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// 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.
#ifndef CHROME_BROWSER_UI_PANELS_DETACHED_PANEL_COLLECTION_H_
#define CHROME_BROWSER_UI_PANELS_DETACHED_PANEL_COLLECTION_H_
#include <list>
#include "base/macros.h"
#include "chrome/browser/ui/panels/panel.h"
#include "chrome/browser/ui/panels/panel_collection.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/rect.h"
class PanelManager;
// This class manages a group of free-floating panels.
class DetachedPanelCollection : public PanelCollection {
public:
typedef std::list<Panel*> Panels;
typedef bool (*PanelsComparer)(Panel* panel1, Panel* panel2);
explicit DetachedPanelCollection(PanelManager* panel_manager);
~DetachedPanelCollection() override;
// PanelCollection OVERRIDES:
void OnDisplayChanged() override;
void RefreshLayout() override;
void AddPanel(Panel* panel, PositioningMask positioning_mask) override;
void RemovePanel(Panel* panel, RemovalReason reason) override;
void CloseAll() override;
void ResizePanelWindow(Panel* panel,
const gfx::Size& preferred_window_size) override;
panel::Resizability GetPanelResizability(const Panel* panel) const override;
void OnPanelResizedByMouse(Panel* panel,
const gfx::Rect& new_bounds) override;
void OnPanelAttentionStateChanged(Panel* panel) override;
void OnPanelTitlebarClicked(Panel* panel,
panel::ClickModifier modifier) override;
void ActivatePanel(Panel* panel) override;
void MinimizePanel(Panel* panel) override;
void RestorePanel(Panel* panel) override;
void OnMinimizeButtonClicked(Panel* panel,
panel::ClickModifier modifier) override;
void OnRestoreButtonClicked(Panel* panel,
panel::ClickModifier modifier) override;
bool CanShowMinimizeButton(const Panel* panel) const override;
bool CanShowRestoreButton(const Panel* panel) const override;
bool IsPanelMinimized(const Panel* panel) const override;
bool UsesAlwaysOnTopPanels() const override;
void SavePanelPlacement(Panel* panel) override;
void RestorePanelToSavedPlacement() override;
void DiscardSavedPanelPlacement() override;
void UpdatePanelOnCollectionChange(Panel* panel) override;
void OnPanelExpansionStateChanged(Panel* panel) override;
void OnPanelActiveStateChanged(Panel* panel) override;
gfx::Rect GetInitialPanelBounds(
const gfx::Rect& requested_bounds) const override;
bool HasPanel(Panel* panel) const;
void SortPanels(PanelsComparer comparer);
int num_panels() const { return panels_.size(); }
const Panels& panels() const { return panels_; }
// Returns default top-left to use for a detached panel whose position is
// not specified during panel creation.
gfx::Point GetDefaultPanelOrigin();
private:
// Offset the default panel top-left position by kPanelTilePixels. Wrap
// around to initial position if position goes beyond display area.
void ComputeNextDefaultPanelOrigin();
struct PanelPlacement {
Panel* panel;
gfx::Point position;
PanelPlacement() : panel(NULL) { }
};
PanelManager* panel_manager_; // Weak, owns us.
// Collection of all panels.
Panels panels_;
// Used to save the placement information for a panel.
PanelPlacement saved_panel_placement_;
// Default top-left position to use for next detached panel if position is
// unspecified by panel creator.
gfx::Point default_panel_origin_;
DISALLOW_COPY_AND_ASSIGN(DetachedPanelCollection);
};
#endif // CHROME_BROWSER_UI_PANELS_DETACHED_PANEL_COLLECTION_H_
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