cef/libcef/browser/browser_platform_delegate.cc

630 lines
18 KiB
C++

// Copyright 2015 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 "cef/libcef/browser/browser_platform_delegate.h"
#include "base/command_line.h"
#include "base/logging.h"
#include "cef/include/views/cef_window.h"
#include "cef/include/views/cef_window_delegate.h"
#include "cef/libcef/browser/browser_host_base.h"
#include "cef/libcef/browser/thread_util.h"
#include "cef/libcef/browser/views/browser_view_impl.h"
#include "cef/libcef/common/cef_switches.h"
#include "chrome/browser/platform_util.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/shell_integration.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "components/prefs/pref_service.h"
#include "content/browser/web_contents/web_contents_impl.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"
namespace {
void ExecuteExternalProtocol(const GURL& url) {
CEF_REQUIRE_BLOCKING();
// Check that an application is associated with the scheme.
if (shell_integration::GetApplicationNameForScheme(url).empty()) {
return;
}
CEF_POST_TASK(TID_UI, base::BindOnce(&platform_util::OpenExternal, url));
}
// Default popup window delegate implementation.
class PopupWindowDelegate : public CefWindowDelegate {
public:
explicit PopupWindowDelegate(CefRefPtr<CefBrowserView> browser_view)
: browser_view_(browser_view) {}
PopupWindowDelegate(const PopupWindowDelegate&) = delete;
PopupWindowDelegate& operator=(const PopupWindowDelegate&) = delete;
void OnWindowCreated(CefRefPtr<CefWindow> window) override {
window->AddChildView(browser_view_);
window->Show();
browser_view_->RequestFocus();
}
void OnWindowDestroyed(CefRefPtr<CefWindow> window) override {
browser_view_ = nullptr;
}
bool CanClose(CefRefPtr<CefWindow> window) override {
CefRefPtr<CefBrowser> browser = browser_view_->GetBrowser();
if (browser) {
return browser->GetHost()->TryCloseBrowser();
}
return true;
}
cef_runtime_style_t GetWindowRuntimeStyle() override {
return browser_view_->GetRuntimeStyle();
}
private:
CefRefPtr<CefBrowserView> browser_view_;
IMPLEMENT_REFCOUNTING(PopupWindowDelegate);
};
} // namespace
CefBrowserPlatformDelegate::CefBrowserPlatformDelegate() = default;
CefBrowserPlatformDelegate::~CefBrowserPlatformDelegate() {
DCHECK(!browser_);
}
content::WebContents* CefBrowserPlatformDelegate::CreateWebContents(
CefBrowserCreateParams& create_params,
bool& own_web_contents) {
DCHECK(false);
return nullptr;
}
void CefBrowserPlatformDelegate::CreateViewForWebContents(
raw_ptr<content::WebContentsView>* view,
raw_ptr<content::RenderViewHostDelegateView>* delegate_view) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::WebContentsCreated(
content::WebContents* web_contents,
bool owned) {
// We should not have a browser at this point.
DCHECK(!browser_);
DCHECK(!web_contents_);
web_contents_ = web_contents;
}
void CefBrowserPlatformDelegate::AddNewContents(
content::WebContents* source,
std::unique_ptr<content::WebContents> new_contents,
const GURL& target_url,
WindowOpenDisposition disposition,
const blink::mojom::WindowFeatures& window_features,
bool user_gesture,
bool* was_blocked) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::WebContentsDestroyed(
content::WebContents* web_contents) {
DCHECK(web_contents_ && web_contents_ == web_contents);
web_contents_ = nullptr;
}
void CefBrowserPlatformDelegate::RenderViewCreated(
content::RenderViewHost* render_view_host) {
// Indicate that the view has an external parent (namely us). This setting is
// required for proper focus handling on Windows and Linux.
if (HasExternalParent() && render_view_host->GetWidget()->GetView()) {
render_view_host->GetWidget()->GetView()->SetHasExternalParent(true);
}
}
void CefBrowserPlatformDelegate::RenderViewReady() {}
void CefBrowserPlatformDelegate::BrowserCreated(CefBrowserHostBase* browser) {
// We should have an associated WebContents at this point.
DCHECK(web_contents_);
DCHECK(!browser_);
DCHECK(browser);
browser_ = browser;
}
void CefBrowserPlatformDelegate::NotifyBrowserCreated() {}
void CefBrowserPlatformDelegate::NotifyBrowserDestroyed() {}
void CefBrowserPlatformDelegate::BrowserDestroyed(CefBrowserHostBase* browser) {
// WebContentsDestroyed should already be called.
DCHECK(!web_contents_);
DCHECK(browser_ && browser_ == browser);
browser_ = nullptr;
}
bool CefBrowserPlatformDelegate::CreateHostWindow() {
DCHECK(false);
return true;
}
void CefBrowserPlatformDelegate::CloseHostWindow() {
DCHECK(false);
}
CefWindowHandle CefBrowserPlatformDelegate::GetHostWindowHandle() const {
DCHECK(false);
return kNullWindowHandle;
}
views::Widget* CefBrowserPlatformDelegate::GetWindowWidget() const {
DCHECK(false);
return nullptr;
}
CefRefPtr<CefBrowserView> CefBrowserPlatformDelegate::GetBrowserView() const {
return nullptr;
}
void CefBrowserPlatformDelegate::SetBrowserView(
CefRefPtr<CefBrowserView> browser_view) {
DCHECK(false);
}
web_modal::WebContentsModalDialogHost*
CefBrowserPlatformDelegate::GetWebContentsModalDialogHost() const {
DCHECK(false);
return nullptr;
}
void CefBrowserPlatformDelegate::PopupWebContentsCreated(
const CefBrowserSettings& settings,
CefRefPtr<CefClient> client,
content::WebContents* new_web_contents,
CefBrowserPlatformDelegate* new_platform_delegate,
bool is_devtools) {
// Default popup handling may not be Views-hosted.
if (!new_platform_delegate->IsViewsHosted()) {
return;
}
CefRefPtr<CefBrowserViewDelegate> new_delegate;
CefRefPtr<CefBrowserViewDelegate> opener_delegate;
cef_runtime_style_t opener_runtime_style = CEF_RUNTIME_STYLE_DEFAULT;
auto browser_view = GetBrowserView();
if (browser_view) {
// When |this| (the popup opener) is Views-hosted use the current delegate.
opener_delegate =
static_cast<CefBrowserViewImpl*>(browser_view.get())->delegate();
}
if (!opener_delegate) {
opener_delegate =
new_platform_delegate->GetDefaultBrowserViewDelegateForPopupOpener();
}
if (opener_delegate) {
new_delegate = opener_delegate->GetDelegateForPopupBrowserView(
browser_view, settings, client, is_devtools);
}
if (browser_view) {
opener_runtime_style = browser_view->GetRuntimeStyle();
} else if (opener_delegate) {
opener_runtime_style = opener_delegate->GetBrowserRuntimeStyle();
}
// Create a new BrowserView for the popup.
CefRefPtr<CefBrowserViewImpl> new_browser_view =
CefBrowserViewImpl::CreateForPopup(settings, new_delegate, is_devtools,
opener_runtime_style);
// Associate the PlatformDelegate with the new BrowserView.
new_platform_delegate->SetBrowserView(new_browser_view);
// Keep the BrowserView alive until PopupBrowserCreated() is called.
new_browser_view->AddRef();
}
void CefBrowserPlatformDelegate::PopupBrowserCreated(
CefBrowserPlatformDelegate* new_platform_delegate,
CefBrowserHostBase* new_browser,
bool is_devtools) {
// Default popup handling may not be Views-hosted.
if (!new_platform_delegate->IsViewsHosted()) {
return;
}
CefRefPtr<CefBrowserView> new_browser_view =
CefBrowserView::GetForBrowser(new_browser);
CHECK(new_browser_view);
bool popup_handled = false;
CefRefPtr<CefBrowserViewDelegate> opener_delegate;
auto browser_view = GetBrowserView();
if (browser_view) {
// When |this| (the popup opener) is Views-hosted use the current delegate.
opener_delegate =
static_cast<CefBrowserViewImpl*>(browser_view.get())->delegate();
}
if (!opener_delegate) {
opener_delegate =
new_platform_delegate->GetDefaultBrowserViewDelegateForPopupOpener();
}
if (opener_delegate) {
popup_handled = opener_delegate->OnPopupBrowserViewCreated(
browser_view, new_browser_view.get(), is_devtools);
}
if (!popup_handled) {
CefWindow::CreateTopLevelWindow(
new PopupWindowDelegate(new_browser_view.get()));
}
// Release the reference added in PopupWebContentsCreated().
new_browser_view->Release();
}
CefRefPtr<CefBrowserViewDelegate>
CefBrowserPlatformDelegate::GetDefaultBrowserViewDelegateForPopupOpener() {
return nullptr;
}
SkColor CefBrowserPlatformDelegate::GetBackgroundColor() const {
DCHECK(false);
return SkColor();
}
void CefBrowserPlatformDelegate::WasResized() {
DCHECK(false);
}
void CefBrowserPlatformDelegate::SendKeyEvent(const CefKeyEvent& event) {
NOTIMPLEMENTED();
}
void CefBrowserPlatformDelegate::SendMouseClickEvent(
const CefMouseEvent& event,
CefBrowserHost::MouseButtonType type,
bool mouseUp,
int clickCount) {
NOTIMPLEMENTED();
}
void CefBrowserPlatformDelegate::SendMouseMoveEvent(const CefMouseEvent& event,
bool mouseLeave) {
NOTIMPLEMENTED();
}
void CefBrowserPlatformDelegate::SendMouseWheelEvent(const CefMouseEvent& event,
int deltaX,
int deltaY) {
NOTIMPLEMENTED();
}
void CefBrowserPlatformDelegate::SendTouchEvent(const CefTouchEvent& event) {
NOTIMPLEMENTED();
}
void CefBrowserPlatformDelegate::SetFocus(bool setFocus) {}
void CefBrowserPlatformDelegate::SendCaptureLostEvent() {
NOTIMPLEMENTED();
}
#if BUILDFLAG(IS_WIN) || (BUILDFLAG(IS_POSIX) && !BUILDFLAG(IS_MAC))
void CefBrowserPlatformDelegate::NotifyMoveOrResizeStarted() {}
void CefBrowserPlatformDelegate::SizeTo(int width, int height) {}
#endif
gfx::Point CefBrowserPlatformDelegate::GetScreenPoint(
const gfx::Point& view,
bool want_dip_coords) const {
DCHECK(false);
return gfx::Point();
}
void CefBrowserPlatformDelegate::ViewText(const std::string& text) {
NOTIMPLEMENTED();
}
bool CefBrowserPlatformDelegate::HandleKeyboardEvent(
const input::NativeWebKeyboardEvent& event) {
DCHECK(false);
return false;
}
// static
void CefBrowserPlatformDelegate::HandleExternalProtocol(const GURL& url) {
CEF_POST_USER_VISIBLE_TASK(base::BindOnce(ExecuteExternalProtocol, url));
}
CefEventHandle CefBrowserPlatformDelegate::GetEventHandle(
const input::NativeWebKeyboardEvent& event) const {
DCHECK(false);
return kNullEventHandle;
}
std::unique_ptr<CefJavaScriptDialogRunner>
CefBrowserPlatformDelegate::CreateJavaScriptDialogRunner() {
return nullptr;
}
std::unique_ptr<CefMenuRunner> CefBrowserPlatformDelegate::CreateMenuRunner() {
NOTIMPLEMENTED();
return nullptr;
}
bool CefBrowserPlatformDelegate::IsWindowless() const {
return false;
}
bool CefBrowserPlatformDelegate::IsViewsHosted() const {
return false;
}
bool CefBrowserPlatformDelegate::HasExternalParent() const {
// In the majority of cases a Views-hosted browser will not have an external
// parent, and visa-versa.
return !IsViewsHosted();
}
void CefBrowserPlatformDelegate::WasHidden(bool hidden) {
DCHECK(false);
}
bool CefBrowserPlatformDelegate::IsHidden() const {
DCHECK(false);
return false;
}
void CefBrowserPlatformDelegate::NotifyScreenInfoChanged() {
DCHECK(false);
}
void CefBrowserPlatformDelegate::Invalidate(cef_paint_element_type_t type) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::SendExternalBeginFrame() {
DCHECK(false);
}
void CefBrowserPlatformDelegate::SetWindowlessFrameRate(int frame_rate) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::ImeSetComposition(
const CefString& text,
const std::vector<CefCompositionUnderline>& underlines,
const CefRange& replacement_range,
const CefRange& selection_range) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::ImeCommitText(
const CefString& text,
const CefRange& replacement_range,
int relative_cursor_pos) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::ImeFinishComposingText(bool keep_selection) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::ImeCancelComposition() {
DCHECK(false);
}
void CefBrowserPlatformDelegate::DragTargetDragEnter(
CefRefPtr<CefDragData> drag_data,
const CefMouseEvent& event,
cef_drag_operations_mask_t allowed_ops) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::DragTargetDragOver(
const CefMouseEvent& event,
cef_drag_operations_mask_t allowed_ops) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::DragTargetDragLeave() {
DCHECK(false);
}
void CefBrowserPlatformDelegate::DragTargetDrop(const CefMouseEvent& event) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::StartDragging(
const content::DropData& drop_data,
blink::DragOperationsMask allowed_ops,
const gfx::ImageSkia& image,
const gfx::Vector2d& image_offset,
const blink::mojom::DragEventSourceInfo& event_info,
content::RenderWidgetHostImpl* source_rwh) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::UpdateDragOperation(
ui::mojom::DragOperation operation,
bool document_is_handling_drag) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::DragSourceEndedAt(
int x,
int y,
cef_drag_operations_mask_t op) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::DragSourceSystemDragEnded() {
DCHECK(false);
}
void CefBrowserPlatformDelegate::AccessibilityEventReceived(
const ui::AXUpdatesAndEvents& details) {
DCHECK(false);
}
void CefBrowserPlatformDelegate::AccessibilityLocationChangesReceived(
const ui::AXTreeID& tree_id,
ui::AXLocationAndScrollUpdates& details) {
DCHECK(false);
}
gfx::Point CefBrowserPlatformDelegate::GetDialogPosition(
const gfx::Size& size) {
const gfx::Size& max_size = GetMaximumDialogSize();
return gfx::Point((max_size.width() - size.width()) / 2,
(max_size.height() - size.height()) / 2);
}
gfx::Size CefBrowserPlatformDelegate::GetMaximumDialogSize() {
if (!web_contents_) {
return gfx::Size();
}
// The dialog should try to fit within the overlay for the web contents.
// Note that, for things like print preview, this is just a suggested maximum.
return web_contents_->GetContainerBounds().size();
}
void CefBrowserPlatformDelegate::SetAutoResizeEnabled(bool enabled,
const CefSize& min_size,
const CefSize& max_size) {
NOTIMPLEMENTED();
}
void CefBrowserPlatformDelegate::SetAccessibilityState(
cef_state_t accessibility_state) {
// Do nothing if state is set to default. It'll be disabled by default and
// controlled by the command-line flags "force-renderer-accessibility" and
// "disable-renderer-accessibility".
if (accessibility_state == STATE_DEFAULT) {
return;
}
content::WebContentsImpl* web_contents_impl =
static_cast<content::WebContentsImpl*>(web_contents_);
if (!web_contents_impl) {
return;
}
ui::AXMode accMode;
// In windowless mode set accessibility to TreeOnly mode. Else native
// accessibility APIs, specific to each platform, are also created.
if (accessibility_state == STATE_ENABLED) {
accMode = IsWindowless() ? ui::kAXModeWebContentsOnly : ui::kAXModeComplete;
}
web_contents_impl->SetAccessibilityMode(accMode);
}
bool CefBrowserPlatformDelegate::IsPrintPreviewSupported() const {
if (IsWindowless()) {
// Not supported with windowless rendering.
return false;
}
if (web_contents_) {
auto cef_browser_context = CefBrowserContext::FromBrowserContext(
web_contents_->GetBrowserContext());
if (cef_browser_context->AsProfile()->GetPrefs()->GetBoolean(
prefs::kPrintPreviewDisabled)) {
// Disabled on the Profile.
return false;
}
}
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
if (command_line->HasSwitch(switches::kDisablePrintPreview)) {
// Disabled explicitly via the command-line.
return false;
}
const bool default_disabled = IsAlloyStyle();
if (default_disabled &&
!command_line->HasSwitch(switches::kEnablePrintPreview)) {
// Default disabled and not enabled explicitly via the command-line.
return false;
}
return true;
}
void CefBrowserPlatformDelegate::Find(const CefString& searchText,
bool forward,
bool matchCase,
bool findNext) {
NOTIMPLEMENTED();
}
void CefBrowserPlatformDelegate::StopFinding(bool clearSelection) {
NOTIMPLEMENTED();
}
// static
int CefBrowserPlatformDelegate::TranslateWebEventModifiers(
uint32_t cef_modifiers) {
int result = 0;
// Set modifiers based on key state.
if (cef_modifiers & EVENTFLAG_CAPS_LOCK_ON) {
result |= blink::WebInputEvent::kCapsLockOn;
}
if (cef_modifiers & EVENTFLAG_SHIFT_DOWN) {
result |= blink::WebInputEvent::kShiftKey;
}
if (cef_modifiers & EVENTFLAG_CONTROL_DOWN) {
result |= blink::WebInputEvent::kControlKey;
}
if (cef_modifiers & EVENTFLAG_ALT_DOWN) {
result |= blink::WebInputEvent::kAltKey;
}
if (cef_modifiers & EVENTFLAG_LEFT_MOUSE_BUTTON) {
result |= blink::WebInputEvent::kLeftButtonDown;
}
if (cef_modifiers & EVENTFLAG_MIDDLE_MOUSE_BUTTON) {
result |= blink::WebInputEvent::kMiddleButtonDown;
}
if (cef_modifiers & EVENTFLAG_RIGHT_MOUSE_BUTTON) {
result |= blink::WebInputEvent::kRightButtonDown;
}
if (cef_modifiers & EVENTFLAG_COMMAND_DOWN) {
result |= blink::WebInputEvent::kMetaKey;
}
if (cef_modifiers & EVENTFLAG_NUM_LOCK_ON) {
result |= blink::WebInputEvent::kNumLockOn;
}
if (cef_modifiers & EVENTFLAG_IS_KEY_PAD) {
result |= blink::WebInputEvent::kIsKeyPad;
}
if (cef_modifiers & EVENTFLAG_IS_LEFT) {
result |= blink::WebInputEvent::kIsLeft;
}
if (cef_modifiers & EVENTFLAG_IS_RIGHT) {
result |= blink::WebInputEvent::kIsRight;
}
if (cef_modifiers & EVENTFLAG_ALTGR_DOWN) {
result |= blink::WebInputEvent::kAltGrKey;
}
if (cef_modifiers & EVENTFLAG_IS_REPEAT) {
result |= blink::WebInputEvent::kIsAutoRepeat;
}
return result;
}