1 files changed, 84 insertions, 0 deletions
diff --git a/layout/xul/nsSplitterFrame.h b/layout/xul/nsSplitterFrame.h
new file mode 100644
index 0000000000..72e1f4c51b
--- /dev/null
+++ b/layout/xul/nsSplitterFrame.h
@@ -0,0 +1,84 @@
+/* -*- 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/. */
+
+//
+// nsSplitterFrame
+//
+
+#ifndef nsSplitterFrame_h__
+#define nsSplitterFrame_h__
+
+#include "mozilla/Attributes.h"
+#include "mozilla/RefPtr.h"
+#include "SimpleXULLeafFrame.h"
+
+class nsSplitterFrameInner;
+
+namespace mozilla {
+class PresShell;
+}  // namespace mozilla
+
+nsIFrame* NS_NewSplitterFrame(mozilla::PresShell* aPresShell,
+                              mozilla::ComputedStyle* aStyle);
+
+class nsSplitterFrame final : public mozilla::SimpleXULLeafFrame {
+ public:
+  NS_DECL_FRAMEARENA_HELPERS(nsSplitterFrame)
+
+  explicit nsSplitterFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
+  void Destroy(DestroyContext&) override;
+
+#ifdef DEBUG_FRAME_DUMP
+  nsresult GetFrameName(nsAString& aResult) const override {
+    return MakeFrameName(u"SplitterFrame"_ns, aResult);
+  }
+#endif
+
+  bool IsHorizontal() const { return mIsHorizontal; }
+
+  // nsIFrame overrides
+  nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
+                            int32_t aModType) override;
+
+  void Init(nsIContent* aContent, nsContainerFrame* aParent,
+            nsIFrame* aPrevInFlow) override;
+
+  NS_IMETHOD HandlePress(nsPresContext* aPresContext,
+                         mozilla::WidgetGUIEvent* aEvent,
+                         nsEventStatus* aEventStatus) override;
+
+  NS_IMETHOD HandleMultiplePress(nsPresContext* aPresContext,
+                                 mozilla::WidgetGUIEvent* aEvent,
+                                 nsEventStatus* aEventStatus,
+                                 bool aControlHeld) override;
+
+  void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
+              const ReflowInput& aReflowInput,
+              nsReflowStatus& aStatus) override;
+
+  MOZ_CAN_RUN_SCRIPT
+  NS_IMETHOD HandleDrag(nsPresContext* aPresContext,
+                        mozilla::WidgetGUIEvent* aEvent,
+                        nsEventStatus* aEventStatus) override;
+
+  NS_IMETHOD HandleRelease(nsPresContext* aPresContext,
+                           mozilla::WidgetGUIEvent* aEvent,
+                           nsEventStatus* aEventStatus) override;
+
+  nsresult HandleEvent(nsPresContext* aPresContext,
+                       mozilla::WidgetGUIEvent* aEvent,
+                       nsEventStatus* aEventStatus) override;
+
+  void BuildDisplayList(nsDisplayListBuilder* aBuilder,
+                        const nsDisplayListSet& aLists) override;
+
+ private:
+  friend class nsSplitterFrameInner;
+  RefPtr<nsSplitterFrameInner> mInner;
+  bool mIsHorizontal = false;
+};  // class nsSplitterFrame
+
+#endif