cef/libcef/browser/javascript_dialog_manager.cc

346 lines
9.9 KiB
C++

// Copyright (c) 2012 The Chromium Embedded Framework Authors.
// Portions copyright (c) 2012 The Chromium 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/javascript_dialog_manager.h"
#include <utility>
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/logging.h"
#include "cef/libcef/browser/browser_host_base.h"
#include "cef/libcef/browser/extensions/browser_extensions_util.h"
#include "cef/libcef/browser/thread_util.h"
#include "components/javascript_dialogs/tab_modal_dialog_manager.h"
namespace {
class CefJSDialogCallbackImpl : public CefJSDialogCallback {
public:
using CallbackType = content::JavaScriptDialogManager::DialogClosedCallback;
explicit CefJSDialogCallbackImpl(CallbackType callback)
: callback_(std::move(callback)) {}
~CefJSDialogCallbackImpl() override {
if (!callback_.is_null()) {
// The callback is still pending. Cancel it now.
if (CEF_CURRENTLY_ON_UIT()) {
CancelNow(std::move(callback_));
} else {
CEF_POST_TASK(CEF_UIT,
base::BindOnce(&CefJSDialogCallbackImpl::CancelNow,
std::move(callback_)));
}
}
}
void Continue(bool success, const CefString& user_input) override {
if (CEF_CURRENTLY_ON_UIT()) {
if (!callback_.is_null()) {
std::move(callback_).Run(success, user_input);
}
} else {
CEF_POST_TASK(CEF_UIT, base::BindOnce(&CefJSDialogCallbackImpl::Continue,
this, success, user_input));
}
}
[[nodiscard]] CallbackType Disconnect() { return std::move(callback_); }
private:
static void CancelNow(CallbackType callback) {
CEF_REQUIRE_UIT();
std::move(callback).Run(false, std::u16string());
}
CallbackType callback_;
IMPLEMENT_REFCOUNTING(CefJSDialogCallbackImpl);
};
javascript_dialogs::TabModalDialogManager* GetTabModalDialogManager(
content::WebContents* web_contents) {
if (auto* manager =
javascript_dialogs::TabModalDialogManager::FromWebContents(
web_contents)) {
return manager;
}
// Try the owner WebContents if the dialog originates from an excluded view
// such as the PDF viewer or Print Preview. This is safe to call even if Alloy
// extensions are disabled.
if (auto* owner_contents =
extensions::GetOwnerForGuestContents(web_contents)) {
return javascript_dialogs::TabModalDialogManager::FromWebContents(
owner_contents);
}
return nullptr;
}
} // namespace
CefJavaScriptDialogManager::CefJavaScriptDialogManager(
CefBrowserHostBase* browser)
: browser_(browser), weak_ptr_factory_(this) {}
CefJavaScriptDialogManager::~CefJavaScriptDialogManager() = default;
void CefJavaScriptDialogManager::Destroy() {
if (handler_) {
CancelDialogs(nullptr, false);
}
if (runner_) {
runner_.reset();
}
}
void CefJavaScriptDialogManager::RunJavaScriptDialog(
content::WebContents* web_contents,
content::RenderFrameHost* render_frame_host,
content::JavaScriptDialogType message_type,
const std::u16string& message_text,
const std::u16string& default_prompt_text,
DialogClosedCallback callback,
bool* did_suppress_message) {
*did_suppress_message = false;
const GURL& origin_url = render_frame_host->GetLastCommittedURL();
// Always call DialogClosed().
callback =
base::BindOnce(&CefJavaScriptDialogManager::DialogClosed,
weak_ptr_factory_.GetWeakPtr(), std::move(callback));
if (auto client = browser_->GetClient()) {
if (auto handler = client->GetJSDialogHandler()) {
// If the dialog is handled this will be cleared in DialogClosed().
handler_ = handler;
CefRefPtr<CefJSDialogCallbackImpl> callbackPtr(
new CefJSDialogCallbackImpl(std::move(callback)));
// Execute the user callback.
bool handled = handler->OnJSDialog(
browser_, origin_url.spec(),
static_cast<cef_jsdialog_type_t>(message_type), message_text,
default_prompt_text, callbackPtr.get(), *did_suppress_message);
if (handled) {
// Invalid combination of values. Crash sooner rather than later.
CHECK(!*did_suppress_message);
return;
}
// |callback| may be null if the user executed it despite returning false.
callback = callbackPtr->Disconnect();
if (callback.is_null()) {
LOG(WARNING)
<< "OnJSDialog should return true when executing the callback";
return;
}
if (*did_suppress_message) {
// Call OnResetDialogState but don't execute |callback|.
CancelDialogs(web_contents, /*reset_state=*/true);
return;
}
handler_ = nullptr;
}
}
DCHECK(!handler_);
if (InitializeRunner()) {
runner_->Run(browser_, message_type, origin_url, message_text,
default_prompt_text, std::move(callback));
return;
}
if (!CanUseChromeDialogs()) {
// Dismiss the dialog.
std::move(callback).Run(false, std::u16string());
return;
}
auto manager = GetTabModalDialogManager(web_contents);
if (!manager) {
// Dismiss the dialog.
std::move(callback).Run(false, std::u16string());
return;
}
manager->RunJavaScriptDialog(web_contents, render_frame_host, message_type,
message_text, default_prompt_text,
std::move(callback), did_suppress_message);
}
void CefJavaScriptDialogManager::RunBeforeUnloadDialog(
content::WebContents* web_contents,
content::RenderFrameHost* render_frame_host,
bool is_reload,
DialogClosedCallback callback) {
if (browser_->WillBeDestroyed()) {
// Currently destroying the browser. Accept the unload without showing
// the prompt.
std::move(callback).Run(true, std::u16string());
return;
}
const std::u16string& message_text = u"Is it OK to leave/reload this page?";
// Always call DialogClosed().
callback =
base::BindOnce(&CefJavaScriptDialogManager::DialogClosed,
weak_ptr_factory_.GetWeakPtr(), std::move(callback));
if (auto client = browser_->GetClient()) {
if (auto handler = client->GetJSDialogHandler()) {
// If the dialog is handled this will be cleared in DialogClosed().
handler_ = handler;
CefRefPtr<CefJSDialogCallbackImpl> callbackPtr(
new CefJSDialogCallbackImpl(std::move(callback)));
// Execute the user callback.
bool handled = handler->OnBeforeUnloadDialog(
browser_, message_text, is_reload, callbackPtr.get());
if (handled) {
return;
}
// |callback| may be null if the user executed it despite returning false.
callback = callbackPtr->Disconnect();
if (callback.is_null()) {
LOG(WARNING) << "OnBeforeUnloadDialog should return true when "
"executing the callback";
return;
}
handler_ = nullptr;
}
}
DCHECK(!handler_);
if (InitializeRunner()) {
runner_->Run(browser_, content::JAVASCRIPT_DIALOG_TYPE_CONFIRM,
/*origin_url=*/GURL(), message_text,
/*default_prompt_text=*/std::u16string(), std::move(callback));
return;
}
if (!CanUseChromeDialogs()) {
// Accept the unload without showing the prompt.
std::move(callback).Run(true, std::u16string());
return;
}
auto manager = GetTabModalDialogManager(web_contents);
if (!manager) {
// Accept the unload without showing the prompt.
std::move(callback).Run(true, std::u16string());
return;
}
manager->RunBeforeUnloadDialog(web_contents, render_frame_host, is_reload,
std::move(callback));
}
bool CefJavaScriptDialogManager::HandleJavaScriptDialog(
content::WebContents* web_contents,
bool accept,
const std::u16string* prompt_override) {
if (handler_) {
DialogClosed(base::NullCallback(), accept,
prompt_override ? *prompt_override : std::u16string());
return true;
}
if (runner_) {
runner_->Handle(accept, prompt_override);
return true;
}
if (!CanUseChromeDialogs()) {
return true;
}
auto manager = GetTabModalDialogManager(web_contents);
if (!manager) {
return true;
}
return manager->HandleJavaScriptDialog(web_contents, accept, prompt_override);
}
void CefJavaScriptDialogManager::CancelDialogs(
content::WebContents* web_contents,
bool reset_state) {
if (handler_) {
if (reset_state) {
handler_->OnResetDialogState(browser_);
}
handler_ = nullptr;
return;
}
if (runner_) {
runner_->Cancel();
return;
}
// Null when called from DialogClosed() or Destroy().
if (!web_contents) {
return;
}
if (!CanUseChromeDialogs()) {
return;
}
auto manager = GetTabModalDialogManager(web_contents);
if (!manager) {
return;
}
manager->CancelDialogs(web_contents, reset_state);
}
void CefJavaScriptDialogManager::DialogClosed(
DialogClosedCallback callback,
bool success,
const std::u16string& user_input) {
if (handler_) {
handler_->OnDialogClosed(browser_);
// Call OnResetDialogState.
CancelDialogs(/*web_contents=*/nullptr, /*reset_state=*/true);
}
// Null when called from HandleJavaScriptDialog().
if (!callback.is_null()) {
std::move(callback).Run(success, user_input);
}
}
bool CefJavaScriptDialogManager::InitializeRunner() {
if (!runner_initialized_) {
runner_ = browser_->platform_delegate()->CreateJavaScriptDialogRunner();
runner_initialized_ = true;
}
return !!runner_.get();
}
bool CefJavaScriptDialogManager::CanUseChromeDialogs() const {
if (browser_->IsWindowless() &&
browser_->GetWindowHandle() == kNullWindowHandle) {
LOG(ERROR) << "Default dialog implementation requires a parent window "
"handle; canceling the JS dialog";
return false;
}
return true;
}