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// Copyright 2020 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 "third_party/blink/renderer/modules/accessibility/ax_inline_text_box.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/core/editing/ephemeral_range.h"
#include "third_party/blink/renderer/core/editing/markers/document_marker.h"
#include "third_party/blink/renderer/core/editing/markers/document_marker_controller.h"
#include "third_party/blink/renderer/core/editing/position.h"
#include "third_party/blink/renderer/modules/accessibility/ax_object_cache_impl.h"
#include "third_party/blink/renderer/modules/accessibility/ax_range.h"
#include "third_party/blink/renderer/modules/accessibility/testing/accessibility_test.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
namespace test {
TEST_P(ParameterizedAccessibilityTest, GetWordBoundaries) {
// ☀ is the sun emoji symbol.
// জ is circled digit one.
SetBodyInnerHTML(R"HTML(
<p id="paragraph">
"This, ☀ জ is ... a---+++test."
</p>)HTML");
AXObject* ax_paragraph = GetAXObjectByElementId("paragraph");
ASSERT_NE(nullptr, ax_paragraph);
ASSERT_EQ(ax::mojom::Role::kParagraph, ax_paragraph->RoleValue());
ax_paragraph->LoadInlineTextBoxes();
const AXObject* ax_inline_text_box =
ax_paragraph->DeepestFirstChildIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
VectorOf<int> expected_word_starts{0, 1, 5, 9, 11, 14, 18, 19, 25, 29};
VectorOf<int> expected_word_ends{1, 5, 6, 10, 13, 17, 19, 22, 29, 31};
VectorOf<int> word_starts, word_ends;
ax_inline_text_box->GetWordBoundaries(word_starts, word_ends);
EXPECT_EQ(expected_word_starts, word_starts);
EXPECT_EQ(expected_word_ends, word_ends);
}
TEST_P(ParameterizedAccessibilityTest, GetDocumentMarkers) {
// There should be four inline text boxes in the following paragraph.
SetBodyInnerHTML(R"HTML(
<style>* { font-size: 10px; }</style>
<p id="paragraph" style="width: 10ch;">
Misspelled text with a grammar error.
</p>)HTML");
const Node* text = GetElementById("paragraph")->firstChild();
ASSERT_NE(nullptr, text);
ASSERT_TRUE(text->IsTextNode());
// Mark the part of the paragraph that says "Misspelled text" with a spelling
// marker, and the part that says "a grammar error" with a grammar marker.
//
// Note that the inline text boxes and the markers do not occupy the same text
// range. The ranges simply overlap. Also note that the marker ranges include
// non-collapsed white space found in the DOM.
DocumentMarkerController& marker_controller = GetDocument().Markers();
const EphemeralRange misspelled_range(Position(text, 9), Position(text, 24));
marker_controller.AddSpellingMarker(misspelled_range);
const EphemeralRange grammar_range(Position(text, 30), Position(text, 45));
marker_controller.AddGrammarMarker(grammar_range);
AXObject* ax_paragraph = GetAXObjectByElementId("paragraph");
ASSERT_NE(nullptr, ax_paragraph);
ASSERT_EQ(ax::mojom::Role::kParagraph, ax_paragraph->RoleValue());
ax_paragraph->LoadInlineTextBoxes();
// kStaticText: "Misspelled text with a grammar error.".
const AXObject* ax_text = ax_paragraph->FirstChildIncludingIgnored();
ASSERT_NE(nullptr, ax_text);
ASSERT_EQ(ax::mojom::Role::kStaticText, ax_text->RoleValue());
ASSERT_EQ(4, ax_text->ChildCountIncludingIgnored());
// For each inline text box, angle brackets indicate where the marker starts
// and ends respectively.
// kInlineTextBox: "<Misspelled >".
AXObject* ax_inline_text_box = ax_text->ChildAtIncludingIgnored(0);
ASSERT_NE(nullptr, ax_inline_text_box);
VectorOf<DocumentMarker::MarkerType> marker_types;
VectorOf<AXRange> marker_ranges;
ax_inline_text_box->GetDocumentMarkers(&marker_types, &marker_ranges);
EXPECT_EQ((VectorOf<DocumentMarker::MarkerType>{DocumentMarker::kSpelling}),
marker_types);
EXPECT_EQ(
(VectorOf<AXRange>{AXRange(
AXPosition::CreatePositionInTextObject(*ax_inline_text_box, 0),
AXPosition::CreatePositionInTextObject(*ax_inline_text_box, 11))}),
marker_ranges);
// kInlineTextBox: "<text> with <a >".
ax_inline_text_box = ax_text->ChildAtIncludingIgnored(1);
ASSERT_NE(nullptr, ax_inline_text_box);
marker_types.clear();
marker_ranges.clear();
ax_inline_text_box->GetDocumentMarkers(&marker_types, &marker_ranges);
EXPECT_EQ((VectorOf<DocumentMarker::MarkerType>{DocumentMarker::kSpelling,
DocumentMarker::kGrammar}),
marker_types);
EXPECT_EQ(
(VectorOf<AXRange>{
AXRange(
AXPosition::CreatePositionInTextObject(*ax_inline_text_box, 0),
AXPosition::CreatePositionInTextObject(*ax_inline_text_box, 4)),
AXRange(
AXPosition::CreatePositionInTextObject(*ax_inline_text_box, 10),
AXPosition::CreatePositionInTextObject(*ax_inline_text_box,
12))}),
marker_ranges);
// kInlineTextBox: "<grammar >".
ax_inline_text_box = ax_text->ChildAtIncludingIgnored(2);
ASSERT_NE(nullptr, ax_inline_text_box);
marker_types.clear();
marker_ranges.clear();
ax_inline_text_box->GetDocumentMarkers(&marker_types, &marker_ranges);
EXPECT_EQ((VectorOf<DocumentMarker::MarkerType>{DocumentMarker::kGrammar}),
marker_types);
EXPECT_EQ(
(VectorOf<AXRange>{AXRange(
AXPosition::CreatePositionInTextObject(*ax_inline_text_box, 0),
AXPosition::CreatePositionInTextObject(*ax_inline_text_box, 8))}),
marker_ranges);
// kInlineTextBox: "<error>.".
ax_inline_text_box = ax_text->ChildAtIncludingIgnored(3);
ASSERT_NE(nullptr, ax_inline_text_box);
marker_types.clear();
marker_ranges.clear();
ax_inline_text_box->GetDocumentMarkers(&marker_types, &marker_ranges);
EXPECT_EQ((VectorOf<DocumentMarker::MarkerType>{DocumentMarker::kGrammar}),
marker_types);
EXPECT_EQ(
(VectorOf<AXRange>{AXRange(
AXPosition::CreatePositionInTextObject(*ax_inline_text_box, 0),
AXPosition::CreatePositionInTextObject(*ax_inline_text_box, 5))}),
marker_ranges);
}
TEST_P(ParameterizedAccessibilityTest, TextOffsetInContainerWithASpan) {
// There should be three inline text boxes in the following paragraph. The
// span should reset the text start offset of all of them to 0.
SetBodyInnerHTML(R"HTML(
<style>* { font-size: 10px; }</style>
<p id="paragraph">
Hello <span>world </span>there.
</p>)HTML");
AXObject* ax_paragraph = GetAXObjectByElementId("paragraph");
ASSERT_NE(nullptr, ax_paragraph);
ASSERT_EQ(ax::mojom::Role::kParagraph, ax_paragraph->RoleValue());
ax_paragraph->LoadInlineTextBoxes();
const AXObject* ax_inline_text_box =
ax_paragraph->DeepestFirstChildIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
EXPECT_EQ(0, ax_inline_text_box->TextOffsetInContainer(0));
EXPECT_EQ(1, ax_inline_text_box->TextOffsetInContainer(1));
ax_inline_text_box = ax_inline_text_box->NextInPreOrderIncludingIgnored()
->DeepestFirstChildIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
EXPECT_EQ(0, ax_inline_text_box->TextOffsetInContainer(0));
EXPECT_EQ(2, ax_inline_text_box->TextOffsetInContainer(2));
ax_inline_text_box = ax_inline_text_box->NextInPreOrderIncludingIgnored()
->DeepestFirstChildIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
EXPECT_EQ(0, ax_inline_text_box->TextOffsetInContainer(0));
EXPECT_EQ(3, ax_inline_text_box->TextOffsetInContainer(3));
ASSERT_EQ(nullptr, ax_inline_text_box->NextInPreOrderIncludingIgnored());
}
TEST_P(ParameterizedAccessibilityTest,
TextOffsetInContainerWithMultipleInlineTextBoxes) {
// There should be four inline text boxes in the following paragraph. The span
// should not affect the text start offset of the text outside the span.
SetBodyInnerHTML(R"HTML(
<style>* { font-size: 10px; }</style>
<p id="paragraph" style="width: 5ch;">
<span>Offset</span>Hello world there.
</p>)HTML");
AXObject* ax_paragraph = GetAXObjectByElementId("paragraph");
ASSERT_NE(nullptr, ax_paragraph);
ASSERT_EQ(ax::mojom::Role::kParagraph, ax_paragraph->RoleValue());
ax_paragraph->LoadInlineTextBoxes();
const AXObject* ax_inline_text_box =
ax_paragraph->DeepestFirstChildIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
EXPECT_EQ(0, ax_inline_text_box->TextOffsetInContainer(0));
EXPECT_EQ(1, ax_inline_text_box->TextOffsetInContainer(1));
ax_inline_text_box = ax_inline_text_box->NextInPreOrderIncludingIgnored()
->DeepestFirstChildIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
EXPECT_EQ(0, ax_inline_text_box->TextOffsetInContainer(0));
EXPECT_EQ(1, ax_inline_text_box->TextOffsetInContainer(1));
ax_inline_text_box = ax_inline_text_box->NextSiblingIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
EXPECT_EQ(6, ax_inline_text_box->TextOffsetInContainer(0));
EXPECT_EQ(8, ax_inline_text_box->TextOffsetInContainer(2));
ax_inline_text_box = ax_inline_text_box->NextSiblingIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
EXPECT_EQ(12, ax_inline_text_box->TextOffsetInContainer(0));
EXPECT_EQ(15, ax_inline_text_box->TextOffsetInContainer(3));
ASSERT_EQ(nullptr, ax_inline_text_box->NextInPreOrderIncludingIgnored());
}
TEST_P(ParameterizedAccessibilityTest, TextOffsetInContainerWithLineBreak) {
// There should be three inline text boxes in the following paragraph. The
// line break should reset the text start offset to 0 of both the inline text
// box inside the line break, as well as the text start ofset of the second
// line.
SetBodyInnerHTML(R"HTML(
<style>* { font-size: 10px; }</style>
<p id="paragraph">
Line one.<br>
Line two.
</p>)HTML");
AXObject* ax_paragraph = GetAXObjectByElementId("paragraph");
ASSERT_NE(nullptr, ax_paragraph);
ASSERT_EQ(ax::mojom::Role::kParagraph, ax_paragraph->RoleValue());
ax_paragraph->LoadInlineTextBoxes();
const AXObject* ax_inline_text_box =
ax_paragraph->DeepestFirstChildIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
EXPECT_EQ(0, ax_inline_text_box->TextOffsetInContainer(0));
EXPECT_EQ(1, ax_inline_text_box->TextOffsetInContainer(1));
ax_inline_text_box = ax_inline_text_box->NextInPreOrderIncludingIgnored()
->DeepestFirstChildIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
EXPECT_EQ(0, ax_inline_text_box->TextOffsetInContainer(0));
ax_inline_text_box = ax_inline_text_box->NextInPreOrderIncludingIgnored()
->DeepestFirstChildIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
EXPECT_EQ(0, ax_inline_text_box->TextOffsetInContainer(0));
EXPECT_EQ(2, ax_inline_text_box->TextOffsetInContainer(2));
ASSERT_EQ(nullptr, ax_inline_text_box->NextInPreOrderIncludingIgnored());
}
TEST_P(ParameterizedAccessibilityTest, TextOffsetInContainerWithBreakWord) {
// There should be three inline text boxes in the following paragraph because
// of the narrow width and the long word, coupled with the CSS "break-word"
// property. Each inline text box should have a different offset in container.
LoadAhem();
SetBodyInnerHTML(R"HTML(
<style>* { font: 10px/10px Ahem; }</style>
<p id="paragraph" style="width: 5ch; word-wrap: break-word;">
VeryLongWord
</p>)HTML");
AXObject* ax_paragraph = GetAXObjectByElementId("paragraph");
ASSERT_NE(nullptr, ax_paragraph);
ASSERT_EQ(ax::mojom::Role::kParagraph, ax_paragraph->RoleValue());
ax_paragraph->LoadInlineTextBoxes();
const AXObject* ax_inline_text_box =
ax_paragraph->DeepestFirstChildIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
int text_start_offset = 0;
int text_end_offset = ax_inline_text_box->TextLength();
EXPECT_EQ(text_start_offset, ax_inline_text_box->TextOffsetInContainer(0));
EXPECT_EQ(text_end_offset, ax_inline_text_box->TextOffsetInContainer(
ax_inline_text_box->TextLength()));
ax_inline_text_box = ax_inline_text_box->NextSiblingIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
text_start_offset = text_end_offset;
text_end_offset = text_start_offset + ax_inline_text_box->TextLength();
EXPECT_EQ(text_start_offset, ax_inline_text_box->TextOffsetInContainer(0));
EXPECT_EQ(text_end_offset, ax_inline_text_box->TextOffsetInContainer(
ax_inline_text_box->TextLength()));
ax_inline_text_box = ax_inline_text_box->NextSiblingIncludingIgnored();
ASSERT_NE(nullptr, ax_inline_text_box);
ASSERT_EQ(ax::mojom::Role::kInlineTextBox, ax_inline_text_box->RoleValue());
text_start_offset = text_end_offset;
text_end_offset = text_start_offset + ax_inline_text_box->TextLength();
EXPECT_EQ(text_start_offset, ax_inline_text_box->TextOffsetInContainer(0));
EXPECT_EQ(text_end_offset, ax_inline_text_box->TextOffsetInContainer(
ax_inline_text_box->TextLength()));
ASSERT_EQ(nullptr, ax_inline_text_box->NextSiblingIncludingIgnored());
}
} // namespace test
} // namespace blink
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