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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/test/extension_test_notification_observer.h"
#include <memory>
#include <set>
#include "base/containers/contains.h"
#include "base/functional/bind.h"
#include "base/memory/raw_ptr.h"
#include "base/run_loop.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/test/test_utils.h"
#include "extensions/browser/extension_util.h"
#include "extensions/common/extension.h"
#include "extensions/common/extension_id.h"
namespace extensions {
namespace {
bool HaveAllExtensionRenderFrameHostsFinishedLoading(ProcessManager* manager) {
for (content::RenderFrameHost* host : manager->GetAllFrames()) {
if (content::WebContents::FromRenderFrameHost(host)->IsLoading()) {
return false;
}
}
return true;
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
// NotificationSet::ForwardingWebContentsObserver
class ExtensionTestNotificationObserver::NotificationSet::
ForwardingWebContentsObserver : public content::WebContentsObserver {
public:
ForwardingWebContentsObserver(
content::WebContents* contents,
ExtensionTestNotificationObserver::NotificationSet* owner)
: WebContentsObserver(contents), owner_(owner) {}
private:
// content::WebContentsObserver
void DidStopLoading() override { owner_->DidStopLoading(web_contents()); }
void WebContentsDestroyed() override {
// Do not add code after this line, deletes `this`.
owner_->WebContentsDestroyed(web_contents());
}
raw_ptr<ExtensionTestNotificationObserver::NotificationSet> owner_;
};
////////////////////////////////////////////////////////////////////////////////
// ExtensionTestNotificationObserver::NotificationSet
ExtensionTestNotificationObserver::NotificationSet::NotificationSet(
ProcessManager* manager) {
process_manager_observation_.Observe(manager);
std::set<content::WebContents*> initial_extension_contents;
for (content::RenderFrameHost* rfh : manager->GetAllFrames()) {
initial_extension_contents.insert(
content::WebContents::FromRenderFrameHost(rfh));
}
for (content::WebContents* web_contents : initial_extension_contents) {
StartObservingWebContents(web_contents);
}
}
ExtensionTestNotificationObserver::NotificationSet::~NotificationSet() =
default;
void ExtensionTestNotificationObserver::NotificationSet::
OnExtensionFrameUnregistered(const ExtensionId& extension_id,
content::RenderFrameHost* render_frame_host) {
closure_list_.Notify();
}
void ExtensionTestNotificationObserver::NotificationSet::OnWebContentsCreated(
content::WebContents* web_contents) {
StartObservingWebContents(web_contents);
}
void ExtensionTestNotificationObserver::NotificationSet::
StartObservingWebContents(content::WebContents* web_contents) {
CHECK(!base::Contains(web_contents_observers_, web_contents));
web_contents_observers_[web_contents] =
std::make_unique<ForwardingWebContentsObserver>(web_contents, this);
}
void ExtensionTestNotificationObserver::NotificationSet::DidStopLoading(
content::WebContents* web_contents) {
closure_list_.Notify();
}
void ExtensionTestNotificationObserver::NotificationSet::WebContentsDestroyed(
content::WebContents* web_contents) {
web_contents_observers_.erase(web_contents);
closure_list_.Notify();
}
////////////////////////////////////////////////////////////////////////////////
// ExtensionTestNotificationObserver
ExtensionTestNotificationObserver::ExtensionTestNotificationObserver(
content::BrowserContext* context)
: context_(context) {}
ExtensionTestNotificationObserver::~ExtensionTestNotificationObserver() =
default;
bool ExtensionTestNotificationObserver::WaitForExtensionViewsToLoad() {
// Some views might not be created yet. This call may become insufficient if
// e.g. implementation of ExtensionHostQueue changes.
base::RunLoop().RunUntilIdle();
ProcessManager* manager = ProcessManager::Get(context_);
NotificationSet notification_set(manager);
WaitForCondition(
base::BindRepeating(&HaveAllExtensionRenderFrameHostsFinishedLoading,
manager),
¬ification_set);
return true;
}
bool ExtensionTestNotificationObserver::WaitForExtensionIdle(
const ExtensionId& extension_id) {
ProcessManager* manager = ProcessManager::Get(context_);
NotificationSet notification_set(manager);
WaitForCondition(
base::BindRepeating(&util::IsExtensionIdle, extension_id, context_),
¬ification_set);
return true;
}
bool ExtensionTestNotificationObserver::WaitForExtensionNotIdle(
const ExtensionId& extension_id) {
ProcessManager* manager = ProcessManager::Get(context_);
NotificationSet notification_set(manager);
WaitForCondition(base::BindRepeating(
[](const ExtensionId& extension_id,
content::BrowserContext* context) -> bool {
return !util::IsExtensionIdle(extension_id, context);
},
extension_id, context_),
¬ification_set);
return true;
}
void ExtensionTestNotificationObserver::WaitForCondition(
const ConditionCallback& condition,
NotificationSet* notification_set) {
if (condition.Run())
return;
condition_ = condition;
base::RunLoop run_loop;
quit_closure_ = run_loop.QuitClosure();
base::CallbackListSubscription subscription;
if (notification_set) {
subscription = notification_set->closure_list().Add(base::BindRepeating(
&ExtensionTestNotificationObserver::MaybeQuit, base::Unretained(this)));
}
run_loop.Run();
condition_.Reset();
quit_closure_.Reset();
}
void ExtensionTestNotificationObserver::MaybeQuit() {
// We can be called synchronously from any of the events being observed,
// so return immediately if the closure has already been run.
if (quit_closure_.is_null())
return;
if (condition_.Run())
std::move(quit_closure_).Run();
}
} // namespace extensions
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