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1 module qt.core.QMetaObject;
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2
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3 import qt.QGlobal;
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4 import qt.core.QObject;
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5 import qt.QtdObject;
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6
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288
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7 import std.algorithm;
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8
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9 class Meta
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10 {
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11 string name;
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12 }
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13
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14 class MetaType : Meta
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15 {
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16 this()
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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 class MetaVariable : Meta
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22 {
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23 MetaType type;
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24 }
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25
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26 class MetaCallable : Meta { }
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27
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28 class MetaMethod : Meta { }
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29
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30 class QMetaArgument : MetaVariable { }
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31
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32 class QMetaMethod : MetaMethod
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33 {
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34 // QMetaArgument[] arguments;
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35 string signature;
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36 int indexOfMethod;
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37
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38 this(string signature_, int indexOfMethod_)
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39 {
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40 signature = signature_;
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41 indexOfMethod = indexOfMethod_;
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42 }
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43 }
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44
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45 class QMetaSignal : QMetaMethod
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46 {
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47 this(string signature_, int indexOfMethod_)
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48 {
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49 super(signature_, indexOfMethod_);
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50 }
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51 }
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52
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53 class QMetaSlot : QMetaMethod
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54 {
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55 this(string signature_, int indexOfMethod_)
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56 {
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57 super(signature_, indexOfMethod_);
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58 }
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59 }
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60
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61 class MetaObject : MetaType
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62 {
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63 MetaObject _base;
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64 }
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65
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66 struct QMetaObjectNative
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67 {
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68 QMetaObjectNative *superdata;
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69 immutable(char) *stringdata;
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70 const(uint) *data;
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71 void *extradata;
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72 }
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73
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253
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74 final class QMetaObject
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75 {
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288
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76 enum Call
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77 {
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78 InvokeMetaMethod,
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79 ReadProperty,
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80 WriteProperty,
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81 ResetProperty,
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82 QueryPropertyDesignable,
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83 QueryPropertyScriptable,
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84 QueryPropertyStored,
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85 QueryPropertyEditable,
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86 QueryPropertyUser,
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87 CreateInstance
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88 }
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89
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253
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90 private
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91 {
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92 QMetaObjectNative* _nativeId;
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93 QMetaObject _base; // super class
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94 QMetaObject _firstDerived; // head of the linked list of derived classes
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95 QMetaObject _next; // next sibling on this derivation level
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96 QMetaMethod[] _methods;
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97 ClassInfo _classInfo;
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98
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99 QObject function(void* nativeId) _createWrapper;
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100 }
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101
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102 private void addDerived(QMetaObject mo)
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103 {
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104 mo._next = _firstDerived;
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105 _firstDerived = mo;
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106 }
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107
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108 // NOTE: construction is split between this non-templated constructor and 'construct' function below.
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288
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109 this(QMetaObjectNative* nativeId, QMetaObject base)
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253
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110 {
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111 _nativeId = nativeId;
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112 if (base)
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113 {
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114 base.addDerived(this);
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115 _base = base;
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116 }
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117 }
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118
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119 // TODO: remove when D acquires templated constructors
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120 void construct(T : QObject, Concrete = T)()
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121 {
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122 _classInfo = T.classinfo;
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123
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124 _createWrapper = function QObject(void* nativeId) {
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125 // COMPILER BUG: cast is should not be needed
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126 auto obj = new Concrete(nativeId, cast(QtdObjectFlags)(QtdObjectFlags.nativeOwnership | QtdObjectFlags.dynamicEntity));
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127 // TODO: Probably this should be a virtual call from T's constructor
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128 T.__createEntity(nativeId, cast(void*)obj);
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129 return obj;
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130 };
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131 }
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132
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133 /++
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134 +/
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135 QMetaObject base()
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136 {
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137 return _base;
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138 }
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139
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140 /++
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141 +/
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288
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142 QMetaObjectNative* nativeId()
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253
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143 {
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144 return _nativeId;
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145 }
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146
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147 /++
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148 +/
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149 ClassInfo classInfo()
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150 {
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151 return _classInfo;
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152 }
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153
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288
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154 const (QMetaMethod[]) methods()
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155 {
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156 return _methods;
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157 }
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158
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159 void addMethod(QMetaMethod method_)
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160 {
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161 _methods ~= method_;
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162 }
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163
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164 int lookUpMethod(string slot)
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165 {
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166 foreach (method; _methods)
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167 if (method.signature == slot)
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168 return method.indexOfMethod;
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169 if (_base)
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170 return _base.lookUpMethod(slot);
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171 else
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172 return -1;
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173 }
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174
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175 int lookUpSignal(string signal)
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176 {
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177 // auto signalBegin = signal[0..$-1];
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178 foreach (method; _methods)
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179 if (method.signature == signal && cast(QMetaSignal)method)
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180 return method.indexOfMethod;
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181 if (_base)
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182 return _base.lookUpSignal(signal);
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183 else
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184 return -1;
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185 }
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186
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253
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187 private QMetaObject lookupDerived(void*[] moIds)
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188 {
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189 assert (moIds.length >= 1);
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190
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191 for (auto mo = _firstDerived; mo !is null; mo = mo._next)
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192 {
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193 if (mo._nativeId == moIds[0])
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194 {
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195 if (moIds.length == 1) // exact match found
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196 return mo;
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197 else // look deeper
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198 return mo.lookupDerived(moIds[1..$]);
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199 }
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200 }
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201
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202 // no initialized wrapper that matches the native object.
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203 // use the base class wrapper
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204 return this;
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205 }
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206
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207 QObject getObject(void* nativeObjId)
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208 {
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209 QObject result;
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210
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211 if (nativeObjId)
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212 {
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213 result = cast(QObject)qtd_get_d_qobject(nativeObjId);
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214 if (!result)
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215 {
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216 auto moId = qtd_QObject_metaObject(nativeObjId);
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217 if (_nativeId == moId)
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218 result = _createWrapper(nativeObjId);
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219 else
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220 {
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221 // get native metaobjects for the entire derivation lattice
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222 // up to, but not including, the current metaobject.
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223 size_t moCount = 1;
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224
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225 for (void* tmp = moId;;)
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226 {
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227 tmp = qtd_QMetaObject_superClass(tmp);
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228 assert(tmp);
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229 if (tmp == _nativeId)
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230 break;
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231 moCount++;
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232 }
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233
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234 void*[] moIds = (cast(void**)alloca(moCount * (void*).sizeof))[0..moCount];
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235
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236 moIds[--moCount] = moId;
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237 while (moCount > 0)
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238 moIds[--moCount] = moId = qtd_QMetaObject_superClass(moId);
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239
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240 result = lookupDerived(moIds)._createWrapper(nativeObjId);
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288
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241 }
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253
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242 }
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243 }
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244
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245 return result;
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246 }
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288
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247
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248 static void activate(QObject sender, QMetaObject m, int local_signal_index, void **argv)
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249 {
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250 qtd_QMetaObject_activate_3(sender.__nativeId, m.nativeId, local_signal_index, argv);
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251 }
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252
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253 static void activate(QObject sender, QMetaObject m, int from_local_signal_index, int to_local_signal_index, void **argv)
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254 {
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255 qtd_QMetaObject_activate_4(sender.__nativeId, m.nativeId, from_local_signal_index, to_local_signal_index, argv);
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256 }
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257
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258 static bool connect(const QObject sender, int signal_index,
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259 const QObject receiver, int method_index,
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260 int type = 0, int *types = null)
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261 {
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262 return qtd_QMetaObject_connect(sender.__nativeId, signal_index, receiver.__nativeId, method_index, type, types);
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263 }
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264
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265 int indexOfMethod_Cpp(string method)
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266 {
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267 return qtd_QMetaObject_indexOfMethod(_nativeId, toStringz(method));
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268 }
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269
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270 int methodCount()
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271 {
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272 return qtd_QMetaObject_methodCount(_nativeId);
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273 }
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274
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253
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275 }
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276
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288
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277 extern(C) void qtd_QMetaObject_activate_3(void* sender, void* m, int local_signal_index, void **argv);
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278 extern(C) void qtd_QMetaObject_activate_4(void *sender, void* m, int from_local_signal_index, int to_local_signal_index, void **argv);
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279 extern(C) bool qtd_QMetaObject_connect(const void* sender, int signal_index,
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280 const void* receiver, int method_index,
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281 int type, int *types);
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282
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283 extern(C) int qtd_QMetaObject_indexOfMethod(void *nativeId, const(char) *method);
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284 extern(C) int qtd_QMetaObject_methodCount(void *nativeId);
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285
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286 extern(C) void* qtd_QMetaObject_superClass(void* nativeId); |
