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: Implements the CLandmarksCategoriesContainer class |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 #include <aknsfld.h> |
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21 #include <AknQueryDialog.h> |
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22 #include <eikclbd.h> |
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23 #include <eikmenub.h> |
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24 |
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25 #include <EPos_CPosLandmarkCategory.h> |
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26 |
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27 #include <lmrefapp.rsg> |
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28 #include "LandmarksCategoriesContainer.h" |
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29 #include "LandmarksCommonData.h" |
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30 #include "LandmarksListbox.h" |
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31 #include "LandmarksListBoxModel.h" |
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32 #include "LandmarksApplicationEngine.h" |
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33 #include "LandmarksCategoriesModel.h" |
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34 |
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35 // ============================= LOCAL FUNCTIONS =============================== |
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36 |
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37 // ----------------------------------------------------------------------------- |
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38 // ResetAndDestroyCategories |
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39 // Resets and destroys an array of categories. This function is used as a |
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40 // TCleanupOperation in CLandmarksCategoriesModel. |
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41 // Params: aAny: The categories array to reset ands destroy |
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42 // ----------------------------------------------------------------------------- |
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43 // |
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44 void ResetAndDestroyCategories(TAny* aAny) |
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45 { |
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46 CArrayPtr<CPosLandmarkCategory>* categories = |
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47 reinterpret_cast <CArrayPtr<CPosLandmarkCategory>*> (aAny); |
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48 categories->ResetAndDestroy(); |
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49 } |
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50 |
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51 // ============================ MEMBER FUNCTIONS =============================== |
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52 |
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53 // ----------------------------------------------------------------------------- |
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54 // ----------------------------------------------------------------------------- |
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55 // |
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56 CLandmarksCategoriesContainer::CLandmarksCategoriesContainer( |
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57 CAknView& aView, |
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58 CLandmarksApplicationEngine& aEngine, |
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59 CEikMenuBar& aMenuBar) |
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60 : CLandmarksContainerBase(aView, aEngine), |
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61 iMenuBar(aMenuBar) |
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62 { |
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63 } |
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64 |
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65 // ----------------------------------------------------------------------------- |
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66 // ----------------------------------------------------------------------------- |
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67 // |
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68 void CLandmarksCategoriesContainer::ConstructL( |
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69 const TRect& aRect) |
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70 { |
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71 // Create listbox and findbox. |
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72 CLandmarksContainerBase::ConstructL(aRect); |
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73 |
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74 // Start observer db events. |
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75 iEngine.AddDbObserverL(this); |
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76 |
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77 // Create data model. |
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78 iModel = CLandmarksCategoriesModel::NewL(); |
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79 |
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80 // Create a descriptor array that will contain the landmark names and |
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81 // icon indeces. |
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82 CLandmarksListBoxModel* listBoxModel = iListBox->Model(); |
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83 listBoxModel->SetItemTextArray(iModel->ItemList()); |
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84 listBoxModel->SetOwnershipType(ELbmDoesNotOwnItemArray); |
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85 |
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86 // Create an icon array the will be displayed in the listbox. |
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87 |
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88 CIconList* icons = iModel->CreateIconListL(); |
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89 iListBox->ItemDrawer()->ColumnData()->SetIconArray(icons); |
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90 |
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91 // Observe listbox for state changes. |
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92 iListBox->SetObserver(this); |
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93 |
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94 // Observe findbox for state changes. |
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95 iFindBox->SetObserver(this); |
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96 |
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97 // Populate listbox with categories and icons. |
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98 StartUpdateListBoxL(); |
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99 } |
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100 |
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101 // ----------------------------------------------------------------------------- |
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102 // ----------------------------------------------------------------------------- |
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103 // |
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104 CLandmarksCategoriesContainer::~CLandmarksCategoriesContainer() |
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105 { |
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106 delete iModel; |
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107 } |
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108 |
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109 // ----------------------------------------------------------------------------- |
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110 // ----------------------------------------------------------------------------- |
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111 // |
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112 void CLandmarksCategoriesContainer::DeleteCategoryL() |
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113 { |
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114 // Format query. |
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115 HBufC* queryFormat = |
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116 iCoeEnv->AllocReadResourceAsDes16LC(R_LMREFAPP_DELETE_CATEGORY); |
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117 |
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118 CPosLandmarkCategory* category = iEngine.CategoryLC(CurrentCategoryId()); |
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119 TPtrC name; |
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120 category->GetCategoryName(name); |
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121 |
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122 HBufC* query = HBufC::NewLC(name.Length() + queryFormat->Length()); |
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123 query->Des().Format(*queryFormat, &name); |
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124 |
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125 // Launch dialog. |
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126 CAknQueryDialog* queryDialog = CAknQueryDialog::NewL(); |
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127 if (queryDialog->ExecuteLD(R_LMREFAPP_GENERAL_QUERY, *query)) |
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128 { |
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129 // Delete category if positive response. |
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130 iEngine.DeleteCategoryL(category->CategoryId()); |
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131 } |
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132 CleanupStack::PopAndDestroy(3, queryFormat); |
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133 } |
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134 |
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135 // ----------------------------------------------------------------------------- |
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136 // ----------------------------------------------------------------------------- |
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137 // |
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138 TPosLmItemId CLandmarksCategoriesContainer::CurrentCategoryId() |
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139 { |
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140 return iModel->CurrentItemId(); |
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141 } |
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142 |
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143 // ----------------------------------------------------------------------------- |
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144 // ----------------------------------------------------------------------------- |
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145 // |
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146 TBool CLandmarksCategoriesContainer::IsGlobalL() |
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147 { |
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148 CPosLandmarkCategory* category = iEngine.CategoryLC(CurrentCategoryId()); |
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149 TBool isGlobal = (category->GlobalCategory() != KPosLmNullGlobalCategory); |
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150 CleanupStack::PopAndDestroy(category); |
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151 |
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152 return isGlobal; |
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153 } |
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154 |
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155 // ----------------------------------------------------------------------------- |
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156 // ----------------------------------------------------------------------------- |
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157 // |
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158 TKeyResponse CLandmarksCategoriesContainer::OfferKeyEventL( |
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159 const TKeyEvent& aKeyEvent, TEventCode aType) |
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160 { |
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161 TKeyResponse response = EKeyWasNotConsumed; |
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162 |
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163 switch (aKeyEvent.iCode) |
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164 { |
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165 case EKeyUpArrow: |
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166 case EKeyDownArrow: |
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167 // Scrolling the listbox. Forward to iListBox. |
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168 response = iListBox->OfferKeyEventL(aKeyEvent, aType); |
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169 break; |
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170 |
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171 case EKeyDevice3: |
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172 // Select key pressed. Display menu. |
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173 iMenuBar.SetMenuTitleResourceId(R_LMREFAPP_CATEGORIES_MENUBAR); |
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174 iMenuBar.TryDisplayMenuBarL(); |
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175 response = EKeyWasConsumed; |
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176 break; |
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177 |
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178 case EKeyBackspace: |
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179 if (iFindBox->TextLength() == 0 && |
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180 IsItemSelected() && |
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181 !IsGlobalL()) |
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182 { |
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183 // If there is no text in the search field backspace will |
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184 // delete a category. |
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185 DeleteCategoryL(); |
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186 response = EKeyWasConsumed; |
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187 break; |
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188 } |
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189 // erase character in find box |
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190 default: |
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191 // Forward to findbox. |
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192 response = iFindBox->OfferKeyEventL(aKeyEvent, aType); |
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193 break; |
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194 } |
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195 |
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196 return response; |
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197 } |
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198 |
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199 // ----------------------------------------------------------------------------- |
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200 // ----------------------------------------------------------------------------- |
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201 // |
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202 void CLandmarksCategoriesContainer::NotifyOperationProgressL( |
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203 TOperation aOperation, |
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204 TInt /*aProgress*/, |
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205 TInt aErrorCode) |
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206 { |
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207 switch (aOperation) |
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208 { |
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209 case ECategorySearch: |
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210 HandleSearchReadyL(aErrorCode); |
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211 break; |
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212 |
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213 case ECategoryRead: |
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214 HandleReadReadyL(aErrorCode); |
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215 break; |
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216 |
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217 default: |
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218 break; |
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219 } |
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220 } |
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221 |
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222 // ----------------------------------------------------------------------------- |
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223 // ----------------------------------------------------------------------------- |
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224 // |
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225 void CLandmarksCategoriesContainer::NotifyDbEventL( |
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226 TPosLmEvent& aEvent, |
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227 TInt aErrorCode) |
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228 { |
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229 if (aErrorCode == KErrNone) |
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230 { |
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231 switch (aEvent.iEventType) |
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232 { |
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233 case EPosLmEventUnknownChanges: |
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234 case EPosLmEventLandmarkUnknownChanges: |
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235 case EPosLmEventCategoryUnknownChanges: |
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236 // Any of the events below might have cancelled an ongoing |
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237 // categories search/read operation => we must restart refreshing listbox |
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238 case EPosLmEventLandmarkCreated: |
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239 case EPosLmEventLandmarkDeleted: |
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240 case EPosLmEventLandmarkUpdated: |
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241 case EPosLmEventCategoryCreated: |
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242 case EPosLmEventCategoryDeleted: |
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243 case EPosLmEventCategoryUpdated: |
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244 StartUpdateListBoxL(); |
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245 break; |
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246 case EPosLmEventNewDefaultDatabaseLocation: |
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247 // Not supported by this application |
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248 break; |
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249 case EPosLmEventMediaRemoved: |
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250 // Not supported by this application |
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251 break; |
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252 default: |
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253 // Ignore other non-category events |
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254 break; |
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255 } |
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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 // ----------------------------------------------------------------------------- |
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261 // |
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262 void CLandmarksCategoriesContainer::HandleControlEventL( |
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263 CCoeControl* aControl, |
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264 TCoeEvent aEventType) |
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265 { |
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266 if (aEventType == EEventStateChanged && aControl == iListBox) |
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267 { |
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268 // Take the index of the current item in the list |
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269 TInt itemIndex = iListBox->CurrentItemIndex(); |
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270 |
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271 // Set the current item in the model object regarding to the list box. |
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272 iModel->SetCurrentItem(itemIndex); |
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273 } |
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274 |
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275 if (aEventType == EEventStateChanged && aControl == iFindBox) |
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276 { |
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277 // Fetch filter from search field |
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278 TInt searchTextLength = iFindBox->TextLength(); |
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279 HBufC* filterBuf = HBufC::NewLC(searchTextLength); |
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280 TPtr filter = filterBuf->Des(); |
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281 iFindBox->GetSearchText(filter); |
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282 |
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283 // If filter has changed repopulate list box. (It is necessary to check |
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284 // if filter has changed since each filter change generates several |
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285 // EEventStateChanged events for find box) |
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286 if (filter != *iOldFilter) |
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287 { |
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288 // Filter has changed. Start filtering. |
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289 StartUpdateListBoxL(); |
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290 } |
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291 |
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292 CleanupStack::PopAndDestroy(filterBuf); |
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293 } |
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294 } |
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295 |
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296 // ----------------------------------------------------------------------------- |
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297 // ----------------------------------------------------------------------------- |
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298 // |
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299 void CLandmarksCategoriesContainer::StartUpdateListBoxL() |
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300 { |
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301 // Fetch filter from search field |
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302 TInt searchTextLength = iFindBox->TextLength(); |
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303 const TInt KExtraChars = 2; // 2 chars wildcards |
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304 HBufC* filterBuf = HBufC::NewLC(searchTextLength + KExtraChars); |
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305 TPtr filter = filterBuf->Des(); |
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306 iFindBox->GetSearchText(filter); |
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307 |
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308 // Find out if there is any prevoius result to limit the search to |
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309 TInt oldFilterLength = iOldFilter->Length(); |
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310 TBool searchOnlyInPreviousMatches = |
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311 // If previous filter is empty there is no search results |
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312 oldFilterLength > 0 && |
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313 |
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314 // If chars have been removed from filter we abandon previous results |
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315 filter.Length() > oldFilterLength && |
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316 |
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317 // There must exist at least one previous match |
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318 IsItemSelected(); |
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319 |
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320 // old filter used - now we can update it |
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321 delete iOldFilter; |
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322 iOldFilter = NULL; |
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323 iOldFilter = filter.AllocL(); |
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324 |
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325 // Start to asynchronously populate the listbox model according to filter |
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326 if (filter.Length() == 0) |
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327 { |
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328 iEngine.StartSearchingCategoriesL(this); |
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329 } |
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330 else |
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331 { |
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332 filter.Append(KWildCard); |
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333 iEngine.StartSearchingCategoriesL( |
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334 filter, |
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335 searchOnlyInPreviousMatches, |
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336 this); |
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337 } |
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338 |
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339 CleanupStack::PopAndDestroy(filterBuf); |
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340 } |
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341 |
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342 // ----------------------------------------------------------------------------- |
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343 // ----------------------------------------------------------------------------- |
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344 // |
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345 void CLandmarksCategoriesContainer::HandleSearchReadyL(TInt aErrorCode) |
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346 { |
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347 |
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348 // Delete old icon array and add new |
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349 CColumnListBoxData* columnData = iListBox->ItemDrawer()->ColumnData(); |
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350 CArrayPtr<CGulIcon>* iconList = columnData->IconArray(); |
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351 iconList->ResetAndDestroy(); |
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352 delete iconList; |
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353 columnData->SetIconArray(iModel->CreateIconListL()); |
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354 |
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355 if (aErrorCode == KErrNone) |
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356 { |
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357 // Update model |
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358 iModel->SetItemIds(iEngine.FetchCategorySearchResult()); |
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359 iListBox->HandleItemRemovalL(); |
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360 |
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361 iEngine.StartReadingCategoriesL(KNrOfItemsDisplayed, this); |
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362 iReadingFirstPage = ETrue; |
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363 } |
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364 else if (aErrorCode == KErrNotFound) |
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365 { |
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366 // Update model (indicate no item is selected) |
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367 iModel->SetItemIds(NULL); |
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368 iModel->SetCurrentItem(iListBox->CurrentItemIndex()); |
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369 |
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370 // Update the listbox |
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371 iListBox->HandleItemRemovalL(); |
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372 iListBox->DrawDeferred(); |
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373 } |
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374 } |
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375 |
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376 // ----------------------------------------------------------------------------- |
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377 // ----------------------------------------------------------------------------- |
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378 // |
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379 void CLandmarksCategoriesContainer::HandleReadReadyL( |
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380 TInt aErrorCode) |
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381 { |
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382 // Update model with new categories |
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383 CArrayPtr<CPosLandmarkCategory>* categories = iEngine.FetchCategoriesLC(); |
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384 CleanupStack::PushL(TCleanupItem(ResetAndDestroyCategories, categories)); |
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385 iModel->RepopulateModelL(categories); |
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386 CleanupStack::PopAndDestroy(2, categories); |
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387 |
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388 if (aErrorCode == KErrNone) |
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389 { |
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390 if (iReadingFirstPage) |
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391 { |
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392 // First page ready |
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393 iReadingFirstPage = EFalse; |
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394 |
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395 // Add the first page |
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396 iListBox->HandleItemAdditionL(); |
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397 |
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398 // Set the first item selected by default. We must do this since |
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399 // HandleItemRemovalL in HandleSearchReadyL resets the listbox. |
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400 iModel->SetCurrentItem(0); |
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401 iListBox->SetCurrentItemIndex(0); |
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402 } |
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403 else |
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404 { |
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405 iListBox->HandleItemAdditionL(); |
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406 } |
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407 } |
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408 } |
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409 |
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410 |
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