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