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1 /* |
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2 * Copyright (c) 2002 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 the License "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 * Declaration of class CBrowserFavouritesModel. |
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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 |
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21 #ifndef BROWSER_FAVOURITES_MODEL_H |
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22 #define BROWSER_FAVOURITES_MODEL_H |
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23 |
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24 // INCLUDES |
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25 |
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26 #include <e32base.h> |
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27 #include <FavouritesDbObserver.h> |
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28 #include "BrowserBookmarksOrder.h" |
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29 #include "FavouritesDb.h" |
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30 #include "FavouritesFile.h" |
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31 #include "ApiProvider.h" |
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32 |
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33 // FORWARD DECLARATION |
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34 |
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35 class CFavouritesItemList; |
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36 class CActiveFavouritesDbNotifier; |
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37 class MBrowserFavouritesModelObserver; |
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38 class CFavouritesItem; |
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39 |
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40 // CLASS DECLARATION |
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41 |
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42 /** |
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43 * Model for the Favourites Views of the WML Browser. |
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44 * This is a layer above the actual engines that do the data manipulation; |
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45 * and provides UI support for that (i.e. dialogs, notes etc.) |
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46 * Pure virtual. |
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47 */ |
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48 class CBrowserFavouritesModel: public CBase, public MFavouritesDbObserver |
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49 { |
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50 |
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51 public: // types |
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52 |
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53 /** |
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54 * Answer for database queries. |
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55 */ |
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56 enum TDbQuery |
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57 { |
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58 EYes, ///< Answer to query is yes. |
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59 ENo, ///< Answer to query is no. |
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60 EError ///< Could not get answer (i.e. database is busy etc.). |
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61 }; |
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62 |
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63 /** |
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64 * Rename mode for adding / updating items (what to do if an item |
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65 * to be added / updated in the database has a conflicting name). |
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66 */ |
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67 enum TRenameMode |
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68 { |
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69 EAutoRename, ///< Rename silently. |
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70 EDontRename, ///< Do not rename (quit operation). |
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71 EAskIfRename ///< Ask user. |
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72 }; |
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73 |
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74 public: // construction |
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75 |
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76 /** |
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77 * Destructor. |
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78 */ |
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79 virtual ~CBrowserFavouritesModel(); |
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80 |
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81 public: // string resources |
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82 |
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83 /** |
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84 * Resource selector type for strings. |
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85 */ |
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86 enum TTextResourceType |
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87 { |
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88 EDefaultName, ///< Default name (e.g. "New Bookmark"). |
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89 ERenamePrompt, ///< Rename prompt (e.g. "New Folder:"). |
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90 ENewPrompt, ///< New prompt (e.g. "Folder name:"). |
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91 ESaved, ///< Saved note (e.g. "Bookmark saved"). |
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92 ENotSaved ///< Not saved note (e.g. "Bookmark not saved"). |
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93 }; |
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94 |
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95 /** |
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96 * Get resource id of some text for an item. |
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97 * @param aItem The item to get resource id for. |
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98 * @param aType Type of resource text. |
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99 * @return Resource id of the text. |
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100 */ |
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101 virtual TInt StringResourceId |
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102 ( |
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103 const CFavouritesItem& aItem, |
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104 TTextResourceType aType |
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105 ) const = 0; |
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106 |
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107 /** |
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108 * Set the name of this item to default (e.g. "New Bookmark", |
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109 * "New Folder" etc.). The name that is set is read from resource, |
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110 * the resource id is StringResourceId( EDefaultName ). |
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111 * @param aItem The item to set default name for. |
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112 */ |
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113 void SetNameToDefaultL( CFavouritesItem& aItem ) const; |
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114 |
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115 public: // database opening / closing / access |
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116 |
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117 /** |
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118 * Open the database. |
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119 * After succesful open, notifications to observer may come. |
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120 * Safe to call if already open. |
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121 * @param aDbErrorNote If ETrue, unsuccesful open will bring up an |
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122 * error note. |
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123 * @return Error code. |
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124 */ |
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125 TInt OpenDbL( TBool aDbErrorNote = ETrue ); |
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126 |
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127 /** |
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128 * Close the database. No further notification may come to the |
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129 * observer. |
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130 */ |
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131 void CloseDb(); |
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132 |
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133 /** |
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134 * Start a transaction. |
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135 * @param aWrite If ETrue, the table is opened with write-lock on. |
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136 * @param aDbErrorNote If ETrue, unsuccesful open will bring up an |
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137 * error note. |
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138 * @param aLffsCheck If ETrue (the default), free disk space is |
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139 * checked to be above critical level (only if aWrite==ETrue). |
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140 * Always use the default (except for deleting)! |
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141 * @return Error code. |
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142 */ |
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143 TInt BeginL |
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144 ( TBool aWrite, TBool aDbErrorNote, TBool aLffsCheck = ETrue); |
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145 |
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146 /** |
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147 * Commit the transaction. |
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148 * Safe to call if not open. |
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149 */ |
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150 void CommitL(); |
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151 |
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152 /** |
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153 * Add an observer. |
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154 * @param aObserver Observer to be notified about database-related |
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155 * events. |
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156 */ |
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157 void AddObserverL( MBrowserFavouritesModelObserver& aObserver ); |
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158 |
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159 /** |
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160 * Remove an observer. Panic if not added. |
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161 * @param aObserver The observer. |
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162 */ |
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163 void RemoveObserver( MBrowserFavouritesModelObserver& aObserver ); |
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164 |
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165 /** |
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166 * Get the database. |
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167 * @return The actual database. |
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168 */ |
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169 inline RFavouritesDb Database() const; |
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170 |
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171 /** |
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172 * Opens an item associated with aUid in aFavFile. |
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173 * @return Error code. |
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174 */ |
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175 |
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176 TInt OpenFavouritesFile ( RFavouritesFile & aFavFile, TInt aUid ); |
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177 |
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178 /** |
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179 * Opens an item associated with aUid in aFavFile for replacement. |
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180 * @return Error code. |
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181 */ |
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182 |
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183 TInt ReplaceFavouritesFile ( RFavouritesFile & aFavFile, TInt aUid ); |
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184 |
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185 |
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186 public: // database query / update |
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187 |
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188 /** |
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189 * Add an item (folder or bookmark) to the database. |
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190 * @param aItem Item to add. |
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191 * @param aDbErrorNote If ETrue, unsuccesful database open will bring up an |
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192 * error note. |
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193 * @param aRenameMode What to do in case of the name is conflicting. |
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194 * @return Error code. |
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195 */ |
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196 TInt AddL |
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197 ( |
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198 CFavouritesItem& aItem, |
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199 TBool aDbErrorNote, |
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200 TRenameMode aRenameMode |
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201 ); |
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202 |
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203 /** |
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204 * Update an item (folder or bookmark) in the database. |
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205 * @param aItem Item data. |
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206 * @param aUid Uid of item to be updated. |
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207 * @param aDbErrorNote If ETrue, unsuccesful database open will bring up |
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208 * an error note. |
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209 * @param aRenameMode What to do in case of the name is conflicting. |
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210 * @return Error code. |
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211 */ |
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212 TInt UpdateL |
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213 ( |
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214 CFavouritesItem& aItem, |
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215 TInt aUid, |
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216 TBool aDbErrorNote, |
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217 TRenameMode aRenameMode |
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218 ); |
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219 |
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220 /** |
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221 * Set Homepage. |
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222 * @param aItem Item containing Homepage data. |
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223 * @param aDbErrorNote If ETrue, unsuccesful database open will bring up an |
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224 * error note. |
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225 * @param aRenameMode What to do in case of the name is conflicting. |
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226 * @return Error code. |
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227 */ |
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228 TInt SetHomepageL |
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229 ( |
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230 CFavouritesItem& aItem, |
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231 TBool aDbErrorNote, |
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232 TRenameMode aRenameMode |
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233 ); |
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234 |
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235 /** |
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236 * Set Last Visited Page. |
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237 * @param aItem Item containing Homepage data. |
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238 * @param aDbErrorNote If ETrue, unsuccesful database open will bring up |
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239 * an error note. |
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240 * @param aRenameMode What to do in case of the name is conflicting. |
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241 * @return Error code. |
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242 */ |
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243 TInt SetLastVisitedL |
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244 ( |
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245 CFavouritesItem& aItem, |
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246 TBool aDbErrorNote, |
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247 TRenameMode aRenameMode |
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248 ); |
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249 |
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250 /** |
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251 * Check if there are any folders (except the root). |
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252 * @return EYes, ENo or EError (if could not access the database). |
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253 */ |
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254 TDbQuery AnyFoldersL(); |
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255 |
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256 /** |
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257 * Check if the given list of uids contains |
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258 * any folders that are not empty. |
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259 * @param aUids List of Uids to check. |
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260 * @return EYes if there are non-empty folder(s), ENo if not, |
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261 * EError if could not access the database. |
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262 */ |
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263 TDbQuery AnyNonEmptyFoldersL( CArrayFix<TInt>& aUids ); |
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264 |
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265 /** |
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266 * Get the ordinal number of this folder in the alphabetically sorted |
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267 * list of folders. Expects a transaction. |
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268 * @param aFolder The folder to find. |
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269 * @param aFolderCount On successful return, this will be set to the |
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270 * number of folders. |
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271 * @param On successful return, this will be set to the ordinal number |
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272 * of the given folder. |
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273 * @return Error code. |
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274 */ |
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275 TInt FolderInfoL |
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276 ( TInt aFolder, TInt& aFolderCount, TInt& aFolderIndex ); |
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277 |
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278 /** |
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279 * In the alphabetically sorted list of folders, get Uid of folder next |
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280 * to aFolder. Expects a transaction. |
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281 * @param aFolder Folder to start from. |
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282 * @param aForward If ETrue, get next; if EFalse, get previous. |
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283 * @return Uid of the next folder or KFavouritesNullUid in case of any |
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284 * error. |
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285 */ |
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286 TInt NextFolderL( TInt aFolder, TBool aForward ); |
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287 |
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288 /** |
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289 * Display a query for renaming this item. If the query is accepted, |
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290 * the item is renamed. |
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291 * @param aItem The item to rename. |
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292 * @param aItem New item, we do not rename. |
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293 * @return ETrue if the query is accepted and the item is renamed. |
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294 */ |
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295 TBool RenameQueryL( CFavouritesItem& aItem, TBool aNewItem ); |
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296 |
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297 /** |
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298 * Sort items in a list. |
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299 * @param aList List to sort. |
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300 */ |
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301 void SortL( CFavouritesItemList& aList ); |
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302 |
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303 public: // convenience methods |
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304 |
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305 /** |
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306 * Check if aItem has a unique name (in its parent folder), and if |
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307 * not, make its name unique. |
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308 * @param aItem Item to set a unique name for. |
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309 * @return Error code. |
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310 */ |
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311 TInt MakeUniqueNameL( CFavouritesItem& aItem ); |
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312 |
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313 protected: // new functions |
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314 |
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315 //MApiProvider& ApiProvider() const; |
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316 |
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317 public: // from MFavouritesDbObserver |
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318 |
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319 /** |
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320 * Handle database event. |
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321 * @param aEvent Database event. |
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322 */ |
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323 void HandleFavouritesDbEventL( RDbNotifier::TEvent aEvent ); |
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324 |
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325 void ManualSortL(TInt aFolder, CBrowserBookmarksOrder* aBMOrder, CArrayFixFlat<TInt>* aOrderArray, CFavouritesItemList* aItems); |
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326 |
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327 /** |
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328 * Adds the given uid to the last place in bookmarks list |
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329 * @param aUid The uid to add |
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330 * @param aOrderArray the array that stores uids in manual order |
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331 * @param aCurrentOrder the object that stores manual sorting data |
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332 */ |
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333 |
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334 void AddUidToLastPlaceL( TInt aUid , CArrayFixFlat<TInt>* aOrderArray, CBrowserBookmarksOrder* aCurrentOrder); |
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335 |
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336 protected : // construction |
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337 |
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338 /** |
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339 * Constructor. |
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340 */ |
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341 CBrowserFavouritesModel( MApiProvider& aApiProvider ); |
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342 |
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343 /** |
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344 * Second phase constructor. Leaves on failure. |
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345 */ |
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346 void ConstructL(); |
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347 |
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348 /** |
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349 * Returns with the underlying database's name. |
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350 * Derived classes must provide this method. |
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351 * @return The Database Engine's name. |
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352 */ |
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353 virtual const TDesC& GetDBName(); |
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354 |
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355 private: // implementation details |
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356 |
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357 /** |
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358 * Open the database. If unsuccesful, retry two more times in |
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359 * 0.2 secs interval. |
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360 * @return Error code. |
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361 */ |
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362 TInt TimedOpenDbL(); |
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363 |
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364 /** |
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365 * Start a transaction. If unsuccesful, retry two more times in |
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366 * 0.2 secs interval. |
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367 * @param aWrite If ETrue, the table is opened with write-lock on. |
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368 * @return Error code. |
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369 */ |
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370 TInt TimedBeginL( TBool aWrite ); |
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371 |
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372 /** |
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373 * Add/update an item (folder or item) in the database; factoring out |
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374 * the common code. |
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375 * @param aItem Item data. |
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376 * @param aUid |
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377 * - When KFavouritesNullUid, the item is added. |
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378 * - Otherwise, Uid of the item to be updated. |
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379 * @param aDbErrorNote If ETrue, unsuccesful database open will bring up |
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380 * an error note. |
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381 * @param aRenameMode What to do in case of the name is conflicting. |
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382 * @return Error code. |
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383 */ |
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384 TInt AddUpdateL |
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385 ( |
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386 CFavouritesItem& aItem, |
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387 TInt aUid, |
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388 TBool aDbErrorNote, |
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389 TRenameMode aRenameMode |
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390 ); |
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391 |
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392 /** |
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393 * Compare two descriptors (case insensitive). |
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394 * @since 3.2 |
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395 * @param aFirst first descriptor |
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396 * @param aSecond second descriptor |
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397 * @return ETrue if strings match, EFalse otherwise |
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398 */ |
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399 TBool CompareIgnoreCase( const TDesC& aFirst, const TDesC& aSecond ); |
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400 |
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401 |
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402 protected: |
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403 /** |
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404 * Get all folders in the root, sorted, and push it on the cleanup |
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405 * stack. No sanity check. Expects a transaction. |
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406 * @return List of folders. Owner is the caller. |
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407 */ |
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408 virtual CFavouritesItemList* GetFoldersSortedLC(); |
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409 |
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410 private: // observer support |
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411 |
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412 /** |
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413 * Call each observer's HandleFavouritesModelChangeL(). |
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414 */ |
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415 void NotifyObserversL(); |
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416 |
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417 private: // types |
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418 |
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419 enum TState ///< Database state. |
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420 { |
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421 EClosed, ///< Database is closed. |
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422 EOpen, ///< Database is open. |
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423 ECorrupt ///< Database is corrupted (and is closed) |
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424 }; |
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425 |
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426 private: // data |
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427 |
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428 /// Used database object. Owned. |
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429 |
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430 RFavouritesDb iDb; |
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431 RFavouritesSession iFavouritesSess; |
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432 /// Notifier object. Owned. |
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433 CActiveFavouritesDbNotifier* iNotifier; |
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434 /// Observers. Array owned, contents not. |
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435 CArrayPtrFlat<MBrowserFavouritesModelObserver>* iObservers; |
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436 /// Database state. |
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437 TState iState; |
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438 |
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439 MApiProvider& iApiProvider; |
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440 }; |
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441 |
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442 #include "BrowserFavouritesModel.inl" |
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443 |
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444 #endif |
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445 |
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446 // End of file |