chromium/third_party/blink/renderer/core/editing/selection_adjuster.cc

/*
 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "third_party/blink/renderer/core/editing/selection_adjuster.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/position.h"
#include "third_party/blink/renderer/core/editing/selection_template.h"
#include "third_party/blink/renderer/core/editing/visible_position.h"
#include "third_party/blink/renderer/core/editing/visible_selection.h"
#include "third_party/blink/renderer/core/editing/visible_units.h"
#include "third_party/blink/renderer/core/html/html_body_element.h"
#include "third_party/blink/renderer/core/layout/layout_object.h"

namespace blink {

namespace {

template <typename Strategy>
SelectionTemplate<Strategy> ComputeAdjustedSelection(
    const SelectionTemplate<Strategy> selection,
    const EphemeralRangeTemplate<Strategy>& range) { … }

bool IsEmptyTableCell(const Node* node) { … }

}  // anonymous namespace

class GranularityAdjuster final { … };

PositionInFlatTree ComputeStartRespectingGranularity(
    const PositionInFlatTreeWithAffinity& start,
    TextGranularity granularity) { … }

PositionInFlatTree ComputeEndRespectingGranularity(
    const PositionInFlatTree& start,
    const PositionInFlatTreeWithAffinity& end,
    TextGranularity granularity) { … }

SelectionInDOMTree SelectionAdjuster::AdjustSelectionRespectingGranularity(
    const SelectionInDOMTree& selection,
    TextGranularity granularity,
    const WordInclusion inclusion = WordInclusion::kDefault) { … }

SelectionInFlatTree SelectionAdjuster::AdjustSelectionRespectingGranularity(
    const SelectionInFlatTree& selection,
    TextGranularity granularity,
    const WordInclusion inclusion = WordInclusion::kDefault) { … }

class ShadowBoundaryAdjuster final { … };

SelectionInDOMTree
SelectionAdjuster::AdjustSelectionToAvoidCrossingShadowBoundaries(
    const SelectionInDOMTree& selection) { … }
SelectionInFlatTree
SelectionAdjuster::AdjustSelectionToAvoidCrossingShadowBoundaries(
    const SelectionInFlatTree& selection) { … }

class EditingBoundaryAdjuster final { … };

template <>
inline bool
EditingBoundaryAdjuster::IsEditingBoundary<EditingInFlatTreeStrategy>(
    const Node& node,
    const Node& previous_node,
    bool is_previous_node_editable) { … }

SelectionInDOMTree
SelectionAdjuster::AdjustSelectionToAvoidCrossingEditingBoundaries(
    const SelectionInDOMTree& selection) { … }
SelectionInFlatTree
SelectionAdjuster::AdjustSelectionToAvoidCrossingEditingBoundaries(
    const SelectionInFlatTree& selection) { … }

class SelectionTypeAdjuster final { … };

SelectionInDOMTree SelectionAdjuster::AdjustSelectionType(
    const SelectionInDOMTree& selection) { … }
SelectionInFlatTree SelectionAdjuster::AdjustSelectionType(
    const SelectionInFlatTree& selection) { … }

}  // namespace blink