--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebKit/WebInspector/WebNodeHighlight.m Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,266 @@
+/*
+ * Copyright (C) 2007 Apple 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.
+ * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ * its contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 "WebNodeHighlight.h"
+#import "WebNodeHighlightView.h"
+#import "WebNSViewExtras.h"
+
+#import <JavaScriptCore/Assertions.h>
+
+#define FADE_ANIMATION_DURATION 0.2
+
+@interface WebNodeHighlightFadeInAnimation : NSAnimation
+@end
+
+@interface WebNodeHighlight (FileInternal)
+- (NSRect)_computeHighlightWindowFrame;
+- (void)_repositionHighlightWindow;
+- (void)_animateFadeIn:(WebNodeHighlightFadeInAnimation *)animation;
+@end
+
+@implementation WebNodeHighlightFadeInAnimation
+
+- (void)setCurrentProgress:(NSAnimationProgress)progress
+{
+ [super setCurrentProgress:progress];
+ [(WebNodeHighlight *)[self delegate] _animateFadeIn:self];
+}
+
+@end
+
+@implementation WebNodeHighlight
+
+- (id)initWithTargetView:(NSView *)targetView
+{
+ self = [super init];
+ if (!self)
+ return nil;
+
+ _targetView = [targetView retain];
+
+ int styleMask = NSBorderlessWindowMask;
+ NSRect contentRect = [NSWindow contentRectForFrameRect:[self _computeHighlightWindowFrame] styleMask:styleMask];
+ _highlightWindow = [[NSWindow alloc] initWithContentRect:contentRect styleMask:styleMask backing:NSBackingStoreBuffered defer:NO];
+ [_highlightWindow setBackgroundColor:[NSColor clearColor]];
+ [_highlightWindow setOpaque:NO];
+ [_highlightWindow setIgnoresMouseEvents:YES];
+ [_highlightWindow setReleasedWhenClosed:NO];
+
+ _highlightView = [[WebNodeHighlightView alloc] initWithWebNodeHighlight:self];
+ [_highlightView setFractionFadedIn:0.0];
+ [_highlightWindow setContentView:_highlightView];
+ [_highlightView release];
+
+ return self;
+}
+
+- (void)setHighlightedNode:(DOMNode *)node
+{
+ id old = _highlightNode;
+ _highlightNode = [node retain];
+ [old release];
+}
+
+- (DOMNode *)highlightedNode
+{
+ return _highlightNode;
+}
+
+- (void)dealloc
+{
+ // FIXME: Bad to do all this work in dealloc. What about under GC?
+
+ [self detachHighlight];
+
+ ASSERT(!_highlightWindow);
+ ASSERT(!_targetView);
+
+ [_fadeInAnimation setDelegate:nil];
+ [_fadeInAnimation stopAnimation];
+ [_fadeInAnimation release];
+
+ [_highlightNode release];
+
+ [super dealloc];
+}
+
+- (void)attachHighlight
+{
+ ASSERT(_targetView);
+ ASSERT([_targetView window]);
+ ASSERT(_highlightWindow);
+
+ // Disable screen updates so the highlight moves in sync with the view.
+ [[_targetView window] disableScreenUpdatesUntilFlush];
+ [[_targetView window] addChildWindow:_highlightWindow ordered:NSWindowAbove];
+
+ // Observe both frame-changed and bounds-changed notifications because either one could leave
+ // the highlight incorrectly positioned with respect to the target view. We need to do this for
+ // the entire superview hierarchy to handle scrolling, bars coming and going, etc.
+ // (without making concrete assumptions about the view hierarchy).
+ NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+ for (NSView *v = _targetView; v; v = [v superview]) {
+ [notificationCenter addObserver:self selector:@selector(_repositionHighlightWindow) name:NSViewFrameDidChangeNotification object:v];
+ [notificationCenter addObserver:self selector:@selector(_repositionHighlightWindow) name:NSViewBoundsDidChangeNotification object:v];
+ }
+
+ if (_delegate && [_delegate respondsToSelector:@selector(didAttachWebNodeHighlight:)])
+ [_delegate didAttachWebNodeHighlight:self];
+}
+
+- (id)delegate
+{
+ return _delegate;
+}
+
+- (void)detachHighlight
+{
+ if (!_highlightWindow) {
+ ASSERT(!_targetView);
+ return;
+ }
+
+ if (_delegate && [_delegate respondsToSelector:@selector(willDetachWebNodeHighlight:)])
+ [_delegate willDetachWebNodeHighlight:self];
+
+ // FIXME: is this necessary while detaching? Should test.
+ [[_targetView window] disableScreenUpdatesUntilFlush];
+
+ NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+ [notificationCenter removeObserver:self name:NSViewFrameDidChangeNotification object:nil];
+ [notificationCenter removeObserver:self name:NSViewBoundsDidChangeNotification object:nil];
+
+ [[_highlightWindow parentWindow] removeChildWindow:_highlightWindow];
+
+ [_highlightWindow release];
+ _highlightWindow = nil;
+
+ [_targetView release];
+ _targetView = nil;
+
+ // We didn't retain _highlightView, but we do need to tell it to forget about us, so it doesn't
+ // try to send our delegate messages after we've been dealloc'ed, e.g.
+ [_highlightView detachFromWebNodeHighlight];
+ _highlightView = nil;
+}
+
+- (void)show
+{
+ ASSERT(!_fadeInAnimation);
+ if (_fadeInAnimation || [_highlightView fractionFadedIn] == 1.0)
+ return;
+
+ _fadeInAnimation = [[WebNodeHighlightFadeInAnimation alloc] initWithDuration:FADE_ANIMATION_DURATION animationCurve:NSAnimationEaseInOut];
+ [_fadeInAnimation setAnimationBlockingMode:NSAnimationNonblocking];
+ [_fadeInAnimation setDelegate:self];
+ [_fadeInAnimation startAnimation];
+}
+
+- (void)hide
+{
+ [_highlightView setFractionFadedIn:0.0];
+}
+
+- (void)animationDidEnd:(NSAnimation *)animation
+{
+ ASSERT(animation == _fadeInAnimation);
+ [_fadeInAnimation release];
+ _fadeInAnimation = nil;
+}
+
+- (BOOL)ignoresMouseEvents
+{
+ ASSERT(_highlightWindow);
+ return [_highlightWindow ignoresMouseEvents];
+}
+
+- (WebNodeHighlightView *)highlightView
+{
+ return _highlightView;
+}
+
+- (void)setDelegate:(id)delegate
+{
+ // The delegate is not retained, as usual in Cocoa.
+ _delegate = delegate;
+}
+
+- (void)setHolesNeedUpdateInTargetViewRect:(NSRect)rect
+{
+ ASSERT(_targetView);
+
+ [_highlightView setHolesNeedUpdateInRect:[_targetView _web_convertRect:rect toView:_highlightView]];
+
+ // Redraw highlight view immediately so it updates in sync with the target view
+ // if we called disableScreenUpdatesUntilFlush on the target view earlier. This
+ // is especially visible when resizing the window.
+ [_highlightView displayIfNeeded];
+}
+
+- (void)setIgnoresMouseEvents:(BOOL)newValue
+{
+ ASSERT(_highlightWindow);
+ [_highlightWindow setIgnoresMouseEvents:newValue];
+}
+
+- (NSView *)targetView
+{
+ return _targetView;
+}
+
+@end
+
+@implementation WebNodeHighlight (FileInternal)
+
+- (NSRect)_computeHighlightWindowFrame
+{
+ ASSERT(_targetView);
+ ASSERT([_targetView window]);
+
+ NSRect highlightWindowFrame = [_targetView convertRect:[_targetView visibleRect] toView:nil];
+ highlightWindowFrame.origin = [[_targetView window] convertBaseToScreen:highlightWindowFrame.origin];
+
+ return highlightWindowFrame;
+}
+
+- (void)_repositionHighlightWindow
+{
+ ASSERT([_targetView window]);
+
+ // Disable screen updates so the highlight moves in sync with the view.
+ [[_targetView window] disableScreenUpdatesUntilFlush];
+
+ [_highlightWindow setFrame:[self _computeHighlightWindowFrame] display:YES];
+}
+
+- (void)_animateFadeIn:(WebNodeHighlightFadeInAnimation *)animation
+{
+ [_highlightView setFractionFadedIn:[animation currentValue]];
+}
+
+@end