60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
#ifndef STAR_BUTTON_GROUP_HPP
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#define STAR_BUTTON_GROUP_HPP
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#include "StarWidget.hpp"
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namespace Star {
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STAR_CLASS(ButtonWidget);
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STAR_CLASS(ButtonGroup);
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STAR_CLASS(ButtonGroupWidget);
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// Manages group of buttons in which *at most* a single button can be checked
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// at any time.
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class ButtonGroup {
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public:
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friend class ButtonWidget;
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static int const NoButton = -1;
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// Callback is called when any child buttons checked state is changed, and
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// its parameter is the button being checked.
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void setCallback(WidgetCallbackFunc callback);
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ButtonWidget* button(int id) const;
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List<ButtonWidget*> buttons() const;
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size_t buttonCount() const;
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int addButton(ButtonWidget* button, int id = NoButton);
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void removeButton(ButtonWidget* button);
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int id(ButtonWidget* button) const;
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void select(int id);
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// Will return null if no button is checked.
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ButtonWidget* checkedButton() const;
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// Will return NoButton if no button is checked.
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int checkedId() const;
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// when true it is not required for one of the buttons to be selected
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bool toggle() const;
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void setToggle(bool toggleMode);
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protected:
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// Should be called by child button widgets when they are changed from
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// unchecked to checked.
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void wasChecked(ButtonWidget* self);
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private:
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WidgetCallbackFunc m_callback;
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Map<int, ButtonWidget*> m_buttons;
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Map<ButtonWidget*, int> m_buttonIds;
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bool m_toggle;
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};
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class ButtonGroupWidget : public ButtonGroup, public Widget {};
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}
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#endif
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