/*
 * Copyright (C) 2014 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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 <WebKit/WKWebView.h>

#if WK_API_ENABLED

typedef NS_OPTIONS(NSUInteger, _WKRenderingProgressEvents) {
    _WKRenderingProgressEventFirstLayout = 1 << 0,
    _WKRenderingProgressEventFirstPaintWithSignificantArea = 1 << 2,
} WK_ENUM_AVAILABLE(10_10, 8_0);

typedef NS_ENUM(NSInteger, _WKPaginationMode) {
    _WKPaginationModeUnpaginated,
    _WKPaginationModeLeftToRight,
    _WKPaginationModeRightToLeft,
    _WKPaginationModeTopToBottom,
    _WKPaginationModeBottomToTop,
} WK_ENUM_AVAILABLE(10_10, 8_0);

typedef NS_OPTIONS(NSUInteger, _WKFindOptions) {
    _WKFindOptionsCaseInsensitive = 1 << 0,
    _WKFindOptionsAtWordStarts = 1 << 1,
    _WKFindOptionsTreatMedialCapitalAsWordStart = 1 << 2,
    _WKFindOptionsBackwards = 1 << 3,
    _WKFindOptionsWrapAround = 1 << 4,
    _WKFindOptionsShowOverlay = 1 << 5,
    _WKFindOptionsShowFindIndicator = 1 << 6,
    _WKFindOptionsShowHighlight = 1 << 7,
    _WKFindOptionsDetermineMatchIndex = 1 << 8,
} WK_ENUM_AVAILABLE(10_10, 8_0);

@class WKBrowsingContextHandle;
@class _WKRemoteObjectRegistry;
@class _WKWebViewPrintFormatter;

@protocol WKHistoryDelegatePrivate;
@protocol _WKFindDelegate;
@protocol _WKFormDelegate;

@interface WKWebView (WKPrivate)

// FIXME: This should return a _WKRemoteObjectRegistry *.
@property (nonatomic, readonly) id _remoteObjectRegistry;
@property (nonatomic, readonly) WKBrowsingContextHandle *_handle;

@property (nonatomic, setter=_setObservedRenderingProgressEvents:) _WKRenderingProgressEvents _observedRenderingProgressEvents;

@property (nonatomic, weak, setter=_setHistoryDelegate:) id <WKHistoryDelegatePrivate> _historyDelegate;

@property (nonatomic, readonly) NSURL *_unreachableURL;

- (void)_loadAlternateHTMLString:(NSString *)string baseURL:(NSURL *)baseURL forUnreachableURL:(NSURL *)unreachableURL;

- (WKNavigation *)_reload;

@property (nonatomic, readonly) NSArray *_certificateChain;
@property (nonatomic, readonly) NSURL *_committedURL;
@property (nonatomic, readonly) NSString *_MIMEType;

@property (copy, setter=_setApplicationNameForUserAgent:) NSString *_applicationNameForUserAgent;
@property (copy, setter=_setCustomUserAgent:) NSString *_customUserAgent;

@property (nonatomic, readonly) pid_t _webProcessIdentifier;

@property (nonatomic, readonly) NSData *_sessionState;
- (void)_restoreFromSessionState:(NSData *)sessionState;

@property (nonatomic, setter=_setAllowsRemoteInspection:) BOOL _allowsRemoteInspection;

@property (nonatomic, setter=_setAddsVisitedLinks:) BOOL _addsVisitedLinks;

- (void)_close;

#if TARGET_OS_IPHONE
// DERECATED: The setters of the three following function are deprecated, please use overrideLayoutParameters.
// Define the smallest size a page take with a regular viewport.
@property (nonatomic, setter=_setMinimumLayoutSizeOverride:) CGSize _minimumLayoutSizeOverride;
// Define the smallest size a page take with the minmal-ui viewport.
@property (nonatomic, setter=_setMinimumLayoutSizeOverrideForMinimalUI:) CGSize _minimumLayoutSizeOverrideForMinimalUI;
// Define the largest size the unobscured area can get for the current view bounds. This value is used to define viewport units.
@property (nonatomic, setter=_setMaximumUnobscuredSizeOverride:) CGSize _maximumUnobscuredSizeOverride;

@property (nonatomic, readonly) BOOL _usesMinimalUI;

// Define the inset of the scrollview unusable by the web page.
@property (nonatomic, setter=_setObscuredInsets:) UIEdgeInsets _obscuredInsets;

// Override the interface orientation. Clients using _beginAnimatedResizeWithUpdates: must update the interface orientation
// in the update block.
@property (nonatomic, setter=_setInterfaceOrientationOverride:) UIInterfaceOrientation _interfaceOrientationOverride;

@property (nonatomic, setter=_setBackgroundExtendsBeyondPage:) BOOL _backgroundExtendsBeyondPage;

// FIXME: Remove these three properties once we expose WKWebViewContentProvider as API.
@property (nonatomic, readonly, getter=_isDisplayingPDF) BOOL _displayingPDF;
@property (nonatomic, readonly) NSData *_dataForDisplayedPDF;
// FIXME: This can be removed once WKNavigation's response property is implemented.
@property (nonatomic, readonly) NSString *_suggestedFilenameForDisplayedPDF;

// The viewport meta tag width is negative if the value is not defined.
@property (nonatomic, readonly) CGFloat _viewportMetaTagWidth;

@property (nonatomic, readonly) _WKWebViewPrintFormatter *_webViewPrintFormatter;

- (void)_beginInteractiveObscuredInsetsChange;
- (void)_endInteractiveObscuredInsetsChange;

- (void)_beginAnimatedResizeWithUpdates:(void (^)(void))updateBlock;
- (void)_endAnimatedResize;

- (void)_snapshotRect:(CGRect)rectInViewCoordinates intoImageOfWidth:(CGFloat)imageWidth completionHandler:(void(^)(CGImageRef))completionHandler;

- (void)_overrideLayoutParametersWithMinimumLayoutSize:(CGSize)minimumLayoutSize minimumLayoutSizeForMinimalUI:(CGSize)minimumLayoutSizeForMinimalUI maximumUnobscuredSizeOverride:(CGSize)maximumUnobscuredSizeOverride;

- (UIView *)_viewForFindUI;

- (void)_setOverlaidAccessoryViewsInset:(CGSize)inset;

- (void)_killWebContentProcess;
- (void)_didRelaunchProcess;

#else
@property (readonly) NSColor *_pageExtendedBackgroundColor;
@property (nonatomic, setter=_setDrawsTransparentBackground:) BOOL _drawsTransparentBackground;
@property (nonatomic, setter=_setTopContentInset:) CGFloat _topContentInset;
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101000
@property (nonatomic, setter=_setAutomaticallyAdjustsContentInsets:) BOOL _automaticallyAdjustsContentInsets;
#endif
#endif

- (void)_getMainResourceDataWithCompletionHandler:(void (^)(NSData *, NSError *))completionHandler;
- (void)_getWebArchiveDataWithCompletionHandler:(void (^)(NSData *, NSError *))completionHandler;

@property (nonatomic, setter=_setPaginationMode:) _WKPaginationMode _paginationMode;
// Whether the column-break-{before,after} properties are respected instead of the
// page-break-{before,after} properties.
@property (nonatomic, setter=_setPaginationBehavesLikeColumns:) BOOL _paginationBehavesLikeColumns;
// Set to 0 to have the page length equal the view length.
@property (nonatomic, setter=_setPageLength:) CGFloat _pageLength;
@property (nonatomic, setter=_setGapBetweenPages:) CGFloat _gapBetweenPages;
@property (readonly) NSUInteger _pageCount;

@property (nonatomic, readonly) BOOL _supportsTextZoom;
@property (nonatomic, setter=_setTextZoomFactor:) double _textZoomFactor;
@property (nonatomic, setter=_setPageZoomFactor:) double _pageZoomFactor;

@property (nonatomic, weak, setter=_setFindDelegate:) id <_WKFindDelegate> _findDelegate;
- (void)_findString:(NSString *)string options:(_WKFindOptions)options maxCount:(NSUInteger)maxCount;
- (void)_countStringMatches:(NSString *)string options:(_WKFindOptions)options maxCount:(NSUInteger)maxCount;
- (void)_hideFindUI;

@property (nonatomic, weak, setter=_setFormDelegate:) id <_WKFormDelegate> _formDelegate;

@property (nonatomic, readonly, getter=_isDisplayingStandaloneImageDocument) BOOL _displayingStandaloneImageDocument;

@end

#endif