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sos_client.py
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sos_client.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
SOSClient
A QGIS plugin
OGC Sensor Observation Sensor Client
-------------------
begin : 2014-11-26
git sha : $Format:%H$
copyright : (C) 2014 by Rubén Mosquera Varela
email : ruben.mosquera.varela@gmail.com
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
"""
from PyQt4.QtCore import QSettings, QTranslator, qVersion, QCoreApplication, QFile
from PyQt4.QtGui import QMenu, QAction, QIcon, QMessageBox
from qgis.gui import QgsMessageBar
from ui import resources_rc #@UnusedImport
from sos_client_dialog import SOSClientDialog
from xmlviewer_dialog import XmlViewerDialog
from xmlhighlighter import XmlHighlighter
from sosplot_dialog import SOSPlotDialog
import os.path
class SOSClient:
"""QGIS Plugin Implementation."""
def __init__(self, iface):
"""Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgsInterface
"""
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value('locale/userLocale')
locale_path = os.path.join(
self.plugin_dir,
'i18n',
'{}.qm'.format(locale))
if not os.path.exists(locale_path):
locale = locale.split('_')[0]
locale_path = os.path.join(
self.plugin_dir,
'i18n',
'{}.qm'.format(locale))
if os.path.exists(locale_path):
self.translator = QTranslator()
self.translator.load(locale_path)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
# Create the dialog (after translation) and keep reference
self.dlg = SOSClientDialog(iface = self.iface)
# Declare instance attributes
self.actions = []
self.menu = QMenu(self.tr(u'&SOS Client'))
self.toolbar = self.iface.addToolBar(u'SOSClient')
self.toolbar.setObjectName(u'SOSClient')
# noinspection PyMethodMayBeStatic
def tr(self, message):
"""Get the translation for a string using Qt translation API.
We implement this ourselves since we do not inherit QObject.
:param message: String for translation.
:type message: str, QString
:returns: Translated version of message.
:rtype: QString
"""
# noinspection PyTypeChecker,PyArgumentList,PyCallByClass
return QCoreApplication.translate('SOSClient', message)
def add_action(
self,
icon_path,
text,
callback,
enabled_flag=True,
add_to_menu=True,
add_to_toolbar=True,
status_tip=None,
whats_this=None,
parent=None):
"""Add a toolbar icon to the toolbar.
:param icon_path: Path to the icon for this action. Can be a resource
path (e.g. ':/plugins/foo/bar.png') or a normal file system path.
:type icon_path: str
:param text: Text that should be shown in menu items for this action.
:type text: str
:param callback: Function to be called when the action is triggered.
:type callback: function
:param enabled_flag: A flag indicating if the action should be enabled
by default. Defaults to True.
:type enabled_flag: bool
:param add_to_menu: Flag indicating whether the action should also
be added to the menu. Defaults to True.
:type add_to_menu: bool
:param add_to_toolbar: Flag indicating whether the action should also
be added to the toolbar. Defaults to True.
:type add_to_toolbar: bool
:param status_tip: Optional text to show in a popup when mouse pointer
hovers over the action.
:type status_tip: str
:param parent: Parent widget for the new action. Defaults None.
:type parent: QWidget
:param whats_this: Optional text to show in the status bar when the
mouse pointer hovers over the action.
:returns: The action that was created. Note that the action is also
added to self.actions list.
:rtype: QAction
"""
icon = QIcon(icon_path)
action = QAction(icon, text, parent)
action.triggered.connect(callback)
action.setEnabled(enabled_flag)
if status_tip is not None:
action.setStatusTip(status_tip)
if whats_this is not None:
action.setWhatsThis(whats_this)
if add_to_toolbar:
self.toolbar.addAction(action)
if add_to_menu:
self.menu.addAction (action)
self.actions.append(action)
return action
def initGui(self):
"""Create the menu entries and toolbar icons inside the QGIS GUI."""
self.add_action(
':/plugins/SOSClient/icon_add.png',
text=self.tr(u'SOS Client'),
callback=self.run,
parent=self.iface.mainWindow())
self.add_action(
':/plugins/SOSClient/icon_xml.png',
text=self.tr(u'Show XML'),
callback=self.showLayerXml,
parent=self.iface.mainWindow(),
add_to_toolbar=True)
self.add_action(
':/plugins/SOSClient/icon_plot.png',
text=self.tr(u'Plot'),
callback=self.showPlotDialog,
parent=self.iface.mainWindow(),
add_to_toolbar=True)
self.add_action(
':/plugins/SOSClient/icon.png',
text=self.tr(u'About'),
callback=self.about,
parent=self.iface.mainWindow(),
add_to_toolbar=False)
self.menu.setIcon(QIcon(':/plugins/SOSClient/icon.png'))
self.iface.webMenu().addMenu (self.menu)
def unload(self):
"""Removes the plugin menu item and icon from QGIS GUI."""
for action in self.actions:
self.iface.removeToolBarIcon(action)
self.iface.webMenu().removeAction(self.menu.menuAction())
def run(self):
"""Run method that performs all the real work"""
# show the dialog
self.dlg.show()
# Run the dialog event loop
result = self.dlg.exec_()
# See if OK was pressed
if result:
# Do something useful here - delete the line containing pass and
# substitute with your code.
pass
def showLayerXml (self):
layer = self.iface.activeLayer()
if layer == None:
self.iface.messageBar().pushMessage (self.tr(u'SOS Client'),self.tr("You must select a layer"), QgsMessageBar.WARNING, 10)
return
xml = layer.customProperty("xml")
if len (xml):
dlg = XmlViewerDialog (self.iface.mainWindow(), QFile(xml), XmlHighlighter)
dlg.show()
dlg.exec_()
else:
self.iface.messageBar().pushMessage (self.tr(u'SOS Client'),self.tr("Layer have not a xml property"), QgsMessageBar.WARNING, 10)
def showPlotDialog (self):
try:
dlg = SOSPlotDialog (self.iface.activeLayer(), parent=self.iface.mainWindow())
dlg.show()
dlg.exec_()
except Exception as error:
self.iface.messageBar().pushMessage (self.tr(u'SOS Client'),unicode(error), QgsMessageBar.CRITICAL, 10)
def about(self):
#TODO
QMessageBox.information(self.iface.mainWindow(), self.tr(u"About SOS Client"),
self.tr(u"SOS Client Plugin<br />This plugin request observations data from OGC SOS server to create a vector layer.<br />Also provides tools to plot observations data<br /><br />Author: Rubén Mosquera Varela<br />E-mail: <a href=\"mailto:ruben.mosquera.varela@gmail.com\">ruben.mosquera.varela@gmail.com</a>"))