nsFileControlFrame.h

Enable keyboard shortcuts

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef nsFileControlFrame_h___

#define nsFileControlFrame_h___

#include "mozilla/Attributes.h"

#include "nsBlockFrame.h"

#include "nsIDOMEventListener.h"

#include "nsIAnonymousContentCreator.h"

namespace mozilla::dom {

class FileList;

class BlobImpl;

class DataTransfer;

}  // namespace mozilla::dom

class nsFileControlFrame final : public nsBlockFrame,

                                 public nsIAnonymousContentCreator {

  using Element = mozilla::dom::Element;

 public:

  NS_DECL_QUERYFRAME

  NS_DECL_FRAMEARENA_HELPERS(nsFileControlFrame)

  explicit nsFileControlFrame(ComputedStyle* aStyle,

                              nsPresContext* aPresContext);

  void Init(nsIContent* aContent, nsContainerFrame* aParent,

            nsIFrame* aPrevInFlow) override;

  void Reflow(nsPresContext* aPresContext, ReflowOutput& aReflowOutput,

              const ReflowInput& aReflowInput,

              nsReflowStatus& aStatus) override;

  void SelectedFilesUpdated();

  void Destroy(DestroyContext&) override;

#ifdef DEBUG_FRAME_DUMP

  nsresult GetFrameName(nsAString& aResult) const override;

#endif

  void ElementStateChanged(mozilla::dom::ElementState aStates) override;

  // nsIAnonymousContentCreator

  nsresult CreateAnonymousContent(nsTArray<ContentInfo>&) override;

  void AppendAnonymousContentTo(nsTArray<nsIContent*>&,

                                uint32_t aFilter) override;

#ifdef ACCESSIBILITY

  mozilla::a11y::AccType AccessibleType() override;

#endif

 protected:

  class MouseListener;

  friend class MouseListener;

  class MouseListener : public nsIDOMEventListener {

   public:

    NS_DECL_ISUPPORTS

    explicit MouseListener(nsFileControlFrame* aFrame) : mFrame(aFrame) {}

    void ForgetFrame() { mFrame = nullptr; }

   protected:

    virtual ~MouseListener() = default;

    nsFileControlFrame* mFrame;

};

  class SyncDisabledStateEvent;

  friend class SyncDisabledStateEvent;

  class SyncDisabledStateEvent : public mozilla::Runnable {

   public:

    explicit SyncDisabledStateEvent(nsFileControlFrame* aFrame)

        : mozilla::Runnable("nsFileControlFrame::SyncDisabledStateEvent"),

          mFrame(aFrame) {}

    NS_IMETHOD Run() override {

      nsFileControlFrame* frame =

          static_cast<nsFileControlFrame*>(mFrame.GetFrame());

      NS_ENSURE_STATE(frame);

      frame->SyncDisabledState();

      return NS_OK;

   private:

    WeakFrame mFrame;

};

  class DnDListener : public MouseListener {

   public:

    explicit DnDListener(nsFileControlFrame* aFrame) : MouseListener(aFrame) {}

    // nsIDOMEventListener

    MOZ_CAN_RUN_SCRIPT_BOUNDARY

    NS_IMETHOD HandleEvent(mozilla::dom::Event* aEvent) override;

    nsresult GetBlobImplForWebkitDirectory(mozilla::dom::FileList* aFileList,

                                           mozilla::dom::BlobImpl** aBlobImpl);

    bool IsValidDropData(mozilla::dom::DataTransfer* aDataTransfer);

    bool CanDropTheseFiles(mozilla::dom::DataTransfer* aDataTransfer,

                           bool aSupportsMultiple);

};

/**

   * The text box input.

   * @see nsFileControlFrame::CreateAnonymousContent

*/

  RefPtr<Element> mTextContent;

/**

   * The button to open a file or directory picker.

   * @see nsFileControlFrame::CreateAnonymousContent

*/

  RefPtr<Element> mBrowseFilesOrDirs;

/**

   * Drag and drop mouse listener.

   * This makes sure we don't get used after destruction.

*/

  RefPtr<DnDListener> mMouseListener;

 protected:

/**

   * Sync the disabled state of the content with anonymous children.

*/

  void SyncDisabledState();

};

#endif  // nsFileControlFrame_h___