xenia/kakoune
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Window lifetime is now handled by it's buffer.

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A window cannot outlive it's buffer, so it makes sense to keep only a
reference on it hand have the buffer manage the window lifetime.
This commit is contained in:
Maxime Coste 2011-09-08 00:13:19 +00:00
parent 535e200587
commit d3499ecd9c
5 changed files with 67 additions and 38 deletions
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20
src/buffer.cc
View File

@ -1,8 +1,10 @@
#include "buffer.hh"
#include "buffer_manager.hh"
#include "window.hh"
#include <cassert>
#include <algorithm>
namespace Kakoune
{
@ -314,4 +316,22 @@ void Buffer::append_modification(Modification&& modification)
m_current_undo_group.push_back(modification);
}
struct window_already_registered {};
void Buffer::register_window(Window* window)
{
if (std::find(m_windows.begin(), m_windows.end(), window) != m_windows.end())
throw window_already_registered();
m_windows.push_front(std::unique_ptr<Window>(window));
}
void Buffer::delete_window(Window* window)
{
assert(&window->buffer() == this);
auto window_it = std::find(m_windows.begin(), m_windows.end(), window);
assert(window_it != m_windows.end());
m_windows.erase(window_it);
}
}

9
src/buffer.hh
View File

@ -3,6 +3,8 @@
#include <string>
#include <vector>
#include <list>
#include <memory>
#include "utils.hh"
@ -10,6 +12,8 @@ namespace Kakoune
{
class Buffer;
class Window;
typedef int BufferPos;
typedef int BufferSize;
typedef char BufferChar;
@ -96,6 +100,9 @@ public:
const BufferString& content() const { return m_content; }
void register_window(Window* window);
void delete_window(Window* window);
private:
BufferChar at(BufferPos position) const;
@ -140,6 +147,8 @@ private:
void revert_modification(const Modification& modification);
void append_modification(Modification&& modification);
std::list<std::unique_ptr<Window>> m_windows;
};
}

14
src/main.cc
View File

@ -152,7 +152,7 @@ void do_insert(Window& window)
print_status("");
}
std::shared_ptr<Window> current_window;
Window* current_window;
void edit(const CommandParameters& params)
{
@ -162,14 +162,14 @@ void edit(const CommandParameters& params)
std::string filename = params[0];
try
{
std::shared_ptr<Buffer> buffer(create_buffer_from_file(filename));
Buffer* buffer = create_buffer_from_file(filename);
if (buffer)
current_window = std::make_shared<Window>(buffer);
current_window = new Window(*buffer);
}
catch (file_not_found& what)
{
print_status("new file " + filename);
current_window = std::make_shared<Window>(std::make_shared<Buffer>(filename));
current_window = new Window(*new Buffer(filename));
}
}
@ -178,7 +178,7 @@ void write_buffer(const CommandParameters& params)
if (params.size() > 1)
throw wrong_argument_count();
Buffer& buffer = *current_window->buffer();
Buffer& buffer = current_window->buffer();
std::string filename = params.empty() ? buffer.name() : params[0];
write_buffer_to_file(buffer, filename);
@ -292,8 +292,8 @@ int main()
try
{
auto buffer = std::make_shared<Buffer>("<scratch>");
current_window = std::make_shared<Window>(buffer);
auto buffer = new Buffer("<scratch>");
current_window = new Window(*buffer);
draw_window(*current_window);
int count = 0;

45
src/window.cc
View File

@ -5,29 +5,30 @@
namespace Kakoune
{
Window::Window(const std::shared_ptr<Buffer> buffer)
Window::Window(Buffer& buffer)
: m_buffer(buffer),
m_position(0, 0),
m_cursor(0, 0),
m_dimensions(0, 0)
{
m_buffer.register_window(this);
}
void Window::erase()
{
m_buffer->begin_undo_group();
m_buffer.begin_undo_group();
if (m_selections.empty())
{
BufferIterator cursor = iterator_at(m_cursor);
m_buffer->erase(cursor, cursor+1);
m_buffer.erase(cursor, cursor+1);
}
for (auto sel = m_selections.begin(); sel != m_selections.end(); ++sel)
{
m_buffer->erase(sel->begin, sel->end);
m_buffer.erase(sel->begin, sel->end);
sel->end = sel->begin;
}
m_buffer->end_undo_group();
m_buffer.end_undo_group();
}
static WindowCoord measure_string(const Window::String& string)
@ -48,25 +49,25 @@ static WindowCoord measure_string(const Window::String& string)
void Window::insert(const String& string)
{
m_buffer->begin_undo_group();
m_buffer.begin_undo_group();
if (m_selections.empty())
{
m_buffer->insert(iterator_at(m_cursor), string);
m_buffer.insert(iterator_at(m_cursor), string);
move_cursor(measure_string(string));
}
for (auto sel = m_selections.begin(); sel != m_selections.end(); ++sel)
{
m_buffer->insert(sel->begin, string);
m_buffer.insert(sel->begin, string);
sel->begin += string.length();
sel->end += string.length();
}
m_buffer->end_undo_group();
m_buffer.end_undo_group();
}
void Window::append(const String& string)
{
m_buffer->begin_undo_group();
m_buffer.begin_undo_group();
if (m_selections.empty())
{
move_cursor(WindowCoord(0 , 1));
@ -75,19 +76,19 @@ void Window::append(const String& string)
for (auto sel = m_selections.begin(); sel != m_selections.end(); ++sel)
{
m_buffer->insert(sel->end, string);
m_buffer.insert(sel->end, string);
}
m_buffer->end_undo_group();
m_buffer.end_undo_group();
}
bool Window::undo()
{
return m_buffer->undo();
return m_buffer.undo();
}
bool Window::redo()
{
return m_buffer->redo();
return m_buffer.redo();
}
BufferCoord Window::window_to_buffer(const WindowCoord& window_pos) const
@ -104,12 +105,12 @@ WindowCoord Window::buffer_to_window(const BufferCoord& buffer_pos) const
BufferIterator Window::iterator_at(const WindowCoord& window_pos) const
{
return m_buffer->iterator_at(window_to_buffer(window_pos));
return m_buffer.iterator_at(window_to_buffer(window_pos));
}
WindowCoord Window::line_and_column_at(const BufferIterator& iterator) const
{
return buffer_to_window(m_buffer->line_and_column_at(iterator));
return buffer_to_window(m_buffer.line_and_column_at(iterator));
}
void Window::empty_selections()
@ -141,7 +142,7 @@ void Window::move_cursor(const WindowCoord& offset)
window_to_buffer(WindowCoord(m_cursor.line + offset.line,
m_cursor.column + offset.column));
m_cursor = buffer_to_window(m_buffer->clamp(target_position));
m_cursor = buffer_to_window(m_buffer.clamp(target_position));
scroll_to_keep_cursor_visible_ifn();
}
@ -154,29 +155,29 @@ void Window::update_display_buffer()
std::sort(sorted_selections.begin(), sorted_selections.end(),
[](const Selection& lhs, const Selection& rhs) { return lhs.begin < rhs.begin; });
BufferIterator current_position = m_buffer->iterator_at(m_position);
BufferIterator current_position = m_buffer.iterator_at(m_position);
for (Selection& sel : sorted_selections)
{
if (current_position != sel.begin)
{
DisplayAtom atom;
atom.content = m_buffer->string(current_position, sel.begin);
atom.content = m_buffer.string(current_position, sel.begin);
m_display_buffer.append(atom);
}
if (sel.begin != sel.end)
{
DisplayAtom atom;
atom.content = m_buffer->string(sel.begin, sel.end);
atom.content = m_buffer.string(sel.begin, sel.end);
atom.attribute = UNDERLINE;
m_display_buffer.append(atom);
}
current_position = sel.end;
}
if (current_position != m_buffer->end())
if (current_position != m_buffer.end())
{
DisplayAtom atom;
atom.content = m_buffer->string(current_position, m_buffer->end());
atom.content = m_buffer.string(current_position, m_buffer.end());
m_display_buffer.append(atom);
}
}

17
src/window.hh
View File

@ -1,7 +1,6 @@
#ifndef window_hh_INCLUDED
#define window_hh_INCLUDED
#include <memory>
#include <functional>
#include "utils.hh"
@ -35,7 +34,7 @@ public:
typedef BufferString String;
typedef std::function<Selection (const BufferIterator&)> Selector;
Window(const std::shared_ptr<Buffer> buffer);
Window(Buffer& buffer);
Window(const Window&) = delete;
void erase();
@ -45,7 +44,7 @@ public:
const BufferCoord& position() const { return m_position; }
const WindowCoord& cursor_position() const { return m_cursor; }
const std::shared_ptr<Buffer>& buffer() const { return m_buffer; }
Buffer& buffer() const { return m_buffer; }
BufferCoord window_to_buffer(const WindowCoord& window_pos) const;
WindowCoord buffer_to_window(const BufferCoord& buffer_pos) const;
@ -72,12 +71,12 @@ public:
private:
void scroll_to_keep_cursor_visible_ifn();
std::shared_ptr<Buffer> m_buffer;
BufferCoord m_position;
WindowCoord m_cursor;
WindowCoord m_dimensions;
SelectionList m_selections;
DisplayBuffer m_display_buffer;
Buffer& m_buffer;
BufferCoord m_position;
WindowCoord m_cursor;
WindowCoord m_dimensions;
SelectionList m_selections;
DisplayBuffer m_display_buffer;
};
}