Add m-esr52 at 52.6.0

1 files changed, 64 insertions, 0 deletions

diff --git a/dom/xul/templates/nsTemplateMap.h b/dom/xul/templates/nsTemplateMap.h
new file mode 100644
index 000000000..cb828b093
--- /dev/null
+++ b/dom/xul/templates/nsTemplateMap.h
@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+#ifndef nsTemplateMap_h__
+#define nsTemplateMap_h__
+
+#include "PLDHashTable.h"
+#include "nsXULElement.h"
+
+class nsTemplateMap {
+protected:
+    struct Entry : public PLDHashEntryHdr {
+        nsIContent*     mContent;
+        nsIContent*     mTemplate;
+    };
+
+    PLDHashTable mTable;
+
+public:
+    nsTemplateMap() : mTable(PLDHashTable::StubOps(), sizeof(Entry)) { }
+
+    ~nsTemplateMap() { }
+
+    void
+    Put(nsIContent* aContent, nsIContent* aTemplate) {
+        NS_ASSERTION(!mTable.Search(aContent), "aContent already in map");
+
+        auto entry = static_cast<Entry*>(mTable.Add(aContent, fallible));
+
+        if (entry) {
+            entry->mContent = aContent;
+            entry->mTemplate = aTemplate;
+        }
+    }
+
+    void
+    Remove(nsIContent* aContent) {
+        mTable.Remove(aContent);
+
+        for (nsIContent* child = aContent->GetFirstChild();
+             child;
+             child = child->GetNextSibling()) {
+            Remove(child);
+        }
+    }
+
+
+    void
+    GetTemplateFor(nsIContent* aContent, nsIContent** aResult) {
+        auto entry = static_cast<Entry*>(mTable.Search(aContent));
+        if (entry)
+            NS_IF_ADDREF(*aResult = entry->mTemplate);
+        else
+            *aResult = nullptr;
+    }
+
+    void
+    Clear() { mTable.Clear(); }
+};
+
+#endif // nsTemplateMap_h__
+