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cef/tests/cefclient/cefclient_win.cc

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// 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 <windows.h>
#include <commdlg.h>
#include <shellapi.h>
#include <direct.h>
#include <shlobj.h>
#include <sstream>
#include <string>
#include "include/base/cef_bind.h"
#include "include/cef_app.h"
#include "include/cef_browser.h"
#include "include/cef_frame.h"
#include "include/cef_sandbox_win.h"
#include "include/wrapper/cef_closure_task.h"
#include "cefclient/client_app.h"
#include "cefclient/client_handler_shared.h"
#include "cefclient/client_switches.h"
#include "cefclient/main_context_impl.h"
#include "cefclient/main_message_loop_multithreaded_win.h"
#include "cefclient/main_message_loop_std.h"
#include "cefclient/osr_widget_win.h"
#include "cefclient/resource.h"
#include "cefclient/test_runner.h"
#include "cefclient/util_win.h"
// When generating projects with CMake the CEF_USE_SANDBOX value will be defined
// automatically if using the required compiler version. Pass -DUSE_SANDBOX=OFF
// to the CMake command-line to disable use of the sandbox.
// Uncomment this line to manually enable sandbox support.
// #define CEF_USE_SANDBOX 1
#if defined(CEF_USE_SANDBOX)
// The cef_sandbox.lib static library is currently built with VS2013. It may not
// link successfully with other VS versions.
#pragma comment(lib, "cef_sandbox.lib")
#endif
namespace client {
namespace {
#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
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 RegisterMainClass(HINSTANCE hInstance);
BOOL CreateMainWindow(HINSTANCE, int);
LRESULT CALLBACK MainWndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK FindWndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK AboutWndProc(HWND, UINT, WPARAM, LPARAM);
// The global ClientHandlerShared reference.
CefRefPtr<ClientHandlerShared> g_handler;
// Used by off-screen rendering to find the associated CefBrowser.
class MainBrowserProvider : public OSRBrowserProvider {
virtual CefRefPtr<CefBrowser> GetBrowser() {
if (g_handler.get())
return g_handler->GetBrowser();
return NULL;
}
} g_main_browser_provider;
int RunMain(HINSTANCE hInstance, int nCmdShow) {
void* sandbox_info = NULL;
#if defined(CEF_USE_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<ClientApp> 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;
// Create the main context object.
scoped_ptr<MainContextImpl> context(new MainContextImpl(0, NULL));
CefSettings settings;
#if !defined(CEF_USE_SANDBOX)
settings.no_sandbox = true;
#endif
// Populate the settings based on command line arguments.
context->PopulateSettings(&settings);
// Create the main message loop object.
scoped_ptr<MainMessageLoop> message_loop;
if (settings.multi_threaded_message_loop)
message_loop.reset(new MainMessageLoopMultithreadedWin);
else
message_loop.reset(new MainMessageLoopStd);
// Initialize CEF.
CefInitialize(main_args, settings, app.get(), sandbox_info);
// Register scheme handlers.
test_runner::RegisterSchemeHandlers();
// 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);
RegisterMainClass(hInstance);
// Perform application initialization
if (!CreateMainWindow(hInstance, nCmdShow))
return FALSE;
// Register the find event message.
uFindMsg = RegisterWindowMessage(FINDMSGSTRING);
// Run the message loop. This will block until Quit() is called.
int result = message_loop->Run();
// Shut down CEF.
CefShutdown();
// Release objects in reverse order of creation.
message_loop.reset();
context.reset();
return result;
}
// Register the main window class.
ATOM RegisterMainClass(HINSTANCE hInstance) {
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = MainWndProc;
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);
}
// Create and show the main window.
BOOL CreateMainWindow(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;
}
// Set focus to |browser| on the UI thread.
static void SetFocusToBrowser(CefRefPtr<CefBrowser> browser) {
if (!CefCurrentlyOn(TID_UI)) {
// Execute on the UI thread.
CefPostTask(TID_UI, base::Bind(&SetFocusToBrowser, browser));
return;
}
if (!g_handler)
return;
if (g_handler->is_osr()) {
// Give focus to the OSR window.
CefRefPtr<OSRWindow> osr_window =
OSRWindow::From(g_handler->GetOSRHandler());
if (osr_window)
::SetFocus(osr_window->hwnd());
} else {
// Give focus to the browser.
browser->GetHost()->SetFocus(true);
}
}
// Window procedure for the main window.
LRESULT CALLBACK MainWndProc(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<CefBrowser> 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 ClientHandlerShared();
g_handler->SetMainWindowHandle(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<WNDPROC>(GetWindowLongPtr(editWnd, GWLP_WNDPROC));
SetWindowLongPtr(editWnd, GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(MainWndProc));
g_handler->SetUXWindowHandles(
editWnd, backWnd, forwardWnd, reloadWnd, stopWnd);
rect.top += URLBAR_HEIGHT;
CefWindowInfo info;
CefBrowserSettings settings;
// Populate the browser settings based on command line arguments.
MainContext::Get()->PopulateBrowserSettings(&settings);
if (g_handler->is_osr()) {
CefRefPtr<CefCommandLine> command_line =
CefCommandLine::GetGlobalCommandLine();
const bool transparent =
command_line->HasSwitch(switches::kTransparentPaintingEnabled);
const bool show_update_rect =
command_line->HasSwitch(switches::kShowUpdateRect);
CefRefPtr<OSRWindow> osr_window =
OSRWindow::Create(&g_main_browser_provider, transparent,
show_update_rect);
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->startup_url(), settings, NULL);
return 0;
}
case WM_COMMAND: {
CefRefPtr<CefBrowser> browser;
if (g_handler.get())
browser = g_handler->GetBrowser();
wmId = LOWORD(wParam);
wmEvent = HIWORD(wParam);
if (wmId >= ID_TESTS_FIRST && wmId <= ID_TESTS_LAST) {
test_runner::RunTest(browser, wmId);
return 0;
}
// Parse the menu selections:
switch (wmId) {
case IDM_ABOUT:
DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, AboutWndProc);
return 0;
case IDM_EXIT:
if (g_handler.get())
g_handler->CloseAllBrowsers(false);
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);
// Override the dialog's window procedure.
WNDPROC wndproc_old = SetWndProcPtr(hFindDlg, FindWndProc);
// Associate |wndproc_old| with the dialog.
SetUserDataPtr(hFindDlg, wndproc_old);
} 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;
}
break;
}
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
EndPaint(hWnd, &ps);
return 0;
case WM_SETFOCUS:
if (g_handler.get()) {
CefRefPtr<CefBrowser> browser = g_handler->GetBrowser();
if (browser)
SetFocusToBrowser(browser);
}
return 0;
case WM_SIZE: {
if (!g_handler.get())
break;
// For off-screen browsers when the frame window is minimized set the
// browser as hidden to reduce resource usage.
const bool offscreen = g_handler->is_osr();
if (offscreen) {
CefRefPtr<OSRWindow> osr_window =
OSRWindow::From(g_handler->GetOSRHandler());
if (osr_window)
osr_window->WasHidden(wParam == SIZE_MINIMIZED);
}
if (g_handler->GetBrowser()) {
// Retrieve the window handle (parent window with off-screen rendering).
CefWindowHandle hwnd =
g_handler->GetBrowser()->GetHost()->GetWindowHandle();
if (hwnd) {
if (wParam == SIZE_MINIMIZED) {
// For windowed browsers when the frame window is minimized set the
// browser window size to 0x0 to reduce resource usage.
if (!offscreen) {
SetWindowPos(hwnd, NULL,
0, 0, 0, 0, SWP_NOZORDER | SWP_NOMOVE | SWP_NOACTIVATE);
}
} else {
// Resize the window and address bar to match the new frame 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_MOVING:
case WM_MOVE:
// Notify the browser of move events so that popup windows are displayed
// in the correct location and dismissed when the window moves.
if (g_handler.get() && g_handler->GetBrowser())
g_handler->GetBrowser()->GetHost()->NotifyMoveOrResizeStarted();
return 0;
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<CefBrowser> 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);
}
}
// Window procedure for the find dialog.
LRESULT CALLBACK FindWndProc(HWND hWnd, UINT message, WPARAM wParam,
LPARAM lParam) {
REQUIRE_MAIN_THREAD();
WNDPROC old_wndproc = GetUserDataPtr<WNDPROC>(hWnd);
DCHECK(old_wndproc);
switch (message) {
case WM_ACTIVATE:
// Set this dialog as current when activated.
MainMessageLoop::Get()->SetCurrentModelessDialog(
wParam == 0 ? NULL : hWnd);
return FALSE;
case WM_NCDESTROY:
// Clear the reference to |old_wndproc|.
SetUserDataPtr(hWnd, NULL);
break;
}
return CallWindowProc(old_wndproc, hWnd, message, wParam, lParam);
}
// Window procedure for the about dialog.
INT_PTR CALLBACK AboutWndProc(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;
}
} // namespace
} // namespace client
// Program entry point function.
int APIENTRY wWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow) {
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
return client::RunMain(hInstance, nCmdShow);
}
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