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// Copyright (c) 2011 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_UI_PANELS_PANEL_OVERFLOW_STRIP_H_
#define CHROME_BROWSER_UI_PANELS_PANEL_OVERFLOW_STRIP_H_
#pragma once
#include <vector>
#include "chrome/browser/ui/panels/panel.h"
#include "chrome/browser/ui/panels/panel_mouse_watcher_observer.h"
#include "ui/base/animation/animation_delegate.h"
class Browser;
class PanelManager;
namespace ui {
class SlideAnimation;
}
// Manipulates all the panels that are placed on the left-most overflow area.
class PanelOverflowStrip : public PanelMouseWatcherObserver,
public ui::AnimationDelegate {
public:
typedef std::vector<Panel*> Panels;
explicit PanelOverflowStrip(PanelManager* panel_manager);
virtual ~PanelOverflowStrip();
// Sets the display area of the overflow strip.
// |display_area| is in screen coordinates.
void SetDisplayArea(const gfx::Rect& display_area);
// Adds a panel to the strip. |is_new| indicates if the panel is a newly
// created panel or one that is transitioning from another grouping of panels.
void AddPanel(Panel* panel, bool is_new);
// Returns |false| if the panel is not in the strip.
bool Remove(Panel* panel);
void RemoveAll();
// Called when a panel's expansion state changes.
void OnPanelExpansionStateChanged(
Panel* panel, Panel::ExpansionState old_state);
// Refreshes the layouts for all panels to reflect any possible changes.
void Refresh();
void OnFullScreenModeChanged(bool is_full_screen);
int num_panels() const { return static_cast<int>(panels_.size()); }
Panel* first_panel() const {
return panels_.empty() ? NULL : panels_.front();
}
#ifdef UNIT_TEST
const Panels& panels() const { return panels_; }
#endif
private:
// Overridden from PanelMouseWatcherObserver:
virtual void OnMouseMove(const gfx::Point& mouse_position) OVERRIDE;
// Overridden from AnimationDelegate:
virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;
void DoRefresh(size_t start_index, size_t end_index);
// Computes the layout of the |index| panel to fit into the area.
// Empty bounds will be returned if this is not possible due to not enough
// space.
gfx::Rect ComputeLayout(size_t index,
const gfx::Size& iconified_size) const;
// Used to pop up the titles for overflow panels when the mouse hovers over
// the overflow area.
bool ShouldShowOverflowTitles(const gfx::Point& mouse_position) const;
void ShowOverflowTitles(bool show_overflow_titles);
// Weak pointer since PanelManager owns PanelOverflowStrip instance.
PanelManager* panel_manager_;
// The queue for storing all panels.
Panels panels_;
// The overflow area where panels are iconified due to insufficient space
// in the panel strip.
gfx::Rect display_area_;
// For mouse hover-over effect.
bool are_overflow_titles_shown_;
scoped_ptr<ui::SlideAnimation> overflow_hover_animator_;
int overflow_hover_animator_start_width_;
int overflow_hover_animator_end_width_;
// Invalid panel index.
static const size_t kInvalidPanelIndex = static_cast<size_t>(-1);
DISALLOW_COPY_AND_ASSIGN(PanelOverflowStrip);
};
#endif // CHROME_BROWSER_UI_PANELS_PANEL_OVERFLOW_STRIP_H_
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