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jamulus/src/connectdlg.cpp
ignotus bc113d6d6c
Update connectdlg.cpp
2020-05-12 10:16:19 +02:00

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/******************************************************************************\
* Copyright (c) 2004-2020
*
* Author(s):
* Volker Fischer
*
******************************************************************************
*
* 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 2 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 "connectdlg.h"
/* Implementation *************************************************************/
CConnectDlg::CConnectDlg ( const bool bNewShowCompleteRegList,
QWidget* parent,
Qt::WindowFlags f )
: QDialog ( parent, f ),
strCentralServerAddress ( "" ),
strSelectedAddress ( "" ),
strSelectedServerName ( "" ),
bShowCompleteRegList ( bNewShowCompleteRegList ),
bServerListReceived ( false ),
bServerListItemWasChosen ( false ),
bListFilterWasActive ( false ),
bShowAllMusicians ( true )
{
setupUi ( this );
// Add help text to controls -----------------------------------------------
// server list
lvwServers->setWhatsThis ( "<b>" + tr ( "Server List" ) + ":</b> " + tr (
"The server list shows a list of available servers which are registered at the "
"central server. Select a server from the list and press the connect button to "
"connect to this server. Alternatively, double click a server from "
"the list to connect to it. If a server is occupied, a list of the "
"connected musicians is available by expanding the list item. "
"Permanent servers are shown in bold font." ) + "<br>" + tr (
"Note that it may take some time to retrieve the server list from the "
"central server. If no valid central server address is specified in "
"the settings, no server list will be available." ) );
lvwServers->setAccessibleName ( tr ( "Server list view" ) );
// server address
QString strServAddrH = "<b>" + tr ( "Server Address" ) + ":</b> " + tr (
"The IP address or URL of the server running the " ) + APP_NAME + tr (
" server software must be set here. An optional port number can be added after the IP "
"address or URL using a colon as a separator, e.g, "
"example.org:" ) +
QString().setNum ( LLCON_DEFAULT_PORT_NUMBER ) + tr ( ". A list of "
"the most recent used server IP addresses or URLs is available for "
"selection." );
lblServerAddr->setWhatsThis ( strServAddrH );
cbxServerAddr->setWhatsThis ( strServAddrH );
cbxServerAddr->setAccessibleName ( tr ( "Server address edit box" ) );
cbxServerAddr->setAccessibleDescription ( tr ( "Holds the current server "
"IP address or URL. It also stores old URLs in the combo box list." ) );
// filter
edtFilter->setWhatsThis ( "<b>" + tr ( "Filter" ) + ":</b> " + tr ( "The server "
"list is filered by the given text. Note that the filter is case insensitive." ) );
edtFilter->setAccessibleName ( tr ( "Filter edit box" ) );
// show all mucisians
chbExpandAll->setWhatsThis ( "<b>" + tr ( "Show All Musicians" ) + ":</b> " + tr (
"If you check this check box, the musicians of all servers are shown. If you "
"uncheck the check box, all list view items are collapsed.") );
chbExpandAll->setAccessibleName ( tr ( "Show all musicians check box" ) );
// init server address combo box (max MAX_NUM_SERVER_ADDR_ITEMS entries)
cbxServerAddr->setMaxCount ( MAX_NUM_SERVER_ADDR_ITEMS );
cbxServerAddr->setInsertPolicy ( QComboBox::NoInsert );
// set up list view for connected clients (note that the last column size
// must not be specified since this column takes all the remaining space)
#ifdef ANDROID
// for Android we need larger numbers because of the default font size
lvwServers->setColumnWidth ( 0, 200 );
lvwServers->setColumnWidth ( 1, 130 );
lvwServers->setColumnWidth ( 2, 100 );
#else
lvwServers->setColumnWidth ( 0, 180 );
lvwServers->setColumnWidth ( 1, 75 );
lvwServers->setColumnWidth ( 2, 70 );
lvwServers->setColumnWidth ( 3, 220 );
#endif
lvwServers->clear();
// make sure we do not get a too long horizontal scroll bar
lvwServers->header()->setStretchLastSection ( false );
// add invisible columns which are used for sorting the list and storing
// the current/maximum number of clients
// 0: server name
// 1: ping time
// 2: number of musicians (including additional strings like " (full)")
// 3: location
// 4: minimum ping time (invisible)
// 5: maximum number of clients (invisible)
// 6: number of musicians (just the number, invisible)
lvwServers->setColumnCount ( 7 );
lvwServers->hideColumn ( 4 );
lvwServers->hideColumn ( 5 );
lvwServers->hideColumn ( 6 );
// per default the root shall not be decorated (to save space)
lvwServers->setRootIsDecorated ( false );
// make sure the connect button has the focus
butConnect->setFocus();
// for "show all servers" mode make sort by click on header possible
if ( bShowCompleteRegList )
{
lvwServers->setSortingEnabled ( true );
lvwServers->sortItems ( 0, Qt::AscendingOrder );
}
#ifdef ANDROID
// for the android version maximize the window
setWindowState ( Qt::WindowMaximized );
#endif
// Connections -------------------------------------------------------------
// list view
QObject::connect ( lvwServers,
SIGNAL ( itemSelectionChanged() ),
this, SLOT ( OnServerListItemSelectionChanged() ) );
QObject::connect ( lvwServers,
SIGNAL ( itemDoubleClicked ( QTreeWidgetItem*, int ) ),
this, SLOT ( OnServerListItemDoubleClicked ( QTreeWidgetItem*, int ) ) );
QObject::connect ( lvwServers, // to get default return key behaviour working
SIGNAL ( activated ( QModelIndex ) ),
this, SLOT ( OnConnectClicked() ) );
// line edit
QObject::connect ( edtFilter, SIGNAL ( textEdited ( const QString& ) ),
this, SLOT ( OnFilterTextEdited ( const QString& ) ) );
// combo boxes
QObject::connect ( cbxServerAddr, SIGNAL ( editTextChanged ( const QString& ) ),
this, SLOT ( OnServerAddrEditTextChanged ( const QString& ) ) );
// check boxes
QObject::connect ( chbExpandAll, SIGNAL ( stateChanged ( int ) ),
this, SLOT ( OnExpandAllStateChanged ( int ) ) );
// buttons
QObject::connect ( butCancel, SIGNAL ( clicked() ),
this, SLOT ( close() ) );
QObject::connect ( butConnect, SIGNAL ( clicked() ),
this, SLOT ( OnConnectClicked() ) );
// timers
QObject::connect ( &TimerPing, SIGNAL ( timeout() ),
this, SLOT ( OnTimerPing() ) );
QObject::connect ( &TimerReRequestServList, SIGNAL ( timeout() ),
this, SLOT ( OnTimerReRequestServList() ) );
}
void CConnectDlg::Init ( const CVector<QString>& vstrIPAddresses )
{
// load stored IP addresses in combo box
cbxServerAddr->clear();
cbxServerAddr->clearEditText();
for ( int iLEIdx = 0; iLEIdx < MAX_NUM_SERVER_ADDR_ITEMS; iLEIdx++ )
{
if ( !vstrIPAddresses[iLEIdx].isEmpty() )
{
cbxServerAddr->addItem ( vstrIPAddresses[iLEIdx] );
}
}
}
void CConnectDlg::showEvent ( QShowEvent* )
{
// on opening the connect dialg, we always want to request a
// new updated server list per definition
RequestServerList();
}
void CConnectDlg::RequestServerList()
{
// reset flags
bServerListReceived = false;
bServerListItemWasChosen = false;
bListFilterWasActive = false;
// clear current address and name
strSelectedAddress = "";
strSelectedServerName = "";
// clear server list view
lvwServers->clear();
// clear filter edit box
edtFilter->setText ( "" );
// get the IP address of the central server (using the ParseNetworAddress
// function) when the connect dialog is opened, this seems to be the correct
// time to do it
if ( NetworkUtil().ParseNetworkAddress ( strCentralServerAddress,
CentralServerAddress ) )
{
// send the request for the server list
emit ReqServerListQuery ( CentralServerAddress );
// start timer, if this message did not get any respond to retransmit
// the server list request message
TimerReRequestServList.start ( SERV_LIST_REQ_UPDATE_TIME_MS );
}
}
void CConnectDlg::hideEvent ( QHideEvent* )
{
// if window is closed, stop timers
TimerPing.stop();
TimerReRequestServList.stop();
}
void CConnectDlg::OnTimerReRequestServList()
{
// if the server list is not yet received, retransmit the request for the
// server list
if ( !bServerListReceived )
{
// note that this is a connection less message which may get lost
// and therefore it makes sense to re-transmit it
emit ReqServerListQuery ( CentralServerAddress );
}
}
void CConnectDlg::SetServerList ( const CHostAddress& InetAddr,
const CVector<CServerInfo>& vecServerInfo )
{
// set flag and disable timer for resend server list request
bServerListReceived = true;
TimerReRequestServList.stop();
// first clear list
lvwServers->clear();
// add list item for each server in the server list
const int iServerInfoLen = vecServerInfo.Size();
for ( int iIdx = 0; iIdx < iServerInfoLen; iIdx++ )
{
// get the host address, note that for the very first entry which is
// the central server, we have to use the receive host address
// instead
CHostAddress CurHostAddress;
if ( iIdx > 0 )
{
CurHostAddress = vecServerInfo[iIdx].HostAddr;
}
else
{
// substitude the receive host address for central server
CurHostAddress = InetAddr;
}
// create new list view item
QTreeWidgetItem* pNewListViewItem = new QTreeWidgetItem ( lvwServers );
// make the entry invisible (will be set to visible on successful ping
// result) if the complete list of registered servers shall not be shown
if ( !bShowCompleteRegList )
{
pNewListViewItem->setHidden ( true );
}
// server name (if empty, show host address instead)
if ( !vecServerInfo[iIdx].strName.isEmpty() )
{
pNewListViewItem->setText ( 0, vecServerInfo[iIdx].strName );
}
else
{
// IP address and port (use IP number without last byte)
// Definition: If the port number is the default port number, we do
// not show it.
if ( vecServerInfo[iIdx].HostAddr.iPort == LLCON_DEFAULT_PORT_NUMBER )
{
// only show IP number, no port number
pNewListViewItem->setText ( 0, CurHostAddress.toString ( CHostAddress::SM_IP_NO_LAST_BYTE ) );
}
else
{
// show IP number and port
pNewListViewItem->setText ( 0, CurHostAddress.toString ( CHostAddress::SM_IP_NO_LAST_BYTE_PORT ) );
}
}
// in case of all servers shown, add the registration number at the beginning
if ( bShowCompleteRegList )
{
pNewListViewItem->setText ( 0, QString ( "%1: " ).arg ( 1 + iIdx, 3 ) + pNewListViewItem->text ( 0 ) );
}
// show server name in bold font if it is a permanent server
QFont CurServerNameFont = pNewListViewItem->font ( 0 );
CurServerNameFont.setBold ( vecServerInfo[iIdx].bPermanentOnline );
pNewListViewItem->setFont ( 0, CurServerNameFont );
// the ping time shall be shown in bold font
QFont CurPingTimeFont = pNewListViewItem->font ( 1 );
CurPingTimeFont.setBold ( true );
pNewListViewItem->setFont ( 1, CurPingTimeFont );
// server location (city and country)
QString strLocation = vecServerInfo[iIdx].strCity;
if ( ( !strLocation.isEmpty() ) &&
( vecServerInfo[iIdx].eCountry != QLocale::AnyCountry ) )
{
strLocation += ", ";
}
if ( vecServerInfo[iIdx].eCountry != QLocale::AnyCountry )
{
QString strCountryToString = QLocale::countryToString ( vecServerInfo[iIdx].eCountry );
// Qt countryToString does not use spaces in between country name
// parts but they use upper case letters which we can detect and
// insert spaces as a post processing
#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
if ( !strCountryToString.contains ( " " ) )
{
QRegularExpressionMatchIterator reMatchIt = QRegularExpression ( "[A-Z][^A-Z]*" ).globalMatch ( strCountryToString );
QStringList slNames;
while ( reMatchIt.hasNext() )
{
slNames << reMatchIt.next().capturedTexts();
}
strCountryToString = slNames.join ( " " );
}
#endif
strLocation += strCountryToString;
}
pNewListViewItem->setText ( 3, strLocation );
// init the minimum ping time with a large number (note that this number
// must fit in an integer type)
pNewListViewItem->setText ( 4, "99999999" );
// store the maximum number of clients
pNewListViewItem->setText ( 5, QString().setNum ( vecServerInfo[iIdx].iMaxNumClients ) );
// initialize the current number of connected clients
pNewListViewItem->setText ( 6, QString().setNum ( 0 ) );
// store host address
pNewListViewItem->setData ( 0, Qt::UserRole, CurHostAddress.toString() );
// per default expand the list item (if not "show all servers")
if ( bShowAllMusicians )
{
lvwServers->expandItem ( pNewListViewItem );
}
}
// immediately issue the ping measurements and start the ping timer since
// the server list is filled now
OnTimerPing();
TimerPing.start ( PING_UPDATE_TIME_SERVER_LIST_MS );
}
void CConnectDlg::SetConnClientsList ( const CHostAddress& InetAddr,
const CVector<CChannelInfo>& vecChanInfo )
{
// find the server with the correct address
QTreeWidgetItem* pCurListViewItem = FindListViewItem ( InetAddr );
if ( pCurListViewItem )
{
// first remove any existing childs
DeleteAllListViewItemChilds ( pCurListViewItem );
// get number of connected clients
const int iNumConnectedClients = vecChanInfo.Size();
for ( int i = 0; i < iNumConnectedClients; i++ )
{
// create new list view item
QTreeWidgetItem* pNewChildListViewItem =
new QTreeWidgetItem ( pCurListViewItem );
// child items shall use only one column
pNewChildListViewItem->setFirstColumnSpanned ( true );
// set the clients name
QString sClientText = vecChanInfo[i].GenNameForDisplay();
// set the icon: country flag has priority over instrument
bool bCountryFlagIsUsed = false;
if ( vecChanInfo[i].eCountry != QLocale::AnyCountry )
{
// try to load the country flag icon
QPixmap CountryFlagPixmap (
CLocale::GetCountryFlagIconsResourceReference ( vecChanInfo[i].eCountry ) );
// first check if resource reference was valid
if ( !CountryFlagPixmap.isNull() )
{
// set correct picture
pNewChildListViewItem->setIcon ( 0, QIcon ( CountryFlagPixmap ) );
// add the instrument information as text
if ( !CInstPictures::IsNotUsedInstrument ( vecChanInfo[i].iInstrument ) )
{
sClientText.append ( " (" +
CInstPictures::GetName ( vecChanInfo[i].iInstrument ) + ")" );
}
bCountryFlagIsUsed = true;
}
}
if ( !bCountryFlagIsUsed )
{
// get the resource reference string for this instrument
const QString strCurResourceRef =
CInstPictures::GetResourceReference ( vecChanInfo[i].iInstrument );
// first check if instrument picture is used or not and if it is valid
if ( !( CInstPictures::IsNotUsedInstrument ( vecChanInfo[i].iInstrument ) ||
strCurResourceRef.isEmpty() ) )
{
// set correct picture
pNewChildListViewItem->setIcon ( 0, QIcon ( QPixmap ( strCurResourceRef ) ) );
}
}
// apply the client text to the list view item
pNewChildListViewItem->setText ( 0, sClientText );
// add the new child to the corresponding server item
pCurListViewItem->addChild ( pNewChildListViewItem );
// at least one server has childs now, show decoration to be able
// to show the childs
lvwServers->setRootIsDecorated ( true );
}
}
}
void CConnectDlg::OnServerListItemSelectionChanged()
{
// get current selected item (we are only interested in the first selcted
// item)
QList<QTreeWidgetItem*> CurSelListItemList = lvwServers->selectedItems();
// if an item is clicked/selected, copy the server name to the combo box
if ( CurSelListItemList.count() > 0 )
{
// make sure no signals are send when we change the text
cbxServerAddr->blockSignals ( true );
{
cbxServerAddr->setEditText (
GetParentListViewItem ( CurSelListItemList[0] )->text ( 0 ) );
}
cbxServerAddr->blockSignals ( false );
}
}
void CConnectDlg::OnServerListItemDoubleClicked ( QTreeWidgetItem* Item,
int )
{
// if a server list item was double clicked, it is the same as if the
// connect button was clicked
if ( Item != nullptr )
{
OnConnectClicked();
}
}
void CConnectDlg::OnServerAddrEditTextChanged ( const QString& )
{
// in the server address combo box, a text was changed, remove selection
// in the server list (if any)
lvwServers->clearSelection();
}
void CConnectDlg::ShowAllMusicians ( const bool bState )
{
bShowAllMusicians = bState;
// update list
if ( bState )
{
lvwServers->expandAll();
}
else
{
lvwServers->collapseAll();
}
// update check box if necessary
if ( ( chbExpandAll->checkState() == Qt::Checked && !bShowAllMusicians ) ||
( chbExpandAll->checkState() == Qt::Unchecked && bShowAllMusicians ) )
{
chbExpandAll->setCheckState ( bState ? Qt::Checked : Qt::Unchecked );
}
}
void CConnectDlg::UpdateListFilter()
{
const QString sFilterText = edtFilter->text();
if ( !sFilterText.isEmpty() )
{
bListFilterWasActive = true;
const int iServerListLen = lvwServers->topLevelItemCount();
for ( int iIdx = 0; iIdx < iServerListLen; iIdx++ )
{
QTreeWidgetItem* pCurListViewItem = lvwServers->topLevelItem ( iIdx );
bool bFilterFound = false;
// search server name
if ( pCurListViewItem->text ( 0 ).indexOf ( sFilterText, 0, Qt::CaseInsensitive ) >= 0 )
{
bFilterFound = true;
}
// search location
if ( pCurListViewItem->text ( 3 ).indexOf ( sFilterText, 0, Qt::CaseInsensitive ) >= 0 )
{
bFilterFound = true;
}
// search childs
for ( int iCCnt = 0; iCCnt < pCurListViewItem->childCount(); iCCnt++ )
{
if ( pCurListViewItem->child ( iCCnt )->text ( 0 ).indexOf ( sFilterText, 0, Qt::CaseInsensitive ) >= 0 )
{
bFilterFound = true;
}
}
// only update Hide state if ping time was received
if ( !pCurListViewItem->text ( 1 ).isEmpty() || bShowCompleteRegList )
{
// only update hide and expand status if the hide state has to be changed to
// preserve if user clicked on expand icon manually
if ( ( pCurListViewItem->isHidden() && bFilterFound ) ||
( !pCurListViewItem->isHidden() && !bFilterFound ) )
{
pCurListViewItem->setHidden ( !bFilterFound );
pCurListViewItem->setExpanded ( bShowAllMusicians );
}
}
}
}
else
{
// if the filter was active but is now disabled, we have to update all list
// view items for the "ping received" hide state
if ( bListFilterWasActive )
{
const int iServerListLen = lvwServers->topLevelItemCount();
for ( int iIdx = 0; iIdx < iServerListLen; iIdx++ )
{
QTreeWidgetItem* pCurListViewItem = lvwServers->topLevelItem ( iIdx );
// if ping time is empty, hide item (if not already hidden)
if ( pCurListViewItem->text ( 1 ).isEmpty() && !bShowCompleteRegList )
{
pCurListViewItem->setHidden ( true );
}
else
{
// in case it was hidden, show it and take care of expand
if ( pCurListViewItem->isHidden() )
{
pCurListViewItem->setHidden ( false );
pCurListViewItem->setExpanded ( bShowAllMusicians );
}
}
}
bListFilterWasActive = false;
}
}
}
void CConnectDlg::OnConnectClicked()
{
// get the IP address to be used according to the following definitions:
// - if the list has focus and a line is selected, use this line
// - if the list has no focus, use the current combo box text
QList<QTreeWidgetItem*> CurSelListItemList = lvwServers->selectedItems();
if ( CurSelListItemList.count() > 0 )
{
// get the parent list view item
QTreeWidgetItem* pCurSelTopListItem =
GetParentListViewItem ( CurSelListItemList[0] );
// get host address from selected list view item as a string
strSelectedAddress =
pCurSelTopListItem->data ( 0, Qt::UserRole ).toString();
// store selected server name
strSelectedServerName = pCurSelTopListItem->text ( 0 );
// set flag that a server list item was chosen to connect
bServerListItemWasChosen = true;
}
else
{
strSelectedAddress = cbxServerAddr->currentText();
}
// tell the parent window that the connection shall be initiated
done ( QDialog::Accepted );
}
void CConnectDlg::OnTimerPing()
{
// send ping messages to the servers in the list
const int iServerListLen = lvwServers->topLevelItemCount();
for ( int iIdx = 0; iIdx < iServerListLen; iIdx++ )
{
CHostAddress CurServerAddress;
// try to parse host address string which is stored as user data
// in the server list item GUI control element
if ( NetworkUtil().ParseNetworkAddress (
lvwServers->topLevelItem ( iIdx )->
data ( 0, Qt::UserRole ).toString(),
CurServerAddress ) )
{
// if address is valid, send ping or the version and OS request
#ifdef ENABLE_CLIENT_VERSION_AND_OS_DEBUGGING
emit CreateCLServerListReqVerAndOSMes ( CurServerAddress );
#else
emit CreateCLServerListPingMes ( CurServerAddress );
#endif
// check if the number of child list items matches the number of
// connected clients, if not then request the client names
if ( lvwServers->topLevelItem ( iIdx )->text ( 6 ).toInt() !=
lvwServers->topLevelItem ( iIdx )->childCount() )
{
emit CreateCLServerListReqConnClientsListMes ( CurServerAddress );
}
}
}
}
void CConnectDlg::SetPingTimeAndNumClientsResult ( const CHostAddress& InetAddr,
const int iPingTime,
const int iNumClients )
{
// apply the received ping time to the correct server list entry
QTreeWidgetItem* pCurListViewItem = FindListViewItem ( InetAddr );
if ( pCurListViewItem )
{
// check if this is the first time a ping time is set
const bool bIsFirstPing = pCurListViewItem->text ( 1 ).isEmpty();
bool bDoSorting = false;
// update minimum ping time column (invisible, used for sorting) if
// the new value is smaller than the old value
int iMinPingTime = pCurListViewItem->text ( 4 ).toInt();
if ( iMinPingTime > iPingTime )
{
// update the minimum ping time with the new lowest value
iMinPingTime = iPingTime;
// we pad to a total of 8 characters with zeros to make sure the
// sorting is done correctly
pCurListViewItem->setText ( 4, QString ( "%1" ).arg (
iPingTime, 8, 10, QLatin1Char ( '0' ) ) );
// update the sorting (lowest number on top)
bDoSorting = true;
}
// for debugging it is good to see the current ping time in the list
// and not the minimum ping time -> overwrite the value for debugging
if ( bShowCompleteRegList )
{
iMinPingTime = iPingTime;
}
// Only show minimum ping time in the list since this is the important
// value. Temporary bad ping measurements are of no interest.
// Color definition: <= 25 ms green, <= 50 ms yellow, otherwise red
if ( iMinPingTime <= 25 )
{
pCurListViewItem->setForeground ( 1, Qt::darkGreen );
}
else
{
if ( iMinPingTime <= 50 )
{
pCurListViewItem->setForeground ( 1, Qt::darkYellow );
}
else
{
pCurListViewItem->setForeground ( 1, Qt::red );
}
}
// update ping text, take special care if ping time exceeds a
// certain value
if ( iMinPingTime > 500 )
{
pCurListViewItem->setText ( 1, ">500 ms" );
}
else
{
pCurListViewItem->
setText ( 1, QString().setNum ( iMinPingTime ) + " ms" );
}
// update number of clients text
if ( iNumClients >= pCurListViewItem->text ( 5 ).toInt() )
{
pCurListViewItem->
setText ( 2, QString().setNum ( iNumClients ) + " (full)" );
}
else
{
pCurListViewItem->
setText ( 2, QString().setNum ( iNumClients ) );
}
// update number of clients value (hidden)
pCurListViewItem->setText ( 6, QString().setNum ( iNumClients ) );
// this is the first time a ping time was received, set item to visible
if ( bIsFirstPing )
{
pCurListViewItem->setHidden ( false );
}
// Update sorting. Note that the sorting must be the last action for the
// current item since the topLevelItem ( iIdx ) is then no longer valid.
if ( bDoSorting && !bShowCompleteRegList ) // do not sort if "show all servers"
{
lvwServers->sortByColumn ( 4, Qt::AscendingOrder );
}
}
// if no server item has childs, do not show decoration
bool bAnyListItemHasChilds = false;
const int iServerListLen = lvwServers->topLevelItemCount();
for ( int iIdx = 0; iIdx < iServerListLen; iIdx++ )
{
// check if the current list item has childs
if ( lvwServers->topLevelItem ( iIdx )->childCount() > 0 )
{
bAnyListItemHasChilds = true;
}
}
if ( !bAnyListItemHasChilds )
{
lvwServers->setRootIsDecorated ( false );
}
// we may have changed the Hidden state for some items, if a filter was active, we now
// have to update it to void lines appear which do not satisfy the filter criteria
UpdateListFilter();
}
QTreeWidgetItem* CConnectDlg::FindListViewItem ( const CHostAddress& InetAddr )
{
const int iServerListLen = lvwServers->topLevelItemCount();
for ( int iIdx = 0; iIdx < iServerListLen; iIdx++ )
{
// compare the received address with the user data string of the
// host address by a string compare
if ( !lvwServers->topLevelItem ( iIdx )->
data ( 0, Qt::UserRole ).toString().
compare ( InetAddr.toString() ) )
{
return lvwServers->topLevelItem ( iIdx );
}
}
return nullptr;
}
QTreeWidgetItem* CConnectDlg::GetParentListViewItem ( QTreeWidgetItem* pItem )
{
// check if the current item is already the top item, i.e. the parent
// query fails and returns null
if ( pItem->parent() )
{
// we only have maximum one level, i.e. if we call the parent function
// we are at the top item
return pItem->parent();
}
else
{
// this item is already the top item
return pItem;
}
}
void CConnectDlg::DeleteAllListViewItemChilds ( QTreeWidgetItem* pItem )
{
// loop over all childs
while ( pItem->childCount() > 0 )
{
// get the first child in the list
QTreeWidgetItem* pCurChildItem = pItem->child ( 0 );
// remove it from the item (note that the object is not deleted)
pItem->removeChild ( pCurChildItem );
// delete the object to avoid a memory leak
delete pCurChildItem;
}
}
#ifdef ENABLE_CLIENT_VERSION_AND_OS_DEBUGGING
void CConnectDlg::SetVersionAndOSType ( CHostAddress InetAddr,
COSUtil::EOpSystemType eOSType,
QString strVersion )
{
// apply the received version and OS type to the correct server list entry
QTreeWidgetItem* pCurListViewItem = FindListViewItem ( InetAddr );
if ( pCurListViewItem )
{
// TEST since this is just a debug info, we just reuse the ping column (note
// the we have to replace the ping message emit with the version and OS request
// so that this works, see above code)
pCurListViewItem->
setText ( 1, strVersion + "/" + COSUtil::GetOperatingSystemString ( eOSType ) );
// a version and OS type was received, set item to visible
if ( pCurListViewItem->isHidden() )
{
pCurListViewItem->setHidden ( false );
}
}
}
#endif
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