1/*
2 * Copyright (C) 2012 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "RenderDialog.h"
28
29#if ENABLE(DIALOG_ELEMENT)
30#include "FrameView.h"
31#include "LayoutRepainter.h"
32#include "RenderLayer.h"
33#include "RenderView.h"
34
35namespace WebCore {
36
37void RenderDialog::layout()
38{
39    StackStats::LayoutCheckPoint layoutCheckPoint;
40    LayoutRepainter repainter(*this, true);
41    LayoutStateMaintainer statePusher(view(), this, locationOffset(), hasTransform() || hasReflection() || style()->isFlippedBlocksWritingMode());
42
43    RenderBlock::layout();
44
45    RenderStyle* styleToUse = style();
46    if (styleToUse->position() != AbsolutePosition || !styleToUse->top().isAuto() || !styleToUse->bottom().isAuto()) {
47        statePusher.pop();
48        return;
49    }
50
51    // Adjust the dialog's position to be centered in or at the top of the viewport.
52    // FIXME: Figure out what to do in vertical writing mode.
53    FrameView* frameView = document()->view();
54    int scrollTop = frameView->scrollOffset().height();
55    FloatPoint absolutePoint(0, scrollTop);
56    int visibleHeight = frameView->visibleContentRect(ScrollableArea::IncludeScrollbars).height();
57    if (height() < visibleHeight)
58        absolutePoint.move(0, (visibleHeight - height()) / 2);
59    FloatPoint localPoint = containingBlock()->absoluteToLocal(absolutePoint);
60    LayoutUnit localTop = LayoutSize(localPoint.x(), localPoint.y()).height();
61    setY(localTop);
62
63    statePusher.pop();
64    // FIXME: Since there is always a layer here, repainter shouldn't be necessary. But without it, the dialog is sometimes not painted (see bug 90670).
65    repainter.repaintAfterLayout();
66}
67
68}
69
70#endif
71