message preview refactor, several bugs about label size, animations are now playing in previews

ui/widgets/messageline/messagefeed.h

@@ -0,0 +1,199 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MESSAGEFEED_H
+#define MESSAGEFEED_H
+
+#include <QAbstractListModel>
+#include <QDateTime>
+#include <QString>
+
+#include <set>
+
+#include <boost/multi_index_container.hpp>
+#include <boost/multi_index/ordered_index.hpp>
+#include <boost/multi_index/ranked_index.hpp>
+#include <boost/multi_index/mem_fun.hpp>
+
+#include <shared/message.h>
+#include <shared/icons.h>
+
+
+namespace Models {
+    class Element;
+    struct Attachment;
+    
+class MessageFeed : public QAbstractListModel
+{
+    Q_OBJECT
+public:    
+    enum SyncState {
+        incomplete,
+        syncing,
+        complete
+    };
+    
+    MessageFeed(const Element* rosterItem, QObject *parent = nullptr);
+    ~MessageFeed();
+    
+    void addMessage(const Shared::Message& msg);
+    void changeMessage(const QString& id, const QMap<QString, QVariant>& data);
+    void removeMessage(const QString& id);
+    
+    QVariant data(const QModelIndex & index, int role = Qt::DisplayRole) const override;
+    int rowCount(const QModelIndex& parent = QModelIndex()) const override;
+    
+    bool canFetchMore(const QModelIndex & parent) const override;
+    void fetchMore(const QModelIndex & parent) override;
+    QHash<int, QByteArray> roleNames() const override;
+    QModelIndex index(int row, int column, const QModelIndex & parent) const override;
+    
+    void responseArchive(const std::list<Shared::Message> list, bool last);
+    void downloadAttachment(const QString& messageId);
+    bool registerUpload(const QString& messageId);
+    void reportLocalPathInvalid(const QString& messageId);
+    
+    unsigned int unreadMessagesCount() const;
+    void fileProgress(const QString& messageId, qreal value, bool up);
+    void fileError(const QString& messageId, const QString& error, bool up);
+    void fileComplete(const QString& messageId, bool up);
+    
+    void incrementObservers();
+    void decrementObservers();
+    SyncState getSyncState() const;
+    
+signals:
+    void requestArchive(const QString& before);
+    void requestStateChange(bool requesting);
+    void fileDownloadRequest(const QString& url);
+    void unreadMessagesCountChanged();
+    void newMessage(const Shared::Message& msg);
+    void unnoticedMessage(const Shared::Message& msg);
+    void localPathInvalid(const QString& path);
+    void syncStateChange(SyncState state);
+    
+public:
+    enum MessageRoles {
+        Text = Qt::UserRole + 1,
+        Sender,
+        Date,
+        DeliveryState,
+        Correction,
+        SentByMe,
+        Avatar,
+        Attach,
+        Id,
+        Error,
+        Bulk
+    };
+    
+protected:
+    bool sentByMe(const Shared::Message& msg) const;
+    Attachment fillAttach(const Shared::Message& msg) const;
+    QModelIndex modelIndexById(const QString& id) const;
+    QModelIndex modelIndexByTime(const QString& id, const QDateTime& time) const;
+    std::set<MessageRoles> detectChanges(const Shared::Message& msg, const QMap<QString, QVariant>& data) const;
+    
+private:
+    //tags
+    struct id {};
+    struct time {};
+    
+    typedef boost::multi_index_container<
+        Shared::Message*,
+        boost::multi_index::indexed_by<
+            boost::multi_index::ordered_unique<
+                boost::multi_index::tag<id>,
+                boost::multi_index::const_mem_fun<
+                    Shared::Message,
+                    QString,
+                    &Shared::Message::getId
+                >
+            >,
+            boost::multi_index::ranked_non_unique<
+                boost::multi_index::tag<time>,
+                boost::multi_index::const_mem_fun<
+                    Shared::Message,
+                    QDateTime,
+                    &Shared::Message::getTime
+                >,
+                std::greater<QDateTime>
+            >
+        >
+    > Storage; 
+    
+    typedef Storage::index<id>::type StorageById;
+    typedef Storage::index<time>::type StorageByTime;
+    Storage storage;
+    StorageById& indexById;
+    StorageByTime& indexByTime;
+    
+    const Element* rosterItem;
+    SyncState syncState;
+    
+    typedef std::map<QString, qreal> Progress;
+    typedef std::map<QString, QString> Err;
+    Progress uploads;
+    Progress downloads;
+    Err failedDownloads;
+    Err failedUploads;
+    
+    std::set<QString>* unreadMessages;
+    uint16_t observersAmount;
+    
+    
+    static const QHash<int, QByteArray> roles;
+};
+
+enum AttachmentType {
+    none,
+    remote,
+    local,
+    downloading,
+    uploading,
+    errorDownload,
+    errorUpload,
+    ready
+};
+
+struct Attachment {
+    AttachmentType state;
+    qreal progress;
+    QString localPath;
+    QString remotePath;
+    QString error;
+};
+
+struct FeedItem {
+    QString id;
+    QString text;
+    QString sender;
+    QString avatar;
+    QString error;
+    bool sentByMe;
+    bool correction;
+    QDateTime date;
+    Shared::Message::State state;
+    Attachment attach;
+};
+};
+
+Q_DECLARE_METATYPE(Models::Attachment);
+Q_DECLARE_METATYPE(Models::FeedItem);
+
+#endif // MESSAGEFEED_H