1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/*
* nheko Copyright (C) 2017 Konstantinos Sideris <siderisk@auth.gr>
*
* 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/>.
*/
#pragma once
#include <QHBoxLayout>
#include <QList>
#include <QScrollArea>
#include <QVBoxLayout>
#include <QWidget>
#include "ScrollBar.h"
#include "Sync.h"
#include "TimelineItem.h"
#include "Image.h"
#include "Notice.h"
#include "RoomInfoListItem.h"
#include "Text.h"
namespace msgs = matrix::events::messages;
namespace events = matrix::events;
// Contains info about a message shown in the history view
// but not yet confirmed by the homeserver through sync.
struct PendingMessage {
int txn_id;
QString body;
QString event_id;
TimelineItem *widget;
PendingMessage(int txn_id, QString body, QString event_id, TimelineItem *widget)
: txn_id(txn_id)
, body(body)
, event_id(event_id)
, widget(widget)
{
}
};
// In which place new TimelineItems should be inserted.
enum class TimelineDirection {
Top,
Bottom,
};
class TimelineView : public QWidget
{
Q_OBJECT
public:
TimelineView(const Timeline &timeline,
QSharedPointer<MatrixClient> client,
const QString &room_id,
QWidget *parent = 0);
TimelineView(QSharedPointer<MatrixClient> client, const QString &room_id, QWidget *parent = 0);
TimelineItem *createTimelineItem(const events::MessageEvent<msgs::Image> &e,
const QString &color,
bool with_sender);
TimelineItem *createTimelineItem(const events::MessageEvent<msgs::Notice> &e,
const QString &color,
bool with_sender);
TimelineItem *createTimelineItem(const events::MessageEvent<msgs::Text> &e,
const QString &color,
bool with_sender);
// Add new events at the end of the timeline.
int addEvents(const Timeline &timeline);
void addUserTextMessage(const QString &msg, int txn_id);
void updatePendingMessage(int txn_id, QString event_id);
void scrollDown();
public slots:
void sliderRangeChanged(int min, int max);
void sliderMoved(int position);
void fetchHistory();
// Add old events at the top of the timeline.
void addBackwardsEvents(const QString &room_id, const RoomMessages &msgs);
signals:
void updateLastTimelineMessage(const QString &user, const DescInfo &info);
private:
void init();
void removePendingMessage(const events::MessageEvent<msgs::Text> &e);
void addTimelineItem(TimelineItem *item, TimelineDirection direction);
void updateLastSender(const QString &user_id, TimelineDirection direction);
void notifyForLastEvent();
// Used to determine whether or not we should prefix a message with the sender's name.
bool isSenderRendered(const QString &user_id, TimelineDirection direction);
bool isPendingMessage(const events::MessageEvent<msgs::Text> &e, const QString &userid);
inline bool isDuplicate(const QString &event_id);
// Return nullptr if the event couldn't be parsed.
TimelineItem *parseMessageEvent(const QJsonObject &event, TimelineDirection direction);
QVBoxLayout *top_layout_;
QVBoxLayout *scroll_layout_;
QScrollArea *scroll_area_;
ScrollBar *scrollbar_;
QWidget *scroll_widget_;
QString lastSender_;
QString firstSender_;
QString room_id_;
QString prev_batch_token_;
QString local_user_;
bool isPaginationInProgress_ = false;
bool isInitialized = false;
bool isTimelineFinished = false;
bool isInitialSync = true;
bool isPaginationScrollPending_ = false;
const int SCROLL_BAR_GAP = 400;
QTimer *paginationTimer_;
int scroll_height_ = 0;
int previous_max_height_ = 0;
int oldPosition_;
int oldHeight_;
// The events currently rendered. Used for duplicate detection.
QMap<QString, bool> eventIds_;
QList<PendingMessage> pending_msgs_;
QSharedPointer<MatrixClient> client_;
};
inline bool
TimelineView::isDuplicate(const QString &event_id)
{
return eventIds_.contains(event_id);
}
|
