Merge branch 'redwood' into releaseRELBASE_20200711

1 files changed, 66 insertions, 0 deletions

diff --git a/widget/gtk/nsMenuContainer.h b/widget/gtk/nsMenuContainer.h
new file mode 100644
index 000000000..95d65a2f1
--- /dev/null
+++ b/widget/gtk/nsMenuContainer.h
@@ -0,0 +1,66 @@
+/* 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 __nsMenuContainer_h__
+#define __nsMenuContainer_h__
+
+#include "mozilla/UniquePtr.h"
+#include "nsTArray.h"
+
+#include "nsMenuObject.h"
+
+class nsIContent;
+class nsNativeMenuDocListener;
+
+// Base class for containers (menus and menubars)
+class nsMenuContainer : public nsMenuObject {
+public:
+    typedef nsTArray<mozilla::UniquePtr<nsMenuObject> > ChildTArray;
+
+    // Determine if this container is being displayed on screen. Must be
+    // implemented by subclasses. Must return true if the container is
+    // in the fully open state, or false otherwise
+    virtual bool IsBeingDisplayed() const = 0;
+
+    // Determine if this container will be rebuilt the next time it opens.
+    // Returns false by default but can be overridden by subclasses
+    virtual bool NeedsRebuild() const;
+
+    // Return the first previous sibling that is of a type supported by the
+    // menu system
+    static nsIContent* GetPreviousSupportedSibling(nsIContent* aContent);
+
+    static const ChildTArray::index_type NoIndex;
+
+protected:
+    nsMenuContainer(nsMenuContainer* aParent, nsIContent* aContent);
+    nsMenuContainer(nsNativeMenuDocListener* aListener, nsIContent* aContent);
+
+    // Create a new child element for the specified content node
+    mozilla::UniquePtr<nsMenuObject> CreateChild(nsIContent* aContent);
+
+    // Return the index of the child for the specified content node
+    size_t IndexOf(nsIContent* aChild) const;
+
+    size_t ChildCount() const { return mChildren.Length(); }
+    nsMenuObject* ChildAt(size_t aIndex) const { return mChildren[aIndex].get(); }
+
+    void RemoveChildAt(size_t aIndex, bool aUpdateNative = true);
+
+    // Remove the child that owns the specified content node
+    void RemoveChild(nsIContent* aChild, bool aUpdateNative = true);
+
+    // Insert a new child after the child that owns the specified content node
+    void InsertChildAfter(mozilla::UniquePtr<nsMenuObject> aChild,
+                          nsIContent* aPrevSibling,
+                          bool aUpdateNative = true);
+
+    void AppendChild(mozilla::UniquePtr<nsMenuObject> aChild,
+                     bool aUpdateNative = true);
+
+private:
+    ChildTArray mChildren;
+};
+
+#endif /* __nsMenuContainer_h__ */