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1 /* |
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2 * Copyright (c) 2004,2005 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: This class provides a reference implementation for the SVGT |
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15 * UI Control Application Observer. |
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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 #ifndef SVGTAPPOBSERVERUTIL_H |
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21 #define SVGTAPPOBSERVERUTIL_H |
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22 |
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23 #include <e32base.h> |
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24 #include <e32std.h> |
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25 #include <AknProgressDialog.h> |
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26 #include <cdownloadmgruiuserinteractions.h> |
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27 #include <cdownloadmgruidownloadslist.h> |
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28 #include <cdownloadmgruilibregistry.h> |
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29 |
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30 #include <SVGTAppObserver.h> |
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31 #include <downloadmgrclient.h> |
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32 #include <SVGTUISaveListener.h> |
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33 #include <SVGTFileManager.h> |
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34 #include <SVGTViewerAppDownloads.h> |
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35 #include <SVGTViewerAppDbgFlags.hrh> |
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36 |
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37 |
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38 // Forward Declarations |
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39 class CSVGTUIDialog; |
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40 class CEikProgressInfo; |
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41 class CDocumentHandler; |
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42 |
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43 // CLASS DECLARATION |
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44 |
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45 /** |
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46 * This class is used as a utility class for implementing observer for the |
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47 * SVGT UI Control. |
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48 * It provides helper function/reference implementation for following |
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49 * functionality: |
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50 * a. Hyperlink handling |
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51 * b. Download manager + UI Usage |
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52 * c. Save Option Implementation |
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53 * d. Misc (GetSmilFitValue) |
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54 * @lib SVGTAppObserverUtil |
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55 * @since 3.0 |
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56 */ |
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57 |
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58 class CSVGTAppObserverUtil : public CBase, |
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59 public MSvgtAppObserver, |
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60 public MHttpDownloadMgrObserver, |
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61 public MSVGTUISaveListener, |
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62 public MProgressDialogCallback |
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63 { |
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64 |
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65 public: |
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66 |
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67 enum TDownloadNeeded |
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68 { |
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69 // The uri refers to a local image file |
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70 ELocalImageFile, |
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71 // The uri refers to a remote image file |
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72 ERemoteImageFile, |
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73 // The uri doesnt refer to an image file |
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74 ENotAnImageFile |
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75 }; |
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76 |
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77 enum TWaitNoteState |
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78 { |
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79 // WaitNote is used for file saving |
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80 ESaveFileWait = 1, |
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81 // WaitNote is used for downloading image synchronously |
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82 EDownloadImageWait |
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83 }; |
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84 |
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85 public: // Constructors and destructor |
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86 |
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87 /** |
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88 * Two-phased constructor. |
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89 * aAppDialog: Pointer to the SVGT Dialog |
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90 * RFile* aFileHdlPtr: File handle to the content. |
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91 * const TDesC& filename: Filepath. |
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92 * TBool aIsFileFullPathAvailable: Flag to indicate if content's |
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93 * fullpath is available. |
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94 * TBool aCanSaveContent, |
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95 * TBool aShouldMoveContent. |
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96 */ |
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97 IMPORT_C static CSVGTAppObserverUtil* NewL( CSVGTUIDialog* aAppDialog, |
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98 RFile* aFileHdlPtr, |
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99 const TDesC& aFilename, |
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100 TBool aIsFileFullPathAvailable, |
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101 TBool aCanSaveContent, |
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102 TBool aShouldMoveContent ); |
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103 |
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104 /** |
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105 * Two-phased constructor. |
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106 * aAppDialog: Pointer to the SVGT Dialog |
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107 * RFile* aFileHdlPtr: File handle to the content. |
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108 * const TDesC& aFilename: Filepath. |
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109 * TBool aIsFileFullPathAvailable: Flag to indicate if content's |
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110 * fullpath is available. |
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111 * TBool aCanSaveContent, |
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112 * TBool aShouldMoveContent. |
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113 */ |
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114 static CSVGTAppObserverUtil* NewLC( CSVGTUIDialog* aAppDialog, |
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115 RFile* aFileHdlPtr, |
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116 const TDesC& aFilename, |
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117 TBool aIsFileFullPathAvailable, |
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118 TBool aCanSaveContent, |
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119 TBool aShouldMoveContent); |
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120 |
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121 /** |
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122 * Two-phased constructor. |
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123 * aAppDialog: Pointer to the SVGT Dialog |
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124 * RFile* aFileHdlPtr: File handle to the content. |
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125 * @since 3.0 |
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126 */ |
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127 IMPORT_C static CSVGTAppObserverUtil* NewL( CSVGTUIDialog* aAppDialog, |
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128 RFile* aFileHdlPtr ); |
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129 |
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130 /** |
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131 * Two-phased constructor. |
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132 * aAppDialog: Pointer to the SVGT Dialog |
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133 * RFile* aFileHdlPtr: File handle to the content. |
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134 * @since 3.0 |
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135 */ |
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136 static CSVGTAppObserverUtil* NewLC( CSVGTUIDialog* aAppDialog, |
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137 RFile* aFileHdlPtr ); |
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138 /** |
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139 * Destructor. |
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140 */ |
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141 IMPORT_C virtual ~CSVGTAppObserverUtil(); |
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142 |
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143 |
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144 /** |
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145 * This method is called by the svg engine when there is an image tag |
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146 * encountered in the svg file. This function parses the uri, checks |
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147 * whether the uri is a local file or a remote file. If the file is |
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148 * a remote file, the file is downloaded. Fetched file is then opened |
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149 * and the file handle returned to the engine. |
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150 * @since 3.0 |
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151 * @see MSvgRequestObserver::FetchImage |
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152 */ |
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153 IMPORT_C virtual TInt FetchImage( const TDesC& aUri, |
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154 RFs& aSession, RFile& aFileHandle ); |
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155 |
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156 TInt FetchFont( const TDesC& /* aUri */, |
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157 RFs& /* aSession */, RFile& /* aFileHandle */ ); |
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158 |
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159 /** |
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160 * From MSvgtAppObserver |
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161 * @see MSvgtAppObserver::LinkActivated |
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162 */ |
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163 IMPORT_C virtual TBool LinkActivated( const TDesC& aUri ); |
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164 |
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165 |
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166 /** |
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167 * From MSvgtAppObserver |
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168 * @see MSvgtAppObserver::LinkActivatedWithShow |
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169 */ |
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170 IMPORT_C virtual TBool LinkActivatedWithShow( const TDesC& aUri, |
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171 const TDesC& aShow ); |
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172 /** |
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173 * From MSvgtAppObserver |
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174 * @see MSvgtAppObserver::GetSmilFitValue |
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175 */ |
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176 IMPORT_C virtual void GetSmilFitValue( TDes& aSmilValue ); |
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177 |
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178 /** |
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179 * This function is called by the application to enable/disable the |
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180 * downloads menu in the options menu |
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181 * @since 3.0 |
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182 * @param aAddDownloadMenu enable/disable the downloads menu |
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183 */ |
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184 |
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185 IMPORT_C void SetDownloadMenu( TBool aAddDownloadMenu ); |
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186 |
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187 /** |
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188 * This function is called by the Ui Dialog to enable/disable the |
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189 * downloads menu in the options menu |
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190 * @since 3.0 |
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191 * @return iDownloadMenuEnabled enable/disable the downloads menu |
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192 */ |
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193 IMPORT_C virtual TBool CanShowDownload() const; |
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194 |
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195 |
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196 /** |
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197 * From MSvgtAppObserver |
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198 * @see MSvgtAppObserver::DisplayDownloadMenuL |
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199 */ |
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200 IMPORT_C virtual void DisplayDownloadMenuL(); |
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201 |
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202 /** |
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203 * From MSvgtAppObserver |
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204 * @see MSvgtAppObserver::CanShowSave |
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205 */ |
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206 IMPORT_C virtual TBool CanShowSave(); |
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207 |
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208 /** |
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209 * From MSvgtAppObserver |
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210 * @see MSvgtAppObserver::IsSavingDone |
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211 */ |
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212 IMPORT_C virtual TBool IsSavingDone(); |
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213 |
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214 /** |
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215 * From MSvgtAppObserver |
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216 * @see MSvgtAppObserver::DoSaveL |
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217 */ |
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218 IMPORT_C virtual void DoSaveL( TInt aCommandId ); |
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219 |
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220 IMPORT_C TInt NewFetchImageData( const TDesC& aUri ); |
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221 IMPORT_C void AssignEmbededDataL( const TDesC& aUri ); |
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222 TBool ExitWhenOrientationChange( ); |
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223 |
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224 /** |
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225 * Helper function for DoSaveL |
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226 */ |
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227 void SaveContentL( RFile& aSrcFileHandle, const TDesC& aSrcFileName, |
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228 TDes& aDstFileName, TBool aMoveFlag ); |
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229 /** |
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230 * This function generates a unique file name in the private directory |
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231 * @param aName On return contains the full path on return. |
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232 */ |
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233 void GetUniqueFileName( TDes& aName ) const; |
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234 |
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235 /** |
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236 * Checks whether the file is a GZipped content |
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237 * @param aFileHandle File handle to the SVG content |
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238 */ |
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239 TBool IsGzipContent( const RFile& aFileHandle ) const; |
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240 |
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241 /** |
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242 * This function saves the SVG content into the private directory |
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243 */ |
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244 void SaveSvgTextContentL( const RFile& aSrcFileHandle, |
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245 TDes& aTempFileName ); |
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246 |
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247 public: // Callback from the MHttpDownloadMgrObserver |
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248 /** |
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249 * This method is a call back function used by the download manager |
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250 * to indicate the completion/failure of the download started. |
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251 * LinkActivatedWithShow function |
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252 * @since 3.0 |
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253 * @param : aDownload -- handle of the download |
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254 * @param : aEvent -- download event |
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255 */ |
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256 IMPORT_C void HandleDMgrEventL( RHttpDownload& aDownload, |
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257 THttpDownloadEvent aEvent ); |
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258 public: // Callback from the MSVGTUISaveListener |
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259 /** |
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260 * From MSVGTUISaveListener. This function is called |
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261 * when buffering or saving position is changed. |
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262 * @since 3.0 |
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263 * @param aPosition, New buffering/saving position (0-100) |
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264 */ |
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265 IMPORT_C virtual void SVGTPositionChanged( TInt aPosition ); |
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266 |
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267 /** |
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268 * From MSVGTUISaveListener. Called when saving is finished. |
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269 * @since 3.0 |
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270 * @param aError, KErrNone or one of the system wide error codes. |
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271 * @return void |
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272 */ |
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273 IMPORT_C virtual void SVGTSavingDoneL( TInt aError ); |
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274 |
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275 public: // Functions from MProgressDialogCallback |
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276 |
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277 /** @see MProgressDialogCallback::DialogDismissedL */ |
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278 IMPORT_C void DialogDismissedL( TInt aButtonId ); |
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279 |
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280 public: // Leaving variants of linkActivated and linkActivatedWithShow |
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281 |
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282 /** |
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283 * This method is called by LinkActivated. |
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284 * If this function leaves, it is trapped by the linkActivated function |
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285 * @since 3.0 |
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286 * @param : aUri -- URI string of hyperlink |
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287 */ |
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288 IMPORT_C void LinkActivatedL( const TDesC& aUri ); |
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289 |
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290 /** |
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291 * This method is called by LinkActivatedWithShow. |
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292 * If this function leaves, it is trapped by the |
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293 * LinkActivatedWithShow function |
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294 * @since 3.0 |
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295 * @param : aUri -- URI string of hyperlink |
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296 * @param : aShow -- xlink:show value |
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297 */ |
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298 IMPORT_C void LinkActivatedWithShowL( const TDesC& aUri , |
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299 const TDesC& aShow ); |
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300 public: |
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301 |
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302 /** |
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303 * This method is called by LinkActivated(WithShow), FetchImage |
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304 * This checks whether the uri passed is a local image file or |
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305 * a remote image file or not an image file. |
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306 * @since 3.0 |
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307 * @param : aUri -- URI string of hyperlink |
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308 * @return : TDownloadNeeded |
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309 * ELocalImageFile - if the uri is a local file |
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310 * ENotAnImageFile - If the uri is not an image file |
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311 * ERemoteImageFile - If the uri is remote image file. |
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312 */ |
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313 IMPORT_C static TDownloadNeeded IsDownloadNeededL( |
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314 const TDesC& aUri ); |
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315 |
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316 /** |
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317 * This method is called by LinkActivated(WithShow), FetchImage |
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318 * This gets the filename from the uri and the |
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319 * @since 3.0 |
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320 * @param : aUri -- URI string of hyperlink |
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321 * @return : ETrue if the local file name is retrieved |
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322 * EFalse if the file could not be retrieved |
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323 */ |
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324 IMPORT_C TBool GetFileNameFromUri( const TDesC& aUri, |
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325 TDes& aFileName ) const; |
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326 |
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327 /** |
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328 * This method is called by LinkActivated(WithShow), FetchImage |
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329 * This gets the filename with full path from the uri and the |
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330 * @since 3.0 |
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331 * @param : aUri -- URI string of hyperlink |
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332 * @return : ETrue if the local file name is retrieved |
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333 * EFalse if the file could not be retrieved |
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334 */ |
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335 IMPORT_C static TBool GetLocalFile( const TDesC& aUri, |
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336 TDes& aFileName, |
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337 const TDesC& aSvgFileName ); |
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338 |
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339 |
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340 protected: //helper functions for fetchImage function |
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341 |
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342 /** |
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343 * This method is called by LinkActivated(WithShow),FetchImage functions |
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344 * If this function leaves, it is trapped by the |
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345 * Called function |
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346 * @since 3.0 |
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347 * @param : aUri -- URI string of hyperlink |
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348 * @param : aSession - File server session in which the file is opened |
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349 * @param : aFileHandle - handle of the file downloaded. |
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350 * @param : aIsSynchronous - Flag to indicate synchronous/asynchronous |
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351 * download |
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352 * @param : aIsEmbedded - Flag to indicate whether the downloaded |
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353 * file needs to be opened in embedded mode or not. |
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354 * @return : KErrNone if successful |
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355 * KErrNotFound if not |
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356 */ |
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357 TInt StartDownloadingImageL( |
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358 const TDesC& aUri, |
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359 RFs& aSession, |
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360 RFile& aFileHandle, |
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361 TBool aIsSynchronous, |
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362 TBool aLinkFlag, |
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363 TBool aIsEmbedded = ETrue ); |
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364 |
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365 |
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366 /** |
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367 * This method is called by the Fetch Image |
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368 * before starting the download to get Access point id. |
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369 * @since 3.0 |
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370 * @param : aIapId -- Access point id Found |
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371 * @return : True if Iap found else returns false. |
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372 */ |
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373 IMPORT_C TBool GetDefaultInetAccessPointL |
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374 ( TUint32& aIapId ) const; |
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375 |
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376 /** |
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377 * This method is called by HandleDMgrEventL |
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378 * This makes use of Document Handler to launch the file. |
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379 * @since 3.0 |
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380 * @param : aFileName -- Name of the file to be launched. |
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381 * @param : aIsEmbedded -- Flag to indicate whether file has to |
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382 * be opened in embedded mode or independent mode |
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383 */ |
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384 IMPORT_C void LaunchDownloadedFileL( const TDesC& aFileName, |
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385 TBool aIsEmbedded, |
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386 TBool aAllowSave ) const; |
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387 |
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388 |
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389 #ifdef SVGTVIEWERAPP_DOWNLOADMGR_ENABLED |
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390 /** |
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391 * This method is called by HandleDMgrEventL |
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392 * This iterates through the linked list and return the link |
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393 * corresponding to the given http download handle |
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394 * @since 3.0 |
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395 * @param : aHttpDownload -- handle of hyperlink |
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396 * @return : CSVGTViewerAppDownloads * the link corresponding to |
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397 * the given httpDownload handle. |
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398 */ |
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399 CSVGTViewerAppDownloads* FindDownload( |
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400 const RHttpDownload* aHttpDownload ); |
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401 #endif |
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402 /** |
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403 * This method is used to get back the filename of the currently |
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404 * playing svg content in filname.ext format. |
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405 * @since 3.0 |
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406 * @param : TDes& filename: Parameter where filename needs to be |
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407 * returned. |
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408 * @return : void. |
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409 */ |
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410 IMPORT_C void GetFileNameAndExt(TDes& filename) const; |
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411 |
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412 /** |
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413 * This method is used in Save operation to decide whether |
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414 * move action should be performed. |
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415 * @since 3.0 |
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416 * @param : None. |
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417 * @return : ETrue: Content needs to be moved. EFalse: Content |
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418 * shouldn't be moved. |
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419 */ |
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420 IMPORT_C TBool IsAllowMove() const; |
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421 |
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422 /** |
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423 * This method is used to launch wait dialog while save operation |
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424 * is going on. |
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425 * @since 3.0 |
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426 * @param : aResourceId: Resource to be used for wait-note. |
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427 * aVisibilityDelayOff: Parameter to the wait note. |
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428 * aFileName FileName to be displayed in WaitNote |
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429 * @return : none. |
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430 */ |
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431 void LaunchWaitNoteL(TInt aResourceId, |
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432 TBool aVisibilityDelayOff, |
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433 const TDesC& aFileName ); |
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434 |
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435 /** |
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436 * This method is used check whether content file's full-path |
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437 * is available. |
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438 * @since 3.0 |
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439 * @return : ETrue: Fullpath available, EFalse: Fullpath |
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440 * not available. |
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441 */ |
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442 IMPORT_C TBool IsFileFullPathAvailable() const; |
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443 |
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444 protected: |
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445 |
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446 /** |
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447 * C++ default constructor. |
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448 * aAppDialog: Pointer to the SVGT Dialog |
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449 */ |
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450 IMPORT_C CSVGTAppObserverUtil( CSVGTUIDialog* aAppDialog ); |
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451 |
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452 /** |
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453 * Default Symbian 2nd phase constructor. |
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454 */ |
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455 IMPORT_C void ConstructL(); |
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456 |
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457 /** |
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458 * Default Symbian 2nd phase constructor. |
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459 * RFile* aFileHdlPtr: File handle to the content. |
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460 * const TDesC& filename: Filepath. |
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461 * TBool aIsFileFullPathAvailable: Flag to indicate if content's |
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462 * fullpath is available. |
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463 * TBool aCanSaveContent, |
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464 * TBool aShouldMoveContent. |
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465 */ |
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466 IMPORT_C void ConstructL( RFile* aFileHdlPtr, |
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467 const TDesC& aFilename, |
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468 TBool aIsFileFullPathAvailable, |
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469 TBool aCanSaveContent, |
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470 TBool aShouldMoveContent ); |
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471 |
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472 /** |
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473 * Default Symbian 2nd phase constructor. |
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474 * RFile* aFileHdlPtr: File handle to the content. |
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475 */ |
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476 IMPORT_C void ConstructL( RFile* aFileHdlPtr ); |
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477 |
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478 #ifdef SVGTVIEWERAPP_DBG_FLAG |
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479 void PrintDebugMsg( const TDesC& aMsg ); |
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480 #endif |
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481 |
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482 private: //User methods |
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483 /** |
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484 * Reads the downloaded file & assign to the svg engine. |
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485 * @since 3.1 |
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486 * @param CSVGTViewerAppDownloads aDownloadItem |
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487 * @param RHttpDownload aDownload |
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488 */ |
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489 void DoAssignImageDataL(const CSVGTViewerAppDownloads* aDownloadItem, |
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490 RHttpDownload& aDownload); |
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491 |
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492 void DoAssignLocalFileDataL( const TDesC& aOriginalUri, const TDesC& aNewUri ) const; |
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493 HBufC8* DoGetProcessedEmbededDataL( const TDesC& aXlinkHrefValue ) const; |
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494 |
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495 private: // Data |
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496 |
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497 #ifdef SVGTVIEWERAPP_DOWNLOADMGR_ENABLED |
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498 // To start a wait loop after initiating download |
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499 CActiveSchedulerWait iWait; |
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500 |
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501 // client side handle for the download manager |
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502 RHttpDownloadMgr iDownloadMgr; |
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503 |
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504 // Handle for download manager ui user interactions |
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505 CDownloadMgrUiUserInteractions* iDMgrUserInteractions; |
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506 |
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507 // Handle for download manager ui downloads list |
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508 CDownloadMgrUiDownloadsList* iDMgrDownloadsList; |
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509 |
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510 // Handle to register download manager UI |
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511 CDownloadMgrUiLibRegistry* iDMgrUiReg; |
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512 |
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513 // Head of Doubly linked list of Downloads |
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514 TDblQue<CSVGTViewerAppDownloads> iDownloads; |
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515 |
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516 // Iterator for the doubly linked list |
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517 TDblQueIter<CSVGTViewerAppDownloads> iDownloadIter; |
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518 |
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519 // Flag to check whether downloads menu is enabled or not |
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520 TBool iDownloadMenuEnabled; |
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521 |
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522 // Flag to check whether synchronous download is stopped |
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523 TBool iSynchronousDownloadStopped; |
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524 #endif |
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525 // Pointer to the SVGT Dialog |
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526 CSVGTUIDialog* iAppDialog; |
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527 |
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528 //File Manager used for file save operations. |
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529 CSVGTFileManager* iFileManager; |
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530 |
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531 TBool iIsFullFilePathValid; |
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532 TBool iCanSaveContent; |
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533 TBool iShouldMoveContent; |
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534 HBufC* iSvgFileName; |
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535 HBufC* iSvgDstFileName; |
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536 RFile* iSvgFileId; |
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537 CAknProgressDialog* iWaitNote; |
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538 |
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539 // enumeration to store the state in which the wait note is used. |
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540 TWaitNoteState iWaitNoteState; |
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541 |
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542 CEikProgressInfo* iProgressInfo; |
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543 |
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544 // Integer storing resource offset to DLL resource file |
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545 TInt iResourceOffset; |
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546 |
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547 // Boolean indicating save done |
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548 TBool iSavingDone; |
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549 |
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550 // Integer to store the command id in context while saving |
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551 TInt iCommandId; |
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552 |
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553 // DocHandler pointer to Open embedded files |
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554 CDocumentHandler* iDocHandler; |
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555 |
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556 // pointer to CEikonEnv |
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557 CEikonEnv* iEikEnv; |
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558 //TBool iIsFetchImageCall; |
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559 |
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560 // Boolean to remember whether original file is to be |
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561 // deleted after save |
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562 TBool iDeleteOrigFile; |
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563 |
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564 // Boolean to remember whether temp file was used |
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565 // to perform cleanup |
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566 TBool iTempFileUsed; |
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567 |
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568 // Used for storing the temporary file name for deletion |
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569 HBufC* iTempFileName; |
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570 // Used to indicate whether we are attempting to overwrite existing |
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571 // file |
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572 TBool iIsOverwriteCase; |
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573 TBool iDownloadDone; |
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574 |
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575 // This variable tracks whether the download manager was initialised or not |
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576 TBool iDownloadInProgress; |
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577 |
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578 }; |
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579 |
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580 #endif // SVGTAPPOBSERVERUTIL_H |
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581 // End of File |