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-rw-r--r--layout/xul/tree/nsTreeColFrame.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/layout/xul/tree/nsTreeColFrame.h b/layout/xul/tree/nsTreeColFrame.h
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index 0000000000..f2525f7599
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+++ b/layout/xul/tree/nsTreeColFrame.h
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+/* -*- 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/. */
+
+#include "mozilla/Attributes.h"
+#include "mozilla/ComputedStyle.h"
+#include "nsBoxFrame.h"
+
+namespace mozilla {
+class PresShell;
+namespace dom {
+class XULTreeElement;
+}
+} // namespace mozilla
+
+nsIFrame* NS_NewTreeColFrame(mozilla::PresShell* aPresShell,
+ mozilla::ComputedStyle* aStyle);
+
+class nsTreeColFrame final : public nsBoxFrame {
+ public:
+ NS_DECL_FRAMEARENA_HELPERS(nsTreeColFrame)
+
+ explicit nsTreeColFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
+ : nsBoxFrame(aStyle, aPresContext, kClassID) {}
+
+ virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow) override;
+
+ virtual void DestroyFrom(nsIFrame* aDestructRoot,
+ PostDestroyData& aPostDestroyData) override;
+
+ virtual void BuildDisplayListForChildren(
+ nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists) override;
+
+ virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
+ int32_t aModType) override;
+
+ virtual void SetXULBounds(nsBoxLayoutState& aBoxLayoutState,
+ const nsRect& aRect,
+ bool aRemoveOverflowArea = false) override;
+
+ friend nsIFrame* NS_NewTreeColFrame(mozilla::PresShell* aPresShell,
+ ComputedStyle* aStyle);
+
+ protected:
+ virtual ~nsTreeColFrame();
+
+ /**
+ * @return the tree that this column belongs to, or nullptr.
+ */
+ mozilla::dom::XULTreeElement* GetTree();
+
+ /**
+ * Helper method that gets the TreeColumns object this column belongs to
+ * and calls InvalidateColumns() on it.
+ */
+ void InvalidateColumns(bool aCanWalkFrameTree = true);
+};