Add convinience data retrieval method to QXmppBitsOfBinaryDataList

Author: jbruechert

src/base/QXmppBitsOfBinaryData.cpp

@@ -215,6 +215,24 @@ QXmppBitsOfBinaryDataList::QXmppBitsOfBinaryDataList() = default;
 QXmppBitsOfBinaryDataList::~QXmppBitsOfBinaryDataList() = default;
 
 /// \cond
+
+///
+/// \brief finds the data for a uri
+/// \param uri cid uri
+/// \return data belonging to the uri
+///
+/// \since QXmpp 1.5
+///
+const QXmppBitsOfBinaryData &QXmppBitsOfBinaryDataList::forCidUri(const QString &uri) const
+{
+    auto cid = QXmppBitsOfBinaryContentId::fromCidUrl(uri);
+    const auto thumbnailData = std::find_if(begin(), end(), [&](const auto &bobBlob) {
+        return bobBlob.cid() == cid;
+    });
+
+    return *thumbnailData;
+}
+
 void QXmppBitsOfBinaryDataList::parse(const QDomElement &element)
 {
     // clear previous data elements

src/base/QXmppBitsOfBinaryDataList.h

@@ -11,13 +11,16 @@
 
 class QDomElement;
 class QXmlStreamWriter;
+class QUrl;
 
 class QXMPP_EXPORT QXmppBitsOfBinaryDataList : public QVector<QXmppBitsOfBinaryData>
 {
 public:
     QXmppBitsOfBinaryDataList();
     ~QXmppBitsOfBinaryDataList();
 
+    const QXmppBitsOfBinaryData &forCidUri(const QString &uri) const;
+
     /// \cond
     void parse(const QDomElement &element);
     void toXml(QXmlStreamWriter *writer) const;