// Copyright (c) 2013 The Chromium Embedded Framework Authors. All rights // reserved. Use of this source code is governed by a BSD-style license that // can be found in the LICENSE file. #include "cefclient/cefclient.h" #include #include #include #include #include #include #include "include/cef_app.h" #include "include/cef_browser.h" #include "include/cef_frame.h" #include "include/cef_runnable.h" #include "include/cef_sandbox_win.h" #include "cefclient/cefclient_osr_widget_win.h" #include "cefclient/client_handler.h" #include "cefclient/client_switches.h" #include "cefclient/resource.h" #include "cefclient/scheme_test.h" #include "cefclient/string_util.h" // Set to 0 to disable sandbox support. #define CEF_ENABLE_SANDBOX 1 #if CEF_ENABLE_SANDBOX // The cef_sandbox.lib static library is currently built with VS2010. It may not // link successfully with other VS versions. #pragma comment(lib, "cef_sandbox.lib") #endif #define MAX_LOADSTRING 100 #define MAX_URL_LENGTH 255 #define BUTTON_WIDTH 72 #define URLBAR_HEIGHT 24 // Global Variables: HINSTANCE hInst; // current instance TCHAR szTitle[MAX_LOADSTRING]; // The title bar text TCHAR szWindowClass[MAX_LOADSTRING]; // the main window class name TCHAR szOSRWindowClass[MAX_LOADSTRING]; // the OSR window class name char szWorkingDir[MAX_PATH]; // The current working directory UINT uFindMsg; // Message identifier for find events. HWND hFindDlg = NULL; // Handle for the find dialog. // Forward declarations of functions included in this code module: ATOM MyRegisterClass(HINSTANCE hInstance); BOOL InitInstance(HINSTANCE, int); LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM); // Used for processing messages on the main application thread while running // in multi-threaded message loop mode. HWND hMessageWnd = NULL; HWND CreateMessageWindow(HINSTANCE hInstance); LRESULT CALLBACK MessageWndProc(HWND, UINT, WPARAM, LPARAM); // The global ClientHandler reference. extern CefRefPtr g_handler; class MainBrowserProvider : public OSRBrowserProvider { virtual CefRefPtr GetBrowser() { if (g_handler.get()) return g_handler->GetBrowser(); return NULL; } } g_main_browser_provider; // Program entry point function. int APIENTRY wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow) { UNREFERENCED_PARAMETER(hPrevInstance); UNREFERENCED_PARAMETER(lpCmdLine); void* sandbox_info = NULL; #if CEF_ENABLE_SANDBOX // Manage the life span of the sandbox information object. This is necessary // for sandbox support on Windows. See cef_sandbox_win.h for complete details. CefScopedSandboxInfo scoped_sandbox; sandbox_info = scoped_sandbox.sandbox_info(); #endif CefMainArgs main_args(hInstance); CefRefPtr app(new ClientApp); // Execute the secondary process, if any. int exit_code = CefExecuteProcess(main_args, app.get(), sandbox_info); if (exit_code >= 0) return exit_code; // Retrieve the current working directory. if (_getcwd(szWorkingDir, MAX_PATH) == NULL) szWorkingDir[0] = 0; // Parse command line arguments. The passed in values are ignored on Windows. AppInitCommandLine(0, NULL); CefSettings settings; #if !CEF_ENABLE_SANDBOX settings.no_sandbox = true; #endif // Populate the settings based on command line arguments. AppGetSettings(settings); // Initialize CEF. CefInitialize(main_args, settings, app.get(), sandbox_info); // Register the scheme handler. scheme_test::InitTest(); HACCEL hAccelTable; // Initialize global strings LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING); LoadString(hInstance, IDC_CEFCLIENT, szWindowClass, MAX_LOADSTRING); LoadString(hInstance, IDS_OSR_WIDGET_CLASS, szOSRWindowClass, MAX_LOADSTRING); MyRegisterClass(hInstance); // Perform application initialization if (!InitInstance (hInstance, nCmdShow)) return FALSE; hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_CEFCLIENT)); // Register the find event message. uFindMsg = RegisterWindowMessage(FINDMSGSTRING); int result = 0; if (!settings.multi_threaded_message_loop) { // Run the CEF message loop. This function will block until the application // recieves a WM_QUIT message. CefRunMessageLoop(); } else { // Create a hidden window for message processing. hMessageWnd = CreateMessageWindow(hInstance); ASSERT(hMessageWnd); MSG msg; // Run the application message loop. while (GetMessage(&msg, NULL, 0, 0)) { // Allow processing of find dialog messages. if (hFindDlg && IsDialogMessage(hFindDlg, &msg)) continue; if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) { TranslateMessage(&msg); DispatchMessage(&msg); } } DestroyWindow(hMessageWnd); hMessageWnd = NULL; result = static_cast(msg.wParam); } // Shut down CEF. CefShutdown(); return result; } // // FUNCTION: MyRegisterClass() // // PURPOSE: Registers the window class. // // COMMENTS: // // This function and its usage are only necessary if you want this code // to be compatible with Win32 systems prior to the 'RegisterClassEx' // function that was added to Windows 95. It is important to call this // function so that the application will get 'well formed' small icons // associated with it. // ATOM MyRegisterClass(HINSTANCE hInstance) { WNDCLASSEX wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = CS_HREDRAW | CS_VREDRAW; wcex.lpfnWndProc = WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = hInstance; wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_CEFCLIENT)); wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName = MAKEINTRESOURCE(IDC_CEFCLIENT); wcex.lpszClassName = szWindowClass; wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL)); return RegisterClassEx(&wcex); } // // FUNCTION: InitInstance(HINSTANCE, int) // // PURPOSE: Saves instance handle and creates main window // // COMMENTS: // // In this function, we save the instance handle in a global variable and // create and display the main program window. // BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) { HWND hWnd; hInst = hInstance; // Store instance handle in our global variable hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL); if (!hWnd) return FALSE; ShowWindow(hWnd, nCmdShow); UpdateWindow(hWnd); return TRUE; } // Change the zoom factor on the UI thread. static void ModifyZoom(CefRefPtr browser, double delta) { if (CefCurrentlyOn(TID_UI)) { browser->GetHost()->SetZoomLevel( browser->GetHost()->GetZoomLevel() + delta); } else { CefPostTask(TID_UI, NewCefRunnableFunction(ModifyZoom, browser, delta)); } } // // FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM) // // PURPOSE: Processes messages for the main window. // LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { static HWND backWnd = NULL, forwardWnd = NULL, reloadWnd = NULL, stopWnd = NULL, editWnd = NULL; static WNDPROC editWndOldProc = NULL; // Static members used for the find dialog. static FINDREPLACE fr; static WCHAR szFindWhat[80] = {0}; static WCHAR szLastFindWhat[80] = {0}; static bool findNext = false; static bool lastMatchCase = false; int wmId, wmEvent; PAINTSTRUCT ps; HDC hdc; if (hWnd == editWnd) { // Callback for the edit window switch (message) { case WM_CHAR: if (wParam == VK_RETURN && g_handler.get()) { // When the user hits the enter key load the URL CefRefPtr browser = g_handler->GetBrowser(); wchar_t strPtr[MAX_URL_LENGTH+1] = {0}; *((LPWORD)strPtr) = MAX_URL_LENGTH; LRESULT strLen = SendMessage(hWnd, EM_GETLINE, 0, (LPARAM)strPtr); if (strLen > 0) { strPtr[strLen] = 0; browser->GetMainFrame()->LoadURL(strPtr); } return 0; } } return (LRESULT)CallWindowProc(editWndOldProc, hWnd, message, wParam, lParam); } else if (message == uFindMsg) { // Find event. LPFINDREPLACE lpfr = (LPFINDREPLACE)lParam; if (lpfr->Flags & FR_DIALOGTERM) { // The find dialog box has been dismissed so invalidate the handle and // reset the search results. hFindDlg = NULL; if (g_handler.get()) { g_handler->GetBrowser()->GetHost()->StopFinding(true); szLastFindWhat[0] = 0; findNext = false; } return 0; } if ((lpfr->Flags & FR_FINDNEXT) && g_handler.get()) { // Search for the requested string. bool matchCase = (lpfr->Flags & FR_MATCHCASE?true:false); if (matchCase != lastMatchCase || (matchCase && wcsncmp(szFindWhat, szLastFindWhat, sizeof(szLastFindWhat)/sizeof(WCHAR)) != 0) || (!matchCase && _wcsnicmp(szFindWhat, szLastFindWhat, sizeof(szLastFindWhat)/sizeof(WCHAR)) != 0)) { // The search string has changed, so reset the search results. if (szLastFindWhat[0] != 0) { g_handler->GetBrowser()->GetHost()->StopFinding(true); findNext = false; } lastMatchCase = matchCase; wcscpy_s(szLastFindWhat, sizeof(szLastFindWhat)/sizeof(WCHAR), szFindWhat); } g_handler->GetBrowser()->GetHost()->Find(0, lpfr->lpstrFindWhat, (lpfr->Flags & FR_DOWN)?true:false, matchCase, findNext); if (!findNext) findNext = true; } return 0; } else { // Callback for the main window switch (message) { case WM_CREATE: { // Create the single static handler class instance g_handler = new ClientHandler(); g_handler->SetMainHwnd(hWnd); // Create the child windows used for navigation RECT rect; int x = 0; GetClientRect(hWnd, &rect); backWnd = CreateWindow(L"BUTTON", L"Back", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON | WS_DISABLED, x, 0, BUTTON_WIDTH, URLBAR_HEIGHT, hWnd, (HMENU) IDC_NAV_BACK, hInst, 0); x += BUTTON_WIDTH; forwardWnd = CreateWindow(L"BUTTON", L"Forward", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON | WS_DISABLED, x, 0, BUTTON_WIDTH, URLBAR_HEIGHT, hWnd, (HMENU) IDC_NAV_FORWARD, hInst, 0); x += BUTTON_WIDTH; reloadWnd = CreateWindow(L"BUTTON", L"Reload", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON | WS_DISABLED, x, 0, BUTTON_WIDTH, URLBAR_HEIGHT, hWnd, (HMENU) IDC_NAV_RELOAD, hInst, 0); x += BUTTON_WIDTH; stopWnd = CreateWindow(L"BUTTON", L"Stop", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON | WS_DISABLED, x, 0, BUTTON_WIDTH, URLBAR_HEIGHT, hWnd, (HMENU) IDC_NAV_STOP, hInst, 0); x += BUTTON_WIDTH; editWnd = CreateWindow(L"EDIT", 0, WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT | ES_AUTOVSCROLL | ES_AUTOHSCROLL| WS_DISABLED, x, 0, rect.right - BUTTON_WIDTH * 4, URLBAR_HEIGHT, hWnd, 0, hInst, 0); // Assign the edit window's WNDPROC to this function so that we can // capture the enter key editWndOldProc = reinterpret_cast(GetWindowLongPtr(editWnd, GWLP_WNDPROC)); SetWindowLongPtr(editWnd, GWLP_WNDPROC, reinterpret_cast(WndProc)); g_handler->SetEditHwnd(editWnd); g_handler->SetButtonHwnds(backWnd, forwardWnd, reloadWnd, stopWnd); rect.top += URLBAR_HEIGHT; CefWindowInfo info; CefBrowserSettings settings; if (AppIsOffScreenRenderingEnabled()) { CefRefPtr cmd_line = AppGetCommandLine(); bool transparent = cmd_line->HasSwitch(cefclient::kTransparentPaintingEnabled); CefRefPtr osr_window = OSRWindow::Create(&g_main_browser_provider, transparent); osr_window->CreateWidget(hWnd, rect, hInst, szOSRWindowClass); info.SetAsWindowless(osr_window->hwnd(), transparent); g_handler->SetOSRHandler(osr_window.get()); } else { // Initialize window info to the defaults for a child window. info.SetAsChild(hWnd, rect); } // Creat the new child browser window CefBrowserHost::CreateBrowser(info, g_handler.get(), g_handler->GetStartupURL(), settings, NULL); return 0; } case WM_COMMAND: { CefRefPtr browser; if (g_handler.get()) browser = g_handler->GetBrowser(); wmId = LOWORD(wParam); wmEvent = HIWORD(wParam); // Parse the menu selections: switch (wmId) { case IDM_ABOUT: DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About); return 0; case IDM_EXIT: if (g_handler.get()) g_handler->CloseAllBrowsers(false); return 0; case ID_WARN_CONSOLEMESSAGE: if (g_handler.get()) { std::wstringstream ss; ss << L"Console messages will be written to " << std::wstring(CefString(g_handler->GetLogFile())); MessageBox(hWnd, ss.str().c_str(), L"Console Messages", MB_OK | MB_ICONINFORMATION); } return 0; case ID_WARN_DOWNLOADCOMPLETE: case ID_WARN_DOWNLOADERROR: if (g_handler.get()) { std::wstringstream ss; ss << L"File \"" << std::wstring(CefString(g_handler->GetLastDownloadFile())) << L"\" "; if (wmId == ID_WARN_DOWNLOADCOMPLETE) ss << L"downloaded successfully."; else ss << L"failed to download."; MessageBox(hWnd, ss.str().c_str(), L"File Download", MB_OK | MB_ICONINFORMATION); } return 0; case ID_FIND: if (!hFindDlg) { // Create the find dialog. ZeroMemory(&fr, sizeof(fr)); fr.lStructSize = sizeof(fr); fr.hwndOwner = hWnd; fr.lpstrFindWhat = szFindWhat; fr.wFindWhatLen = sizeof(szFindWhat); fr.Flags = FR_HIDEWHOLEWORD | FR_DOWN; hFindDlg = FindText(&fr); } else { // Give focus to the existing find dialog. ::SetFocus(hFindDlg); } return 0; case IDC_NAV_BACK: // Back button if (browser.get()) browser->GoBack(); return 0; case IDC_NAV_FORWARD: // Forward button if (browser.get()) browser->GoForward(); return 0; case IDC_NAV_RELOAD: // Reload button if (browser.get()) browser->Reload(); return 0; case IDC_NAV_STOP: // Stop button if (browser.get()) browser->StopLoad(); return 0; case ID_TESTS_GETSOURCE: // Test the GetSource function if (browser.get()) RunGetSourceTest(browser); return 0; case ID_TESTS_GETTEXT: // Test the GetText function if (browser.get()) RunGetTextTest(browser); return 0; case ID_TESTS_POPUP: // Test a popup window if (browser.get()) RunPopupTest(browser); return 0; case ID_TESTS_REQUEST: // Test a request if (browser.get()) RunRequestTest(browser); return 0; case ID_TESTS_PLUGIN_INFO: // Test plugin info if (browser.get()) RunPluginInfoTest(browser); return 0; case ID_TESTS_ZOOM_IN: if (browser.get()) ModifyZoom(browser, 0.5); return 0; case ID_TESTS_ZOOM_OUT: if (browser.get()) ModifyZoom(browser, -0.5); return 0; case ID_TESTS_ZOOM_RESET: if (browser.get()) browser->GetHost()->SetZoomLevel(0.0); return 0; case ID_TESTS_TRACING_BEGIN: g_handler->BeginTracing(); return 0; case ID_TESTS_TRACING_END: g_handler->EndTracing(); return 0; case ID_TESTS_PRINT: if(browser.get()) browser->GetHost()->Print(); return 0; case ID_TESTS_OTHER_TESTS: if (browser.get()) RunOtherTests(browser); return 0; } break; } case WM_PAINT: hdc = BeginPaint(hWnd, &ps); EndPaint(hWnd, &ps); return 0; case WM_SETFOCUS: if (g_handler.get() && g_handler->GetBrowser()) { if (AppIsOffScreenRenderingEnabled()) { // Give focus to the OSR window. CefRefPtr osr_window = static_cast(g_handler->GetOSRHandler().get()); if (osr_window) ::SetFocus(osr_window->hwnd()); } else { // Give focus to the browser. g_handler->GetBrowser()->GetHost()->SetFocus(true); } } return 0; case WM_SIZE: // Minimizing resizes the window to 0x0 which causes our layout to go all // screwy, so we just ignore it. if (wParam != SIZE_MINIMIZED && g_handler.get() && g_handler->GetBrowser()) { CefWindowHandle hwnd = g_handler->GetBrowser()->GetHost()->GetWindowHandle(); if (hwnd) { // Resize the browser window and address bar to match the new frame // window size RECT rect; GetClientRect(hWnd, &rect); rect.top += URLBAR_HEIGHT; int urloffset = rect.left + BUTTON_WIDTH * 4; HDWP hdwp = BeginDeferWindowPos(1); hdwp = DeferWindowPos(hdwp, editWnd, NULL, urloffset, 0, rect.right - urloffset, URLBAR_HEIGHT, SWP_NOZORDER); hdwp = DeferWindowPos(hdwp, hwnd, NULL, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, SWP_NOZORDER); EndDeferWindowPos(hdwp); } } break; case WM_ERASEBKGND: if (g_handler.get() && g_handler->GetBrowser()) { CefWindowHandle hwnd = g_handler->GetBrowser()->GetHost()->GetWindowHandle(); if (hwnd) { // Dont erase the background if the browser window has been loaded // (this avoids flashing) return 0; } } break; case WM_ENTERMENULOOP: if (!wParam) { // Entering the menu loop for the application menu. CefSetOSModalLoop(true); } break; case WM_EXITMENULOOP: if (!wParam) { // Exiting the menu loop for the application menu. CefSetOSModalLoop(false); } break; case WM_CLOSE: if (g_handler.get() && !g_handler->IsClosing()) { CefRefPtr browser = g_handler->GetBrowser(); if (browser.get()) { // Notify the browser window that we would like to close it. This // will result in a call to ClientHandler::DoClose() if the // JavaScript 'onbeforeunload' event handler allows it. browser->GetHost()->CloseBrowser(false); // Cancel the close. return 0; } } // Allow the close. break; case WM_DESTROY: // Quitting CEF is handled in ClientHandler::OnBeforeClose(). return 0; } return DefWindowProc(hWnd, message, wParam, lParam); } } // Message handler for about box. INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) { UNREFERENCED_PARAMETER(lParam); switch (message) { case WM_INITDIALOG: return (INT_PTR)TRUE; case WM_COMMAND: if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) { EndDialog(hDlg, LOWORD(wParam)); return (INT_PTR)TRUE; } break; } return (INT_PTR)FALSE; } HWND CreateMessageWindow(HINSTANCE hInstance) { static const wchar_t kWndClass[] = L"ClientMessageWindow"; WNDCLASSEX wc = {0}; wc.cbSize = sizeof(wc); wc.lpfnWndProc = MessageWndProc; wc.hInstance = hInstance; wc.lpszClassName = kWndClass; RegisterClassEx(&wc); return CreateWindow(kWndClass, 0, 0, 0, 0, 0, 0, HWND_MESSAGE, 0, hInstance, 0); } LRESULT CALLBACK MessageWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) { case WM_COMMAND: { int wmId = LOWORD(wParam); switch (wmId) { case ID_QUIT: PostQuitMessage(0); return 0; } } } return DefWindowProc(hWnd, message, wParam, lParam); } // Global functions std::string AppGetWorkingDirectory() { return szWorkingDir; } void AppQuitMessageLoop() { CefRefPtr command_line = AppGetCommandLine(); if (command_line->HasSwitch(cefclient::kMultiThreadedMessageLoop)) { // Running in multi-threaded message loop mode. Need to execute // PostQuitMessage on the main application thread. ASSERT(hMessageWnd); PostMessage(hMessageWnd, WM_COMMAND, ID_QUIT, 0); } else { CefQuitMessageLoop(); } }