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Diffstat (limited to 'Source/WebKit/mac/WebView/WebFrameView.mm')
| -rw-r--r-- | Source/WebKit/mac/WebView/WebFrameView.mm | 1169 |
1 files changed, 0 insertions, 1169 deletions
diff --git a/Source/WebKit/mac/WebView/WebFrameView.mm b/Source/WebKit/mac/WebView/WebFrameView.mm deleted file mode 100644 index c82c056bd..000000000 --- a/Source/WebKit/mac/WebView/WebFrameView.mm +++ /dev/null @@ -1,1169 +0,0 @@ -/* - * Copyright (C) 2005, 2006, 2007, 2008 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 "WebFrameView.h" - -#import "WebClipView.h" -#import "WebDataSourcePrivate.h" -#import "WebDocument.h" -#import "WebDynamicScrollBarsViewInternal.h" -#import "WebFrame.h" -#import "WebFrameInternal.h" -#import "WebFrameViewInternal.h" -#import "WebFrameViewPrivate.h" -#import "WebHistoryItemInternal.h" -#import "WebHTMLViewPrivate.h" -#import "WebKeyGenerator.h" -#import "WebKitErrorsPrivate.h" -#import "WebKitStatisticsPrivate.h" -#import "WebKitVersionChecks.h" -#import "WebNSDictionaryExtras.h" -#import "WebNSObjectExtras.h" -#import "WebNSPasteboardExtras.h" -#import "WebNSViewExtras.h" -#import "WebNSWindowExtras.h" -#import "WebPDFView.h" -#import "WebPreferenceKeysPrivate.h" -#import "WebResourceInternal.h" -#import "WebSystemInterface.h" -#import "WebViewInternal.h" -#import "WebViewPrivate.h" -#import <Foundation/NSURLRequest.h> -#import <WebCore/BackForwardListImpl.h> -#import <WebCore/DragController.h> -#import <WebCore/EventHandler.h> -#import <WebCore/Frame.h> -#import <WebCore/FrameView.h> -#import <WebCore/HistoryItem.h> -#import <WebCore/Page.h> -#import <WebCore/RenderPart.h> -#import <WebCore/ThreadCheck.h> -#import <WebCore/WebCoreFrameView.h> -#import <WebCore/WebCoreView.h> -#import <WebKitSystemInterface.h> -#import <wtf/Assertions.h> - -using namespace WebCore; - -@interface NSWindow (WindowPrivate) -- (BOOL)_needsToResetDragMargins; -- (void)_setNeedsToResetDragMargins:(BOOL)s; -@end - -@interface NSClipView (AppKitSecretsIKnow) -- (BOOL)_scrollTo:(const NSPoint *)newOrigin animate:(BOOL)animate; // need the boolean result from this method -@end - -#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090 -@interface NSView (Details) -- (void)setBackgroundColor:(NSColor *)color; -@end -#endif - -enum { - SpaceKey = 0x0020 -}; - -@interface WebFrameView (WebFrameViewFileInternal) <WebCoreFrameView> -- (float)_verticalKeyboardScrollDistance; -@end - -@interface WebFrameViewPrivate : NSObject { -@public - WebFrame *webFrame; - WebDynamicScrollBarsView *frameScrollView; - BOOL includedInWebKitStatistics; -} -@end - -@implementation WebFrameViewPrivate - -- (void)dealloc -{ - [frameScrollView release]; - [super dealloc]; -} - -@end - -@implementation WebFrameView (WebFrameViewFileInternal) - -- (float)_verticalKeyboardScrollDistance -{ - // Arrow keys scroll the same distance that clicking the scroll arrow does. - return [[self _scrollView] verticalLineScroll]; -} - -- (Frame*)_web_frame -{ - return core(_private->webFrame); -} - -@end - -@implementation WebFrameView (WebInternal) - -// Note that the WebVew is not retained. -- (WebView *)_webView -{ - return [_private->webFrame webView]; -} - -- (void)_setDocumentView:(NSView <WebDocumentView> *)view -{ - WebDynamicScrollBarsView *sv = [self _scrollView]; - -#if ENABLE(DRAG_SUPPORT) - core([self _webView])->dragController()->setDidInitiateDrag(false); -#endif - - [sv setSuppressLayout:YES]; - - // If the old view is the first responder, transfer first responder status to the new view as - // a convenience and so that we don't leave the window pointing to a view that's no longer in it. - NSWindow *window = [sv window]; - NSResponder *firstResponder = [window firstResponder]; - bool makeNewViewFirstResponder = [firstResponder isKindOfClass:[NSView class]] && [(NSView *)firstResponder isDescendantOf:[sv documentView]]; - - // Suppress the resetting of drag margins since we know we can't affect them. - BOOL resetDragMargins = [window _needsToResetDragMargins]; - [window _setNeedsToResetDragMargins:NO]; - [sv setDocumentView:view]; - [window _setNeedsToResetDragMargins:resetDragMargins]; - - if (makeNewViewFirstResponder) - [window makeFirstResponder:view]; - [sv setSuppressLayout:NO]; -} - --(NSView <WebDocumentView> *)_makeDocumentViewForDataSource:(WebDataSource *)dataSource -{ - NSString* MIMEType = [dataSource _responseMIMEType]; - if (!MIMEType) - MIMEType = @"text/html"; - Class viewClass = [self _viewClassForMIMEType:MIMEType]; - NSView <WebDocumentView> *documentView; - if (viewClass) { - // If the dataSource's representation has already been created, and it is also the - // same class as the desired documentView, then use it as the documentView instead - // of creating another one (Radar 4340787). - id <WebDocumentRepresentation> dataSourceRepresentation = [dataSource representation]; - if (dataSourceRepresentation && [dataSourceRepresentation class] == viewClass) - documentView = (NSView <WebDocumentView> *)[dataSourceRepresentation retain]; - else - documentView = [[viewClass alloc] init]; - } else - documentView = nil; - - [self _setDocumentView:documentView]; - [documentView release]; - - return documentView; -} - -- (void)_setWebFrame:(WebFrame *)webFrame -{ - if (!webFrame) { - NSView *docV = [self documentView]; - if ([docV respondsToSelector:@selector(close)]) - [docV performSelector:@selector(close)]; - } - - // Not retained because the WebView owns the WebFrame, which owns the WebFrameView. - _private->webFrame = webFrame; - - if (!_private->includedInWebKitStatistics && [webFrame _isIncludedInWebKitStatistics]) { - _private->includedInWebKitStatistics = YES; - ++WebFrameViewCount; - } -} - -- (WebDynamicScrollBarsView *)_scrollView -{ - // This can be called by [super dealloc] when cleaning up the key view loop, - // after _private has been nilled out. - if (_private == nil) - return nil; - return _private->frameScrollView; -} - -- (float)_verticalPageScrollDistance -{ - float height = [[self _contentView] bounds].size.height; - return max<float>(height * Scrollbar::minFractionToStepWhenPaging(), height - Scrollbar::maxOverlapBetweenPages()); -} - -static inline void addTypesFromClass(NSMutableDictionary *allTypes, Class objCClass, NSArray *supportTypes) -{ - NSEnumerator *enumerator = [supportTypes objectEnumerator]; - ASSERT(enumerator != nil); - NSString *mime = nil; - while ((mime = [enumerator nextObject]) != nil) { - // Don't clobber previously-registered classes. - if ([allTypes objectForKey:mime] == nil) - [allTypes setObject:objCClass forKey:mime]; - } -} - -+ (NSMutableDictionary *)_viewTypesAllowImageTypeOmission:(BOOL)allowImageTypeOmission -{ - static NSMutableDictionary *viewTypes = nil; - static BOOL addedImageTypes = NO; - - if (!viewTypes) { - viewTypes = [[NSMutableDictionary alloc] init]; - addTypesFromClass(viewTypes, [WebHTMLView class], [WebHTMLView supportedNonImageMIMETypes]); - - // Since this is a "secret default" we don't bother registering it. - BOOL omitPDFSupport = [[NSUserDefaults standardUserDefaults] boolForKey:@"WebKitOmitPDFSupport"]; - if (!omitPDFSupport) - addTypesFromClass(viewTypes, [WebPDFView class], [WebPDFView supportedMIMETypes]); - } - - if (!addedImageTypes && !allowImageTypeOmission) { - addTypesFromClass(viewTypes, [WebHTMLView class], [WebHTMLView supportedImageMIMETypes]); - addedImageTypes = YES; - } - - return viewTypes; -} - -+ (BOOL)_canShowMIMETypeAsHTML:(NSString *)MIMEType -{ - return [[[self _viewTypesAllowImageTypeOmission:YES] _webkit_objectForMIMEType:MIMEType] isSubclassOfClass:[WebHTMLView class]]; -} - -+ (Class)_viewClassForMIMEType:(NSString *)MIMEType allowingPlugins:(BOOL)allowPlugins -{ - Class viewClass; - return [WebView _viewClass:&viewClass andRepresentationClass:nil forMIMEType:MIMEType allowingPlugins:allowPlugins] ? viewClass : nil; -} - -- (Class)_viewClassForMIMEType:(NSString *)MIMEType -{ - return [[self class] _viewClassForMIMEType:MIMEType allowingPlugins:[[[self _webView] preferences] arePlugInsEnabled]]; -} - -- (void)_install -{ - ASSERT(_private->webFrame); - ASSERT(_private->frameScrollView); - - Frame* frame = core(_private->webFrame); - - ASSERT(frame); - ASSERT(frame->page()); - - // If this isn't the main frame, it must have an owner element set, or it - // won't ever get installed in the view hierarchy. - ASSERT(frame == frame->page()->mainFrame() || frame->ownerElement()); - - FrameView* view = frame->view(); - - view->setPlatformWidget(_private->frameScrollView); - - // FIXME: Frame tries to do this too. Is this code needed? - if (RenderPart* owner = frame->ownerRenderer()) { - owner->setWidget(view); - // Now the render part owns the view, so we don't any more. - } - - view->updateCanHaveScrollbars(); -} - -- (void)_frameSizeChanged -{ - // See WebFrameLoaderClient::provisionalLoadStarted. - if ([[[self webFrame] webView] drawsBackground]) - [[self _scrollView] setDrawsBackground:YES]; - if (Frame* coreFrame = [self _web_frame]) { - if (FrameView* coreFrameView = coreFrame->view()) - coreFrameView->setNeedsLayout(); - } -} - -@end - -@implementation WebFrameView - -- (id)initWithFrame:(NSRect)frame -{ - self = [super initWithFrame:frame]; - if (!self) - return nil; - - static bool didFirstTimeInitialization; - if (!didFirstTimeInitialization) { - didFirstTimeInitialization = true; - InitWebCoreSystemInterface(); - - // Need to tell WebCore what function to call for the "History Item has Changed" notification. - // Note: We also do this in WebHistoryItem's init method. - WebCore::notifyHistoryItemChanged = WKNotifyHistoryItemChanged; - -// FIXME: Remove the NSAppKitVersionNumberWithDeferredWindowDisplaySupport check once -// once AppKit's Deferred Window Display support is available. -#if !defined(NSAppKitVersionNumberWithDeferredWindowDisplaySupport) - // CoreGraphics deferred updates are disabled if WebKitEnableCoalescedUpdatesPreferenceKey is NO - // or has no value. For compatibility with Mac OS X 10.5 and lower, deferred updates are off by default. - if (![[NSUserDefaults standardUserDefaults] boolForKey:WebKitEnableDeferredUpdatesPreferenceKey]) - WKDisableCGDeferredUpdates(); -#endif - if (!WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_MAIN_THREAD_EXCEPTIONS)) - setDefaultThreadViolationBehavior(LogOnFirstThreadViolation, ThreadViolationRoundOne); - - bool throwExceptionsForRoundTwo = WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_ROUND_TWO_MAIN_THREAD_EXCEPTIONS); -#ifdef MAIL_THREAD_WORKAROUND - // Even if old Mail is linked with new WebKit, don't throw exceptions. - if ([WebResource _needMailThreadWorkaroundIfCalledOffMainThread]) - throwExceptionsForRoundTwo = false; -#endif - if (!throwExceptionsForRoundTwo) - setDefaultThreadViolationBehavior(LogOnFirstThreadViolation, ThreadViolationRoundTwo); - } - - _private = [[WebFrameViewPrivate alloc] init]; - - WebDynamicScrollBarsView *scrollView = [[WebDynamicScrollBarsView alloc] initWithFrame:NSMakeRect(0.0f, 0.0f, frame.size.width, frame.size.height)]; - _private->frameScrollView = scrollView; - [scrollView setContentView:[[[WebClipView alloc] initWithFrame:[scrollView bounds]] autorelease]]; - [scrollView setDrawsBackground:NO]; - [scrollView setHasVerticalScroller:NO]; - [scrollView setHasHorizontalScroller:NO]; - [scrollView setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable]; - [scrollView setLineScroll:Scrollbar::pixelsPerLineStep()]; - [self addSubview:scrollView]; - - // Don't call our overridden version of setNextKeyView here; we need to make the standard NSView - // link between us and our subview so that previousKeyView and previousValidKeyView work as expected. - // This works together with our becomeFirstResponder and setNextKeyView overrides. - [super setNextKeyView:scrollView]; - - return self; -} - -- (void)dealloc -{ - if (_private && _private->includedInWebKitStatistics) - --WebFrameViewCount; - - [_private release]; - _private = nil; - - [super dealloc]; -} - -- (void)finalize -{ - if (_private && _private->includedInWebKitStatistics) - --WebFrameViewCount; - - [super finalize]; -} - -- (WebFrame *)webFrame -{ - // This method can be called beneath -[NSView dealloc] after _private has been cleared. - return _private ? _private->webFrame : nil; -} - -- (void)setAllowsScrolling:(BOOL)flag -{ - WebCore::Frame *frame = core([self webFrame]); - if (WebCore::FrameView *view = frame? frame->view() : 0) - view->setCanHaveScrollbars(flag); -} - -- (BOOL)allowsScrolling -{ - WebCore::Frame *frame = core([self webFrame]); - if (WebCore::FrameView *view = frame? frame->view() : 0) - return view->canHaveScrollbars(); - return YES; -} - -- (NSView <WebDocumentView> *)documentView -{ - return [[self _scrollView] documentView]; -} - -- (BOOL)acceptsFirstResponder -{ - // We always accept first responder; this matches OS X 10.2 WebKit - // behavior (see 3469791). - return YES; -} - -- (BOOL)becomeFirstResponder -{ - // This works together with setNextKeyView to splice the WebFrameView into - // the key loop similar to the way NSScrollView does this. Note that - // WebView has similar code. - - NSWindow *window = [self window]; - if ([window keyViewSelectionDirection] == NSSelectingPrevious) { - NSView *previousValidKeyView = [self previousValidKeyView]; - // If we couldn't find a previous valid key view, ask the WebView. This handles frameset - // cases (one is mentioned in Radar bug 3748628). Note that previousValidKeyView should - // never be self but can be due to AppKit oddness (mentioned in Radar bug 3748628). - if (previousValidKeyView == nil || previousValidKeyView == self) - previousValidKeyView = [[[self webFrame] webView] previousValidKeyView]; - [window makeFirstResponder:previousValidKeyView]; - } else { - // If the scroll view won't accept first-responderness now, then just become - // the first responder ourself like a normal view. This lets us be the first - // responder in cases where no page has yet been loaded. - if ([[self _scrollView] acceptsFirstResponder]) - [window makeFirstResponder:[self _scrollView]]; - } - - return YES; -} - -- (void)setNextKeyView:(NSView *)aView -{ - // This works together with becomeFirstResponder to splice the WebFrameView into - // the key loop similar to the way NSScrollView does this. Note that - // WebView has very similar code. - if ([self _scrollView] != nil) { - [[self _scrollView] setNextKeyView:aView]; - } else { - [super setNextKeyView:aView]; - } -} - -- (BOOL)isOpaque -{ - return [[self _webView] drawsBackground]; -} - -- (void)drawRect:(NSRect)rect -{ - if (![self documentView]) { - // Need to paint ourselves if there's no documentView to do it instead. - if ([[self _webView] drawsBackground]) { - [[[self _webView] backgroundColor] set]; - NSRectFill(rect); - } - } else { -#ifndef NDEBUG - if ([[self _scrollView] drawsBackground]) { - [[NSColor cyanColor] set]; - NSRectFill(rect); - } -#endif - } -} - -#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090 -- (BOOL)wantsUpdateLayer -{ - return YES; -} - -- (void)updateLayer -{ - // Do what -drawRect: does but by setting a backgroundColor on the view. This avoids - // backing store for this view when the WebView is layer-backed. - if (![self documentView]) { - if ([[self _webView] drawsBackground]) { - [self setBackgroundColor:[[self _webView] backgroundColor]]; - return; - } - } else { -#ifndef NDEBUG - if ([[self _scrollView] drawsBackground]) { - [self setBackgroundColor:[NSColor cyanColor]]; - return; - } -#endif - } - - [self setBackgroundColor:[NSColor clearColor]]; -} -#endif - -- (NSRect)visibleRect -{ - // This method can be called beneath -[NSView dealloc] after we have cleared _private. - if (!_private) - return [super visibleRect]; - - // FIXME: <rdar://problem/6213380> This method does not work correctly with transforms, for two reasons: - // 1) [super visibleRect] does not account for the transform, since it is not represented - // in the NSView hierarchy. - // 2) -_getVisibleRect: does not correct for transforms. - - NSRect rendererVisibleRect; - if (![[self webFrame] _getVisibleRect:&rendererVisibleRect]) - return [super visibleRect]; - - if (NSIsEmptyRect(rendererVisibleRect)) - return NSZeroRect; - - NSRect viewVisibleRect = [super visibleRect]; - if (NSIsEmptyRect(viewVisibleRect)) - return NSZeroRect; - - NSRect frame = [self frame]; - // rendererVisibleRect is in the parent's coordinate space, and frame is in the superview's coordinate space. - // The return value from this method needs to be in this view's coordinate space. We get that right by subtracting - // the origins (and correcting for flipping), but when we support transforms, we will need to do better than this. - rendererVisibleRect.origin.x -= frame.origin.x; - rendererVisibleRect.origin.y = NSMaxY(frame) - NSMaxY(rendererVisibleRect); - return NSIntersectionRect(rendererVisibleRect, viewVisibleRect); -} - -- (void)setFrameSize:(NSSize)size -{ - if (!NSEqualSizes(size, [self frame].size)) - [self _frameSizeChanged]; - - [super setFrameSize:size]; -} - -- (void)viewDidMoveToWindow -{ - // See WebFrameLoaderClient::provisionalLoadStarted. - // Need to check _private for nil because this can be called inside -[WebView initWithCoder:]. - if (_private && [[[self webFrame] webView] drawsBackground]) - [[self _scrollView] setDrawsBackground:YES]; - [super viewDidMoveToWindow]; -} - -- (BOOL)_scrollOverflowInDirection:(ScrollDirection)direction granularity:(ScrollGranularity)granularity -{ - // scrolling overflows is only applicable if we're dealing with an WebHTMLView - if (![[self documentView] isKindOfClass:[WebHTMLView class]]) - return NO; - Frame* frame = core([self webFrame]); - if (!frame) - return NO; - return frame->eventHandler()->scrollOverflow(direction, granularity); -} - - -- (BOOL)_isVerticalDocument -{ - Frame* coreFrame = [self _web_frame]; - if (!coreFrame) - return YES; - Document* document = coreFrame->document(); - if (!document) - return YES; - RenderObject* renderView = document->renderer(); - if (!renderView) - return YES; - return renderView->style()->isHorizontalWritingMode(); -} - -- (BOOL)_isFlippedDocument -{ - Frame* coreFrame = [self _web_frame]; - if (!coreFrame) - return NO; - Document* document = coreFrame->document(); - if (!document) - return NO; - RenderObject* renderView = document->renderer(); - if (!renderView) - return NO; - return renderView->style()->isFlippedBlocksWritingMode(); -} - -- (BOOL)_scrollToBeginningOfDocument -{ - if ([self _scrollOverflowInDirection:ScrollUp granularity:ScrollByDocument]) - return YES; - if (![self _isScrollable]) - return NO; - NSPoint point = [(NSView *)[[self _scrollView] documentView] frame].origin; - point.x += [[self _scrollView] scrollOrigin].x; - point.y += [[self _scrollView] scrollOrigin].y; - return [[self _contentView] _scrollTo:&point animate:YES]; -} - -- (BOOL)_scrollToEndOfDocument -{ - if ([self _scrollOverflowInDirection:ScrollDown granularity:ScrollByDocument]) - return YES; - if (![self _isScrollable]) - return NO; - NSRect frame = [(NSView *)[[self _scrollView] documentView] frame]; - - bool isVertical = [self _isVerticalDocument]; - bool isFlipped = [self _isFlippedDocument]; - - NSPoint point; - if (isVertical) { - if (!isFlipped) - point = NSMakePoint(frame.origin.x, NSMaxY(frame)); - else - point = NSMakePoint(frame.origin.x, NSMinY(frame)); - } else { - if (!isFlipped) - point = NSMakePoint(NSMaxX(frame), frame.origin.y); - else - point = NSMakePoint(NSMinX(frame), frame.origin.y); - } - - // Reset the position opposite to the block progression direction. - if (isVertical) - point.x += [[self _scrollView] scrollOrigin].x; - else - point.y += [[self _scrollView] scrollOrigin].y; - return [[self _contentView] _scrollTo:&point animate:YES]; -} - -- (void)scrollToBeginningOfDocument:(id)sender -{ - if ([self _scrollToBeginningOfDocument]) - return; - - if (WebFrameView *child = [self _largestScrollableChild]) { - if ([child _scrollToBeginningOfDocument]) - return; - } - [[self nextResponder] tryToPerform:@selector(scrollToBeginningOfDocument:) with:sender]; -} - -- (void)scrollToEndOfDocument:(id)sender -{ - if ([self _scrollToEndOfDocument]) - return; - - if (WebFrameView *child = [self _largestScrollableChild]) { - if ([child _scrollToEndOfDocument]) - return; - } - [[self nextResponder] tryToPerform:@selector(scrollToEndOfDocument:) with:sender]; -} - -- (void)_goBack -{ - [[self _webView] goBack]; -} - -- (void)_goForward -{ - [[self _webView] goForward]; -} - -- (BOOL)_scrollVerticallyBy:(float)delta -{ - // This method uses the secret method _scrollTo on NSClipView. - // It does that because it needs to know definitively whether scrolling was - // done or not to help implement the "scroll parent if we are at the limit" feature. - // In the presence of smooth scrolling, there's no easy way to tell if the method - // did any scrolling or not with the public API. - NSPoint point = [[self _contentView] bounds].origin; - point.y += delta; - return [[self _contentView] _scrollTo:&point animate:YES]; -} - -- (BOOL)_scrollHorizontallyBy:(float)delta -{ - NSPoint point = [[self _contentView] bounds].origin; - point.x += delta; - return [[self _contentView] _scrollTo:&point animate:YES]; -} - -- (float)_horizontalKeyboardScrollDistance -{ - // Arrow keys scroll the same distance that clicking the scroll arrow does. - return [[self _scrollView] horizontalLineScroll]; -} - -- (float)_horizontalPageScrollDistance -{ - float width = [[self _contentView] bounds].size.width; - return max<float>(width * Scrollbar::minFractionToStepWhenPaging(), width - Scrollbar::maxOverlapBetweenPages()); -} - -- (BOOL)_pageVertically:(BOOL)up -{ - if ([self _scrollOverflowInDirection:up ? ScrollUp : ScrollDown granularity:ScrollByPage]) - return YES; - - if (![self _isScrollable]) - return [[self _largestScrollableChild] _pageVertically:up]; - - float delta = [self _verticalPageScrollDistance]; - return [self _scrollVerticallyBy:up ? -delta : delta]; -} - -- (BOOL)_pageHorizontally:(BOOL)left -{ - if ([self _scrollOverflowInDirection:left ? ScrollLeft : ScrollRight granularity:ScrollByPage]) - return YES; - - if (![self _isScrollable]) - return [[self _largestScrollableChild] _pageHorizontally:left]; - - float delta = [self _horizontalPageScrollDistance]; - return [self _scrollHorizontallyBy:left ? -delta : delta]; -} - -- (BOOL)_pageInBlockProgressionDirection:(BOOL)forward -{ - // Determine whether we're calling _pageVertically or _pageHorizontally. - BOOL isVerticalDocument = [self _isVerticalDocument]; - BOOL isFlippedBlock = [self _isFlippedDocument]; - if (isVerticalDocument) - return [self _pageVertically:isFlippedBlock ? !forward : forward]; - return [self _pageHorizontally:isFlippedBlock ? !forward : forward]; -} - -- (BOOL)_scrollLineVertically:(BOOL)up -{ - if ([self _scrollOverflowInDirection:up ? ScrollUp : ScrollDown granularity:ScrollByLine]) - return YES; - - if (![self _isScrollable]) - return [[self _largestScrollableChild] _scrollLineVertically:up]; - - float delta = [self _verticalKeyboardScrollDistance]; - return [self _scrollVerticallyBy:up ? -delta : delta]; -} - -- (BOOL)_scrollLineHorizontally:(BOOL)left -{ - if ([self _scrollOverflowInDirection:left ? ScrollLeft : ScrollRight granularity:ScrollByLine]) - return YES; - - if (![self _isScrollable]) - return [[self _largestScrollableChild] _scrollLineHorizontally:left]; - - float delta = [self _horizontalKeyboardScrollDistance]; - return [self _scrollHorizontallyBy:left ? -delta : delta]; -} - -- (void)scrollPageUp:(id)sender -{ - if (![self _pageInBlockProgressionDirection:YES]) { - // If we were already at the top, tell the next responder to scroll if it can. - [[self nextResponder] tryToPerform:@selector(scrollPageUp:) with:sender]; - } -} - -- (void)scrollPageDown:(id)sender -{ - if (![self _pageInBlockProgressionDirection:NO]) { - // If we were already at the bottom, tell the next responder to scroll if it can. - [[self nextResponder] tryToPerform:@selector(scrollPageDown:) with:sender]; - } -} - -- (void)scrollLineUp:(id)sender -{ - if (![self _scrollLineVertically:YES]) - [[self nextResponder] tryToPerform:@selector(scrollLineUp:) with:sender]; -} - -- (void)scrollLineDown:(id)sender -{ - if (![self _scrollLineVertically:NO]) - [[self nextResponder] tryToPerform:@selector(scrollLineDown:) with:sender]; -} - -- (BOOL)_firstResponderIsFormControl -{ - NSResponder *firstResponder = [[self window] firstResponder]; - - // WebHTMLView is an NSControl subclass these days, but it's not a form control - if ([firstResponder isKindOfClass:[WebHTMLView class]]) { - return NO; - } - return [firstResponder isKindOfClass:[NSControl class]]; -} - -- (void)keyDown:(NSEvent *)event -{ - // Implement common browser behaviors for all kinds of content. - - // FIXME: This is not a good time to execute commands for WebHTMLView. We should run these at the time commands sent by key bindings - // are executed for consistency. - // This doesn't work automatically because most of the keys handled here are translated into moveXXX commands, which are not handled - // by Editor when focus is not in editable content. - - NSString *characters = [event characters]; - int index, count; - BOOL callSuper = YES; - Frame* coreFrame = [self _web_frame]; - BOOL maintainsBackForwardList = coreFrame && static_cast<BackForwardListImpl*>(coreFrame->page()->backForwardList())->enabled() ? YES : NO; - - count = [characters length]; - for (index = 0; index < count; ++index) { - switch ([characters characterAtIndex:index]) { - case NSDeleteCharacter: - if (!maintainsBackForwardList || ![[[self _webView] preferences] backspaceKeyNavigationEnabled]) { - callSuper = YES; - break; - } - // This odd behavior matches some existing browsers, - // including Windows IE - if ([event modifierFlags] & NSShiftKeyMask) { - [self _goForward]; - } else { - [self _goBack]; - } - callSuper = NO; - break; - case SpaceKey: - // Checking for a control will allow events to percolate - // correctly when the focus is on a form control and we - // are in full keyboard access mode. - if ((![self allowsScrolling] && ![self _largestScrollableChild]) || [self _firstResponderIsFormControl]) { - callSuper = YES; - break; - } - if ([event modifierFlags] & NSShiftKeyMask) { - [self scrollPageUp:nil]; - } else { - [self scrollPageDown:nil]; - } - callSuper = NO; - break; - case NSPageUpFunctionKey: - if (![self allowsScrolling] && ![self _largestScrollableChild]) { - callSuper = YES; - break; - } - [self scrollPageUp:nil]; - callSuper = NO; - break; - case NSPageDownFunctionKey: - if (![self allowsScrolling] && ![self _largestScrollableChild]) { - callSuper = YES; - break; - } - [self scrollPageDown:nil]; - callSuper = NO; - break; - case NSHomeFunctionKey: - if (![self allowsScrolling] && ![self _largestScrollableChild]) { - callSuper = YES; - break; - } - [self scrollToBeginningOfDocument:nil]; - callSuper = NO; - break; - case NSEndFunctionKey: - if (![self allowsScrolling] && ![self _largestScrollableChild]) { - callSuper = YES; - break; - } - [self scrollToEndOfDocument:nil]; - callSuper = NO; - break; - case NSUpArrowFunctionKey: - // We don't handle shifted or control-arrow keys here, so let super have a chance. - if ([event modifierFlags] & (NSShiftKeyMask | NSControlKeyMask)) { - callSuper = YES; - break; - } - if ((![self allowsScrolling] && ![self _largestScrollableChild]) || - [[[self window] firstResponder] isKindOfClass:[NSPopUpButton class]]) { - // Let arrow keys go through to pop up buttons - // <rdar://problem/3455910>: hitting up or down arrows when focus is on a - // pop-up menu should pop the menu - callSuper = YES; - break; - } - if ([event modifierFlags] & NSCommandKeyMask) { - [self scrollToBeginningOfDocument:nil]; - } else if ([event modifierFlags] & NSAlternateKeyMask) { - [self scrollPageUp:nil]; - } else { - [self scrollLineUp:nil]; - } - callSuper = NO; - break; - case NSDownArrowFunctionKey: - // We don't handle shifted or control-arrow keys here, so let super have a chance. - if ([event modifierFlags] & (NSShiftKeyMask | NSControlKeyMask)) { - callSuper = YES; - break; - } - if ((![self allowsScrolling] && ![self _largestScrollableChild]) || - [[[self window] firstResponder] isKindOfClass:[NSPopUpButton class]]) { - // Let arrow keys go through to pop up buttons - // <rdar://problem/3455910>: hitting up or down arrows when focus is on a - // pop-up menu should pop the menu - callSuper = YES; - break; - } - if ([event modifierFlags] & NSCommandKeyMask) { - [self scrollToEndOfDocument:nil]; - } else if ([event modifierFlags] & NSAlternateKeyMask) { - [self scrollPageDown:nil]; - } else { - [self scrollLineDown:nil]; - } - callSuper = NO; - break; - case NSLeftArrowFunctionKey: - // We don't handle shifted or control-arrow keys here, so let super have a chance. - if ([event modifierFlags] & (NSShiftKeyMask | NSControlKeyMask)) { - callSuper = YES; - break; - } - // Check back/forward related keys. - if ([event modifierFlags] & NSCommandKeyMask) { - if (!maintainsBackForwardList) { - callSuper = YES; - break; - } - [self _goBack]; - } else { - // Now check scrolling related keys. - if ((![self allowsScrolling] && ![self _largestScrollableChild])) { - callSuper = YES; - break; - } - - if ([event modifierFlags] & NSAlternateKeyMask) { - [self _pageHorizontally:YES]; - } else { - [self _scrollLineHorizontally:YES]; - } - } - callSuper = NO; - break; - case NSRightArrowFunctionKey: - // We don't handle shifted or control-arrow keys here, so let super have a chance. - if ([event modifierFlags] & (NSShiftKeyMask | NSControlKeyMask)) { - callSuper = YES; - break; - } - // Check back/forward related keys. - if ([event modifierFlags] & NSCommandKeyMask) { - if (!maintainsBackForwardList) { - callSuper = YES; - break; - } - [self _goForward]; - } else { - // Now check scrolling related keys. - if ((![self allowsScrolling] && ![self _largestScrollableChild])) { - callSuper = YES; - break; - } - - if ([event modifierFlags] & NSAlternateKeyMask) { - [self _pageHorizontally:NO]; - } else { - [self _scrollLineHorizontally:NO]; - } - } - callSuper = NO; - break; - } - } - - if (callSuper) { - [super keyDown:event]; - } else { - // if we did something useful, get the cursor out of the way - [NSCursor setHiddenUntilMouseMoves:YES]; - } -} - -- (NSView *)_webcore_effectiveFirstResponder -{ - NSView *view = [self documentView]; - return view ? [view _webcore_effectiveFirstResponder] : [super _webcore_effectiveFirstResponder]; -} - -- (BOOL)canPrintHeadersAndFooters -{ - NSView *documentView = [[self _scrollView] documentView]; - if ([documentView respondsToSelector:@selector(canPrintHeadersAndFooters)]) { - return [(id)documentView canPrintHeadersAndFooters]; - } - return NO; -} - -- (NSPrintOperation *)printOperationWithPrintInfo:(NSPrintInfo *)printInfo -{ - NSView *documentView = [[self _scrollView] documentView]; - if (!documentView) { - return nil; - } - if ([documentView respondsToSelector:@selector(printOperationWithPrintInfo:)]) { - return [(id)documentView printOperationWithPrintInfo:printInfo]; - } - return [NSPrintOperation printOperationWithView:documentView printInfo:printInfo]; -} - -- (BOOL)documentViewShouldHandlePrint -{ - NSView *documentView = [[self _scrollView] documentView]; - if (documentView && [documentView respondsToSelector:@selector(documentViewShouldHandlePrint)]) - return [(id)documentView documentViewShouldHandlePrint]; - - return NO; -} - -- (void)printDocumentView -{ - NSView *documentView = [[self _scrollView] documentView]; - if (documentView && [documentView respondsToSelector:@selector(printDocumentView)]) - [(id)documentView printDocumentView]; -} - -@end - -@implementation WebFrameView (WebPrivate) - -- (float)_area -{ - NSRect frame = [self frame]; - return frame.size.height * frame.size.width; -} - -- (BOOL)_isScrollable -{ - WebDynamicScrollBarsView *scrollView = [self _scrollView]; - return [scrollView horizontalScrollingAllowed] || [scrollView verticalScrollingAllowed]; -} - -- (WebFrameView *)_largestScrollableChild -{ - WebFrameView *largest = nil; - NSArray *frameChildren = [[self webFrame] childFrames]; - - unsigned i; - for (i=0; i < [frameChildren count]; i++) { - WebFrameView *childFrameView = [[frameChildren objectAtIndex:i] frameView]; - WebFrameView *scrollableFrameView = [childFrameView _isScrollable] ? childFrameView : [childFrameView _largestScrollableChild]; - if (!scrollableFrameView) - continue; - - // Some ads lurk in child frames of zero width and height, see radar 4406994. These don't count as scrollable. - // Maybe someday we'll discover that this minimum area check should be larger, but this covers the known cases. - float area = [scrollableFrameView _area]; - if (area < 1.0) - continue; - - if (!largest || (area > [largest _area])) { - largest = scrollableFrameView; - } - } - - return largest; -} - -- (BOOL)_hasScrollBars -{ - // FIXME: This method was used by Safari 4.0.x and older versions, but has not been used by any other WebKit - // clients to my knowledge, and will not be used by future versions of Safari. It can probably be removed - // once we no longer need to keep nightly WebKit builds working with Safari 4.0.x and earlier. - NSScrollView *scrollView = [self _scrollView]; - return [scrollView hasHorizontalScroller] || [scrollView hasVerticalScroller]; -} - -- (WebFrameView *)_largestChildWithScrollBars -{ - // FIXME: This method was used by Safari 4.0.x and older versions, but has not been used by any other WebKit - // clients to my knowledge, and will not be used by future versions of Safari. It can probably be removed - // once we no longer need to keep nightly WebKit builds working with Safari 4.0.x and earlier. - WebFrameView *largest = nil; - NSArray *frameChildren = [[self webFrame] childFrames]; - - unsigned i; - for (i=0; i < [frameChildren count]; i++) { - WebFrameView *childFrameView = [[frameChildren objectAtIndex:i] frameView]; - WebFrameView *scrollableFrameView = [childFrameView _hasScrollBars] ? childFrameView : [childFrameView _largestChildWithScrollBars]; - if (!scrollableFrameView) - continue; - - // Some ads lurk in child frames of zero width and height, see radar 4406994. These don't count as scrollable. - // Maybe someday we'll discover that this minimum area check should be larger, but this covers the known cases. - float area = [scrollableFrameView _area]; - if (area < 1.0) - continue; - - if (!largest || (area > [largest _area])) { - largest = scrollableFrameView; - } - } - - return largest; -} - -- (NSClipView *)_contentView -{ - return [[self _scrollView] contentView]; -} - -- (Class)_customScrollViewClass -{ - if ([_private->frameScrollView class] == [WebDynamicScrollBarsView class]) - return nil; - return [_private->frameScrollView class]; -} - -- (void)_setCustomScrollViewClass:(Class)customClass -{ - if (!customClass) - customClass = [WebDynamicScrollBarsView class]; - ASSERT([customClass isSubclassOfClass:[WebDynamicScrollBarsView class]]); - if (customClass == [_private->frameScrollView class]) - return; - if (![customClass isSubclassOfClass:[WebDynamicScrollBarsView class]]) - return; - - WebDynamicScrollBarsView *oldScrollView = _private->frameScrollView; // already retained - NSView <WebDocumentView> *documentView = [[self documentView] retain]; - - WebDynamicScrollBarsView *scrollView = [[customClass alloc] initWithFrame:[oldScrollView frame]]; - [scrollView setContentView:[[[WebClipView alloc] initWithFrame:[scrollView bounds]] autorelease]]; - [scrollView setDrawsBackground:[oldScrollView drawsBackground]]; - [scrollView setHasVerticalScroller:[oldScrollView hasVerticalScroller]]; - [scrollView setHasHorizontalScroller:[oldScrollView hasHorizontalScroller]]; - [scrollView setAutoresizingMask:[oldScrollView autoresizingMask]]; - [scrollView setLineScroll:[oldScrollView lineScroll]]; - [self addSubview:scrollView]; - - // don't call our overridden version here; we need to make the standard NSView link between us - // and our subview so that previousKeyView and previousValidKeyView work as expected. This works - // together with our becomeFirstResponder and setNextKeyView overrides. - [super setNextKeyView:scrollView]; - - _private->frameScrollView = scrollView; - - [self _setDocumentView:documentView]; - [self _install]; - - [oldScrollView removeFromSuperview]; - [oldScrollView release]; - [documentView release]; -} - -@end |