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method-invocation-context.h
1 
23 #ifndef _TelepathyQt_method_invocation_context_h_HEADER_GUARD_
24 #define _TelepathyQt_method_invocation_context_h_HEADER_GUARD_
25 
26 #ifndef IN_TP_QT_HEADER
27 #error IN_TP_QT_HEADER
28 #endif
29 
30 #include <QtDBus>
31 #include <QtCore>
32 
33 namespace Tp
34 {
35 
36 #ifndef DOXYGEN_SHOULD_SKIP_THIS
37 
38 namespace MethodInvocationContextTypes
39 {
40 
41 struct Nil
42 {
43 };
44 
45 template<int Index,
46  typename T1, typename T2, typename T3, typename T4,
47  typename T5, typename T6, typename T7, typename T8>
48 struct Select
49 {
50  typedef Select<Index - 1, T2, T3, T4, T5, T6, T7, T8, Nil> Next;
51  typedef typename Next::Type Type;
52 };
53 template<typename T1, typename T2, typename T3, typename T4,
54  typename T5, typename T6, typename T7, typename T8>
55 struct Select<0, T1, T2, T3, T4, T5, T6, T7, T8>
56 {
57  typedef T1 Type;
58 };
59 
60 template<typename T1, typename T2, typename T3, typename T4,
61  typename T5, typename T6, typename T7, typename T8>
62 struct ForEach
63 {
64  typedef ForEach<T2, T3, T4, T5, T6, T7, T8, Nil> Next;
65  enum { Total = Next::Total + 1 };
66 };
67 template<>
68 struct ForEach<Nil, Nil, Nil, Nil, Nil, Nil, Nil, Nil>
69 {
70  enum { Total = 0 };
71 };
72 
73 }
74 
75 #endif /* DOXYGEN_SHOULD_SKIP_THIS */
76 
77 template<typename T1 = MethodInvocationContextTypes::Nil, typename T2 = MethodInvocationContextTypes::Nil,
78  typename T3 = MethodInvocationContextTypes::Nil, typename T4 = MethodInvocationContextTypes::Nil,
79  typename T5 = MethodInvocationContextTypes::Nil, typename T6 = MethodInvocationContextTypes::Nil,
80  typename T7 = MethodInvocationContextTypes::Nil, typename T8 = MethodInvocationContextTypes::Nil>
82 {
83 #ifndef DOXYGEN_SHOULD_SKIP_THIS
84  template<int Index>
85  struct Select : MethodInvocationContextTypes::Select<Index, T1, T2, T3, T4, T5, T6, T7, T8>
86  {
87  };
88 
89  typedef MethodInvocationContextTypes::ForEach<T1, T2, T3, T4, T5, T6, T7, T8> ForEach;
90  enum { Count = ForEach::Total };
91 #endif /* DOXYGEN_SHOULD_SKIP_THIS */
92 
93 public:
94  MethodInvocationContext(const QDBusConnection &bus, const QDBusMessage &message)
95  : mBus(bus), mMessage(message), mFinished(false)
96  {
97  mMessage.setDelayedReply(true);
98  }
99 
101  {
102  if (!mFinished) {
103  setFinishedWithError(QString(), QString());
104  }
105  }
106 
107  bool isFinished() const { return mFinished; }
108  bool isError() const { return !mErrorName.isEmpty(); }
109  QString errorName() const { return mErrorName; }
110  QString errorMessage() const { return mErrorMessage; }
111 
112  void setFinished(const T1 &t1 = T1(), const T2 &t2 = T2(), const T3 &t3 = T3(),
113  const T4 &t4 = T4(), const T5 &t5 = T5(), const T6 &t6 = T6(),
114  const T7 &t7 = T7(), const T8 &t8 = T8())
115  {
116  if (mFinished) {
117  return;
118  }
119 
120  mFinished = true;
121 
122  setReplyValue(0, qVariantFromValue(t1));
123  setReplyValue(1, qVariantFromValue(t2));
124  setReplyValue(2, qVariantFromValue(t3));
125  setReplyValue(3, qVariantFromValue(t4));
126  setReplyValue(4, qVariantFromValue(t5));
127  setReplyValue(5, qVariantFromValue(t6));
128  setReplyValue(6, qVariantFromValue(t7));
129  setReplyValue(7, qVariantFromValue(t8));
130 
131  if (mReply.isEmpty()) {
132  mBus.send(mMessage.createReply());
133  } else {
134  mBus.send(mMessage.createReply(mReply));
135  }
136  onFinished();
137  }
138 
139  void setFinishedWithError(const QString &errorName,
140  const QString &errorMessage)
141  {
142  if (mFinished) {
143  return;
144  }
145 
146  mFinished = true;
147 
148  if (errorName.isEmpty()) {
149  mErrorName = QLatin1String("org.freedesktop.Telepathy.Qt.ErrorHandlingError");
150  } else {
151  mErrorName = errorName;
152  }
153  mErrorMessage = errorMessage;
154 
155  mBus.send(mMessage.createErrorReply(mErrorName, mErrorMessage));
156  onFinished();
157  }
158 
159  template<int Index> inline
160  typename Select<Index>::Type argumentAt() const
161  {
162  Q_ASSERT(Index >= 0 && Index < Count);
163  return qdbus_cast<typename Select<Index>::Type>(mReply.value(Index));
164  }
165 
166 protected:
167  virtual void onFinished() {}
168 
169 private:
170  Q_DISABLE_COPY(MethodInvocationContext)
171 
172  void setReplyValue(int index, const QVariant &value)
173  {
174  if (index >= Count) {
175  return;
176  }
177  mReply.insert(index, value);
178  }
179 
180  QDBusConnection mBus;
181  QDBusMessage mMessage;
182  bool mFinished;
183  QList<QVariant> mReply;
184  QString mErrorName;
185  QString mErrorMessage;
186 };
187 
188 } // Tp
189 
190 Q_DECLARE_METATYPE(Tp::MethodInvocationContextTypes::Nil)
191 
192 #endif
The RefCounted class is a base class for shared objects used by SharedPtr.
Definition: shared-ptr.h:42
virtual ~MethodInvocationContext()
Definition: method-invocation-context.h:100
QString errorName() const
Definition: method-invocation-context.h:109
void setFinishedWithError(const QString &errorName, const QString &errorMessage)
Definition: method-invocation-context.h:139
QString errorMessage() const
Definition: method-invocation-context.h:110
virtual void onFinished()
Definition: method-invocation-context.h:167
MethodInvocationContext(const QDBusConnection &bus, const QDBusMessage &message)
Definition: method-invocation-context.h:94
Select< Index >::Type argumentAt() const
Definition: method-invocation-context.h:160
Definition: abstract-adaptor.cpp:31
The MethodInvocationContext class provides a way for the service implementation to respond to method ...
Definition: method-invocation-context.h:81
bool isError() const
Definition: method-invocation-context.h:108
void setFinished(const T1 &t1=T1(), const T2 &t2=T2(), const T3 &t3=T3(), const T4 &t4=T4(), const T5 &t5=T5(), const T6 &t6=T6(), const T7 &t7=T7(), const T8 &t8=T8())
Definition: method-invocation-context.h:112
bool isFinished() const
Definition: method-invocation-context.h:107


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Telepathy-Qt 0.9.7