Add some support for marked text

- implement some of usual text-editing related selectors of NSResponder - do not send <S-a> for A - introduce a dispatch queue in XPC which is needed to sync all marked stuff
2024-11-28 02:54:31 +03:00 · 2016-06-27 19:04:27 +02:00 · 2016-06-27 19:04:27 +02:00 · 7358243b07
commit 7358243b07
parent 10ed436bd6
11 changed files with 467 additions and 181 deletions
--- a/NeoVimXpc/NeoVimXpc.h
+++ b/NeoVimXpc/NeoVimXpc.h
@ -15,6 +15,7 @@
 - (void)probe;

 - (void)vimInput:(NSString * _Nonnull)input;
+- (void)vimInputMarkedText:(NSString *_Nonnull)markedText;

 - (void)debugScreenLines;

--- a/NeoVimXpc/NeoVimXpcImpl.h
+++ b/NeoVimXpc/NeoVimXpcImpl.h
@ -15,7 +15,8 @@

 - (void)probe;

- (void)vimInput:(NSString * _Nonnull)input;
+- (void)vimInput:(NSString *_Nonnull)input;
+- (void)vimInputMarkedText:(NSString *_Nonnull)markedText;

 - (void)debugScreenLines;

--- a/NeoVimXpc/NeoVimXpcImpl.m
+++ b/NeoVimXpc/NeoVimXpcImpl.m
@ -20,23 +20,6 @@

 #define pun_type(t, x) (*((t *)(&x)))

-// We declare nvim_main because it's not declared in any header files of neovim
-extern int nvim_main(int argc, char **argv);
-
-// The thread in which neovim's main runs
-static uv_thread_t nvim_thread;
-
-// Condition variable used by the XPC's init to wait till our custom UI initialization is finished inside neovim
-static bool is_ui_launched = false;
-static uv_mutex_t mutex;
-static uv_cond_t condition;
-
-static id <NeoVimUiBridgeProtocol> neo_vim_osx_ui;
-
-static unsigned int default_foreground = qDefaultForeground;
-static unsigned int default_background = qDefaultBackground;
-static unsigned int default_special    = qDefaultSpecial;
-
 typedef struct {
    UIBridgeData *bridge;
    Loop *loop;
@ -48,6 +31,35 @@ typedef struct {
    SignalWatcher cont_handle;
 } XpcUiData;

+// We declare nvim_main because it's not declared in any header files of neovim
+extern int nvim_main(int argc, char **argv);
+
+static unsigned int default_foreground = qDefaultForeground;
+static unsigned int default_background = qDefaultBackground;
+static unsigned int default_special = qDefaultSpecial;
+
+// The thread in which neovim's main runs
+static uv_thread_t _nvim_thread;
+
+// Condition variable used by the XPC's init to wait till our custom UI initialization is finished inside neovim
+static bool _is_ui_launched = false;
+static uv_mutex_t _mutex;
+static uv_cond_t _condition;
+
+static id <NeoVimUiBridgeProtocol> _neo_vim_osx_ui;
+
+static int _row = 0;
+static int _column = 0;
+static int _markedRow = 0;
+static int _markedColumn = 0;
+static NSString *_markedText = nil;
+
+static dispatch_queue_t _queue;
+
+static void xpc_async(void (^block)()) {
+  dispatch_async(_queue, block);
+}
+
 static void sigcont_cb(SignalWatcher *watcher __unused, int signum __unused, void *data) {
  ((XpcUiData *) data)->cont_received = true;
 }
@ -77,10 +89,10 @@ static void osx_xpc_ui_main(UIBridgeData *bridge, UI *ui) {
  data->stop = false;
  CONTINUE(bridge);

-  uv_mutex_lock(&mutex);
-  is_ui_launched = true;
-  uv_cond_signal(&condition);
-  uv_mutex_unlock(&mutex);
+  uv_mutex_lock(&_mutex);
+  _is_ui_launched = true;
+  uv_cond_signal(&_condition);
+  uv_mutex_unlock(&_mutex);

  while (!data->stop) {
    loop_poll_events(&loop, -1);
@ -110,171 +122,231 @@ static void suspend_event(void **argv) {
 }

 static void xpc_ui_resize(UI *ui __unused, int width, int height) {
-  //printf("resize: %d:%d\n", width, height);
-  [neo_vim_osx_ui resizeToWidth:width height:height];
+  xpc_async(^{
+      //printf("resize: %d:%d\n", width, height);
+      [_neo_vim_osx_ui resizeToWidth:width height:height];
+  });
 }

 static void xpc_ui_clear(UI *ui __unused) {
-  //printf("clear\n");
-  [neo_vim_osx_ui clear];
+  xpc_async(^{
+      //printf("clear\n");
+      [_neo_vim_osx_ui clear];
+  });
 }

 static void xpc_ui_eol_clear(UI *ui __unused) {
-  //printf("eol clear\n");
-  [neo_vim_osx_ui eolClear];
+  xpc_async(^{
+      //printf("eol clear\n");
+      [_neo_vim_osx_ui eolClear];
+  });
 }

 static void xpc_ui_cursor_goto(UI *ui __unused, int row, int col) {
-  //printf("cursor goto %d:%d\n", row, col);
-  [neo_vim_osx_ui cursorGotoRow:row column:col];
+  xpc_async(^{
+      //printf("cursor goto %d:%d\n", row, col);
+      _row = row;
+      _column = col;
+
+      [_neo_vim_osx_ui cursorGotoRow:row column:col];
+  });
 }

 static void xpc_ui_update_menu(UI *ui __unused) {
-  //printf("update menu\n");
-  [neo_vim_osx_ui updateMenu];
+  xpc_async(^{
+      //printf("update menu\n");
+      [_neo_vim_osx_ui updateMenu];
+  });
 }

 static void xpc_ui_busy_start(UI *ui __unused) {
-  //printf("busy start\n");
-  [neo_vim_osx_ui busyStart];
+  xpc_async(^{
+      //printf("busy start\n");
+      [_neo_vim_osx_ui busyStart];
+  });
 }

 static void xpc_ui_busy_stop(UI *ui __unused) {
-  //printf("busy stop\n");
-  [neo_vim_osx_ui busyStop];
+  xpc_async(^{
+      //printf("busy stop\n");
+      [_neo_vim_osx_ui busyStop];
+  });
 }

 static void xpc_ui_mouse_on(UI *ui __unused) {
-  //printf("mouse on\n");
-  [neo_vim_osx_ui mouseOn];
+  xpc_async(^{
+      //printf("mouse on\n");
+      [_neo_vim_osx_ui mouseOn];
+  });
 }

 static void xpc_ui_mouse_off(UI *ui __unused) {
-  //printf("mouse off\n");
-  [neo_vim_osx_ui mouseOff];
+  xpc_async(^{
+      //printf("mouse off\n");
+      [_neo_vim_osx_ui mouseOff];
+  });
 }

 static void xpc_ui_mode_change(UI *ui __unused, int mode) {
-  //printf("mode change %04x\n", mode);
-  [neo_vim_osx_ui modeChange:mode];
+  xpc_async(^{
+      //printf("mode change %04x\n", mode);
+      [_neo_vim_osx_ui modeChange:mode];
+  });
 }

 static void xpc_ui_set_scroll_region(UI *ui __unused, int top, int bot, int left, int right) {
-  //printf("set scroll region: %d, %d, %d, %d\n", top, bot, left, right);
-  [neo_vim_osx_ui setScrollRegionToTop:top bottom:bot left:left right:right];
+  xpc_async(^{
+      //printf("set scroll region: %d, %d, %d, %d\n", top, bot, left, right);
+      [_neo_vim_osx_ui setScrollRegionToTop:top bottom:bot left:left right:right];
+  });
 }

 static void xpc_ui_scroll(UI *ui __unused, int count) {
-  //printf("scroll %d\n", count);
-  [neo_vim_osx_ui scroll:count];
+  xpc_async(^{
+      //printf("scroll %d\n", count);
+      [_neo_vim_osx_ui scroll:count];
+  });
 }

 static void xpc_ui_highlight_set(UI *ui __unused, HlAttrs attrs) {
-  //printf("highlight set\n");
-  FontTrait trait = FontTraitNone;
-  if (attrs.italic) {
-    trait |= FontTraitItalic;
-  }
-  if (attrs.bold) {
-    trait |= FontTraitBold;
-  }
-  if (attrs.underline) {
-    trait |= FontTraitUnderline;
-  }
-  if (attrs.undercurl) {
-    trait |= FontTraitUndercurl;
-  }
-  CellAttributes cellAttrs;
-  cellAttrs.fontTrait = trait;
+  xpc_async(^{
+      //printf("highlight set\n");
+      FontTrait trait = FontTraitNone;
+      if (attrs.italic) {
+        trait |= FontTraitItalic;
+      }
+      if (attrs.bold) {
+        trait |= FontTraitBold;
+      }
+      if (attrs.underline) {
+        trait |= FontTraitUnderline;
+      }
+      if (attrs.undercurl) {
+        trait |= FontTraitUndercurl;
+      }
+      CellAttributes cellAttrs;
+      cellAttrs.fontTrait = trait;

-  unsigned int fg = attrs.foreground == -1 ? default_foreground : pun_type(unsigned int, attrs.foreground);
-  unsigned int bg = attrs.background == -1 ? default_background : pun_type(unsigned int, attrs.background);
+      unsigned int fg = attrs.foreground == -1 ? default_foreground : pun_type(unsigned int, attrs.foreground);
+      unsigned int bg = attrs.background == -1 ? default_background : pun_type(unsigned int, attrs.background);

-  cellAttrs.foreground = attrs.reverse ? bg : fg;
-  cellAttrs.background = attrs.reverse ? fg : bg;
-  cellAttrs.special = attrs.special == -1 ? default_special : pun_type(unsigned int, attrs.special);
+      cellAttrs.foreground = attrs.reverse ? bg : fg;
+      cellAttrs.background = attrs.reverse ? fg : bg;
+      cellAttrs.special = attrs.special == -1 ? default_special : pun_type(unsigned int, attrs.special);

-  [neo_vim_osx_ui highlightSet:cellAttrs];
+      [_neo_vim_osx_ui highlightSet:cellAttrs];
+  });
 }

 static void xpc_ui_put(UI *ui __unused, uint8_t *str, size_t len) {
-  NSString *string = [[NSString alloc] initWithBytes:str length:len encoding:NSUTF8StringEncoding];
-  //printf("put: %zu:'%s'\n", len, [string cStringUsingEncoding:NSUTF8StringEncoding]);
-  [neo_vim_osx_ui put:string];
-  [string release];
+  xpc_async(^{
+      NSString *string = [[NSString alloc] initWithBytes:str length:len encoding:NSUTF8StringEncoding];
+//      printf("put: %lu:'%s'\n", len, [string cStringUsingEncoding:NSUTF8StringEncoding]);
+
+      if (_markedText != nil && _markedColumn == _column && _markedRow == _row) {
+        [_neo_vim_osx_ui putMarkedText:string];
+      } else if (_markedText != nil && len == 0 && _markedColumn == _column - 1) {
+        [_neo_vim_osx_ui putMarkedText:string];
+      } else {
+        [_neo_vim_osx_ui put:string];
+      }
+
+      _column += 1;
+      [string release];
+  });
 }

 static void xpc_ui_bell(UI *ui __unused) {
-  //printf("bell\n");
-  [neo_vim_osx_ui bell];
+  xpc_async(^{
+      //printf("bell\n");
+      [_neo_vim_osx_ui bell];
+  });
 }

 static void xpc_ui_visual_bell(UI *ui __unused) {
-  //printf("visual bell\n");
-  [neo_vim_osx_ui visualBell];
+  xpc_async(^{
+      //printf("visual bell\n");
+      [_neo_vim_osx_ui visualBell];
+  });
 }

 static void xpc_ui_flush(UI *ui __unused) {
-  //printf("flush\n");
-  [neo_vim_osx_ui flush];
+  xpc_async(^{
+      //printf("flush\n");
+      [_neo_vim_osx_ui flush];
+  });
 }

 static void xpc_ui_update_fg(UI *ui __unused, int fg) {
+  xpc_async(^{
 //  printf("update fg: %x\n", fg);
-  if (fg != -1) {
-    default_foreground = pun_type(unsigned int, fg);
-  }
-  [neo_vim_osx_ui updateForeground:fg];
+      if (fg != -1) {
+        default_foreground = pun_type(unsigned int, fg);
+      }
+      [_neo_vim_osx_ui updateForeground:fg];
+  });
 }

 static void xpc_ui_update_bg(UI *ui __unused, int bg) {
+  xpc_async(^{
 //  printf("update bg: %x\n", bg);
-  if (bg != -1) {
-    default_background = pun_type(unsigned int, bg);
-  }
-  [neo_vim_osx_ui updateBackground:bg];
+      if (bg != -1) {
+        default_background = pun_type(unsigned int, bg);
+      }
+      [_neo_vim_osx_ui updateBackground:bg];
+  });
 }

 static void xpc_ui_update_sp(UI *ui __unused, int sp) {
+  xpc_async(^{
 //  printf("update sp: %x\n", sp);
-  if (sp != -1) {
-    default_special = pun_type(unsigned int, sp);
-  }
-  [neo_vim_osx_ui updateSpecial:sp];
+      if (sp != -1) {
+        default_special = pun_type(unsigned int, sp);
+      }
+      [_neo_vim_osx_ui updateSpecial:sp];
+  });
 }

 static void xpc_ui_suspend(UI *ui __unused) {
-  //printf("suspend\n");
-  [neo_vim_osx_ui suspend];
+  xpc_async(^{
+      //printf("suspend\n");
+      [_neo_vim_osx_ui suspend];

-  XpcUiData *data = ui->data;
-  // FIXME: dunno whether we need this: copied from tui.c
-  // kill(0, SIGTSTP) won't stop the UI thread, so we must poll for SIGCONT
-  // before continuing. This is done in another callback to avoid
-  // loop_poll_events recursion
-  queue_put_event(data->loop->fast_events, event_create(1, suspend_event, 1, ui));
+      XpcUiData *data = ui->data;
+      // FIXME: dunno whether we need this: copied from tui.c
+      // kill(0, SIGTSTP) won't stop the UI thread, so we must poll for SIGCONT
+      // before continuing. This is done in another callback to avoid
+      // loop_poll_events recursion
+      queue_put_event(data->loop->fast_events, event_create(1, suspend_event, 1, ui));
+  });
 }

 static void xpc_ui_set_title(UI *ui __unused, char *title) {
-  //printf("set title: %s\n", title);
-  NSString *string = [[NSString alloc] initWithCString:title encoding:NSUTF8StringEncoding];
-  [neo_vim_osx_ui setTitle:string];
-  [string release];
+  xpc_async(^{
+      //printf("set title: %s\n", title);
+      NSString *string = [[NSString alloc] initWithCString:title encoding:NSUTF8StringEncoding];
+      [_neo_vim_osx_ui setTitle:string];
+      [string release];
+  });
 }

 static void xpc_ui_set_icon(UI *ui __unused, char *icon) {
-  //printf("set title: %s\n", icon);
-  NSString *string = [[NSString alloc] initWithCString:icon encoding:NSUTF8StringEncoding];
-  [neo_vim_osx_ui setIcon:string];
-  [string release];
+  xpc_async(^{
+      //printf("set title: %s\n", icon);
+      NSString *string = [[NSString alloc] initWithCString:icon encoding:NSUTF8StringEncoding];
+      [_neo_vim_osx_ui setIcon:string];
+      [string release];
+  });
 }

 static void xpc_ui_stop(UI *ui __unused) {
-  //printf("stop\n");
-  [neo_vim_osx_ui stop];
+  xpc_async(^{
+      //printf("stop\n");
+      [_neo_vim_osx_ui stop];

-  XpcUiData *data = (XpcUiData *) ui->data;
-  data->stop = true;
+      XpcUiData *data = (XpcUiData *) ui->data;
+      data->stop = true;
+  });
 }

 static void run_neovim(void *arg __unused) {
@ -318,20 +390,16 @@ void custom_ui_start(void) {
  ui_bridge_attach(ui, osx_xpc_ui_main, osx_xpc_ui_scheduler);
 }

-// We don't wait in this callback because the input events are coming from the XPC's main thread, but we call it the
-// same as in tui.c. This function is called in the main_loop of neovim.
-static void wait_input_enqueue(void **argv) {
+static void neovim_input(void **argv) {
  NSString *input = (NSString *) argv[0];

  // FIXME: check the length of the consumed bytes by neovim and if not fully consumed, call vim_input again.
  vim_input((String) {
-      .data=(char *) input.UTF8String,
-      .size=[input lengthOfBytesUsingEncoding:NSUTF8StringEncoding]
+      .data = (char *) input.UTF8String,
+      .size = [input lengthOfBytesUsingEncoding:NSUTF8StringEncoding]
  });

-  // Release NSString that is retained in -NeoVimXpcImpl.vimInput:. The retain call was in the main thread of the XPC
-  // service.
-  [input release];
+  [input release]; // retain in loop_schedule(&main_loop, ...) (in _queue) somewhere
 }

@implementation NeoVimXpcImpl
@ -342,33 +410,35 @@ static void wait_input_enqueue(void **argv) {
    return nil;
  }

+  _queue = dispatch_queue_create("xpc_callback_queue", DISPATCH_QUEUE_SERIAL);
+
  // set $VIMRUNTIME to ${RESOURCE_PATH_OF_XPC_BUNDLE}/runtime
  NSString *runtimePath = [[NSBundle mainBundle].resourcePath stringByAppendingPathComponent:@"runtime"];
  setenv("VIMRUNTIME", runtimePath.fileSystemRepresentation, true);

-  uv_mutex_init(&mutex);
-  uv_cond_init(&condition);
+  uv_mutex_init(&_mutex);
+  uv_cond_init(&_condition);

-  uv_thread_create(&nvim_thread, run_neovim, NULL);
+  uv_thread_create(&_nvim_thread, run_neovim, NULL);

  // continue only after our UI main code for neovim has been fully initialized
-  uv_mutex_lock(&mutex);
-  while (!is_ui_launched) {
-    uv_cond_wait(&condition, &mutex);
+  uv_mutex_lock(&_mutex);
+  while (!_is_ui_launched) {
+    uv_cond_wait(&_condition, &_mutex);
  }
-  uv_mutex_unlock(&mutex);
+  uv_mutex_unlock(&_mutex);

-  uv_cond_destroy(&condition);
-  uv_mutex_destroy(&mutex);
+  uv_cond_destroy(&_condition);
+  uv_mutex_destroy(&_mutex);

  // casting because [ui retain] returns an NSObject
-  neo_vim_osx_ui = (id <NeoVimUiBridgeProtocol>) [ui retain];
+  _neo_vim_osx_ui = (id <NeoVimUiBridgeProtocol>) [ui retain];

  return self;
 }

 - (void)dealloc {
-  [neo_vim_osx_ui release];
+  [_neo_vim_osx_ui release];
  // FIXME: uv_thread_join(&thread) here after terminating neovim

  [super dealloc];
@ -378,9 +448,57 @@ static void wait_input_enqueue(void **argv) {
  // noop
 }

- (void)vimInput:(NSString *)input {
-  // We retain, but not release here since it will be released in wait_input_enqueue.
-  loop_schedule(&main_loop, event_create(1, wait_input_enqueue, 1, [input retain]));
+- (void)vimInput:(NSString *_Nonnull)input {
+  xpc_async(^{
+      if (_markedText == nil) {
+        loop_schedule(&main_loop, event_create(1, neovim_input, 1, [input retain])); // release in neovim_input
+        return;
+      }
+
+      // Handle cases like ㅎ -> arrow key: The previously marked text is the same as the finalized text which should
+      // inserted. Neovim's drawing code is optimized such that it does not call put in this case again, thus, we
+      // have to manually unmark the cells in the main app.
+      if ([_markedText isEqualToString:input]) {
+        [_neo_vim_osx_ui unmarkRow:_row column:MAX(_column - 1, 0)];
+        if (ScreenLines[_row * screen_Columns + MAX(_column - 1, 0)] == 0x00) {
+          [_neo_vim_osx_ui unmarkRow:_row column:MAX(_column - 2, 0)];
+        }
+      }
+
+      [self deleteMarkedText];
+      loop_schedule(&main_loop, event_create(1, neovim_input, 1, [input retain])); // release in neovim_input
+  });
+}
+
+- (void)vimInputMarkedText:(NSString *_Nonnull)markedText {
+  xpc_async(^{
+      if (_markedText != nil) {
+        [self deleteMarkedText];
+      }
+
+      [self insertMarkedText:markedText];
+  });
+}
+
+- (void)insertMarkedText:(NSString *_Nonnull)markedText {
+  _markedRow = _row;
+  _markedColumn = _column;
+  _markedText = [markedText retain]; // release when the final text is input in -vimInput
+
+  loop_schedule(&main_loop, event_create(1, neovim_input, 1, [_markedText retain])); // release in neovim_input
+}
+
+- (void)deleteMarkedText {
+  NSUInteger length = [_markedText lengthOfBytesUsingEncoding:NSUTF32StringEncoding] / 4;
+
+  [_markedText release];
+  _markedText = nil;
+
+  NSString *backspace = [[NSString alloc] initWithString:@"<BS>"];
+  for (int i = 0; i < length; i++) {
+    loop_schedule(&main_loop, event_create(1, neovim_input, 1, [backspace retain])); // release in neovim_input
+  }
+  [backspace release];
 }

 - (void)debugScreenLines {
--- a/SwiftNeoVim/Grid.swift
+++ b/SwiftNeoVim/Grid.swift
@ -6,8 +6,20 @@
 import Foundation

 struct Cell: CustomStringConvertible {
+  private let attributes: CellAttributes
+
  let string: String
-  let attrs: CellAttributes
+  var marked: Bool
+
+  var attrs: CellAttributes {
+    return self.marked ? self.attributes.reversedColor : self.attributes
+  }
+
+  init(string: String, attrs: CellAttributes, marked: Bool = false) {
+    self.string = string
+    self.attributes = attrs
+    self.marked = marked
+  }
  
  var description: String {
    return self.string.characters.count > 0 ? self.string : "*"
@ -153,7 +165,17 @@ class Grid: CustomStringConvertible {

  func putMarkedText(string: String) {
    // NOTE: Maybe there's a better way to indicate marked text than inverting...
-    self.cells[self.position.row][self.position.column] = Cell(string: string, attrs: self.attrs.reversedColor)
+    self.cells[self.position.row][self.position.column] = Cell(string: string, attrs: self.attrs, marked: true)
+    self.position.column += 1
+  }
+
+  func unmarkCell(position: Position) {
+    print("!!!!! unmarking: \(position)")
+    self.cells[position.row][position.column].marked = false
+  }
+
+  func currentCell() -> Cell {
+    return self.cells[self.position.row][self.position.column]
  }
  
  private func clearRegion(region: Region) {
--- a/SwiftNeoVim/InputTestView.swift
+++ b/SwiftNeoVim/InputTestView.swift
@ -154,7 +154,7 @@ public class InputTestView: NSView, NSTextInputClient {
  /// "Cmd-Ctrl-Return" you'll get the Emoji-popup at the rect by firstRectForCharacterRange(actualRange:) where the
  /// first range is the result of this method.
  public func selectedRange() -> NSRange {
-    let result = NSRange(location: 13, length: 0)
+    let result = NSRange(location: 1, length: 0)
    Swift.print("\(#function): returning \(result)")
    return result
  }
@ -168,7 +168,7 @@ public class InputTestView: NSView, NSTextInputClient {
      return NSRange(location: self.text.characters.count, length: markedText.characters.count)
    }
    
-    return NSRange(location: NSNotFound, length: 0)
+    return NSRange(location: NSNotFound, length: 1)
  }
  
  /* Returns whether or not the receiver has marked text.
@ -183,7 +183,7 @@ public class InputTestView: NSView, NSTextInputClient {
   */
  public func attributedSubstringForProposedRange(aRange: NSRange, actualRange: NSRangePointer) -> NSAttributedString? {
    Swift.print("\(#function): \(aRange), \(actualRange)")
-    return NSAttributedString(string: "t")
+    return NSAttributedString(string: "하")
  }
  
  /* Returns an array of attribute names recognized by the receiver.
--- a/SwiftNeoVim/NeoVimUiBridgeProtocol.h
+++ b/SwiftNeoVim/NeoVimUiBridgeProtocol.h
@ -69,7 +69,10 @@ typedef struct {
 /**
 * Draw string at the current cursor which was set by a previous cursorGotoRow:column callback.
 */
- (void)put:(NSString *)string;
+- (void)put:(NSString *_Nonnull)string;
+
+- (void)putMarkedText:(NSString *_Nonnull)markedText;
+- (void)unmarkRow:(int)row column:(int)column;

 - (void)bell;
 - (void)visualBell;
@ -90,8 +93,8 @@ typedef struct {
 */
 - (void)updateSpecial:(int)sp;
 - (void)suspend;
- (void)setTitle:(NSString *)title;
- (void)setIcon:(NSString *)icon;
+- (void)setTitle:(NSString *_Nonnull)title;
+- (void)setIcon:(NSString *_Nonnull)icon;

 /**
 * NeoVim has been stopped.
--- a/SwiftNeoVim/NeoVimView.swift
+++ b/SwiftNeoVim/NeoVimView.swift
@ -5,6 +5,41 @@

 import Cocoa

+enum Mode {
+  /*
+#define NORMAL          0x01    /* Normal mode, command expected */
+#define VISUAL          0x02    /* Visual mode - use get_real_state() */
+#define OP_PENDING      0x04    /* Normal mode, operator is pending - use
+                                   get_real_state() */
+#define CMDLINE         0x08    /* Editing command line */
+#define INSERT          0x10    /* Insert mode */
+#define LANGMAP         0x20    /* Language mapping, can be combined with
+                                   INSERT and CMDLINE */
+
+#define REPLACE_FLAG    0x40    /* Replace mode flag */
+#define REPLACE         (REPLACE_FLAG + INSERT)
+# define VREPLACE_FLAG  0x80    /* Virtual-replace mode flag */
+# define VREPLACE       (REPLACE_FLAG + VREPLACE_FLAG + INSERT)
+#define LREPLACE        (REPLACE_FLAG + LANGMAP)
+
+#define NORMAL_BUSY     (0x100 + NORMAL) /* Normal mode, busy with a command */
+#define HITRETURN       (0x200 + NORMAL) /* waiting for return or command */
+#define ASKMORE         0x300   /* Asking if you want --more-- */
+#define SETWSIZE        0x400   /* window size has changed */
+#define ABBREV          0x500   /* abbreviation instead of mapping */
+#define EXTERNCMD       0x600   /* executing an external command */
+#define SHOWMATCH       (0x700 + INSERT) /* show matching paren */
+#define CONFIRM         0x800   /* ":confirm" prompt */
+#define SELECTMODE      0x1000  /* Select mode, only for mappings */
+#define TERM_FOCUS      0x2000  // Terminal focus mode
+
+// all mode bits used for mapping
+#define MAP_ALL_MODES   (0x3f | SELECTMODE | TERM_FOCUS)
+
+  */
+
+}
+
 /// Contiguous piece of cells of a row that has the same attributes.
 private struct RowRun: CustomStringConvertible {

@ -76,13 +111,21 @@ public class NeoVimView: NSView {

    let dirtyRects = self.rectsBeingDrawn()

+//    Swift.print(self.grid)
+
    self.rowRunIntersecting(rects: dirtyRects).forEach { rowFrag in
+      self.drawBackground(positions: rowFrag.range.map { self.positionOnView(rowFrag.row, column: $0) },
+                          background: rowFrag.attrs.background)
+
      let positions = rowFrag.range
        // filter out the put(0, 0)s (after a wide character)
        .filter { self.grid.cells[rowFrag.row][$0].string.characters.count > 0 }
        .map { self.positionOnView(rowFrag.row, column: $0) }

-      self.drawBackground(positions: positions, background: rowFrag.attrs.background)
+//      self.drawBackground(positions: positions, background: rowFrag.attrs.background)
+      if positions.isEmpty {
+        return
+      }

      let string = self.grid.cells[rowFrag.row][rowFrag.range].reduce("") { $0 + $1.string }
      let glyphPositions = positions.map { CGPoint(x: $0.x, y: $0.y + self.descent + self.leading) }
@ -164,6 +207,14 @@ public class NeoVimView: NSView {
                    width: width * self.cellSize.width, height: height * self.cellSize.height)
  }

+  func vimNamedKeys(string: String) -> String {
+    return "<\(string)>"
+  }
+  
+  func vimPlainString(string: String) -> String {
+    return string.stringByReplacingOccurrencesOfString("<", withString: self.vimNamedKeys("lt"))
+  }
+  
  required public init?(coder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
  }
--- a/SwiftNeoVim/NeoVimViewEvents.swift
+++ b/SwiftNeoVim/NeoVimViewEvents.swift
@ -25,34 +25,21 @@ extension NeoVimView: NSTextInputClient {

    let vimModifiers = self.vimModifierFlags(modifierFlags)
    if vimModifiers.characters.count > 0 {
-      self.xpc.vimInput(self.vimWrapNamedKeys(vimModifiers + charsIgnoringModifiers))
+      self.xpc.vimInput(self.vimNamedKeys(vimModifiers + charsIgnoringModifiers))
    } else {
-      self.xpc.vimInput(self.vimStringFromPlainString(chars))
+      self.xpc.vimInput(self.vimPlainString(chars))
    }

    self.keyDownDone = true
  }
  
-  private func vimWrapNamedKeys(string: String) -> String {
-    return "<\(string)>"
-  }
-  
-  private func vimStringFromPlainString(string: String) -> String {
-    return string.stringByReplacingOccurrencesOfString("<", withString: self.vimWrapNamedKeys("lt"))
-  }
-  
  private func vimModifierFlags(modifierFlags: NSEventModifierFlags) -> String {
    var result = ""
    
-    let shift = modifierFlags.contains(.ShiftKeyMask)
    let control = modifierFlags.contains(.ControlKeyMask)
    let option = modifierFlags.contains(.AlternateKeyMask)
    let command = modifierFlags.contains(.CommandKeyMask)

-    if shift {
-      result += "S-"
-    }
-    
    if control {
      result += "C-"
    }
@ -71,21 +58,48 @@ extension NeoVimView: NSTextInputClient {
  public func insertText(aString: AnyObject, replacementRange: NSRange) {
    Swift.print("\(#function): \(aString), \(replacementRange)")

-    self.xpc.vimInput(self.vimStringFromPlainString(String(aString)))
+    switch aString {
+    case let string as String:
+      self.xpc.vimInput(self.vimPlainString(string))
+    case let attributedString as NSAttributedString:
+      self.xpc.vimInput(self.vimPlainString(attributedString.string))
+    default:
+      break;
+    }
+
    self.markedText = nil
    self.keyDownDone = true
  }

  public override func doCommandBySelector(aSelector: Selector) {
    Swift.print("\(#function): \(aSelector)")
+
+    // TODO: handle when ㅎ -> delete
+
+    if self.respondsToSelector(aSelector) {
+      Swift.print("\(#function): calling \(aSelector)")
+      self.performSelector(aSelector, withObject: self)
+      self.keyDownDone = true
+      return
+    }
+
+    Swift.print("\(#function): \(aSelector) not implemented, forwarding input to vim")
    self.keyDownDone = false
  }

  public func setMarkedText(aString: AnyObject, selectedRange: NSRange, replacementRange: NSRange) {
    Swift.print("\(#function): \(aString), \(selectedRange), \(replacementRange)")
-    self.markedText = String(aString)
-    self.grid.putMarkedText(self.markedText!)
-    self.setNeedsDisplayInRect(self.cellRect(self.grid.position.row, column: self.grid.position.column))
+
+    switch aString {
+    case let string as String:
+      self.markedText = string
+    case let attributedString as NSAttributedString:
+      self.markedText = attributedString.string
+    default:
+      self.markedText = String(aString) // should not occur
+    }
+
+    self.xpc.vimInputMarkedText(self.markedText!)
    self.keyDownDone = true
  }

@ -117,7 +131,7 @@ extension NeoVimView: NSTextInputClient {

  public func hasMarkedText() -> Bool {
    let result = self.markedText != nil
-    Swift.print("\(#function): returning \(result)")
+//    Swift.print("\(#function): returning \(result)")
    return result
  }

@ -150,12 +164,6 @@ extension NeoVimView: NSTextInputClient {
  }

  /*
-   public func moveForward(sender: AnyObject?)
-   public func moveRight(sender: AnyObject?)
-   public func moveBackward(sender: AnyObject?)
-   public func moveLeft(sender: AnyObject?)
-   public func moveUp(sender: AnyObject?)
-   public func moveDown(sender: AnyObject?)
   public func moveWordForward(sender: AnyObject?)
   public func moveWordBackward(sender: AnyObject?)
   public func moveToBeginningOfLine(sender: AnyObject?)
@ -198,14 +206,9 @@ extension NeoVimView: NSTextInputClient {
   public func moveToLeftEndOfLineAndModifySelection(sender: AnyObject?)
   public func moveToRightEndOfLineAndModifySelection(sender: AnyObject?)

-   public func scrollPageUp(sender: AnyObject?)
-   public func scrollPageDown(sender: AnyObject?)
   public func scrollLineUp(sender: AnyObject?)
   public func scrollLineDown(sender: AnyObject?)

-   public func scrollToBeginningOfDocument(sender: AnyObject?)
-   public func scrollToEndOfDocument(sender: AnyObject?)
-
   public func transpose(sender: AnyObject?)
   public func transposeWords(sender: AnyObject?)

@ -231,8 +234,6 @@ extension NeoVimView: NSTextInputClient {
   public func lowercaseWord(sender: AnyObject?)
   public func capitalizeWord(sender: AnyObject?)

-   public func deleteForward(sender: AnyObject?)
-   public func deleteBackward(sender: AnyObject?)
   public func deleteBackwardByDecomposingPreviousCharacter(sender: AnyObject?)
   public func deleteWordForward(sender: AnyObject?)
   public func deleteWordBackward(sender: AnyObject?)
--- a/SwiftNeoVim/NeoVimViewResponder.swift
+++ b/SwiftNeoVim/NeoVimViewResponder.swift
@ -0,0 +1,58 @@
+/**
+ * Tae Won Ha - http://taewon.de - @hataewon
+ * See LICENSE
+ */
+
+import Cocoa
+
+/// NeoVim's named keys can be found in keymap.c
+extension NeoVimView {
+
+  public override func moveForward(sender: AnyObject?) {
+    self.xpc.vimInput(self.vimNamedKeys("Right"))
+  }
+
+  public override func moveRight(sender: AnyObject?) {
+    self.moveForward(sender)
+  }
+
+  public override func moveBackward(sender: AnyObject?) {
+    self.xpc.vimInput(self.vimNamedKeys("Left"))
+  }
+
+  public override func moveLeft(sender: AnyObject?) {
+    self.moveBackward(sender)
+  }
+
+  public override func moveUp(sender: AnyObject?) {
+    self.xpc.vimInput(self.vimNamedKeys("Up"))
+  }
+
+  public override func moveDown(sender: AnyObject?) {
+    self.xpc.vimInput(self.vimNamedKeys("Down"))
+  }
+
+  public override func deleteForward(sender: AnyObject?) {
+    self.xpc.vimInput(self.vimNamedKeys("DEL"))
+  }
+
+  public override func deleteBackward(sender: AnyObject?) {
+    self.xpc.vimInput(self.vimNamedKeys("BS"))
+  }
+
+  public override func scrollPageUp(sender: AnyObject?) {
+    self.xpc.vimInput(self.vimNamedKeys("PageUp"))
+  }
+
+  public override func scrollPageDown(sender: AnyObject?) {
+    self.xpc.vimInput(self.vimNamedKeys("PageDown"))
+  }
+
+  public override func scrollToBeginningOfDocument(sender: AnyObject?) {
+    self.xpc.vimInput(self.vimNamedKeys("Home"))
+  }
+
+  public override func scrollToEndOfDocument(sender: AnyObject?) {
+    self.xpc.vimInput(self.vimNamedKeys("End"))
+  }
+}
--- a/SwiftNeoVim/NeoVimViewUiBridge.swift
+++ b/SwiftNeoVim/NeoVimViewUiBridge.swift
@ -71,7 +71,7 @@ extension NeoVimView: NeoVimUiBridgeProtocol {
  }
  
  public func modeChange(mode: Int32) {
-    //    Swift.print("### mode change to: \(String(format: "%04X", mode))")
+    Swift.print("### mode change to: \(String(format: "%04X", mode))")
  }
  
  public func setScrollRegionToTop(top: Int32, bottom: Int32, left: Int32, right: Int32) {
@ -101,12 +101,39 @@ extension NeoVimView: NeoVimUiBridgeProtocol {
  
  public func put(string: String) {
    DispatchUtils.gui {
+//      Swift.print("\(#function): \(string)")
      let curPos = Position(row: self.grid.position.row, column: self.grid.position.column)
      self.grid.put(string)

-//      Swift.print("### put: \(curPos) -> '\(string)'")
+      if string.characters.count == 0 {
+        self.setNeedsDisplayPosition(row: curPos.row, column: max(curPos.column - 1, 0))
+      }
+      self.setNeedsDisplayPosition(row: curPos.row, column: curPos.column)
+    }
+  }

-      self.setNeedsDisplayInRect(self.cellRect(curPos.row, column: curPos.column))
+  public func putMarkedText(markedText: String) {
+    DispatchUtils.gui {
+//      Swift.print("\(#function): \(markedText)")
+      let curPos = Position(row: self.grid.position.row, column: self.grid.position.column)
+      self.grid.putMarkedText(markedText)
+
+      if markedText.characters.count == 0 {
+        self.setNeedsDisplayPosition(row: curPos.row, column: max(curPos.column - 1, 0))
+      }
+      self.setNeedsDisplayPosition(row: curPos.row, column: curPos.column)
+    }
+  }
+
+  private func setNeedsDisplayPosition(row row: Int, column: Int) {
+    self.setNeedsDisplayInRect(self.cellRect(row, column: column))
+  }
+
+  public func unmarkRow(row: Int32, column: Int32) {
+    DispatchUtils.gui {
+//      Swift.print("\(#function): \(row):\(column)")
+      self.grid.unmarkCell(Position(row: Int(row), column: Int(column)))
+      self.setNeedsDisplayPosition(row: Int(row), column: Int(column))
    }
  }

--- a/nvox.xcodeproj/project.pbxproj
+++ b/nvox.xcodeproj/project.pbxproj
@ -49,6 +49,7 @@
 		4BEE79151D16D2100012EDAA /* DispatchUtils.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4BEE79141D16D2100012EDAA /* DispatchUtils.swift */; };
 		4BEE79171D16D3800012EDAA /* CellAttributes.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4BEE79161D16D3800012EDAA /* CellAttributes.swift */; };
 		4BEF363D1D1EC045002A9898 /* NeoVimViewEvents.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4BEF363C1D1EC045002A9898 /* NeoVimViewEvents.swift */; };
+		4BFF04841D21984100063EF3 /* NeoVimViewResponder.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4BFF04831D21984100063EF3 /* NeoVimViewResponder.swift */; };
 /* End PBXBuildFile section */

 /* Begin PBXContainerItemProxy section */
@ -150,6 +151,7 @@
 		4BEE79141D16D2100012EDAA /* DispatchUtils.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = DispatchUtils.swift; sourceTree = "<group>"; };
 		4BEE79161D16D3800012EDAA /* CellAttributes.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = CellAttributes.swift; sourceTree = "<group>"; };
 		4BEF363C1D1EC045002A9898 /* NeoVimViewEvents.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = NeoVimViewEvents.swift; sourceTree = "<group>"; };
+		4BFF04831D21984100063EF3 /* NeoVimViewResponder.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = NeoVimViewResponder.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */

 /* Begin PBXFrameworksBuildPhase section */
@ -310,6 +312,7 @@
 				4BEF363C1D1EC045002A9898 /* NeoVimViewEvents.swift */,
 				4BEE79111D16D0AC0012EDAA /* NeoVimViewUiBridge.swift */,
 				4B401B191D046E0600D99EDC /* NeoVimViewDelegate.swift */,
+				4BFF04831D21984100063EF3 /* NeoVimViewResponder.swift */,
 			);
 			name = NeoVimView;
 			sourceTree = "<group>";
@ -513,6 +516,7 @@
 				4BCADE081D11ED12004DAD0F /* CocoaExtensions.swift in Sources */,
 				4B2A2C0F1D0353E30074CE9A /* NeoVim.swift in Sources */,
 				4B401B1A1D046E0600D99EDC /* NeoVimViewDelegate.swift in Sources */,
+				4BFF04841D21984100063EF3 /* NeoVimViewResponder.swift in Sources */,
 				1929B728262BAA14FC93F6AC /* NeoVimView.swift in Sources */,
 				4BEF363D1D1EC045002A9898 /* NeoVimViewEvents.swift in Sources */,
 				4BEE79121D16D0AC0012EDAA /* NeoVimViewUiBridge.swift in Sources */,