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1 /* |
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2 * Copyright (c) 2002-2008 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: Class that defines logical AND operation in an XML tree. |
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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 |
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20 // INCLUDES |
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21 #include "cfandoperation.h" |
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22 #include "cfbasicoptrace.h" |
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23 |
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24 #include <gmxmlnode.h> |
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25 |
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26 // CONSTANTS |
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27 _LIT( KScriptAndName, "and" ); |
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28 |
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29 // ============================ MEMBER FUNCTIONS =============================== |
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30 |
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31 // ----------------------------------------------------------------------------- |
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32 // CCFAndOperation::CCFAndOperation |
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33 // C++ default constructor can NOT contain any code, that might leave. |
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34 // ----------------------------------------------------------------------------- |
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35 // |
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36 CCFAndOperation::CCFAndOperation( MCFOperationServices& aServices, |
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37 CCFOperationNode* aParent ) |
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38 : CCFOperationNode( aServices, aParent ) |
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39 { |
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40 FUNC_LOG; |
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41 } |
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42 |
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43 // ----------------------------------------------------------------------------- |
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44 // CCFAndOperation::ConstructL |
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45 // Symbian 2nd phase constructor can leave. |
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46 // ----------------------------------------------------------------------------- |
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47 // |
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48 void CCFAndOperation::ConstructL() |
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49 { |
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50 FUNC_LOG; |
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51 } |
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52 |
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53 // ----------------------------------------------------------------------------- |
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54 // CCFAndOperation::NewL |
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55 // Two-phased constructor. |
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56 // ----------------------------------------------------------------------------- |
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57 // |
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58 CCFAndOperation* CCFAndOperation::NewL( MCFOperationServices& aServices, |
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59 CCFOperationNode* aParent ) |
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60 { |
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61 FUNC_LOG; |
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62 |
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63 CCFAndOperation* self = NewLC( aServices, aParent ); |
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64 CleanupStack::Pop( self ); |
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65 return self; |
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66 } |
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67 |
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68 // ----------------------------------------------------------------------------- |
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69 // CCFAndOperation::NewLC |
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70 // Two-phased constructor that leaves object to the cleanup stack. |
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71 // ----------------------------------------------------------------------------- |
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72 // |
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73 CCFAndOperation* CCFAndOperation::NewLC( MCFOperationServices& aServices, |
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74 CCFOperationNode* aParent ) |
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75 { |
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76 FUNC_LOG; |
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77 |
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78 CCFAndOperation* self = new( ELeave ) CCFAndOperation( aServices, aParent ); |
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79 CleanupStack::PushL( self ); |
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80 self->ConstructL(); |
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81 return self; |
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82 } |
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83 |
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84 // ----------------------------------------------------------------------------- |
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85 // CCFAndOperation::ParseL |
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86 // Construction with parsing from a DOM node. |
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87 // ----------------------------------------------------------------------------- |
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88 // |
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89 CCFAndOperation* CCFAndOperation::ParseL( MCFOperationServices& aServices, |
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90 CCFOperationNode* aParent, |
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91 CMDXMLNode& aNode ) |
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92 { |
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93 FUNC_LOG; |
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94 |
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95 if ( aNode.NodeName().CompareF( KScriptAndName ) != 0 ) |
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96 { |
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97 return NULL; // Cannot create and operation from the given node. |
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98 } |
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99 |
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100 CCFAndOperation* self = NewLC( aServices, aParent ); // CLEANUP<< self |
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101 |
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102 TBool unsupportedNode( EFalse ); |
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103 CMDXMLNode* child = aNode.FirstChild(); |
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104 while ( child ) |
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105 { |
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106 if ( child->NodeType() == CMDXMLNode::EElementNode ) |
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107 { |
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108 CCFOperationNode* op = self->iServices.ParseL( self, *child ); |
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109 if ( op ) |
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110 { |
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111 self->iChildren.AppendL( op ); |
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112 } |
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113 else |
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114 { |
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115 unsupportedNode = ETrue; |
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116 break; |
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117 } |
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118 } |
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119 else if ( child->NodeType() != CMDXMLNode::ECommentNode ) |
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120 { |
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121 unsupportedNode = ETrue; |
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122 break; |
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123 } |
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124 child = child->NextSibling(); |
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125 } |
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126 |
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127 CleanupStack::Pop( self ); // CLEANUP<< self |
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128 if ( unsupportedNode || !self->iChildren.Count() ) |
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129 { |
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130 delete self; // Discard unsupported and operation. |
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131 self = NULL; |
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132 |
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133 if ( unsupportedNode ) |
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134 { |
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135 TPtrC nodeName( child->NodeName() ); |
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136 INFO_1( "CCFAndOperation::ParseL - Unsupported node [%S]", |
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137 &nodeName ); |
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138 } |
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139 else |
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140 { |
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141 INFO( "CCFAndOperation::ParseL - No children" ); |
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142 } |
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143 } |
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144 |
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145 CREATE_DOM_INFO( self, aNode ); |
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146 |
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147 return self; |
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148 } |
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149 |
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150 |
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151 // Destructor |
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152 CCFAndOperation::~CCFAndOperation() |
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153 { |
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154 FUNC_LOG; |
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155 |
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156 iChildren.ResetAndDestroy(); |
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157 } |
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158 |
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159 |
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160 // --------------------------------------------------------------------------- |
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161 // CCFAndOperation::ActivateL |
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162 // --------------------------------------------------------------------------- |
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163 // |
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164 void CCFAndOperation::ActivateL() |
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165 { |
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166 FUNC_LOG; |
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167 |
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168 for ( TInt i = 0; i < iChildren.Count(); ++i ) |
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169 { |
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170 iChildren[ i ]->ActivateL(); |
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171 } |
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172 } |
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173 |
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174 // --------------------------------------------------------------------------- |
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175 // CCFAndOperation::Deactivate |
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176 // --------------------------------------------------------------------------- |
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177 // |
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178 void CCFAndOperation::Deactivate() |
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179 { |
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180 FUNC_LOG; |
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181 |
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182 for ( TInt i = 0; i < iChildren.Count(); ++i ) |
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183 { |
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184 iChildren[ i ]->Deactivate(); |
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185 } |
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186 } |
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187 |
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188 // --------------------------------------------------------------------------- |
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189 // CCFAndOperation::CheckSecurity |
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190 // --------------------------------------------------------------------------- |
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191 // |
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192 TInt CCFAndOperation::CheckSecurity() |
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193 { |
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194 FUNC_LOG; |
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195 |
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196 for ( TInt i = 0; i < iChildren.Count(); ++i ) |
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197 { |
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198 TInt err = iChildren[ i ]->CheckSecurity(); |
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199 if ( err != KErrNone ) |
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200 { |
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201 return err; |
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202 } |
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203 } |
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204 |
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205 return KErrNone; |
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206 } |
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207 |
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208 // ----------------------------------------------------------------------------- |
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209 // CCFAndOperation::Evaluate |
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210 // ----------------------------------------------------------------------------- |
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211 // |
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212 void CCFAndOperation::Evaluate() |
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213 { |
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214 FUNC_LOG; |
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215 |
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216 DOM_INFO( "CCFAndOperation::Evaluate" ); |
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217 |
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218 // get the value of the condition |
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219 TCFConditionValue newValue = Value(); |
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220 TBool branchUndefined = EFalse; |
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221 |
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222 // iterate through all the children |
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223 for ( TInt i = 0; i < iChildren.Count(); ++i ) |
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224 { |
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225 // get the child's value |
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226 newValue = iChildren[ i ]->Value(); |
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227 if ( !newValue ) |
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228 { |
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229 break; |
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230 } |
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231 else if ( newValue == ECFConditionUndefined ) |
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232 { |
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233 branchUndefined = ETrue; |
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234 } |
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235 } |
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236 |
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237 if ( branchUndefined && newValue == ECFConditionTrue ) |
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238 { |
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239 newValue = ECFConditionUndefined; |
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240 } |
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241 |
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242 if ( newValue != Value() ) |
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243 { |
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244 INFO_1( "CCFAndOperation::Evaluate - Value changed to (-1=undefined, 0=false, 1=true): %d", newValue ); |
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245 |
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246 iValue = newValue; |
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247 if ( iParent ) |
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248 { |
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249 // Recursion here; hopefully tree not deep |
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250 iParent->Evaluate(); |
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251 } |
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252 } |
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253 else |
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254 { |
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255 INFO_1( "CCFAndOperation::Evaluate - Value still (-1=undefined, 0=false, 1=true): %d", newValue ); |
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256 } |
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257 } |
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258 |
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259 // ----------------------------------------------------------------------------- |
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260 // CCFAndOperation::Cleanup |
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261 // ----------------------------------------------------------------------------- |
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262 // |
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263 void CCFAndOperation::Cleanup() |
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264 { |
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265 FUNC_LOG; |
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266 |
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267 for ( TInt i = 0; i < iChildren.Count(); ++i ) |
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268 { |
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269 iChildren[ i ]->Cleanup(); |
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270 } |
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271 } |