+
+			MessagingCenter.Subscribe(this, Page.ActionSheetSignalName, (Page sender, ActionSheetArguments arguments) =>
+			{
+				var alert = NSAlert.WithMessage(arguments.Title, arguments.Cancel, arguments.Destruction, null, "");
+				if (arguments.Buttons != null)
+				{
+					alert.AccessoryView = GetExtraButton(arguments);
+					alert.Layout();
+				}
+
+				var result = (int)alert.RunSheetModal(NSApplication.SharedApplication.MainWindow);
+				var titleResult = string.Empty;
+				if (result == 1)
+					titleResult = arguments.Cancel;
+				else if (result == 0)
+					titleResult = arguments.Destruction;
+				else if (result > 1 && arguments.Buttons != null && result - 2 <= arguments.Buttons.Count())
+					titleResult = arguments.Buttons.ElementAt(result - 2);
+
+				arguments.SetResult(titleResult);
+			});
+		}
+
+		SizeRequest IPlatform.GetNativeSize(VisualElement view, double widthConstraint, double heightConstraint)
+		{
+			var renderView = GetRenderer(view);
+			if (renderView == null || renderView.NativeView == null)
+				return new SizeRequest(Size.Zero);
+
+			return renderView.GetDesiredSize(widthConstraint, heightConstraint);
+		}
+
+		Page Page { get; set; }
+
+		Application TargetApplication
+		{
+			get
+			{
+				if (Page == null)
+					return null;
+				return Page.RealParent as Application;
+			}
+		}
+
+		void IDisposable.Dispose()
+		{
+			if (_disposed)
+				return;
+			_disposed = true;
+
+			Page.DescendantRemoved -= HandleChildRemoved;
+			MessagingCenter.Unsubscribe<Page, ActionSheetArguments>(this, Page.ActionSheetSignalName);
+			MessagingCenter.Unsubscribe<Page, AlertArguments>(this, Page.AlertSignalName);
+			MessagingCenter.Unsubscribe<Page, bool>(this, Page.BusySetSignalName);
+
+			DisposeModelAndChildrenRenderers(Page);
+			PlatformRenderer.Dispose();
+		}
+
+		public static IVisualElementRenderer CreateRenderer(VisualElement element)
+		{
+			var t = element.GetType();
+			var renderer = Registrar.Registered.GetHandler<IVisualElementRenderer>(t) ?? new DefaultRenderer();
+			renderer.SetElement(element);
+			return renderer;
+		}
+
+		public static IVisualElementRenderer GetRenderer(VisualElement bindable)
+		{
+			return (IVisualElementRenderer)bindable.GetValue(RendererProperty);
+		}
+
+		public static void SetRenderer(VisualElement bindable, IVisualElementRenderer value)
+		{
+			bindable.SetValue(RendererProperty, value);
+		}
+
+		protected override void OnBindingContextChanged()
+		{
+			SetInheritedBindingContext(Page, BindingContext);
+
+			base.OnBindingContextChanged();
+		}
+
+		internal NSViewController ViewController => PlatformRenderer;
+
+		internal static void DisposeModelAndChildrenRenderers(Element view)
+		{
+			IVisualElementRenderer renderer;
+			foreach (VisualElement child in view.Descendants())
+				DisposeModelAndChildrenRenderers(child);
+
+			renderer = GetRenderer((VisualElement)view);
+			if (renderer?.ViewController?.ParentViewController != null)
+				renderer?.ViewController?.RemoveFromParentViewController();
+
+			renderer?.NativeView?.RemoveFromSuperview();
+			renderer?.Dispose();
+
+			view.ClearValue(RendererProperty);
+		}
+
+		internal static void DisposeRendererAndChildren(IVisualElementRenderer rendererToRemove)
+		{
+			if (rendererToRemove == null || rendererToRemove.Element == null)
+				return;
+
+			if (GetRenderer(rendererToRemove.Element) == rendererToRemove)
+				rendererToRemove.Element.ClearValue(RendererProperty);
+
+			if (rendererToRemove.NativeView != null)
+			{
+				var subviews = rendererToRemove.NativeView.Subviews;
+				for (var i = 0; i < subviews.Length; i++)
+				{
+					var childRenderer = subviews[i] as IVisualElementRenderer;
+					if (childRenderer != null)
+						DisposeRendererAndChildren(childRenderer);
+				}
+
+				rendererToRemove.NativeView.RemoveFromSuperview();
+			}
+			rendererToRemove.Dispose();
+		}
+
+		internal void LayoutSubviews()
+		{
+			if (Page == null)
+				return;
+
+			var rootRenderer = GetRenderer(Page);
+
+			if (rootRenderer == null)
+				return;
+
+			rootRenderer.SetElementSize(new Size(PlatformRenderer.View.Bounds.Width, PlatformRenderer.View.Bounds.Height));
+		}
+
+		internal void SetPage(Page newRoot)
+		{
+			if (newRoot == null)
+				return;
+			if (Page != null)
+				throw new NotImplementedException();
+			Page = newRoot;
+
+			if (_appeared == false)
+				return;
+
+			Page.Platform = this;
+			AddChild(Page);
+
+			Page.DescendantRemoved += HandleChildRemoved;
+
+			TargetApplication.NavigationProxy.Inner = PlatformRenderer.Navigation;
+		}
+
+		internal void DidAppear()
+		{
+			PlatformRenderer.Navigation.AnimateModalPages = false;
+			TargetApplication.NavigationProxy.Inner = PlatformRenderer.Navigation;
+			PlatformRenderer.Navigation.AnimateModalPages = true;
+		}
+
+		internal void WillAppear()
+		{
+			if (_appeared)
+				return;
+
+			Page.Platform = this;
+			AddChild(Page);
+
+			Page.DescendantRemoved += HandleChildRemoved;
+
+			_appeared = true;
+		}
+
+		static NSView GetExtraButton(ActionSheetArguments arguments)
+		{
+			var newView = new NSView();
+			int height = 50;
+			int width = 300;
+			int i = 0;
+			foreach (var button in arguments.Buttons)
+			{
+				var btn = new NSButton { Title = button, Tag = i };
+				btn.SetButtonType(NSButtonType.MomentaryPushIn);
+				btn.Activated +=
+					(s, e) =>
+					{
+						NSApplication.SharedApplication.EndSheet(NSApplication.SharedApplication.MainWindow.AttachedSheet,
+							((NSButton)s).Tag + 2);
+					};
+				btn.Frame = new RectangleF(0, height * i, width, height);
+				newView.AddSubview(btn);
+				i++;
+			}
+			newView.Frame = new RectangleF(0, 0, width, height * i);
+			return newView;
+		}
+
+		void AddChild(VisualElement view)
+		{
+			if (!Application.IsApplicationOrNull(view.RealParent))
+				Console.Error.WriteLine("Tried to add parented view to canvas directly");
+
+			if (GetRenderer(view) == null)
+			{
+				var viewRenderer = CreateRenderer(view);
+				SetRenderer(view, viewRenderer);
+
+				PlatformRenderer.View.AddSubview(viewRenderer.NativeView);
+				if (viewRenderer.ViewController != null)
+					PlatformRenderer.AddChildViewController(viewRenderer.ViewController);
+				viewRenderer.SetElementSize(new Size(PlatformRenderer.View.Bounds.Width, PlatformRenderer.View.Bounds.Height));
+			}
+			else
+				Console.Error.WriteLine("A Renderer was already found, potential view double add");
+		}
+
+		void HandleChildRemoved(object sender, ElementEventArgs e)
+		{
+			var view = e.Element;
+			DisposeModelAndChildrenRenderers(view);
+		}
+	}
+}
\ No newline at end of file