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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtDeclarative module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qdeclarativeinfo.h" |
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43 |
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44 #include "private/qdeclarativedata_p.h" |
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45 #include "qdeclarativecontext.h" |
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46 #include "private/qdeclarativecontext_p.h" |
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47 #include "private/qdeclarativemetatype_p.h" |
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48 #include "private/qdeclarativeengine_p.h" |
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49 |
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50 #include <QCoreApplication> |
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51 |
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52 QT_BEGIN_NAMESPACE |
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53 |
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54 /*! |
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55 \fn QDeclarativeInfo qmlInfo(const QObject *object) |
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56 |
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57 \brief Prints warnings messages that include the file and line number for QML types. |
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58 |
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59 When QML types display warning messages, it improves traceability |
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60 if they include the QML file and line number on which the |
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61 particular instance was instantiated. |
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62 |
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63 To include the file and line number, an object must be passed. If |
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64 the file and line number is not available for that instance |
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65 (either it was not instantiated by the QML engine or location |
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66 information is disabled), "unknown location" will be used instead. |
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67 |
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68 For example, |
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69 |
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70 \code |
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71 qmlInfo(object) << tr("component property is a write-once property"); |
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72 \endcode |
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73 |
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74 prints |
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75 |
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76 \code |
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77 QML MyCustomType (unknown location): component property is a write-once property |
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78 \endcode |
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79 */ |
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80 |
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81 class QDeclarativeInfoPrivate |
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82 { |
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83 public: |
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84 QDeclarativeInfoPrivate() : ref (1), object(0) {} |
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85 |
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86 int ref; |
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87 const QObject *object; |
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88 QString buffer; |
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89 QList<QDeclarativeError> errors; |
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90 }; |
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91 |
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92 QDeclarativeInfo::QDeclarativeInfo(QDeclarativeInfoPrivate *p) |
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93 : QDebug(&p->buffer), d(p) |
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94 { |
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95 nospace(); |
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96 } |
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97 |
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98 QDeclarativeInfo::QDeclarativeInfo(const QDeclarativeInfo &other) |
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99 : QDebug(other), d(other.d) |
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100 { |
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101 d->ref++; |
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102 } |
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103 |
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104 QDeclarativeInfo::~QDeclarativeInfo() |
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105 { |
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106 if (0 == --d->ref) { |
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107 QList<QDeclarativeError> errors = d->errors; |
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108 |
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109 QDeclarativeEngine *engine = 0; |
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110 |
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111 if (!d->buffer.isEmpty()) { |
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112 QDeclarativeError error; |
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113 |
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114 QObject *object = const_cast<QObject *>(d->object); |
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115 |
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116 if (object) { |
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117 engine = qmlEngine(d->object); |
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118 QString typeName; |
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119 QDeclarativeType *type = QDeclarativeMetaType::qmlType(object->metaObject()); |
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120 if (type) { |
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121 typeName = QLatin1String(type->qmlTypeName()); |
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122 int lastSlash = typeName.lastIndexOf(QLatin1Char('/')); |
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123 if (lastSlash != -1) |
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124 typeName = typeName.mid(lastSlash+1); |
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125 } else { |
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126 typeName = QString::fromUtf8(object->metaObject()->className()); |
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127 int marker = typeName.indexOf(QLatin1String("_QMLTYPE_")); |
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128 if (marker != -1) |
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129 typeName = typeName.left(marker); |
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130 } |
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131 |
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132 d->buffer.prepend(QLatin1String("QML ") + typeName + QLatin1String(": ")); |
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133 |
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134 QDeclarativeData *ddata = QDeclarativeData::get(object, false); |
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135 if (ddata && ddata->outerContext && !ddata->outerContext->url.isEmpty()) { |
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136 error.setUrl(ddata->outerContext->url); |
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137 error.setLine(ddata->lineNumber); |
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138 error.setColumn(ddata->columnNumber); |
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139 } |
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140 } |
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141 |
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142 error.setDescription(d->buffer); |
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143 |
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144 errors.prepend(error); |
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145 } |
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146 |
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147 QDeclarativeEnginePrivate::warning(engine, errors); |
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148 |
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149 delete d; |
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150 } |
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151 } |
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152 |
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153 QDeclarativeInfo qmlInfo(const QObject *me) |
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154 { |
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155 QDeclarativeInfoPrivate *d = new QDeclarativeInfoPrivate; |
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156 d->object = me; |
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157 return QDeclarativeInfo(d); |
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158 } |
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159 |
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160 QDeclarativeInfo qmlInfo(const QObject *me, const QDeclarativeError &error) |
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161 { |
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162 QDeclarativeInfoPrivate *d = new QDeclarativeInfoPrivate; |
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163 d->object = me; |
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164 d->errors << error; |
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165 return QDeclarativeInfo(d); |
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166 } |
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167 |
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168 QDeclarativeInfo qmlInfo(const QObject *me, const QList<QDeclarativeError> &errors) |
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169 { |
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170 QDeclarativeInfoPrivate *d = new QDeclarativeInfoPrivate; |
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171 d->object = me; |
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172 d->errors = errors; |
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173 return QDeclarativeInfo(d); |
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174 } |
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175 |
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176 |
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177 QT_END_NAMESPACE |