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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/run_loop.h"
#include "base/strings/stringprintf.h"
#include "base/test/scoped_feature_list.h"
#include "base/threading/thread_restrictions.h"
#include "build/build_config.h"
#include "components/ukm/test_ukm_recorder.h"
#include "content/browser/display_cutout/display_cutout_constants.h"
#include "content/browser/renderer_host/frame_tree_node.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents_delegate.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/common/content_switches.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/content_browser_test.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/public/test/test_frame_navigation_observer.h"
#include "content/public/test/test_navigation_observer.h"
#include "content/public/test/test_utils.h"
#include "content/shell/browser/shell.h"
#include "content/test/content_browser_test_utils_internal.h"
#include "mojo/public/cpp/bindings/associated_remote.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h"
#include "third_party/blink/public/mojom/frame/fullscreen.mojom.h"
#include "third_party/blink/public/mojom/page/display_cutout.mojom.h"
namespace content {
namespace {
#if BUILDFLAG(IS_ANDROID)
// These inset and flags simulate when we are not extending into the cutout.
const auto kNoCutoutInsets = gfx::Insets();
// These inset and flags simulate when the we are extending into the cutout.
const auto kCutoutInsets = gfx::Insets::TLBR(1, 0, 1, 0);
// These inset and flags simulate when we are extending into the cutout and have
// rotated the device so that the cutout is on the other sides.
const auto kRotatedCutoutInsets = gfx::Insets::TLBR(0, 1, 0, 1);
#endif
class TestWebContentsObserver : public WebContentsObserver {
public:
explicit TestWebContentsObserver(content::WebContents* web_contents)
: WebContentsObserver(web_contents) {}
TestWebContentsObserver(const TestWebContentsObserver&) = delete;
TestWebContentsObserver& operator=(const TestWebContentsObserver&) = delete;
// WebContentsObserver override.
void ViewportFitChanged(blink::mojom::ViewportFit value) override {
value_ = value;
if (value_ == wanted_value_)
run_loop_.Quit();
}
bool has_value() const { return value_.has_value(); }
void WaitForWantedValue(blink::mojom::ViewportFit wanted_value) {
if (value_.has_value()) {
EXPECT_EQ(wanted_value, value_);
return;
}
wanted_value_ = wanted_value;
run_loop_.Run();
}
private:
base::RunLoop run_loop_;
std::optional<blink::mojom::ViewportFit> value_;
blink::mojom::ViewportFit wanted_value_ = blink::mojom::ViewportFit::kAuto;
};
// Used for forcing a specific |blink::mojom::DisplayMode| during a test.
class DisplayCutoutWebContentsDelegate : public WebContentsDelegate {
public:
blink::mojom::DisplayMode GetDisplayMode(
const WebContents* web_contents) override {
return display_mode_;
}
void SetDisplayMode(blink::mojom::DisplayMode display_mode) {
display_mode_ = display_mode;
}
private:
blink::mojom::DisplayMode display_mode_ = blink::mojom::DisplayMode::kBrowser;
};
const char kTestHTML[] =
"<!DOCTYPE html>"
"<style>"
" #target {"
" margin-top: env(safe-area-inset-top);"
" margin-left: env(safe-area-inset-left);"
" margin-bottom: env(safe-area-inset-bottom);"
" margin-right: env(safe-area-inset-right);"
" }"
"</style>"
"<div id=target></div>";
} // namespace
class DisplayCutoutBrowserTest : public ContentBrowserTest {
public:
DisplayCutoutBrowserTest() = default;
DisplayCutoutBrowserTest(const DisplayCutoutBrowserTest&) = delete;
DisplayCutoutBrowserTest& operator=(const DisplayCutoutBrowserTest&) = delete;
void SetUpCommandLine(base::CommandLine* command_line) override {
command_line->AppendSwitchASCII(switches::kEnableBlinkFeatures,
"DisplayCutoutAPI");
}
void SetUp() override {
// TODO(https://crbug.com/330381317): Add browser test coverage for
// when edge-to-edge is enabled.
base::test::ScopedFeatureList feature_list;
feature_list.InitWithFeatures(
/*enabled_features=*/{},
/*disabled_features=*/{features::kDrawCutoutEdgeToEdge});
ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
embedded_test_server()->ServeFilesFromDirectory(temp_dir_.GetPath());
ASSERT_TRUE(embedded_test_server()->Start());
ContentBrowserTest::SetUp();
}
void LoadTestPageWithViewportFitFromMeta(const std::string& value) {
LoadTestPageWithData(
"<!DOCTYPE html>"
"<meta name='viewport' content='viewport-fit=" +
value + "'><iframe></iframe>");
}
void LoadSubFrameWithViewportFitMetaValue(const std::string& value) {
const std::string data =
"data:text/html;charset=utf-8,<!DOCTYPE html>"
"<meta name='viewport' content='viewport-fit=" +
value + "'>";
FrameTreeNode* root = web_contents_impl()->GetPrimaryFrameTree().root();
FrameTreeNode* child = root->child_at(0);
ASSERT_TRUE(NavigateToURLFromRenderer(child, GURL(data)));
web_contents_impl()->Focus();
}
void ClearViewportFitTag() {
ASSERT_TRUE(
ExecJs(web_contents_impl(),
"document.getElementsByTagName('meta')[0].content = ''"));
}
void SendSafeAreaToFrame(int top, int left, int bottom, int right) {
mojo::AssociatedRemote<blink::mojom::DisplayCutoutClient> client;
MainFrame()->GetRemoteAssociatedInterfaces()->GetInterface(
client.BindNewEndpointAndPassReceiver());
client->SetSafeArea(gfx::Insets::TLBR(top, left, bottom, right));
}
std::string GetCurrentSafeAreaValue(const std::string& name) {
return EvalJs(MainFrame(),
"const e = document.getElementById('target');"
"const style = window.getComputedStyle(e, null);"
"style.getPropertyValue('margin-" +
name + "');")
.ExtractString();
}
void LoadTestPageWithData(const std::string& data) {
// Write |data| to a temporary file that can be later reached at
// http://127.0.0.1/test_file_*.html.
static int s_test_file_number = 1;
base::FilePath file_path = temp_dir_.GetPath().AppendASCII(
base::StringPrintf("test_file_%d.html", s_test_file_number++));
{
base::ScopedAllowBlockingForTesting allow_temp_file_writing;
ASSERT_TRUE(base::WriteFile(file_path, data));
}
GURL url = embedded_test_server()->GetURL(
"/" + file_path.BaseName().AsUTF8Unsafe());
// Navigate to the html file created above.
ASSERT_TRUE(NavigateToURL(shell(), url));
}
void SimulateFullscreenStateChanged(RenderFrameHostImpl* frame,
bool is_fullscreen) {
web_contents_impl()->FullscreenStateChanged(
frame, is_fullscreen, blink::mojom::FullscreenOptions::New());
}
void SimulateFullscreenExit() {
web_contents_impl()->ExitFullscreenMode(true);
}
RenderFrameHostImpl* MainFrame() {
return web_contents_impl()->GetPrimaryMainFrame();
}
RenderFrameHostImpl* ChildFrame() {
FrameTreeNode* root = web_contents_impl()->GetPrimaryFrameTree().root();
return root->child_at(0)->current_frame_host();
}
WebContentsImpl* web_contents_impl() {
return static_cast<WebContentsImpl*>(shell()->web_contents());
}
protected:
base::ScopedTempDir temp_dir_;
};
// The viewport meta tag is only enabled on Android.
#if BUILDFLAG(IS_ANDROID)
IN_PROC_BROWSER_TEST_F(DisplayCutoutBrowserTest, ViewportFit_Fullscreen) {
LoadTestPageWithViewportFitFromMeta("cover");
LoadSubFrameWithViewportFitMetaValue("contain");
{
TestWebContentsObserver observer(web_contents_impl());
SimulateFullscreenStateChanged(MainFrame(), true);
observer.WaitForWantedValue(blink::mojom::ViewportFit::kCover);
web_contents_impl()->SetDisplayCutoutSafeArea(kCutoutInsets);
}
{
TestWebContentsObserver observer(web_contents_impl());
SimulateFullscreenStateChanged(ChildFrame(), true);
observer.WaitForWantedValue(blink::mojom::ViewportFit::kContain);
web_contents_impl()->SetDisplayCutoutSafeArea(kNoCutoutInsets);
}
{
TestWebContentsObserver observer(web_contents_impl());
SimulateFullscreenStateChanged(ChildFrame(), false);
observer.WaitForWantedValue(blink::mojom::ViewportFit::kCover);
// This simulates the user rotating the device.
web_contents_impl()->SetDisplayCutoutSafeArea(kCutoutInsets);
web_contents_impl()->SetDisplayCutoutSafeArea(kRotatedCutoutInsets);
}
{
TestWebContentsObserver observer(web_contents_impl());
SimulateFullscreenStateChanged(MainFrame(), false);
SimulateFullscreenExit();
observer.WaitForWantedValue(blink::mojom::ViewportFit::kAuto);
web_contents_impl()->SetDisplayCutoutSafeArea(kNoCutoutInsets);
}
shell()->Close();
}
IN_PROC_BROWSER_TEST_F(DisplayCutoutBrowserTest,
ViewportFit_Fullscreen_Update) {
LoadTestPageWithViewportFitFromMeta("cover");
{
TestWebContentsObserver observer(web_contents_impl());
SimulateFullscreenStateChanged(MainFrame(), true);
observer.WaitForWantedValue(blink::mojom::ViewportFit::kCover);
web_contents_impl()->SetDisplayCutoutSafeArea(kNoCutoutInsets);
}
{
TestWebContentsObserver observer(web_contents_impl());
ClearViewportFitTag();
observer.WaitForWantedValue(blink::mojom::ViewportFit::kAuto);
web_contents_impl()->SetDisplayCutoutSafeArea(kNoCutoutInsets);
}
shell()->Close();
}
IN_PROC_BROWSER_TEST_F(DisplayCutoutBrowserTest, ViewportFit_Noop_Navigate) {
{
TestWebContentsObserver observer(web_contents_impl());
LoadTestPageWithViewportFitFromMeta("cover");
EXPECT_FALSE(observer.has_value());
}
LoadTestPageWithData("");
}
IN_PROC_BROWSER_TEST_F(DisplayCutoutBrowserTest,
ViewportFit_Noop_WebContentsDestroyed) {
{
TestWebContentsObserver observer(web_contents_impl());
LoadTestPageWithViewportFitFromMeta("cover");
EXPECT_FALSE(observer.has_value());
}
shell()->Close();
}
IN_PROC_BROWSER_TEST_F(DisplayCutoutBrowserTest, WebDisplayMode) {
// Inject the custom delegate used for this test.
std::unique_ptr<DisplayCutoutWebContentsDelegate> delegate(
new DisplayCutoutWebContentsDelegate());
web_contents_impl()->SetDelegate(delegate.get());
EXPECT_EQ(delegate.get(), web_contents_impl()->GetDelegate());
{
TestWebContentsObserver observer(web_contents_impl());
LoadTestPageWithViewportFitFromMeta("cover");
EXPECT_FALSE(observer.has_value());
}
}
IN_PROC_BROWSER_TEST_F(DisplayCutoutBrowserTest, WebDisplayMode_Fullscreen) {
// Inject the custom delegate used for this test.
std::unique_ptr<DisplayCutoutWebContentsDelegate> delegate(
new DisplayCutoutWebContentsDelegate());
delegate->SetDisplayMode(blink::mojom::DisplayMode::kFullscreen);
web_contents_impl()->SetDelegate(delegate.get());
EXPECT_EQ(delegate.get(), web_contents_impl()->GetDelegate());
{
TestWebContentsObserver observer(web_contents_impl());
LoadTestPageWithViewportFitFromMeta("cover");
observer.WaitForWantedValue(blink::mojom::ViewportFit::kCover);
}
}
IN_PROC_BROWSER_TEST_F(DisplayCutoutBrowserTest, WebDisplayMode_Standalone) {
// Inject the custom delegate used for this test.
std::unique_ptr<DisplayCutoutWebContentsDelegate> delegate(
new DisplayCutoutWebContentsDelegate());
delegate->SetDisplayMode(blink::mojom::DisplayMode::kStandalone);
web_contents_impl()->SetDelegate(delegate.get());
EXPECT_EQ(delegate.get(), web_contents_impl()->GetDelegate());
{
TestWebContentsObserver observer(web_contents_impl());
LoadTestPageWithViewportFitFromMeta("cover");
EXPECT_FALSE(observer.has_value());
}
}
#endif
IN_PROC_BROWSER_TEST_F(DisplayCutoutBrowserTest, PublishSafeAreaVariables) {
LoadTestPageWithData(kTestHTML);
// Make sure all the safe areas are currently zero.
EXPECT_EQ("0px", GetCurrentSafeAreaValue("top"));
EXPECT_EQ("0px", GetCurrentSafeAreaValue("left"));
EXPECT_EQ("0px", GetCurrentSafeAreaValue("bottom"));
EXPECT_EQ("0px", GetCurrentSafeAreaValue("right"));
SendSafeAreaToFrame(1, 2, 3, 4);
// Make sure all the safe ares are correctly set.
EXPECT_EQ("1px", GetCurrentSafeAreaValue("top"));
EXPECT_EQ("2px", GetCurrentSafeAreaValue("left"));
EXPECT_EQ("3px", GetCurrentSafeAreaValue("bottom"));
EXPECT_EQ("4px", GetCurrentSafeAreaValue("right"));
}
#if BUILDFLAG(IS_ANDROID)
class DisplayCutoutBrowserWithEdgeToEdgeTest : public DisplayCutoutBrowserTest {
public:
DisplayCutoutBrowserWithEdgeToEdgeTest() = default;
DisplayCutoutBrowserWithEdgeToEdgeTest(
const DisplayCutoutBrowserWithEdgeToEdgeTest&) = delete;
DisplayCutoutBrowserWithEdgeToEdgeTest& operator=(
const DisplayCutoutBrowserWithEdgeToEdgeTest&) = delete;
void SetUp() override {
base::test::ScopedFeatureList feature_list;
feature_list.InitWithFeatures(
/*enabled_features=*/{features::kDrawCutoutEdgeToEdge},
/*disabled_features=*/{});
ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
embedded_test_server()->ServeFilesFromDirectory(temp_dir_.GetPath());
ASSERT_TRUE(embedded_test_server()->Start());
ContentBrowserTest::SetUp();
}
};
// Sometimes, the fullscreen exit logic is triggered before navigation
// completes, causing a check to the RenderFrameHost before it's been set. This
// ensures that flow doesn't cause a crash.
IN_PROC_BROWSER_TEST_F(DisplayCutoutBrowserWithEdgeToEdgeTest,
FullscreenExitBeforeNavigationCompletes) {
TestWebContentsObserver observer(web_contents_impl());
SimulateFullscreenExit();
}
#endif
} // namespace content
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