kaddressbook/contactswitcher.cpp

   1 /*
   2   Copyright (c) 2009 Tobias Koenig <tokoe@kde.org>
   3
   4   This library is free software; you can redistribute it and/or modify it
   5   under the terms of the GNU Library General Public License as published by
   6   the Free Software Foundation; either version 2 of the License, or (at your
   7   option) any later version.
   8
   9   This library is distributed in the hope that it will be useful, but WITHOUT
  10   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
  12   License for more details.
  13
  14   You should have received a copy of the GNU Library General Public License
  15   along with this library; see the file COPYING.LIB.  If not, write to the
  16   Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17   02110-1301, USA.
  18 */
  19
  20 #include "contactswitcher.h"
  21
  22 #include <KLocalizedString>
  23
  24 #include <QAbstractItemView>
  25 #include <QHBoxLayout>
  26 #include <QLabel>
  27 #include <QPushButton>
  28
  29 ContactSwitcher::ContactSwitcher(QWidget *parent)
  30     : QWidget(parent), mView(Q_NULLPTR)
  31 {
  32     QHBoxLayout *layout = new QHBoxLayout(this);
  33
  34     mPreviousButton = new QPushButton(i18nc("@action:button Previous contact", "Previous"));
  35     mPreviousButton->setToolTip(
  36         i18nc("@info:tooltip", "Move to the previous contact in the list"));
  37     mPreviousButton->setWhatsThis(
  38         i18nc("@info:whatsthis",
  39               "Press this button to move to the previous contact in the list."));
  40
  41     mNextButton = new QPushButton(i18nc("@action:button Next contact", "Next"));
  42     mNextButton->setToolTip(
  43         i18nc("@info:tooltip", "Move to the next contact in the list"));
  44     mNextButton->setWhatsThis(
  45         i18nc("@info:whatsthis",
  46               "Press this button to move to the next contact in the list."));
  47
  48     mStatusLabel = new QLabel();
  49
  50     layout->addWidget(mPreviousButton);
  51     layout->addWidget(mNextButton);
  52     layout->addStretch(1);
  53     layout->addWidget(mStatusLabel);
  54
  55     connect(mPreviousButton, &QPushButton::clicked, this, &ContactSwitcher::previousClicked);
  56     connect(mNextButton, &QPushButton::clicked, this, &ContactSwitcher::nextClicked);
  57 }
  58
  59 void ContactSwitcher::setView(QAbstractItemView *view)
  60 {
  61     mView = view;
  62
  63     Q_ASSERT_X(mView->model(), "ContactSwitcher::setView", "The view has no model set!");
  64
  65     connect(mView->model(), &QAbstractItemModel::layoutChanged, this, &ContactSwitcher::updateStatus);
  66     connect(mView->model(), &QAbstractItemModel::rowsInserted, this, &ContactSwitcher::updateStatus);
  67     connect(mView->model(), &QAbstractItemModel::rowsRemoved, this, &ContactSwitcher::updateStatus);
  68     connect(mView->selectionModel(), &QItemSelectionModel::selectionChanged, this, &ContactSwitcher::updateStatus);
  69
  70     updateStatus();
  71 }
  72
  73 void ContactSwitcher::nextClicked()
  74 {
  75     if (!mView || !mView->model()) {
  76         return;
  77     }
  78
  79     const QModelIndex index = mView->selectionModel()->currentIndex();
  80
  81     int row = 0;
  82     if (index.isValid()) {
  83         row = index.row() + 1;
  84     }
  85
  86     mView->selectionModel()->setCurrentIndex(mView->model()->index(row, 0),
  87             QItemSelectionModel::Rows |
  88             QItemSelectionModel::ClearAndSelect);
  89
  90     updateStatus();
  91 }
  92
  93 void ContactSwitcher::previousClicked()
  94 {
  95     if (!mView || !mView->model()) {
  96         return;
  97     }
  98
  99     const QModelIndex index = mView->selectionModel()->currentIndex();
 100
 101     int row = 0;
 102     if (index.isValid()) {
 103         row = index.row() - 1;
 104     }
 105
 106     mView->selectionModel()->setCurrentIndex(mView->model()->index(row, 0),
 107             QItemSelectionModel::Rows |
 108             QItemSelectionModel::ClearAndSelect);
 109
 110     updateStatus();
 111 }
 112
 113 void ContactSwitcher::updateStatus()
 114 {
 115     if (!mView || !mView->model()) {
 116         return;
 117     }
 118
 119     const QModelIndex index = mView->selectionModel()->currentIndex();
 120
 121     int row = 0;
 122     if (index.isValid()) {
 123         row = index.row();
 124     }
 125
 126     mPreviousButton->setEnabled(row != 0);
 127     mNextButton->setEnabled((mView->model()->rowCount() != 0) && (row != (mView->model()->rowCount() - 1)));
 128
 129     if (mView->model()->rowCount() > 0) {
 130         mStatusLabel->setText(i18nc("@info:status",
 131                                     "%1 out of %2", row + 1, mView->model()->rowCount()));
 132     } else {
 133         mStatusLabel->clear();
 134     }
 135 }
 136