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electron_api_web_contents.cc
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electron_api_web_contents.cc
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// Copyright (c) 2014 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/browser/api/electron_api_web_contents.h"
#include <limits>
#include <memory>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include "base/containers/contains.h"
#include "base/containers/fixed_flat_map.h"
#include "base/containers/id_map.h"
#include "base/files/file_util.h"
#include "base/json/json_reader.h"
#include "base/no_destructor.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task/current_thread.h"
#include "base/task/thread_pool.h"
#include "base/threading/scoped_blocking_call.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/ui/exclusive_access/exclusive_access_manager.h"
#include "chrome/browser/ui/views/eye_dropper/eye_dropper.h"
#include "chrome/common/pref_names.h"
#include "components/embedder_support/user_agent_utils.h"
#include "components/prefs/pref_service.h"
#include "components/prefs/scoped_user_pref_update.h"
#include "components/security_state/content/content_utils.h"
#include "components/security_state/core/security_state.h"
#include "content/browser/renderer_host/frame_tree_node.h" // nogncheck
#include "content/browser/renderer_host/render_frame_host_manager.h" // nogncheck
#include "content/browser/renderer_host/render_widget_host_impl.h" // nogncheck
#include "content/browser/renderer_host/render_widget_host_view_base.h" // nogncheck
#include "content/public/browser/child_process_security_policy.h"
#include "content/public/browser/context_menu_params.h"
#include "content/public/browser/desktop_media_id.h"
#include "content/public/browser/desktop_streams_registry.h"
#include "content/public/browser/download_request_utils.h"
#include "content/public/browser/favicon_status.h"
#include "content/public/browser/file_select_listener.h"
#include "content/public/browser/native_web_keyboard_event.h"
#include "content/public/browser/navigation_details.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/render_widget_host.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/service_worker_context.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/storage_partition.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/referrer_type_converters.h"
#include "content/public/common/result_codes.h"
#include "content/public/common/webplugininfo.h"
#include "electron/buildflags/buildflags.h"
#include "electron/shell/common/api/api.mojom.h"
#include "gin/arguments.h"
#include "gin/data_object_builder.h"
#include "gin/handle.h"
#include "gin/object_template_builder.h"
#include "gin/wrappable.h"
#include "media/base/mime_util.h"
#include "mojo/public/cpp/bindings/associated_remote.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "mojo/public/cpp/system/platform_handle.h"
#include "ppapi/buildflags/buildflags.h"
#include "printing/buildflags/buildflags.h"
#include "printing/print_job_constants.h"
#include "services/resource_coordinator/public/cpp/memory_instrumentation/memory_instrumentation.h"
#include "services/service_manager/public/cpp/interface_provider.h"
#include "shell/browser/api/electron_api_browser_window.h"
#include "shell/browser/api/electron_api_debugger.h"
#include "shell/browser/api/electron_api_session.h"
#include "shell/browser/api/electron_api_web_frame_main.h"
#include "shell/browser/api/message_port.h"
#include "shell/browser/browser.h"
#include "shell/browser/child_web_contents_tracker.h"
#include "shell/browser/electron_autofill_driver_factory.h"
#include "shell/browser/electron_browser_client.h"
#include "shell/browser/electron_browser_context.h"
#include "shell/browser/electron_browser_main_parts.h"
#include "shell/browser/electron_javascript_dialog_manager.h"
#include "shell/browser/electron_navigation_throttle.h"
#include "shell/browser/file_select_helper.h"
#include "shell/browser/native_window.h"
#include "shell/browser/session_preferences.h"
#include "shell/browser/ui/drag_util.h"
#include "shell/browser/ui/file_dialog.h"
#include "shell/browser/ui/inspectable_web_contents.h"
#include "shell/browser/ui/inspectable_web_contents_view.h"
#include "shell/browser/web_contents_permission_helper.h"
#include "shell/browser/web_contents_preferences.h"
#include "shell/browser/web_contents_zoom_controller.h"
#include "shell/browser/web_view_guest_delegate.h"
#include "shell/browser/web_view_manager.h"
#include "shell/common/api/electron_api_native_image.h"
#include "shell/common/api/electron_bindings.h"
#include "shell/common/color_util.h"
#include "shell/common/electron_constants.h"
#include "shell/common/gin_converters/base_converter.h"
#include "shell/common/gin_converters/blink_converter.h"
#include "shell/common/gin_converters/callback_converter.h"
#include "shell/common/gin_converters/content_converter.h"
#include "shell/common/gin_converters/file_path_converter.h"
#include "shell/common/gin_converters/frame_converter.h"
#include "shell/common/gin_converters/gfx_converter.h"
#include "shell/common/gin_converters/gurl_converter.h"
#include "shell/common/gin_converters/image_converter.h"
#include "shell/common/gin_converters/net_converter.h"
#include "shell/common/gin_converters/optional_converter.h"
#include "shell/common/gin_converters/value_converter.h"
#include "shell/common/gin_helper/dictionary.h"
#include "shell/common/gin_helper/object_template_builder.h"
#include "shell/common/language_util.h"
#include "shell/common/node_includes.h"
#include "shell/common/options_switches.h"
#include "shell/common/process_util.h"
#include "shell/common/thread_restrictions.h"
#include "shell/common/v8_value_serializer.h"
#include "storage/browser/file_system/isolated_context.h"
#include "third_party/abseil-cpp/absl/types/optional.h"
#include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h"
#include "third_party/blink/public/common/input/web_input_event.h"
#include "third_party/blink/public/common/messaging/transferable_message_mojom_traits.h"
#include "third_party/blink/public/common/page/page_zoom.h"
#include "third_party/blink/public/mojom/frame/find_in_page.mojom.h"
#include "third_party/blink/public/mojom/frame/fullscreen.mojom.h"
#include "third_party/blink/public/mojom/messaging/transferable_message.mojom.h"
#include "third_party/blink/public/mojom/renderer_preferences.mojom.h"
#include "ui/base/cursor/cursor.h"
#include "ui/base/cursor/mojom/cursor_type.mojom-shared.h"
#include "ui/display/screen.h"
#include "ui/events/base_event_utils.h"
#if BUILDFLAG(ENABLE_OSR)
#include "shell/browser/osr/osr_render_widget_host_view.h"
#include "shell/browser/osr/osr_web_contents_view.h"
#endif
#if BUILDFLAG(IS_WIN)
#include "shell/browser/native_window_views.h"
#endif
#if !BUILDFLAG(IS_MAC)
#include "ui/aura/window.h"
#else
#include "ui/base/cocoa/defaults_utils.h"
#endif
#if BUILDFLAG(IS_LINUX)
#include "ui/linux/linux_ui.h"
#endif
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_WIN)
#include "ui/gfx/font_render_params.h"
#endif
#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
#include "extensions/browser/script_executor.h"
#include "extensions/browser/view_type_utils.h"
#include "extensions/common/mojom/view_type.mojom.h"
#include "shell/browser/extensions/electron_extension_web_contents_observer.h"
#endif
#if BUILDFLAG(ENABLE_PRINTING)
#include "chrome/browser/printing/print_view_manager_base.h"
#include "components/printing/browser/print_manager_utils.h"
#include "components/printing/browser/print_to_pdf/pdf_print_result.h"
#include "components/printing/browser/print_to_pdf/pdf_print_utils.h"
#include "printing/backend/print_backend.h" // nogncheck
#include "printing/mojom/print.mojom.h" // nogncheck
#include "printing/page_range.h"
#include "shell/browser/printing/print_view_manager_electron.h"
#if BUILDFLAG(IS_WIN)
#include "printing/backend/win_helper.h"
#endif
#endif // BUILDFLAG(ENABLE_PRINTING)
#if BUILDFLAG(ENABLE_PICTURE_IN_PICTURE)
#include "chrome/browser/picture_in_picture/picture_in_picture_window_manager.h"
#endif
#if BUILDFLAG(ENABLE_PDF_VIEWER)
#include "components/pdf/browser/pdf_web_contents_helper.h" // nogncheck
#include "shell/browser/electron_pdf_web_contents_helper_client.h"
#endif
#if BUILDFLAG(ENABLE_PLUGINS)
#include "content/public/browser/plugin_service.h"
#endif
#if !IS_MAS_BUILD()
#include "chrome/browser/hang_monitor/hang_crash_dump.h" // nogncheck
#endif
namespace gin {
#if BUILDFLAG(ENABLE_PRINTING)
template <>
struct Converter<printing::mojom::MarginType> {
static bool FromV8(v8::Isolate* isolate,
v8::Local<v8::Value> val,
printing::mojom::MarginType* out) {
using Val = printing::mojom::MarginType;
static constexpr auto Lookup =
base::MakeFixedFlatMapSorted<base::StringPiece, Val>({
{"custom", Val::kCustomMargins},
{"default", Val::kDefaultMargins},
{"none", Val::kNoMargins},
{"printableArea", Val::kPrintableAreaMargins},
});
return FromV8WithLookup(isolate, val, Lookup, out);
}
};
template <>
struct Converter<printing::mojom::DuplexMode> {
static bool FromV8(v8::Isolate* isolate,
v8::Local<v8::Value> val,
printing::mojom::DuplexMode* out) {
using Val = printing::mojom::DuplexMode;
static constexpr auto Lookup =
base::MakeFixedFlatMapSorted<base::StringPiece, Val>({
{"longEdge", Val::kLongEdge},
{"shortEdge", Val::kShortEdge},
{"simplex", Val::kSimplex},
});
return FromV8WithLookup(isolate, val, Lookup, out);
}
};
#endif
template <>
struct Converter<WindowOpenDisposition> {
static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
WindowOpenDisposition val) {
std::string disposition = "other";
switch (val) {
case WindowOpenDisposition::CURRENT_TAB:
disposition = "default";
break;
case WindowOpenDisposition::NEW_FOREGROUND_TAB:
disposition = "foreground-tab";
break;
case WindowOpenDisposition::NEW_BACKGROUND_TAB:
disposition = "background-tab";
break;
case WindowOpenDisposition::NEW_POPUP:
case WindowOpenDisposition::NEW_WINDOW:
disposition = "new-window";
break;
case WindowOpenDisposition::SAVE_TO_DISK:
disposition = "save-to-disk";
break;
default:
break;
}
return gin::ConvertToV8(isolate, disposition);
}
};
template <>
struct Converter<content::SavePageType> {
static bool FromV8(v8::Isolate* isolate,
v8::Local<v8::Value> val,
content::SavePageType* out) {
using Val = content::SavePageType;
static constexpr auto Lookup =
base::MakeFixedFlatMapSorted<base::StringPiece, Val>({
{"htmlcomplete", Val::SAVE_PAGE_TYPE_AS_COMPLETE_HTML},
{"htmlonly", Val::SAVE_PAGE_TYPE_AS_ONLY_HTML},
{"mhtml", Val::SAVE_PAGE_TYPE_AS_MHTML},
});
return FromV8WithLowerLookup(isolate, val, Lookup, out);
}
};
template <>
struct Converter<electron::api::WebContents::Type> {
static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
electron::api::WebContents::Type val) {
using Type = electron::api::WebContents::Type;
std::string type;
switch (val) {
case Type::kBackgroundPage:
type = "backgroundPage";
break;
case Type::kBrowserWindow:
type = "window";
break;
case Type::kBrowserView:
type = "browserView";
break;
case Type::kRemote:
type = "remote";
break;
case Type::kWebView:
type = "webview";
break;
case Type::kOffScreen:
type = "offscreen";
break;
default:
break;
}
return gin::ConvertToV8(isolate, type);
}
static bool FromV8(v8::Isolate* isolate,
v8::Local<v8::Value> val,
electron::api::WebContents::Type* out) {
using Val = electron::api::WebContents::Type;
// clang-format off
static constexpr auto Lookup =
base::MakeFixedFlatMapSorted<base::StringPiece, Val>({
{"backgroundPage", Val::kBackgroundPage},
{"browserView", Val::kBrowserView},
#if BUILDFLAG(ENABLE_OSR)
{"offscreen", Val::kOffScreen},
#endif
{"webview", Val::kWebView},
});
// clang-format on
return FromV8WithLookup(isolate, val, Lookup, out);
}
};
template <>
struct Converter<scoped_refptr<content::DevToolsAgentHost>> {
static v8::Local<v8::Value> ToV8(
v8::Isolate* isolate,
const scoped_refptr<content::DevToolsAgentHost>& val) {
gin_helper::Dictionary dict(isolate, v8::Object::New(isolate));
dict.Set("id", val->GetId());
dict.Set("url", val->GetURL().spec());
return dict.GetHandle();
}
};
} // namespace gin
namespace electron::api {
namespace {
constexpr base::StringPiece CursorTypeToString(
ui::mojom::CursorType cursor_type) {
switch (cursor_type) {
case ui::mojom::CursorType::kPointer:
return "pointer";
case ui::mojom::CursorType::kCross:
return "crosshair";
case ui::mojom::CursorType::kHand:
return "hand";
case ui::mojom::CursorType::kIBeam:
return "text";
case ui::mojom::CursorType::kWait:
return "wait";
case ui::mojom::CursorType::kHelp:
return "help";
case ui::mojom::CursorType::kEastResize:
return "e-resize";
case ui::mojom::CursorType::kNorthResize:
return "n-resize";
case ui::mojom::CursorType::kNorthEastResize:
return "ne-resize";
case ui::mojom::CursorType::kNorthWestResize:
return "nw-resize";
case ui::mojom::CursorType::kSouthResize:
return "s-resize";
case ui::mojom::CursorType::kSouthEastResize:
return "se-resize";
case ui::mojom::CursorType::kSouthWestResize:
return "sw-resize";
case ui::mojom::CursorType::kWestResize:
return "w-resize";
case ui::mojom::CursorType::kNorthSouthResize:
return "ns-resize";
case ui::mojom::CursorType::kEastWestResize:
return "ew-resize";
case ui::mojom::CursorType::kNorthEastSouthWestResize:
return "nesw-resize";
case ui::mojom::CursorType::kNorthWestSouthEastResize:
return "nwse-resize";
case ui::mojom::CursorType::kColumnResize:
return "col-resize";
case ui::mojom::CursorType::kRowResize:
return "row-resize";
case ui::mojom::CursorType::kMiddlePanning:
return "m-panning";
case ui::mojom::CursorType::kMiddlePanningVertical:
return "m-panning-vertical";
case ui::mojom::CursorType::kMiddlePanningHorizontal:
return "m-panning-horizontal";
case ui::mojom::CursorType::kEastPanning:
return "e-panning";
case ui::mojom::CursorType::kNorthPanning:
return "n-panning";
case ui::mojom::CursorType::kNorthEastPanning:
return "ne-panning";
case ui::mojom::CursorType::kNorthWestPanning:
return "nw-panning";
case ui::mojom::CursorType::kSouthPanning:
return "s-panning";
case ui::mojom::CursorType::kSouthEastPanning:
return "se-panning";
case ui::mojom::CursorType::kSouthWestPanning:
return "sw-panning";
case ui::mojom::CursorType::kWestPanning:
return "w-panning";
case ui::mojom::CursorType::kMove:
return "move";
case ui::mojom::CursorType::kVerticalText:
return "vertical-text";
case ui::mojom::CursorType::kCell:
return "cell";
case ui::mojom::CursorType::kContextMenu:
return "context-menu";
case ui::mojom::CursorType::kAlias:
return "alias";
case ui::mojom::CursorType::kProgress:
return "progress";
case ui::mojom::CursorType::kNoDrop:
return "nodrop";
case ui::mojom::CursorType::kCopy:
return "copy";
case ui::mojom::CursorType::kNone:
return "none";
case ui::mojom::CursorType::kNotAllowed:
return "not-allowed";
case ui::mojom::CursorType::kZoomIn:
return "zoom-in";
case ui::mojom::CursorType::kZoomOut:
return "zoom-out";
case ui::mojom::CursorType::kGrab:
return "grab";
case ui::mojom::CursorType::kGrabbing:
return "grabbing";
case ui::mojom::CursorType::kCustom:
return "custom";
case ui::mojom::CursorType::kNull:
return "null";
case ui::mojom::CursorType::kDndNone:
return "drag-drop-none";
case ui::mojom::CursorType::kDndMove:
return "drag-drop-move";
case ui::mojom::CursorType::kDndCopy:
return "drag-drop-copy";
case ui::mojom::CursorType::kDndLink:
return "drag-drop-link";
case ui::mojom::CursorType::kNorthSouthNoResize:
return "ns-no-resize";
case ui::mojom::CursorType::kEastWestNoResize:
return "ew-no-resize";
case ui::mojom::CursorType::kNorthEastSouthWestNoResize:
return "nesw-no-resize";
case ui::mojom::CursorType::kNorthWestSouthEastNoResize:
return "nwse-no-resize";
default:
return "default";
}
}
base::IDMap<WebContents*>& GetAllWebContents() {
static base::NoDestructor<base::IDMap<WebContents*>> s_all_web_contents;
return *s_all_web_contents;
}
void OnCapturePageDone(gin_helper::Promise<gfx::Image> promise,
base::ScopedClosureRunner capture_handle,
const SkBitmap& bitmap) {
// Hack to enable transparency in captured image
promise.Resolve(gfx::Image::CreateFrom1xBitmap(bitmap));
capture_handle.RunAndReset();
}
absl::optional<base::TimeDelta> GetCursorBlinkInterval() {
#if BUILDFLAG(IS_MAC)
absl::optional<base::TimeDelta> system_value(
ui::TextInsertionCaretBlinkPeriodFromDefaults());
if (system_value)
return *system_value;
#elif BUILDFLAG(IS_LINUX)
if (auto* linux_ui = ui::LinuxUi::instance())
return linux_ui->GetCursorBlinkInterval();
#elif BUILDFLAG(IS_WIN)
const auto system_msec = ::GetCaretBlinkTime();
if (system_msec != 0) {
return (system_msec == INFINITE) ? base::TimeDelta()
: base::Milliseconds(system_msec);
}
#endif
return absl::nullopt;
}
#if BUILDFLAG(ENABLE_PRINTING)
// This will return false if no printer with the provided device_name can be
// found on the network. We need to check this because Chromium does not do
// sanity checking of device_name validity and so will crash on invalid names.
bool IsDeviceNameValid(const std::u16string& device_name) {
#if BUILDFLAG(IS_MAC)
base::ScopedCFTypeRef<CFStringRef> new_printer_id(
base::SysUTF16ToCFStringRef(device_name));
PMPrinter new_printer = PMPrinterCreateFromPrinterID(new_printer_id.get());
bool printer_exists = new_printer != nullptr;
PMRelease(new_printer);
return printer_exists;
#else
scoped_refptr<printing::PrintBackend> print_backend =
printing::PrintBackend::CreateInstance(
g_browser_process->GetApplicationLocale());
return print_backend->IsValidPrinter(base::UTF16ToUTF8(device_name));
#endif
}
// This function returns a validated device name.
// If the user passed one to webContents.print(), we check that it's valid and
// return it or fail if the network doesn't recognize it. If the user didn't
// pass a device name, we first try to return the system default printer. If one
// isn't set, then pull all the printers and use the first one or fail if none
// exist.
std::pair<std::string, std::u16string> GetDeviceNameToUse(
const std::u16string& device_name) {
#if BUILDFLAG(IS_WIN)
// Blocking is needed here because Windows printer drivers are oftentimes
// not thread-safe and have to be accessed on the UI thread.
ScopedAllowBlockingForElectron allow_blocking;
#endif
if (!device_name.empty()) {
if (!IsDeviceNameValid(device_name))
return std::make_pair("Invalid deviceName provided", std::u16string());
return std::make_pair(std::string(), device_name);
}
scoped_refptr<printing::PrintBackend> print_backend =
printing::PrintBackend::CreateInstance(
g_browser_process->GetApplicationLocale());
std::string printer_name;
printing::mojom::ResultCode code =
print_backend->GetDefaultPrinterName(printer_name);
// We don't want to return if this fails since some devices won't have a
// default printer.
if (code != printing::mojom::ResultCode::kSuccess)
LOG(ERROR) << "Failed to get default printer name";
if (printer_name.empty()) {
printing::PrinterList printers;
if (print_backend->EnumeratePrinters(printers) !=
printing::mojom::ResultCode::kSuccess)
return std::make_pair("Failed to enumerate printers", std::u16string());
if (printers.empty())
return std::make_pair("No printers available on the network",
std::u16string());
printer_name = printers.front().printer_name;
}
return std::make_pair(std::string(), base::UTF8ToUTF16(printer_name));
}
// Copied from
// chrome/browser/ui/webui/print_preview/local_printer_handler_default.cc:L36-L54
scoped_refptr<base::TaskRunner> CreatePrinterHandlerTaskRunner() {
// USER_VISIBLE because the result is displayed in the print preview dialog.
#if !BUILDFLAG(IS_WIN)
static constexpr base::TaskTraits kTraits = {
base::MayBlock(), base::TaskPriority::USER_VISIBLE};
#endif
#if defined(USE_CUPS)
// CUPS is thread safe.
return base::ThreadPool::CreateTaskRunner(kTraits);
#elif BUILDFLAG(IS_WIN)
// Windows drivers are likely not thread-safe and need to be accessed on the
// UI thread.
return content::GetUIThreadTaskRunner({base::TaskPriority::USER_VISIBLE});
#else
// Be conservative on unsupported platforms.
return base::ThreadPool::CreateSingleThreadTaskRunner(kTraits);
#endif
}
#endif
struct UserDataLink : public base::SupportsUserData::Data {
explicit UserDataLink(base::WeakPtr<WebContents> contents)
: web_contents(contents) {}
base::WeakPtr<WebContents> web_contents;
};
const void* kElectronApiWebContentsKey = &kElectronApiWebContentsKey;
const char kRootName[] = "<root>";
struct FileSystem {
FileSystem() = default;
FileSystem(const std::string& type,
const std::string& file_system_name,
const std::string& root_url,
const std::string& file_system_path)
: type(type),
file_system_name(file_system_name),
root_url(root_url),
file_system_path(file_system_path) {}
std::string type;
std::string file_system_name;
std::string root_url;
std::string file_system_path;
};
std::string RegisterFileSystem(content::WebContents* web_contents,
const base::FilePath& path) {
auto* isolated_context = storage::IsolatedContext::GetInstance();
std::string root_name(kRootName);
storage::IsolatedContext::ScopedFSHandle file_system =
isolated_context->RegisterFileSystemForPath(
storage::kFileSystemTypeLocal, std::string(), path, &root_name);
content::ChildProcessSecurityPolicy* policy =
content::ChildProcessSecurityPolicy::GetInstance();
content::RenderViewHost* render_view_host = web_contents->GetRenderViewHost();
int renderer_id = render_view_host->GetProcess()->GetID();
policy->GrantReadFileSystem(renderer_id, file_system.id());
policy->GrantWriteFileSystem(renderer_id, file_system.id());
policy->GrantCreateFileForFileSystem(renderer_id, file_system.id());
policy->GrantDeleteFromFileSystem(renderer_id, file_system.id());
if (!policy->CanReadFile(renderer_id, path))
policy->GrantReadFile(renderer_id, path);
return file_system.id();
}
FileSystem CreateFileSystemStruct(content::WebContents* web_contents,
const std::string& file_system_id,
const std::string& file_system_path,
const std::string& type) {
const GURL origin = web_contents->GetURL().DeprecatedGetOriginAsURL();
std::string file_system_name =
storage::GetIsolatedFileSystemName(origin, file_system_id);
std::string root_url = storage::GetIsolatedFileSystemRootURIString(
origin, file_system_id, kRootName);
return FileSystem(type, file_system_name, root_url, file_system_path);
}
base::Value::Dict CreateFileSystemValue(const FileSystem& file_system) {
base::Value::Dict value;
value.Set("type", file_system.type);
value.Set("fileSystemName", file_system.file_system_name);
value.Set("rootURL", file_system.root_url);
value.Set("fileSystemPath", file_system.file_system_path);
return value;
}
void WriteToFile(const base::FilePath& path, const std::string& content) {
base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
base::BlockingType::WILL_BLOCK);
DCHECK(!path.empty());
base::WriteFile(path, content.data(), content.size());
}
void AppendToFile(const base::FilePath& path, const std::string& content) {
base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
base::BlockingType::WILL_BLOCK);
DCHECK(!path.empty());
base::AppendToFile(path, content);
}
PrefService* GetPrefService(content::WebContents* web_contents) {
auto* context = web_contents->GetBrowserContext();
return static_cast<electron::ElectronBrowserContext*>(context)->prefs();
}
std::map<std::string, std::string> GetAddedFileSystemPaths(
content::WebContents* web_contents) {
auto* pref_service = GetPrefService(web_contents);
const base::Value::Dict& file_system_paths =
pref_service->GetDict(prefs::kDevToolsFileSystemPaths);
std::map<std::string, std::string> result;
for (auto it : file_system_paths) {
std::string type =
it.second.is_string() ? it.second.GetString() : std::string();
result[it.first] = type;
}
return result;
}
bool IsDevToolsFileSystemAdded(content::WebContents* web_contents,
const std::string& file_system_path) {
return base::Contains(GetAddedFileSystemPaths(web_contents),
file_system_path);
}
void SetBackgroundColor(content::RenderWidgetHostView* rwhv, SkColor color) {
rwhv->SetBackgroundColor(color);
static_cast<content::RenderWidgetHostViewBase*>(rwhv)
->SetContentBackgroundColor(color);
}
content::RenderFrameHost* GetRenderFrameHost(
content::NavigationHandle* navigation_handle) {
int frame_tree_node_id = navigation_handle->GetFrameTreeNodeId();
content::FrameTreeNode* frame_tree_node =
content::FrameTreeNode::GloballyFindByID(frame_tree_node_id);
content::RenderFrameHostManager* render_manager =
frame_tree_node->render_manager();
content::RenderFrameHost* frame_host = nullptr;
if (render_manager) {
frame_host = render_manager->speculative_frame_host();
if (!frame_host)
frame_host = render_manager->current_frame_host();
}
return frame_host;
}
} // namespace
#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
WebContents::Type GetTypeFromViewType(extensions::mojom::ViewType view_type) {
switch (view_type) {
case extensions::mojom::ViewType::kExtensionBackgroundPage:
return WebContents::Type::kBackgroundPage;
case extensions::mojom::ViewType::kAppWindow:
case extensions::mojom::ViewType::kComponent:
case extensions::mojom::ViewType::kExtensionDialog:
case extensions::mojom::ViewType::kExtensionPopup:
case extensions::mojom::ViewType::kBackgroundContents:
case extensions::mojom::ViewType::kExtensionGuest:
case extensions::mojom::ViewType::kTabContents:
case extensions::mojom::ViewType::kOffscreenDocument:
case extensions::mojom::ViewType::kExtensionSidePanel:
case extensions::mojom::ViewType::kInvalid:
return WebContents::Type::kRemote;
}
}
#endif
WebContents::WebContents(v8::Isolate* isolate,
content::WebContents* web_contents)
: content::WebContentsObserver(web_contents),
type_(Type::kRemote),
id_(GetAllWebContents().Add(this))
#if BUILDFLAG(ENABLE_PRINTING)
,
print_task_runner_(CreatePrinterHandlerTaskRunner())
#endif
{
#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
// WebContents created by extension host will have valid ViewType set.
extensions::mojom::ViewType view_type = extensions::GetViewType(web_contents);
if (view_type != extensions::mojom::ViewType::kInvalid) {
InitWithExtensionView(isolate, web_contents, view_type);
}
extensions::ElectronExtensionWebContentsObserver::CreateForWebContents(
web_contents);
script_executor_ = std::make_unique<extensions::ScriptExecutor>(web_contents);
#endif
auto session = Session::CreateFrom(isolate, GetBrowserContext());
session_.Reset(isolate, session.ToV8());
SetUserAgent(GetBrowserContext()->GetUserAgent());
web_contents->SetUserData(kElectronApiWebContentsKey,
std::make_unique<UserDataLink>(GetWeakPtr()));
InitZoomController(web_contents, gin::Dictionary::CreateEmpty(isolate));
}
WebContents::WebContents(v8::Isolate* isolate,
std::unique_ptr<content::WebContents> web_contents,
Type type)
: content::WebContentsObserver(web_contents.get()),
type_(type),
id_(GetAllWebContents().Add(this))
#if BUILDFLAG(ENABLE_PRINTING)
,
print_task_runner_(CreatePrinterHandlerTaskRunner())
#endif
{
DCHECK(type != Type::kRemote)
<< "Can't take ownership of a remote WebContents";
auto session = Session::CreateFrom(isolate, GetBrowserContext());
session_.Reset(isolate, session.ToV8());
InitWithSessionAndOptions(isolate, std::move(web_contents), session,
gin::Dictionary::CreateEmpty(isolate));
}
WebContents::WebContents(v8::Isolate* isolate,
const gin_helper::Dictionary& options)
: id_(GetAllWebContents().Add(this))
#if BUILDFLAG(ENABLE_PRINTING)
,
print_task_runner_(CreatePrinterHandlerTaskRunner())
#endif
{
// Read options.
options.Get("backgroundThrottling", &background_throttling_);
// Get type
options.Get("type", &type_);
#if BUILDFLAG(ENABLE_OSR)
bool b = false;
if (options.Get(options::kOffscreen, &b) && b)
type_ = Type::kOffScreen;
#endif
// Init embedder earlier
options.Get("embedder", &embedder_);
// Whether to enable DevTools.
options.Get("devTools", &enable_devtools_);
// BrowserViews are not attached to a window initially so they should start
// off as hidden. This is also important for compositor recycling. See:
// https://github.com/electron/electron/pull/21372
bool initially_shown = type_ != Type::kBrowserView;
options.Get(options::kShow, &initially_shown);
// Obtain the session.
std::string partition;
gin::Handle<api::Session> session;
if (options.Get("session", &session) && !session.IsEmpty()) {
} else if (options.Get("partition", &partition)) {
session = Session::FromPartition(isolate, partition);
} else {
// Use the default session if not specified.
session = Session::FromPartition(isolate, "");
}
session_.Reset(isolate, session.ToV8());
std::unique_ptr<content::WebContents> web_contents;
if (IsGuest()) {
scoped_refptr<content::SiteInstance> site_instance =
content::SiteInstance::CreateForURL(session->browser_context(),
GURL("chrome-guest://fake-host"));
content::WebContents::CreateParams params(session->browser_context(),
site_instance);
guest_delegate_ =
std::make_unique<WebViewGuestDelegate>(embedder_->web_contents(), this);
params.guest_delegate = guest_delegate_.get();
#if BUILDFLAG(ENABLE_OSR)
if (embedder_ && embedder_->IsOffScreen()) {
auto* view = new OffScreenWebContentsView(
false,
base::BindRepeating(&WebContents::OnPaint, base::Unretained(this)));
params.view = view;
params.delegate_view = view;
web_contents = content::WebContents::Create(params);
view->SetWebContents(web_contents.get());
} else {
#endif
web_contents = content::WebContents::Create(params);
#if BUILDFLAG(ENABLE_OSR)
}
} else if (IsOffScreen()) {
// webPreferences does not have a transparent option, so if the window needs
// to be transparent, that will be set at electron_api_browser_window.cc#L57
// and we then need to pull it back out and check it here.
std::string background_color;
options.GetHidden(options::kBackgroundColor, &background_color);
bool transparent = ParseCSSColor(background_color) == SK_ColorTRANSPARENT;
content::WebContents::CreateParams params(session->browser_context());
auto* view = new OffScreenWebContentsView(
transparent,
base::BindRepeating(&WebContents::OnPaint, base::Unretained(this)));
params.view = view;
params.delegate_view = view;
web_contents = content::WebContents::Create(params);
view->SetWebContents(web_contents.get());
#endif
} else {
content::WebContents::CreateParams params(session->browser_context());
params.initially_hidden = !initially_shown;
web_contents = content::WebContents::Create(params);
}
InitWithSessionAndOptions(isolate, std::move(web_contents), session, options);
}
void WebContents::InitZoomController(content::WebContents* web_contents,
const gin_helper::Dictionary& options) {
WebContentsZoomController::CreateForWebContents(web_contents);
zoom_controller_ = WebContentsZoomController::FromWebContents(web_contents);
double zoom_factor;
if (options.Get(options::kZoomFactor, &zoom_factor))
zoom_controller_->SetDefaultZoomFactor(zoom_factor);
// Nothing to do with ZoomController, but this function gets called in all
// init cases!
content::RenderViewHost* host = web_contents->GetRenderViewHost();
if (host)
host->GetWidget()->AddInputEventObserver(this);
}
void WebContents::InitWithSessionAndOptions(
v8::Isolate* isolate,
std::unique_ptr<content::WebContents> owned_web_contents,
gin::Handle<api::Session> session,
const gin_helper::Dictionary& options) {
Observe(owned_web_contents.get());
InitWithWebContents(std::move(owned_web_contents), session->browser_context(),
IsGuest());
inspectable_web_contents_->GetView()->SetDelegate(this);
auto* prefs = web_contents()->GetMutableRendererPrefs();
// Collect preferred languages from OS and browser process. accept_languages
// effects HTTP header, navigator.languages, and CJK fallback font selection.
//
// Note that an application locale set to the browser process might be
// different with the one set to the preference list.
// (e.g. overridden with --lang)
std::string accept_languages =
g_browser_process->GetApplicationLocale() + ",";
for (auto const& language : electron::GetPreferredLanguages()) {
if (language == g_browser_process->GetApplicationLocale())
continue;
accept_languages += language + ",";
}
accept_languages.pop_back();
prefs->accept_languages = accept_languages;
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_WIN)
// Update font settings.
static const gfx::FontRenderParams params(
gfx::GetFontRenderParams(gfx::FontRenderParamsQuery(), nullptr));
prefs->should_antialias_text = params.antialiasing;
prefs->use_subpixel_positioning = params.subpixel_positioning;
prefs->hinting = params.hinting;
prefs->use_autohinter = params.autohinter;
prefs->use_bitmaps = params.use_bitmaps;
prefs->subpixel_rendering = params.subpixel_rendering;
#endif
// Honor the system's cursor blink rate settings
if (auto interval = GetCursorBlinkInterval())
prefs->caret_blink_interval = *interval;
// Save the preferences in C++.
// If there's already a WebContentsPreferences object, we created it as part
// of the webContents.setWindowOpenHandler path, so don't overwrite it.
if (!WebContentsPreferences::From(web_contents())) {
new WebContentsPreferences(web_contents(), options);
}
// Trigger re-calculation of webkit prefs.
web_contents()->NotifyPreferencesChanged();
WebContentsPermissionHelper::CreateForWebContents(web_contents());
InitZoomController(web_contents(), options);
#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
extensions::ElectronExtensionWebContentsObserver::CreateForWebContents(
web_contents());
script_executor_ =
std::make_unique<extensions::ScriptExecutor>(web_contents());
#endif
AutofillDriverFactory::CreateForWebContents(web_contents());
SetUserAgent(GetBrowserContext()->GetUserAgent());
if (IsGuest()) {
NativeWindow* owner_window = nullptr;
if (embedder_) {
// New WebContents's owner_window is the embedder's owner_window.
auto* relay =
NativeWindowRelay::FromWebContents(embedder_->web_contents());
if (relay)
owner_window = relay->GetNativeWindow();
}
if (owner_window)
SetOwnerWindow(owner_window);
}
web_contents()->SetUserData(kElectronApiWebContentsKey,
std::make_unique<UserDataLink>(GetWeakPtr()));