visible_units_word.cc | Explore in Territory

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// Copyright 2017 The Chromium Authors
// 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/core/editing/visible_units.h"

#include "third_party/blink/renderer/core/editing/editing_utilities.h"
#include "third_party/blink/renderer/core/editing/ephemeral_range.h"
#include "third_party/blink/renderer/core/editing/iterators/text_iterator.h"
#include "third_party/blink/renderer/core/editing/text_offset_mapping.h"
#include "third_party/blink/renderer/core/editing/text_segments.h"
#include "third_party/blink/renderer/core/editing/visible_position.h"
#include "third_party/blink/renderer/core/layout/layout_block_flow.h"
#include "third_party/blink/renderer/platform/instrumentation/tracing/trace_event.h"
#include "third_party/blink/renderer/platform/text/character.h"
#include "third_party/blink/renderer/platform/text/text_boundaries.h"
#include "third_party/blink/renderer/platform/text/text_break_iterator.h"

namespace blink {

namespace {

// Helpers used during word movement
static bool IsLineBreak(UChar ch) { … }

PositionInFlatTree EndOfWordPositionInternal(const PositionInFlatTree& position,
                                             WordSide side) { … }

// IMPORTANT: If you update the logic of this algorithm, please also update the
// one in `AbstractInlineTextBox::GetWordBoundariesForText`. The word offsets
// computed over there needs to stay in sync with the ones computed here in
// order for screen readers to announce the right words when using caret
// navigation (ctrl + left/right arrow).
PositionInFlatTree NextWordPositionInternal(
    const PositionInFlatTree& position,
    PlatformWordBehavior platform_word_behavior) { … }

PositionInFlatTree PreviousWordPositionInternal(
    const PositionInFlatTree& position) { … }

PositionInFlatTree StartOfWordPositionInternal(
    const PositionInFlatTree& position,
    WordSide side) { … }
}  // namespace

PositionInFlatTree EndOfWordPosition(const PositionInFlatTree& start,
                                     WordSide side) { … }

Position EndOfWordPosition(const Position& position, WordSide side) { … }

// ----
// TODO(editing-dev): Because of word boundary can not be an upstream position,
// we should make this function to return |PositionInFlatTree|.
PositionInFlatTreeWithAffinity NextWordPosition(
    const PositionInFlatTree& start,
    PlatformWordBehavior platform_word_behavior) { … }

PositionWithAffinity NextWordPosition(
    const Position& start,
    PlatformWordBehavior platform_word_behavior) { … }

PositionInFlatTreeWithAffinity PreviousWordPosition(
    const PositionInFlatTree& start) { … }

PositionWithAffinity PreviousWordPosition(const Position& start) { … }

PositionInFlatTree StartOfWordPosition(const PositionInFlatTree& position,
                                       WordSide side) { … }

Position StartOfWordPosition(const Position& position, WordSide side) { … }

PositionInFlatTree MiddleOfWordPosition(const PositionInFlatTree& word_start,
                                        const PositionInFlatTree& word_end) { … }

Position MiddleOfWordPosition(const Position& word_start,
                              const Position& word_end) { … }

bool IsWordBreak(UChar ch) { … }
}  // namespace blink
chromium/third_party/blink/renderer/core/editing/visible_units_word.cc
