ITTabView.m

   1 #import "ITTabView.h"
   2
   3 @interface NSTabViewItem (ITTabViewHacks)
   4 - (NSRect)_tabRect;
   5 @end
   6
   7 @implementation ITTabView
   8
   9 - (id)initWithFrame:(NSRect)frame {
  10         if ((self = [super initWithFrame:frame])) {
  11                 _draggedTab = nil;
  12                 _allowsDragging = NO;
  13                 _requiredModifiers = NSCommandKeyMask;
  14         }
  15         return self;
  16 }
  17
  18 - (void)setAllowsDragging:(BOOL)flag {
  19         _allowsDragging = flag;
  20 }
  21
  22 - (BOOL)allowsDragging {
  23         return _allowsDragging;
  24 }
  25
  26 - (void)setRequiredModifiers:(unsigned int)modifiers {
  27         _requiredModifiers = modifiers;
  28 }
  29
  30 - (unsigned int)requiredModifiers {
  31         return _requiredModifiers;
  32 }
  33
  34 - (void)moveTab:(NSTabViewItem *)tab toIndex:(int)index {
  35         int oldIndex = [self indexOfTabViewItem:tab];
  36         if ((oldIndex != NSNotFound) && (oldIndex != index)) {
  37                 [tab retain];
  38                 [self removeTabViewItem:tab];
  39                 [self insertTabViewItem:tab atIndex:index];
  40                 [self selectTabViewItem:tab];
  41                 [tab release];
  42         }
  43 }
  44
  45 - (void)mouseDown:(NSEvent *)event {
  46         if ((_requiredModifiers == 0 || ([[NSApp currentEvent] modifierFlags] & _requiredModifiers)) && [self allowsDragging]) {
  47                 NSPoint clickedPoint;
  48                 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         if (_draggedTab && [self allowsDragging]) {
  57                 NSPoint releasedPoint = [self convertPoint:[event locationInWindow] fromView:[[self window] contentView]];
  58                 NSTabViewItem *releasedTab = [self tabViewItemAtPoint:releasedPoint];
  59                 if (releasedTab && ![releasedTab isEqualTo:_draggedTab]) {
  60                         [self moveTab:_draggedTab toIndex:[self indexOfTabViewItem:releasedTab]];
  61                 }
  62                 _draggedTab = nil;
  63         }
  64         [super mouseUp:event];
  65 }
  66
  67 - (void)mouseDragged:(NSEvent *)event {
  68         if (_draggedTab && [self allowsDragging]) {
  69                 NSPoint currentPoint = [self convertPoint:[event locationInWindow] fromView:[[self window] contentView]];
  70                 NSTabViewItem *curTab = [self tabViewItemAtPoint:currentPoint];
  71                 if (curTab && ![curTab isEqualTo:_draggedTab]) {
  72                         [self moveTab:_draggedTab toIndex:[self indexOfTabViewItem:curTab]];
  73                         [self selectTabViewItem:_draggedTab];
  74                 }
  75         }
  76         [super mouseDragged:event];
  77 }
  78
  79 @end