| /* |
| * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef HTMLFrameOwnerElement_h |
| #define HTMLFrameOwnerElement_h |
| |
| #include "core/CoreExport.h" |
| #include "core/dom/Document.h" |
| #include "core/frame/FrameOwner.h" |
| #include "core/html/HTMLElement.h" |
| #include "platform/heap/Handle.h" |
| #include "platform/scroll/ScrollTypes.h" |
| #include "platform/weborigin/SecurityPolicy.h" |
| #include "wtf/HashCountedSet.h" |
| |
| namespace blink { |
| |
| class LocalDOMWindow; |
| class ExceptionState; |
| class Frame; |
| class LayoutPart; |
| class Widget; |
| |
| class CORE_EXPORT HTMLFrameOwnerElement : public HTMLElement, public FrameOwner { |
| USING_GARBAGE_COLLECTED_MIXIN(HTMLFrameOwnerElement); |
| public: |
| ~HTMLFrameOwnerElement() override; |
| |
| Frame* contentFrame() const { return m_contentFrame; } |
| DOMWindow* contentWindow() const; |
| Document* contentDocument() const; |
| |
| void disconnectContentFrame(); |
| |
| // Most subclasses use LayoutPart (either LayoutEmbeddedObject or LayoutIFrame) |
| // except for HTMLObjectElement and HTMLEmbedElement which may return any |
| // LayoutObject when using fallback content. |
| LayoutPart* layoutPart() const; |
| |
| Document* getSVGDocument(ExceptionState&) const; |
| |
| virtual bool loadedNonEmptyDocument() const { return false; } |
| virtual void didLoadNonEmptyDocument() { } |
| |
| void setWidget(Widget*); |
| Widget* releaseWidget(); |
| Widget* ownedWidget() const; |
| |
| class UpdateSuspendScope { |
| STACK_ALLOCATED(); |
| public: |
| UpdateSuspendScope(); |
| ~UpdateSuspendScope(); |
| |
| private: |
| void performDeferredWidgetTreeOperations(); |
| }; |
| |
| // FrameOwner overrides: |
| void setContentFrame(Frame&) override; |
| void clearContentFrame() override; |
| void dispatchLoad() override; |
| SandboxFlags getSandboxFlags() const override { return m_sandboxFlags; } |
| void renderFallbackContent() override { } |
| ScrollbarMode scrollingMode() const override { return ScrollbarAuto; } |
| int marginWidth() const override { return -1; } |
| int marginHeight() const override { return -1; } |
| bool allowFullscreen() const override { return false; } |
| const WebVector<WebPermissionType>& delegatedPermissions() const override; |
| |
| DECLARE_VIRTUAL_TRACE(); |
| |
| protected: |
| HTMLFrameOwnerElement(const QualifiedName& tagName, Document&); |
| void setSandboxFlags(SandboxFlags); |
| |
| bool loadOrRedirectSubframe(const KURL&, const AtomicString& frameName, bool replaceCurrentItem); |
| |
| void disposeWidgetSoon(Widget*); |
| |
| private: |
| // Intentionally private to prevent redundant checks when the type is |
| // already HTMLFrameOwnerElement. |
| bool isLocal() const override { return true; } |
| bool isRemote() const override { return false; } |
| |
| bool isKeyboardFocusable() const override; |
| bool isFrameOwnerElement() const final { return true; } |
| |
| virtual ReferrerPolicy referrerPolicyAttribute() { return ReferrerPolicyDefault; } |
| |
| Member<Frame> m_contentFrame; |
| Member<Widget> m_widget; |
| SandboxFlags m_sandboxFlags; |
| }; |
| |
| DEFINE_ELEMENT_TYPE_CASTS(HTMLFrameOwnerElement, isFrameOwnerElement()); |
| |
| class SubframeLoadingDisabler { |
| STACK_ALLOCATED(); |
| public: |
| explicit SubframeLoadingDisabler(Node& root) : SubframeLoadingDisabler(&root) |
| { |
| } |
| |
| explicit SubframeLoadingDisabler(Node* root) |
| : m_root(root) |
| { |
| if (m_root) |
| disabledSubtreeRoots().add(m_root); |
| } |
| |
| ~SubframeLoadingDisabler() |
| { |
| if (m_root) |
| disabledSubtreeRoots().remove(m_root); |
| } |
| |
| static bool canLoadFrame(HTMLFrameOwnerElement& owner) |
| { |
| for (Node* node = &owner; node; node = node->parentOrShadowHostNode()) { |
| if (disabledSubtreeRoots().contains(node)) |
| return false; |
| } |
| return true; |
| } |
| |
| private: |
| using SubtreeRootSet = HeapHashCountedSet<Member<Node>>; |
| |
| CORE_EXPORT static SubtreeRootSet& disabledSubtreeRoots(); |
| |
| Member<Node> m_root; |
| }; |
| |
| DEFINE_TYPE_CASTS(HTMLFrameOwnerElement, FrameOwner, owner, owner->isLocal(), owner.isLocal()); |
| |
| } // namespace blink |
| |
| #endif // HTMLFrameOwnerElement_h |