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122 lines
3.6 KiB
C++
122 lines
3.6 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/Badge.h>
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#include <AK/HashTable.h>
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#include <AK/TemporaryChange.h>
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#include <AK/Vector.h>
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#include <LibGUI/ModelIndex.h>
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#include <AK/Noncopyable.h>
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namespace GUI {
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class ModelSelection {
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AK_MAKE_NONCOPYABLE(ModelSelection);
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AK_MAKE_NONMOVABLE(ModelSelection);
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public:
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ModelSelection(AbstractView& view)
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: m_view(view)
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{
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}
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int size() const { return m_indexes.size(); }
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bool is_empty() const { return m_indexes.is_empty(); }
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bool contains(const ModelIndex& index) const { return m_indexes.contains(index); }
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bool contains_row(int row) const
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{
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for (auto& index : m_indexes) {
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if (index.row() == row)
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return true;
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}
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return false;
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}
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void set(const ModelIndex&);
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void add(const ModelIndex&);
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void toggle(const ModelIndex&);
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bool remove(const ModelIndex&);
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void clear();
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template<typename Callback>
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void for_each_index(Callback callback)
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{
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for (auto& index : indexes())
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callback(index);
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}
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template<typename Callback>
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void for_each_index(Callback callback) const
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{
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for (auto& index : indexes())
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callback(index);
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}
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Vector<ModelIndex> indexes() const
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{
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Vector<ModelIndex> selected_indexes;
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for (auto& index : m_indexes)
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selected_indexes.append(index);
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return selected_indexes;
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}
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// FIXME: This doesn't guarantee that what you get is the lowest or "first" index selected..
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ModelIndex first() const
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{
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if (m_indexes.is_empty())
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return {};
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return *m_indexes.begin();
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}
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void remove_matching(Function<bool(const ModelIndex&)>);
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template<typename Function>
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void change_from_model(Badge<SortingProxyModel>, Function f)
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{
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{
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TemporaryChange change(m_disable_notify, true);
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m_notify_pending = false;
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f(*this);
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}
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if (m_notify_pending)
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notify_selection_changed();
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}
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private:
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void notify_selection_changed();
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AbstractView& m_view;
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HashTable<ModelIndex> m_indexes;
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bool m_disable_notify { false };
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bool m_notify_pending { false };
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};
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}
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