/*
 * Copyright (C) 2016 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.
 */

#include "config.h"

#if PLATFORM(MAC)

#import "PlatformUtilities.h"
#import <WebKit/WKPreferencesPrivate.h>
#import <WebKit/WKWebViewConfigurationPrivate.h>
#import <WebKit/WKWebViewPrivate.h>
#import <wtf/RetainPtr.h>

static bool receivedLoadedMessage;
static bool receivedFullscreenChangeMessage;

@interface FullscreenStateChangeMessageHandler : NSObject <WKScriptMessageHandler>
@end

@implementation FullscreenStateChangeMessageHandler
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message
{
    NSString *bodyString = (NSString *)[message body];
    if ([bodyString isEqualToString:@"fullscreenchange"])
        receivedFullscreenChangeMessage = true;
    else if ([bodyString isEqualToString:@"load"])
        receivedLoadedMessage = true;
}
@end

namespace TestWebKitAPI {

TEST(Fullscreen, LayoutConstraints)
{
    RetainPtr<WKWebViewConfiguration> configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
    RetainPtr<WKWebView> webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 100, 100) configuration:configuration.get()]);
    [configuration preferences]._fullScreenEnabled = YES;
    RetainPtr<FullscreenStateChangeMessageHandler> handler = adoptNS([[FullscreenStateChangeMessageHandler alloc] init]);
    [[configuration userContentController] addScriptMessageHandler:handler.get() name:@"fullscreenStateChangeHandler"];

    RetainPtr<NSWindow> window = adoptNS([[NSWindow alloc] initWithContentRect:[webView frame] styleMask:NSWindowStyleMaskBorderless backing:NSBackingStoreBuffered defer:NO]);
    webView.get().translatesAutoresizingMaskIntoConstraints = NO;
    [[window contentView] addSubview:webView.get()];
    
    [[window contentView] addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"|-0-[webView]-0-|" options:0 metrics:nil views:@{@"webView" : webView.get()}]];

    [[window contentView] addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-0-[webView]-0-|" options:0 metrics:nil views:@{@"webView" : webView.get()}]];
    
    NSArray* originalConstraints = [[window contentView] constraints];
    
    NSURLRequest *request = [NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"FullscreenLayoutConstraints" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"]];
    [webView loadRequest:request];
    TestWebKitAPI::Util::run(&receivedLoadedMessage);

    NSEvent *event = [NSEvent mouseEventWithType:NSEventTypeLeftMouseDown location:NSMakePoint(5, 5) modifierFlags:0 timestamp:0 windowNumber:window.get().windowNumber context:0 eventNumber:0 clickCount:0 pressure:0];
    [webView mouseDown:event];

    TestWebKitAPI::Util::run(&receivedFullscreenChangeMessage);
    
    receivedFullscreenChangeMessage = false;
    
    NSEvent *exitFSEvent = [NSEvent mouseEventWithType:NSEventTypeLeftMouseDown location:NSMakePoint(5, 5) modifierFlags:0 timestamp:0 windowNumber:window.get().windowNumber context:0 eventNumber:0 clickCount:0 pressure:0];
    [webView mouseDown:exitFSEvent];
    
    TestWebKitAPI::Util::run(&receivedFullscreenChangeMessage);

    NSArray* finalConstraints = [[window contentView] constraints];
    ASSERT_TRUE([originalConstraints isEqual:finalConstraints]);
}
    
} // namespace TestWebKitAPI

#endif