ITTabView.m

   1 #import "ITTabView.h"
   2
   3 /*************************************************************************/
   4 #pragma mark -
   5 #pragma mark EVIL HACKERY
   6 /*************************************************************************/
   7
   8 @interface NSTabViewItem (HACKHACKHACKHACK)
   9 - (NSRect)_tabRect;
  10 @end
  11
  12
  13 @implementation ITTabView
  14
  15 - (id)initWithFrame:(NSRect)frame
  16 {
  17     if ( (self = [super initWithFrame:frame]) ) {
  18         _draggedTab = nil;
  19         _allowsDragging = NO;
  20     }
  21     return self;
  22 }
  23
  24 - (void)setAllowsDragging:(bool)flag
  25 {
  26     _allowsDragging = flag;
  27 }
  28
  29 - (bool)allowsDragging
  30 {
  31     return _allowsDragging;
  32 }
  33
  34 - (void)moveTab:(NSTabViewItem *)tab toIndex:(int)index
  35 {
  36     if ([self indexOfTabViewItem:tab] != index)
  37     {
  38         [tab retain];
  39         [self removeTabViewItem:tab];
  40         [self insertTabViewItem:tab atIndex:index];
  41         [self selectTabViewItem:tab];
  42     }
  43 }
  44
  45 - (void)mouseDown:(NSEvent *)event
  46 {
  47     if ([self allowsDragging]) {
  48         NSPoint clickedPoint = [self convertPoint:[event locationInWindow] fromView:[[self window] contentView]];
  49         NSTabViewItem *clickedTab = [self tabViewItemAtPoint:clickedPoint];
  50         _draggedTab = clickedTab;
  51     }
  52     [super mouseDown:event];
  53 }
  54
  55 - (void)mouseUp:(NSEvent *)event
  56 {
  57     if ([self allowsDragging]) {
  58         NSPoint releasedPoint = [self convertPoint:[event locationInWindow] fromView:[[self window] contentView]];
  59         NSTabViewItem *releasedTab = [self tabViewItemAtPoint:releasedPoint];
  60         if (releasedTab && ![releasedTab isEqualTo:_draggedTab]) {
  61             [self moveTab:_draggedTab toIndex:[self indexOfTabViewItem:releasedTab]];
  62         }
  63         _draggedTab = nil;
  64     }
  65     [super mouseUp:event];
  66 }
  67
  68 - (void)mouseDragged:(NSEvent *)event
  69 {
  70     if ([self allowsDragging]) {
  71         NSPoint currentPoint = [self convertPoint:[event locationInWindow] fromView:[[self window] contentView]];
  72         NSTabViewItem *curTab = [self tabViewItemAtPoint:currentPoint];
  73         if (curTab && ![curTab isEqualTo:_draggedTab]) {
  74             [self moveTab:_draggedTab toIndex:[self indexOfTabViewItem:curTab]];
  75             [self selectTabViewItem:_draggedTab];
  76         }
  77     }
  78     [super mouseDragged:event];
  79 }
  80
  81 @end