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/* -*- 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"
using mozilla::fallible;
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__
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