Qt Mobility Reference Documentation

servicestab.cpp Example File

geoservicedemo/servicestab.cpp
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 ** This file is part of the examples of the Qt Mobility Components.
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 #include "servicestab.h"
 #include "placepresenter.h"

 #include <QTreeWidget>
 #include <QLineEdit>
 #include <QString>
 #include <QLabel>
 #include <QVBoxLayout>
 #include <QHBoxLayout>
 #include <QPushButton>
 #include <QMessageBox>
 #include <QTimer>
 #include <qgeoserviceprovider.h>

 ServicesTab::ServicesTab(QWidget *parent) :
         QWidget(parent)
 {
     m_requestBtn = new QPushButton(tr("Set Service Provider"));
     m_requestBtn->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
     QObject::connect(m_requestBtn, SIGNAL(clicked(bool)), this, SLOT(on_btnRequest_clicked()));

     m_resultTree = new QTreeWidget();
     QStringList labels;
     labels << tr("Services") << tr("Available");
     m_resultTree->setHeaderLabels(labels);
     m_resultTree->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
     m_resultTree->setColumnWidth(0, 275);

     QHBoxLayout *firstrow = new QHBoxLayout;
     firstrow->setSpacing(2);
     firstrow->setContentsMargins(2, 1, 2, 1);
     firstrow->addWidget(m_requestBtn);

     QVBoxLayout *mainLayout = new QVBoxLayout;
     mainLayout->setSpacing(2);
     mainLayout->setContentsMargins(2, 1, 2, 1);
     mainLayout->addLayout(firstrow);
     mainLayout->addWidget(m_resultTree);
     setLayout(mainLayout);

     m_requestBtn->setDisabled(true);
 }

 void ServicesTab::initialize()
 {
     QTreeWidgetItem* top = new QTreeWidgetItem(m_resultTree);
     top->setText(0, tr("Loading Service Providers..."));

     listServiceProviders();

     if (m_resultTree->topLevelItemCount() == 0) {
         m_requestBtn->setDisabled(true);
         QTreeWidgetItem* top = new QTreeWidgetItem(m_resultTree);
         top->setText(0, tr("No providers available"));
     } else {
         m_requestBtn->setDisabled(false);
         on_btnRequest_clicked();
     }
 }

 ServicesTab::~ServicesTab()
 {
 }

 void ServicesTab::on_btnRequest_clicked()
 {
     if (m_resultTree->currentItem() == NULL) {
         if (m_resultTree->topLevelItemCount() > 0)
             m_resultTree->setCurrentItem(m_resultTree->topLevelItem(0));
         else
             return;
     }

     QTreeWidgetItem *serviceItem = m_resultTree->currentItem();
     while (serviceItem->parent() != NULL)
         serviceItem = m_resultTree->currentItem()->parent();

     QString serviceId = serviceItem->text(0);
     emit serviceProviderChanged(serviceId);

     for (int i = 0; i < m_resultTree->topLevelItemCount(); ++i) {
         QTreeWidgetItem* top = m_resultTree->topLevelItem(i);
         if (top->text(0) == serviceId)
             top->setText(1, tr("CurrentProvider"));
         else
             top->setText(1, tr(""));
     }
 }

 void ServicesTab::listServiceProviders()
 {
     m_resultTree->clear();
     QList<QString> providers = QGeoServiceProvider::availableServiceProviders();

     QString providerId;
     foreach(providerId, providers) {
         QTreeWidgetItem* top = new QTreeWidgetItem(m_resultTree);
         top->setText(0, providerId);
         QGeoServiceProvider* serviceProvider = new QGeoServiceProvider(providerId);

         QTreeWidgetItem* searchItem = new QTreeWidgetItem(top);
         searchItem->setText(0, "Search");
         QGeoSearchManager* searchManager = serviceProvider->searchManager();
         if (searchManager)
             searchItem->setText(1, tr("true"));
         else
             searchItem->setText(1, tr("false"));

         QTreeWidgetItem* mappingItem = new QTreeWidgetItem(top);
         mappingItem->setText(0, "Mapping");
         QGeoMappingManager* mappingManager = serviceProvider->mappingManager();
         if (mappingManager)
             mappingItem->setText(1, tr("true"));
         else
             mappingItem->setText(1, tr("false"));

         QTreeWidgetItem* routingItem = new QTreeWidgetItem(top);
         routingItem->setText(0, "Routing");
         QGeoRoutingManager* routingManager = serviceProvider->routingManager();
         if (routingManager)
             routingItem->setText(1, tr("true"));
         else
             routingItem->setText(1, tr("false"));

         delete serviceProvider;
     }
 }
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