1 files changed, 77 insertions, 0 deletions
diff --git a/layout/forms/nsMeterFrame.h b/layout/forms/nsMeterFrame.h
new file mode 100644
index 0000000000..4aa82c1384
--- /dev/null
+++ b/layout/forms/nsMeterFrame.h
@@ -0,0 +1,77 @@
+/* -*- 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 nsMeterFrame_h___
+#define nsMeterFrame_h___
+
+#include "mozilla/Attributes.h"
+#include "nsContainerFrame.h"
+#include "nsIAnonymousContentCreator.h"
+#include "nsCOMPtr.h"
+#include "nsCSSPseudoElements.h"
+
+class nsMeterFrame final : public nsContainerFrame,
+                           public nsIAnonymousContentCreator
+
+{
+  typedef mozilla::dom::Element Element;
+
+ public:
+  NS_DECL_QUERYFRAME
+  NS_DECL_FRAMEARENA_HELPERS(nsMeterFrame)
+
+  explicit nsMeterFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
+  virtual ~nsMeterFrame();
+
+  void Destroy(DestroyContext&) override;
+
+  virtual void Reflow(nsPresContext* aCX, ReflowOutput& aDesiredSize,
+                      const ReflowInput& aReflowInput,
+                      nsReflowStatus& aStatus) override;
+
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult GetFrameName(nsAString& aResult) const override {
+    return MakeFrameName(u"Meter"_ns, aResult);
+  }
+#endif
+
+  // nsIAnonymousContentCreator
+  virtual nsresult CreateAnonymousContent(
+      nsTArray<ContentInfo>& aElements) override;
+  virtual void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
+                                        uint32_t aFilter) override;
+
+  virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
+                                    int32_t aModType) override;
+
+  virtual mozilla::LogicalSize ComputeAutoSize(
+      gfxContext* aRenderingContext, mozilla::WritingMode aWM,
+      const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
+      const mozilla::LogicalSize& aMargin,
+      const mozilla::LogicalSize& aBorderPadding,
+      const mozilla::StyleSizeOverrides& aSizeOverrides,
+      mozilla::ComputeSizeFlags aFlags) override;
+
+  virtual nscoord GetMinISize(gfxContext* aRenderingContext) override;
+  virtual nscoord GetPrefISize(gfxContext* aRenderingContext) override;
+
+  /**
+   * Returns whether the frame and its child should use the native style.
+   */
+  bool ShouldUseNativeStyle() const;
+
+ protected:
+  // Helper function which reflow the anonymous div frame.
+  void ReflowBarFrame(nsIFrame* aBarFrame, nsPresContext* aPresContext,
+                      const ReflowInput& aReflowInput, nsReflowStatus& aStatus);
+  /**
+   * The div used to show the meter bar.
+   * @see nsMeterFrame::CreateAnonymousContent
+   */
+  nsCOMPtr<Element> mBarDiv;
+};
+
+#endif