highlight reference field in Database view

src/core/Entry.cpp

@@ -254,6 +254,17 @@ bool Entry::isExpired() const
     return m_data.timeInfo.expires() && m_data.timeInfo.expiryTime() < QDateTime::currentDateTimeUtc();
 }
 
+bool Entry::hasReferences() const
+{
+    const QList<QString> keyList = EntryAttributes::DefaultAttributes;
+    for (const QString& key : keyList) {
+        if (m_attributes->isReference(key)) {
+            return true;
+        }
+    }
+    return false;
+}
+
 EntryAttributes* Entry::attributes()
 {
     return m_attributes;

src/core/Entry.h

@@ -79,6 +79,7 @@ public:
     QString password() const;
     QString notes() const;
     bool isExpired() const;
+    bool hasReferences() const;
     EntryAttributes* attributes();
     const EntryAttributes* attributes() const;
     EntryAttachments* attachments();

src/core/EntryAttributes.cpp

@@ -69,6 +69,21 @@ bool EntryAttributes::isProtected(const QString& key) const
     return m_protectedAttributes.contains(key);
 }
 
+bool EntryAttributes::isReference(const QString& key) const
+{
+    if (!m_attributes.contains(key)) {
+        Q_ASSERT(false);
+        return false;
+    }
+
+    QString data = value(key);
+    QRegExp referenceRegExp("\\{REF:([TUPAN])@I:([^}]+)\\}", Qt::CaseInsensitive, QRegExp::RegExp2);
+    if (referenceRegExp.indexIn(data) != -1) {
+        return true;
+    }
+    return false;
+}
+
 void EntryAttributes::set(const QString& key, const QString& value, bool protect)
 {
     bool emitModified = false;

src/core/EntryAttributes.h

@@ -35,6 +35,7 @@ public:
     QString value(const QString& key) const;
     bool contains(const QString& key) const;
     bool isProtected(const QString& key) const;
+    bool isReference(const QString& key) const;
     void set(const QString& key, const QString& value, bool protect = false);
     void remove(const QString& key);
     void rename(const QString& oldKey, const QString& newKey);