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1 /* |
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2 * Copyright (c) 2006 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: Implementation for the CAknTreeItem 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 #include <aknappui.h> |
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20 #include <AknUtils.h> |
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21 #include <aknlayoutscalable_avkon.cdl.h> |
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22 |
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23 #include "akntreeitem.h" |
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24 #include "akntreenode.h" |
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25 #include "akntree.h" |
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26 |
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27 |
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28 // ======== MEMBER FUNCTIONS ======== |
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29 |
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30 // --------------------------------------------------------------------------- |
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31 // Destructor. |
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32 // --------------------------------------------------------------------------- |
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33 // |
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34 CAknTreeItem::~CAknTreeItem() |
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35 { |
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36 iParent = NULL; |
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37 } |
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38 |
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39 |
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40 // --------------------------------------------------------------------------- |
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41 // Returns pointer to the parent node. |
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42 // --------------------------------------------------------------------------- |
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43 // |
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44 const CAknTreeNode* CAknTreeItem::Parent() const |
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45 { |
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46 return iParent; |
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47 } |
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48 |
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49 |
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50 CAknTreeNode* CAknTreeItem::Parent() |
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51 { |
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52 return iParent; |
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53 } |
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54 |
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55 |
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56 // --------------------------------------------------------------------------- |
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57 // Sets the parent node. |
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58 // --------------------------------------------------------------------------- |
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59 // |
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60 void CAknTreeItem::SetParent( CAknTreeNode* aParent ) |
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61 { |
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62 __ASSERT_DEBUG( aParent != this, User::Invariant() ); |
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63 iParent = aParent; |
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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 // Returns pointer to the tree root. |
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69 // --------------------------------------------------------------------------- |
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70 // |
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71 CAknTree* CAknTreeItem::Root() const |
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72 { |
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73 return iParent ? iParent->Root() : NULL; |
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74 } |
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75 |
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76 |
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77 TInt CAknTreeItem::Level() const |
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78 { |
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79 return iParent ? iParent->Level() + 1 : 0; |
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80 } |
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81 |
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82 |
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83 // --------------------------------------------------------------------------- |
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84 // These virtual functions are intended for compensating the absence of |
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85 // dynamic casting. Default implementations return null pointers. |
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86 // --------------------------------------------------------------------------- |
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87 // |
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88 CAknTreeLeaf* CAknTreeItem::Leaf() |
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89 { |
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90 return NULL; |
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91 } |
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92 |
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93 |
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94 const CAknTreeLeaf* CAknTreeItem::Leaf() const |
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95 { |
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96 return NULL; |
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97 } |
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98 |
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99 |
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100 CAknTreeNode* CAknTreeItem::Node() |
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101 { |
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102 return NULL; |
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103 } |
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104 |
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105 |
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106 const CAknTreeNode* CAknTreeItem::Node() const |
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107 { |
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108 return NULL; |
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109 } |
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110 |
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111 |
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112 // --------------------------------------------------------------------------- |
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113 // Determines whether the object is an intance of CAknTreeLeaf with the |
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114 // virtual Leaf() method that should be overriden by CAknTreeLeaf class to |
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115 // return pointer to the object instead of null pointer. |
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116 // --------------------------------------------------------------------------- |
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117 // |
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118 TBool CAknTreeItem::IsLeaf() const |
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119 { |
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120 return Leaf() != NULL; |
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121 } |
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122 |
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123 |
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124 // --------------------------------------------------------------------------- |
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125 // Determines whether the object is an instance of CAknTreeNode with the |
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126 // virtual Node() method, that should be overriden by CAknTreeNode class to |
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127 // return pointer to the object instead of null pointer. |
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128 // --------------------------------------------------------------------------- |
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129 // |
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130 TBool CAknTreeItem::IsNode() const |
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131 { |
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132 return Node() != NULL; |
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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 // Gets the minimum size for the hierarchical list item from the layout data. |
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138 // --------------------------------------------------------------------------- |
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139 // |
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140 TSize CAknTreeItem::MinimumSize() const |
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141 { |
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142 TAknWindowLineLayout lineLayout = |
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143 AknLayoutScalable_Avkon::aid_size_min_hl_cp1().LayoutLine(); |
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144 TRect parentRect = iAvkonAppUi->ApplicationRect(); // Not according to LAF! |
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145 TAknLayoutRect layoutRect; |
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146 layoutRect.LayoutRect( parentRect, lineLayout ); |
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147 TRect minimumSize = layoutRect.Rect(); |
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148 return minimumSize.Size(); |
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149 } |
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150 |
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151 |
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152 // --------------------------------------------------------------------------- |
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153 // Empty implementation for pointer event handling. |
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154 // --------------------------------------------------------------------------- |
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155 // |
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156 void CAknTreeItem::HandlePointerEventL( const TPointerEvent& /*aPointerEvent*/, |
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157 const TRect& /*aItemRect*/ ) |
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158 { |
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159 } |
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160 |
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161 |
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162 // --------------------------------------------------------------------------- |
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163 // Static comparison function. |
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164 // --------------------------------------------------------------------------- |
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165 // |
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166 TInt CAknTreeItem::Compare( const CAknTreeItem& aFirst, |
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167 const CAknTreeItem& aSecond ) |
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168 { |
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169 CAknTree* root = aFirst.Root(); |
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170 if ( !root ) |
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171 { |
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172 root = aSecond.Root(); |
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173 } |
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174 |
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175 if ( root ) |
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176 { |
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177 return root->Compare( aFirst, aSecond ); |
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178 } |
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179 else |
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180 { |
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181 return NULL; |
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182 } |
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183 } |
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184 |
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185 |
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186 // --------------------------------------------------------------------------- |
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187 // Default C++ constructor. |
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188 // --------------------------------------------------------------------------- |
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189 // |
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190 CAknTreeItem::CAknTreeItem() |
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191 { |
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192 } |
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193 |
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194 |
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195 // --------------------------------------------------------------------------- |
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196 // Gets specified rectangle from the layout data. |
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197 // --------------------------------------------------------------------------- |
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198 // |
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199 TRect CAknTreeItem::RectFromLayout( const TRect& aParent, |
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200 const TAknWindowComponentLayout& aComponentLayout ) const |
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201 { |
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202 TAknLayoutRect layoutRect; |
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203 layoutRect.LayoutRect( aParent, aComponentLayout.LayoutLine() ); |
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204 return layoutRect.Rect(); |
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205 } |
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206 |
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207 |