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295f920116
I wrote a script to do this which is attached to the bug. TBR=abarth@chromium.org BUG=435361 Review URL: https://codereview.chromium.org/736373003
70 lines
2.6 KiB
C++
70 lines
2.6 KiB
C++
/*
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Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
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Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
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Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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This class provides all functionality needed for loading images, style sheets and html
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pages from the web. It has a memory cache for these objects.
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*/
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#ifndef SKY_ENGINE_CORE_FETCH_RESOURCECLIENTWALKER_H_
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#define SKY_ENGINE_CORE_FETCH_RESOURCECLIENTWALKER_H_
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#include "sky/engine/core/fetch/ResourceClient.h"
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#include "sky/engine/wtf/HashCountedSet.h"
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#include "sky/engine/wtf/Vector.h"
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namespace blink {
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// Call this "walker" instead of iterator so people won't expect Qt or STL-style iterator interface.
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// Just keep calling next() on this. It's safe from deletions of items.
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template<typename T> class ResourceClientWalker {
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public:
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ResourceClientWalker(const HashCountedSet<ResourceClient*>& set)
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: m_clientSet(set), m_clientVector(set.size()), m_index(0)
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{
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typedef HashCountedSet<ResourceClient*>::const_iterator Iterator;
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Iterator end = set.end();
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size_t clientIndex = 0;
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for (Iterator current = set.begin(); current != end; ++current)
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m_clientVector[clientIndex++] = current->key;
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}
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T* next()
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{
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size_t size = m_clientVector.size();
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while (m_index < size) {
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ResourceClient* next = m_clientVector[m_index++];
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if (m_clientSet.contains(next)) {
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ASSERT(T::expectedType() == ResourceClient::expectedType() || next->resourceClientType() == T::expectedType());
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return static_cast<T*>(next);
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}
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}
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return 0;
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}
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private:
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const HashCountedSet<ResourceClient*>& m_clientSet;
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Vector<ResourceClient*> m_clientVector;
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size_t m_index;
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};
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}
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#endif // SKY_ENGINE_CORE_FETCH_RESOURCECLIENTWALKER_H_
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