Constrained Windows Cocoa: Part 4 Refactor ConstrainedWindowSupport

chrome/browser/ui/cocoa/tabs/tab_window_controller.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/ui/cocoa/tabs/tab_window_controller.h"
 
 #include "base/logging.h"
 #import "chrome/browser/ui/cocoa/tabs/tab_strip_view.h"
 #import "chrome/browser/ui/cocoa/themed_window.h"
 #import "ui/base/cocoa/focus_tracker.h"
@@ skipping 24 matching lines @@
   if ([self parentWindow])
     return [[[self parentWindow] windowController] themePatternPhase];
   return NSZeroPoint;
 }
 
 @end
 
 @implementation TabWindowController
 @synthesize tabContentArea = tabContentArea_;
 
-- (id)initWithWindow:(NSWindow*)window {
-  if ((self = [super initWithWindow:window]) != nil) {
-    lockedTabs_.reset([[NSMutableSet alloc] initWithCapacity:10]);
-  }
-  return self;
-}
-
 // Add the top tab strop to the window, above the content box and add it to the
 // view hierarchy as a sibling of the content view so it can overlap with the
 // window frame.
 - (void)addTabStripToWindow {
   NSRect contentFrame = [tabContentArea_ frame];
   NSRect tabFrame =
       NSMakeRect(0, NSMaxY(contentFrame),
                  NSWidth(contentFrame),
                  NSHeight([tabStripView_ frame]));
   [tabStripView_ setFrame:tabFrame];
@@ skipping 201 matching lines @@
   return @"";
 }
 
 - (BOOL)hasTabStrip {
   // Subclasses should implement this.
   NOTIMPLEMENTED();
   return YES;
 }
 
 - (BOOL)isTabDraggable:(NSView*)tabView {
-  return ![lockedTabs_ containsObject:tabView];
-}
-
-- (void)setTab:(NSView*)tabView isDraggable:(BOOL)draggable {
-  if (draggable)
-    [lockedTabs_ removeObject:tabView];
-  else
-    [lockedTabs_ addObject:tabView];
+  // Subclasses should implement this.
+  NOTIMPLEMENTED();
+  return YES;
 }
 
 // Tell the window that it needs to call performClose: as soon as the current
 // drag is complete. This prevents a window (and its overlay) from going away
 // during a drag.
 - (void)deferPerformClose {
   closeDeferred_ = YES;
 }
 
 // Called when the size of the window content area has changed. Override to
 // position specific views. Base class implementation does nothing.
 - (void)layoutSubviews {
   NOTIMPLEMENTED();
 }
 
 @end