ITTabView.m

   1 #import "ITTabView.h"
   2
   3 @implementation ITTabView
   4
   5 - (id)initWithFrame:(NSRect)frame
   6 {
   7     if ( (self = [super initWithFrame:frame]) ) {
   8         _draggedTab = nil;
   9     }
  10     return self;
  11 }
  12
  13 - (void)mouseDown:(NSEvent *)event
  14 {
  15     NSPoint clickedPoint = [self convertPoint:[event locationInWindow] fromView:[[self window] contentView]];
  16     NSTabViewItem *clickedTab = [self tabViewItemAtPoint:clickedPoint];
  17     _draggedTab = clickedTab;
  18     [super mouseDown:event];
  19 }
  20
  21 - (void)mouseUp:(NSEvent *)event
  22 {
  23     NSPoint releasedPoint = [self convertPoint:[event locationInWindow] fromView:[[self window] contentView]];
  24     NSTabViewItem *releasedTab = [self tabViewItemAtPoint:releasedPoint];
  25     if (releasedTab && ![releasedTab isEqualTo:_draggedTab]) {
  26         int releasedTabIndex = [self indexOfTabViewItem:releasedTab];
  27         [_draggedTab retain];
  28         [self removeTabViewItem:_draggedTab];
  29         [self insertTabViewItem:_draggedTab atIndex:releasedTabIndex];
  30         [self selectTabViewItem:_draggedTab];
  31     }
  32     _draggedTab = nil;
  33     [super mouseUp:event];
  34 }
  35
  36 - (void)mouseDragged:(NSEvent *)event
  37 {
  38     NSPoint currentPoint = [self convertPoint:[event locationInWindow] fromView:[[self window] contentView]];
  39     NSTabViewItem *curTab = [self tabViewItemAtPoint:currentPoint];
  40     if (curTab && ![curTab isEqualTo:_draggedTab]) {
  41         int curTabIndex = [self indexOfTabViewItem:curTab];
  42         [_draggedTab retain];
  43         [self removeTabViewItem:_draggedTab];
  44         [self insertTabViewItem:_draggedTab atIndex:curTabIndex];
  45         [self selectTabViewItem:_draggedTab];
  46     }
  47     [super mouseDragged:event];
  48 }
  49
  50 @end