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LibGUI: Move the undo stack from GTextEditor to GTextDocument

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Since the same document can be edited by multiple editors, we need to
keep the undo stack with the document for coherency.
This commit is contained in:
Andreas Kling 2019-11-30 13:05:17 +01:00
parent d6426e4af9
commit ee8773c586
4 changed files with 319 additions and 284 deletions
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76
Libraries/LibGUI/GTextEditor.h
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@ -69,8 +69,8 @@ public:
bool has_selection() const { return m_selection.is_valid(); }
String selected_text() const;
void set_selection(const GTextRange&);
bool can_undo() const { return m_undo_stack_index < m_undo_stack.size() && !m_undo_stack.is_empty(); }
bool can_redo() const { return m_undo_stack_index > 0 && m_undo_stack[m_undo_stack_index - 1].m_undo_vector.size() > 0 && !m_undo_stack.is_empty(); }
bool can_undo() const { return document().can_undo(); }
bool can_redo() const { return document().can_redo(); }
String text() const;
@ -82,8 +82,8 @@ public:
void do_delete();
void delete_current_line();
void select_all();
void undo();
void redo();
void undo() { document().undo(); }
void redo() { document().redo(); }
Function<void()> on_change;
Function<void()> on_return_pressed;
@ -134,6 +134,7 @@ private:
virtual void document_did_remove_all_lines() override;
virtual void document_did_change() override;
virtual void document_did_set_text() override;
virtual void document_did_set_cursor(const GTextPosition&) override;
void create_actions();
void paint_ruler(Painter&);
@ -145,7 +146,6 @@ private:
Rect cursor_content_rect() const;
Rect content_rect_for_position(const GTextPosition&) const;
void update_cursor();
void update_undo_timer();
const NonnullOwnPtrVector<GTextDocumentLine>& lines() const { return document().lines(); }
NonnullOwnPtrVector<GTextDocumentLine>& lines() { return document().lines(); }
GTextDocumentLine& line(int index) { return document().line(index); }
@ -171,68 +171,6 @@ private:
void move_selected_lines_down();
void sort_selected_lines();
class UndoCommand {
public:
UndoCommand(GTextEditor& text_editor);
virtual ~UndoCommand();
virtual void undo();
virtual void redo();
protected:
GTextEditor& m_text_editor;
};
class InsertCharacterCommand : public UndoCommand {
public:
InsertCharacterCommand(GTextEditor& text_editor, char ch, GTextPosition text_position);
virtual void undo() override;
virtual void redo() override;
private:
char m_character;
GTextPosition m_text_position;
};
class RemoveCharacterCommand : public UndoCommand {
public:
RemoveCharacterCommand(GTextEditor& text_editor, char ch, GTextPosition text_position);
virtual void undo() override;
virtual void redo() override;
private:
char m_character;
GTextPosition m_text_position;
};
class RemoveLineCommand : public UndoCommand {
public:
RemoveLineCommand(GTextEditor& text_editor, String, GTextPosition text_position, bool has_merged_content);
virtual void undo() override;
virtual void redo() override;
private:
String m_line_content;
GTextPosition m_text_position;
bool m_has_merged_content;
};
class CreateLineCommand : public UndoCommand {
public:
CreateLineCommand(GTextEditor& text_editor, Vector<char> line_content, GTextPosition text_position);
virtual void undo() override;
virtual void redo() override;
private:
Vector<char> m_line_content;
GTextPosition m_text_position;
};
struct UndoCommandsContainer {
NonnullOwnPtrVector<UndoCommand> m_undo_vector;
};
void add_to_undo_stack(NonnullOwnPtr<UndoCommand> undo_command);
int visual_line_containing(int line_index, int column) const;
void recompute_visual_lines(int line_index);
@ -260,10 +198,6 @@ private:
RefPtr<GAction> m_delete_action;
CElapsedTimer m_triple_click_timer;
NonnullRefPtrVector<GAction> m_custom_context_menu_actions;
NonnullOwnPtrVector<UndoCommandsContainer> m_undo_stack;
int m_undo_stack_index = 0;
RefPtr<CTimer> m_undo_timer;
int m_last_updated_undo_vector_size = 0;
RefPtr<GTextDocument> m_document;