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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/glic/host/guest_util.h"
#include "base/command_line.h"
#include "base/metrics/histogram_functions.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/glic/public/glic_keyed_service.h"
#include "chrome/browser/glic/public/glic_keyed_service_factory.h"
#include "chrome/common/chrome_features.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/webui_url_constants.h"
#include "components/guest_view/browser/guest_view_base.h"
#include "components/language/core/common/language_util.h"
#include "content/public/browser/navigation_handle.h"
#include "extensions/browser/guest_view/web_view/web_view_guest.h"
#include "mojo/public/cpp/bindings/associated_remote.h"
#include "net/base/url_util.h"
#include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h"
#include "third_party/blink/public/mojom/autoplay/autoplay.mojom.h"
#include "third_party/skia/include/core/SkColor.h"
#include "url/gurl.h"
namespace glic {
namespace {
// LINT.IfChange(WebViewAutoPlayProgress)
enum class WebViewAutoPlayProgress {
kWebContentsObserverRegistered = 0,
kAutoPlayGrantedForPrimaryRFH = 1,
kAutoPlayGrantedForOtherRFH = 2,
kMaxValue = kAutoPlayGrantedForOtherRFH,
};
// LINT.ThenChange(//tools/metrics/histograms/metadata/glic/enums.xml:WebViewAutoPlayProgress)
// Observes the glic webview's `WebContents`.
class WebviewWebContentsObserver : public content::WebContentsObserver,
public base::SupportsUserData::Data {
public:
explicit WebviewWebContentsObserver(content::WebContents* web_contents)
: content::WebContentsObserver(web_contents) {}
void ReadyToCommitNavigation(content::NavigationHandle* handle) override {
// Enable autoplay for the webview.
content::RenderFrameHost* frame = handle->GetRenderFrameHost();
mojo::AssociatedRemote<blink::mojom::AutoplayConfigurationClient> client;
frame->GetRemoteAssociatedInterfaces()->GetInterface(&client);
client->AddAutoplayFlags(GetGuestOrigin(),
blink::mojom::kAutoplayFlagForceAllow);
VLOG(1) << "Granted Glic AutoPlay for origin=\"" << GetGuestOrigin()
<< "\" at " << (handle->IsInPrimaryMainFrame() ? "main " : "")
<< "RFH with url=\"" << handle->GetURL() << "\"";
base::UmaHistogramEnumeration(
"Glic.Host.WebView.AutoPlay",
handle->IsInPrimaryMainFrame()
? WebViewAutoPlayProgress::kAutoPlayGrantedForPrimaryRFH
: WebViewAutoPlayProgress::kAutoPlayGrantedForOtherRFH);
}
};
} // namespace
GURL GetGuestURL() {
auto* command_line = base::CommandLine::ForCurrentProcess();
bool has_glic_guest_url = command_line->HasSwitch(::switches::kGlicGuestURL);
GURL url =
GURL(has_glic_guest_url
? command_line->GetSwitchValueASCII(::switches::kGlicGuestURL)
: features::kGlicGuestURL.Get());
if (url.is_empty()) {
LOG(ERROR) << "No glic guest url";
return GURL();
}
return GetLocalizedGuestURL(url);
}
url::Origin GetGuestOrigin() {
return url::Origin::Create(GetGuestURL());
}
GURL GetLocalizedGuestURL(const GURL& guest_url) {
std::string unused_output;
if (net::GetValueForKeyInQuery(guest_url, "hl", &unused_output)) {
return guest_url;
}
std::string locale = g_browser_process->GetApplicationLocale();
language::ToTranslateLanguageSynonym(&locale);
return net::AppendQueryParameter(guest_url, "hl", locale);
}
bool IsGlicWebUI(const content::WebContents* web_contents) {
return web_contents &&
web_contents->GetLastCommittedURL() == chrome::kChromeUIGlicURL;
}
bool OnGuestAdded(content::WebContents* guest_contents) {
// Only handle the glic webview. Explicitly check the guest type here in case
// glic's web content happens to load a mime handler.
if (!extensions::WebViewGuest::FromWebContents(guest_contents)) {
return false;
}
content::WebContents* top =
guest_view::GuestViewBase::GetTopLevelWebContents(guest_contents);
CHECK(top);
if (!IsGlicWebUI(top)) {
return false;
}
GlicKeyedService* service =
GlicKeyedServiceFactory::GetGlicKeyedService(top->GetBrowserContext());
if (!service) {
return false;
}
service->GuestAdded(guest_contents);
guest_contents->SetUserData(
"glic::WebviewWebContentsObserver",
std::make_unique<WebviewWebContentsObserver>(guest_contents));
VLOG(1) << "Registered glic::WebviewWebContentsObserver for guest "
"WebContents with url=\""
<< guest_contents->GetVisibleURL() << "\"";
base::UmaHistogramEnumeration(
"Glic.Host.WebView.AutoPlay",
WebViewAutoPlayProgress::kWebContentsObserverRegistered);
return true;
}
} // namespace glic
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