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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
/*
* 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 <QLayout>
#include <QList>
#include <QQueue>
#include <QScrollArea>
#include "Emote.h"
#include "Image.h"
#include "MessageEvent.h"
#include "Notice.h"
#include "Text.h"
class FloatingButton;
class MatrixClient;
class RoomMessages;
class ScrollBar;
class Timeline;
class TimelineItem;
struct DescInfo;
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
{
matrix::events::MessageEventType ty;
int txn_id;
QString body;
QString filename;
QString event_id;
TimelineItem *widget;
PendingMessage(matrix::events::MessageEventType ty, int txn_id, QString body, QString filename, QString event_id, TimelineItem *widget)
: ty(ty)
, txn_id(txn_id)
, body(body)
, filename(filename)
, 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,
bool with_sender);
TimelineItem *createTimelineItem(const events::MessageEvent<msgs::Notice> &e,
bool with_sender);
TimelineItem *createTimelineItem(const events::MessageEvent<msgs::Text> &e,
bool with_sender);
TimelineItem *createTimelineItem(const events::MessageEvent<msgs::Emote> &e,
bool with_sender);
// Add new events at the end of the timeline.
int addEvents(const Timeline &timeline);
void addUserMessage(matrix::events::MessageEventType ty, const QString &msg);
void addUserMessage(const QString &url, const QString &filename);
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);
// Whether or not the initial batch has been loaded.
bool hasLoaded() { return scroll_layout_->count() > 1 || isTimelineFinished; };
void handleFailedMessage(int txnid);
private slots:
void sendNextPendingMessage();
signals:
void updateLastTimelineMessage(const QString &user, const DescInfo &info);
private:
void init();
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 QString &txnid,
const QString &sender,
const QString &userid);
void removePendingMessage(const QString &txnid);
bool isDuplicate(const QString &event_id) { return eventIds_.contains(event_id); };
void handleNewUserMessage(PendingMessage msg);
// 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;
// Keeps track whether or not the user has visited the view.
bool isInitialized = false;
bool isTimelineFinished = false;
bool isInitialSync = true;
const int SCROLL_BAR_GAP = 200;
QTimer *paginationTimer_;
int scroll_height_ = 0;
int previous_max_height_ = 0;
int oldPosition_;
int oldHeight_;
FloatingButton *scrollDownBtn_;
TimelineDirection lastMessageDirection_;
// The events currently rendered. Used for duplicate detection.
QMap<QString, bool> eventIds_;
QQueue<PendingMessage> pending_msgs_;
QList<PendingMessage> pending_sent_msgs_;
QSharedPointer<MatrixClient> client_;
};
|
