Use the rich text char format to store mentions rather than a separate structure in ChatBarCache.

This removes mentions from ChatBarCache and instead sets mentions as an anchor using the QTextCursor. Saving and restoring the chatbar text content is then done using QTextDocumentFragments which retain the rich text formatting.

src/libneochat/chatbarcache.h

@@ -8,22 +8,13 @@
 #include <QQuickTextDocument>
 #include <QTextCursor>
 
+#include "blockcache.h"
+
 namespace Quotient
 {
 class RoomMember;
 }
 
-/**
- * @brief Defines a user mention in the current chat or edit text.
- */
-struct Mention {
-    QTextCursor cursor; /**< Contains the mention's text and position in the text.  */
-    QString text; /**< The inserted text of the mention. */
-    int start = 0; /**< Start position of the mention. */
-    int position = 0; /**< End position of the mention. */
-    QString id; /**< The id the mention (used to create link when sending the message). */
-};
-
 /**
  * @class ChatBarCache
  *
@@ -147,6 +138,8 @@ public:
 
     explicit ChatBarCache(QObject *parent = nullptr);
 
+    Block::Cache &cache();
+
     QString text() const;
     QString sendText() const;
     void setText(const QString &text);
@@ -178,11 +171,6 @@ public:
      */
     Q_INVOKABLE void clearRelations();
 
-    /**
-     * @brief Retrieve the mentions for the current chat bar text.
-     */
-    QList<Mention> *mentions();
-
     /**
      * @brief Get the saved chat bar text.
      */
@@ -209,14 +197,14 @@ Q_SIGNALS:
     void relationAuthorIsPresentChanged();
 
 private:
+    Block::Cache m_cache;
+
     QString m_text = QString();
-    QString formatMentions() const;
 
     QString m_relationId = QString();
     RelationType m_relationType = RelationType::None;
     QString m_threadId = QString();
     QString m_attachmentPath = QString();
-    QList<Mention> m_mentions;
     QString m_savedText;
 
     void clearCache();