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pdf_accessibility_tree_browsertest.cc
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pdf_accessibility_tree_browsertest.cc
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// Copyright 2017 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 "base/path_service.h"
#include "base/test/scoped_feature_list.h"
#include "build/build_config.h"
#include "components/pdf/renderer/pdf_accessibility_tree.h"
#include "components/strings/grit/components_strings.h"
#include "content/public/common/content_switches.h"
#include "content/public/renderer/render_accessibility.h"
#include "content/public/renderer/render_frame.h"
#include "content/public/renderer/render_view.h"
#include "content/public/renderer/renderer_ppapi_host.h"
#include "content/public/test/fake_pepper_plugin_instance.h"
#include "content/public/test/render_view_test.h"
#include "pdf/pdf_features.h"
#include "third_party/blink/public/strings/grit/blink_strings.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_settings.h"
#include "third_party/blink/public/web/web_view.h"
#include "ui/accessibility/ax_enums.mojom.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
namespace pdf {
namespace {
const PP_PrivateAccessibilityTextRunInfo kFirstTextRun = {
15, PP_MakeFloatRectFromXYWH(26.0f, 189.0f, 84.0f, 13.0f)};
const PP_PrivateAccessibilityTextRunInfo kSecondTextRun = {
15, PP_MakeFloatRectFromXYWH(28.0f, 117.0f, 152.0f, 19.0f)};
const PP_PrivateAccessibilityCharInfo kDummyCharsData[] = {
{'H', 12}, {'e', 6}, {'l', 5}, {'l', 4}, {'o', 8}, {',', 4},
{' ', 4}, {'w', 12}, {'o', 6}, {'r', 6}, {'l', 4}, {'d', 9},
{'!', 4}, {' ', 0}, {' ', 0}, {'G', 16}, {'o', 12}, {'o', 12},
{'d', 12}, {'b', 10}, {'y', 12}, {'e', 12}, {',', 4}, {' ', 6},
{'w', 16}, {'o', 12}, {'r', 8}, {'l', 4}, {'d', 12}, {'!', 2},
};
const PP_PrivateAccessibilityTextRunInfo kFirstRunMultiLine = {
7, PP_MakeFloatRectFromXYWH(26.0f, 189.0f, 84.0f, 13.0f)};
const PP_PrivateAccessibilityTextRunInfo kSecondRunMultiLine = {
8, PP_MakeFloatRectFromXYWH(26.0f, 189.0f, 84.0f, 13.0f)};
const PP_PrivateAccessibilityTextRunInfo kThirdRunMultiLine = {
9, PP_MakeFloatRectFromXYWH(26.0f, 189.0f, 84.0f, 13.0f)};
const PP_PrivateAccessibilityTextRunInfo kFourthRunMultiLine = {
6, PP_MakeFloatRectFromXYWH(26.0f, 189.0f, 84.0f, 13.0f)};
const char kChromiumTestUrl[] = "www.cs.chromium.org";
void CompareRect(const PP_Rect& expected_rect, const PP_Rect& actual_rect) {
EXPECT_EQ(expected_rect.point.x, actual_rect.point.x);
EXPECT_EQ(expected_rect.point.y, actual_rect.point.y);
EXPECT_EQ(expected_rect.size.height, actual_rect.size.height);
EXPECT_EQ(expected_rect.size.width, actual_rect.size.width);
}
void CompareRect(const gfx::RectF& expected_rect,
const gfx::RectF& actual_rect) {
EXPECT_FLOAT_EQ(expected_rect.x(), actual_rect.x());
EXPECT_FLOAT_EQ(expected_rect.y(), actual_rect.y());
EXPECT_FLOAT_EQ(expected_rect.size().height(), actual_rect.size().height());
EXPECT_FLOAT_EQ(expected_rect.size().width(), actual_rect.size().width());
}
constexpr uint32_t MakeARGB(unsigned int a,
unsigned int r,
unsigned int g,
unsigned int b) {
return (a << 24) | (r << 16) | (g << 8) | b;
}
// This class overrides content::FakePepperPluginInstance to record received
// action data when tests make an accessibility action call.
class ActionHandlingFakePepperPluginInstance
: public content::FakePepperPluginInstance {
public:
ActionHandlingFakePepperPluginInstance() = default;
~ActionHandlingFakePepperPluginInstance() override = default;
// content::FakePepperPluginInstance:
void HandleAccessibilityAction(
const PP_PdfAccessibilityActionData& action_data) override {
received_action_data_ = action_data;
}
PP_PdfAccessibilityActionData GetReceivedActionData() {
return received_action_data_;
}
private:
PP_PdfAccessibilityActionData received_action_data_;
};
class FakeRendererPpapiHost : public content::RendererPpapiHost {
public:
explicit FakeRendererPpapiHost(content::RenderFrame* render_frame)
: FakeRendererPpapiHost(render_frame, nullptr) {}
FakeRendererPpapiHost(
content::RenderFrame* render_frame,
ActionHandlingFakePepperPluginInstance* fake_pepper_plugin_instance)
: render_frame_(render_frame),
fake_pepper_plugin_instance_(fake_pepper_plugin_instance) {}
~FakeRendererPpapiHost() override = default;
ppapi::host::PpapiHost* GetPpapiHost() override { return nullptr; }
bool IsValidInstance(PP_Instance instance) override { return true; }
content::PepperPluginInstance* GetPluginInstance(
PP_Instance instance) override {
return fake_pepper_plugin_instance_;
}
content::RenderFrame* GetRenderFrameForInstance(
PP_Instance instance) override {
return render_frame_;
}
content::RenderView* GetRenderViewForInstance(PP_Instance instance) override {
return nullptr;
}
blink::WebPluginContainer* GetContainerForInstance(
PP_Instance instance) override {
return nullptr;
}
bool HasUserGesture(PP_Instance instance) override { return false; }
int GetRoutingIDForWidget(PP_Instance instance) override { return 0; }
gfx::Point PluginPointToRenderFrame(PP_Instance instance,
const gfx::Point& pt) override {
return gfx::Point();
}
IPC::PlatformFileForTransit ShareHandleWithRemote(
base::PlatformFile handle,
bool should_close_source) override {
return IPC::PlatformFileForTransit();
}
base::UnsafeSharedMemoryRegion ShareUnsafeSharedMemoryRegionWithRemote(
const base::UnsafeSharedMemoryRegion& region) override {
return base::UnsafeSharedMemoryRegion();
}
base::ReadOnlySharedMemoryRegion ShareReadOnlySharedMemoryRegionWithRemote(
const base::ReadOnlySharedMemoryRegion& region) override {
return base::ReadOnlySharedMemoryRegion();
}
bool IsRunningInProcess() override { return false; }
std::string GetPluginName() override { return std::string(); }
void SetToExternalPluginHost() override {}
void CreateBrowserResourceHosts(
PP_Instance instance,
const std::vector<IPC::Message>& nested_msgs,
base::OnceCallback<void(const std::vector<int>&)> callback) override {}
GURL GetDocumentURL(PP_Instance instance) override { return GURL(); }
private:
content::RenderFrame* render_frame_;
ActionHandlingFakePepperPluginInstance* fake_pepper_plugin_instance_;
};
} // namespace
class PdfAccessibilityTreeTest : public content::RenderViewTest {
public:
PdfAccessibilityTreeTest() {}
~PdfAccessibilityTreeTest() override = default;
void SetUp() override {
content::RenderViewTest::SetUp();
base::FilePath pak_dir;
base::PathService::Get(base::DIR_MODULE, &pak_dir);
base::FilePath pak_file =
pak_dir.Append(FILE_PATH_LITERAL("components_tests_resources.pak"));
ui::ResourceBundle::GetSharedInstance().AddDataPackFromPath(
pak_file, ui::SCALE_FACTOR_NONE);
viewport_info_.zoom = 1.0;
viewport_info_.scale = 1.0;
viewport_info_.scroll = {0, 0};
viewport_info_.offset = {0, 0};
viewport_info_.selection_start_page_index = 0;
viewport_info_.selection_start_char_index = 0;
viewport_info_.selection_end_page_index = 0;
viewport_info_.selection_end_char_index = 0;
doc_info_.page_count = 1;
page_info_.page_index = 0;
page_info_.text_run_count = 0;
page_info_.char_count = 0;
page_info_.bounds = PP_MakeRectFromXYWH(0, 0, 1, 1);
}
protected:
PP_PrivateAccessibilityViewportInfo viewport_info_;
PP_PrivateAccessibilityDocInfo doc_info_;
PP_PrivateAccessibilityPageInfo page_info_;
std::vector<ppapi::PdfAccessibilityTextRunInfo> text_runs_;
std::vector<PP_PrivateAccessibilityCharInfo> chars_;
ppapi::PdfAccessibilityPageObjects page_objects_;
};
TEST_F(PdfAccessibilityTreeTest, TestEmptyPDFPage) {
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
FakeRendererPpapiHost host(view_->GetMainRenderFrame());
PP_Instance instance = 0;
PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
EXPECT_EQ(ax::mojom::Role::kDocument,
pdf_accessibility_tree.GetRoot()->data().role);
}
TEST_F(PdfAccessibilityTreeTest, TestAccessibilityDisabledDuringPDFLoad) {
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
FakeRendererPpapiHost host(view_->GetMainRenderFrame());
PP_Instance instance = 0;
PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
// Disable accessibility while the PDF is loading, make sure this
// doesn't crash.
render_frame->SetAccessibilityModeForTest(ui::AXMode());
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
}
TEST_F(PdfAccessibilityTreeTest, TestPdfAccessibilityTreeCreation) {
static const char kTestAltText[] = "Alternate text for image";
text_runs_.emplace_back(kFirstTextRun);
text_runs_.emplace_back(kSecondTextRun);
chars_.insert(chars_.end(), std::begin(kDummyCharsData),
std::end(kDummyCharsData));
{
ppapi::PdfAccessibilityLinkInfo link;
link.bounds = PP_MakeFloatRectFromXYWH(1.0f, 1.0f, 5.0f, 6.0f);
link.url = kChromiumTestUrl;
link.text_run_index = 0;
link.text_run_count = 1;
page_objects_.links.push_back(std::move(link));
}
{
ppapi::PdfAccessibilityImageInfo image;
image.bounds = PP_MakeFloatRectFromXYWH(8.0f, 9.0f, 2.0f, 1.0f);
image.alt_text = kTestAltText;
image.text_run_index = 2;
page_objects_.images.push_back(std::move(image));
}
{
ppapi::PdfAccessibilityImageInfo image;
image.bounds = PP_MakeFloatRectFromXYWH(11.0f, 14.0f, 5.0f, 8.0f);
image.text_run_index = 2;
page_objects_.images.push_back(std::move(image));
}
page_info_.text_run_count = text_runs_.size();
page_info_.char_count = chars_.size();
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
FakeRendererPpapiHost host(view_->GetMainRenderFrame());
PP_Instance instance = 0;
pdf::PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
/*
* Expected tree structure
* Document
* ++ Region
* ++++ Paragraph
* ++++++ Link
* ++++ Paragraph
* ++++++ Static Text
* ++++++ Image
* ++++++ Image
*/
ui::AXNode* root_node = pdf_accessibility_tree.GetRoot();
ASSERT_TRUE(root_node);
EXPECT_EQ(ax::mojom::Role::kDocument, root_node->data().role);
ASSERT_EQ(1u, root_node->children().size());
ui::AXNode* page_node = root_node->children()[0];
ASSERT_TRUE(page_node);
EXPECT_EQ(ax::mojom::Role::kRegion, page_node->data().role);
ASSERT_EQ(2u, page_node->children().size());
ui::AXNode* paragraph_node = page_node->children()[0];
ASSERT_TRUE(paragraph_node);
EXPECT_EQ(ax::mojom::Role::kParagraph, paragraph_node->data().role);
EXPECT_TRUE(paragraph_node->GetBoolAttribute(
ax::mojom::BoolAttribute::kIsLineBreakingObject));
ASSERT_EQ(1u, paragraph_node->children().size());
ui::AXNode* link_node = paragraph_node->children()[0];
ASSERT_TRUE(link_node);
EXPECT_EQ(kChromiumTestUrl,
link_node->GetStringAttribute(ax::mojom::StringAttribute::kUrl));
EXPECT_EQ(ax::mojom::Role::kLink, link_node->data().role);
EXPECT_EQ(gfx::RectF(1.0f, 1.0f, 5.0f, 6.0f),
link_node->data().relative_bounds.bounds);
ASSERT_EQ(1u, link_node->children().size());
paragraph_node = page_node->children()[1];
ASSERT_TRUE(paragraph_node);
EXPECT_EQ(ax::mojom::Role::kParagraph, paragraph_node->data().role);
EXPECT_TRUE(paragraph_node->GetBoolAttribute(
ax::mojom::BoolAttribute::kIsLineBreakingObject));
ASSERT_EQ(3u, paragraph_node->children().size());
ui::AXNode* static_text_node = paragraph_node->children()[0];
ASSERT_TRUE(static_text_node);
EXPECT_EQ(ax::mojom::Role::kStaticText, static_text_node->data().role);
ASSERT_EQ(1u, static_text_node->children().size());
ui::AXNode* image_node = paragraph_node->children()[1];
ASSERT_TRUE(image_node);
EXPECT_EQ(ax::mojom::Role::kImage, image_node->data().role);
EXPECT_EQ(gfx::RectF(8.0f, 9.0f, 2.0f, 1.0f),
image_node->data().relative_bounds.bounds);
EXPECT_EQ(kTestAltText,
image_node->GetStringAttribute(ax::mojom::StringAttribute::kName));
image_node = paragraph_node->children()[2];
ASSERT_TRUE(image_node);
EXPECT_EQ(ax::mojom::Role::kImage, image_node->data().role);
EXPECT_EQ(gfx::RectF(11.0f, 14.0f, 5.0f, 8.0f),
image_node->data().relative_bounds.bounds);
EXPECT_EQ(l10n_util::GetStringUTF8(IDS_AX_UNLABELED_IMAGE_ROLE_DESCRIPTION),
image_node->GetStringAttribute(ax::mojom::StringAttribute::kName));
}
TEST_F(PdfAccessibilityTreeTest, TestHighlightCreation) {
// Enable feature flag
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitAndEnableFeature(
chrome_pdf::features::kAccessiblePDFHighlight);
constexpr uint32_t kHighlightWhiteColor = MakeARGB(255, 255, 255, 255);
text_runs_.emplace_back(kFirstTextRun);
text_runs_.emplace_back(kSecondTextRun);
chars_.insert(chars_.end(), std::begin(kDummyCharsData),
std::end(kDummyCharsData));
{
ppapi::PdfAccessibilityHighlightInfo highlight;
highlight.bounds = PP_MakeFloatRectFromXYWH(1.0f, 1.0f, 5.0f, 6.0f);
highlight.text_run_index = 0;
highlight.text_run_count = 2;
highlight.color = kHighlightWhiteColor;
page_objects_.highlights.push_back(std::move(highlight));
}
page_info_.text_run_count = text_runs_.size();
page_info_.char_count = chars_.size();
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
FakeRendererPpapiHost host(view_->GetMainRenderFrame());
PP_Instance instance = 0;
pdf::PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
/*
* Expected tree structure
* Document
* ++ Region
* ++++ Paragraph
* ++++++ Highlight
* ++++++++ Static Text
*/
ui::AXNode* root_node = pdf_accessibility_tree.GetRoot();
ASSERT_TRUE(root_node);
EXPECT_EQ(ax::mojom::Role::kDocument, root_node->data().role);
ASSERT_EQ(1u, root_node->children().size());
ui::AXNode* page_node = root_node->children()[0];
ASSERT_TRUE(page_node);
EXPECT_EQ(ax::mojom::Role::kRegion, page_node->data().role);
ASSERT_EQ(1u, page_node->children().size());
ui::AXNode* paragraph_node = page_node->children()[0];
ASSERT_TRUE(paragraph_node);
EXPECT_EQ(ax::mojom::Role::kParagraph, paragraph_node->data().role);
ASSERT_EQ(1u, paragraph_node->children().size());
ui::AXNode* highlight_node = paragraph_node->children()[0];
ASSERT_TRUE(highlight_node);
EXPECT_EQ(ax::mojom::Role::kPdfActionableHighlight,
highlight_node->data().role);
EXPECT_EQ(l10n_util::GetStringUTF8(IDS_AX_ROLE_DESCRIPTION_PDF_HIGHLIGHT),
highlight_node->GetStringAttribute(
ax::mojom::StringAttribute::kRoleDescription));
EXPECT_EQ(gfx::RectF(1.0f, 1.0f, 5.0f, 6.0f),
highlight_node->data().relative_bounds.bounds);
ASSERT_TRUE(highlight_node->HasIntAttribute(
ax::mojom::IntAttribute::kBackgroundColor));
EXPECT_EQ(kHighlightWhiteColor,
static_cast<uint32_t>(highlight_node->GetIntAttribute(
ax::mojom::IntAttribute::kBackgroundColor)));
ASSERT_EQ(1u, highlight_node->children().size());
ui::AXNode* static_text_node = highlight_node->children()[0];
ASSERT_TRUE(static_text_node);
EXPECT_EQ(ax::mojom::Role::kStaticText, static_text_node->data().role);
ASSERT_EQ(2u, static_text_node->children().size());
}
TEST_F(PdfAccessibilityTreeTest, TestPreviousNextOnLine) {
text_runs_.emplace_back(kFirstRunMultiLine);
text_runs_.emplace_back(kSecondRunMultiLine);
text_runs_.emplace_back(kThirdRunMultiLine);
text_runs_.emplace_back(kFourthRunMultiLine);
chars_.insert(chars_.end(), std::begin(kDummyCharsData),
std::end(kDummyCharsData));
{
ppapi::PdfAccessibilityLinkInfo link;
link.bounds = PP_MakeFloatRectFromXYWH(0.0f, 0.0f, 0.0f, 0.0f);
link.url = kChromiumTestUrl;
link.text_run_index = 2;
link.text_run_count = 2;
page_objects_.links.push_back(std::move(link));
}
page_info_.text_run_count = text_runs_.size();
page_info_.char_count = chars_.size();
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
FakeRendererPpapiHost host(view_->GetMainRenderFrame());
PP_Instance instance = 0;
pdf::PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
/*
* Expected tree structure
* Document
* ++ Region
* ++++ Paragraph
* ++++++ Static Text
* ++++++++ Inline Text Box
* ++++++++ Inline Text Box
* ++++++ Link
* ++++++++ Static Text
* ++++++++++ Inline Text Box
* ++++++++++ Inline Text Box
*/
ui::AXNode* root_node = pdf_accessibility_tree.GetRoot();
ASSERT_TRUE(root_node);
EXPECT_EQ(ax::mojom::Role::kDocument, root_node->data().role);
ASSERT_EQ(1u, root_node->children().size());
ui::AXNode* page_node = root_node->children()[0];
ASSERT_TRUE(page_node);
EXPECT_EQ(ax::mojom::Role::kRegion, page_node->data().role);
ASSERT_EQ(1u, page_node->children().size());
ui::AXNode* paragraph_node = page_node->children()[0];
ASSERT_TRUE(paragraph_node);
EXPECT_EQ(ax::mojom::Role::kParagraph, paragraph_node->data().role);
EXPECT_TRUE(paragraph_node->GetBoolAttribute(
ax::mojom::BoolAttribute::kIsLineBreakingObject));
ASSERT_EQ(2u, paragraph_node->children().size());
ui::AXNode* static_text_node = paragraph_node->children()[0];
ASSERT_TRUE(static_text_node);
EXPECT_EQ(ax::mojom::Role::kStaticText, static_text_node->data().role);
ASSERT_EQ(2u, static_text_node->children().size());
ui::AXNode* previous_inline_node = static_text_node->children()[0];
ASSERT_TRUE(previous_inline_node);
EXPECT_EQ(ax::mojom::Role::kInlineTextBox, previous_inline_node->data().role);
ASSERT_FALSE(previous_inline_node->HasIntAttribute(
ax::mojom::IntAttribute::kPreviousOnLineId));
ui::AXNode* next_inline_node = static_text_node->children()[1];
ASSERT_TRUE(next_inline_node);
EXPECT_EQ(ax::mojom::Role::kInlineTextBox, next_inline_node->data().role);
ASSERT_TRUE(next_inline_node->HasIntAttribute(
ax::mojom::IntAttribute::kNextOnLineId));
ASSERT_EQ(next_inline_node->data().id,
previous_inline_node->GetIntAttribute(
ax::mojom::IntAttribute::kNextOnLineId));
ASSERT_EQ(previous_inline_node->data().id,
next_inline_node->GetIntAttribute(
ax::mojom::IntAttribute::kPreviousOnLineId));
ui::AXNode* link_node = paragraph_node->children()[1];
ASSERT_TRUE(link_node);
EXPECT_EQ(kChromiumTestUrl,
link_node->GetStringAttribute(ax::mojom::StringAttribute::kUrl));
EXPECT_EQ(ax::mojom::Role::kLink, link_node->data().role);
ASSERT_EQ(1u, link_node->children().size());
static_text_node = link_node->children()[0];
ASSERT_TRUE(static_text_node);
EXPECT_EQ(ax::mojom::Role::kStaticText, static_text_node->data().role);
ASSERT_EQ(2u, static_text_node->children().size());
previous_inline_node = static_text_node->children()[0];
ASSERT_TRUE(previous_inline_node);
EXPECT_EQ(ax::mojom::Role::kInlineTextBox, previous_inline_node->data().role);
ASSERT_TRUE(previous_inline_node->HasIntAttribute(
ax::mojom::IntAttribute::kPreviousOnLineId));
// Test that text and link on the same line are connected.
ASSERT_EQ(next_inline_node->data().id,
previous_inline_node->GetIntAttribute(
ax::mojom::IntAttribute::kPreviousOnLineId));
next_inline_node = static_text_node->children()[1];
ASSERT_TRUE(next_inline_node);
EXPECT_EQ(ax::mojom::Role::kInlineTextBox, next_inline_node->data().role);
ASSERT_FALSE(next_inline_node->HasIntAttribute(
ax::mojom::IntAttribute::kNextOnLineId));
ASSERT_EQ(next_inline_node->data().id,
previous_inline_node->GetIntAttribute(
ax::mojom::IntAttribute::kNextOnLineId));
ASSERT_EQ(previous_inline_node->data().id,
next_inline_node->GetIntAttribute(
ax::mojom::IntAttribute::kPreviousOnLineId));
}
TEST_F(PdfAccessibilityTreeTest, TextRunsAndCharsMismatch) {
// |chars_| and |text_runs_| span over the same page text. They should denote
// the same page text size, but |text_runs_| is incorrect and only denotes 1
// of 2 text runs.
text_runs_.emplace_back(kFirstTextRun);
chars_.insert(chars_.end(), std::begin(kDummyCharsData),
std::end(kDummyCharsData));
page_info_.text_run_count = text_runs_.size();
page_info_.char_count = chars_.size();
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
FakeRendererPpapiHost host(view_->GetMainRenderFrame());
PP_Instance instance = 0;
PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
// In case of invalid data, only the initialized data should be in the tree.
ASSERT_EQ(ax::mojom::Role::kUnknown,
pdf_accessibility_tree.GetRoot()->data().role);
ASSERT_EQ(0u, pdf_accessibility_tree.GetRoot()->children().size());
}
TEST_F(PdfAccessibilityTreeTest, UnsortedLinkVector) {
text_runs_.emplace_back(kFirstTextRun);
text_runs_.emplace_back(kSecondTextRun);
chars_.insert(chars_.end(), std::begin(kDummyCharsData),
std::end(kDummyCharsData));
{
// Add first link in the vector.
ppapi::PdfAccessibilityLinkInfo link;
link.bounds = PP_MakeFloatRectFromXYWH(0.0f, 0.0f, 0.0f, 0.0f);
link.text_run_index = 2;
link.text_run_count = 0;
page_objects_.links.push_back(std::move(link));
}
{
// Add second link in the vector.
ppapi::PdfAccessibilityLinkInfo link;
link.bounds = PP_MakeFloatRectFromXYWH(0.0f, 0.0f, 0.0f, 0.0f);
link.text_run_index = 0;
link.text_run_count = 1;
page_objects_.links.push_back(std::move(link));
}
page_info_.text_run_count = text_runs_.size();
page_info_.char_count = chars_.size();
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
FakeRendererPpapiHost host(view_->GetMainRenderFrame());
PP_Instance instance = 0;
PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
// In case of invalid data, only the initialized data should be in the tree.
ASSERT_EQ(ax::mojom::Role::kUnknown,
pdf_accessibility_tree.GetRoot()->data().role);
ASSERT_EQ(0u, pdf_accessibility_tree.GetRoot()->children().size());
}
TEST_F(PdfAccessibilityTreeTest, OutOfBoundLink) {
text_runs_.emplace_back(kFirstTextRun);
text_runs_.emplace_back(kSecondTextRun);
chars_.insert(chars_.end(), std::begin(kDummyCharsData),
std::end(kDummyCharsData));
{
ppapi::PdfAccessibilityLinkInfo link;
link.bounds = PP_MakeFloatRectFromXYWH(0.0f, 0.0f, 0.0f, 0.0f);
link.text_run_index = 3;
link.text_run_count = 0;
page_objects_.links.push_back(std::move(link));
}
page_info_.text_run_count = text_runs_.size();
page_info_.char_count = chars_.size();
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
FakeRendererPpapiHost host(view_->GetMainRenderFrame());
PP_Instance instance = 0;
PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
// In case of invalid data, only the initialized data should be in the tree.
ASSERT_EQ(ax::mojom::Role::kUnknown,
pdf_accessibility_tree.GetRoot()->data().role);
ASSERT_EQ(0u, pdf_accessibility_tree.GetRoot()->children().size());
}
TEST_F(PdfAccessibilityTreeTest, UnsortedImageVector) {
text_runs_.emplace_back(kFirstTextRun);
text_runs_.emplace_back(kSecondTextRun);
chars_.insert(chars_.end(), std::begin(kDummyCharsData),
std::end(kDummyCharsData));
{
// Add first image to the vector.
ppapi::PdfAccessibilityImageInfo image;
image.bounds = PP_MakeFloatRectFromXYWH(0.0f, 0.0f, 0.0f, 0.0f);
image.text_run_index = 1;
page_objects_.images.push_back(std::move(image));
}
{
// Add second image to the vector.
ppapi::PdfAccessibilityImageInfo image;
image.bounds = PP_MakeFloatRectFromXYWH(0.0f, 0.0f, 0.0f, 0.0f);
image.text_run_index = 0;
page_objects_.images.push_back(std::move(image));
}
page_info_.text_run_count = text_runs_.size();
page_info_.char_count = chars_.size();
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
FakeRendererPpapiHost host(view_->GetMainRenderFrame());
PP_Instance instance = 0;
PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
// In case of invalid data, only the initialized data should be in the tree.
ASSERT_EQ(ax::mojom::Role::kUnknown,
pdf_accessibility_tree.GetRoot()->data().role);
ASSERT_EQ(0u, pdf_accessibility_tree.GetRoot()->children().size());
}
TEST_F(PdfAccessibilityTreeTest, OutOfBoundImage) {
text_runs_.emplace_back(kFirstTextRun);
text_runs_.emplace_back(kSecondTextRun);
chars_.insert(chars_.end(), std::begin(kDummyCharsData),
std::end(kDummyCharsData));
{
ppapi::PdfAccessibilityImageInfo image;
image.bounds = PP_MakeFloatRectFromXYWH(0.0f, 0.0f, 0.0f, 0.0f);
image.text_run_index = 3;
page_objects_.images.push_back(std::move(image));
}
page_info_.text_run_count = text_runs_.size();
page_info_.char_count = chars_.size();
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
FakeRendererPpapiHost host(view_->GetMainRenderFrame());
PP_Instance instance = 0;
PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
// In case of invalid data, only the initialized data should be in the tree.
ASSERT_EQ(ax::mojom::Role::kUnknown,
pdf_accessibility_tree.GetRoot()->data().role);
ASSERT_EQ(0u, pdf_accessibility_tree.GetRoot()->children().size());
}
TEST_F(PdfAccessibilityTreeTest, UnsortedHighlightVector) {
text_runs_.emplace_back(kFirstTextRun);
text_runs_.emplace_back(kSecondTextRun);
chars_.insert(chars_.end(), std::begin(kDummyCharsData),
std::end(kDummyCharsData));
{
// Add first highlight in the vector.
ppapi::PdfAccessibilityHighlightInfo highlight;
highlight.bounds = PP_MakeFloatRectFromXYWH(0.0f, 0.0f, 1.0f, 1.0f);
highlight.text_run_index = 2;
highlight.text_run_count = 0;
page_objects_.highlights.push_back(std::move(highlight));
}
{
// Add second highlight in the vector.
ppapi::PdfAccessibilityHighlightInfo highlight;
highlight.bounds = PP_MakeFloatRectFromXYWH(2.0f, 2.0f, 1.0f, 1.0f);
highlight.text_run_index = 0;
highlight.text_run_count = 1;
page_objects_.highlights.push_back(std::move(highlight));
}
page_info_.text_run_count = text_runs_.size();
page_info_.char_count = chars_.size();
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
ASSERT_TRUE(render_frame);
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
FakeRendererPpapiHost host(view_->GetMainRenderFrame());
PP_Instance instance = 0;
PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
// In case of invalid data, only the initialized data should be in the tree.
ASSERT_EQ(ax::mojom::Role::kUnknown,
pdf_accessibility_tree.GetRoot()->data().role);
ASSERT_EQ(0u, pdf_accessibility_tree.GetRoot()->children().size());
}
TEST_F(PdfAccessibilityTreeTest, OutOfBoundHighlight) {
text_runs_.emplace_back(kFirstTextRun);
text_runs_.emplace_back(kSecondTextRun);
chars_.insert(chars_.end(), std::begin(kDummyCharsData),
std::end(kDummyCharsData));
{
ppapi::PdfAccessibilityHighlightInfo highlight;
highlight.bounds = PP_MakeFloatRectFromXYWH(0.0f, 0.0f, 1.0f, 1.0f);
highlight.text_run_index = 3;
highlight.text_run_count = 0;
page_objects_.highlights.push_back(std::move(highlight));
}
page_info_.text_run_count = text_runs_.size();
page_info_.char_count = chars_.size();
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
ASSERT_TRUE(render_frame);
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
FakeRendererPpapiHost host(view_->GetMainRenderFrame());
PP_Instance instance = 0;
PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
// In case of invalid data, only the initialized data should be in the tree.
ASSERT_EQ(ax::mojom::Role::kUnknown,
pdf_accessibility_tree.GetRoot()->data().role);
ASSERT_EQ(0u, pdf_accessibility_tree.GetRoot()->children().size());
}
TEST_F(PdfAccessibilityTreeTest, TestActionDataConversion) {
// This test verifies the AXActionData conversion to
// PP_AccessibilityActionData.
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
ActionHandlingFakePepperPluginInstance fake_pepper_instance;
FakeRendererPpapiHost host(view_->GetMainRenderFrame(),
&fake_pepper_instance);
PP_Instance instance = 0;
PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
ui::AXNode* root_node = pdf_accessibility_tree.GetRoot();
std::unique_ptr<ui::AXActionTarget> pdf_action_target =
pdf_accessibility_tree.CreateActionTarget(*root_node);
ASSERT_TRUE(pdf_action_target);
EXPECT_EQ(ui::AXActionTarget::Type::kPdf, pdf_action_target->GetType());
EXPECT_TRUE(pdf_action_target->ScrollToMakeVisibleWithSubFocus(
gfx::Rect(0, 0, 50, 50), ax::mojom::ScrollAlignment::kScrollAlignmentLeft,
ax::mojom::ScrollAlignment::kScrollAlignmentTop,
ax::mojom::ScrollBehavior::kDoNotScrollIfVisible));
PP_PdfAccessibilityActionData action_data =
fake_pepper_instance.GetReceivedActionData();
EXPECT_EQ(PP_PdfAccessibilityAction::PP_PDF_SCROLL_TO_MAKE_VISIBLE,
action_data.action);
EXPECT_EQ(PP_PdfAccessibilityScrollAlignment::PP_PDF_SCROLL_ALIGNMENT_LEFT,
action_data.horizontal_scroll_alignment);
EXPECT_EQ(PP_PdfAccessibilityScrollAlignment::PP_PDF_SCROLL_ALIGNMENT_TOP,
action_data.vertical_scroll_alignment);
EXPECT_TRUE(pdf_action_target->ScrollToMakeVisibleWithSubFocus(
gfx::Rect(0, 0, 50, 50),
ax::mojom::ScrollAlignment::kScrollAlignmentRight,
ax::mojom::ScrollAlignment::kScrollAlignmentTop,
ax::mojom::ScrollBehavior::kDoNotScrollIfVisible));
action_data = fake_pepper_instance.GetReceivedActionData();
EXPECT_EQ(PP_PdfAccessibilityScrollAlignment::PP_PDF_SCROLL_ALIGNMENT_RIGHT,
action_data.horizontal_scroll_alignment);
EXPECT_TRUE(pdf_action_target->ScrollToMakeVisibleWithSubFocus(
gfx::Rect(0, 0, 50, 50),
ax::mojom::ScrollAlignment::kScrollAlignmentBottom,
ax::mojom::ScrollAlignment::kScrollAlignmentBottom,
ax::mojom::ScrollBehavior::kDoNotScrollIfVisible));
action_data = fake_pepper_instance.GetReceivedActionData();
EXPECT_EQ(PP_PdfAccessibilityScrollAlignment::PP_PDF_SCROLL_ALIGNMENT_BOTTOM,
action_data.horizontal_scroll_alignment);
EXPECT_TRUE(pdf_action_target->ScrollToMakeVisibleWithSubFocus(
gfx::Rect(0, 0, 50, 50),
ax::mojom::ScrollAlignment::kScrollAlignmentCenter,
ax::mojom::ScrollAlignment::kScrollAlignmentClosestEdge,
ax::mojom::ScrollBehavior::kDoNotScrollIfVisible));
action_data = fake_pepper_instance.GetReceivedActionData();
EXPECT_EQ(PP_PdfAccessibilityScrollAlignment::PP_PDF_SCROLL_ALIGNMENT_CENTER,
action_data.horizontal_scroll_alignment);
EXPECT_EQ(
PP_PdfAccessibilityScrollAlignment::PP_PDF_SCROLL_ALIGNMENT_CLOSEST_EDGE,
action_data.vertical_scroll_alignment);
CompareRect({{0, 0}, {1, 1}}, action_data.target_rect);
}
TEST_F(PdfAccessibilityTreeTest, TestScrollToGlobalPointDataConversion) {
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
ActionHandlingFakePepperPluginInstance fake_pepper_instance;
FakeRendererPpapiHost host(view_->GetMainRenderFrame(),
&fake_pepper_instance);
PP_Instance instance = 0;
PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
ui::AXNode* root_node = pdf_accessibility_tree.GetRoot();
std::unique_ptr<ui::AXActionTarget> pdf_action_target =
pdf_accessibility_tree.CreateActionTarget(*root_node);
ASSERT_TRUE(pdf_action_target);
EXPECT_EQ(ui::AXActionTarget::Type::kPdf, pdf_action_target->GetType());
EXPECT_TRUE(pdf_action_target->ScrollToGlobalPoint(gfx::Point(50, 50)));
PP_PdfAccessibilityActionData action_data =
fake_pepper_instance.GetReceivedActionData();
EXPECT_EQ(PP_PdfAccessibilityAction::PP_PDF_SCROLL_TO_GLOBAL_POINT,
action_data.action);
EXPECT_EQ(50, action_data.target_point.x);
EXPECT_EQ(50, action_data.target_point.y);
CompareRect({{0, 0}, {1, 1}}, action_data.target_rect);
}
TEST_F(PdfAccessibilityTreeTest, TestClickActionDataConversion) {
text_runs_.emplace_back(kFirstTextRun);
text_runs_.emplace_back(kSecondTextRun);
chars_.insert(chars_.end(), std::begin(kDummyCharsData),
std::end(kDummyCharsData));
{
ppapi::PdfAccessibilityLinkInfo link;
link.url = kChromiumTestUrl;
link.text_run_index = 0;
link.text_run_count = 1;
link.bounds = {{0, 0}, {10, 10}};
link.index_in_page = 0;
page_objects_.links.push_back(std::move(link));
}
{
ppapi::PdfAccessibilityLinkInfo link;
link.url = kChromiumTestUrl;
link.text_run_index = 1;
link.text_run_count = 1;
link.bounds = {{10, 10}, {10, 10}};
link.index_in_page = 1;
page_objects_.links.push_back(std::move(link));
}
page_info_.text_run_count = text_runs_.size();
page_info_.char_count = chars_.size();
content::RenderFrame* render_frame = view_->GetMainRenderFrame();
render_frame->SetAccessibilityModeForTest(ui::AXMode::kWebContents);
ASSERT_TRUE(render_frame->GetRenderAccessibility());
ActionHandlingFakePepperPluginInstance fake_pepper_instance;
FakeRendererPpapiHost host(view_->GetMainRenderFrame(),
&fake_pepper_instance);
PP_Instance instance = 0;
PdfAccessibilityTree pdf_accessibility_tree(&host, instance);
pdf_accessibility_tree.SetAccessibilityViewportInfo(viewport_info_);
pdf_accessibility_tree.SetAccessibilityDocInfo(doc_info_);
pdf_accessibility_tree.SetAccessibilityPageInfo(page_info_, text_runs_,
chars_, page_objects_);
ui::AXNode* root_node = pdf_accessibility_tree.GetRoot();
const std::vector<ui::AXNode*>& page_nodes = root_node->children();
ASSERT_EQ(1u, page_nodes.size());
const std::vector<ui::AXNode*>& para_nodes = page_nodes[0]->children();
ASSERT_EQ(2u, para_nodes.size());
const std::vector<ui::AXNode*>& link_nodes = para_nodes[1]->children();
ASSERT_EQ(1u, link_nodes.size());
const ui::AXNode* link_node = link_nodes[0];
std::unique_ptr<ui::AXActionTarget> pdf_action_target =
pdf_accessibility_tree.CreateActionTarget(*link_node);
ASSERT_EQ(ui::AXActionTarget::Type::kPdf, pdf_action_target->GetType());
pdf_action_target->Click();
PP_PdfAccessibilityActionData pdf_action_data =
fake_pepper_instance.GetReceivedActionData();
EXPECT_EQ(PP_PdfAccessibilityAction::PP_PDF_DO_DEFAULT_ACTION,
pdf_action_data.action);
EXPECT_EQ(PP_PdfAccessibilityScrollAlignment::PP_PDF_SCROLL_NONE,
pdf_action_data.horizontal_scroll_alignment);
EXPECT_EQ(PP_PdfAccessibilityScrollAlignment::PP_PDF_SCROLL_NONE,
pdf_action_data.vertical_scroll_alignment);
EXPECT_EQ(0u, pdf_action_data.page_index);
EXPECT_EQ(PP_PdfAccessibilityAnnotationType::PP_PDF_LINK,
pdf_action_data.annotation_type);
EXPECT_EQ(1u, pdf_action_data.annotation_index);
CompareRect({{0, 0}, {0, 0}}, pdf_action_data.target_rect);
}
TEST_F(PdfAccessibilityTreeTest, TestEmptyPdfAxActions) {
content::RenderFrame* render_frame = view_->GetMainRenderFrame();