Move CSSRuleCollection class to its own file

xfa/fde/css/cfde_cssrulecollection.cpp

+// Copyright 2016 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_cssstyleselector.h"
+
+#include <algorithm>
+#include <memory>
+
+#include "xfa/fde/css/fde_csscache.h"
+#include "xfa/fde/css/fde_cssdeclaration.h"
+#include "xfa/fde/css/fde_cssstyleselector.h"
+#include "xfa/fde/css/fde_cssstylesheet.h"
+#include "xfa/fde/css/fde_csssyntax.h"
+#include "xfa/fxfa/app/xfa_textlayout.h"
+
+#define FDE_CSSUNIVERSALHASH ('*')
+
+void CFDE_CSSRuleCollection::Clear() {
+  m_IDRules.RemoveAll();
+  m_TagRules.RemoveAll();
+  m_ClassRules.RemoveAll();
+  m_pUniversalRules = nullptr;
+  m_pStaticStore = nullptr;
+  m_iSelectors = 0;
+}
+
+CFDE_CSSRuleCollection::CFDE_CSSRuleCollection()
+    : m_pStaticStore(nullptr),
+      m_pUniversalRules(nullptr),
+      m_pPersudoRules(nullptr),
+      m_iSelectors(0) {}
+
+CFDE_CSSRuleCollection::~CFDE_CSSRuleCollection() {
+  Clear();
+}
+
+void CFDE_CSSRuleCollection::AddRulesFrom(const CFDE_CSSStyleSheetArray& sheets,
+                                          uint32_t dwMediaList,
+                                          IFGAS_FontMgr* pFontMgr) {
+  int32_t iSheets = sheets.GetSize();
+  for (int32_t i = 0; i < iSheets; ++i) {
+    IFDE_CSSStyleSheet* pSheet = sheets.GetAt(i);
+    if (uint32_t dwMatchMedia = pSheet->GetMediaList() & dwMediaList) {
+      int32_t iRules = pSheet->CountRules();
+      for (int32_t j = 0; j < iRules; j++) {
+        AddRulesFrom(pSheet, pSheet->GetRule(j), dwMatchMedia, pFontMgr);
+      }
+    }
+  }
+}
+
+void CFDE_CSSRuleCollection::AddRulesFrom(IFDE_CSSStyleSheet* pStyleSheet,
+                                          IFDE_CSSRule* pRule,
+                                          uint32_t dwMediaList,
+                                          IFGAS_FontMgr* pFontMgr) {
+  switch (pRule->GetType()) {
+    case FDE_CSSRULETYPE_Style: {
+      IFDE_CSSStyleRule* pStyleRule = static_cast<IFDE_CSSStyleRule*>(pRule);
+      CFDE_CSSDeclaration* pDeclaration = pStyleRule->GetDeclaration();
+      int32_t iSelectors = pStyleRule->CountSelectorLists();
+      for (int32_t i = 0; i < iSelectors; ++i) {
+        CFDE_CSSSelector* pSelector = pStyleRule->GetSelectorList(i);
+        if (pSelector->GetType() == FDE_CSSSELECTORTYPE_Persudo) {
+          FDE_CSSRuleData* pData = NewRuleData(pSelector, pDeclaration);
+          AddRuleTo(m_pPersudoRules, pData);
+          continue;
+        }
+        if (pSelector->GetNameHash() != FDE_CSSUNIVERSALHASH) {
+          AddRuleTo(m_TagRules, pSelector->GetNameHash(), pSelector,
+                    pDeclaration);
+          continue;
+        }
+        CFDE_CSSSelector* pNext = pSelector->GetNextSelector();
+        if (!pNext) {
+          FDE_CSSRuleData* pData = NewRuleData(pSelector, pDeclaration);
+          AddRuleTo(m_pUniversalRules, pData);
+          continue;
+        }
+        switch (pNext->GetType()) {
+          case FDE_CSSSELECTORTYPE_ID:
+            AddRuleTo(m_IDRules, pNext->GetNameHash(), pSelector, pDeclaration);
+            break;
+          case FDE_CSSSELECTORTYPE_Class:
+            AddRuleTo(m_ClassRules, pNext->GetNameHash(), pSelector,
+                      pDeclaration);
+            break;
+          case FDE_CSSSELECTORTYPE_Descendant:
+          case FDE_CSSSELECTORTYPE_Element:
+            AddRuleTo(m_pUniversalRules, NewRuleData(pSelector, pDeclaration));
+            break;
+          default:
+            ASSERT(FALSE);
+            break;
+        }
+      }
+    } break;
+    case FDE_CSSRULETYPE_Media: {
+      IFDE_CSSMediaRule* pMediaRule = static_cast<IFDE_CSSMediaRule*>(pRule);
+      if (pMediaRule->GetMediaList() & dwMediaList) {
+        int32_t iRules = pMediaRule->CountRules();
+        for (int32_t i = 0; i < iRules; ++i) {
+          AddRulesFrom(pStyleSheet, pMediaRule->GetRule(i), dwMediaList,
+                       pFontMgr);
+        }
+      }
+    } break;
+    default:
+      break;
+  }
+}
+
+void CFDE_CSSRuleCollection::AddRuleTo(CFX_MapPtrToPtr& map,
+                                       uint32_t dwKey,
+                                       CFDE_CSSSelector* pSel,
+                                       CFDE_CSSDeclaration* pDecl) {
+  void* pKey = (void*)(uintptr_t)dwKey;
+  FDE_CSSRuleData* pData = NewRuleData(pSel, pDecl);
+  FDE_CSSRuleData* pList = nullptr;
+  if (!map.Lookup(pKey, (void*&)pList)) {
+    map.SetAt(pKey, pData);
+  } else if (AddRuleTo(pList, pData)) {
+    map.SetAt(pKey, pList);
+  }
+}
+
+FX_BOOL CFDE_CSSRuleCollection::AddRuleTo(FDE_CSSRuleData*& pList,
+                                          FDE_CSSRuleData* pData) {
+  if (pList) {
+    pData->pNext = pList->pNext;
+    pList->pNext = pData;
+    return FALSE;
+  }
+
+  pList = pData;
+  return TRUE;
+}
+
+FDE_CSSRuleData* CFDE_CSSRuleCollection::NewRuleData(
+    CFDE_CSSSelector* pSel,
+    CFDE_CSSDeclaration* pDecl) {
+  return FXTARGET_NewWith(m_pStaticStore)
+      FDE_CSSRuleData(pSel, pDecl, ++m_iSelectors);
+}