66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
/*
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* \brief GUI element that can be activated on clack
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* \author Norman Feske
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* \date 2018-05-03
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*/
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/*
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* Copyright (C) 2018 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _VIEW__ACTIVATABLE_ITEM_H_
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#define _VIEW__ACTIVATABLE_ITEM_H_
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#include "hoverable_item.h"
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namespace Sculpt { struct Activatable_item; }
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struct Sculpt::Activatable_item : Hoverable_item
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{
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typedef Hoverable_item::Id Id;
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Id _selected { };
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Id _activated { };
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/**
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* Apply click - if item is hovered, the click selects the item but
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* does not activate it yet
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*/
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void propose_activation_on_click()
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{
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_selected = _hovered;
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}
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void confirm_activation_on_clack()
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{
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if (_hovered.valid() && (_hovered == _selected))
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_activated = _selected;
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}
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void reset() { _selected = Id{}, _activated = Id{}; }
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/**
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* Return true if item is currently activated
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*/
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bool activated(Id const &id) const { return id == _activated; }
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/**
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* Generate button attributes depending on the item state
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*/
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void gen_button_attr(Xml_generator &xml, Id const &id) const
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{
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/* hover only as long as the button is not activated */
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if (!_selected.valid() || !_activated.valid())
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Hoverable_item::gen_button_attr(xml, id);
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if (_selected.valid() && _selected == _hovered)
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xml.attribute("selected", "yes");
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}
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};
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#endif /* _VIEW__ACTIVATABLE_ITEM_H_ */
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