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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "xfa/fde/css/fde_csscache.h"
#include <algorithm>
#include "core/fxcrt/include/fx_ext.h"
FDE_CSSCacheItem::FDE_CSSCacheItem(IFDE_CSSStyleSheet* p)
: pStylesheet(p), dwActivity(0) {
FXSYS_assert(pStylesheet);
pStylesheet->AddRef();
}
FDE_CSSCacheItem::~FDE_CSSCacheItem() {
pStylesheet->Release();
}
FDE_CSSTagCache::FDE_CSSTagCache(FDE_CSSTagCache* parent,
IFDE_CSSTagProvider* tag)
: pTag(tag),
pParent(parent),
dwIDHash(0),
dwTagHash(0),
iClassIndex(0),
dwClassHashs(1) {
FXSYS_assert(pTag != NULL);
CFX_WideStringC wsValue, wsName = pTag->GetTagName();
dwTagHash = FX_HashCode_String_GetW(wsName.c_str(), wsName.GetLength(), TRUE);
FX_POSITION pos = pTag->GetFirstAttribute();
while (pos != NULL) {
pTag->GetNextAttribute(pos, wsName, wsValue);
uint32_t dwNameHash =
FX_HashCode_String_GetW(wsName.c_str(), wsName.GetLength(), TRUE);
static const uint32_t s_dwIDHash = FX_HashCode_String_GetW(L"id", 2, TRUE);
static const uint32_t s_dwClassHash =
FX_HashCode_String_GetW(L"class", 5, TRUE);
if (dwNameHash == s_dwClassHash) {
uint32_t dwHash =
FX_HashCode_String_GetW(wsValue.c_str(), wsValue.GetLength());
dwClassHashs.Add(dwHash);
} else if (dwNameHash == s_dwIDHash) {
dwIDHash = FX_HashCode_String_GetW(wsValue.c_str(), wsValue.GetLength());
}
}
}
FDE_CSSTagCache::FDE_CSSTagCache(const FDE_CSSTagCache& it)
: pTag(it.pTag),
pParent(it.pParent),
dwIDHash(it.dwIDHash),
dwTagHash(it.dwTagHash),
iClassIndex(0),
dwClassHashs(1) {
if (it.dwClassHashs.GetSize() > 0) {
dwClassHashs.Copy(it.dwClassHashs);
}
}
void CFDE_CSSAccelerator::OnEnterTag(IFDE_CSSTagProvider* pTag) {
FDE_CSSTagCache* pTop = GetTopElement();
FDE_CSSTagCache item(pTop, pTag);
m_Stack.Push(item);
}
void CFDE_CSSAccelerator::OnLeaveTag(IFDE_CSSTagProvider* pTag) {
FXSYS_assert(m_Stack.GetTopElement());
FXSYS_assert(m_Stack.GetTopElement()->GetTag() == pTag);
m_Stack.Pop();
}
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