139 lines
4.1 KiB
C++
139 lines
4.1 KiB
C++
/*
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* nheko Copyright (C) 2017 Konstantinos Sideris <siderisk@auth.gr>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <QHBoxLayout>
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#include <QList>
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#include <QScrollArea>
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#include <QVBoxLayout>
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#include <QWidget>
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#include "ScrollBar.h"
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#include "Sync.h"
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#include "TimelineItem.h"
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#include "Image.h"
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#include "Notice.h"
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#include "Text.h"
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namespace msgs = matrix::events::messages;
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namespace events = matrix::events;
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// Contains info about a message shown in the history view
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// but not yet confirmed by the homeserver through sync.
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struct PendingMessage {
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int txn_id;
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QString body;
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QString event_id;
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TimelineItem *widget;
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PendingMessage(int txn_id, QString body, QString event_id, TimelineItem *widget)
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: txn_id(txn_id)
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, body(body)
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, event_id(event_id)
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, widget(widget)
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{
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}
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};
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// In which place new TimelineItems should be inserted.
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enum class TimelineDirection {
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Top,
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Bottom,
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};
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class TimelineView : public QWidget
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{
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Q_OBJECT
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public:
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TimelineView(const Timeline &timeline, QSharedPointer<MatrixClient> client, const QString &room_id, QWidget *parent = 0);
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TimelineView(QSharedPointer<MatrixClient> client, const QString &room_id, QWidget *parent = 0);
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TimelineItem *createTimelineItem(const events::MessageEvent<msgs::Image> &e, const QString &color, bool with_sender);
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TimelineItem *createTimelineItem(const events::MessageEvent<msgs::Notice> &e, const QString &color, bool with_sender);
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TimelineItem *createTimelineItem(const events::MessageEvent<msgs::Text> &e, const QString &color, bool with_sender);
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// Add new events at the end of the timeline.
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int addEvents(const Timeline &timeline);
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void addUserTextMessage(const QString &msg, int txn_id);
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void updatePendingMessage(int txn_id, QString event_id);
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void scrollDown();
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public slots:
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void sliderRangeChanged(int min, int max);
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void sliderMoved(int position);
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void fetchHistory();
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// Add old events at the top of the timeline.
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void addBackwardsEvents(const QString &room_id, const RoomMessages &msgs);
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private:
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void init();
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void removePendingMessage(const events::MessageEvent<msgs::Text> &e);
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void addTimelineItem(TimelineItem *item, TimelineDirection direction);
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void updateLastSender(const QString &user_id, TimelineDirection direction);
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// Used to determine whether or not we should prefix a message with the sender's name.
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bool isSenderRendered(const QString &user_id, TimelineDirection direction);
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bool isPendingMessage(const events::MessageEvent<msgs::Text> &e, const QString &userid);
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inline bool isDuplicate(const QString &event_id);
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// Return nullptr if the event couldn't be parsed.
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TimelineItem *parseMessageEvent(const QJsonObject &event, TimelineDirection direction);
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QVBoxLayout *top_layout_;
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QVBoxLayout *scroll_layout_;
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QScrollArea *scroll_area_;
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ScrollBar *scrollbar_;
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QWidget *scroll_widget_;
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QString last_sender_;
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QString last_sender_backwards_;
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QString room_id_;
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QString prev_batch_token_;
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QString local_user_;
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bool isPaginationInProgress_ = false;
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bool isInitialized = false;
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bool isTimelineFinished = false;
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bool isInitialSync = true;
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bool isPaginationScrollPending_ = false;
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const int SCROLL_BAR_GAP = 400;
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QTimer *paginationTimer_;
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int scroll_height_ = 0;
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int previous_max_height_ = 0;
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int oldPosition_;
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int oldHeight_;
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// The events currently rendered. Used for duplicate detection.
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QMap<QString, bool> eventIds_;
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QList<PendingMessage> pending_msgs_;
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QSharedPointer<MatrixClient> client_;
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};
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inline bool TimelineView::isDuplicate(const QString &event_id)
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{
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return eventIds_.contains(event_id);
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}
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