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LibrePilot/ground/openpilotgcs/src/plugins/coreplugin/connectionmanager.cpp
2011-08-08 13:50:46 +02:00

382 lines
12 KiB
C++

/**
******************************************************************************
*
* @file connectionmanager.cpp
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
* Parts by Nokia Corporation (qt-info@nokia.com) Copyright (C) 2009.
* @addtogroup GCSPlugins GCS Plugins
* @{
* @addtogroup CorePlugin Core Plugin
* @{
* @brief The Core GCS plugin
*****************************************************************************/
/*
* 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, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "connectionmanager.h"
#include <aggregation/aggregate.h>
#include <coreplugin/iconnection.h>
#include <extensionsystem/pluginmanager.h>
#include "qextserialport/src/qextserialenumerator.h"
#include "qextserialport/src/qextserialport.h"
#include <QDebug>
#include <QLabel>
#include <QHBoxLayout>
#include <QComboBox>
namespace Core {
ConnectionManager::ConnectionManager(Internal::MainWindow *mainWindow, QTabWidget *modeStack) :
QWidget(mainWindow), // Pip
m_availableDevList(0),
m_connectBtn(0),
m_ioDev(NULL),
m_mainWindow(mainWindow)
{
// Q_UNUSED(mainWindow);
/* QVBoxLayout *top = new QVBoxLayout;
top->setSpacing(0);
top->setMargin(0);*/
QHBoxLayout *layout = new QHBoxLayout;
layout->setSpacing(5);
layout->setContentsMargins(5,5,5,5);
layout->addWidget(new QLabel(tr("Connections:")));
m_availableDevList = new QComboBox;
//m_availableDevList->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
m_availableDevList->setMinimumWidth(100);
m_availableDevList->setMaximumWidth(150);
m_availableDevList->setContextMenuPolicy(Qt::CustomContextMenu);
layout->addWidget(m_availableDevList);
m_connectBtn = new QPushButton(tr("Connect"));
m_connectBtn->setEnabled(false);
layout->addWidget(m_connectBtn);
/* Utils::StyledBar *bar = new Utils::StyledBar;
bar->setLayout(layout);
top->addWidget(bar);*/
setLayout(layout);
// modeStack->insertCornerWidget(modeStack->cornerWidgetCount()-1, this);
modeStack->setCornerWidget(this, Qt::TopRightCorner);
QObject::connect(m_connectBtn, SIGNAL(pressed()), this, SLOT(onConnectPressed()));
}
ConnectionManager::~ConnectionManager()
{
disconnectDevice(); // Pip
suspendPolling(); // Pip
}
void ConnectionManager::init()
{
//register to the plugin manager so we can receive
//new connection object from plugins
QObject::connect(ExtensionSystem::PluginManager::instance(), SIGNAL(objectAdded(QObject*)), this, SLOT(objectAdded(QObject*)));
QObject::connect(ExtensionSystem::PluginManager::instance(), SIGNAL(aboutToRemoveObject(QObject*)), this, SLOT(aboutToRemoveObject(QObject*)));
}
/**
* Method called when the user clicks the "Connect" button
*/
bool ConnectionManager::connectDevice()
{
devListItem connection_device = findDevice(m_availableDevList->itemData(m_availableDevList->currentIndex(),Qt::ToolTipRole).toString());
if (!connection_device.connection)
return false;
QIODevice *io_dev = connection_device.connection->openDevice(connection_device.Name);
if (!io_dev)
return false;
io_dev->open(QIODevice::ReadWrite);
// check if opening the device worked
if (!io_dev->isOpen()) {
qDebug() << "Error: io_dev->isOpen() returned FALSE .. could not open connection to " << connection_device.devName
<< ": " << io_dev->errorString();
// close the device
// EDOUARD: why do we close if we could not open ???
try {
connection_device.connection->closeDevice(connection_device.devName);
}
catch (...) { // handle exception
qDebug() << "Exception: connection_device.connection->closeDevice(" << connection_device.devName << ")";
}
return false;
}
// we appear to have connected to the device OK
// remember the connection/device details
m_connectionDevice = connection_device;
m_ioDev = io_dev;
connect(m_connectionDevice.connection, SIGNAL(destroyed(QObject *)), this, SLOT(onConnectionDestroyed(QObject *)), Qt::QueuedConnection);
// signal interested plugins that we connected to the device
emit deviceConnected(m_ioDev);
m_connectBtn->setText("Disconnect");
m_availableDevList->setEnabled(false);
return true;
}
/**
* Method called by plugins who want to force a disconnection.
* Used by Uploader gadget for instance.
*/
bool ConnectionManager::disconnectDevice()
{
if (!m_ioDev) {
// apparently we are already disconnected: this can
// happen if a plugin tries to force a disconnect whereas
// we are not connected. Just return.
return false;
}
// We are connected - disconnect from the device
// signal interested plugins that user is disconnecting his device
emit deviceAboutToDisconnect();
try {
if (m_connectionDevice.connection)
m_connectionDevice.connection->closeDevice(m_connectionDevice.devName);
} catch (...) { // handle exception
qDebug() << "Exception: m_connectionDevice.connection->closeDevice(" << m_connectionDevice.devName << ")";
}
m_connectionDevice.connection = NULL;
m_ioDev = NULL;
m_connectBtn->setText("Connect");
m_availableDevList->setEnabled(true);
return true;
}
/**
* Slot called when a plugin added an object to the core pool
*/
void ConnectionManager::objectAdded(QObject *obj)
{
//Check if a plugin added a connection object to the pool
IConnection *connection = Aggregation::query<IConnection>(obj);
if (!connection) return;
//qDebug() << "Connection object registered:" << connection->connectionName();
//qDebug() << connection->availableDevices();
//register devices and populate CB
devChanged(connection);
// Keep track of the registration to be able to tell plugins
// to do things
m_connectionsList.append(connection);
QObject::connect(connection, SIGNAL(availableDevChanged(IConnection *)), this, SLOT(devChanged(IConnection *)));
}
void ConnectionManager::aboutToRemoveObject(QObject *obj)
{
//Check if a plugin added a connection object to the pool
IConnection *connection = Aggregation::query<IConnection>(obj);
if (!connection) return;
if (m_connectionDevice.connection && m_connectionDevice.connection == connection) // Pip
{ // we are currently using the one that is about to be removed
m_connectionDevice.connection = NULL;
m_ioDev = NULL;
}
if (m_connectionsList.contains(connection))
m_connectionsList.removeAt(m_connectionsList.indexOf(connection));
}
void ConnectionManager::onConnectionDestroyed(QObject *obj) // Pip
{
Q_UNUSED(obj)
//onConnectionClosed(obj);
disconnectDevice();
}
/**
* Slot called when the user pressed the connect/disconnect button
*/
void ConnectionManager::onConnectPressed()
{
// Check if we have a ioDev already created:
if (!m_ioDev)
{ // connecting
connectDevice();
}
else
{ // disconnecting
disconnectDevice();
}
}
/**
* Find a device by its displayed (visible on screen) name
*/
devListItem ConnectionManager::findDevice(const QString &devName)
{
foreach (devListItem d, m_devList)
{
if (d.devName == devName)
return d;
}
qDebug() << "findDevice: cannot find " << devName << " in device list";
devListItem d;
d.connection = NULL;
return d;
}
/**
* Tells every connection plugin to stop polling for devices if they
* are doing that.
*
*/
void ConnectionManager::suspendPolling()
{
foreach (IConnection *cnx, m_connectionsList)
{
cnx->suspendPolling();
}
m_connectBtn->setEnabled(false);
m_availableDevList->setEnabled(false);
}
/**
* Tells every connection plugin to resume polling for devices if they
* are doing that.
*/
void ConnectionManager::resumePolling()
{
foreach (IConnection *cnx, m_connectionsList)
{
cnx->resumePolling();
}
m_connectBtn->setEnabled(true);
m_availableDevList->setEnabled(true);
}
/**
* Unregister all devices from one connection plugin
* \param[in] connection Connection type that you want to forget about :)
*/
void ConnectionManager::unregisterAll(IConnection *connection)
{
for (QLinkedList<devListItem>::iterator iter = m_devList.begin(); iter != m_devList.end(); )
{
if (iter->connection == connection)
{
if (m_connectionDevice.connection && m_connectionDevice.connection == connection)
{ // we are currently using the one we are about to erase
//onConnectionClosed(m_connectionDevice.connection);
disconnectDevice();
}
iter = m_devList.erase(iter);
}
else
++iter;
}
}
/**
* Register a device from a specific connection plugin
* @param devN contains the connection shortname + device name which is diplayed in the tooltip
* @param disp is the name that is displayed in the dropdown menu
* @param name is the actual device name
*/
void ConnectionManager::registerDevice(IConnection *conn, const QString &devN, const QString &name, const QString &disp)
{
devListItem d;
d.connection = conn;
d.devName = devN;
d.Name = name;
d.displayName=disp;
m_devList.append(d);
}
/**
* A device plugin notified us that its device list has changed
* (eg: user plug/unplug a usb device)
* \param[in] connection Connection type which signaled the update
*/
void ConnectionManager::devChanged(IConnection *connection)
{
//clear device list combobox
m_availableDevList->clear();
//remove registered devices of this IConnection from the list
unregisterAll(connection);
//and add them back in the list
QList <IConnection::device> availableDev = connection->availableDevices();
foreach (IConnection::device dev, availableDev)
{
QString cbName = connection->shortName() + ": " + dev.name;
QString disp = connection->shortName() + " : " + dev.displayName;
registerDevice(connection,cbName,dev.name,disp);
}
//add all the list again to the combobox
foreach (devListItem d, m_devList)
{
m_availableDevList->addItem(d.displayName);
m_availableDevList->setItemData(m_availableDevList->count()-1,(const QString)d.devName,Qt::ToolTipRole);
if(!m_ioDev && d.displayName.startsWith("USB"))
{
if(m_mainWindow->generalSettings()->autoConnect() || m_mainWindow->generalSettings()->autoSelect())
m_availableDevList->setCurrentIndex(m_availableDevList->count()-1);
if(m_mainWindow->generalSettings()->autoConnect())
connectDevice();
}
}
if(m_ioDev)//if a device is connected make it the one selected on the dropbox
{
for(int x=0;x<m_availableDevList->count();++x)
{
if(m_connectionDevice.devName==m_availableDevList->itemData(x,Qt::ToolTipRole).toString())
m_availableDevList->setCurrentIndex(x);
}
}
//disable connection button if the liNameif (m_availableDevList->count() > 0)
if (m_availableDevList->count() > 0)
m_connectBtn->setEnabled(true);
else
m_connectBtn->setEnabled(false);
}
} //namespace Core