mainwindow.cpp Example File | Enginio C++ Classes and Examples 1.1

- Enginio Manual
- Enginio C++ Classes and Examples
- Enginio C++ Examples - Cloud Address Book
- mainwindow.cpp Example File
- Enginio 1.1.2 Reference Documentation

# mainwindow.cpp Example File

cloudaddressbook/mainwindow.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
    ** Contact: http://www.qt-project.org/legal
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
    **     of its contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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    #include <QtCore/qbytearray.h>
    #include <QtCore/qpair.h>

    #include <QtCore/qjsondocument.h>
    #include <QtCore/qjsonobject.h>
    #include <QtCore/qsortfilterproxymodel.h>

    #include <Enginio/enginioclient.h>
    #include <Enginio/enginioreply.h>

    #include <QtGui/qicon.h>
    #include <QtWidgets/qpushbutton.h>

    #include "addressbookmodel.h"

    // To get the backend right, we use a helper class in the example.
    // Usually one would just insert the backend information below.
    #include "backendhelper.h"

    #include "mainwindow.h"

    MainWindow::MainWindow(QWidget *parent)
        : QMainWindow(parent)
    {
        setupUi(this);
        QByteArray EnginioBackendId = backendId("cloudaddressbook");

        client = new EnginioClient(this);
        client->setBackendId(EnginioBackendId);

        // this line is a debugging conviniance, passing all errors to qDebug()
        QObject::connect(client, &EnginioClient::error, this, &MainWindow::error);

        model = new AddressBookModel(this);
        model->setClient(client);

        QJsonObject query;
        query["objectType"] = QString::fromUtf8("objects.addressbook");
        model->setQuery(query);

        tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);

        sortFilterProxyModel = new QSortFilterProxyModel(this);
        sortFilterProxyModel->setSourceModel(model);
        tableView->setSortingEnabled(true);
        tableView->setModel(sortFilterProxyModel);

        // create the full text search based on searchEdit text value
        QObject::connect(searchEdit, &QLineEdit::returnPressed, this, &MainWindow::onSearchEdit);

        // clear the status bar when the search is finished
        QObject::connect(model, &AddressBookModel::searchFinished, this, &MainWindow::onSearchFinished);

        // append an empty row
        QObject::connect(add, &QPushButton::clicked, this, &MainWindow::onAddRow);

        // enable remove button when a row is selected
        QObject::connect(tableView->selectionModel(), &QItemSelectionModel::selectionChanged, this, &MainWindow::onSelectionChanged);

        // remove selected rows
        QObject::connect(remove, &QPushButton::clicked, this, &MainWindow::onRemoveRow);
    }

    void MainWindow::onSearchEdit()
    {
        model->newSearch(searchEdit->text());
        statusbar->showMessage(QStringLiteral("Searching for: ") + searchEdit->text());
        searchEdit->clear();
    }

    void MainWindow::onSearchFinished()
    {
        statusbar->showMessage(QStringLiteral("Search finished"), 1500);
    }

    void MainWindow::onAddRow()
    {
        QJsonObject item;
        item.insert("objectType", QString::fromUtf8("objects.addressbook"));
        EnginioReply *reply = model->append(item);
        QObject::connect(reply, &EnginioReply::finished, reply, &EnginioReply::deleteLater);
    }

    void MainWindow::onSelectionChanged()
    {
        remove->setEnabled(tableView->selectionModel()->selectedRows().count());
    }

    void MainWindow::onRemoveRow()
    {
        foreach (const QModelIndex &index, tableView->selectionModel()->selectedRows()) {
            QModelIndex sourceIndex = sortFilterProxyModel->mapToSource(index);
            EnginioReply *reply = model->remove(sourceIndex.row());
            QObject::connect(reply, &EnginioReply::finished, reply, &EnginioReply::deleteLater);
        }
    }

    void MainWindow::error(EnginioReply *error)
    {
        qWarning() << Q_FUNC_INFO << error;
    }