1 /* Copyright (C) 2006 - 2014 Jan Kundrát <jkt@flaska.net>
2 Copyright (C) 2014 Thomas Lübking <thomas.luebking@gmail.com>
3
4 This file is part of the Trojita Qt IMAP e-mail client,
5 http://trojita.flaska.net/
6
7 This program is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License as
9 published by the Free Software Foundation; either version 2 of
10 the License or (at your option) version 3 or any later version
11 accepted by the membership of KDE e.V. (or its successor approved
12 by the membership of KDE e.V.), which shall act as a proxy
13 defined in Section 14 of version 3 of the license.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 */
23
24 #include "TaskProgressIndicator.h"
25 #include <QApplication>
26 #include <QMouseEvent>
27 #include <QTimer>
28 #include "Gui/Spinner.h"
29 #include "Imap/Model/Model.h"
30 #include "Imap/Model/VisibleTasksModel.h"
31
32 namespace Gui
33 {
34
TaskProgressIndicator(QWidget * parent)35 TaskProgressIndicator::TaskProgressIndicator(QWidget *parent) :
36 Spinner(parent), m_busyCursorTrigger(new QTimer(this)), m_busy(false)
37 {
38 connect(m_busyCursorTrigger, &QTimer::timeout, []() {
39 QApplication::setOverrideCursor(Qt::BusyCursor);
40 });
41 m_busyCursorTrigger->setSingleShot(true);
42 m_busyCursorTrigger->setInterval(666);
43
44 setType(Spinner::Elastic);
45 setContext(Spinner::Throbber);
46 }
47
48 /** @short Connect to the specified IMAP model as the source of the activity information */
setImapModel(Imap::Mailbox::Model * model)49 void TaskProgressIndicator::setImapModel(Imap::Mailbox::Model *model)
50 {
51 if (model) {
52 m_visibleTasksModel = new Imap::Mailbox::VisibleTasksModel(model, model->taskModel());
53 connect(m_visibleTasksModel.data(), &QAbstractItemModel::layoutChanged, this, &TaskProgressIndicator::updateActivityIndication);
54 connect(m_visibleTasksModel.data(), &QAbstractItemModel::modelReset, this, &TaskProgressIndicator::updateActivityIndication);
55 connect(m_visibleTasksModel.data(), &QAbstractItemModel::rowsInserted, this, &TaskProgressIndicator::updateActivityIndication);
56 connect(m_visibleTasksModel.data(), &QAbstractItemModel::rowsRemoved, this, &TaskProgressIndicator::updateActivityIndication);
57 }
58 }
59
60 /** @short Reflect a possible change in the activity in the GUI */
updateActivityIndication()61 void TaskProgressIndicator::updateActivityIndication()
62 {
63 if (!m_visibleTasksModel)
64 return;
65
66 bool busy = m_visibleTasksModel->hasChildren();
67 if (!m_busy && busy) {
68 start();
69 if (!m_busyCursorTrigger->isActive()) {
70 // do NOT restart, we don't want to prolong this delay
71 m_busyCursorTrigger->start();
72 }
73 } else if (m_busy && !busy) {
74 stop();
75 if (!m_busyCursorTrigger->isActive()) {
76 // don't restore unless we've alredy set it
77 QApplication::restoreOverrideCursor();
78 }
79 // don't cause future timeout
80 m_busyCursorTrigger->stop();
81 }
82
83 if (busy) {
84 setToolTip(tr("%n ongoing actions", 0, m_visibleTasksModel->rowCount()));
85 } else {
86 setToolTip(tr("IMAP connection idle"));
87 }
88
89 m_busy = busy;
90 }
91
92 }
93