f4334277
 Hu Chunming
提交3rdparty
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//*********************************************************
//
// Copyright (c) Microsoft. All rights reserved.
// THIS CODE IS PROVIDED *AS IS* WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY
// IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
// PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.
//
//*********************************************************
#pragma once
#include <collection.h>
namespace SDKSample
{
namespace Common
{
/// <summary>
/// Typical implementation of Page that provides several important conveniences:
/// <list type="bullet">
/// <item>
/// <description>Application view state to visual state mapping</description>
/// </item>
/// <item>
/// <description>GoBack, GoForward, and GoHome event handlers</description>
/// </item>
/// <item>
/// <description>Mouse and keyboard shortcuts for navigation</description>
/// </item>
/// <item>
/// <description>State management for navigation and process lifetime management</description>
/// </item>
/// <item>
/// <description>A default view model</description>
/// </item>
/// </list>
/// </summary>
[Windows::Foundation::Metadata::WebHostHidden]
public ref class LayoutAwarePage : Windows::UI::Xaml::Controls::Page
{
internal:
LayoutAwarePage();
public:
void StartLayoutUpdates(Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
void StopLayoutUpdates(Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
void InvalidateVisualState();
static property Windows::UI::Xaml::DependencyProperty^ DefaultViewModelProperty
{
Windows::UI::Xaml::DependencyProperty^ get();
};
property Windows::Foundation::Collections::IObservableMap<Platform::String^, Platform::Object^>^ DefaultViewModel
{
Windows::Foundation::Collections::IObservableMap<Platform::String^, Platform::Object^>^ get();
void set(Windows::Foundation::Collections::IObservableMap<Platform::String^, Platform::Object^>^ value);
}
protected:
virtual void GoHome(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
virtual void GoBack(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
virtual void GoForward(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
virtual Platform::String^ DetermineVisualState(Windows::UI::ViewManagement::ApplicationViewState viewState);
virtual void OnNavigatedTo(Windows::UI::Xaml::Navigation::NavigationEventArgs^ e) override;
virtual void OnNavigatedFrom(Windows::UI::Xaml::Navigation::NavigationEventArgs^ e) override;
virtual void LoadState(Platform::Object^ navigationParameter,
Windows::Foundation::Collections::IMap<Platform::String^, Platform::Object^>^ pageState);
virtual void SaveState(Windows::Foundation::Collections::IMap<Platform::String^, Platform::Object^>^ pageState);
private:
Platform::String^ _pageKey;
bool _navigationShortcutsRegistered;
Platform::Collections::Map<Platform::String^, Platform::Object^>^ _defaultViewModel;
Windows::Foundation::EventRegistrationToken _windowSizeEventToken,
_acceleratorKeyEventToken, _pointerPressedEventToken;
Platform::Collections::Vector<Windows::UI::Xaml::Controls::Control^>^ _layoutAwareControls;
void WindowSizeChanged(Platform::Object^ sender, Windows::UI::Core::WindowSizeChangedEventArgs^ e);
void OnLoaded(Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
void OnUnloaded(Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
void CoreDispatcher_AcceleratorKeyActivated(Windows::UI::Core::CoreDispatcher^ sender,
Windows::UI::Core::AcceleratorKeyEventArgs^ args);
void CoreWindow_PointerPressed(Windows::UI::Core::CoreWindow^ sender,
Windows::UI::Core::PointerEventArgs^ args);
LayoutAwarePage^ _this; // Strong reference to self, cleaned up in OnUnload
};
}
}
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