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      1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "ui/views/controls/scrollbar/scroll_bar.h"
      6 
      7 #include "ui/accessibility/ax_view_state.h"
      8 
      9 namespace views {
     10 
     11 ScrollBar::~ScrollBar() {
     12 }
     13 
     14 void ScrollBar::GetAccessibleState(ui::AXViewState* state) {
     15   state->role = ui::AX_ROLE_SCROLL_BAR;
     16 }
     17 
     18 bool ScrollBar::IsHorizontal() const {
     19   return is_horiz_;
     20 }
     21 
     22 void ScrollBar::Update(int viewport_size, int content_size, int current_pos) {
     23   max_pos_ = std::max(0, content_size - viewport_size);
     24 }
     25 
     26 int ScrollBar::GetMaxPosition() const {
     27   return max_pos_;
     28 }
     29 
     30 int ScrollBar::GetMinPosition() const {
     31   return 0;
     32 }
     33 
     34 int ScrollBar::GetContentOverlapSize() const {
     35   return 0;
     36 }
     37 
     38 void ScrollBar::OnMouseEnteredScrollView(const ui::MouseEvent& event) {
     39 }
     40 
     41 void ScrollBar::OnMouseExitedScrollView(const ui::MouseEvent& event) {
     42 }
     43 
     44 ScrollBar::ScrollBar(bool is_horiz)
     45     : is_horiz_(is_horiz),
     46       controller_(NULL),
     47       max_pos_(0) {
     48 }
     49 
     50 }  // namespace views
     51