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https://github.com/LadybirdBrowser/ladybird.git
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8146543a43
This moves the calculation of selected words that was originally in the TextEditor application to TextEditor in LibGUI. This allows all applications with text editors to get this number without having to calculating it themselves.
360 lines
13 KiB
C++
360 lines
13 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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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/Function.h>
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#include <AK/NonnullOwnPtrVector.h>
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#include <AK/NonnullRefPtrVector.h>
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#include <LibCore/ElapsedTimer.h>
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#include <LibCore/Timer.h>
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#include <LibGUI/AbstractScrollableWidget.h>
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#include <LibGUI/Forward.h>
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#include <LibGUI/TextDocument.h>
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#include <LibGUI/TextRange.h>
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#include <LibGfx/TextAlignment.h>
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#include <LibSyntax/Forward.h>
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#include <LibSyntax/HighlighterClient.h>
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namespace GUI {
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class TextEditor
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: public AbstractScrollableWidget
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, public TextDocument::Client
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, public Syntax::HighlighterClient {
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C_OBJECT(TextEditor);
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public:
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enum Type {
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MultiLine,
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SingleLine
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};
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enum Mode {
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Editable,
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ReadOnly,
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DisplayOnly
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};
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enum WrappingMode {
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NoWrap,
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WrapAnywhere,
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WrapAtWords
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};
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virtual ~TextEditor() override;
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const TextDocument& document() const { return *m_document; }
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TextDocument& document() { return *m_document; }
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virtual void set_document(TextDocument&);
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const String& placeholder() const { return m_placeholder; }
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void set_placeholder(const StringView& placeholder) { m_placeholder = placeholder; }
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TextDocumentLine& current_line() { return line(m_cursor.line()); }
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const TextDocumentLine& current_line() const { return line(m_cursor.line()); }
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void set_visualize_trailing_whitespace(bool);
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bool visualize_trailing_whitespace() const { return m_visualize_trailing_whitespace; }
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void set_visualize_leading_whitespace(bool);
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bool visualize_leading_whitespace() const { return m_visualize_leading_whitespace; }
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virtual bool is_automatic_indentation_enabled() const final { return m_automatic_indentation_enabled; }
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void set_automatic_indentation_enabled(bool enabled) { m_automatic_indentation_enabled = enabled; }
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virtual int soft_tab_width() const final { return m_soft_tab_width; }
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void set_soft_tab_width(int width) { m_soft_tab_width = width; };
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WrappingMode wrapping_mode() const { return m_wrapping_mode; }
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bool is_wrapping_enabled() const { return m_wrapping_mode != WrappingMode::NoWrap; }
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void set_wrapping_mode(WrappingMode);
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Gfx::TextAlignment text_alignment() const { return m_text_alignment; }
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void set_text_alignment(Gfx::TextAlignment);
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Type type() const { return m_type; }
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bool is_single_line() const { return m_type == SingleLine; }
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bool is_multi_line() const { return m_type == MultiLine; }
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Mode mode() const { return m_mode; }
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bool is_editable() const { return m_mode == Editable; }
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bool is_readonly() const { return m_mode == ReadOnly; }
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bool is_displayonly() const { return m_mode == DisplayOnly; }
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void set_mode(const Mode);
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bool is_ruler_visible() const { return m_ruler_visible; }
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void set_ruler_visible(bool);
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void set_icon(const Gfx::Bitmap*);
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const Gfx::Bitmap* icon() const { return m_icon; }
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Function<void()> on_cursor_change;
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Function<void()> on_selection_change;
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Function<void()> on_focusin;
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Function<void()> on_focusout;
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void set_text(const StringView&);
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void scroll_cursor_into_view();
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void scroll_position_into_view(const TextPosition&);
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size_t line_count() const { return document().line_count(); }
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TextDocumentLine& line(size_t index) { return document().line(index); }
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const TextDocumentLine& line(size_t index) const { return document().line(index); }
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NonnullOwnPtrVector<TextDocumentLine>& lines() { return document().lines(); }
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const NonnullOwnPtrVector<TextDocumentLine>& lines() const { return document().lines(); }
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int line_spacing() const { return m_line_spacing; }
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int line_height() const;
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TextPosition cursor() const { return m_cursor; }
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TextRange normalized_selection() const { return m_selection.normalized(); }
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void insert_at_cursor_or_replace_selection(const StringView&);
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bool write_to_file(const String& path);
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bool has_selection() const { return m_selection.is_valid(); }
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String selected_text() const;
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size_t number_of_selected_words() const;
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void set_selection(const TextRange&);
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void clear_selection();
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bool can_undo() const { return document().can_undo(); }
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bool can_redo() const { return document().can_redo(); }
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String text() const;
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void clear();
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void cut();
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void copy();
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void paste();
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void do_delete();
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void delete_current_line();
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void select_all();
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virtual void undo();
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virtual void redo();
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Function<void()> on_change;
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Function<void(bool modified)> on_modified_change;
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Function<void()> on_mousedown;
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Function<void()> on_return_pressed;
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Function<void()> on_escape_pressed;
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Function<void()> on_up_pressed;
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Function<void()> on_down_pressed;
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Function<void()> on_pageup_pressed;
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Function<void()> on_pagedown_pressed;
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Action& undo_action() { return *m_undo_action; }
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Action& redo_action() { return *m_redo_action; }
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Action& cut_action() { return *m_cut_action; }
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Action& copy_action() { return *m_copy_action; }
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Action& paste_action() { return *m_paste_action; }
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Action& delete_action() { return *m_delete_action; }
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Action& go_to_line_action() { return *m_go_to_line_action; }
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Action& select_all_action() { return *m_select_all_action; }
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void add_custom_context_menu_action(Action&);
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void set_cursor_and_focus_line(size_t line, size_t column);
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void set_cursor(size_t line, size_t column);
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virtual void set_cursor(const TextPosition&);
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const Syntax::Highlighter* syntax_highlighter() const;
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void set_syntax_highlighter(OwnPtr<Syntax::Highlighter>);
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const AutocompleteProvider* autocomplete_provider() const;
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void set_autocomplete_provider(OwnPtr<AutocompleteProvider>&&);
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const EditingEngine* editing_engine() const;
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void set_editing_engine(OwnPtr<EditingEngine>);
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bool should_autocomplete_automatically() const { return m_autocomplete_timer; }
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void set_should_autocomplete_automatically(bool);
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bool is_in_drag_select() const { return m_in_drag_select; }
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TextRange* selection() { return &m_selection; };
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void did_update_selection();
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void did_change();
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void update_cursor();
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void add_code_point(u32 code_point);
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void reset_cursor_blink();
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void update_selection(bool is_selecting);
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int number_of_visible_lines() const;
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Gfx::IntRect cursor_content_rect() const;
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TextPosition text_position_at_content_position(const Gfx::IntPoint&) const;
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void delete_text_range(TextRange);
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protected:
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explicit TextEditor(Type = Type::MultiLine);
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virtual void did_change_font() override;
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virtual void paint_event(PaintEvent&) override;
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virtual void mousedown_event(MouseEvent&) override;
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virtual void mouseup_event(MouseEvent&) override;
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virtual void mousemove_event(MouseEvent&) override;
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virtual void doubleclick_event(MouseEvent&) override;
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virtual void keydown_event(KeyEvent&) override;
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virtual void focusin_event(FocusEvent&) override;
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virtual void focusout_event(FocusEvent&) override;
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virtual void timer_event(Core::TimerEvent&) override;
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virtual void enter_event(Core::Event&) override;
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virtual void leave_event(Core::Event&) override;
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virtual void context_menu_event(ContextMenuEvent&) override;
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virtual void resize_event(ResizeEvent&) override;
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virtual void theme_change_event(ThemeChangeEvent&) override;
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virtual void cursor_did_change() { }
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Gfx::IntRect ruler_content_rect(size_t line) const;
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TextPosition text_position_at(const Gfx::IntPoint&) const;
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bool ruler_visible() const { return m_ruler_visible; }
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Gfx::IntRect content_rect_for_position(const TextPosition&) const;
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int ruler_width() const;
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private:
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friend class TextDocumentLine;
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// ^TextDocument::Client
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virtual void document_did_append_line() override;
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virtual void document_did_insert_line(size_t) override;
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virtual void document_did_remove_line(size_t) override;
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virtual void document_did_remove_all_lines() override;
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virtual void document_did_change() override;
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virtual void document_did_set_text() override;
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virtual void document_did_set_cursor(const TextPosition&) override;
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virtual void document_did_update_undo_stack() override;
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// ^Syntax::HighlighterClient
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virtual Vector<TextDocumentSpan>& spans() final { return document().spans(); }
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virtual const Vector<TextDocumentSpan>& spans() const final { return document().spans(); }
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virtual void highlighter_did_set_spans(Vector<TextDocumentSpan> spans) final { document().set_spans(move(spans)); }
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virtual void set_span_at_index(size_t index, TextDocumentSpan span) final { document().set_span_at_index(index, move(span)); }
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virtual void highlighter_did_request_update() final { update(); }
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virtual String highlighter_did_request_text() const final { return text(); }
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virtual GUI::TextDocument& highlighter_did_request_document() final { return document(); }
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virtual GUI::TextPosition highlighter_did_request_cursor() const final { return m_cursor; }
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void create_actions();
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void paint_ruler(Painter&);
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void update_content_size();
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int fixed_glyph_width() const;
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void defer_reflow();
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void undefer_reflow();
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void try_show_autocomplete();
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int icon_size() const { return 16; }
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int icon_padding() const { return 2; }
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class ReflowDeferrer {
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public:
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ReflowDeferrer(TextEditor& editor)
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: m_editor(editor)
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{
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m_editor.defer_reflow();
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}
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~ReflowDeferrer()
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{
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m_editor.undefer_reflow();
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}
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private:
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TextEditor& m_editor;
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};
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Gfx::IntRect line_content_rect(size_t item_index) const;
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Gfx::IntRect line_widget_rect(size_t line_index) const;
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void delete_selection();
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int content_x_for_position(const TextPosition&) const;
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Gfx::IntRect ruler_rect_in_inner_coordinates() const;
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Gfx::IntRect visible_text_rect_in_inner_coordinates() const;
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void recompute_all_visual_lines();
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void ensure_cursor_is_valid();
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void flush_pending_change_notification_if_needed();
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size_t visual_line_containing(size_t line_index, size_t column) const;
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void recompute_visual_lines(size_t line_index);
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void automatic_selection_scroll_timer_fired();
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template<class T, class... Args>
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inline void execute(Args&&... args)
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{
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auto command = make<T>(*m_document, forward<Args>(args)...);
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command->perform_formatting(*this);
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will_execute(*command);
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command->execute_from(*this);
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m_document->add_to_undo_stack(move(command));
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}
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virtual void will_execute(TextDocumentUndoCommand const&) { }
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Type m_type { MultiLine };
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Mode m_mode { Editable };
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TextPosition m_cursor;
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Gfx::TextAlignment m_text_alignment { Gfx::TextAlignment::CenterLeft };
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bool m_cursor_state { true };
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bool m_in_drag_select { false };
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bool m_ruler_visible { false };
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bool m_has_pending_change_notification { false };
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bool m_automatic_indentation_enabled { false };
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WrappingMode m_wrapping_mode { WrappingMode::NoWrap };
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bool m_visualize_trailing_whitespace { true };
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bool m_visualize_leading_whitespace { false };
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int m_line_spacing { 4 };
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size_t m_soft_tab_width { 4 };
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int m_horizontal_content_padding { 3 };
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TextRange m_selection;
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RefPtr<Menu> m_context_menu;
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RefPtr<Action> m_undo_action;
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RefPtr<Action> m_redo_action;
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RefPtr<Action> m_cut_action;
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RefPtr<Action> m_copy_action;
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RefPtr<Action> m_paste_action;
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RefPtr<Action> m_delete_action;
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RefPtr<Action> m_go_to_line_action;
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RefPtr<Action> m_select_all_action;
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Core::ElapsedTimer m_triple_click_timer;
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NonnullRefPtrVector<Action> m_custom_context_menu_actions;
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size_t m_reflow_deferred { 0 };
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bool m_reflow_requested { false };
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bool is_visual_data_up_to_date() const { return !m_reflow_requested; }
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RefPtr<TextDocument> m_document;
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String m_placeholder { "" };
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template<typename Callback>
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void for_each_visual_line(size_t line_index, Callback) const;
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struct LineVisualData {
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Vector<size_t, 1> visual_line_breaks;
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Gfx::IntRect visual_rect;
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};
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NonnullOwnPtrVector<LineVisualData> m_line_visual_data;
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OwnPtr<Syntax::Highlighter> m_highlighter;
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OwnPtr<AutocompleteProvider> m_autocomplete_provider;
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OwnPtr<AutocompleteBox> m_autocomplete_box;
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bool m_should_keep_autocomplete_box { false };
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size_t m_automatic_autocomplete_delay_ms { 800 };
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RefPtr<Core::Timer> m_automatic_selection_scroll_timer;
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RefPtr<Core::Timer> m_autocomplete_timer;
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OwnPtr<EditingEngine> m_editing_engine;
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Gfx::IntPoint m_last_mousemove_position;
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RefPtr<Gfx::Bitmap> m_icon;
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};
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}
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