d6dc81874d
This patch moves selection updates outside movement functions in EditingEngine. Previously, movement functions would automatically update the selection based on whether the Shift key was pressed down during movement. However, not all EditingEngine subclasses want that; VimEditingEngine being a good example (because all selection is handled in visual mode). Therefore, this patch moves all selection updating to EditingEngine::on_key(). Subclasses wishing to provide custom movement and selection semantics should override it (and VimEditingEngine already does).
79 lines
1.8 KiB
C++
79 lines
1.8 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Noncopyable.h>
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#include <LibGUI/Event.h>
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#include <LibGUI/TextDocument.h>
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namespace GUI {
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enum CursorWidth {
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NARROW,
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WIDE
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};
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class EditingEngine {
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AK_MAKE_NONCOPYABLE(EditingEngine);
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AK_MAKE_NONMOVABLE(EditingEngine);
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public:
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virtual ~EditingEngine();
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virtual CursorWidth cursor_width() const { return NARROW; }
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void attach(TextEditor& editor);
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void detach();
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TextEditor& editor()
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{
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VERIFY(!m_editor.is_null());
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return *m_editor.unsafe_ptr();
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}
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virtual bool on_key(const KeyEvent& event);
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protected:
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EditingEngine() { }
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WeakPtr<TextEditor> m_editor;
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void move_one_left();
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void move_one_right();
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void move_one_up(const KeyEvent& event);
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void move_one_down(const KeyEvent& event);
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void move_to_previous_span();
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void move_to_next_span(const KeyEvent& event);
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void move_to_line_beginning();
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void move_to_line_end();
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void move_page_up();
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void move_page_down();
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void move_to_first_line();
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void move_to_last_line();
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TextPosition find_beginning_of_next_word();
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void move_to_beginning_of_next_word();
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TextPosition find_end_of_next_word();
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void move_to_end_of_next_word();
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TextPosition find_end_of_previous_word();
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void move_to_end_of_previous_word();
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TextPosition find_beginning_of_previous_word();
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void move_to_beginning_of_previous_word();
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void move_up(double page_height_factor);
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void move_down(double page_height_factor);
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void get_selection_line_boundaries(size_t& first_line, size_t& last_line);
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void delete_line();
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void delete_char();
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private:
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void move_selected_lines_up();
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void move_selected_lines_down();
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};
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}
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