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         _requiredModifiers = NSCommandKeyMask;
  21     }
  22     return self;
  23 }
  24
  25 - (void)setAllowsDragging:(bool)flag
  26 {
  27     _allowsDragging = flag;
  28     _requiredModifiers = NSCommandKeyMask;
  29 }
  30
  31 - (bool)allowsDragging
  32 {
  33     return _allowsDragging;
  34 }
  35
  36 - (void)setRequiredModifiers:(unsigned int)modifiers
  37 {
  38     _requiredModifiers = modifiers;
  39 }
  40
  41 - (unsigned int)requiredModifiers
  42 {
  43     return _requiredModifiers;
  44 }
  45
  46 - (void)moveTab:(NSTabViewItem *)tab toIndex:(int)index
  47 {
  48     if ([self indexOfTabViewItem:tab] != index)
  49     {
  50         [tab retain];
  51         [self removeTabViewItem:tab];
  52         [self insertTabViewItem:tab atIndex:index];
  53         [self selectTabViewItem:tab];
  54     }
  55 }
  56
  57 - (void)mouseDown:(NSEvent *)event
  58 {
  59     if ((_requiredModifiers == 0 || ([[NSApp currentEvent] modifierFlags] & _requiredModifiers)) && [self allowsDragging]) {
  60         NSPoint clickedPoint;
  61         clickedPoint = [self convertPoint:[event locationInWindow] fromView:[[self window] contentView]];
  62         NSTabViewItem *clickedTab = [self tabViewItemAtPoint:clickedPoint];
  63         _draggedTab = clickedTab;
  64     }
  65     [super mouseDown:event];
  66 }
  67
  68 - (void)mouseUp:(NSEvent *)event
  69 {
  70     if (_draggedTab && [self allowsDragging]) {
  71         NSPoint releasedPoint = [self convertPoint:[event locationInWindow] fromView:[[self window] contentView]];
  72         NSTabViewItem *releasedTab = [self tabViewItemAtPoint:releasedPoint];
  73         if (releasedTab && ![releasedTab isEqualTo:_draggedTab]) {
  74             [self moveTab:_draggedTab toIndex:[self indexOfTabViewItem:releasedTab]];
  75         }
  76         _draggedTab = nil;
  77     }
  78     [super mouseUp:event];
  79 }
  80
  81 - (void)mouseDragged:(NSEvent *)event
  82 {
  83     if (_draggedTab && [self allowsDragging]) {
  84         NSPoint currentPoint = [self convertPoint:[event locationInWindow] fromView:[[self window] contentView]];
  85         NSTabViewItem *curTab = [self tabViewItemAtPoint:currentPoint];
  86         if (curTab && ![curTab isEqualTo:_draggedTab]) {
  87             [self moveTab:_draggedTab toIndex:[self indexOfTabViewItem:curTab]];
  88             [self selectTabViewItem:_draggedTab];
  89         }
  90     }
  91     [super mouseDragged:event];
  92 }
  93
  94
  95 @end