webcoreview.m

来自「linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自Web」· M 代码 · 共 66 行

/*
 * Copyright (C) 2003 Apple Computer, 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 COMPUTER, 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 COMPUTER, 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. 
 */

#import "config.h"
#import "WebCoreView.h"

@interface NSClipView (WebCoreView)
- (NSView *)_webcore_effectiveFirstResponder;
@end

@interface NSScrollView (WebCoreView)
- (NSView *)_webcore_effectiveFirstResponder;
@end

@implementation NSView (WebCoreView)

- (NSView *)_webcore_effectiveFirstResponder
{
    return self;
}

@end

@implementation NSClipView (WebCoreView)

- (NSView *)_webcore_effectiveFirstResponder
{
    NSView *view = [self documentView];
    return view ? [view _webcore_effectiveFirstResponder] : [super _webcore_effectiveFirstResponder];
}

@end

@implementation NSScrollView (WebCoreView)

- (NSView *)_webcore_effectiveFirstResponder
{
    NSView *view = [self contentView];
    return view ? [view _webcore_effectiveFirstResponder] : [super _webcore_effectiveFirstResponder];
}

@end