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ax_platform_node_textrangeprovider_win_browsertest.cc
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ax_platform_node_textrangeprovider_win_browsertest.cc
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// Copyright 2019 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 "ui/accessibility/platform/ax_platform_node_textrangeprovider_win.h"
#include "base/command_line.h"
#include "base/win/scoped_bstr.h"
#include "base/win/scoped_safearray.h"
#include "base/win/scoped_variant.h"
#include "base/win/windows_version.h"
#include "content/browser/accessibility/accessibility_content_browsertest.h"
#include "content/browser/accessibility/browser_accessibility.h"
#include "content/browser/accessibility/browser_accessibility_com_win.h"
#include "content/browser/accessibility/browser_accessibility_manager.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/test/accessibility_notification_waiter.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/public/test/hit_test_region_observer.h"
#include "content/shell/browser/shell.h"
#include "content/test/content_browser_test_utils_internal.h"
#include "net/dns/mock_host_resolver.h"
#include "ui/accessibility/accessibility_switches.h"
#include "ui/accessibility/ax_node_position.h"
#include "ui/accessibility/ax_tree_id.h"
using Microsoft::WRL::ComPtr;
namespace content {
#define ASSERT_UIA_ELEMENTNOTAVAILABLE(expr) \
ASSERT_EQ(static_cast<HRESULT>(UIA_E_ELEMENTNOTAVAILABLE), (expr))
#define EXPECT_UIA_DOUBLE_SAFEARRAY_EQ(safearray, expected_property_values) \
{ \
EXPECT_EQ(sizeof(V_R8(LPVARIANT(NULL))), \
::SafeArrayGetElemsize(safearray)); \
ASSERT_EQ(1u, SafeArrayGetDim(safearray)); \
LONG array_lower_bound; \
ASSERT_HRESULT_SUCCEEDED( \
SafeArrayGetLBound(safearray, 1, &array_lower_bound)); \
LONG array_upper_bound; \
ASSERT_HRESULT_SUCCEEDED( \
SafeArrayGetUBound(safearray, 1, &array_upper_bound)); \
double* array_data; \
ASSERT_HRESULT_SUCCEEDED(::SafeArrayAccessData( \
safearray, reinterpret_cast<void**>(&array_data))); \
size_t count = array_upper_bound - array_lower_bound + 1; \
ASSERT_EQ(expected_property_values.size(), count); \
for (size_t i = 0; i < count; ++i) { \
EXPECT_EQ(array_data[i], expected_property_values[i]); \
} \
ASSERT_HRESULT_SUCCEEDED(::SafeArrayUnaccessData(safearray)); \
}
#define EXPECT_UIA_SAFEARRAY_EQ(safearray, expected_property_values) \
{ \
using T = typename decltype(expected_property_values)::value_type; \
EXPECT_EQ(sizeof(T), ::SafeArrayGetElemsize(safearray)); \
EXPECT_EQ(1u, SafeArrayGetDim(safearray)); \
LONG array_lower_bound; \
EXPECT_HRESULT_SUCCEEDED( \
SafeArrayGetLBound(safearray, 1, &array_lower_bound)); \
LONG array_upper_bound; \
EXPECT_HRESULT_SUCCEEDED( \
SafeArrayGetUBound(safearray, 1, &array_upper_bound)); \
const size_t count = array_upper_bound - array_lower_bound + 1; \
EXPECT_EQ(expected_property_values.size(), count); \
if (sizeof(T) == ::SafeArrayGetElemsize(safearray) && \
count == expected_property_values.size()) { \
T* array_data; \
EXPECT_HRESULT_SUCCEEDED(::SafeArrayAccessData( \
safearray, reinterpret_cast<void**>(&array_data))); \
for (size_t i = 0; i < count; ++i) { \
EXPECT_EQ(array_data[i], expected_property_values[i]); \
} \
EXPECT_HRESULT_SUCCEEDED(::SafeArrayUnaccessData(safearray)); \
} \
}
#define EXPECT_UIA_TEXTRANGE_EQ(provider, expected_content) \
{ \
base::win::ScopedBstr provider_content; \
ASSERT_HRESULT_SUCCEEDED( \
provider->GetText(-1, provider_content.Receive())); \
EXPECT_STREQ(expected_content, provider_content.Get()); \
}
#define EXPECT_UIA_MOVE_ENDPOINT_BY_UNIT(text_range_provider, endpoint, unit, \
count, expected_text, expected_count) \
{ \
int result_count; \
EXPECT_HRESULT_SUCCEEDED(text_range_provider->MoveEndpointByUnit( \
endpoint, unit, count, &result_count)); \
EXPECT_EQ(expected_count, result_count); \
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider, expected_text); \
}
#define EXPECT_UIA_MOVE(text_range_provider, unit, count, expected_text, \
expected_count) \
{ \
int result_count; \
EXPECT_HRESULT_SUCCEEDED( \
text_range_provider->Move(unit, count, &result_count)); \
EXPECT_EQ(expected_count, result_count); \
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider, expected_text); \
}
class AXPlatformNodeTextRangeProviderWinBrowserTest
: public AccessibilityContentBrowserTest {
protected:
const std::wstring kEmbeddedCharacterAsString{
base::as_wcstr(&ui::AXPlatformNodeBase::kEmbeddedCharacter), 1};
void SetUpCommandLine(base::CommandLine* command_line) override {
base::CommandLine::ForCurrentProcess()->AppendSwitch(
::switches::kEnableExperimentalUIAutomation);
}
void SetUpOnMainThread() override {
host_resolver()->AddRule("*", "127.0.0.1");
SetupCrossSiteRedirector(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
}
RenderWidgetHostImpl* GetWidgetHost() {
return RenderWidgetHostImpl::From(
shell()->web_contents()->GetRenderViewHost()->GetWidget());
}
void SynchronizeThreads() {
MainThreadFrameObserver observer(GetWidgetHost());
observer.Wait();
}
BrowserAccessibilityManager* GetManager() const {
WebContentsImpl* web_contents =
static_cast<WebContentsImpl*>(shell()->web_contents());
return web_contents->GetRootBrowserAccessibilityManager();
}
void GetTextRangeProviderFromTextNode(
BrowserAccessibility& target_node,
ITextRangeProvider** text_range_provider) {
BrowserAccessibilityComWin* target_node_com =
ToBrowserAccessibilityWin(&target_node)->GetCOM();
ASSERT_NE(nullptr, target_node_com);
ComPtr<ITextProvider> text_provider;
ASSERT_HRESULT_SUCCEEDED(
target_node_com->GetPatternProvider(UIA_TextPatternId, &text_provider));
ASSERT_NE(nullptr, text_provider.Get());
ASSERT_HRESULT_SUCCEEDED(
text_provider->get_DocumentRange(text_range_provider));
}
void GetDocumentRangeForMarkup(const std::string& html_markup,
ITextRangeProvider** text_range_provider) {
LoadInitialAccessibilityTreeFromHtml(html_markup);
GetTextRangeProviderFromTextNode(*GetManager()->GetRoot(),
text_range_provider);
}
// Run through ITextRangeProvider::ScrollIntoView top tests. It's assumed that
// the browser has already loaded an HTML document's accessibility tree.
// Assert the text range generated for an accessibility node is scrolled to be
// flush with the top of the viewport.
// expected_start_role: the expected accessibility role of the text range
// start node under test
// fstart: the function to retrieve the accessibility text
// range start node under test from the root
// accessibility node
// expected_end_role: the expected accessibility role of the text range
// end node under test
// fend: the function to retrieve the accessibility text
// range end node under test from the root
// accessibility node
// align_to_top: true to test top viewport alignment, otherwise test
// bottom viewport alignment
void ScrollIntoViewBrowserTestTemplate(
const ax::mojom::Role expected_start_role,
BrowserAccessibility* (BrowserAccessibility::*fstart)() const,
const ax::mojom::Role expected_end_role,
BrowserAccessibility* (BrowserAccessibility::*fend)() const,
const bool align_to_top) {
BrowserAccessibility* root_browser_accessibility =
GetRootAndAssertNonNull();
BrowserAccessibility* browser_accessibility_start =
(root_browser_accessibility->*fstart)();
ASSERT_NE(nullptr, browser_accessibility_start);
ASSERT_EQ(expected_start_role, browser_accessibility_start->GetRole());
BrowserAccessibility* browser_accessibility_end =
(root_browser_accessibility->*fend)();
ASSERT_NE(nullptr, browser_accessibility_end);
ASSERT_EQ(expected_end_role, browser_accessibility_end->GetRole());
AssertScrollIntoView(root_browser_accessibility,
browser_accessibility_start, browser_accessibility_end,
align_to_top);
}
// Run through ITextRangeProvider::ScrollIntoView top tests. It's assumed that
// the browser has already loaded an HTML document's accessibility tree.
// Assert the text range generated for an accessibility node is scrolled to be
// flush with the top of the viewport.
// expected_start_role: the expected accessibility role of the text range
// start node under test
// fstart: the function to retrieve the accessibility text
// range start node under test from the root
// accessibility node
// fstart_arg: an index argument for fstart
// expected_end_role: the expected accessibility role of the text range
// end node under test
// fend: the function to retrieve the accessibility text
// range end node under test from the root
// accessibility node
// fend_arg: an index argument for fend
// align_to_top: true to test top viewport alignment, otherwise test
// bottom viewport alignment
void ScrollIntoViewBrowserTestTemplate(
const ax::mojom::Role expected_start_role,
BrowserAccessibility* (BrowserAccessibility::*fstart)(uint32_t) const,
const uint32_t fstart_arg,
const ax::mojom::Role expected_end_role,
BrowserAccessibility* (BrowserAccessibility::*fend)(uint32_t) const,
const uint32_t fend_arg,
const bool align_to_top) {
BrowserAccessibility* root_browser_accessibility =
GetRootAndAssertNonNull();
BrowserAccessibility* browser_accessibility_start =
(root_browser_accessibility->*fstart)(fstart_arg);
ASSERT_NE(nullptr, browser_accessibility_start);
ASSERT_EQ(expected_start_role, browser_accessibility_start->GetRole());
BrowserAccessibility* browser_accessibility_end =
(root_browser_accessibility->*fend)(fend_arg);
ASSERT_NE(nullptr, browser_accessibility_end);
ASSERT_EQ(expected_end_role, browser_accessibility_end->GetRole());
AssertScrollIntoView(root_browser_accessibility,
browser_accessibility_start, browser_accessibility_end,
align_to_top);
}
void ScrollIntoViewFromIframeBrowserTestTemplate(
const ax::mojom::Role expected_start_role,
BrowserAccessibility* (BrowserAccessibility::*fstart)() const,
const ax::mojom::Role expected_end_role,
BrowserAccessibility* (BrowserAccessibility::*fend)() const,
const bool align_to_top) {
BrowserAccessibility* root_browser_accessibility =
GetRootAndAssertNonNull();
BrowserAccessibility* leaf_iframe_browser_accessibility =
root_browser_accessibility->InternalDeepestLastChild();
ASSERT_NE(nullptr, leaf_iframe_browser_accessibility);
ASSERT_EQ(ax::mojom::Role::kIframe,
leaf_iframe_browser_accessibility->GetRole());
ui::AXTreeID iframe_tree_id = ui::AXTreeID::FromString(
leaf_iframe_browser_accessibility->GetStringAttribute(
ax::mojom::StringAttribute::kChildTreeId));
BrowserAccessibilityManager* iframe_browser_accessibility_manager =
BrowserAccessibilityManager::FromID(iframe_tree_id);
ASSERT_NE(nullptr, iframe_browser_accessibility_manager);
BrowserAccessibility* root_iframe_browser_accessibility =
iframe_browser_accessibility_manager->GetRoot();
ASSERT_NE(nullptr, root_iframe_browser_accessibility);
ASSERT_EQ(ax::mojom::Role::kRootWebArea,
root_iframe_browser_accessibility->GetRole());
BrowserAccessibility* browser_accessibility_start =
(root_iframe_browser_accessibility->*fstart)();
ASSERT_NE(nullptr, browser_accessibility_start);
ASSERT_EQ(expected_start_role, browser_accessibility_start->GetRole());
BrowserAccessibility* browser_accessibility_end =
(root_iframe_browser_accessibility->*fend)();
ASSERT_NE(nullptr, browser_accessibility_end);
ASSERT_EQ(expected_end_role, browser_accessibility_end->GetRole());
AssertScrollIntoView(root_iframe_browser_accessibility,
browser_accessibility_start, browser_accessibility_end,
align_to_top);
}
void AssertScrollIntoView(BrowserAccessibility* root_browser_accessibility,
BrowserAccessibility* browser_accessibility_start,
BrowserAccessibility* browser_accessibility_end,
const bool align_to_top) {
BrowserAccessibility::AXPosition start =
browser_accessibility_start->CreateTextPositionAt(0);
BrowserAccessibility::AXPosition end =
browser_accessibility_end->CreateTextPositionAt(0)
->CreatePositionAtEndOfAnchor();
BrowserAccessibilityComWin* start_browser_accessibility_com_win =
ToBrowserAccessibilityWin(browser_accessibility_start)->GetCOM();
ASSERT_NE(nullptr, start_browser_accessibility_com_win);
ComPtr<ITextRangeProvider> text_range_provider =
ui::AXPlatformNodeTextRangeProviderWin::CreateTextRangeProvider(
std::move(start), std::move(end));
ASSERT_NE(nullptr, text_range_provider);
gfx::Rect previous_range_bounds =
align_to_top ? browser_accessibility_start->GetBoundsRect(
ui::AXCoordinateSystem::kFrame,
ui::AXClippingBehavior::kUnclipped)
: browser_accessibility_end->GetBoundsRect(
ui::AXCoordinateSystem::kFrame,
ui::AXClippingBehavior::kUnclipped);
AccessibilityNotificationWaiter location_changed_waiter(
GetWebContentsAndAssertNonNull(), ui::kAXModeComplete,
ax::mojom::Event::kLocationChanged);
ASSERT_HRESULT_SUCCEEDED(text_range_provider->ScrollIntoView(align_to_top));
location_changed_waiter.WaitForNotification();
gfx::Rect root_page_bounds = root_browser_accessibility->GetBoundsRect(
ui::AXCoordinateSystem::kFrame, ui::AXClippingBehavior::kUnclipped);
if (align_to_top) {
gfx::Rect range_bounds = browser_accessibility_start->GetBoundsRect(
ui::AXCoordinateSystem::kFrame, ui::AXClippingBehavior::kUnclipped);
ASSERT_NE(previous_range_bounds.y(), range_bounds.y());
ASSERT_NEAR(root_page_bounds.y(), range_bounds.y(), 1);
} else {
gfx::Rect range_bounds = browser_accessibility_end->GetBoundsRect(
ui::AXCoordinateSystem::kFrame, ui::AXClippingBehavior::kUnclipped);
gfx::Size viewport_size =
gfx::Size(root_page_bounds.width(), root_page_bounds.height());
ASSERT_NE(previous_range_bounds.y(), range_bounds.y());
ASSERT_NEAR(root_page_bounds.y() + viewport_size.height(),
range_bounds.y() + range_bounds.height(), 1);
}
}
void ScrollIntoViewTopBrowserTestTemplate(
const ax::mojom::Role expected_role,
BrowserAccessibility* (BrowserAccessibility::*f)() const) {
ScrollIntoViewBrowserTestTemplate(expected_role, f, expected_role, f, true);
}
void ScrollIntoViewTopBrowserTestTemplate(
const ax::mojom::Role expected_role_start,
BrowserAccessibility* (BrowserAccessibility::*fstart)() const,
const ax::mojom::Role expected_role_end,
BrowserAccessibility* (BrowserAccessibility::*fend)() const) {
ScrollIntoViewBrowserTestTemplate(expected_role_start, fstart,
expected_role_end, fend, true);
}
void ScrollIntoViewTopBrowserTestTemplate(
const ax::mojom::Role expected_role_start,
BrowserAccessibility* (BrowserAccessibility::*fstart)(uint32_t) const,
const uint32_t fstart_arg,
const ax::mojom::Role expected_role_end,
BrowserAccessibility* (BrowserAccessibility::*fend)(uint32_t) const,
const uint32_t fend_arg) {
ScrollIntoViewBrowserTestTemplate(expected_role_start, fstart, fstart_arg,
expected_role_end, fend, fend_arg, true);
}
void ScrollIntoViewBottomBrowserTestTemplate(
const ax::mojom::Role expected_role,
BrowserAccessibility* (BrowserAccessibility::*f)() const) {
ScrollIntoViewBrowserTestTemplate(expected_role, f, expected_role, f,
false);
}
void ScrollIntoViewBottomBrowserTestTemplate(
const ax::mojom::Role expected_role_start,
BrowserAccessibility* (BrowserAccessibility::*fstart)() const,
const ax::mojom::Role expected_role_end,
BrowserAccessibility* (BrowserAccessibility::*fend)() const) {
ScrollIntoViewBrowserTestTemplate(expected_role_start, fstart,
expected_role_end, fend, false);
}
void ScrollIntoViewBottomBrowserTestTemplate(
const ax::mojom::Role expected_role_start,
BrowserAccessibility* (BrowserAccessibility::*fstart)(uint32_t) const,
const uint32_t fstart_arg,
const ax::mojom::Role expected_role_end,
BrowserAccessibility* (BrowserAccessibility::*fend)(uint32_t) const,
const uint32_t fend_arg) {
ScrollIntoViewBrowserTestTemplate(expected_role_start, fstart, fstart_arg,
expected_role_end, fend, fend_arg, false);
}
void AssertMoveByUnitForMarkup(
const TextUnit& unit,
const std::string& html_markup,
const std::vector<const wchar_t*>& expected_text) {
ComPtr<ITextRangeProvider> text_range;
GetDocumentRangeForMarkup(html_markup, &text_range);
ASSERT_NE(nullptr, text_range.Get());
text_range->ExpandToEnclosingUnit(unit);
size_t index = 0;
int count_moved = 1;
while (count_moved == 1 && index < expected_text.size()) {
EXPECT_UIA_TEXTRANGE_EQ(text_range, expected_text[index++]);
ASSERT_HRESULT_SUCCEEDED(text_range->Move(unit, 1, &count_moved));
}
EXPECT_EQ(expected_text.size(), index);
EXPECT_EQ(0, count_moved);
count_moved = -1;
index = expected_text.size();
while (count_moved == -1 && index > 0) {
EXPECT_UIA_TEXTRANGE_EQ(text_range, expected_text[--index]);
ASSERT_HRESULT_SUCCEEDED(text_range->Move(unit, -1, &count_moved));
}
EXPECT_EQ(0, count_moved);
EXPECT_EQ(0u, index);
}
};
IN_PROC_BROWSER_TEST_F(AXPlatformNodeTextRangeProviderWinBrowserTest,
GetChildren) {
LoadInitialAccessibilityTreeFromHtml(R"HTML(
<!DOCTYPE html>
<html>
<body>
<div>
<span>Text1</span>
<span>Text2</span>
<span>Text3</span>
</div>
<p>Before link</p>
<a href="#">
Link text 1
<span>Link text 2</span>
<span>Link text 3</span>
Link text 4
</a>
<p>After link</p>
<p>Before img</p>
<img alt="Image description">
<p>After img</p>
</body>
</html>
)HTML");
BrowserAccessibility* text1_node =
FindNode(ax::mojom::Role::kStaticText, "Text1");
ASSERT_NE(nullptr, text1_node);
ComPtr<IRawElementProviderSimple> text1_raw =
QueryInterfaceFromNode<IRawElementProviderSimple>(text1_node);
BrowserAccessibility* before_link_text_node =
FindNode(ax::mojom::Role::kStaticText, "Before link");
ASSERT_NE(nullptr, before_link_text_node);
ComPtr<IRawElementProviderSimple> before_link_text_raw =
QueryInterfaceFromNode<IRawElementProviderSimple>(before_link_text_node);
BrowserAccessibility* link_node = FindNode(
ax::mojom::Role::kLink, "Link text 1 Link text 2Link text 3 Link text 4");
ASSERT_NE(nullptr, link_node);
ComPtr<IRawElementProviderSimple> link_raw =
QueryInterfaceFromNode<IRawElementProviderSimple>(link_node);
BrowserAccessibility* link_text2_node =
FindNode(ax::mojom::Role::kStaticText, "Link text 2");
ASSERT_NE(nullptr, link_text2_node);
ComPtr<IRawElementProviderSimple> link_text2_raw =
QueryInterfaceFromNode<IRawElementProviderSimple>(link_text2_node);
BrowserAccessibility* link_text3_node =
FindNode(ax::mojom::Role::kStaticText, "Link text 3");
ASSERT_NE(nullptr, link_text3_node);
ComPtr<IRawElementProviderSimple> link_text3_raw =
QueryInterfaceFromNode<IRawElementProviderSimple>(link_text3_node);
BrowserAccessibility* after_link_text_node =
FindNode(ax::mojom::Role::kStaticText, "After link");
ASSERT_NE(nullptr, after_link_text_node);
ComPtr<IRawElementProviderSimple> after_link_text_raw =
QueryInterfaceFromNode<IRawElementProviderSimple>(after_link_text_node);
BrowserAccessibility* image_node =
FindNode(ax::mojom::Role::kImage, "Image description");
ASSERT_NE(nullptr, image_node);
ComPtr<IRawElementProviderSimple> image_raw =
QueryInterfaceFromNode<IRawElementProviderSimple>(image_node);
// 1. Validate that no children are returned when the range doesn't include
// any UIA embedded objects.
ComPtr<ITextRangeProvider> text_range;
GetTextRangeProviderFromTextNode(*text1_node, &text_range);
ASSERT_NE(nullptr, text_range.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range, L"Text1");
EXPECT_UIA_MOVE_ENDPOINT_BY_UNIT(text_range, TextPatternRangeEndpoint_End,
TextUnit_Paragraph,
/*count*/ 1,
/*expected_text*/ L"Text1 Text2 Text3\n",
/*expected_count*/ 1);
base::win::ScopedSafearray children;
std::vector<ComPtr<IRawElementProviderSimple>> expected_values = {};
EXPECT_HRESULT_SUCCEEDED(text_range->GetChildren(children.Receive()));
EXPECT_UIA_SAFEARRAY_EQ(children.Get(), expected_values);
// 2. Validate that both the link and image objects are returned when the
// range spans the document.
EXPECT_UIA_MOVE_ENDPOINT_BY_UNIT(
text_range, TextPatternRangeEndpoint_End, TextUnit_Document,
/*count*/ 1,
/*expected_text*/
L"Text1 Text2 Text3\nBefore link\nLink text 1 Link text 2 Link text 3 "
L"Link text 4\nAfter link\nBefore img\n\xFFFC\nAfter img",
/*expected_count*/ 1);
EXPECT_HRESULT_SUCCEEDED(text_range->GetChildren(children.Receive()));
expected_values = {link_raw, image_raw};
EXPECT_UIA_SAFEARRAY_EQ(children.Get(), expected_values);
// 3. Validate that no object is returned when the range is inside the textual
// content of an embedded object.
GetTextRangeProviderFromTextNode(*link_text2_node, &text_range);
ASSERT_NE(nullptr, text_range.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range, L"Link text 2");
EXPECT_UIA_MOVE_ENDPOINT_BY_UNIT(text_range, TextPatternRangeEndpoint_End,
TextUnit_Character,
/*count*/ 12,
/*expected_text*/ L"Link text 2 Link text 3",
/*expected_count*/ 12);
EXPECT_HRESULT_SUCCEEDED(text_range->GetChildren(children.Receive()));
expected_values = {};
EXPECT_UIA_SAFEARRAY_EQ(children.Get(), expected_values);
// 4. Validate that the link object is returned when the text range contains
// a link object.
GetTextRangeProviderFromTextNode(*before_link_text_node, &text_range);
ASSERT_NE(nullptr, text_range.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range, L"Before link");
EXPECT_UIA_MOVE_ENDPOINT_BY_UNIT(text_range, TextPatternRangeEndpoint_End,
TextUnit_Paragraph,
/*count*/ 2,
/*expected_text*/
L"Before link\nLink text 1 Link text 2 Link "
L"text 3 Link text 4\nAfter link\n",
/*expected_count*/ 2);
EXPECT_HRESULT_SUCCEEDED(text_range->GetChildren(children.Receive()));
expected_values = {link_raw};
EXPECT_UIA_SAFEARRAY_EQ(children.Get(), expected_values);
// 5. Validate that the link object is included even if it is partially
// included in the range.
GetTextRangeProviderFromTextNode(*link_text2_node, &text_range);
ASSERT_NE(nullptr, text_range.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range, L"Link text 2");
EXPECT_UIA_MOVE_ENDPOINT_BY_UNIT(
text_range, TextPatternRangeEndpoint_End, TextUnit_Paragraph,
/*count*/ 2,
/*expected_text*/ L"Link text 2 Link text 3 Link text 4\nAfter link\n",
/*expected_count*/ 2);
EXPECT_HRESULT_SUCCEEDED(text_range->GetChildren(children.Receive()));
expected_values = {link_raw};
EXPECT_UIA_SAFEARRAY_EQ(children.Get(), expected_values);
}
IN_PROC_BROWSER_TEST_F(AXPlatformNodeTextRangeProviderWinBrowserTest,
GetAttributeValue) {
LoadInitialAccessibilityTreeFromHtml(R"HTML(
<!DOCTYPE html>
<html>
<body>
<div style="font-size: 16pt">
<span style="font-size: 12pt">Text1</span>
Text2
</div>
</body>
</html>
)HTML");
ComPtr<IUnknown> mix_attribute_value;
EXPECT_HRESULT_SUCCEEDED(
UiaGetReservedMixedAttributeValue(&mix_attribute_value));
BrowserAccessibility* node = FindNode(ax::mojom::Role::kStaticText, "Text1");
ASSERT_NE(nullptr, node);
EXPECT_TRUE(node->IsLeaf());
EXPECT_EQ(0u, node->PlatformChildCount());
ComPtr<ITextRangeProvider> text_range_provider;
GetTextRangeProviderFromTextNode(*node, &text_range_provider);
ASSERT_NE(nullptr, text_range_provider.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider, L"Text1");
base::win::ScopedVariant value;
EXPECT_HRESULT_SUCCEEDED(text_range_provider->GetAttributeValue(
UIA_FontSizeAttributeId, value.Receive()));
EXPECT_EQ(value.type(), VT_R8);
EXPECT_EQ(V_R8(value.ptr()), 12.0);
EXPECT_HRESULT_SUCCEEDED(
text_range_provider->ExpandToEnclosingUnit(TextUnit_Paragraph));
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider, L"Text1 Text2");
EXPECT_HRESULT_SUCCEEDED(text_range_provider->GetAttributeValue(
UIA_FontSizeAttributeId, value.Receive()));
EXPECT_EQ(value.type(), VT_UNKNOWN);
EXPECT_EQ(V_UNKNOWN(value.ptr()), mix_attribute_value.Get())
<< "expected 'mixed attribute value' interface pointer";
}
// An empty atomic text field, such as an empty <input type="text">, should
// expose an embedded object replacement character in its text representation.
IN_PROC_BROWSER_TEST_F(AXPlatformNodeTextRangeProviderWinBrowserTest,
GetAttributeValueInReadonlyEmptyAtomicTextField) {
LoadInitialAccessibilityTreeFromHtml(R"HTML(
<!DOCTYPE html>
<html>
<body>
<input readonly type="text" aria-label="input_text">
<input type="search" aria-label="input_search">
</body>
</html>
)HTML");
BrowserAccessibility* input_text_node =
FindNode(ax::mojom::Role::kTextField, "input_text");
ASSERT_NE(nullptr, input_text_node);
EXPECT_TRUE(input_text_node->IsLeaf());
EXPECT_EQ(0u, input_text_node->PlatformChildCount());
ComPtr<ITextRangeProvider> text_range_provider;
GetTextRangeProviderFromTextNode(*input_text_node, &text_range_provider);
ASSERT_NE(nullptr, text_range_provider.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider,
kEmbeddedCharacterAsString.c_str());
base::win::ScopedVariant value;
EXPECT_HRESULT_SUCCEEDED(text_range_provider->GetAttributeValue(
UIA_IsReadOnlyAttributeId, value.Receive()));
EXPECT_EQ(value.type(), VT_BOOL);
EXPECT_EQ(V_BOOL(value.ptr()), VARIANT_TRUE);
text_range_provider.Reset();
value.Reset();
BrowserAccessibility* input_search_node =
FindNode(ax::mojom::Role::kSearchBox, "input_search");
ASSERT_NE(nullptr, input_search_node);
EXPECT_TRUE(input_search_node->IsLeaf());
EXPECT_EQ(0u, input_search_node->PlatformChildCount());
GetTextRangeProviderFromTextNode(*input_search_node, &text_range_provider);
ASSERT_NE(nullptr, text_range_provider.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider,
kEmbeddedCharacterAsString.c_str());
EXPECT_HRESULT_SUCCEEDED(text_range_provider->GetAttributeValue(
UIA_IsReadOnlyAttributeId, value.Receive()));
EXPECT_EQ(value.type(), VT_BOOL);
EXPECT_EQ(V_BOOL(value.ptr()), VARIANT_FALSE);
text_range_provider.Reset();
value.Reset();
}
IN_PROC_BROWSER_TEST_F(AXPlatformNodeTextRangeProviderWinBrowserTest,
GetAttributeValueInReadonlyAtomicTextField) {
LoadInitialAccessibilityTreeFromHtml(R"HTML(
<!DOCTYPE html>
<html>
<body>
<input type="text" aria-label="input_text" value="text">
<input readonly type="search" aria-label="input_search"
value="search">
</body>
</html>
)HTML");
BrowserAccessibility* input_text_node =
FindNode(ax::mojom::Role::kTextField, "input_text");
ASSERT_NE(nullptr, input_text_node);
EXPECT_TRUE(input_text_node->IsLeaf());
EXPECT_EQ(0u, input_text_node->PlatformChildCount());
ComPtr<ITextRangeProvider> text_range_provider;
GetTextRangeProviderFromTextNode(*input_text_node, &text_range_provider);
ASSERT_NE(nullptr, text_range_provider.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider, L"text");
base::win::ScopedVariant value;
EXPECT_HRESULT_SUCCEEDED(text_range_provider->GetAttributeValue(
UIA_IsReadOnlyAttributeId, value.Receive()));
EXPECT_EQ(value.type(), VT_BOOL);
EXPECT_EQ(V_BOOL(value.ptr()), VARIANT_FALSE);
text_range_provider.Reset();
value.Reset();
BrowserAccessibility* input_search_node =
FindNode(ax::mojom::Role::kSearchBox, "input_search");
ASSERT_NE(nullptr, input_search_node);
EXPECT_TRUE(input_search_node->IsLeaf());
EXPECT_EQ(0u, input_search_node->PlatformChildCount());
GetTextRangeProviderFromTextNode(*input_search_node, &text_range_provider);
ASSERT_NE(nullptr, text_range_provider.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider, L"search");
EXPECT_HRESULT_SUCCEEDED(text_range_provider->GetAttributeValue(
UIA_IsReadOnlyAttributeId, value.Receive()));
EXPECT_EQ(value.type(), VT_BOOL);
EXPECT_EQ(V_BOOL(value.ptr()), VARIANT_TRUE);
text_range_provider.Reset();
value.Reset();
}
// With a non-atomic text field, the read-only attribute should be determined
// based on the content editable root node's editable state.
IN_PROC_BROWSER_TEST_F(AXPlatformNodeTextRangeProviderWinBrowserTest,
GetAttributeValueInReadonlyNonAtomicTextField) {
LoadInitialAccessibilityTreeFromHtml(R"HTML(
<!DOCTYPE html>
<html>
<style>
.non-atomic-text-field::before {
content: attr(data-placeholder);
pointer-events: none;
}
</style>
<body>
<div contenteditable="true" data-placeholder="@mention or comment"
role="textbox" aria-readonly="false" aria-label="text_field_1"
class="non-atomic-text-field">
<p>value1</p>
</div>
<div contenteditable="true" data-placeholder="@mention or comment"
role="textbox" aria-readonly="true" aria-label="text_field_2"
class="non-atomic-text-field">
<p>value2</p>
</div>
</body>
</html>
)HTML");
BrowserAccessibility* text_field_node_1 =
FindNode(ax::mojom::Role::kTextField, "text_field_1");
ASSERT_NE(nullptr, text_field_node_1);
BrowserAccessibility* text_field_node_2 =
FindNode(ax::mojom::Role::kTextField, "text_field_2");
ASSERT_NE(nullptr, text_field_node_2);
ComPtr<ITextRangeProvider> text_range_provider;
GetTextRangeProviderFromTextNode(*text_field_node_1, &text_range_provider);
ASSERT_NE(nullptr, text_range_provider.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider, L"@mention or comment\nvalue1");
base::win::ScopedVariant value;
EXPECT_HRESULT_SUCCEEDED(text_range_provider->GetAttributeValue(
UIA_IsReadOnlyAttributeId, value.Receive()));
EXPECT_EQ(value.type(), VT_BOOL);
EXPECT_EQ(V_BOOL(value.ptr()), VARIANT_FALSE);
text_range_provider.Reset();
value.Reset();
GetTextRangeProviderFromTextNode(*text_field_node_2, &text_range_provider);
ASSERT_NE(nullptr, text_range_provider.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider, L"@mention or comment\nvalue2");
EXPECT_HRESULT_SUCCEEDED(text_range_provider->GetAttributeValue(
UIA_IsReadOnlyAttributeId, value.Receive()));
EXPECT_EQ(value.type(), VT_BOOL);
EXPECT_EQ(V_BOOL(value.ptr()), VARIANT_TRUE);
text_range_provider.Reset();
value.Reset();
}
IN_PROC_BROWSER_TEST_F(AXPlatformNodeTextRangeProviderWinBrowserTest,
DoNotNormalizeRangeWithVisibleCaretOrSelection) {
LoadInitialAccessibilityTreeFromHtml(std::string(R"HTML(
<!DOCTYPE html>
<html>
<body>
<div aria-value="wrapper">
<input type="text" aria-label="input_text"><span
style="font-size: 12pt">Text1</span>
</div>
<div contenteditable="true">
<ul><li>item</li></ul>3.14
</div>
</body>
</html>
)HTML"));
// Case 1: Inside of an atomic text field, NormalizeTextRange shouldn't modify
// the text range endpoints. An atomic text field does not expose its internal
// implementation to assistive software, appearing as a single leaf node in
// the accessibility tree. It includes <input>, <textarea> and Views-based
// text fields.
//
// In order for the test harness to effectively simulate typing in a text
// input, first change the value of the text input and then focus it. Only
// editing the value won't show the cursor and only focusing will put the
// cursor at the beginning of the text input, so both steps are necessary.
BrowserAccessibility* input_text_node =
FindNode(ax::mojom::Role::kTextField, "input_text");
ASSERT_NE(nullptr, input_text_node);
EXPECT_TRUE(input_text_node->IsLeaf());
EXPECT_EQ(0u, input_text_node->PlatformChildCount());
AccessibilityNotificationWaiter edit_waiter(shell()->web_contents(),
ui::kAXModeComplete,
ax::mojom::Event::kValueChanged);
ui::AXActionData edit_data;
edit_data.target_node_id = input_text_node->GetId();
edit_data.action = ax::mojom::Action::kSetValue;
edit_data.value = "test";
input_text_node->AccessibilityPerformAction(edit_data);
edit_waiter.WaitForNotification();
AccessibilityNotificationWaiter focus_waiter(
shell()->web_contents(), ui::kAXModeComplete, ax::mojom::Event::kFocus);
ui::AXActionData focus_data;
focus_data.target_node_id = input_text_node->GetId();
focus_data.action = ax::mojom::Action::kFocus;
input_text_node->AccessibilityPerformAction(focus_data);
focus_waiter.WaitForNotification();
ComPtr<ITextRangeProvider> text_range_provider;
GetTextRangeProviderFromTextNode(*input_text_node, &text_range_provider);
ASSERT_NE(nullptr, text_range_provider.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider, L"test");
// Move the first position so that both endpoints are at the end of the text
// input. This is where calls to NormalizeTextRange can be problematic.
EXPECT_UIA_MOVE_ENDPOINT_BY_UNIT(
text_range_provider, TextPatternRangeEndpoint_Start, TextUnit_Character,
/*count*/ 4,
/*expected_text*/ L"",
/*expected_count*/ 4);
// Clone the original text range so we can keep track if NormalizeTextRange
// causes a change in position.
ComPtr<ITextRangeProvider> text_range_provider_clone;
text_range_provider->Clone(&text_range_provider_clone);
// Since both ranges are identical, the result of CompareEndpoints should be
// 0.
int result = 0;
EXPECT_HRESULT_SUCCEEDED(text_range_provider->CompareEndpoints(
TextPatternRangeEndpoint_End, text_range_provider_clone.Get(),
TextPatternRangeEndpoint_Start, &result));
ASSERT_EQ(0, result);
// Calling GetAttributeValue will call NormalizeTextRange, which shouldn't
// change the result of CompareEndpoints below since the range is inside an
// atomic text field.
base::win::ScopedVariant value;
EXPECT_HRESULT_SUCCEEDED(text_range_provider->GetAttributeValue(
UIA_IsReadOnlyAttributeId, value.Receive()));
EXPECT_EQ(value.type(), VT_BOOL);
EXPECT_EQ(V_BOOL(value.ptr()), VARIANT_FALSE);
value.Reset();
EXPECT_HRESULT_SUCCEEDED(text_range_provider->CompareEndpoints(
TextPatternRangeEndpoint_End, text_range_provider_clone.Get(),
TextPatternRangeEndpoint_Start, &result));
ASSERT_EQ(0, result);
// Case 2: Inside of a rich text field, NormalizeTextRange should modify the
// text range endpoints.
BrowserAccessibility* node = FindNode(ax::mojom::Role::kStaticText, "item");
ASSERT_NE(nullptr, node);
EXPECT_TRUE(node->IsLeaf());
EXPECT_EQ(0u, node->PlatformChildCount());
GetTextRangeProviderFromTextNode(*node, &text_range_provider);
ASSERT_NE(nullptr, text_range_provider.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider, L"item");
EXPECT_UIA_MOVE_ENDPOINT_BY_UNIT(
text_range_provider, TextPatternRangeEndpoint_Start, TextUnit_Character,
/*count*/ 4,
/*expected_text*/ L"",
/*expected_count*/ 4);
// Make the range degenerate.
EXPECT_UIA_MOVE_ENDPOINT_BY_UNIT(
text_range_provider, TextPatternRangeEndpoint_End, TextUnit_Character,
/*count*/ 1,
/*expected_text*/ L"\n3",
/*expected_count*/ 1);
// The range should now span two nodes: start: "item<>", end: "<3>.14".
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider, L"\n3");
// Clone the original text range so we can keep track if NormalizeTextRange
// causes a change in position.
text_range_provider->Clone(&text_range_provider_clone);
// Calling GetAttributeValue will call NormalizeTextRange, which should
// change the result of CompareEndpoints below since we are in a rich text
// field.
EXPECT_HRESULT_SUCCEEDED(text_range_provider->GetAttributeValue(
UIA_IsReadOnlyAttributeId, value.Receive()));
EXPECT_EQ(value.type(), VT_BOOL);
EXPECT_EQ(V_BOOL(value.ptr()), VARIANT_FALSE);
value.Reset();
// Since text_range_provider has been modified by NormalizeTextRange, we
// expect a difference here.
EXPECT_HRESULT_SUCCEEDED(text_range_provider->CompareEndpoints(
TextPatternRangeEndpoint_End, text_range_provider_clone.Get(),
TextPatternRangeEndpoint_Start, &result));
ASSERT_EQ(1, result);
}
IN_PROC_BROWSER_TEST_F(AXPlatformNodeTextRangeProviderWinBrowserTest,
TextInputWithNewline) {
LoadInitialAccessibilityTreeFromHtml(R"HTML(
<!DOCTYPE html>
<html>
<body>
<div aria-value='wrapper'>
<input type='text' aria-label='input_text'><br>
</div>
</body>
</html>
)HTML");
// This test validates an important scenario for editing. UIA clients such as
// Narrator expect newlines to be contained within their adjacent nodes.
// This test validates this scenario for GetEnclosingElement and
// GetAttributeValue, both of which are essential for text editing scenarios.
//
// In order for the test harness to effectively simulate typing in a text
// input, first change the value of the text input and then focus it. Only
// editing the value won't show the cursor and only focusing will put the
// cursor at the beginning of the text input, so both steps are necessary.
BrowserAccessibility* input_text_node =
FindNode(ax::mojom::Role::kTextField, "input_text");
ASSERT_NE(nullptr, input_text_node);
EXPECT_TRUE(input_text_node->IsLeaf());
EXPECT_EQ(0u, input_text_node->PlatformChildCount());
AccessibilityNotificationWaiter edit_waiter(shell()->web_contents(),
ui::kAXModeComplete,
ax::mojom::Event::kValueChanged);
ui::AXActionData edit_data;
edit_data.target_node_id = input_text_node->GetId();
edit_data.action = ax::mojom::Action::kSetValue;
edit_data.value = "test";
input_text_node->AccessibilityPerformAction(edit_data);
edit_waiter.WaitForNotification();
AccessibilityNotificationWaiter focus_waiter(
shell()->web_contents(), ui::kAXModeComplete, ax::mojom::Event::kFocus);
ui::AXActionData focus_data;
focus_data.target_node_id = input_text_node->GetId();
focus_data.action = ax::mojom::Action::kFocus;
input_text_node->AccessibilityPerformAction(focus_data);
focus_waiter.WaitForNotification();
ComPtr<ITextRangeProvider> text_range_provider;
GetTextRangeProviderFromTextNode(*input_text_node, &text_range_provider);
ASSERT_NE(nullptr, text_range_provider.Get());
EXPECT_UIA_TEXTRANGE_EQ(text_range_provider, L"test");
// Move the first position so that both endpoints are at the end of the text
// input.
EXPECT_UIA_MOVE_ENDPOINT_BY_UNIT(
text_range_provider, TextPatternRangeEndpoint_Start, TextUnit_Character,
/*count*/ 4,
/*expected_text*/ L"",
/*expected_count*/ 4);
ComPtr<IRawElementProviderSimple> text_input_provider =
QueryInterfaceFromNode<IRawElementProviderSimple>(input_text_node);
// Validate that the enclosing element is the text input node and not the
// parent node that includes the newline.
ComPtr<IRawElementProviderSimple> enclosing_element;
ASSERT_HRESULT_SUCCEEDED(
text_range_provider->GetEnclosingElement(&enclosing_element));
EXPECT_EQ(text_input_provider.Get(), enclosing_element.Get());
// Calling GetAttributeValue on the editable text input should return false,
// verifying that the read-only newline is not interfering.
base::win::ScopedVariant value;