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Merge pull request #588 from Vultraz/gui2_widget_groups
gui2: implement widget groups
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,118 @@ | ||
| /* | ||
| Copyright (C) 2008 - 2016 The Battle for Wesnoth Project http://www.wesnoth.org/ | ||
| This program is free software; you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation; either version 2 of the License, or | ||
| (at your option) any later version. | ||
| This program is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY. | ||
| See the COPYING file for more details. | ||
| */ | ||
|
|
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| #ifndef GUI_WIDGETS_GROUP_HPP_INCLUDED | ||
| #define GUI_WIDGETS_GROUP_HPP_INCLUDED | ||
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| #include "gui/auxiliary/event/dispatcher.hpp" | ||
| #include "gui/widgets/selectable.hpp" | ||
| #include "gui/widgets/widget.hpp" | ||
| #include "utils/foreach.tpp" | ||
|
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| #include <vector> | ||
| #include <boost/bind.hpp> | ||
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| namespace gui2 | ||
| { | ||
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| template <class T> | ||
| class tgroup | ||
| { | ||
| public: | ||
| typedef typename std::vector<std::pair<tselectable_*, T> > group_list; | ||
| typedef typename group_list::iterator group_iterator; | ||
| typedef typename group_list::const_iterator group_iterator_const; | ||
|
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| /** | ||
| * Adds a widget/value pair to the group vector. A callback is set | ||
| * that sets all members' toggle states to false when clicked. This | ||
| * happens before individual widget handlers fire, meaning that the | ||
| * clicked widget will remain the only one selected. | ||
| */ | ||
| void add_member(tselectable_* widget, const T& value) | ||
| { | ||
| members_.push_back(std::make_pair(widget, value)); | ||
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| dynamic_cast<twidget*>(widget)->connect_signal<event::LEFT_BUTTON_CLICK>(boost::bind( | ||
| &tgroup::group_operator, this), event::tdispatcher::front_child); | ||
| } | ||
|
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| /** | ||
| * Removes a member from the group vector. | ||
| * | ||
| * TODO: implement | ||
| void remove_member(tselectable_* widget) | ||
| { | ||
| }*/ | ||
|
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| /** | ||
| * Group member getters | ||
| */ | ||
| std::pair<group_iterator, group_iterator> members() | ||
| { | ||
| return std::make_pair(members_.begin(), members_.end()); | ||
| } | ||
|
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| std::pair<group_iterator_const, group_iterator_const> members() const | ||
| { | ||
| return std::make_pair(members_.begin(), members_.end()); | ||
| } | ||
|
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| /** | ||
| * The default actions to take when clicking on one of the widgets | ||
| * in the group. | ||
| */ | ||
| void group_operator() | ||
| { | ||
| FOREACH(AUTO& member, members()) | ||
| { | ||
| member.first->set_value(false); | ||
| } | ||
| } | ||
|
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| /** | ||
| * Returns the value paired with the currently activiely toggled member | ||
| * of the group. | ||
| */ | ||
| T get_active_member_value() | ||
| { | ||
| FOREACH(AUTO& member, members()) | ||
| { | ||
| if(member.first->get_value_bool()) { | ||
| return member.second; | ||
| } | ||
| } | ||
|
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| return T(); | ||
| } | ||
|
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| /** | ||
| * Sets the toggle values for all widgets besides the one associated | ||
| * with the specified value to false. | ||
| */ | ||
| void set_member_states(const T& value) | ||
| { | ||
| FOREACH(AUTO& member, members()) | ||
| { | ||
| member.first->set_value(member.second == value); | ||
| } | ||
| } | ||
|
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| private: | ||
| group_list members_; | ||
|
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| }; | ||
|
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| } // namespace gui2 | ||
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| #endif |