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PacSafe.py
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PacSafe.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
PacSafe
A QGIS plugin
PacSAFE produces realistic natural hazard impact scenarios for better planning, preparedness and response activities for Pacific Countries
-------------------
begin : 2015-03-29
git sha : $Format:%H$
copyright : (C) 2015 by Secretariat of the Pacific Community
email : sachindras@spc.int
***************************************************************************/
/***************************************************************************
* *
* 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
from PyQt4.QtGui import QAction, QIcon, QMessageBox
from PyQt4.QtGui import *
import resources
#import resources_rc
from PyQt4.QtCore import *
from PyQt4.QtGui import *
import os, sys
import urllib2, webbrowser, traceback
# Initialize Qt resources from file resources.py
# Import the code for the dialog
from PacSafe_dialog import PacSafeDialog
import os.path
import os
#import safe.gui.widgets.dock
import time
import logging
LOGGER = logging.getLogger('PacSAFE')
class PacSafe:
"""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')[0:2]
locale_path = os.path.join(
self.plugin_dir,
'i18n',
'PacSafe_{}.qm'.format(locale))
splash_pix = QPixmap('splash.png')
splash = QSplashScreen(splash_pix, Qt.WindowStaysOnTopHint)
splash.setMask(splash_pix.mask())
splash.show()
QApplication.processEvents()
start =time.time()
while time.time() - start <= 1:
time.sleep(0.001)
QApplication.processEvents()
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 = PacSafeDialog()
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&PacSafe')
# TODO: We are going to let the user set this up in a future iteration
self.toolbar = self.iface.addToolBar(u'PacSafe')
self.toolbar.setObjectName(u'PacSafe')
# Load projects dynamically:
if os.path.exists(os.path.join(os.getcwd(), 'data')):
self.dataPath = os.path.join(os.getcwd(), 'data')
LOGGER.info("Setting data path to {0}".format(self.dataPath))
else:
self.dataPath = None
# Set a globally-accessible list of countries for which we have
# projects & data available. The two-letter abbreviation must match
# the name of the sub-directory in the project/data folders.
self.countryList = {"Fiji":"FJ", "Tonga":"TO"}
for c in sorted(self.countryList.keys()):
self.dlg.countryListWidget.addItem(c)
cl = self.dlg.countryListWidget
self.updateProjectList(1)
cl.currentIndexChanged.connect(self.updateProjectList)
#event signals/slots
btnDataFolder = self.dlg.btnDataFolder
btnDataFolder.clicked.connect(self.selectDataFolder)
btnProject = self.dlg.btnProject
btnProject.clicked.connect(self.openProject)
btnRemote = self.dlg.btnRemote
btnRemote.clicked.connect(self.openRemote)
btnHelp = self.dlg.btnHelp
btnHelp.clicked.connect(self.help)
btnClose = self.dlg.btnClose
btnClose.clicked.connect(self.dlg.close)
def selectDataFolder(self):
"""
Set the data directory, where the projects and data are maintained
"""
self.dlg.dataPath.setText(QFileDialog.getExistingDirectory())
if self.dlg.dataPath.text():
self.dataPath = self.dlg.dataPath.text()
cl = self.dlg.countryListWidget
self.updateProjectList(0)
cl.currentIndexChanged.connect(self.updateProjectList)
else:
self.dlg.dataPath.setText(self.dataPath)
def help(self):
webbrowser.open_new_tab('http://pacsafe-doc.readthedocs.io/en/latest/')
self.dlg.close()
def updateProjectList(self, i):
"""
Update the list of locally-available projects based on the selected
country.
"""
cl = self.dlg.countryListWidget
self.cv = cl.currentText()
if self.dataPath is not None:
prjPath = os.path.join(self.dataPath, self.countryList[self.cv])
self.dlg.listWidget.clear()
if os.path.exists(prjPath):
for f in os.listdir(prjPath):
if f.endswith(".qgs"):
f = f.replace(".qgs", "")
f = f.replace("_", " ")
f = f.title()
item = QListWidgetItem(f)
self.dlg.listWidget.addItem(item)
else:
msg = ("Selected data path does not have any country sub-directories. "
"Please select the directory where the country projects are saved.")
QMessageBox.about(self.dlg, "PacSAFE project folders missing", msg)
def openRemote(self):
try:
#QMessageBox.about(self.dlg, "Remote Projects", "Open Remote Projects...")
local = []
remote =[]
#build list of remote index
url = "https://raw.githubusercontent.com/sopac/pacsafe-projects/master/{0}/index.txt".format(self.countryList[self.cv].lower())
request = urllib2.Request(url, headers={'User-Agent': 'Mozilla/5.0'})
response = urllib2.urlopen(request, timeout=100)
#response = urllib2.urlopen(url)
for l in response:
if l.strip().endswith(".qgs"):
#print l.strip()
remote.append(l.strip())
#build local list
path = os.path.join(self.dataPath, self.countryList[self.cv].upper())
for f in os.listdir(path):
if f.endswith(".qgs"):
local.append(f.strip())
#compare list
flist = local + remote
flist = list(set(flist))
#print flist
getlist = []
for f in flist:
if f not in local:
getlist.append(f)
msg = "There are no new remote projects available for {0}.".format(self.cv)
sync = False
if len(getlist) > 0:
sync = True
diff = len(getlist)
msg = "There are " + str(diff) + " new project(s) available for {0}.\r\nClick Ok To Synchronise.".format(self.cv)
QMessageBox.about(self.dlg, "Remote Projects", msg)
if sync == True:
#sync/download new layers
for n in getlist:
print n
p_url = "https://raw.githubusercontent.com/sopac/pacsafe-projects/master/{0}".format(self.countryList[self.cv]) + n
request = urllib2.Request(url, headers={'User-Agent': 'Mozilla/5.0'})
tf = urllib2.urlopen(request, timeout=100)
#tf = urllib2.urlopen()
with open(path + "/" + n, "wb") as lf:
lf.write(tf.read())
#refresh project listing
self.dlg.listWidget.clear()
for f in os.listdir(path):
if f.endswith(".qgs"):
f = f.replace(".qgs", "")
f = f.replace("_", " ")
f = f.title()
item = QListWidgetItem(f)
self.dlg.listWidget.addItem(item)
QMessageBox.about(self.dlg, "Remote Projects",
("Remote Projects Synchronised.\r\n"
"Please Reopen PacSAFE Project Opener."))
self.dlg.close()
except:
e = sys.exc_info()[0]
e = traceback.format_exc()
QMessageBox.critical(None, 'Error!', "Error Occurred, Ensure Internet Connectivity.\r\n" + str(e), QMessageBox.Abort)
def openProject(self):
lw = self.dlg.listWidget
if len(lw.selectedItems()) == 0:
QMessageBox.about(self.dlg, "Sorry", "No scenario/project selected!")
return
pn = self.dlg.listWidget.currentItem().text()
proj = pn.replace(" ", "_").lower() + ".qgs"
path = os.path.join(self.dataPath, self.countryList[self.cv], proj)
self.iface.addProject(path)
self.dlg.hide()
# 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('PacSafe', 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.iface.addPluginToMenu(
self.menu,
action)
self.actions.append(action)
return action
def initGui(self):
"""Create the menu entries and toolbar icons inside the QGIS GUI."""
icon_path = ':/icon.png'
self.add_action(
icon_path,
text=self.tr(u'PacSafe'),
callback=self.run,
parent=self.iface.mainWindow())
def unload(self):
"""Removes the plugin menu item and icon from QGIS GUI."""
for action in self.actions:
self.iface.removePluginMenu(
self.tr(u'&PacSafe'),
action)
self.iface.removeToolBarIcon(action)
# remove the toolbar
del self.toolbar
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