1 // Copyright (c) 2012 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 #ifndef CHROME_BROWSER_UI_PANELS_DETACHED_PANEL_COLLECTION_H_ 6 #define CHROME_BROWSER_UI_PANELS_DETACHED_PANEL_COLLECTION_H_ 7 8 #include <list> 9 #include "base/basictypes.h" 10 #include "chrome/browser/ui/panels/panel.h" 11 #include "chrome/browser/ui/panels/panel_collection.h" 12 #include "ui/gfx/point.h" 13 #include "ui/gfx/rect.h" 14 15 class PanelManager; 16 17 // This class manages a group of free-floating panels. 18 class DetachedPanelCollection : public PanelCollection { 19 public: 20 typedef std::list<Panel*> Panels; 21 typedef bool (*PanelsComparer)(Panel* panel1, Panel* panel2); 22 23 explicit DetachedPanelCollection(PanelManager* panel_manager); 24 virtual ~DetachedPanelCollection(); 25 26 // PanelCollection OVERRIDES: 27 virtual void OnDisplayChanged() OVERRIDE; 28 virtual void RefreshLayout() OVERRIDE; 29 virtual void AddPanel(Panel* panel, 30 PositioningMask positioning_mask) OVERRIDE; 31 virtual void RemovePanel(Panel* panel, RemovalReason reason) OVERRIDE; 32 virtual void CloseAll() OVERRIDE; 33 virtual void ResizePanelWindow( 34 Panel* panel, 35 const gfx::Size& preferred_window_size) OVERRIDE; 36 virtual panel::Resizability GetPanelResizability( 37 const Panel* panel) const OVERRIDE; 38 virtual void OnPanelResizedByMouse(Panel* panel, 39 const gfx::Rect& new_bounds) OVERRIDE; 40 virtual void OnPanelAttentionStateChanged(Panel* panel) OVERRIDE; 41 virtual void OnPanelTitlebarClicked(Panel* panel, 42 panel::ClickModifier modifier) OVERRIDE; 43 virtual void ActivatePanel(Panel* panel) OVERRIDE; 44 virtual void MinimizePanel(Panel* panel) OVERRIDE; 45 virtual void RestorePanel(Panel* panel) OVERRIDE; 46 virtual void OnMinimizeButtonClicked(Panel* panel, 47 panel::ClickModifier modifier) OVERRIDE; 48 virtual void OnRestoreButtonClicked(Panel* panel, 49 panel::ClickModifier modifier) OVERRIDE; 50 virtual bool CanShowMinimizeButton(const Panel* panel) const OVERRIDE; 51 virtual bool CanShowRestoreButton(const Panel* panel) const OVERRIDE; 52 virtual bool IsPanelMinimized(const Panel* panel) const OVERRIDE; 53 virtual bool UsesAlwaysOnTopPanels() const OVERRIDE; 54 virtual void SavePanelPlacement(Panel* panel) OVERRIDE; 55 virtual void RestorePanelToSavedPlacement() OVERRIDE; 56 virtual void DiscardSavedPanelPlacement() OVERRIDE; 57 virtual void UpdatePanelOnCollectionChange(Panel* panel) OVERRIDE; 58 virtual void OnPanelExpansionStateChanged(Panel* panel) OVERRIDE; 59 virtual void OnPanelActiveStateChanged(Panel* panel) OVERRIDE; 60 virtual gfx::Rect GetInitialPanelBounds( 61 const gfx::Rect& requested_bounds) const OVERRIDE; 62 63 bool HasPanel(Panel* panel) const; 64 65 void SortPanels(PanelsComparer comparer); 66 67 int num_panels() const { return panels_.size(); } 68 const Panels& panels() const { return panels_; } 69 70 // Returns default top-left to use for a detached panel whose position is 71 // not specified during panel creation. 72 gfx::Point GetDefaultPanelOrigin(); 73 74 private: 75 // Offset the default panel top-left position by kPanelTilePixels. Wrap 76 // around to initial position if position goes beyond display area. 77 void ComputeNextDefaultPanelOrigin(); 78 79 struct PanelPlacement { 80 Panel* panel; 81 gfx::Point position; 82 83 PanelPlacement() : panel(NULL) { } 84 }; 85 86 PanelManager* panel_manager_; // Weak, owns us. 87 88 // Collection of all panels. 89 Panels panels_; 90 91 // Used to save the placement information for a panel. 92 PanelPlacement saved_panel_placement_; 93 94 // Default top-left position to use for next detached panel if position is 95 // unspecified by panel creator. 96 gfx::Point default_panel_origin_; 97 98 DISALLOW_COPY_AND_ASSIGN(DetachedPanelCollection); 99 }; 100 101 #endif // CHROME_BROWSER_UI_PANELS_DETACHED_PANEL_COLLECTION_H_ 102
