The Tor Browser: content/xul/templates/src/nsTemplateMap.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef nsTemplateMap_h__

     7 #define nsTemplateMap_h__

     9 #include "pldhash.h"

    10 #include "nsXULElement.h"

    12 class nsTemplateMap {

    13 protected:

    14     struct Entry {

    15         PLDHashEntryHdr mHdr;

    16         nsIContent*     mContent;

    17         nsIContent*     mTemplate;

    18     };

    20     PLDHashTable mTable;

    22     void

    23     Init() { PL_DHashTableInit(&mTable, PL_DHashGetStubOps(), nullptr, sizeof(Entry), PL_DHASH_MIN_SIZE); }

    25     void

    26     Finish() { PL_DHashTableFinish(&mTable); }

    28 public:

    29     nsTemplateMap() { Init(); }

    31     ~nsTemplateMap() { Finish(); }

    33     void

    34     Put(nsIContent* aContent, nsIContent* aTemplate) {

    35         NS_ASSERTION(PL_DHASH_ENTRY_IS_FREE(PL_DHashTableOperate(&mTable, aContent, PL_DHASH_LOOKUP)),

    36                      "aContent already in map");

    38         Entry* entry =

    39             reinterpret_cast<Entry*>(PL_DHashTableOperate(&mTable, aContent, PL_DHASH_ADD));

    41         if (entry) {

    42             entry->mContent = aContent;

    43             entry->mTemplate = aTemplate;

    44         }

    45     }

    47     void

    48     Remove(nsIContent* aContent) {

    49         PL_DHashTableOperate(&mTable, aContent, PL_DHASH_REMOVE);

    51         for (nsIContent* child = aContent->GetFirstChild();

    52              child;

    53              child = child->GetNextSibling()) {

    54             Remove(child);

    55         }

    56     }

    59     void

    60     GetTemplateFor(nsIContent* aContent, nsIContent** aResult) {

    61         Entry* entry =

    62             reinterpret_cast<Entry*>(PL_DHashTableOperate(&mTable, aContent, PL_DHASH_LOOKUP));

    64         if (PL_DHASH_ENTRY_IS_BUSY(&entry->mHdr))

    65             NS_IF_ADDREF(*aResult = entry->mTemplate);

    66         else

    67             *aResult = nullptr;

    68     }

    70     void

    71     Clear() { Finish(); Init(); }

    72 };

    74 #endif // nsTemplateMap_h__

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