1 files changed, 59 insertions, 0 deletions
diff --git a/layout/tables/nsITableLayoutStrategy.h b/layout/tables/nsITableLayoutStrategy.h
new file mode 100644
index 0000000000..e7e4d0e280
--- /dev/null
+++ b/layout/tables/nsITableLayoutStrategy.h
@@ -0,0 +1,59 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+// vim:cindent:ts=4:et:sw=4:
+/* 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/. */
+
+/*
+ * interface for the set of algorithms that determine column and table
+ * isizes
+ */
+
+#ifndef nsITableLayoutStrategy_h_
+#define nsITableLayoutStrategy_h_
+
+#include "nscore.h"
+#include "nsCoord.h"
+
+class gfxContext;
+namespace mozilla {
+struct ReflowInput;
+}  // namespace mozilla
+
+class nsITableLayoutStrategy {
+ public:
+  using ReflowInput = mozilla::ReflowInput;
+
+  virtual ~nsITableLayoutStrategy() = default;
+
+  /** Implement nsIFrame::GetMinISize for the table */
+  virtual nscoord GetMinISize(gfxContext* aRenderingContext) = 0;
+
+  /** Implement nsIFrame::GetPrefISize for the table */
+  virtual nscoord GetPrefISize(gfxContext* aRenderingContext,
+                               bool aComputingSize) = 0;
+
+  /** Implement nsIFrame::MarkIntrinsicISizesDirty for the table */
+  virtual void MarkIntrinsicISizesDirty() = 0;
+
+  /**
+   * Compute final column isizes based on the intrinsic isize data and
+   * the available isize.
+   */
+  virtual void ComputeColumnISizes(const ReflowInput& aReflowInput) = 0;
+
+  /**
+   * Return the type of table layout strategy, without the cost of
+   * a virtual function call
+   */
+  enum Type { Auto, Fixed };
+  Type GetType() const { return mType; }
+
+ protected:
+  explicit nsITableLayoutStrategy(Type aType) : mType(aType) {}
+
+ private:
+  Type mType;
+};
+
+#endif /* !defined(nsITableLayoutStrategy_h_) */