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1 /* |
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2 * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 #ifndef __FLDSET_H__ |
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20 #define __FLDSET_H__ |
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21 |
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22 #include <e32std.h> |
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23 #include <e32base.h> |
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24 #include <fldinfo.h> |
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25 #include <fldbase.h> |
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26 #include <fldbltin.h> |
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27 |
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28 // |
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29 // Classes declared in this file |
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30 class CTextFieldSet; |
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31 // |
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32 // Classes referenced |
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33 class RReadStream; |
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34 class RWriteStream; |
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35 class TTextFieldEntry; |
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36 class CStreamStore; |
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37 class CStoreMap; |
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38 class TRollbackInfo; |
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39 |
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40 /** |
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41 @internalComponent |
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42 */ |
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43 const TInt KFieldArrayGranularity=1; |
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44 |
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45 |
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46 class CTextFieldSet : public CBase |
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47 /** |
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48 The engine that keeps the field table up to date |
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49 @internalComponent |
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50 */ |
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51 { |
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52 public: |
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53 enum {ENoPasteLimit=-1}; |
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54 public: |
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55 IMPORT_C static CTextFieldSet* NewL(TInt aDocumentLength=0); |
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56 IMPORT_C static CTextFieldSet* NewL(const MTextFieldFactory* aFactory,const CStreamStore& aStore,TStreamId aStreamId); |
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57 IMPORT_C ~CTextFieldSet(); |
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58 // |
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59 // Factory functions |
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60 IMPORT_C void SetFieldFactory(MTextFieldFactory* aFactory); |
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61 IMPORT_C MTextFieldFactory* FieldFactory()const; |
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62 // |
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63 IMPORT_C void Reset(); // removes all fields from the array and reinitialises field array |
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64 // |
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65 // Persistence |
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66 IMPORT_C TStreamId StoreL(CStreamStore& aStore)const; |
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67 IMPORT_C void RestoreL(const CStreamStore& aFieldStore,TStreamId aStreamId); |
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68 // |
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69 // Component persistence |
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70 IMPORT_C void StoreFieldsL(CStreamStore& aStore,CStoreMap& aMap)const; |
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71 IMPORT_C void RestoreFieldsL(const CStreamStore& aFieldStore); |
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72 // |
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73 // Headstream persistence |
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74 IMPORT_C void InternalizeL(RReadStream& aStream); |
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75 IMPORT_C void ExternalizeL(RWriteStream& aStream)const; |
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76 // Cut/Paste |
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77 IMPORT_C TStreamId CopyToStoreL(CStreamStore& aStore,TInt aPos,TInt aLength)const; |
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78 IMPORT_C void CopyComponentsL(CStreamStore& aStore,CStoreMap& aMap,TInt aPos,TInt aLength)const; |
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79 IMPORT_C void CopyToStreamL(RWriteStream& aStream,TInt aPos,TInt aLength)const; |
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80 IMPORT_C void PasteFromStoreL(const CStreamStore& aFieldStore,TStreamId aStreamId,TInt aPos,TInt aMaxLen=ENoPasteLimit); |
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81 IMPORT_C void PasteComponentsL(const CStreamStore& aFieldStore,TInt aPos); |
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82 IMPORT_C void PasteFromStreamL(RReadStream& aStream,TInt aPos,TInt aMaxLen=ENoPasteLimit); |
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83 // Insert/Remove field |
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84 IMPORT_C CTextField* NewFieldL(TUid aFieldType); |
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85 IMPORT_C TInt InsertFieldL(TInt aPos,CTextField* aField,TUid aFieldType); // inserts a field (including text) into doc (returns error num if it fails) |
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86 IMPORT_C TInt RemoveField(TInt aPos); // remove the field aPos is in |
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87 IMPORT_C TInt NewFieldValueL(HBufC*& aBuf, TInt aPos); // returns new value of the field in aBuf (or returns false if aPos not in field) |
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88 // Update field set |
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89 IMPORT_C void NotifyInsertion(TInt aPos, TInt aNumberAdded); |
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90 IMPORT_C void NotifyDeletion(TInt aPos, TInt aNumberRemoved); |
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91 IMPORT_C void NotifyFieldUpdate(TInt aPos, TInt aNewFieldValueLength); |
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92 // Utilities |
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93 IMPORT_C TInt FieldCount() const; // returns total number of fields in document |
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94 IMPORT_C TInt CharCount() const; // returns num characters in the document (according to fields) |
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95 IMPORT_C TBool FindFields(TInt aPos) const; // Returns ETrue if aPos is in a field |
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96 IMPORT_C TBool FindFields(TFindFieldInfo& aInfo,TInt aPos,TInt aRange=0) const; // finds num fields at least partly in range. Returns true if aPos is in field, and returns info on the first field in aRange |
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97 IMPORT_C const CTextField* TextField(TInt aPos)const; |
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98 // Rollback |
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99 IMPORT_C void RollbackPaste(); // call to carry out rollback if a paste goes wrong |
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100 protected: |
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101 CTextFieldSet(); |
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102 void ConstructL(TInt aDocumentLength); |
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103 void ConstructL(const CStreamStore& aFieldStore,TStreamId aStreamId); |
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104 private: |
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105 // persistence |
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106 void StoreFieldsL(CStreamStore& aStore,CStoreMap& aMap,CArrayFixSeg<TTextFieldEntry>* aArray)const; |
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107 void DoRestoreL(const CStreamStore& aFieldStore,TStreamId aStreamId); |
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108 void DoRestoreFieldsL(CArrayFixSeg<TTextFieldEntry>* aArray,const CStreamStore& aFieldStore,TInt aStartIndex=0); |
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109 void InternalizeL(CArrayFixSeg<TTextFieldEntry>* aArray,RReadStream& aStream); |
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110 void ExternalizeL(RWriteStream& aStream,CArrayFixSeg<TTextFieldEntry>* aArray)const; |
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111 void DoPasteL(CArrayFixSeg<TTextFieldEntry>* aSourceArray,TInt aPos); |
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112 // utility functions |
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113 void AddInitialFieldEntryL(CArrayFixSeg<TTextFieldEntry>* aArray,TInt aDocumentLength); // used to initialise the array |
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114 void InsertEntryL(TInt aIndex,TTextFieldEntry& aEntry); // inserts into iFieldArray |
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115 void InsertEntryL(TInt aIndex,TTextFieldEntry& aEntry,CArrayFixSeg<TTextFieldEntry>* aArray); |
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116 void AppendEntryL(TTextFieldEntry& aEntry); // appends into iFieldArray |
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117 void AppendEntryL(TTextFieldEntry& aEntry,CArrayFixSeg<TTextFieldEntry>* aArray); |
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118 void CopyToArrayL(CArrayFixSeg<TTextFieldEntry>* aArray,TInt aPos,TInt aLength)const; |
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119 TBool InField(const TInt aPos, TInt& anIndex, TInt& anOffset) const; // anOffset set to distance into field or gap |
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120 void DeleteFieldEntry(TInt anIndex); |
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121 void DeleteFieldEntry(CArrayFixSeg<TTextFieldEntry>* aArray,TInt anIndex); |
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122 TTextFieldEntry SplitEntry(TInt aIndex,TInt aOffset,TInt aRange)const; |
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123 TInt EntryLen(const TTextFieldEntry& aEntry)const; |
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124 TInt EntryLen(TInt aIndex)const; |
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125 // rollback |
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126 void RecordRollbackInfoL(TInt aPastePos); |
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127 private: |
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128 MTextFieldFactory* iFieldFactory; |
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129 CArrayFixSeg<TTextFieldEntry>* iFieldArray; // Array of fields in the document |
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130 TRollbackInfo* iRollbackInfo; |
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131 __DECLARE_TEST; |
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132 }; |
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133 |
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134 class TFieldMapExternalizer : public MExternalizer<TStreamRef> |
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135 /** |
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136 Allows NULL streams id's to be written out |
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137 when no reference is found in a store map. |
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138 @internalComponent |
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139 */ |
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140 { |
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141 private: |
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142 friend class CPlainText; |
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143 friend class CTextFieldSet; |
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144 private: |
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145 IMPORT_C TFieldMapExternalizer(const CStoreMap& aMap); |
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146 IMPORT_C void ExternalizeL(const TStreamRef& anObject,RWriteStream& aStream) const; |
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147 private: |
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148 const CStoreMap* iMap; |
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149 }; |
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150 |
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151 #endif |