forked from mirrors/gecko-dev
859f9b27db
We've tried to give `nsFileControlFrame` its own frame type "FileControl", but it caused a crash and we revert its frame type back to "Block" in Bug 1825623. That prevents the crash, but the frame tree is not correct since `nsFileControlFrame` will have `nsBlockFrame` as its next-in-flow. The proper way to fix the crash is disallowing the form control frame to split, similar to what we did for `nsTextControlFrame` in https://searchfox.org/mozilla-central/rev/fc76676f61ee37b4c5420649cad6677164a29405/layout/forms/nsTextControlFrame.cpp#670 This patch doesn't mean to promote frame type usage, but it might help the broader frame type audit in the future once we switch frame type to QueryFrame in bug 1555477. Note this patch might have potential behavior changes since calling `IsBlockFrame()` on `nsFileControlFrame` now returns `false` instead of `true`. However, we have other concrete frames such as `nsMathMLmathBlockFrame`, `nsSelectsAreaFrame`, etc. which have frame type "Block", and callers who need to check `nsBlockFrame` and its subclasses are probably already using `IsBlockFrameOrSubclass()`. Differential Revision: https://phabricator.services.mozilla.com/D212188
141 lines
4.1 KiB
C++
141 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsFileControlFrame_h___
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#define nsFileControlFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsBlockFrame.h"
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#include "nsIFormControlFrame.h"
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#include "nsIDOMEventListener.h"
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#include "nsIAnonymousContentCreator.h"
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#include "nsCOMPtr.h"
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namespace mozilla::dom {
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class FileList;
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class BlobImpl;
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class DataTransfer;
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} // namespace mozilla::dom
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class nsFileControlFrame final : public nsBlockFrame,
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public nsIFormControlFrame,
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public nsIAnonymousContentCreator {
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using Element = mozilla::dom::Element;
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public:
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsFileControlFrame)
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explicit nsFileControlFrame(ComputedStyle* aStyle,
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nsPresContext* aPresContext);
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void Init(nsIContent* aContent, nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override;
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void Reflow(nsPresContext* aPresContext, ReflowOutput& aReflowOutput,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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// nsIFormControlFrame
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nsresult SetFormProperty(nsAtom* aName, const nsAString& aValue) override;
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void SetFocus(bool aOn, bool aRepaint) override;
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void Destroy(DestroyContext&) override;
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#ifdef DEBUG_FRAME_DUMP
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nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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void ElementStateChanged(mozilla::dom::ElementState aStates) override;
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// nsIAnonymousContentCreator
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nsresult CreateAnonymousContent(nsTArray<ContentInfo>&) override;
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void AppendAnonymousContentTo(nsTArray<nsIContent*>&,
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uint32_t aFilter) override;
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#ifdef ACCESSIBILITY
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mozilla::a11y::AccType AccessibleType() override;
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#endif
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protected:
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class MouseListener;
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friend class MouseListener;
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class MouseListener : public nsIDOMEventListener {
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public:
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NS_DECL_ISUPPORTS
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explicit MouseListener(nsFileControlFrame* aFrame) : mFrame(aFrame) {}
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void ForgetFrame() { mFrame = nullptr; }
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protected:
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virtual ~MouseListener() = default;
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nsFileControlFrame* mFrame;
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};
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class SyncDisabledStateEvent;
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friend class SyncDisabledStateEvent;
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class SyncDisabledStateEvent : public mozilla::Runnable {
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public:
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explicit SyncDisabledStateEvent(nsFileControlFrame* aFrame)
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: mozilla::Runnable("nsFileControlFrame::SyncDisabledStateEvent"),
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mFrame(aFrame) {}
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NS_IMETHOD Run() override {
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nsFileControlFrame* frame =
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static_cast<nsFileControlFrame*>(mFrame.GetFrame());
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NS_ENSURE_STATE(frame);
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frame->SyncDisabledState();
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return NS_OK;
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}
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private:
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WeakFrame mFrame;
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};
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class DnDListener : public MouseListener {
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public:
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explicit DnDListener(nsFileControlFrame* aFrame) : MouseListener(aFrame) {}
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// nsIDOMEventListener
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MOZ_CAN_RUN_SCRIPT_BOUNDARY
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NS_IMETHOD HandleEvent(mozilla::dom::Event* aEvent) override;
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nsresult GetBlobImplForWebkitDirectory(mozilla::dom::FileList* aFileList,
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mozilla::dom::BlobImpl** aBlobImpl);
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bool IsValidDropData(mozilla::dom::DataTransfer* aDataTransfer);
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bool CanDropTheseFiles(mozilla::dom::DataTransfer* aDataTransfer,
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bool aSupportsMultiple);
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};
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/**
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* The text box input.
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* @see nsFileControlFrame::CreateAnonymousContent
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*/
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RefPtr<Element> mTextContent;
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/**
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* The button to open a file or directory picker.
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* @see nsFileControlFrame::CreateAnonymousContent
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*/
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RefPtr<Element> mBrowseFilesOrDirs;
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/**
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* Drag and drop mouse listener.
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* This makes sure we don't get used after destruction.
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*/
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RefPtr<DnDListener> mMouseListener;
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protected:
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/**
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* Sync the disabled state of the content with anonymous children.
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*/
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void SyncDisabledState();
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};
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#endif // nsFileControlFrame_h___
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