NOT FOR REVIEW: Fullscreen WIP

third_party/WebKit/Source/core/layout/LayoutFullScreen.cpp

Index: third_party/WebKit/Source/core/layout/LayoutFullScreen.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutFullScreen.cpp b/third_party/WebKit/Source/core/layout/LayoutFullScreen.cpp
deleted file mode 100644
index 20b7d5c3750fa80ec8c39aa0b9416e2620f9ca71..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/layout/LayoutFullScreen.cpp
+++ /dev/null
@@ -1,221 +0,0 @@
-/*
- * Copyright (C) 2010 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 "core/layout/LayoutFullScreen.h"
-
-#include "core/dom/Fullscreen.h"
-#include "core/frame/FrameHost.h"
-#include "core/frame/VisualViewport.h"
-#include "core/layout/LayoutBlockFlow.h"
-#include "core/page/Page.h"
-
-#include "public/platform/WebScreenInfo.h"
-
-using namespace blink;
-
-class LayoutFullScreenPlaceholder final : public LayoutBlockFlow {
- public:
-  LayoutFullScreenPlaceholder(LayoutFullScreen* owner)
-      : LayoutBlockFlow(nullptr), m_owner(owner) {
-    setDocumentForAnonymous(&owner->document());
-  }
-
-  // Must call setStyleWithWritingModeOfParent() instead.
-  void setStyle(PassRefPtr<ComputedStyle>) = delete;
-
- private:
-  bool isOfType(LayoutObjectType type) const override {
-    return type == LayoutObjectLayoutFullScreenPlaceholder ||
-           LayoutBlockFlow::isOfType(type);
-  }
-  bool anonymousHasStylePropagationOverride() override { return true; }
-
-  void willBeDestroyed() override;
-  LayoutFullScreen* m_owner;
-};
-
-void LayoutFullScreenPlaceholder::willBeDestroyed() {
-  m_owner->resetPlaceholder();
-  LayoutBlockFlow::willBeDestroyed();
-}
-
-LayoutFullScreen::LayoutFullScreen()
-    : LayoutFlexibleBox(nullptr), m_placeholder(nullptr) {
-  setIsAtomicInlineLevel(false);
-}
-
-LayoutFullScreen* LayoutFullScreen::createAnonymous(Document* document) {
-  LayoutFullScreen* layoutObject = new LayoutFullScreen();
-  layoutObject->setDocumentForAnonymous(document);
-  return layoutObject;
-}
-
-void LayoutFullScreen::willBeDestroyed() {
-  if (m_placeholder) {
-    remove();
-    if (!m_placeholder->beingDestroyed())
-      m_placeholder->destroy();
-    DCHECK(!m_placeholder);
-  }
-
-  // LayoutObjects are unretained, so notify the document (which holds a pointer
-  // to a LayoutFullScreen) if its LayoutFullScreen is destroyed.
-  Fullscreen& fullscreen = Fullscreen::from(document());
-  if (fullscreen.fullScreenLayoutObject() == this)
-    fullscreen.fullScreenLayoutObjectDestroyed();
-
-  LayoutFlexibleBox::willBeDestroyed();
-}
-
-void LayoutFullScreen::updateStyle(LayoutObject* parent) {
-  RefPtr<ComputedStyle> fullscreenStyle = ComputedStyle::create();
-
-  // Create a stacking context:
-  fullscreenStyle->setZIndex(INT_MAX);
-  fullscreenStyle->setIsStackingContext(true);
-
-  fullscreenStyle->setFontDescription(FontDescription());
-  fullscreenStyle->font().update(nullptr);
-
-  fullscreenStyle->setDisplay(EDisplay::Flex);
-  fullscreenStyle->setJustifyContentPosition(ContentPositionCenter);
-  // TODO (lajava): Since the FullScrenn layout object is anonymous, its Default
-  // Alignment (align-items) value can't be used to resolve its children Self
-  // Alignment 'auto' values.
-  fullscreenStyle->setAlignItemsPosition(ItemPositionCenter);
-  fullscreenStyle->setFlexDirection(FlowColumn);
-
-  fullscreenStyle->setPosition(FixedPosition);
-  fullscreenStyle->setLeft(Length(0, blink::Fixed));
-  fullscreenStyle->setTop(Length(0, blink::Fixed));
-  IntSize viewportSize = document().page()->frameHost().visualViewport().size();
-  fullscreenStyle->setWidth(Length(viewportSize.width(), blink::Fixed));
-  fullscreenStyle->setHeight(Length(viewportSize.height(), blink::Fixed));
-
-  fullscreenStyle->setBackgroundColor(StyleColor(Color::black));
-
-  setStyleWithWritingModeOf(fullscreenStyle, parent);
-}
-
-void LayoutFullScreen::updateStyle() {
-  updateStyle(parent());
-}
-
-LayoutObject* LayoutFullScreen::wrapLayoutObject(LayoutObject* object,
-                                                 LayoutObject* parent,
-                                                 Document* document) {
-  // FIXME: We should not modify the structure of the layout tree during
-  // layout. crbug.com/370459
-  DeprecatedDisableModifyLayoutTreeStructureAsserts disabler;
-
-  LayoutFullScreen* fullscreenLayoutObject =
-      LayoutFullScreen::createAnonymous(document);
-  fullscreenLayoutObject->updateStyle(parent);
-  if (parent &&
-      !parent->isChildAllowed(fullscreenLayoutObject,
-                              fullscreenLayoutObject->styleRef())) {
-    fullscreenLayoutObject->destroy();
-    return nullptr;
-  }
-  if (object) {
-    // |object->parent()| can be null if the object is not yet attached
-    // to |parent|.
-    if (LayoutObject* parent = object->parent()) {
-      LayoutBlock* containingBlock = object->containingBlock();
-      DCHECK(containingBlock);
-      // Since we are moving the |object| to a new parent
-      // |fullscreenLayoutObject|, the line box tree underneath our
-      // |containingBlock| is not longer valid.
-      if (containingBlock->isLayoutBlockFlow())
-        toLayoutBlockFlow(containingBlock)->deleteLineBoxTree();
-
-      parent->addChildWithWritingModeOfParent(fullscreenLayoutObject, object);
-      object->remove();
-
-      // Always just do a full layout to ensure that line boxes get deleted
-      // properly.
-      // Because objects moved from |parent| to |fullscreenLayoutObject|, we
-      // want to make new line boxes instead of leaving the old ones around.
-      parent->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(
-          LayoutInvalidationReason::Fullscreen);
-      containingBlock
-          ->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(
-              LayoutInvalidationReason::Fullscreen);
-    }
-    fullscreenLayoutObject->addChild(object);
-    fullscreenLayoutObject
-        ->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(
-            LayoutInvalidationReason::Fullscreen);
-  }
-
-  DCHECK(document);
-  Fullscreen::from(*document).setFullScreenLayoutObject(fullscreenLayoutObject);
-  return fullscreenLayoutObject;
-}
-
-void LayoutFullScreen::unwrapLayoutObject() {
-  // FIXME: We should not modify the structure of the layout tree during
-  // layout. crbug.com/370459
-  DeprecatedDisableModifyLayoutTreeStructureAsserts disabler;
-
-  if (parent()) {
-    for (LayoutObject* child = firstChild(); child; child = firstChild()) {
-      // We have to clear the override size, because as a flexbox, we
-      // may have set one on the child, and we don't want to leave that
-      // lying around on the child.
-      if (child->isBox())
-        toLayoutBox(child)->clearOverrideSize();
-      child->remove();
-      parent()->addChild(child, this);
-      parent()->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(
-          LayoutInvalidationReason::Fullscreen);
-    }
-  }
-  if (placeholder())
-    placeholder()->remove();
-  remove();
-  destroy();
-}
-
-void LayoutFullScreen::createPlaceholder(PassRefPtr<ComputedStyle> style,
-                                         const LayoutRect& frameRect) {
-  if (style->width().isAuto())
-    style->setWidth(Length(frameRect.width(), Fixed));
-  if (style->height().isAuto())
-    style->setHeight(Length(frameRect.height(), Fixed));
-
-  if (!m_placeholder) {
-    m_placeholder = new LayoutFullScreenPlaceholder(this);
-    m_placeholder->setStyleWithWritingModeOfParent(std::move(style));
-    if (parent()) {
-      parent()->addChildWithWritingModeOfParent(m_placeholder, this);
-      parent()->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(
-          LayoutInvalidationReason::Fullscreen);
-    }
-  } else {
-    m_placeholder->setStyle(std::move(style));
-    m_placeholder->setStyleWithWritingModeOfParent(std::move(style));
-  }
-}