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Added open WMS search interface from Mathias Walker

Mathias Walker <mwa at sourcepole.ch>, Sourcepole AG


git-svn-id: http://svn.osgeo.org/qgis/trunk@10380 c8812cc2-4d05-0410-92ff-de0c093fc19c
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timlinux
timlinux committed Mar 21, 2009
1 parent c600191 commit d4faea41452dc9d75724473f71be9041d6e3ab3a
Showing with 436 additions and 219 deletions.
  1. +194 −16 src/app/qgsserversourceselect.cpp
  2. +15 −2 src/app/qgsserversourceselect.h
  3. +6 −1 src/plugins/CMakeLists.txt
  4. +221 −200 src/ui/qgsserversourceselectbase.ui
@@ -2,8 +2,11 @@
qgserversourceselect.cpp - selector for WMS servers, etc.
-------------------
begin : 3 April 2005
copyright : (C) 2005 by Brendan Morley
email : morb at ozemail dot com dot au
copyright :
original : (C) 2005 by Brendan Morley email : morb at ozemail dot com dot au
wms search : (C) 2009 Mathias Walker <mwa at sourcepole.ch>, Sourcepole AG
***************************************************************************/

/***************************************************************************
@@ -16,29 +19,31 @@
***************************************************************************/
/* $Id$ */

#include "qgsserversourceselect.h"

#include "../providers/wms/qgswmsprovider.h"
#include "qgis.h" // GEO_EPSG_CRS_ID
#include "qgscontexthelp.h"
#include "qgscoordinatereferencesystem.h"
#include "qgsgenericprojectionselector.h"

#include "qgshttptransaction.h"
#include "qgslogger.h"
#include "qgsmessageviewer.h"
#include "qgsnewhttpconnection.h"
#include "qgsnumericsortlistviewitem.h"
#include "qgsproviderregistry.h"
#include "qgscoordinatereferencesystem.h"
#include "../providers/wms/qgswmsprovider.h"
#include "qgscontexthelp.h"

#include "qgsproject.h"
#include "qgsproviderregistry.h"
#include "qgsserversourceselect.h"
#include <qgisinterface.h>

#include "qgsmessageviewer.h"

#include <QButtonGroup>
#include <QDomDocument>
#include <QHeaderView>
#include <QImageReader>
#include <QMap>
#include <QMessageBox>
#include <QPicture>
#include <QSettings>
#include <QButtonGroup>
#include <QMap>
#include <QImageReader>
#include "qgslogger.h"
#include "qgis.h" // GEO_EPSG_CRS_ID
#include <QUrl>



@@ -108,6 +113,17 @@ QgsServerSourceSelect::QgsServerSourceSelect( QWidget * parent, Qt::WFlags fl )

// set up the default WMS Coordinate Reference System
labelCoordRefSys->setText( descriptionForEpsg( m_Epsg ) );


//
// For wms search tab
//
tableWidgetWMSList->setColumnWidth(0, 250);
tableWidgetWMSList->setColumnWidth(1, 150);
tableWidgetWMSList->setColumnWidth(2, 250);
tableWidgetWMSList->verticalHeader()->hide();

connect(tableWidgetWMSList, SIGNAL(itemSelectionChanged()), this, SLOT(wmsSelectionChanged()));
}

QgsServerSourceSelect::~QgsServerSourceSelect()
@@ -718,4 +734,166 @@ void QgsServerSourceSelect::addDefaultServers()
"need to set the proxy settings in the QGIS options dialog." ) + "</p>" );
}

bool QgsServerSourceSelect::retrieveSearchResults(const QString& searchTerm, QByteArray& httpResponse)
{
// TODO: test proxy
// read proxy settings: code from QgsWmsProvider::retrieveUrl()
QSettings settings;
QString proxyHost, proxyUser, proxyPassword;
int proxyPort;
QNetworkProxy::ProxyType proxyType = QNetworkProxy::NoProxy;

bool proxyEnabled = settings.value( "proxy/proxyEnabled", "0" ).toBool();
if(proxyEnabled)
{
proxyHost = settings.value( "proxy/proxyHost", "" ).toString();
proxyPort = settings.value( "proxy/proxyPort", "" ).toString().toInt();
proxyUser = settings.value( "proxy/proxyUser", "" ).toString();
proxyPassword = settings.value( "proxy/proxyPassword", "" ).toString();
QString proxyTypeString = settings.value( "proxy/proxyType", "" ).toString();
if(proxyTypeString == "DefaultProxy")
{
proxyType = QNetworkProxy::DefaultProxy;
}
else if(proxyTypeString == "Socks5Proxy")
{
proxyType = QNetworkProxy::Socks5Proxy;
}
else if(proxyTypeString == "HttpProxy")
{
proxyType = QNetworkProxy::HttpProxy;
}
#if QT_VERSION >= 0x040400
else if(proxyTypeString == "HttpCachingProxy")
{
proxyType = QNetworkProxy::HttpCachingProxy;
}
else if(proxyTypeString == "FtpCachingProxy")
{
proxyType = QNetworkProxy::FtpCachingProxy;
}
#endif
}

QUrl url(QString("http://geopole.org/wms/search?search=%1&type=rss").arg(searchTerm));
QgsHttpTransaction http(url.toEncoded(),
proxyHost, proxyPort, proxyUser, proxyPassword, proxyType );

bool httpOk = http.getSynchronously( httpResponse );
if ( !httpOk )
{
// TODO: error handling
return false;
}

// TODO: check doctype?

return true;
}

void QgsServerSourceSelect::addWMSListRow(const QDomElement& item, int row)
{
QDomElement title = item.firstChildElement("title");
addWMSListItem(title, row, 0);
QDomElement link = item.firstChildElement("link");
addWMSListItem(link, row, 1);
QDomElement description = item.firstChildElement("description");
addWMSListItem(description, row, 2);
}

void QgsServerSourceSelect::addWMSListItem(const QDomElement& el, int row, int column)
{
if (!el.isNull())
{
QTableWidgetItem* tableItem = new QTableWidgetItem(el.text());
// TODO: add linebreaks to long tooltips?
tableItem->setToolTip(el.text());
tableWidgetWMSList->setItem(row, column, tableItem);
}
}

void QgsServerSourceSelect::on_btnClose_clicked()
{
accept();
}

void QgsServerSourceSelect::on_btnSearch_clicked()
{
// clear results
tableWidgetWMSList->clearContents();
tableWidgetWMSList->setRowCount(0);

// disable Add WMS button
btnAddWMS->setEnabled(false);

// retrieve search results
QByteArray httpResponse;
bool success = retrieveSearchResults(leSearchTerm->text(), httpResponse);
if (!success)
{
// TODO: error handling
return;
}

// parse results
QDomDocument doc("RSS");
if (!doc.setContent(httpResponse))
{
// TODO: error handling
return;
}

QDomNodeList list = doc.elementsByTagName("item");
tableWidgetWMSList->setRowCount(list.size());
for (int i=0;i<list.size();i++)
{
if (list.item(i).isElement())
{
QDomElement item = list.item(i).toElement();
addWMSListRow(item, i);
}
}
}

void QgsServerSourceSelect::on_btnAddWMS_clicked()
{
// TODO: deactivate button if dialog is open?
// TODO: remove from config on close?

int selectedRow = tableWidgetWMSList->currentRow();
if (selectedRow == -1)
{
return;
}

QString wmsTitle = tableWidgetWMSList->item(selectedRow, 0)->text();
QString wmsUrl = tableWidgetWMSList->item(selectedRow, 1)->text();

QSettings settings;
if (settings.contains(QString("Qgis/connections-wms/%1/url").arg(wmsTitle)))
{
QString msg = tr("The %1 connection already exists. Do you want to overwrite it?").arg(wmsTitle);
QMessageBox::StandardButton result = QMessageBox::information( this, tr( "Confirm Overwrite" ), msg, QMessageBox::Ok | QMessageBox::Cancel );
if ( result != QMessageBox::Ok )
{
return;
}
}

// add selected WMS to config and mark as current
settings.setValue(QString("Qgis/connections-wms/%1/url").arg(wmsTitle), wmsUrl);
settings.setValue( "/Qgis/connections-wms/selected", wmsTitle);
populateConnectionList();
tabWidget->setCurrentIndex( 0 );
}

void QgsServerSourceSelect::wmsSelectionChanged()
{
btnAddWMS->setEnabled(tableWidgetWMSList->currentRow() != -1);
}



//
//
// ENDS
@@ -2,8 +2,8 @@
qgserversourceselect.h - selector for WMS servers, etc.
-------------------
begin : 3 April 2005
copyright : (C) 2005 by Brendan Morley
email : morb at ozemail dot com dot au
original : (C) 2005 by Brendan Morley email : morb at ozemail dot com dot au
wms search : (C) 2009 Mathias Walker <mwa at sourcepole.ch>, Sourcepole AG
***************************************************************************/

/***************************************************************************
@@ -27,6 +27,8 @@ class QgisApp;
class QgsWmsProvider;
class QButtonGroup;
class QgsNumericSortTreeWidgetItem;
class QDomDocument;
class QDomElement;

/*!
* \brief Dialog to create connections and add layers from WMS, etc.
@@ -180,7 +182,18 @@ class QgsServerSourceSelect : public QDialog, private Ui::QgsServerSourceSelectB
//! The WMS provider that retrieves information for this dialog
QgsWmsProvider * mWmsProvider;


bool retrieveSearchResults(const QString& searchTerm, QByteArray& httpResponse);
void addWMSListRow(const QDomElement& item, int row);
void addWMSListItem(const QDomElement& el, int row, int column);

static const int context_id = 710979116;

private slots:
void on_btnClose_clicked();
void on_btnSearch_clicked();
void on_btnAddWMS_clicked();
void wmsSelectionChanged();
};


@@ -1,4 +1,9 @@
SUBDIRS (copyright_label delimited_text interpolation north_arrow scale_bar)
SUBDIRS (copyright_label
delimited_text
interpolation
north_arrow
scale_bar
)

IF (POSTGRES_FOUND)
SUBDIRS (spit)

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