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// Copyright (C) Microsoft Corporation. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "stdafx.h"
#include "AppWindow.h"
#include <functional>
#include <string>
#include <vector>
#include "App.h"
#include "CheckFailure.h"
#include "ControlComponent.h"
#include "FileComponent.h"
#include "ProcessComponent.h"
#include "Resource.h"
#include "ScenarioAddRemoteObject.h"
#include "ScenarioWebMessage.h"
#include "ScenarioWebViewEventMonitor.h"
#include "ScriptComponent.h"
#include "SettingsComponent.h"
#include "ViewComponent.h"
using namespace Microsoft::WRL;
static constexpr size_t s_maxLoadString = 100;
static constexpr UINT s_runAsyncWindowMessage = WM_APP;
static thread_local size_t s_appInstances = 0;
// Creates a new window which is a copy of the entire app, but on the same thread.
AppWindow::AppWindow(std::wstring initialUri, std::function<void()> webviewCreatedCallback)
: m_initialUri(initialUri), m_onWebViewFirstInitialized(webviewCreatedCallback)
{
++s_appInstances;
WCHAR szTitle[s_maxLoadString]; // The title bar text
LoadStringW(g_hInstance, IDS_APP_TITLE, szTitle, s_maxLoadString);
m_mainWindow = CreateWindowExW(
WS_EX_CONTROLPARENT, GetWindowClass(), szTitle, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, 0,
CW_USEDEFAULT, 0, nullptr, nullptr, g_hInstance, nullptr);
SetWindowLongPtr(m_mainWindow, GWLP_USERDATA, (LONG_PTR)this);
m_toolbar.Initialize(m_mainWindow);
ShowWindow(m_mainWindow, g_nCmdShow);
UpdateWindow(m_mainWindow);
RunAsync([this] { InitializeWebView(kDefaultOption); });
}
// Register the Win32 window class for the app window.
PCWSTR AppWindow::GetWindowClass()
{
// Only do this once
static PCWSTR windowClass = [] {
static WCHAR windowClass[s_maxLoadString];
LoadStringW(g_hInstance, IDC_WEBVIEW2APISAMPLE, windowClass, s_maxLoadString);
WNDCLASSEXW wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProcStatic;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = g_hInstance;
wcex.hIcon = LoadIcon(g_hInstance, MAKEINTRESOURCE(IDI_WEBVIEW2APISAMPLE));
wcex.hCursor = LoadCursor(nullptr, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wcex.lpszMenuName = MAKEINTRESOURCEW(IDC_WEBVIEW2APISAMPLE);
wcex.lpszClassName = windowClass;
wcex.hIconSm = LoadIcon(g_hInstance, MAKEINTRESOURCE(IDI_SMALL));
RegisterClassExW(&wcex);
return windowClass;
}();
return windowClass;
}
LRESULT CALLBACK AppWindow::WndProcStatic(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
if (auto app = (AppWindow*)GetWindowLongPtr(hWnd, GWLP_USERDATA))
{
LRESULT result = 0;
if (app->HandleWindowMessage(hWnd, message, wParam, lParam, &result))
{
return result;
}
}
return DefWindowProc(hWnd, message, wParam, lParam);
}
// Handle Win32 window messages sent to the main window
bool AppWindow::HandleWindowMessage(
HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, LRESULT* result)
{
// Give all components a chance to handle the message first.
for (auto& component : m_components)
{
if (component->HandleWindowMessage(hWnd, message, wParam, lParam, result))
{
return true;
}
}
switch (message)
{
case WM_SIZE:
{
// Don't resize the app or webview when the app is minimized
// let WM_SYSCOMMAND to handle it
if (lParam != 0)
{
ResizeEverything();
return true;
}
}
break;
case WM_PAINT:
{
PAINTSTRUCT ps;
BeginPaint(hWnd, &ps);
EndPaint(hWnd, &ps);
return true;
}
break;
case s_runAsyncWindowMessage:
{
auto* task = reinterpret_cast<std::function<void()>*>(wParam);
(*task)();
delete task;
return true;
}
break;
case WM_NCDESTROY:
{
SetWindowLongPtr(hWnd, GWLP_USERDATA, NULL);
delete this;
if (--s_appInstances == 0)
{
PostQuitMessage(0);
}
}
break;
//! [RestartManager]
case WM_QUERYENDSESSION:
{
// yes, we can shut down
// Register how we might be restarted
RegisterApplicationRestart(L"--restore", RESTART_NO_CRASH | RESTART_NO_HANG);
*result = TRUE;
return true;
}
break;
case WM_ENDSESSION:
{
if (wParam == TRUE)
{
// save app state and exit.
PostQui
10BC0
tMessage(0);
return true;
}
}
break;
//! [RestartManager]
case WM_KEYDOWN:
{
// If bit 30 is set, it means the WM_KEYDOWN message is autorepeated.
// We want to ignore it in that case.
if (!(lParam & (1 << 30)))
{
if (auto action = GetAcceleratorKeyFunction((UINT)wParam))
{
action();
return true;
}
}
}
break;
case WM_COMMAND:
{
return ExecuteWebViewCommands(wParam, lParam) || ExecuteAppCommands(wParam, lParam);
}
break;
}
return false;
}
// Handle commands related to the WebView.
// This will do nothing if the WebView is not initialized.
bool AppWindow::ExecuteWebViewCommands(WPARAM wParam, LPARAM lParam)
{
if (!m_webView)
return false;
switch (LOWORD(wParam))
{
case IDM_GET_BROWSER_VERSION_AFTER_CREATION:
{
//! [GetBrowserVersionInfo]
wil::unique_cotaskmem_string version_info;
m_webViewEnvironment->get_BrowserVersionInfo(&version_info);
MessageBox(
m_mainWindow, version_info.get(), L"Browser Version Info After WebView Creation",
MB_OK);
//! [GetBrowserVersionInfo]
return true;
}
case IDM_CLOSE_WEBVIEW:
{
CloseWebView();
return true;
}
case IDM_SCENARIO_POST_WEB_MESSAGE:
{
NewComponent<ScenarioWebMessage>(this);
return true;
}
case IDM_SCENARIO_ADD_REMOTE_OBJECT:
{
NewComponent<ScenarioAddRemoteObject>(this);
return true;
}
case IDM_SCENARIO_WEB_VIEW_EVENT_MONITOR:
{
NewComponent<ScenarioWebViewEventMonitor>(this);
return true;
}
}
return false;
}
// Handle commands not related to the WebView, which will work even if the WebView
// is not currently initialized.
bool AppWindow::ExecuteAppCommands(WPARAM wParam, LPARAM lParam)
{
switch (LOWORD(wParam))
{
case IDM_ABOUT:
DialogBox(g_hInstance, MAKEINTRESOURCE(IDD_ABOUTBOX), m_mainWindow, About);
return true;
case IDM_GET_BROWSER_VERSION_BEFORE_CREATION:
{
wil::unique_cotaskmem_string version_info;
GetWebView2BrowserVersionInfo(nullptr, &version_info);
MessageBox(
m_mainWindow, version_info.get(), L"Browser Version Info Before WebView Creation",
MB_OK);
return true;
}
case IDM_EXIT:
CloseAppWindow();
return true;
case IDM_REINIT_INSTALLED:
InitializeWebView(kUseInstalledBrowser);
return true;
case IDM_REINIT_WINDOWED:
InitializeWebView(kDefaultOption);
return true;
case IDM_TOGGLE_FULLSCREEN_ALLOWED:
{
m_fullScreenAllowed = !m_fullScreenAllowed;
MessageBox(nullptr,
(std::wstring(L"Fullscreen is now ") +
(m_fullScreenAllowed ? L"allowed" : L"disallowed"))
.c_str(),
L"", MB_OK);
return true;
}
case IDM_NEW_WINDOW:
new AppWindow();
return true;
case IDM_NEW_THREAD:
CreateNewThread();
return true;
}
return false;
}
// Message handler for about dialog.
INT_PTR CALLBACK AppWindow::About(HWND hDlg, UINT message, WPARAM wParam, LPARAM 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;
}
// Decide what to do when an accelerator key is pressed. Instead of immediately performing
// the action, we hand it to the caller so they can decide whether to run it right away
// or running it asynchronously. Will return nullptr if there is no action for the key.
std::function<void()> AppWindow::GetAcceleratorKeyFunction(UINT key)
{
if (GetKeyState(VK_CONTROL) < 0)
{
switch (key)
{
case 'N':
return [this] { new AppWindow(); };
case 'Q':
return [this] { CloseAppWindow(); };
case 'S':
return [this] {
if (auto file = GetComponent<FileComponent>())
{
file->SaveScreenshot();
}
};
case 'T':
return [this] { CreateNewThread(); };
case 'W':
return [this] { CloseWebView(); };
}
}
return nullptr;
}
//! [CreateWebView]
// Create or recreate the WebView and its environment.
void AppWindow::InitializeWebView(InitializeWebViewFlags webviewInitFlags)
{
m_lastUsedInitFlags = webviewInitFlags;
// To ensure browser switches get applied correctly, we need to close
// the existing WebView. This will result in a new browser process
// getting created which will apply the browser switches.
CloseWebView();
LPCWSTR subFolder = nullptr;
LPCWSTR additionalBrowserSwitches = nullptr;
HRESULT hr = CreateWebView2EnvironmentWithDetails(
subFolder, nullptr, additionalBrowserSwitches,
Callback<IWebView2CreateWebView2EnvironmentCompletedHandler>(
this, &AppWindow::OnCreateEnvironmentCompleted)
.Get());
if (!SUCCEEDED(hr))
{
if (hr == HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND))
{
MessageBox(
m_mainWindow,
L"Couldn't find Edge installation. "
"Do you have a version installed that's compatible with this "
"WebView2 SDK version?",
nullptr, MB_OK);
}
else
{
ShowFailure(hr, L"Failed to create webview environment");
}
}
}
// This is the callback passed to CreateWebViewEnvironmnetWithDetails.
// Here we simply create the WebView.
HRESULT AppWindow::OnCreateEnvironmentCompleted(
HRESULT result, IWebView2Environment* environment)
{
CHECK_FAILURE(result);
CHECK_FAILURE(environment->QueryInterface(IID_PPV_ARGS(&m_webViewEnvironment)));
CHECK_FAILURE(m_webViewEnvironment->CreateWebView(
m_mainWindow, Callback<IWebView2CreateWebViewCompletedHandler>(
this, &AppWindow::OnCreateWebViewCompleted)
.Get()));
return S_OK;
}
//! [CreateWebView]
// This is the callback passed to CreateWebView. Here we initialize all WebView-related
// state and register most of our event handlers with the WebView.
HRESULT AppWindow::OnCreateWebViewCompleted(HRESULT result, IWebView2WebView* webview)
{
if (result == S_OK)
{
// We should check for failure here because if this app is using a newer
// SDK version compared to the install of the Edge browser, the Edge
// browser might not have support for the latest version of the
// IWebView2WebViewN interface.
CHECK_FAILURE(webview->QueryInterface(IID_PPV_ARGS(&m_webView)));
// Create components. These will be deleted when the WebView is closed.
NewComponent<FileComponent>(this);
NewComponent<ProcessComponent>(this);
NewComponent<ScriptComponent>(this);
NewComponent<SettingsComponent>(
this, m_webViewEnvironment.get(), m_oldSettingsComponent.get());
m_oldSettingsComponent = nullptr;
NewComponent<ViewComponent>(this);
NewComponent<ControlComponent>(this, &m_toolbar);
// We have a few of our own event handlers to register here as well
RegisterEventHandlers();
// Set the initial size of the WebView
ResizeEverything();
if (m_onWebViewFirstInitialized)
{
m_onWebViewFirstInitialized();
m_onWebViewFirstInitialized = nullptr;
}
if (!m_initialUri.empty())
{
m_webView->Navigate(m_initialUri.c_str());
}
}
else
{
ShowFailure(result, L"Failed to create webview");
}
return S_OK;
}
void AppWindow::ReinitializeWebView()
{
// Save the settings component from being deleted when the WebView is closed, so we can
// copy its properties to the next settings component.
m_oldSettingsComponent = MoveComponent<SettingsComponent>();
InitializeWebView(m_lastUsedInitFlags);
}
void AppWindow::ReinitializeWebViewWithNewBrowser()
{
// Save the settings component from being deleted when the WebView is closed, so we can
// copy its properties to the next settings component.
m_oldSettingsComponent = MoveComponent<SettingsComponent>();
// Use the reference to the web view before we close it
UINT webviewProcessId = 0;
m_webView->get_BrowserProcessId(&webviewProcessId);
// We need to close the current webviews and wait for the browser_process to exit
// This is so the new webviews don't use the old browser exe
CloseWebView();
// Make sure the browser process inside webview is closed
ProcessComponent::EnsureProcessIsClosed(webviewProcessId, 2000);
InitializeWebView(m_lastUsedInitFlags);
}
void AppWindow::RestartApp()
{
// Use the reference to the web view before we close the app window
UINT webviewProcessId = 0;
m_webView->get_BrowserProcessId(&webviewProcessId);
// To restart the app completely, first we close the current App Window
CloseAppWindow();
// Make sure the browser process inside webview is closed
ProcessComponent::EnsureProcessIsClosed(webviewProcessId, 2000);
// Get the command line arguments used to start this app
// so we can re-create the process with them
LPWSTR args = GetCommandLineW();
STARTUPINFOW startup_info = {0};
startup_info.cb = sizeof(startup_info);
PROCESS_INFORMATION temp_process_info = {};
// Start a new process
if (!::CreateProcess(
nullptr, args,
nullptr, // default process attributes
nullptr, // default thread attributes
FALSE, // do not inherit handles
0,
nullptr, // no environment
nullptr, // default current directory
&startup_info, &temp_process_info))
{
// Log some error information if desired
}
// Terminate this current process
::exit(0);
}
void AppWindow::RegisterEventHandlers()
{
//! [ContainsFullScreenElementChanged]
// Register a handler for the ContainsFullScreenChanged event.
CHECK_FAILURE(m_webView->add_ContainsFullScreenElementChanged(
Callback<IWebView2ContainsFullScreenElementChangedEventHandler>(
[this](IWebView2WebView5* sender, IUnknown* args) -> HRESULT {
if (m_fullScreenAllowed)
C949
{
CHECK_FAILURE(sender->get_ContainsFullScreenElement(&m_containsFullscreenElement));
if (m_containsFullscreenElement)
{
EnterFullScreen();
}
else
{
ExitFullScreen();
}
}
return S_OK;
})
.Get(),
nullptr));
//! [ContainsFullScreenElementChanged]
//! [NewWindowRequested]
// Register a handler for the NewWindowRequested event.
// This handler will defer the event, create a new app window, and then once the
// new window is ready, it'll provide that new window's WebView as the response to
// the request.
CHECK_FAILURE(m_webView->add_NewWindowRequested(
Callback<IWebView2NewWindowRequestedEventHandler>(
[this](IWebView2WebView* sender, IWebView2NewWindowRequestedEventArgs* args) {
wil::com_ptr<IWebView2Deferral> deferral;
CHECK_FAILURE(args->GetDeferral(&deferral));
auto newAppWindow = new AppWindow(L"");
newAppWindow->m_onWebViewFirstInitialized = [args, deferral, newAppWindow]() {
CHECK_FAILURE(args->put_NewWindow(newAppWindow->m_webView.get()));
CHECK_FAILURE(args->put_Handled(TRUE));
CHECK_FAILURE(deferral->Complete());
};
return S_OK;
})
.Get(),
nullptr));
//! [NewWindowRequested]
//! [NewVersionAvailable]
// After the environment is successfully created,
// register a handler for the NewVersionAvailable event.
// This handler tells when there is a new Edge version available on the machine.
CHECK_FAILURE(m_webViewEnvironment->add_NewVersionAvailable(
Callback<IWebView2NewVersionAvailableEventHandler>(
[this](IWebView2Environment* sender, IWebView2NewVersionAvailableEventArgs* args)
-> HRESULT {
// Get the version value from args
wil::unique_cotaskmem_string newVersion;
CHECK_FAILURE(args->get_NewVersion(&newVersion));
std::wstring message = L"We detected there is a new version for the browser.";
message += L"\n\nVersion number: ";
message += newVersion.get();
message += L"\n\n";
if (m_webView)
{
message += L"Do you want to restart the app? \n\n";
message += L"Click No if you only want to re-create the webviews. \n";
message += L"Click Cancel for no action. \n";
}
int response = MessageBox(
m_mainWindow, message.c_str(), L"New available version",
m_webView ? MB_YESNOCANCEL : MB_OK);
if (response == IDYES)
{
RestartApp();
}
else if (response == IDNO)
{
ReinitializeWebViewWithNewBrowser();
}
else
{
// do nothing
}
return S_OK;
})
.Get(),
nullptr));
//! [NewVersionAvailable]
}
// Updates the sizing and positioning of everything in the window.
void AppWindow::ResizeEverything()
{
RECT availableBounds = {0};
GetClientRect(m_mainWindow, &availableBounds);
if (!m_containsFullscreenElement)
{
availableBounds = m_toolbar.Resize(availableBounds);
}
if (auto view = GetComponent<ViewComponent>())
{
view->SetBounds(availableBounds);
}
}
//! [Close]
// Close the WebView and deinitialize related state. This doesn't close the app window.
void AppWindow::CloseWebView()
{
DeleteAllComponents();
if (m_webView)
{
m_webView->Close();
m_webView = nullptr;
}
m_webViewEnvironment = nullptr;
}
//! [Close]
void AppWindow::CloseAppWindow()
{
CloseWebView();
DestroyWindow(m_mainWindow);
}
void AppWindow::DeleteComponent(ComponentBase* component)
{
for (auto iter = m_components.begin(); iter != m_components.end(); iter++)
{
if (iter->get() == component)
{
m_components.erase(iter);
return;
}
}
}
void AppWindow::DeleteAllComponents()
{
// Delete components in reverse order of initialization.
while (!m_components.empty())
{
m_components.pop_back();
}
}
template <class ComponentType> std::unique_ptr<ComponentType> AppWindow::MoveComponent()
{
for (auto iter = m_components.begin(); iter != m_components.end(); iter++)
{
if (dynamic_cast<ComponentType*>(iter->get()))
{
auto wanted = reinterpret_cast<std::unique_ptr<ComponentType>&&>(std::move(*iter));
m_components.erase(iter);
return std::move(wanted);
}
}
return nullptr;
}
void AppWindow::SetTitleText(PCWSTR titleText)
{
SetWindowText(m_mainWindow, titleText);
}
RECT AppWindow::GetWindowBounds()
{
RECT hwndBounds = {0};
GetClientRect(m_mainWindow, &hwndBounds);
return hwndBounds;
}
std::wstring AppWindow::GetLocalPath(std::wstring relativePath)
{
WCHAR rawPath[MAX_PATH];
GetModuleFileNameW(g_hInstance, rawPath, MAX_PATH);
std::wstring path(rawPath);
std::size_t index = path.find_last_of(L"\\") + 1;
path.replace(index, path.length(), relativePath);
return path;
}
std::wstring AppWindow::GetLocalUri(std::wstring relativePath)
{
std::wstring path = GetLocalPath(relativePath);
wil::com_ptr<IUri> uri;
CHECK_FAILURE(CreateUri(path.c_str(), Uri_CREATE_ALLOW_IMPLICIT_FILE_SCHEME, 0, &uri));
wil::unique_bstr uriBstr;
CHECK_FAILURE(uri->GetAbsoluteUri(&uriBstr));
return std::wstring(uriBstr.get());
}
void AppWindow::RunAsync(std::function<void()> callback)
{
auto* task = new std::function<void()>(callback);
PostMessage(m_mainWindow, s_runAsyncWindowMessage, reinterpret_cast<WPARAM>(task), 0);
}
void AppWindow::EnterFullScreen()
{
DWORD style = GetWindowLong(m_mainWindow, GWL_STYLE);
MONITORINFO monitor_info = {sizeof(monitor_info)};
m_hMenu = ::GetMenu(m_mainWindow);
::SetMenu(m_mainWindow, nullptr);
if (GetWindowPlacement(m_mainWindow, &m_previousPlacement) &&
GetMonitorInfo(
MonitorFromWindow(m_mainWindow, MONITOR_DEFAULTTOPRIMARY), &monitor_info))
{
SetWindowLong(m_mainWindow, GWL_STYLE, style & ~WS_OVERLAPPEDWINDOW);
SetWindowPos(
m_mainWindow, HWND_TOP, monitor_info.rcMonitor.left, monitor_info.rcMonitor.top,
monitor_info.rcMonitor.right - monitor_info.rcMonitor.left,
monitor_info.rcMonitor.bottom - monitor_info.rcMonitor.top,
SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
}
}
void AppWindow::ExitFullScreen()
{
DWORD style = GetWindowLong(m_mainWindow, GWL_STYLE);
::SetMenu(m_mainWindow, m_hMenu);
SetWindowLong(m_mainWindow, GWL_STYLE, style | WS_OVERLAPPEDWINDOW);
SetWindowPlacement(m_mainWindow, &m_previousPlacement);
SetWindowPos(
m_mainWindow, NULL, 0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
}