BrowserUI.h

#ifndef CEF_INCLUDE_BWUI_H_
#define CEF_INCLUDE_BWUI_H_
#pragma once

#include <windows.h>
#include <shlwapi.h>
#include <string>

// browser interface
namespace bw { class WebView; };
typedef bw::WebView* bwWebView;

struct url_intercept_result {
	CHAR* data;
	size_t length;
	int status_code;
	CHAR* status_text;
	CHAR mime[92]={0};
	bool delete_internal=false;
};

typedef void (__cdecl* BC_BrowserCallback)(bwWebView);

typedef url_intercept_result* (__cdecl * BC_URLInterceptor)(const char*, const url_intercept_result*);

typedef bool (__cdecl * BC_SETFOCUS)(bwWebView);

typedef bool (__cdecl * BC_SHOULDCLOSE)(bwWebView);

struct BWCreateOptions{
	HWND hParent=0;
	const CHAR* URL=nullptr;
	BC_BrowserCallback bwCallback=0;
	BC_URLInterceptor bwInterceptor=0;
	BC_SETFOCUS bcSetFocus=nullptr;
	BC_SHOULDCLOSE bcShouldClose=nullptr;
	const CHAR* content=nullptr;
};


enum ValueType{
	typeInt=0,
	typeString,
	typeBool,
	typeDouble,
};

struct BJSCV {
	ValueType value_type;
	int intVal;
	const char* charVal; // when returned from bwParseCefV8Args, it is TCHAR*
	bool boolVal=0;
	double doubleVal=0;
	bool delete_internal=false;
	LONG_PTR charValPtr=0;
};

typedef void* (__cdecl* BW_WINDOWMODE)(HINSTANCE, bool);

typedef int (__cdecl* BW_CREATEBROWSER)(BWCreateOptions);

typedef HWND (__cdecl* BW_GETHWNDFORBROWSER)(bwWebView);

typedef char* (__cdecl* BW_GETSTRING)(LONG_PTR);

typedef void* (__cdecl* BW_RELEASESTRING)(LONG_PTR);

typedef void* (__cdecl* BW_LOADSTRDATA)(bwWebView, const CHAR*, const CHAR*, size_t);

typedef void* (__cdecl* BW_LOADURL)(bwWebView, const CHAR*);

typedef BJSCV* (__cdecl* BJSC_EXECUTION)(LONG_PTR, int, LONG_PTR, int);

typedef BJSCV* (__cdecl* BW_INSTALLJSNATIVETOWIDGET)(bwWebView, const char *, BJSC_EXECUTION);

typedef char* (__cdecl* BW_PARSECEFV8ARGS)(LONG_PTR, int&, bool);

typedef TCHAR* (__cdecl* BW_GETURL)(bwWebView);

typedef void* (__cdecl* BW_EXECUTEJAVASCRIPT)(bwWebView, CHAR*);

typedef void* (__cdecl* BW_CANGOBACK)(bwWebView);

typedef void (__cdecl* BW_GOBACK)(bwWebView);

typedef void* (__cdecl* BW_CANGOFORWARD)(bwWebView);

typedef void (__cdecl* BW_GOFORWARD)(bwWebView);

typedef void (__cdecl* BW_DESTROYWEBVIEW)(bwWebView, bool);

typedef double (__cdecl* BW_GETZOOMLEVEL)(bwWebView);

typedef void (__cdecl* BW_SETZOOMLEVEL)(bwWebView, double);

typedef void (__cdecl* BW_ZOOMLEVELDELTA)(bwWebView, double);

typedef void (__cdecl* BW_SHOWDEVTOOLS)(bwWebView);

__declspec(selectany) /*static*/ BW_WINDOWMODE bwWindowMode = nullptr;
				    
__declspec(selectany) /*static*/ BW_CREATEBROWSER bwCreateBrowser = nullptr;
				    
__declspec(selectany) /*static*/ BW_GETHWNDFORBROWSER bwGetHWNDForBrowser = nullptr;
				    
__declspec(selectany) /*static*/ BW_LOADSTRDATA bwLoadStrData = nullptr;

__declspec(selectany) /*static*/ BW_LOADURL bwLoadUrl = nullptr;

__declspec(selectany) /*static*/ BW_GETSTRING bwGetString = nullptr;

__declspec(selectany) /*static*/ BW_RELEASESTRING bwReleaseString = nullptr;
				    
__declspec(selectany) /*static*/ BW_INSTALLJSNATIVETOWIDGET bwInstallJsNativeToWidget = nullptr;
				    
__declspec(selectany) /*static*/ BW_PARSECEFV8ARGS bwParseCefV8Args = nullptr;
				    
__declspec(selectany) /*static*/ BW_GETURL bwGetUrl = nullptr;
				    
__declspec(selectany) /*static*/ BW_EXECUTEJAVASCRIPT bwExecuteJavaScript = nullptr;
				    
__declspec(selectany) /*static*/ BW_CANGOBACK bwCanGoBack = nullptr;
				    
__declspec(selectany) /*static*/ BW_GOBACK bwRefresh = nullptr;

__declspec(selectany) /*static*/ BW_GOBACK bwGoBack = nullptr;
				    
__declspec(selectany) /*static*/ BW_CANGOFORWARD bwCanGoForward = nullptr;
				    
__declspec(selectany) /*static*/ BW_GOFORWARD bwGoForward = nullptr;

__declspec(selectany) /*static*/ BW_DESTROYWEBVIEW bwDestroyWebview = nullptr;

__declspec(selectany) /*static*/ BW_GETZOOMLEVEL bwGetZoomLevel = nullptr;

__declspec(selectany) /*static*/ BW_SETZOOMLEVEL bwSetZoomLevel = nullptr;

__declspec(selectany) /*static*/ BW_ZOOMLEVELDELTA bwZoomLevelDelta = nullptr;

__declspec(selectany) /*static*/ BW_SHOWDEVTOOLS bwShowDevTools = nullptr;

// load module
static void PRINTMSG(TCHAR* buff, const CHAR* name, int & printed_len)
{
	int i=0, len=(int)strlen(name);
	if(printed_len+len+6<74)
	{
		for(;i<len;i++) 
		{
			buff[printed_len+i]=name[i];
		}
		buff[printed_len+i]=' ';
		printed_len+=len+1;
	}
	else if(printed_len<74)
	{
		buff[++printed_len]='.';
	}
}

#define DEF_FUNC(hMod, func, type, name)\
	func = (type)GetProcAddress(hMod, name);\
	if(!func) PRINTMSG(PRINTBUFF, name, PRINTLEN);

static bool bwInit(TCHAR* LibBwgtPath)
{
	if(PathFileExists(LibBwgtPath))
	{
		const DWORD dwFlags = GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")), "AddDllDirectory") != NULL ? LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR | LOAD_LIBRARY_SEARCH_DEFAULT_DIRS : 0;
		auto hLibBwgt = ::LoadLibraryEx(LibBwgtPath, NULL, dwFlags);
		if(hLibBwgt) 
		{
			TCHAR PRINTBUFF[75]=L"bw api not found : ";
			int PRINTLEN=lstrlen(PRINTBUFF);
			int PRINTLEN_0=PRINTLEN;
			DEF_FUNC(hLibBwgt, bwWindowMode, BW_WINDOWMODE, "RunMain");
			DEF_FUNC(hLibBwgt, bwCreateBrowser, BW_CREATEBROWSER, "bwCreateBrowser");
			DEF_FUNC(hLibBwgt, bwGetHWNDForBrowser, BW_GETHWNDFORBROWSER, "bwGetHWNDForBrowser");
			DEF_FUNC(hLibBwgt, bwLoadStrData, BW_LOADSTRDATA, "bwLoadStrData");
			DEF_FUNC(hLibBwgt, bwLoadUrl, BW_LOADURL, "bwLoadUrl");
			DEF_FUNC(hLibBwgt, bwGetString, BW_GETSTRING, "bwGetString");
			DEF_FUNC(hLibBwgt, bwReleaseString, BW_RELEASESTRING, "bwReleaseString");
			DEF_FUNC(hLibBwgt, bwInstallJsNativeToWidget, BW_INSTALLJSNATIVETOWIDGET, "bwInstallJsNativeToWidget");
			DEF_FUNC(hLibBwgt, bwParseCefV8Args, BW_PARSECEFV8ARGS, "bwParseCefV8Args");
			DEF_FUNC(hLibBwgt, bwGetUrl, BW_GETURL, "bwGetUrl");
			DEF_FUNC(hLibBwgt, bwExecuteJavaScript, BW_EXECUTEJAVASCRIPT, "bwExecuteJavaScript");
			DEF_FUNC(hLibBwgt, bwCanGoBack, BW_CANGOBACK, "bwCanGoBack");
			DEF_FUNC(hLibBwgt, bwRefresh, BW_GOBACK, "bwRefresh");
			DEF_FUNC(hLibBwgt, bwGoBack, BW_GOBACK, "bwGoBack");
			DEF_FUNC(hLibBwgt, bwCanGoForward, BW_CANGOFORWARD, "bwCanGoForward");
			DEF_FUNC(hLibBwgt, bwGoForward, BW_GOFORWARD, "bwGoForward");
			DEF_FUNC(hLibBwgt, bwDestroyWebview, BW_DESTROYWEBVIEW, "bwDestroyWebview");
			DEF_FUNC(hLibBwgt, bwGetZoomLevel, BW_GETZOOMLEVEL, "bwGetZoomLevel");
			DEF_FUNC(hLibBwgt, bwSetZoomLevel, BW_SETZOOMLEVEL, "bwSetZoomLevel");
			DEF_FUNC(hLibBwgt, bwZoomLevelDelta, BW_ZOOMLEVELDELTA, "bwZoomLevelDelta");
			DEF_FUNC(hLibBwgt, bwShowDevTools, BW_SHOWDEVTOOLS, "bwShowDevTools");
			if(PRINTLEN!=PRINTLEN_0)
			{
				PRINTBUFF[PRINTLEN]='\0';
				::MessageBox(NULL, PRINTBUFF, TEXT("BrowserWidget"), MB_OK);
			}
			return bwCreateBrowser!=0;
		}
	}
	return 0;
}
#endif