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62 lines
2.1 KiB
62 lines
2.1 KiB
5 years ago
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#ifndef FOCUSNAVGROUP_H
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#define FOCUSNAVGROUP_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include <vgui/VGUI.h>
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#include <vgui_controls/PHandle.h>
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namespace vgui
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{
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class Panel;
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//-----------------------------------------------------------------------------
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// Purpose: Handles navigation through a set of panels, with tab order & hotkeys
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//-----------------------------------------------------------------------------
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class FocusNavGroup
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{
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public:
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FocusNavGroup(Panel *panel);
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~FocusNavGroup();
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virtual Panel *GetDefaultPanel(); // returns a pointer to the panel with the default focus
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virtual void SetDefaultButton(Panel *panel); // sets which panel should receive input when ENTER is hit
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virtual VPANEL GetDefaultButton(); // panel which receives default input when ENTER is hit, if current focused item cannot accept ENTER
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virtual VPANEL GetCurrentDefaultButton(); // panel which receives input when ENTER is hit
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virtual Panel *FindPanelByHotkey(wchar_t key); // finds the panel which is activated by the specified key
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virtual bool RequestFocusPrev(VPANEL panel = NULL); // if panel is NULL, then the tab increment is based last known panel that had key focus
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virtual bool RequestFocusNext(VPANEL panel = NULL);
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virtual Panel *GetCurrentFocus();
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virtual VPANEL SetCurrentFocus(VPANEL panel, VPANEL defaultPanel); // returns the Default panel
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// sets the panel that owns this FocusNavGroup to be the root in the focus traversal heirarchy
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// focus change via KEY_TAB will only travel to children of this main panel
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virtual void SetFocusTopLevel(bool state);
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virtual void SetCurrentDefaultButton(VPANEL panel, bool sendCurrentDefaultButtonMessage = true);
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private:
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bool CanButtonBeDefault(VPANEL panel);
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VPanelHandle _defaultButton;
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VPanelHandle _currentDefaultButton;
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VPanelHandle _currentFocus;
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Panel *_mainPanel;
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bool _topLevelFocus;
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};
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} // namespace vgui
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#endif // FOCUSNAVGROUP_H
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