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https://github.com/RGBCube/serenity
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bd6d0d2295
When using the VimEditingEngine in the TextEditor, vim's mode and the previous key are shown in the editor's statusbar.
123 lines
3.6 KiB
C++
123 lines
3.6 KiB
C++
/*
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* Copyright (c) 2021, 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 <LibGUI/EditingEngine.h>
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namespace GUI {
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enum VimMode {
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Normal,
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Insert,
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Visual
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};
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class VimEditingEngine final : public EditingEngine {
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public:
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VimEditingEngine();
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virtual CursorWidth cursor_width() const override;
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virtual bool on_key(const KeyEvent& event) override;
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class PreviousKey {
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public:
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PreviousKey() = default;
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PreviousKey(const KeyEvent& event)
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: key(event.key())
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, code_point(event.code_point())
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{
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}
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bool operator==(const KeyCode& key) const
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{
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return this->key == key;
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}
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bool operator==(const u32& code_point) const
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{
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return this->code_point == code_point;
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}
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KeyCode key {};
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u32 code_point {};
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};
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Function<void(VimMode)> on_mode_change;
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Function<void(const PreviousKey&, bool has_previous_key)> on_previous_keys_change;
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private:
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enum YankType {
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Line,
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Selection
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};
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VimMode m_vim_mode { VimMode::Normal };
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YankType m_yank_type {};
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String m_yank_buffer {};
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void yank(YankType);
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void yank(TextRange);
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void put(const GUI::KeyEvent&);
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TextPosition m_selection_start_position {};
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void update_selection_on_cursor_move();
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void clear_visual_mode_data();
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// FIXME Support multiple previous keys, this is a temporary measure.
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PreviousKey m_previous_key {};
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bool has_previous_key { false };
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void set_previous_key(PreviousKey event)
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{
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m_previous_key = event;
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has_previous_key = true;
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if (on_previous_keys_change)
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on_previous_keys_change(m_previous_key, has_previous_key);
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}
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void clear_previous_key()
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{
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m_previous_key = {};
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has_previous_key = false;
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if (on_previous_keys_change)
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on_previous_keys_change(m_previous_key, has_previous_key);
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}
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void switch_to_normal_mode();
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void switch_to_insert_mode();
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void switch_to_visual_mode();
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void move_half_page_up(const KeyEvent& event);
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void move_half_page_down(const KeyEvent& event);
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bool on_key_in_insert_mode(const KeyEvent& event);
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bool on_key_in_normal_mode(const KeyEvent& event);
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bool on_key_in_visual_mode(const KeyEvent& event);
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};
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}
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