diff options
Diffstat (limited to 'chromium/third_party/WebKit/Source/platform/mac/NSScrollerImpDetails.mm')
-rw-r--r-- | chromium/third_party/WebKit/Source/platform/mac/NSScrollerImpDetails.mm | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/chromium/third_party/WebKit/Source/platform/mac/NSScrollerImpDetails.mm b/chromium/third_party/WebKit/Source/platform/mac/NSScrollerImpDetails.mm deleted file mode 100644 index 703ce2f42e9..00000000000 --- a/chromium/third_party/WebKit/Source/platform/mac/NSScrollerImpDetails.mm +++ /dev/null @@ -1,95 +0,0 @@ -/* - * Copyright (C) 2011 Apple Inc. All Rights Reserved. - * Copyright (C) 2011 Google Inc. All Rights Reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY - * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - - -#include "config.h" -#include "RuntimeEnabledFeatures.h" -#include "platform/mac/NSScrollerImpDetails.h" - -namespace { - -// Declare notification names from the 10.7 SDK. -#if !defined(MAC_OS_X_VERSION_10_7) || MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7 -NSString* NSPreferredScrollerStyleDidChangeNotification = @"NSPreferredScrollerStyleDidChangeNotification"; -#endif - -// Storing the current NSScrollerStyle as a global is appreciably faster than -// having it be a property of ScrollerStylerObserver. -NSScrollerStyle g_scrollerStyle = NSScrollerStyleLegacy; - -} // anonymous namespace - -@interface ScrollerStyleObserver : NSObject -- (id)init; -- (void)preferredScrollerStyleDidChange:(NSNotification*)notification; -@end - -@implementation ScrollerStyleObserver -- (id)init -{ - if ((self = [super init])) { - if ([NSScroller respondsToSelector:@selector(preferredScrollerStyle)]) { - g_scrollerStyle = [NSScroller preferredScrollerStyle]; - NSNotificationCenter* center = [NSNotificationCenter defaultCenter]; - [center addObserver:self - selector:@selector(preferredScrollerStyleDidChange:) - name:NSPreferredScrollerStyleDidChangeNotification - object:nil]; - } - } - return self; -} - -- (void)preferredScrollerStyleDidChange:(NSNotification*)notification -{ - g_scrollerStyle = [NSScroller preferredScrollerStyle]; -} -@end - -namespace WebCore { - -bool isScrollbarOverlayAPIAvailable() -{ - static bool apiAvailable = - [NSClassFromString(@"NSScrollerImp") respondsToSelector:@selector(scrollerImpWithStyle:controlSize:horizontal:replacingScrollerImp:)] - && [NSClassFromString(@"NSScrollerImpPair") instancesRespondToSelector:@selector(scrollerStyle)]; - return apiAvailable; -} - -NSScrollerStyle recommendedScrollerStyle() -{ - if (RuntimeEnabledFeatures::overlayScrollbarsEnabled()) - return NSScrollerStyleOverlay; - - // The ScrollerStyleObserver will update g_scrollerStyle at init and when needed. - // This function is hot. - // http://crbug.com/303205 - static ScrollerStyleObserver* scrollerStyleObserver = [[ScrollerStyleObserver alloc] init]; - (void)scrollerStyleObserver; - return g_scrollerStyle; -} - -} |