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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 "ui/accessibility/platform/ax_event_intent_mac.h"
#include "ui/accessibility/ax_enums.mojom.h"
#include "ui/accessibility/ax_event_intent.h"
namespace ui {
// static
AXTextSelection AXTextSelection::FromDirectionAndGranularity(
ax::mojom::TextBoundary text_boundary,
ax::mojom::MoveDirection move_direction) {
bool has_stayed_within_same_text_unit = false;
AXTextSelectionDirection direction = AXTextSelectionDirection::kDiscontiguous;
AXTextSelectionGranularity granularity = AXTextSelectionGranularity::kUnknown;
switch (text_boundary) {
case ax::mojom::TextBoundary::kNone:
break;
case ax::mojom::TextBoundary::kCharacter:
granularity = AXTextSelectionGranularity::kCharacter;
break;
case ax::mojom::TextBoundary::kFormat:
break; // Not supported on Mac.
case ax::mojom::TextBoundary::kLineEnd:
granularity = AXTextSelectionGranularity::kLine;
break;
case ax::mojom::TextBoundary::kLineStart:
granularity = AXTextSelectionGranularity::kLine;
break;
case ax::mojom::TextBoundary::kLineStartOrEnd:
has_stayed_within_same_text_unit = true;
granularity = AXTextSelectionGranularity::kLine;
break;
case ax::mojom::TextBoundary::kObject:
break;
case ax::mojom::TextBoundary::kPageEnd:
granularity = AXTextSelectionGranularity::kPage;
break;
case ax::mojom::TextBoundary::kPageStart:
granularity = AXTextSelectionGranularity::kPage;
break;
case ax::mojom::TextBoundary::kPageStartOrEnd:
has_stayed_within_same_text_unit = true;
granularity = AXTextSelectionGranularity::kPage;
break;
case ax::mojom::TextBoundary::kParagraphEnd:
granularity = AXTextSelectionGranularity::kParagraph;
break;
case ax::mojom::TextBoundary::kParagraphStart:
granularity = AXTextSelectionGranularity::kParagraph;
break;
case ax::mojom::TextBoundary::kParagraphStartOrEnd:
has_stayed_within_same_text_unit = true;
granularity = AXTextSelectionGranularity::kParagraph;
break;
case ax::mojom::TextBoundary::kSentenceEnd:
granularity = AXTextSelectionGranularity::kSentence;
break;
case ax::mojom::TextBoundary::kSentenceStart:
granularity = AXTextSelectionGranularity::kSentence;
break;
case ax::mojom::TextBoundary::kSentenceStartOrEnd:
has_stayed_within_same_text_unit = true;
granularity = AXTextSelectionGranularity::kSentence;
break;
case ax::mojom::TextBoundary::kWebPage:
has_stayed_within_same_text_unit = true;
granularity = AXTextSelectionGranularity::kDocument;
break;
case ax::mojom::TextBoundary::kWordEnd:
granularity = AXTextSelectionGranularity::kWord;
break;
case ax::mojom::TextBoundary::kWordStart:
granularity = AXTextSelectionGranularity::kWord;
break;
case ax::mojom::TextBoundary::kWordStartOrEnd:
has_stayed_within_same_text_unit = true;
granularity = AXTextSelectionGranularity::kWord;
break;
}
switch (move_direction) {
case ax::mojom::MoveDirection::kNone:
break;
case ax::mojom::MoveDirection::kBackward:
if (has_stayed_within_same_text_unit) {
direction = AXTextSelectionDirection::kBeginning;
} else {
direction = AXTextSelectionDirection::kPrevious;
}
break;
case ax::mojom::MoveDirection::kForward:
if (has_stayed_within_same_text_unit) {
direction = AXTextSelectionDirection::kEnd;
} else {
direction = AXTextSelectionDirection::kNext;
}
break;
}
return AXTextSelection(direction, granularity, /* focus_change */ false);
}
AXTextSelection::AXTextSelection() = default;
AXTextSelection::AXTextSelection(AXTextSelectionDirection direction,
AXTextSelectionGranularity granularity,
bool focus_change)
: direction(direction),
granularity(granularity),
focus_change(focus_change) {}
AXTextSelection::AXTextSelection(const AXTextSelection& selection) = default;
AXTextSelection::~AXTextSelection() = default;
AXTextSelection& AXTextSelection::operator=(const AXTextSelection& selection) =
default;
// static
AXTextStateChangeIntent
AXTextStateChangeIntent::DefaultFocusTextStateChangeIntent() {
return AXTextStateChangeIntent(
AXTextStateChangeType::kSelectionMove,
AXTextSelection(AXTextSelectionDirection::kDiscontiguous,
AXTextSelectionGranularity::kUnknown,
/* focus_change */ true));
}
// static
AXTextStateChangeIntent
AXTextStateChangeIntent::DefaultSelectionChangeIntent() {
return AXTextStateChangeIntent(
AXTextStateChangeType::kSelectionMove,
AXTextSelection(AXTextSelectionDirection::kDiscontiguous,
AXTextSelectionGranularity::kUnknown,
/* focus_change */ false));
}
AXTextStateChangeIntent::AXTextStateChangeIntent() = default;
AXTextStateChangeIntent::AXTextStateChangeIntent(AXTextStateChangeType type,
AXTextSelection selection)
: type(type), selection(selection) {}
AXTextStateChangeIntent::AXTextStateChangeIntent(AXTextEditType edit)
: type(AXTextStateChangeType::kEdit), edit(edit) {}
AXTextStateChangeIntent::AXTextStateChangeIntent(
const AXTextStateChangeIntent& intent) = default;
AXTextStateChangeIntent::~AXTextStateChangeIntent() = default;
AXTextStateChangeIntent& AXTextStateChangeIntent::operator=(
const AXTextStateChangeIntent& intent) = default;
AXTextStateChangeIntent FromEventIntent(const AXEventIntent& event_intent) {
switch (event_intent.command) {
case ax::mojom::Command::kNone:
return AXTextStateChangeIntent(); // An unknown intent.
case ax::mojom::Command::kClearSelection:
return AXTextStateChangeIntent::DefaultSelectionChangeIntent();
case ax::mojom::Command::kDelete:
switch (event_intent.input_event_type) {
case ax::mojom::InputEventType::kDeleteByCut:
case ax::mojom::InputEventType::kDeleteByDrag:
return AXTextStateChangeIntent(AXTextEditType::kCut);
default:
return AXTextStateChangeIntent(AXTextEditType::kDelete);
}
break;
case ax::mojom::Command::kDictate:
return AXTextStateChangeIntent(AXTextEditType::kDictation);
case ax::mojom::Command::kExtendSelection:
return AXTextStateChangeIntent(
AXTextStateChangeType::kSelectionExtend,
AXTextSelection::FromDirectionAndGranularity(
event_intent.text_boundary, event_intent.move_direction));
case ax::mojom::Command::kFormat:
return AXTextStateChangeIntent(AXTextEditType::kAttributesChange);
case ax::mojom::Command::kHistory:
return AXTextStateChangeIntent(); // Not currently implemented on Mac.
case ax::mojom::Command::kInsert:
switch (event_intent.input_event_type) {
case ax::mojom::InputEventType::kInsertText:
case ax::mojom::InputEventType::kInsertLineBreak:
case ax::mojom::InputEventType::kInsertParagraph:
case ax::mojom::InputEventType::kInsertHorizontalRule:
return AXTextStateChangeIntent(AXTextEditType::kTyping);
case ax::mojom::InputEventType::kInsertFromPaste:
case ax::mojom::InputEventType::kInsertFromDrop:
case ax::mojom::InputEventType::kInsertFromYank:
return AXTextStateChangeIntent(AXTextEditType::kPaste);
default:
return AXTextStateChangeIntent(AXTextEditType::kInsert);
}
break;
case ax::mojom::Command::kMarker:
return AXTextStateChangeIntent(); // Not currently implemented on Mac.
case ax::mojom::Command::kMoveSelection:
// Mac calls a "kSelectionBoundary" an operation that moves the caret
// within an editable element by a given text unit, e.g. by word.
return AXTextStateChangeIntent(
AXTextStateChangeType::kSelectionBoundary,
AXTextSelection::FromDirectionAndGranularity(
event_intent.text_boundary, event_intent.move_direction));
case ax::mojom::Command::kSetSelection:
// Mac calls a "kSelectionMove" an operation that sets the selection to a
// completely new location, such as tabbing to an edit field.
if (event_intent.text_boundary == ax::mojom::TextBoundary::kNone) {
// No granularity information is available. This means that focus must
// have moved to another control, or a new selection has been made using
// the mouse or touch in the same control. In the latter case, we'll
// also pretend that focus has changed.
return AXTextStateChangeIntent::DefaultFocusTextStateChangeIntent();
}
return AXTextStateChangeIntent(
AXTextStateChangeType::kSelectionMove,
AXTextSelection::FromDirectionAndGranularity(
event_intent.text_boundary, event_intent.move_direction));
}
}
} // namespace ui