@import <AppKit/AppKit.j>

@import "CPNotificationCenterHelper.j"


@implementation CPScrollViewTest : OJTestCase
{
}

- (void)setUp
{
    // This will init the global var CPApp which are used internally in the AppKit
    [[CPApplication alloc] init];
}

/*!
    Test that scroll views don't generate bad layouts when very small.
*/
- (void)testZeroSize
{
    var scrollView = [[CPScrollView alloc] initWithFrame:CGRectMakeZero()],
        documentView = [[CPView alloc] initWithFrame:CGRectMake(0, 0, 0, 0)];
    [scrollView setAutohidesScrollers:NO];
    [scrollView setDocumentView:documentView];
    [scrollView setScrollerStyle:CPScrollerStyleLegacy];
    // If the layout operation leads to setKnobProportion:0/0 this will crash.
    [[scrollView horizontalScroller] layoutSubviews];
    [[scrollView verticalScroller] layoutSubviews];
}

- (void)testBothScrollersVisible
{
    var scrollView = [[CPScrollView alloc] initWithFrame:CGRectMake(0.0, 0.0, 100.0, 100.0)];

    [scrollView setAutohidesScrollers:NO];
    [scrollView setHasHorizontalScroller:YES];
    [scrollView setHasVerticalScroller:YES];

    var documentView = [[CPView alloc] init];

    [scrollView setDocumentView:documentView];

    // Test document view size smaller than scroll view size.
    [documentView setFrameSize:CGSizeMake(50.0, 50.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:NO];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:NO];

    [self assert:[[scrollView verticalScroller] isHidden] equals:NO];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:NO];

    // Test document view size much larger than scroll view size.
    [documentView setFrameSize:CGSizeMake(1000.0, 1000.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:NO];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:YES];

    [self assert:[[scrollView verticalScroller] isHidden] equals:NO];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:YES];

    // Test document view size much taller than scroll view size.
    [documentView setFrameSize:CGSizeMake(50.0, 1000.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:NO];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:NO];

    [self assert:[[scrollView verticalScroller] isHidden] equals:NO];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:YES];

    // Test document view size much wider than scroll view size.
    [documentView setFrameSize:CGSizeMake(1000.0, 50.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:NO];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:YES];

    [self assert:[[scrollView verticalScroller] isHidden] equals:NO];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:NO];

    // Test document view size equal to scroll view size.
    [documentView setFrameSize:CGSizeMake(100.0, 100.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:NO];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:YES];

    [self assert:[[scrollView verticalScroller] isHidden] equals:NO];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:YES];

    // Test document view size taller than scroll view size only because of scrollers.
    [documentView setFrameSize:CGSizeMake(50.0, 100.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:NO];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:NO];

    [self assert:[[scrollView verticalScroller] isHidden] equals:NO];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:YES];

    // Test document view size wider than scroll view size only because of scrollers.
    [documentView setFrameSize:CGSizeMake(100.0, 50.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:NO];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:YES];

    [self assert:[[scrollView verticalScroller] isHidden] equals:NO];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:NO];

    // Test document view size exactly the right size relative to the scroll view size.
    [documentView setFrameSize:CGSizeMake(100.0 - 17.0, 100.0 - 17.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:NO];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:NO];

    [self assert:[[scrollView verticalScroller] isHidden] equals:NO];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:NO];
}

- (void)testAutoHidesScrollers
{
    var scrollView = [[CPScrollView alloc] initWithFrame:CGRectMake(0.0, 0.0, 100.0, 100.0)];

    [scrollView setAutohidesScrollers:YES];
    [scrollView setHasHorizontalScroller:YES];
    [scrollView setHasVerticalScroller:YES];

    var documentView = [[CPView alloc] init];

    [scrollView setDocumentView:documentView];

    // Test document view size smaller than scroll view size.
    [documentView setFrameSize:CGSizeMake(50.0, 50.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:YES];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:NO];

    [self assert:[[scrollView verticalScroller] isHidden] equals:YES];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:NO];

    // Test document view size much larger than scroll view size.
    [documentView setFrameSize:CGSizeMake(1000.0, 1000.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:NO];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:YES];

    [self assert:[[scrollView verticalScroller] isHidden] equals:NO];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:YES];

    // Test document view size much taller than scroll view size.
    [documentView setFrameSize:CGSizeMake(50.0, 1000.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:YES];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:NO];

    [self assert:[[scrollView verticalScroller] isHidden] equals:NO];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:YES];

    // Test document view size much wider than scroll view size.
    [documentView setFrameSize:CGSizeMake(1000.0, 50.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:NO];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:YES];

    [self assert:[[scrollView verticalScroller] isHidden] equals:YES];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:NO];

    // Test document view size equal to scroll view size.
    [documentView setFrameSize:CGSizeMake(100.0, 100.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:YES];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:NO];

    [self assert:[[scrollView verticalScroller] isHidden] equals:YES];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:NO];

    // Test document view size taller than scroll view size only because of scrollers.
    [documentView setFrameSize:CGSizeMake(50.0, 100.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:YES];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:NO];

    [self assert:[[scrollView verticalScroller] isHidden] equals:YES];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:NO];

    // Test document view size wider than scroll view size only because of scrollers.
    [documentView setFrameSize:CGSizeMake(100.0, 50.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:YES];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:NO];

    [self assert:[[scrollView verticalScroller] isHidden] equals:YES];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:NO];

    // Test document view size exactly the right size relative to the scroll view size.
    [documentView setFrameSize:CGSizeMake(100.0 - 17.0, 100.0 - 17.0)];

    [self assert:[[scrollView horizontalScroller] isHidden] equals:YES];
    [self assert:[[scrollView horizontalScroller] isEnabled] equals:NO];

    [self assert:[[scrollView verticalScroller] isHidden] equals:YES];
    [self assert:[[scrollView verticalScroller] isEnabled] equals:NO];
}

- (void)testSetContentView
{
    var scrollView = [[CPScrollView alloc] initWithFrame:CGRectMake(0.0, 0.0, 100.0, 100.0)],
        documentView = [[CPView alloc] initWithFrame:CGRectMake(0.0, 0.0, 400.0, 400.0)],
        replacementContentView = [[CPClipView alloc] initWithFrame:[scrollView _insetBounds]],
        replacementDocumentView = [[CPView alloc] initWithFrame:CGRectMake(0.0, 0.0, 400.0, 400.0)];

    [replacementContentView setDocumentView:replacementDocumentView];

    // Test the obvious condition that they aren't the same
    [self assert:replacementContentView notEqual:[scrollView contentView] message:@"contentView somehow equals the replacement"];

    // Test the obvious condition that the document view can be get/set
    [scrollView setDocumentView:documentView];
    [self assert:documentView equals:[scrollView documentView] message:@"documentView is not set as expected"];

    // Change the content view
    [scrollView setContentView:replacementContentView];

    // Test that the content view has been replaced
    [self assert:replacementContentView equals:[scrollView contentView] message:@"contentView was not replaced properly"];
    // and that the document view has been replaced
    [self assert:replacementDocumentView equals:[scrollView documentView] message:@"documentView was not replaced properly"];
}

- (void)testScrollRectToVisible
{
    var scrollView = [[CPScrollView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)],
        documentView = [[CPView alloc] initWithFrame:CGRectMake(0, 0, 1000, 1000)],
        textField1 = [CPTextField textFieldWithStringValue:@"Martin" placeholder:@"" width:10],
        textField2 = [CPTextField textFieldWithStringValue:@"Malte" placeholder:@"" width:10],
        textField2Size = CGSizeMakeCopy([textField2 bounds].size);

    [scrollView setDocumentView:documentView];

    [textField1 setFrameOrigin:CGPointMake(10, 10)];
    [textField2 setFrameOrigin:CGPointMake(500, 500)];

    [documentView addSubview:textField1];
    [documentView addSubview:textField2];

    var visibleRect = [documentView visibleRect],
        originalVisibleSize = CGSizeMakeCopy(visibleRect.size);

    // Make sure we are at the top left corner
    [self assertPoint:CGPointMake(0, 0) equals:visibleRect.origin message:@"VisibleRect origin not at top left corner"];

    // Make the second text field visible
    var hasScrolled = [textField2 scrollRectToVisible:[textField2 bounds]];

    [self assertTrue:hasScrolled];

    var visibleRectOriginShouldBeAt = CGPointMake(500 - originalVisibleSize.width + textField2Size.width, 500 - originalVisibleSize.height + textField2Size.height);

    visibleRect = [documentView visibleRect];

    // We should now have the text field in the lower right corner
    [self assertPoint:visibleRectOriginShouldBeAt equals:visibleRect.origin message:@"Second text field not at lower right corner in visible rect"];

    // Make the first text field visible again
    hasScrolled = [textField1 scrollRectToVisible:[textField1 bounds]];
    [self assertTrue:hasScrolled];

    visibleRect = [documentView visibleRect];

    // We should now be back at top left corner
    [self assertPoint:CGPointMake(10, 10) equals:visibleRect.origin message:@"VisibleRect origin not at top left corner again"];

    // Try to scroll again and it should not scroll
    hasScrolled = [textField1 scrollRectToVisible:[textField1 bounds]];
    [self assertFalse:hasScrolled];
}

- (void)testScrollRectToVisibleWithLargeRect
{
    var scrollView = [[CPScrollView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)],
        documentView = [[CPView alloc] initWithFrame:CGRectMake(0, 0, 1000, 1000)],
        view1 = [[CPView alloc] initWithFrame:CGRectMake(0, 0, 200, 200)],
        view2 = [[CPView alloc] initWithFrame:CGRectMake(500, 500, 200, 200)];

    [scrollView setDocumentView:documentView];

    [view1 setFrameOrigin:CGPointMake(0, 0)];
    [view2 setFrameOrigin:CGPointMake(500, 500)];

    [documentView addSubview:view1];
    [documentView addSubview:view2];

    var visibleRect = [documentView visibleRect];

    // Make sure we are at the top left corner
    [self assertPoint:CGPointMake(0, 0) equals:visibleRect.origin message:@"VisibleRect origin not at top left corner"];

    // Make the second view visible
    var hasScrolled = [view2 scrollRectToVisible:[view2 bounds]];

    [self assertTrue:hasScrolled];

    visibleRect = [documentView visibleRect];

    // We should now have the origin of view2 in the upper left corner
    [self assertPoint:CGPointMake(500, 500) equals:visibleRect.origin message:@"Origin of second view not at upper left corner in visible rect"];

    // Make the first view  visible again
    hasScrolled = [view1 scrollRectToVisible:[view1 bounds]];
    [self assertTrue:hasScrolled];

    visibleRect = [documentView visibleRect];

    var visibleRectOriginShouldBeAt = CGPointMake(200 - visibleRect.size.width, 200 - visibleRect.size.height);

    // We should now be back almost at top left corner except that the lower right corner of the rect should be at the lower right corner of the visible rect.
    [self assertPoint:visibleRectOriginShouldBeAt equals:visibleRect.origin message:@"VisibleRect origin not at top left corner again"];

    // Try to scroll again and it should not scroll even as some parts are outside the visible rect
    hasScrolled = [view1 scrollRectToVisible:[view1 bounds]];
    [self assertFalse:hasScrolled];
}

-(void)testNotificationsRegistered
{
    var scrollView = [[CPScrollView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)],
        theWindow = [[CPWindow alloc] initWithContentRect:CGRectMake(0.0, 0.0, 1024.0, 768.0)
                                                styleMask:CPWindowNotSizable];

    [self assert:[CPNotificationCenterHelper registeredNotificationsForObserver:scrollView] equals:[] message:@"Notications registered for the scrollView in the notification center are wrong -1-"];

    [[theWindow contentView] addSubview:scrollView];
    [self assert:[CPNotificationCenterHelper registeredNotificationsForObserver:scrollView] equals:[@"CPScrollerStyleGlobalChangeNotification", @"_CPWindowDidChangeFirstResponderNotification"] message:@"Notications registered for the scrollView in the notification center are wrong -2-"];

    [[theWindow contentView] addSubview:scrollView];
    [self assert:[CPNotificationCenterHelper registeredNotificationsForObserver:scrollView] equals:[@"CPScrollerStyleGlobalChangeNotification", @"_CPWindowDidChangeFirstResponderNotification"] message:@"Notications registered for the scrollView in the notification center are wrong -3-"];

    [scrollView removeFromSuperview];
    [self assert:[CPNotificationCenterHelper registeredNotificationsForObserver:scrollView] equals:[] message:@"Notications registered for the scrollView in the notification center are wrong -4-"];
}

- (void)testDocumentVisibleRect
{
    var theWindow = [[CPWindow alloc] initWithContentRect:CGRectMake(0.0, 0.0, 1024.0, 768.0)
                                        styleMask:CPWindowNotSizable],
        windowView    = [theWindow contentView],
        aScrollView   = [[CPScrollView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)],
        aDocumentView = [[CPView alloc]       initWithFrame:CGRectMake(0, 0, 200, 200)];

    [CPScrollView setGlobalScrollerStyle:CPScrollerStyleOverlay];

    [aScrollView setDocumentView:aDocumentView];
    [windowView addSubview:aScrollView];

    [self assertRect:CGRectMake(0, 0, 100, 100) equals:[aScrollView documentVisibleRect] message:@"documentVisibleRect is wrong in CPScrollView"];

    [aDocumentView setScaleSize:CGSizeMake(0.5, 0.5)];
    [self assertRect:CGRectMake(0, 0, 200, 200) equals:[aScrollView documentVisibleRect] message:@"documentVisibleRect is wrong in CPScrollView after scaling"];

    [aDocumentView setScaleSize:CGSizeMake(1, 1)];
    [aDocumentView scrollRectToVisible:CGRectMake(120, 120, 20, 20)];
    [self assertRect:CGRectMake(40, 40, 100, 100) equals:[aScrollView documentVisibleRect] message:@"documentVisibleRect is wrong in CPScrollView"];

    [aDocumentView setScaleSize:CGSizeMake(0.5, 0.5)];
    [self assertRect:CGRectMake(80, 80, 200, 200) equals:[aScrollView documentVisibleRect] message:@"documentVisibleRect is wrong in CPScrollView"];
}

- (void)assertPoint:(CGPoint)expected equals:(CGPoint)actual message:(CPString)message
{
    [self assert:expected.x equals:actual.x message:@"X: " + message];
    [self assert:expected.y equals:actual.y message:@"Y: " + message];
}

- (void)assertSize:(CGSize)expected equals:(CGSize)actual message:(CPString)message
{
    [self assert:expected.width equals:actual.width message:@"Width: " + message];
    [self assert:expected.height equals:actual.height message:@"Height: " + message];
}

- (void)assertRect:(CGRect)expected equals:(CGRect)actual message:(CPString)message
{
    [self assertPoint:expected.origin equals:actual.origin message:message]
    [self assertSize:expected.size equals:actual.size message:message]
}

@end