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// Copyright (c) 2010 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.
#ifndef CHROME_BROWSER_CHROMEOS_PANELS_PANEL_SCROLLER_H_
#define CHROME_BROWSER_CHROMEOS_PANELS_PANEL_SCROLLER_H_
#pragma once
#include <vector>
#include "app/slide_animation.h"
#include "base/basictypes.h"
#include "views/view.h"
class PanelScrollerHeader;
class PanelScroller : public views::View, public AnimationDelegate {
public:
PanelScroller();
~PanelScroller();
static PanelScroller* CreateWindow();
// View overrides.
virtual void ViewHierarchyChanged(bool is_add,
views::View* parent,
views::View* child);
virtual gfx::Size GetPreferredSize();
virtual void Layout();
virtual bool OnMousePressed(const views::MouseEvent& event);
virtual bool OnMouseDragged(const views::MouseEvent& event);
virtual void OnMouseReleased(const views::MouseEvent& event, bool canceled);
// Called when a panel header is clicked with the affected container. This
// function will make sure the panel is fully visible.
void HeaderClicked(PanelScrollerHeader* source);
private:
struct Panel;
// AnimationDelegate overrides.
virtual void AnimationProgressed(const Animation* animation);
// Scrolls to the panel at the given index. It will be moved to the top.
void ScrollToPanel(int index);
// All panels in this scroller.
std::vector<Panel*> panels_;
// Height in pixels of the headers above each panel.
int divider_height_;
bool needs_layout_;
// The current scroll position.
int scroll_pos_;
SlideAnimation animation_;
// When animating a scroll, these indicate the beginning and ending of the
// scroll. The scroll_pos_ always indicates the current one.
int animated_scroll_begin_;
int animated_scroll_end_;
DISALLOW_COPY_AND_ASSIGN(PanelScroller);
};
#endif // CHROME_BROWSER_CHROMEOS_PANELS_PANEL_SCROLLER_H_
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