| 1 | //go:build windows |
| 2 | // +build windows |
| 3 | |
| 4 | package edge |
| 5 | |
| 6 | import ( |
| 7 | "errors" |
| 8 | "fmt" |
| 9 | "log" |
| 10 | "os" |
| 11 | "path/filepath" |
| 12 | "runtime" |
| 13 | "strings" |
| 14 | "sync/atomic" |
| 15 | "syscall" |
| 16 | "time" |
| 17 | "unsafe" |
| 18 | |
| 19 | "github.com/wailsapp/go-webview2/internal/w32" |
| 20 | "github.com/wailsapp/go-webview2/webviewloader" |
| 21 | "golang.org/x/sys/windows" |
| 22 | ) |
| 23 | |
| 24 | type Rect = w32.Rect |
| 25 | |
| 26 | // WebView2 must remain the sole owner of its rasterization scale. Disabling |
| 27 | // monitor-scale detection leaves frameless windows with stale bounds after a |
| 28 | // minimise/restore cycle on mixed-DPI displays (Reasonix #5862, Wails #5544). |
| 29 | const ( |
| 30 | shouldDetectMonitorScaleChanges = true |
| 31 | reasonixNoProxyServerBrowserArg = "--no-proxy-server" |
| 32 | ) |
| 33 | |
| 34 | func globalErrorHandler(err error) { |
| 35 | if err == nil { |
| 36 | return |
| 37 | } |
| 38 | |
| 39 | fmt.Printf("[WebView2 Error] %v\n", err) |
| 40 | |
| 41 | stackBuf := make([]uintptr, 64) |
| 42 | stackSize := runtime.Callers(2, stackBuf) |
| 43 | frames := runtime.CallersFrames(stackBuf[:stackSize]) |
| 44 | |
| 45 | fmt.Println("\nStack trace:") |
| 46 | stackIndex := 1 |
| 47 | for { |
| 48 | frame, more := frames.Next() |
| 49 | if !more { |
| 50 | break |
| 51 | } |
| 52 | log.Printf("%d: %s\n\t%s:%d\n", stackIndex, frame.Function, frame.File, frame.Line) |
| 53 | stackIndex++ |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | type Chromium struct { |
| 58 | hwnd uintptr |
| 59 | padding struct { |
| 60 | Left int32 |
| 61 | Top int32 |
| 62 | Right int32 |
| 63 | Bottom int32 |
| 64 | } |
| 65 | |
| 66 | controller *ICoreWebView2Controller |
| 67 | webview *ICoreWebView2 |
| 68 | inited uintptr |
| 69 | envCompleted *iCoreWebView2CreateCoreWebView2EnvironmentCompletedHandler |
| 70 | controllerCompleted *iCoreWebView2CreateCoreWebView2ControllerCompletedHandler |
| 71 | webMessageReceived *iCoreWebView2WebMessageReceivedEventHandler |
| 72 | containsFullScreenElementChanged *ICoreWebView2ContainsFullScreenElementChangedEventHandler |
| 73 | permissionRequested *iCoreWebView2PermissionRequestedEventHandler |
| 74 | webResourceRequested *iCoreWebView2WebResourceRequestedEventHandler |
| 75 | acceleratorKeyPressed *ICoreWebView2AcceleratorKeyPressedEventHandler |
| 76 | navigationCompleted *ICoreWebView2NavigationCompletedEventHandler |
| 77 | processFailed *ICoreWebView2ProcessFailedEventHandler |
| 78 | |
| 79 | environment *ICoreWebView2Environment |
| 80 | webview2RuntimeVersion string |
| 81 | |
| 82 | // Settings |
| 83 | Debug bool |
| 84 | DataPath string |
| 85 | BrowserPath string |
| 86 | AdditionalBrowserArgs []string |
| 87 | |
| 88 | // permissions |
| 89 | permissions map[CoreWebView2PermissionKind]CoreWebView2PermissionState |
| 90 | globalPermission *CoreWebView2PermissionState |
| 91 | |
| 92 | // Callbacks |
| 93 | MessageCallback func(message string, sender *ICoreWebView2, args *ICoreWebView2WebMessageReceivedEventArgs) |
| 94 | MessageWithAdditionalObjectsCallback func(message string, sender *ICoreWebView2, args *ICoreWebView2WebMessageReceivedEventArgs) |
| 95 | WebResourceRequestedCallback func(request *ICoreWebView2WebResourceRequest, args *ICoreWebView2WebResourceRequestedEventArgs) |
| 96 | NavigationCompletedCallback func(sender *ICoreWebView2, args *ICoreWebView2NavigationCompletedEventArgs) |
| 97 | ProcessFailedCallback func(sender *ICoreWebView2, args *ICoreWebView2ProcessFailedEventArgs) |
| 98 | ContainsFullScreenElementChangedCallback func(sender *ICoreWebView2, args *ICoreWebView2ContainsFullScreenElementChangedEventArgs) |
| 99 | AcceleratorKeyCallback func(uint) bool |
| 100 | |
| 101 | // Error handling |
| 102 | globalErrorCallback func(error) |
| 103 | |
| 104 | shuttingDown bool |
| 105 | |
| 106 | // Resize debouncing |
| 107 | lastBounds *w32.Rect |
| 108 | resizeTimer *time.Timer |
| 109 | } |
| 110 | |
| 111 | func NewChromium() *Chromium { |
| 112 | // Reasonix's WebView only loads embedded assets and loopback remote-workspace |
| 113 | // pages. Keep that native UI independent from a stale Windows system proxy; |
| 114 | // provider, updater, MCP, and SSH traffic use Reasonix's separate Go client. |
| 115 | e := &Chromium{AdditionalBrowserArgs: []string{reasonixNoProxyServerBrowserArg}} |
| 116 | /* |
| 117 | All these handlers are passed to native code through syscalls with 'uintptr(unsafe.Pointer(handler))' and we know |
| 118 | that a pointer to those will be kept in the native code. Furthermore these handlers als contain pointer to other Go |
| 119 | structs like the vtable. |
| 120 | This violates the unsafe.Pointer rule '(4) Conversion of a Pointer to a uintptr when calling syscall.Syscall.' because |
| 121 | theres no guarantee that Go doesn't move these objects. |
| 122 | AFAIK currently the Go runtime doesn't move HEAP objects, so we should be safe with these handlers. But they don't |
| 123 | guarantee it, because in the future Go might use a compacting GC. |
| 124 | There's a proposal to add a runtime.Pin function, to prevent moving pinned objects, which would allow to easily fix |
| 125 | this issue by just pinning the handlers. The https://go-review.googlesource.com/c/go/+/367296/ should land in Go 1.19. |
| 126 | */ |
| 127 | e.envCompleted = newICoreWebView2CreateCoreWebView2EnvironmentCompletedHandler(e) |
| 128 | e.controllerCompleted = newICoreWebView2CreateCoreWebView2ControllerCompletedHandler(e) |
| 129 | e.webMessageReceived = newICoreWebView2WebMessageReceivedEventHandler(e) |
| 130 | e.permissionRequested = newICoreWebView2PermissionRequestedEventHandler(e) |
| 131 | e.webResourceRequested = newICoreWebView2WebResourceRequestedEventHandler(e) |
| 132 | e.acceleratorKeyPressed = newICoreWebView2AcceleratorKeyPressedEventHandler(e) |
| 133 | e.navigationCompleted = newICoreWebView2NavigationCompletedEventHandler(e) |
| 134 | e.processFailed = newICoreWebView2ProcessFailedEventHandler(e) |
| 135 | e.containsFullScreenElementChanged = newICoreWebView2ContainsFullScreenElementChangedEventHandler(e) |
| 136 | /* |
| 137 | // Pinner seems to panic in some cases as reported on Discord, maybe during shutdown when GC detects pinned objects |
| 138 | // to be released that have not been unpinned. |
| 139 | // It would also be better to use our ComBridge for this event handlers implementation instead of pinning them. |
| 140 | // So all COM Implementations on the go-side use the same code. |
| 141 | var pinner runtime.Pinner |
| 142 | pinner.Pin(e.envCompleted) |
| 143 | pinner.Pin(e.controllerCompleted) |
| 144 | pinner.Pin(e.webMessageReceived) |
| 145 | pinner.Pin(e.permissionRequested) |
| 146 | pinner.Pin(e.webResourceRequested) |
| 147 | pinner.Pin(e.acceleratorKeyPressed) |
| 148 | pinner.Pin(e.navigationCompleted) |
| 149 | pinner.Pin(e.processFailed) |
| 150 | pinner.Pin(e.containsFullScreenElementChanged) |
| 151 | */ |
| 152 | e.permissions = make(map[CoreWebView2PermissionKind]CoreWebView2PermissionState) |
| 153 | e.globalErrorCallback = globalErrorHandler |
| 154 | return e |
| 155 | } |
| 156 | |
| 157 | func (e *Chromium) ShuttingDown() { |
| 158 | e.shuttingDown = true |
| 159 | } |
| 160 | |
| 161 | func (e *Chromium) errorCallback(err error) { |
| 162 | e.globalErrorCallback(err) |
| 163 | os.Exit(1) |
| 164 | } |
| 165 | |
| 166 | func (e *Chromium) SetErrorCallback(callback func(error)) { |
| 167 | if callback != nil { |
| 168 | e.globalErrorCallback = callback |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | func (e *Chromium) Embed(hwnd uintptr) bool { |
| 173 | |
| 174 | var err error |
| 175 | |
| 176 | e.hwnd = hwnd |
| 177 | |
| 178 | dataPath := e.DataPath |
| 179 | if dataPath == "" { |
| 180 | currentExePath := make([]uint16, windows.MAX_PATH) |
| 181 | _, err = windows.GetModuleFileName(windows.Handle(0), ¤tExePath[0], windows.MAX_PATH) |
| 182 | if err != nil { |
| 183 | e.errorCallback(err) |
| 184 | } |
| 185 | currentExeName := filepath.Base(windows.UTF16ToString(currentExePath)) |
| 186 | dataPath = filepath.Join(os.Getenv("AppData"), currentExeName) |
| 187 | } |
| 188 | |
| 189 | if e.BrowserPath != "" { |
| 190 | if _, err = os.Stat(e.BrowserPath); errors.Is(err, os.ErrNotExist) { |
| 191 | e.errorCallback(fmt.Errorf("browser path '%s' does not exist", e.BrowserPath)) |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | browserArgs := strings.Join(e.AdditionalBrowserArgs, " ") |
| 196 | if err := createCoreWebView2EnvironmentWithOptions(e.BrowserPath, dataPath, e.envCompleted, browserArgs); err != nil { |
| 197 | e.errorCallback(fmt.Errorf("error calling Webview2Loader: %s", err.Error())) |
| 198 | } |
| 199 | |
| 200 | e.webview2RuntimeVersion, err = webviewloader.GetAvailableCoreWebView2BrowserVersionString(e.BrowserPath) |
| 201 | if err != nil { |
| 202 | e.errorCallback(fmt.Errorf("error getting Webview2 runtime version: %s", err.Error())) |
| 203 | } |
| 204 | |
| 205 | var msg w32.Msg |
| 206 | for { |
| 207 | if atomic.LoadUintptr(&e.inited) != 0 { |
| 208 | break |
| 209 | } |
| 210 | r, _, _ := w32.User32GetMessageW.Call( |
| 211 | uintptr(unsafe.Pointer(&msg)), |
| 212 | 0, |
| 213 | 0, |
| 214 | 0, |
| 215 | ) |
| 216 | if r == 0 { |
| 217 | break |
| 218 | } |
| 219 | w32.User32TranslateMessage.Call(uintptr(unsafe.Pointer(&msg))) |
| 220 | w32.User32DispatchMessageW.Call(uintptr(unsafe.Pointer(&msg))) |
| 221 | } |
| 222 | e.Init("window.external={invoke:s=>window.chrome.webview.postMessage(s)}") |
| 223 | return true |
| 224 | } |
| 225 | |
| 226 | func (e *Chromium) SetPadding(padding Rect) { |
| 227 | if e.padding.Left == padding.Left && e.padding.Top == padding.Top && |
| 228 | e.padding.Right == padding.Right && e.padding.Bottom == padding.Bottom { |
| 229 | |
| 230 | return |
| 231 | } |
| 232 | |
| 233 | e.padding.Left = padding.Left |
| 234 | e.padding.Top = padding.Top |
| 235 | e.padding.Right = padding.Right |
| 236 | e.padding.Bottom = padding.Bottom |
| 237 | e.Resize() |
| 238 | } |
| 239 | |
| 240 | func (e *Chromium) ResizeWithBounds(bounds *Rect) { |
| 241 | if e.hwnd == 0 { |
| 242 | return |
| 243 | } |
| 244 | |
| 245 | bounds.Top += e.padding.Top |
| 246 | bounds.Bottom -= e.padding.Bottom |
| 247 | bounds.Left += e.padding.Left |
| 248 | bounds.Right -= e.padding.Right |
| 249 | |
| 250 | e.SetSize(*bounds) |
| 251 | } |
| 252 | |
| 253 | func (e *Chromium) Resize() { |
| 254 | if e.hwnd == 0 { |
| 255 | return |
| 256 | } |
| 257 | |
| 258 | bounds, err := w32.GetClientRect(e.hwnd) |
| 259 | if err != nil { |
| 260 | e.errorCallback(err) |
| 261 | return |
| 262 | } |
| 263 | |
| 264 | e.ResizeWithBounds(&bounds) |
| 265 | } |
| 266 | |
| 267 | func (e *Chromium) Navigate(url string) { |
| 268 | err := e.webview.Navigate(url) |
| 269 | if err != nil { |
| 270 | e.errorCallback(err) |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | func (e *Chromium) NavigateToString(content string) { |
| 275 | err := e.webview.NavigateToString(content) |
| 276 | if err != nil { |
| 277 | e.errorCallback(err) |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | func (e *Chromium) Init(script string) { |
| 282 | err := e.webview.AddScriptToExecuteOnDocumentCreated(script, nil) |
| 283 | if err != nil { |
| 284 | e.errorCallback(err) |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | func (e *Chromium) Eval(script string) { |
| 289 | if e.webview == nil || e.shuttingDown { |
| 290 | return |
| 291 | } |
| 292 | |
| 293 | err := e.webview.ExecuteScript(script, nil) |
| 294 | if err != nil && !errors.Is(err, windows.ERROR_IO_PENDING) { |
| 295 | e.errorCallback(err) |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | func (e *Chromium) Show() error { |
| 300 | return e.controller.PutIsVisible(true) |
| 301 | } |
| 302 | |
| 303 | func (e *Chromium) Hide() error { |
| 304 | return e.controller.PutIsVisible(false) |
| 305 | } |
| 306 | |
| 307 | func (e *Chromium) QueryInterface(_, _ uintptr) uintptr { |
| 308 | return 0 |
| 309 | } |
| 310 | |
| 311 | func (e *Chromium) AddRef() uintptr { |
| 312 | return 1 |
| 313 | } |
| 314 | |
| 315 | func (e *Chromium) Release() uintptr { |
| 316 | return 1 |
| 317 | } |
| 318 | |
| 319 | func (e *Chromium) EnvironmentCompleted(res uintptr, env *ICoreWebView2Environment) uintptr { |
| 320 | if env == nil { |
| 321 | err := syscall.Errno(res) |
| 322 | log.Printf("[WebView2] Environment creation failed with error code %v: %v\n", res, err) |
| 323 | if e.globalErrorCallback != nil { |
| 324 | e.globalErrorCallback(fmt.Errorf("failed to create WebView2 environment: %w", err)) |
| 325 | } |
| 326 | return res |
| 327 | } |
| 328 | |
| 329 | log.Printf("[WebView2] Environment created successfully\n") |
| 330 | |
| 331 | env.vtbl.AddRef.Call(uintptr(unsafe.Pointer(env))) |
| 332 | e.environment = env |
| 333 | |
| 334 | err := env.CreateCoreWebView2Controller(e.hwnd, e.controllerCompleted) |
| 335 | if err != nil { |
| 336 | e.errorCallback(err) |
| 337 | } |
| 338 | return 0 |
| 339 | } |
| 340 | |
| 341 | func (e *Chromium) CreateCoreWebView2ControllerCompleted(res uintptr, controller *ICoreWebView2Controller) uintptr { |
| 342 | if int32(res) < 0 { |
| 343 | e.errorCallback(fmt.Errorf("error creating controller with %08x: %s", res, syscall.Errno(res))) |
| 344 | } |
| 345 | |
| 346 | var err error |
| 347 | |
| 348 | controller.vtbl.AddRef.Call(uintptr(unsafe.Pointer(controller))) |
| 349 | e.controller = controller |
| 350 | |
| 351 | // Try to get ICoreWebView2Controller3 interface for better performance |
| 352 | if controller3 := e.controller.GetICoreWebView2Controller3(); controller3 != nil { |
| 353 | // Use raw pixels mode for better performance during resize |
| 354 | if err := controller3.PutBoundsMode(COREWEBVIEW2_BOUNDS_MODE_USE_RAW_PIXELS); err != nil { |
| 355 | e.errorCallback(err) |
| 356 | } |
| 357 | |
| 358 | // Raw-pixel bounds and automatic monitor-scale detection are orthogonal. |
| 359 | // Keep detection enabled so WebView2 updates its scale atomically when a |
| 360 | // minimised window is temporarily associated with another monitor. |
| 361 | if err := controller3.PutShouldDetectMonitorScaleChanges(shouldDetectMonitorScaleChanges); err != nil { |
| 362 | e.errorCallback(err) |
| 363 | } |
| 364 | } |
| 365 | var token _EventRegistrationToken |
| 366 | e.webview, err = e.controller.GetCoreWebView2() |
| 367 | if err != nil { |
| 368 | e.errorCallback(err) |
| 369 | } |
| 370 | |
| 371 | e.webview.vtbl.AddRef.Call(uintptr(unsafe.Pointer(e.webview))) |
| 372 | err = e.webview.AddWebMessageReceived(e.webMessageReceived, &token) |
| 373 | if err != nil { |
| 374 | e.errorCallback(err) |
| 375 | } |
| 376 | err = e.webview.AddPermissionRequested(e.permissionRequested, &token) |
| 377 | if err != nil { |
| 378 | e.errorCallback(err) |
| 379 | } |
| 380 | err = e.webview.AddWebResourceRequested(e.webResourceRequested, &token) |
| 381 | if err != nil { |
| 382 | e.errorCallback(err) |
| 383 | } |
| 384 | err = e.webview.AddNavigationCompleted(e.navigationCompleted, &token) |
| 385 | if err != nil { |
| 386 | e.errorCallback(err) |
| 387 | } |
| 388 | err = e.webview.AddProcessFailed(e.processFailed, &token) |
| 389 | if err != nil { |
| 390 | e.errorCallback(err) |
| 391 | } |
| 392 | err = e.webview.AddContainsFullScreenElementChanged(e.containsFullScreenElementChanged, &token) |
| 393 | if err != nil { |
| 394 | e.errorCallback(err) |
| 395 | } |
| 396 | |
| 397 | err = e.controller.AddAcceleratorKeyPressed(e.acceleratorKeyPressed, &token) |
| 398 | if err != nil { |
| 399 | e.errorCallback(err) |
| 400 | } |
| 401 | |
| 402 | atomic.StoreUintptr(&e.inited, 1) |
| 403 | |
| 404 | return 0 |
| 405 | } |
| 406 | |
| 407 | func (e *Chromium) ContainsFullScreenElementChanged(sender *ICoreWebView2, args *ICoreWebView2ContainsFullScreenElementChangedEventArgs) uintptr { |
| 408 | if e.ContainsFullScreenElementChangedCallback != nil { |
| 409 | e.ContainsFullScreenElementChangedCallback(sender, args) |
| 410 | } |
| 411 | return 0 |
| 412 | } |
| 413 | |
| 414 | func (e *Chromium) MessageReceived(sender *ICoreWebView2, args *ICoreWebView2WebMessageReceivedEventArgs) uintptr { |
| 415 | message, err := args.TryGetWebMessageAsString() |
| 416 | if err != nil { |
| 417 | e.errorCallback(err) |
| 418 | } |
| 419 | |
| 420 | if HasCapability(e.webview2RuntimeVersion, GetAdditionalObjects) { |
| 421 | obj, err := args.GetAdditionalObjects() |
| 422 | if err != nil { |
| 423 | e.errorCallback(err) |
| 424 | } |
| 425 | |
| 426 | if obj != nil && e.MessageWithAdditionalObjectsCallback != nil { |
| 427 | defer obj.Release() |
| 428 | e.MessageWithAdditionalObjectsCallback(message, sender, args) |
| 429 | } else if e.MessageCallback != nil { |
| 430 | e.MessageCallback(message, sender, args) |
| 431 | } |
| 432 | } else if e.MessageCallback != nil { |
| 433 | e.MessageCallback(message, sender, args) |
| 434 | } |
| 435 | |
| 436 | err = sender.PostWebMessageAsString(message) |
| 437 | if err != nil && !errors.Is(err, windows.ERROR_IO_PENDING) { |
| 438 | e.errorCallback(err) |
| 439 | } |
| 440 | return 0 |
| 441 | } |
| 442 | |
| 443 | func (e *Chromium) SetPermission(kind CoreWebView2PermissionKind, state CoreWebView2PermissionState) { |
| 444 | e.permissions[kind] = state |
| 445 | } |
| 446 | |
| 447 | func (e *Chromium) SetBackgroundColour(R, G, B, A uint8) { |
| 448 | controller := e.GetController() |
| 449 | controller2 := controller.GetICoreWebView2Controller2() |
| 450 | |
| 451 | backgroundCol := COREWEBVIEW2_COLOR{ |
| 452 | A: A, |
| 453 | R: R, |
| 454 | G: G, |
| 455 | B: B, |
| 456 | } |
| 457 | |
| 458 | // WebView2 only has 0 and 255 as valid values. |
| 459 | if backgroundCol.A > 0 && backgroundCol.A < 255 { |
| 460 | backgroundCol.A = 255 |
| 461 | } |
| 462 | |
| 463 | err := controller2.PutDefaultBackgroundColor(backgroundCol) |
| 464 | if err != nil { |
| 465 | e.errorCallback(err) |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | func (e *Chromium) SetGlobalPermission(state CoreWebView2PermissionState) { |
| 470 | e.globalPermission = &state |
| 471 | } |
| 472 | |
| 473 | func (e *Chromium) PermissionRequested(_ *ICoreWebView2, args *iCoreWebView2PermissionRequestedEventArgs) uintptr { |
| 474 | kind, err := args.GetPermissionKind() |
| 475 | if err != nil { |
| 476 | e.errorCallback(err) |
| 477 | } |
| 478 | var result CoreWebView2PermissionState |
| 479 | if e.globalPermission != nil { |
| 480 | result = *e.globalPermission |
| 481 | } else { |
| 482 | var ok bool |
| 483 | result, ok = e.permissions[kind] |
| 484 | if !ok { |
| 485 | result = CoreWebView2PermissionStateDefault |
| 486 | } |
| 487 | } |
| 488 | err = args.PutState(result) |
| 489 | if err != nil { |
| 490 | e.errorCallback(err) |
| 491 | } |
| 492 | return 0 |
| 493 | } |
| 494 | |
| 495 | func (e *Chromium) WebResourceRequested(sender *ICoreWebView2, args *ICoreWebView2WebResourceRequestedEventArgs) uintptr { |
| 496 | req, err := args.GetRequest() |
| 497 | if err != nil { |
| 498 | log.Fatal(err) |
| 499 | } |
| 500 | defer req.Release() |
| 501 | |
| 502 | if e.WebResourceRequestedCallback != nil { |
| 503 | e.WebResourceRequestedCallback(req, args) |
| 504 | } |
| 505 | return 0 |
| 506 | } |
| 507 | |
| 508 | func (e *Chromium) AddWebResourceRequestedFilter(filter string, ctx COREWEBVIEW2_WEB_RESOURCE_CONTEXT) { |
| 509 | err := e.webview.AddWebResourceRequestedFilter(filter, ctx) |
| 510 | if err != nil { |
| 511 | e.errorCallback(err) |
| 512 | } |
| 513 | } |
| 514 | |
| 515 | func (e *Chromium) Environment() *ICoreWebView2Environment { |
| 516 | return e.environment |
| 517 | } |
| 518 | |
| 519 | // AcceleratorKeyPressed is called when an accelerator key is pressed. |
| 520 | // If the AcceleratorKeyCallback method has been set, it will defer handling of the keypress |
| 521 | // to the callback. That callback returns a bool indicating if the event was handled. |
| 522 | func (e *Chromium) AcceleratorKeyPressed(sender *ICoreWebView2Controller, args *ICoreWebView2AcceleratorKeyPressedEventArgs) uintptr { |
| 523 | if e.AcceleratorKeyCallback == nil { |
| 524 | return 0 |
| 525 | } |
| 526 | eventKind, _ := args.GetKeyEventKind() |
| 527 | if eventKind == COREWEBVIEW2_KEY_EVENT_KIND_KEY_DOWN || |
| 528 | eventKind == COREWEBVIEW2_KEY_EVENT_KIND_SYSTEM_KEY_DOWN { |
| 529 | virtualKey, _ := args.GetVirtualKey() |
| 530 | status, _ := args.GetPhysicalKeyStatus() |
| 531 | if !status.WasKeyDown { |
| 532 | err := args.PutHandled(e.AcceleratorKeyCallback(virtualKey)) |
| 533 | if err != nil { |
| 534 | e.errorCallback(err) |
| 535 | } |
| 536 | } else { |
| 537 | return 0 |
| 538 | } |
| 539 | } |
| 540 | err := args.PutHandled(false) |
| 541 | if err != nil { |
| 542 | e.errorCallback(err) |
| 543 | } |
| 544 | return 0 |
| 545 | } |
| 546 | |
| 547 | func (e *Chromium) GetSettings() (*ICoreWebViewSettings, error) { |
| 548 | return e.webview.GetSettings() |
| 549 | } |
| 550 | |
| 551 | func (e *Chromium) GetController() *ICoreWebView2Controller { |
| 552 | return e.controller |
| 553 | } |
| 554 | |
| 555 | func boolToInt(input bool) int { |
| 556 | if input { |
| 557 | return 1 |
| 558 | } |
| 559 | return 0 |
| 560 | } |
| 561 | |
| 562 | func (e *Chromium) NavigationCompleted(sender *ICoreWebView2, args *ICoreWebView2NavigationCompletedEventArgs) uintptr { |
| 563 | if e.NavigationCompletedCallback != nil { |
| 564 | e.NavigationCompletedCallback(sender, args) |
| 565 | } |
| 566 | return 0 |
| 567 | } |
| 568 | |
| 569 | func (e *Chromium) ProcessFailed(sender *ICoreWebView2, args *ICoreWebView2ProcessFailedEventArgs) uintptr { |
| 570 | if e.ProcessFailedCallback != nil { |
| 571 | e.ProcessFailedCallback(sender, args) |
| 572 | } |
| 573 | return 0 |
| 574 | } |
| 575 | |
| 576 | func (e *Chromium) NotifyParentWindowPositionChanged() error { |
| 577 | //It looks like the wndproc function is called before the controller initialization is complete. |
| 578 | //Because of this the controller is nil |
| 579 | if e.controller == nil { |
| 580 | return nil |
| 581 | } |
| 582 | return e.controller.NotifyParentWindowPositionChanged() |
| 583 | } |
| 584 | |
| 585 | func (e *Chromium) Focus() { |
| 586 | err := e.controller.MoveFocus(COREWEBVIEW2_MOVE_FOCUS_REASON_PROGRAMMATIC) |
| 587 | if err != nil { |
| 588 | e.errorCallback(err) |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | func (e *Chromium) PutZoomFactor(zoomFactor float64) { |
| 593 | err := e.controller.PutZoomFactor(zoomFactor) |
| 594 | if err != nil { |
| 595 | e.errorCallback(err) |
| 596 | } |
| 597 | } |
| 598 | |
| 599 | func (e *Chromium) OpenDevToolsWindow() { |
| 600 | err := e.webview.OpenDevToolsWindow() |
| 601 | if err != nil { |
| 602 | e.errorCallback(err) |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | func (e *Chromium) HasCapability(c Capability) bool { |
| 607 | return HasCapability(e.webview2RuntimeVersion, c) |
| 608 | } |
| 609 | |
| 610 | func (e *Chromium) GetIsSwipeNavigationEnabled() (bool, error) { |
| 611 | if !HasCapability(e.webview2RuntimeVersion, SwipeNavigation) { |
| 612 | return false, UnsupportedCapabilityError |
| 613 | } |
| 614 | webview2Settings, err := e.webview.GetSettings() |
| 615 | if err != nil { |
| 616 | return false, err |
| 617 | } |
| 618 | webview2Settings6 := webview2Settings.GetICoreWebView2Settings6() |
| 619 | var result bool |
| 620 | result, err = webview2Settings6.GetIsSwipeNavigationEnabled() |
| 621 | if err != nil { |
| 622 | return false, err |
| 623 | } |
| 624 | return result, nil |
| 625 | } |
| 626 | |
| 627 | // PutIsGeneralAutofillEnabled controls whether autofill for information |
| 628 | // like names, street and email addresses, phone numbers, and arbitrary input |
| 629 | // is enabled. This excludes password and credit card information. When |
| 630 | // IsGeneralAutofillEnabled is false, no suggestions appear, and no new information |
| 631 | // is saved. When IsGeneralAutofillEnabled is true, information is saved, suggestions |
| 632 | // appear and clicking on one will populate the form fields. |
| 633 | // It will take effect immediately after setting. |
| 634 | // The default value is `FALSE`. |
| 635 | func (e *Chromium) PutIsGeneralAutofillEnabled(value bool) error { |
| 636 | if !HasCapability(e.webview2RuntimeVersion, GeneralAutofillEnabled) { |
| 637 | return UnsupportedCapabilityError |
| 638 | } |
| 639 | webview2Settings, err := e.webview.GetSettings() |
| 640 | if err != nil { |
| 641 | return err |
| 642 | } |
| 643 | webview2Settings4 := webview2Settings.GetICoreWebView2Settings4() |
| 644 | return webview2Settings4.PutIsGeneralAutofillEnabled(value) |
| 645 | } |
| 646 | |
| 647 | // PutIsPasswordAutosaveEnabled sets whether the browser should offer to save passwords and other |
| 648 | // identifying information entered into forms automatically. |
| 649 | // The default value is `FALSE`. |
| 650 | func (e *Chromium) PutIsPasswordAutosaveEnabled(value bool) error { |
| 651 | if !HasCapability(e.webview2RuntimeVersion, PasswordAutosaveEnabled) { |
| 652 | return UnsupportedCapabilityError |
| 653 | } |
| 654 | webview2Settings, err := e.webview.GetSettings() |
| 655 | if err != nil { |
| 656 | return err |
| 657 | } |
| 658 | webview2Settings4 := webview2Settings.GetICoreWebView2Settings4() |
| 659 | return webview2Settings4.PutIsPasswordAutosaveEnabled(value) |
| 660 | } |
| 661 | |
| 662 | func (e *Chromium) PutIsSwipeNavigationEnabled(enabled bool) error { |
| 663 | if !HasCapability(e.webview2RuntimeVersion, SwipeNavigation) { |
| 664 | return UnsupportedCapabilityError |
| 665 | } |
| 666 | webview2Settings, err := e.webview.GetSettings() |
| 667 | if err != nil { |
| 668 | return err |
| 669 | } |
| 670 | webview2Settings6 := webview2Settings.GetICoreWebView2Settings6() |
| 671 | err = webview2Settings6.PutIsSwipeNavigationEnabled(enabled) |
| 672 | if err != nil { |
| 673 | return err |
| 674 | } |
| 675 | return nil |
| 676 | } |
| 677 | |
| 678 | func (e *Chromium) AllowExternalDrag(allow bool) error { |
| 679 | if !HasCapability(e.webview2RuntimeVersion, AllowExternalDrop) { |
| 680 | return UnsupportedCapabilityError |
| 681 | } |
| 682 | controller := e.GetController() |
| 683 | controller4 := controller.GetICoreWebView2Controller4() |
| 684 | err := controller4.PutAllowExternalDrop(allow) |
| 685 | if err != nil { |
| 686 | return err |
| 687 | } |
| 688 | return nil |
| 689 | } |
| 690 | |
| 691 | func (e *Chromium) GetAllowExternalDrag() (bool, error) { |
| 692 | if !HasCapability(e.webview2RuntimeVersion, AllowExternalDrop) { |
| 693 | return false, UnsupportedCapabilityError |
| 694 | } |
| 695 | controller := e.GetController() |
| 696 | controller4 := controller.GetICoreWebView2Controller4() |
| 697 | result, err := controller4.GetAllowExternalDrop() |
| 698 | if err != nil { |
| 699 | return false, err |
| 700 | } |
| 701 | return result, nil |
| 702 | } |
| 703 | |
| 704 | func (e *Chromium) GetCookieManager() (*ICoreWebView2CookieManager, error) { |
| 705 | if e.webview == nil { |
| 706 | return nil, errors.New("webview not initialized") |
| 707 | } |
| 708 | |
| 709 | // Check WebView2 version |
| 710 | if e.webview2RuntimeVersion == "" { |
| 711 | return nil, errors.New("WebView2 runtime version not available") |
| 712 | } |
| 713 | |
| 714 | // Get ICoreWebView2_2 interface |
| 715 | webview2, err := e.webview.QueryInterface2() |
| 716 | if err != nil { |
| 717 | return nil, fmt.Errorf("failed to get ICoreWebView2_2: %w\nThis functionality requires WebView2 Runtime version 89.0.721.0 or later. Current version: %s", err, e.webview2RuntimeVersion) |
| 718 | } |
| 719 | defer webview2.Release() |
| 720 | |
| 721 | // Get cookie manager |
| 722 | cookieManager, err := webview2.GetCookieManager() |
| 723 | if err != nil { |
| 724 | return nil, fmt.Errorf("failed to get cookie manager: %w", err) |
| 725 | } |
| 726 | |
| 727 | // Note: The caller is responsible for calling Release() on the returned cookieManager |
| 728 | return cookieManager, nil |
| 729 | } |
| 730 |