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1 /* |
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2 * Copyright (c) 2005-2007 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: Transaction base class |
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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 M_TRANSACTION_H |
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20 #define M_TRANSACTION_H |
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21 |
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22 #include <e32hashtab.h> |
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23 |
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24 |
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25 inline TUint32 NodeHash(const TAny* aPtr) |
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26 { |
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27 return (TUint32)aPtr; |
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28 }; |
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29 |
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30 inline TBool NodeRelation(const TAny* aPtr1, const TAny* aPtr2) |
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31 { |
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32 return aPtr1 == aPtr2; |
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33 }; |
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34 |
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35 // Default functions for xnnode type |
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36 |
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37 TEMPLATE_SPECIALIZATION class RHashTableBase::Defaults< |
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38 CXnNodeAppIf, |
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39 RHashTableBase::EDefaultSpecifier_Normal> |
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40 { |
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41 public: |
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42 inline static TGeneralHashFunction32 Hash(); |
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43 inline static TGeneralIdentityRelation Id(); |
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44 }; |
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45 |
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46 inline TGeneralHashFunction32 RHashTableBase::Defaults< |
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47 CXnNodeAppIf, |
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48 RHashTableBase::EDefaultSpecifier_Normal>::Hash() |
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49 {return (TGeneralHashFunction32)&NodeHash;} |
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50 |
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51 inline TGeneralIdentityRelation RHashTableBase::Defaults< |
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52 CXnNodeAppIf, |
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53 RHashTableBase::EDefaultSpecifier_Normal>::Id() |
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54 {return (TGeneralIdentityRelation)&NodeRelation;} |
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55 |
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56 |
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57 namespace AiXmlUiController |
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58 { |
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59 |
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60 class CTransactionElement; |
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61 class MTransactionElement; |
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62 class MTransactionFactory; |
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63 |
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64 typedef RPointerArray<CXnProperty> RPropertyArray; |
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65 |
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66 typedef RPtrHashMap<CXnNodeAppIf, RPropertyArray> RPropertyHashMap; |
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67 |
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68 /** |
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69 * MTransaction represents a transaction of publish operations. |
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70 * |
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71 * @lib AiXmlUiMain |
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72 */ |
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73 class MTransaction |
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74 { |
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75 |
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76 public: |
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77 |
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78 /** |
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79 * Appends a transaction element in this transaction. |
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80 * |
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81 * @param aElement the transaction element |
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82 */ |
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83 virtual void Append(MTransactionElement& aElement) = 0; |
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84 |
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85 /** |
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86 * Commits this transaction by committing all transaction elements. |
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87 * |
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88 * @param [out] aLayoutChanged true if UI layout changes |
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89 */ |
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90 virtual void CommitL( TBool& aLayoutChanged, RPropertyHashMap& aPropertyHashMap ) = 0; |
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91 |
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92 /** |
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93 * Resets this transaction for reuse. |
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94 * |
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95 * @param aFactory the factory which created this transaction |
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96 */ |
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97 virtual void Reset(MTransactionFactory& aFactory) = 0; |
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98 |
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99 virtual TDblQueIter<CTransactionElement> ElementIter() = 0; |
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100 protected: |
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101 |
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102 ~MTransaction() {}; |
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103 |
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104 }; |
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105 |
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106 } // namespace AiXmlUiController |
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107 |
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108 #endif // M_UPDATETRANSACTION_H |