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1/*
2 * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#import "WebNodeHighlighter.h"
30
31#import "DOMNodeInternal.h"
32#import "WebNodeHighlight.h"
33#import "WebViewInternal.h"
34#import <WebCore/Page.h>
35
36@implementation WebNodeHighlighter
37
38- (id)initWithInspectedWebView:(WebView *)webView
39{
40    if (!(self = [super init]))
41        return nil;
42
43    // Don't retain to avoid a circular reference.
44    _inspectedWebView = webView;
45
46    return self;
47}
48
49- (void)dealloc
50{
51    ASSERT(!_currentHighlight);
52    [super dealloc];
53}
54
55// MARK: -
56
57- (void)highlightNode:(DOMNode *)node
58{
59    // The scrollview's content view stays around between page navigations, so target it.
60    NSView *view = [[[[[_inspectedWebView mainFrame] frameView] documentView] enclosingScrollView] contentView];
61    if (![view window])
62        return; // Skip the highlight if we have no window (e.g. hidden tab).
63
64    if (!_currentHighlight) {
65        _currentHighlight = [[WebNodeHighlight alloc] initWithTargetView:view inspectorController:[_inspectedWebView page]->inspectorController()];
66        [_currentHighlight setDelegate:self];
67        [_currentHighlight attach];
68    } else
69        [[_currentHighlight highlightView] setNeedsDisplay:YES];
70}
71
72- (void)hideHighlight
73{
74    [_currentHighlight detach];
75    [_currentHighlight setDelegate:nil];
76    [_currentHighlight release];
77    _currentHighlight = nil;
78}
79
80// MARK: -
81// MARK: WebNodeHighlight delegate
82
83- (void)didAttachWebNodeHighlight:(WebNodeHighlight *)highlight
84{
85    [_inspectedWebView setCurrentNodeHighlight:highlight];
86}
87
88- (void)willDetachWebNodeHighlight:(WebNodeHighlight *)highlight
89{
90    [_inspectedWebView setCurrentNodeHighlight:nil];
91}
92
93@end
94