Mac: make save/open dialogs operate as tab-modal sheets....

chrome/browser/cocoa/tab_strip_controller.mm

 // Copyright (c) 2009 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/cocoa/tab_strip_controller.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/mac_util.h"
 #include "base/nsimage_cache_mac.h"
@@ skipping 176 matching lines @@
   NSArray* subviews = [switchView_ subviews];
   if ([subviews count]) {
     NSView* oldView = [subviews objectAtIndex:0];
     [switchView_ replaceSubview:oldView with:newView];
   } else {
     [switchView_ addSubview:newView];
   }
 
   // Make sure the new tabs's sheets are visible (necessary when a background
   // tab opened a sheet while it was in the background and now becomes active).
+  // TODO(viettrungluu@gmail.com): Directly iterating over the |TabContents|'s
+  // (essentially internal, private) list isn't great -- I'd like to get rid of
+  // this and somehow move it into |TabContents| itself (or provide a cleaner
+  // interface).
   TabContents* newTab = tabModel_->GetTabContentsAt(index);
   DCHECK(newTab);
   if (newTab) {
     TabContents::ConstrainedWindowList::iterator it, end;
     end = newTab->constrained_window_end();
     NSWindowController* controller = [[newView window] windowController];
     DCHECK([controller isKindOfClass:[BrowserWindowController class]]);
 
     for (it = newTab->constrained_window_begin(); it != end; ++it) {
       ConstrainedWindow* constrainedWindow = *it;
@@ skipping 745 matching lines @@
 
   // View hierarchy of the contents view:
   // NSView  -- switchView, same for all tabs
   // +-  NSView  -- TabContentsController's view
   //     +- NSBox
   //        +- TabContentsViewCocoa
   // We use the TabContentsController's view in |swapInTabAtIndex|, so we have
   // to pass it to the sheet controller here.
   NSView* tabContentsView =
       [[window->owner()->GetNativeView() superview] superview];
-  window->delegate()->RunSheet([self sheetController], tabContentsView);
+  SEL frameSelector = nil;
+  SEL positionSelector = nil;
+  if (window->delegate()->GetModalityLevel() >=
+                                              ConstrainedWindow::kModalForTab) {
+    frameSelector = @selector(frameWithBars);
+    positionSelector = @selector(positionSheetBelowToolbar:usingRect:);
+  }
+  window->delegate()->RunSheet([self sheetController],
+                               tabContentsView,
+                               frameSelector,
+                               positionSelector);
 
   // TODO(avi, thakis): GTMWindowSheetController has no api to move tabsheets
   // between windows. Until then, we have to prevent having to move a tabsheet
   // between windows, e.g. no tearing off of tabs.
   NSInteger index = [self indexForContentsView:tabContentsView];
   BrowserWindowController* controller =
       (BrowserWindowController*)[[switchView_ window] windowController];
   DCHECK(controller != nil);
   DCHECK(index >= 0);
   if (index >= 0) {
@@ skipping 12 matching lines @@
   BrowserWindowController* controller =
       (BrowserWindowController*)[[switchView_ window] windowController];
   DCHECK(index >= 0);
   if (index >= 0) {
     [controller setTab:[self viewAtIndex:index] isDraggable:YES];
   }
 }
 
 
 @end