1 files changed, 142 insertions, 0 deletions
diff --git a/layout/forms/nsFileControlFrame.h b/layout/forms/nsFileControlFrame.h
new file mode 100644
index 0000000000..085cab98a3
--- /dev/null
+++ b/layout/forms/nsFileControlFrame.h
@@ -0,0 +1,142 @@
+/* -*- 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 "nsIFormControlFrame.h"
+#include "nsIDOMEventListener.h"
+#include "nsIAnonymousContentCreator.h"
+#include "nsCOMPtr.h"
+
+namespace mozilla::dom {
+class FileList;
+class BlobImpl;
+class DataTransfer;
+}  // namespace mozilla::dom
+
+class nsFileControlFrame final : public nsBlockFrame,
+                                 public nsIFormControlFrame,
+                                 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;
+
+  // nsIFormControlFrame
+  nsresult SetFormProperty(nsAtom* aName, const nsAString& aValue) override;
+  void SetFocus(bool aOn, bool aRepaint) override;
+
+  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);
+  };
+
+  bool IsFrameOfType(uint32_t aFlags) const override {
+    return nsBlockFrame::IsFrameOfType(
+        aFlags & ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
+  }
+
+  /**
+   * 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___