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Libraries: Move to Userland/Libraries/
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1857 changed files with 266 additions and 274 deletions
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/*
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* Copyright (c) 2020, the SerenityOS developers.
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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/Function.h>
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#include <AK/HashMap.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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namespace Line {
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class Editor;
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struct Key {
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enum Modifier : int {
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None = 0,
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Alt = 1,
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};
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int modifiers { None };
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unsigned key { 0 };
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Key(unsigned c)
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: modifiers(None)
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, key(c) {};
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Key(unsigned c, int modifiers)
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: modifiers(modifiers)
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, key(c)
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{
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}
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bool operator==(const Key& other) const
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{
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return other.key == key && other.modifiers == modifiers;
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}
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bool operator!=(const Key& other) const
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{
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return !(*this == other);
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}
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};
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struct KeyCallback {
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KeyCallback(Function<bool(Editor&)> cb)
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: callback(move(cb))
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{
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}
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Function<bool(Editor&)> callback;
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};
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class KeyCallbackMachine {
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public:
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void register_key_input_callback(Vector<Key>, Function<bool(Editor&)> callback);
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void key_pressed(Editor&, Key);
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void interrupted(Editor&);
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bool should_process_last_pressed_key() const { return m_should_process_this_key; }
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private:
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HashMap<Vector<Key>, NonnullOwnPtr<KeyCallback>> m_key_callbacks;
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Vector<Vector<Key>> m_current_matching_keys;
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size_t m_sequence_length { 0 };
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bool m_should_process_this_key { true };
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};
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}
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namespace AK {
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template<>
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struct Traits<Line::Key> : public GenericTraits<Line::Key> {
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static constexpr bool is_trivial() { return true; }
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static unsigned hash(Line::Key k) { return pair_int_hash(k.key, k.modifiers); }
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};
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template<>
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struct Traits<Vector<Line::Key>> : public GenericTraits<Vector<Line::Key>> {
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static constexpr bool is_trivial() { return false; }
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static unsigned hash(const Vector<Line::Key>& ks)
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{
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unsigned h = 0;
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for (auto& k : ks)
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h ^= Traits<Line::Key>::hash(k);
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return h;
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}
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};
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}
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