/**
 * @file XTPWebViewProvider.h
 *
 * @copyright
 * (c) 1998-2025 Codejock Software, All Rights Reserved.
 *
 * This source file is the property of Codejock Software and must not be
 * redistributed by any means without the explicit written permission of
 * Codejock Software.
 *
 * The use of this source code is governed by the terms and conditions specified
 * in the Toolkit Pro license agreement. Codejock Software grants you, as a
 * single software developer, the limited right to use this software on one
 * computer only.
 *
 * Contact Information:
 * support@codejock.com
 * http://www.codejock.com
 *
 */

#if !defined(__XTPWEBVIEWPROVIDER_H__)
/** @cond */
#	define __XTPWEBVIEWPROVIDER_H__
/** @endcond */

#	if _MSC_VER >= 1000
#		pragma once
#	endif // _MSC_VER > 1000

#	include "Common/Base/Diagnostic/XTPDisableNoisyWarnings.h"

struct IXTPWebBrowserHost;
struct ICoreWebView2Controller;
struct ICoreWebView2;

// Use this macro for linking WebView2LoaderStatic.lib instead of linking WebView2Loader.dll
// dynamically.
// #define XTP_USE_WEBVIEW2_STATIC_LIB

/** @cond */
class CXTPWebViewProviderSpy;
/** @endcond */

/**
 * @brief
 * Implements WebView2 WebBrowser provider and gives access to WebView2 specific
 * functionality.
 */
class _XTP_EXT_CLASS CXTPWebViewProvider : public CXTPWebBrowserProvider
{
	/** @cond */
	DECLARE_DYNAMIC(CXTPWebViewProvider)
	/** @endcond */
	friend class CXTPWebViewProviderSpy;

public:
	/**
	 * @brief
	 * Constructs provider object.
	 * @param host The host control interface.
	 */
	CXTPWebViewProvider(IXTPWebBrowserHost& host);

	/**
	 * @brief
	 * Handles provider destruction.
	 */
	~CXTPWebViewProvider();

	/**
	 * @brief
	 * Determines if WebView2 implementation is available and can be used.
	 * @return
	 * TRUE if WebView2 implementation is available and can be used, otherwise FALSE.
	 */

	static BOOL IsAvailable();

	/**
	 * @brief
	 * Executes a JavaScript code.
	 * @param pText     Script code text.
	 * @param pvtResult The optional pointer to the variant object that is supposed to receive the
	 * result of the executed script.
	 * @return
	 * S_OK if script execution or its attempt are successful or an error code otherwise.
	 */
	virtual HRESULT ExecuteScript(LPCWSTR pText, CComVariant* pvtResult = NULL);

protected:
	/** @cond */
	// CXTPWebBrowserProvider overrides
	virtual HRESULT Initialize();
	virtual HRESULT Navigate(LPCTSTR pUrl);
	virtual HRESULT LoadHtml(LPCTSTR pHtml);
	virtual HRESULT WaitUntilReady();
	virtual void ReleaseBrowser();
	virtual BOOL OnHostWndMsg(UINT message, WPARAM wParam, LPARAM lParam, LRESULT* pResult);
	virtual void OnCreateBrowser(IUnknown* pObject);
	virtual void UpdateExternal();
	/** @endcond */

private:
	BOOL OnSize(UINT nType, int cx, int cy);
	BOOL OnDestroy();

protected:
	/** @cond */
	void ApplyUserAgent();
	void HookEvents();
	void UnhookEvents();
	void Layout();
	void SetPendingExternalReady();
	void OnExternalReady();

	void OnBeforeNavigationStarting(ICoreWebView2NavigationStartingEventArgs* args);
	void OnBeforeContentLoading(ICoreWebView2ContentLoadingEventArgs* args);
	void OnBeforeSourceChanged(ICoreWebView2SourceChangedEventArgs* args);
	void OnBeforeHistoryChanged(IUnknown* args);
	void OnBeforeNavigationCompleted(ICoreWebView2NavigationCompletedEventArgs* args);
	void OnBeforeFrameNavigationStarting(ICoreWebView2NavigationStartingEventArgs* args);
	void OnBeforeFrameNavigationCompleted(ICoreWebView2NavigationCompletedEventArgs* args);
	void OnBeforeScriptDialogOpening(ICoreWebView2ScriptDialogOpeningEventArgs* args);
	void OnBeforePermissionRequested(ICoreWebView2PermissionRequestedEventArgs* args);
	void OnBeforeProcessFailed(ICoreWebView2ProcessFailedEventArgs* args);
	void OnBeforeNewWindowRequested(ICoreWebView2NewWindowRequestedEventArgs* args);
	void OnBeforeDocumentTitleChanged(IUnknown* args);
	void OnBeforeContainsFullScreenElementChanged(IUnknown* args);
	void OnBeforeWebResourceRequested(ICoreWebView2WebResourceRequestedEventArgs* args);
	void OnBeforeWindowCloseRequested(IUnknown* args);

	void OnAfterNavigationStarting(ICoreWebView2NavigationStartingEventArgs* args);
	void OnAfterContentLoading(ICoreWebView2ContentLoadingEventArgs* args);
	void OnAfterSourceChanged(ICoreWebView2SourceChangedEventArgs* args);
	void OnAfterHistoryChanged(IUnknown* args);
	void OnAfterNavigationCompleted(ICoreWebView2NavigationCompletedEventArgs* args);
	void OnAfterFrameNavigationStarting(ICoreWebView2NavigationStartingEventArgs* args);
	void OnAfterFrameNavigationCompleted(ICoreWebView2NavigationCompletedEventArgs* args);
	void OnAfterScriptDialogOpening(ICoreWebView2ScriptDialogOpeningEventArgs* args);
	void OnAfterPermissionRequested(ICoreWebView2PermissionRequestedEventArgs* args);
	void OnAfterProcessFailed(ICoreWebView2ProcessFailedEventArgs* args);
	void OnAfterNewWindowRequested(ICoreWebView2NewWindowRequestedEventArgs* args);
	void OnAfterDocumentTitleChanged(IUnknown* args);
	void OnAfterContainsFullScreenElementChanged(IUnknown* args);
	void OnAfterWebResourceRequested(ICoreWebView2WebResourceRequestedEventArgs* args);
	void OnAfterWindowCloseRequested(IUnknown* args);
	/** @endcond */

private:
	CXTPWebViewProvider(const CXTPWebViewProvider&);
	CXTPWebViewProvider& operator=(const CXTPWebViewProvider&);

	static void StaticInit();

private:
#	ifndef XTP_USE_WEBVIEW2_STATIC_LIB
	static HMODULE m_hWebView2Loader;
#	endif

	typedef HRESULT(STDAPICALLTYPE* PFNGetAvailableCoreWebView2BrowserVersionString)(
		PCWSTR browserExecutableFolder, LPWSTR* versionInfo);
	static PFNGetAvailableCoreWebView2BrowserVersionString
		m_pfnGetAvailableCoreWebView2BrowserVersionString;

	typedef HRESULT(STDAPICALLTYPE* PFNCreateCoreWebView2EnvironmentWithOptions)(
		PCWSTR browserExecutableFolder, PCWSTR userDataFolder,
		ICoreWebView2EnvironmentOptions* environmentOptions,
		ICoreWebView2CreateCoreWebView2EnvironmentCompletedHandler* environmentCreatedHandler);
	static PFNCreateCoreWebView2EnvironmentWithOptions m_pfnCreateCoreWebView2EnvironmentWithOptions;

	ICoreWebView2* m_pWebView;
	ICoreWebView2Controller* m_pWebViewController;
	CComVariant* m_pvtScriptResult;
	BOOL m_bNavigationInitiated;
	BOOL m_bNavigationCompleted;
	BOOL m_bPendingExternalReady;
	CComVariant* m_pvtDummyResult;
	BOOL m_bControllerCreationHandled;
	DWORD m_dwUnusedPadding;

	struct
	{
		EventRegistrationToken NavigationStarting;
		EventRegistrationToken ContentLoading;
		EventRegistrationToken SourceChanged;
		EventRegistrationToken HistoryChanged;
		EventRegistrationToken NavigationCompleted;
		EventRegistrationToken FrameNavigationStarting;
		EventRegistrationToken FrameNavigationCompleted;
		EventRegistrationToken ScriptDialogOpening;
		EventRegistrationToken PermissionRequested;
		EventRegistrationToken ProcessFailed;
		EventRegistrationToken NewWindowRequested;
		EventRegistrationToken DocumentTitleChanged;
		EventRegistrationToken ContainsFullScreenElementChanged;
		EventRegistrationToken WebResourceRequested;
		EventRegistrationToken WindowCloseRequested;
	} m_eventTokens;
};

#	include "Common/Base/Diagnostic/XTPEnableNoisyWarnings.h"
/** @cond */
#endif
/** @endcond */