1/*
2 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB.  If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20#import "config.h"
21#import "Chrome.h"
22
23#import "BlockExceptions.h"
24#import "ChromeClient.h"
25
26namespace WebCore {
27
28
29void Chrome::focusNSView(NSView* view)
30{
31    BEGIN_BLOCK_OBJC_EXCEPTIONS;
32
33    // Handle the WK2 case where there is no view passed in.
34    if (!view) {
35        client()->makeFirstResponder();
36        return;
37    }
38
39    NSResponder *firstResponder = client()->firstResponder();
40    if (firstResponder == view)
41        return;
42
43    if (![view window] || ![view superview] || ![view acceptsFirstResponder])
44        return;
45
46    client()->makeFirstResponder(view);
47
48    // Setting focus can actually cause a style change which might
49    // remove the view from its superview while it's being made
50    // first responder. This confuses AppKit so we must restore
51    // the old first responder.
52    if (![view superview])
53        client()->makeFirstResponder(firstResponder);
54
55    END_BLOCK_OBJC_EXCEPTIONS;
56}
57
58} // namespace WebCore
59