ui/base/models/table_model.cc

// Copyright (c) 2012 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/base/models/table_model.h"

#include "base/check.h"
#include "base/i18n/string_compare.h"
#include "base/notreached.h"
#include "third_party/icu/source/i18n/unicode/coll.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/models/image_model.h"

namespace ui {

// TableColumn -----------------------------------------------------------------

TableColumn::TableColumn()
    : id(0),
      title(),
      alignment(LEFT),
      width(-1),
      percent(),
      min_visible_width(0),
      sortable(false),
      initial_sort_is_ascending(true) {
}

TableColumn::TableColumn(int id, Alignment alignment, int width, float percent)
    : id(id),
      title(l10n_util::GetStringUTF16(id)),
      alignment(alignment),
      width(width),
      percent(percent),
      min_visible_width(0),
      sortable(false),
      initial_sort_is_ascending(true) {
}

TableColumn::TableColumn(const TableColumn& other) = default;

TableColumn& TableColumn::operator=(const TableColumn& other) = default;

// TableModel -----------------------------------------------------------------

// Used for sorting.
static icu::Collator* g_collator = nullptr;

ui::ImageModel TableModel::GetIcon(int row) {
  return ui::ImageModel();
}

std::u16string TableModel::GetTooltip(int row) {
  return std::u16string();
}

int TableModel::CompareValues(int row1, int row2, int column_id) {
  DCHECK_GE(row1, 0);
  DCHECK_LT(row1, RowCount());
  DCHECK_GE(row2, 0);
  DCHECK_LT(row2, RowCount());

  std::u16string value1 = GetText(row1, column_id);
  std::u16string value2 = GetText(row2, column_id);
  icu::Collator* collator = GetCollator();

  if (collator)
    return base::i18n::CompareString16WithCollator(*collator, value1, value2);

  NOTREACHED();
  return 0;
}

void TableModel::ClearCollator() {
  delete g_collator;
  g_collator = nullptr;
}

TableModel::~TableModel() = default;

icu::Collator* TableModel::GetCollator() {
  if (!g_collator) {
    UErrorCode create_status = U_ZERO_ERROR;
    g_collator = icu::Collator::createInstance(create_status);
    if (!U_SUCCESS(create_status)) {
      g_collator = nullptr;
      NOTREACHED();
    }
  }
  return g_collator;
}

}  // namespace ui