class AppMainWindow(Ui_mainWindow, QMainWindow):
"""
Main application window
"""
# internal decorator to perform common checks required
# for many calls
#############################
class CallChecker(object):
def __init__(self):
pass
def setWindow(self, main_window):
self.main_window = main_window
def __call__(self, f):
@functools.wraps(f)
def wrapper(*args, **kw):
self.main_window.setEnabled(False)
try:
logUICall.log('function call %s from module %s' % (f.__name__, f.__module__), logUICall.DEBUG)
return f(*args, **kw)
except SIDDUIException as uie:
logUICall.log(uie, logUICall.WARNING)
self.main_window.ui.statusbar.showMessage(get_ui_string('app.error.ui'))
except SIDDException as se:
logUICall.log(se, logUICall.WARNING)
self.main_window.ui.statusbar.showMessage(get_ui_string('app.error.model'))
except Exception as e:
logUICall.log(e, logUICall.ERROR)
self.main_window.ui.statusbar.showMessage(get_ui_string('app.error.unexpected'))
finally:
self.main_window.setEnabled(True)
return wrapper
apiCallChecker = CallChecker()
# CONSTANTS
#############################
UI_WINDOW_GEOM = 'app_main/geometry'
UI_WINDOW_STATE = 'app_main/windowState'
TAB_DATA, TAB_MS, TAB_MOD, TAB_RESULT = range(4)
# constructor / destructor
#############################
def __init__(self, qtapp, app_config):
"""
constructor
- initialize UI elements
- connect UI elements to callback
"""
# create UI
super(AppMainWindow, self).__init__()
AppMainWindow.apiCallChecker.setWindow(self)
self.qtapp = qtapp
self.app_config = app_config
self.taxonomy = get_taxonomy(app_config.get('options', 'taxonomy', 'gem'))
self.ui = Ui_mainWindow()
self.ui.setupUi(self)
self.settings = QSettings(SIDD_COMPANY, '%s %s' %(SIDD_APP_NAME, SIDD_VERSION));
self.restoreGeometry(self.settings.value(self.UI_WINDOW_GEOM).toByteArray());
self.restoreState(self.settings.value(self.UI_WINDOW_STATE).toByteArray());
self.lb_map_location = QLabel(self)
self.lb_map_location.resize(self.ui.statusbar.width()/3, self.ui.statusbar.height())
self.ui.statusbar.addPermanentWidget(self.lb_map_location)
self.msdb_dao = MSDatabaseDAO(FILE_MS_DB)
self.tab_datainput = WidgetDataInput(self)
self.ui.mainTabs.addTab(self.tab_datainput, get_ui_string("app.window.tab.input"))
self.tab_ms = WidgetMappingSchemes(self)
self.ui.mainTabs.addTab(self.tab_ms, get_ui_string("app.window.tab.ms"))
self.tab_mod = WidgetSecondaryModifier(self)
self.ui.mainTabs.addTab(self.tab_mod, get_ui_string("app.window.tab.mod"))
self.tab_result = WidgetResult(self)
self.ui.mainTabs.addTab(self.tab_result, get_ui_string("app.window.tab.result"))
self.previewInput = True
self.about = DialogAbout(self)
self.about.setModal(True)
self.dlgAttrRange = DialogAttrRanges()
self.dlgAttrRange.setModal(True)
self.progress = DialogApply(self)
self.progress.setModal(True)
self.proc_options = DialogProcessingOptions(self)
self.proc_options.setModal(True)
# connect menu action to slots (ui events)
self.ui.mainTabs.currentChanged.connect(self.tabChanged)
self.ui.actionProject_Blank.triggered.connect(self.createBlank)
self.ui.actionUsing_Data_Wizard.triggered.connect(self.createWizard)
self.ui.actionOpen_Existing.triggered.connect(self.loadProj)
self.ui.actionSave.triggered.connect(self.saveProj)
self.ui.actionSave_as.triggered.connect(self.saveProjAs)
self.ui.actionExit.triggered.connect(self.close)
self.ui.actionData_Input.triggered.connect(self.changeTab)
self.ui.actionMapping_Schemes.triggered.connect(self.changeTab)
self.ui.actionResult.triggered.connect(self.changeTab)
self.ui.actionProcessing_Options.triggered.connect(self.setProcessingOptions)
self.ui.actionAbout.triggered.connect(self.showAbout)
# set project to None and adjust ui as needed
self.closeProject()
self.ui.statusbar.showMessage(get_ui_string("app.status.ready"))
# perform clean up from previous runs
try:
delete_folders_in_dir(get_temp_dir(), "tmp*")
except:
# cleanup is not-critical. no action taken even if fails
pass
# hide features
if not app_config.get('options', 'parse_modifier', True, bool):
self.tab_mod.setVisible(False)
self.ui.mainTabs.removeTab(self.TAB_MOD)
self.TAB_MOD = self.TAB_MS
self.TAB_RESULT -= 1
# hide view menu
self.ui.menuView.menuAction().setVisible(False)
# hide data wizard
self.ui.actionUsing_Data_Wizard.setVisible(False)
# event handlers
#############################
@pyqtSlot(QCloseEvent)
def resizeEvent(self, event):
""" handle window resize """
self.ui.mainTabs.resize(self.width(), self.height()-40)
@pyqtSlot(QCloseEvent)
def closeEvent(self, event):
self.closeProject()
self.settings.setValue(self.UI_WINDOW_GEOM, self.saveGeometry());
self.settings.setValue(self.UI_WINDOW_STATE, self.saveState());
self.msdb_dao.close()
super(AppMainWindow, self).closeEvent(event)
@logUICall
@pyqtSlot()
def createBlank(self):
""" create a new project """
# create new project file
project = Project(self.app_config, self.taxonomy)
# open project and sync UI
self.setProject(project, skipVerify=True)
self.ui.statusbar.showMessage(get_ui_string("app.status.project.created"))
@logUICall
@pyqtSlot()
def createWizard(self):
try:
# should not update preview while using wizard
self.setVisible(False)
self.previewInput = False
wizard = WidgetDataWizard(self, Project(self.app_config, self.taxonomy))
if wizard.exec_() == QDialog.Accepted:
# setProject makes call to GIS component that requires visibility
self.setVisible(True)
self.previewInput = True
self.setProject(wizard.project)
self.ui.statusbar.showMessage(get_ui_string("app.status.project.created"))
# else
# do nothing?
except:
pass
finally:
# return to normal window
# these calls are reached
# 1. in case any exception occurs,
# 2. wizard finished or cancelled
self.setVisible(True)
self.previewInput = True
@logUICall
@pyqtSlot()
def loadProj(self):
""" open file dialog to load an existing application """
self.getOpenFileName(self,
get_ui_string("app.window.msg.project.open"),
get_ui_string("app.extension.db"),
self.openProjectFile)
self.ui.statusbar.showMessage(get_ui_string("app.status.project.loaded"))
@logUICall
@pyqtSlot()
def saveProj(self):
""" save active project """
if self.project is None:
return
try:
self.project.sync(SyncModes.Write)
self.ui.statusbar.showMessage(get_ui_string("app.status.project.saved"))
except SIDDProjectException as se:
if se.error == ProjectErrors.FileNotSet:
self.saveProjAs()
@logUICall
@pyqtSlot()
def saveProjAs(self):
if self.project is None:
return
filename = QFileDialog.getSaveFileName(self,
get_ui_string("app.window.msg.project.create"),
get_app_dir(),
get_ui_string("app.extension.db"))
# no need to check for file overwrite, because QFileDialog return always confirmed overwrite
if not filename.isNull():
filename = str(filename)
self.project.set_project_path(filename)
self.project.sync(SyncModes.Write)
self.saveLastOpenDir(filename[0:filename.rfind("/")])
self.ui.statusbar.showMessage(get_ui_string("app.status.project.saved"))
@logUICall
@pyqtSlot()
def setProcessingOptions(self):
if self.project is None:
return
# set options to be those defined in project
self.proc_options.resetOptions()
for attribute in dir(self.proc_options):
try:
proc_attribute = self.project.operator_options['proc.%s'%attribute]
setattr(self.proc_options, attribute, proc_attribute)
except:
# for empty project, this is the first time proc.options is set
# just use default from proc_option dialogbox
pass
if self.proc_options.exec_() == QDialog.Accepted:
for attribute in dir(self.proc_options):
self.project.operator_options['proc.%s'%attribute] = getattr(self.proc_options, attribute)
# alert user
answer = QMessageBox.question(self,
get_ui_string("app.confirm.title"),
get_ui_string("app.confirm.build.exposure"),
buttons = QMessageBox.No | QMessageBox.Yes,
defaultButton=QMessageBox.No)
if answer == QMessageBox.No:
return
self.buildExposure()
@logUICall
@pyqtSlot()
def showAbout(self):
"""
event handler for menu item
show about box
"""
self.about.setVisible(True)
@logUICall
@pyqtSlot()
def changeTab(self):
"""
event handler for menu item in menu
- switch view to tab according to menu item pushed
"""
sender = self.sender()
if sender == self.ui.actionData_Input:
self.showTab(self.TAB_DATA)
elif sender == self.ui.actionMapping_Schemes:
self.showTab(self.TAB_MS)
elif sender == self.ui.actionResult:
self.showTab(self.TAB_RESULT)
else:
logUICall.log('\tdo nothing. should not even be here', logUICall.WARNING)
@logUICall
@pyqtSlot(int)
def tabChanged(self, index):
if index == self.TAB_RESULT:
self.lb_map_location.setVisible(True)
else:
self.lb_map_location.setVisible(False)
# public methods
#############################
@apiCallChecker
def openProjectFile(self, path_to_file):
"""
load project from given path
shows error if path does not exist
"""
# NOTE: set_project_path will create new project if path_to_file
# does not exist, os.path.exists check is not optional
if os.path.exists(path_to_file):
# read file to create project
project = Project(self.app_config, self.taxonomy)
project.set_project_path(path_to_file)
project.sync(SyncModes.Read)
# open project and sync UI
self.setProject(project)
@apiCallChecker
def setProject(self, project, skipVerify=False):
""" open a project and sync UI accordingly"""
# close and reset UI
self.closeProject()
self.project = project
# sync ui
self.tab_datainput.setProject(project)
# set processing options
for attribute in dir(self.proc_options):
if self.project.operator_options.has_key('proc.%s'%attribute):
setattr(self.proc_options, attribute, self.project.operator_options['proc.%s'%attribute])
if not skipVerify:
# verify to make sure input file are still in same place
self.verifyInputs()
if self.project.ms is not None:
self.visualizeMappingScheme(self.project.ms)
self.ui.mainTabs.setTabEnabled(self.TAB_MS, True)
self.ui.mainTabs.setTabEnabled(self.TAB_MOD, True)
self.ui.mainTabs.setTabEnabled(self.TAB_DATA, True)
self.ui.mainTabs.setTabEnabled(self.TAB_RESULT, True)
self.ui.actionSave.setEnabled(True)
self.ui.actionSave_as.setEnabled(True)
self.tab_result.set_project(project)
@apiCallChecker
def closeProject(self):
""" close opened project and update UI elements accordingly """
# adjust UI in application window
self.tab_result.closeAll() # this call must happen first.
# otherwise, it locks temporary GIS files
self.ui.mainTabs.setTabEnabled(self.TAB_DATA, False)
self.ui.mainTabs.setTabEnabled(self.TAB_MS, False)
self.ui.mainTabs.setTabEnabled(self.TAB_MOD, False)
self.ui.mainTabs.setTabEnabled(self.TAB_RESULT, False)
self.showTab(self.TAB_DATA)
# disable menu/menu items
self.ui.actionSave.setEnabled(False)
self.ui.actionSave_as.setEnabled(False)
self.ui.actionMapping_Schemes.setEnabled(False)
self.ui.actionResult.setEnabled(False)
self.ui.actionProcessing_Options.setEnabled(False)
if getattr(self, 'project', None) is not None:
# save existing project is needed
if self.project.require_save:
ans = QMessageBox.question(self,
get_ui_string("app.window.msg.project.not_saved"),
get_ui_string("app.window.msg.project.save_or_not"),
buttons=QMessageBox.Yes|QMessageBox.No,
defaultButton=QMessageBox.Yes)
if ans == QMessageBox.Yes:
self.saveProj()
# adjust UI in tabs
self.tab_datainput.closeProject()
self.tab_ms.clearMappingScheme()
self.tab_mod.closeMappingScheme()
self.project.clean_up()
del self.project
self.project = None
@apiCallChecker
def verifyInputs(self):
""" perform checks on current dataset provided and update UI accordingly """
# remove result
self.tab_result.closeResult()
# verify current dataset
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.processing"))
# invoke asynchronously
invoke_async(get_ui_string("app.status.processing"), self.project.verify_data)
self.tab_datainput.showVerificationResults()
# always allow mapping scheme
self.ui.mainTabs.setTabEnabled(self.TAB_MS, True)
self.ui.mainTabs.setTabEnabled(self.TAB_MOD, True)
self.ui.actionMapping_Schemes.setEnabled(True)
self.ui.actionResult.setEnabled(True)
self.ui.actionProcessing_Options.setEnabled(True)
self.ui.statusbar.showMessage(get_ui_string("app.status.input.verified"))
@apiCallChecker
def buildMappingScheme(self):
""" build mapping scheme with given data """
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.processing"))
# invoke asynchronously
try:
invoke_async(get_ui_string("app.status.processing"), self.project.build_ms)
except SIDDException as err:
# different error message used in this case
raise SIDDUIException(get_ui_string('project.error.sampling', str(err)))
self.visualizeMappingScheme(self.project.ms)
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.created"))
@apiCallChecker
def createEmptyMS(self):
""" build an empty mapping scheme tree for user to manipulate manually """
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.processing"))
# invoke asynchronously
invoke_async(get_ui_string("app.status.processing"), self.project.create_empty_ms)
self.visualizeMappingScheme(self.project.ms)
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.created"))
@apiCallChecker
def appendMSBranch(self, node, branch):
""" append a branch (from library) to a node in a mapping scheme tree """
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.processing"))
self.project.ms.append_branch(node, branch)
self.visualizeMappingScheme(self.project.ms)
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.modified"))
@apiCallChecker
def deleteMSBranch(self, node):
""" delete selected node and children from mapping scheme tree """
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.processing"))
self.project.ms.delete_branch(node)
self.visualizeMappingScheme(self.project.ms)
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.modified"))
@apiCallChecker
def exportMS(self, path, format):
""" export mapping scheme leaves as CSV """
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.processing"))
# invoke asynchronously
invoke_async(get_ui_string("app.status.processing"), self.project.export_ms, path, format)
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.exported"))
@apiCallChecker
def loadMS(self, path):
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.processing"))
# invoke asynchronously
invoke_async(get_ui_string("app.status.processing"), self.project.load_ms, path)
self.visualizeMappingScheme(self.project.ms)
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.created"))
@apiCallChecker
def exportResults(self, export_format, export_path):
""" export mapping scheme leaves as CSV """
self.ui.statusbar.showMessage(get_ui_string("app.status.exposure.exported"))
# invoke asynchronously
self.project.set_export(export_format, export_path)
invoke_async(get_ui_string("app.status.processing"), self.project.export_data)
self.ui.statusbar.showMessage(get_ui_string("app.status.exposure.exported"))
@apiCallChecker
def buildExposure(self):
""" build exposure """
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.processing"))
# verify current dataset to make sure can process exposure
self.project.verify_data()
# can not proceed if project is not ready for exposure
if self.project.status != ProjectStatus.ReadyForExposure:
logUICall.log(get_ui_string("project.error.NotEnoughData"), logUICall.WARNING)
# show result
self.tab_datainput.showVerificationResults()
self.ui.mainTabs.setCurrentIndex(self.TAB_DATA)
return
# close current results
self.tab_result.closeResult()
self.ui.mainTabs.setTabEnabled(self.TAB_RESULT, True)
# reset progress dialog
self.progress.setVisible(True)
self.progress.ui.pb_progress.setRange(0, self.project.build_exposure_total_steps())
self.progress.ui.txt_progress.clear()
self.progress.ui.txt_progress.appendPlainText(get_ui_string("app.status.processing"))
self.qtapp.processEvents()
cancelled = False
error_occured = False
error_message = ""
curStep = 0
try:
for step in self.project.build_exposure_steps():
if cancelled or error_occured:
break
# use introspection to get operator class
class_name = str(step.__class__)
# result of above call has format
# <class '...'> where ... is the class name of interest
class_name = class_name[class_name.find("'")+1:class_name.rfind("'")]
# update UI
logAPICall.log('\t %s' % step.name, logAPICall.DEBUG)
self.progress.ui.txt_progress.appendPlainText(get_ui_string('message.%s'% class_name))
self.progress.ui.pb_progress.setValue(curStep)
self.qtapp.processEvents()
sleep(0.5)
# perform operation
step.do_operation()
if not self.progress.isVisible():
cancelled = True
# operation successful
curStep+=1
except Exception as err:
# exception are thrown if data is not ready for exposure
error_message = err.message
error_occured = True
self.progress.setVisible(False)
if error_occured:
# processing cancelled
logUICall.log(error_message, logUICall.WARNING)
self.ui.statusbar.showMessage(get_ui_string("app.status.cancelled"))
elif cancelled:
# processing cancelled
logUICall.log(get_ui_string("app.status.cancelled"), logUICall.WARNING)
self.ui.statusbar.showMessage(get_ui_string("app.status.cancelled"))
else:
# processing completed
self.project.verify_result()
self.progress.setVisible(False)
# show result
self.tab_result.refreshResult()
self.ui.mainTabs.setTabEnabled(self.TAB_RESULT, True)
self.ui.mainTabs.setCurrentIndex(self.TAB_RESULT)
self.ui.statusbar.showMessage(get_ui_string("app.status.exposure.created"))
def showTab(self, index):
""" switch view to tab with given index. do nothing if index is not valid """
if index >=self.TAB_DATA and index <=self.TAB_RESULT:
self.ui.mainTabs.setCurrentIndex(index)
def refreshPreview(self):
""" refresh all layers shown in Preview tab """
if self.previewInput:
self.tab_result.refreshView()
def visualizeMappingScheme(self, ms):
""" display the given mapping scheme in Mapping scheme and Modifier tabs"""
self.tab_ms.showMappingScheme(ms)
self.tab_mod.showMappingScheme(ms)
def updateMapLocation(self, x, y):
self.lb_map_location.setText("Longitude %.4f latitude %4f" % (x, y))
# utility methods
# no error checking is performed in these functions
# caller must catch possible exception
###############################
def setRange(self, ranges, attribute):
if ranges.has_key(attribute):
range = ranges[attribute]
self.dlgAttrRange.set_values(attribute, range['min_values'], range['max_values'])
else:
self.dlgAttrRange.set_values(attribute, [], [])
range_updated = self.dlgAttrRange.exec_() == QDialog.Accepted
if range_updated:
ranges[attribute] = {'min_values':self.dlgAttrRange.min_values,
'max_values':self.dlgAttrRange.max_values}
return range_updated
def getOpenFileName(self, parent, title, extension, callback):
""" show open file dialog box to get a filename """
filename = QFileDialog.getOpenFileName(parent, title, self.getLastOpenDir(), extension)
if not filename.isNull():
filename = str(filename)
if os.path.exists(filename):
# store directory to file, so next Open will be in same dir
self.saveLastOpenDir(filename[0:filename.rfind("/")])
callback(filename) # no error catching to make sure callback is actually a function
def saveLastOpenDir(self, dir_path):
""" store path so it can be retrieved by other parts of the application """
self.settings.setValue('LAST_OPEN_DIR', dir_path)
def getLastOpenDir(self):
""" retrieve remembered path """
last_dir = self.settings.value('LAST_OPEN_DIR').toString()
if last_dir is None:
return get_app_dir()
else:
return str(last_dir)
class AppMainWindow(Ui_mainWindow, QMainWindow):
"""
Main application window
"""
# internal decorator to perform common checks required
# for many calls
#############################
class CallChecker(object):
def __init__(self):
pass
def setWindow(self, main_window):
self.main_window = main_window
def __call__(self, f):
@functools.wraps(f)
def wrapper(*args, **kw):
self.main_window.setEnabled(False)
try:
logUICall.log(
'function call %s from module %s' %
(f.__name__, f.__module__), logUICall.DEBUG)
return f(*args, **kw)
except SIDDUIException as uie:
logUICall.log(uie, logUICall.WARNING)
self.main_window.ui.statusbar.showMessage(
get_ui_string('app.error.ui'))
except SIDDException as se:
logUICall.log(se, logUICall.WARNING)
self.main_window.ui.statusbar.showMessage(
get_ui_string('app.error.model'))
except Exception as e:
logUICall.log(e, logUICall.ERROR)
self.main_window.ui.statusbar.showMessage(
get_ui_string('app.error.unexpected'))
finally:
self.main_window.setEnabled(True)
return wrapper
apiCallChecker = CallChecker()
# CONSTANTS
#############################
UI_WINDOW_GEOM = 'app_main/geometry'
UI_WINDOW_STATE = 'app_main/windowState'
TAB_DATA, TAB_MS, TAB_MOD, TAB_RESULT = range(4)
# constructor / destructor
#############################
def __init__(self, qtapp, app_config):
"""
constructor
- initialize UI elements
- connect UI elements to callback
"""
# create UI
super(AppMainWindow, self).__init__()
AppMainWindow.apiCallChecker.setWindow(self)
self.qtapp = qtapp
self.app_config = app_config
self.taxonomy = get_taxonomy(
app_config.get('options', 'taxonomy', 'gem'))
self.ui = Ui_mainWindow()
self.ui.setupUi(self)
self.settings = QSettings(SIDD_COMPANY,
'%s %s' % (SIDD_APP_NAME, SIDD_VERSION))
self.restoreGeometry(
self.settings.value(self.UI_WINDOW_GEOM).toByteArray())
self.restoreState(
self.settings.value(self.UI_WINDOW_STATE).toByteArray())
self.lb_map_location = QLabel(self)
self.lb_map_location.resize(self.ui.statusbar.width() / 3,
self.ui.statusbar.height())
self.ui.statusbar.addPermanentWidget(self.lb_map_location)
self.msdb_dao = MSDatabaseDAO(FILE_MS_DB)
self.tab_datainput = WidgetDataInput(self)
self.ui.mainTabs.addTab(self.tab_datainput,
get_ui_string("app.window.tab.input"))
self.tab_ms = WidgetMappingSchemes(self)
self.ui.mainTabs.addTab(self.tab_ms,
get_ui_string("app.window.tab.ms"))
self.tab_mod = WidgetSecondaryModifier(self)
self.ui.mainTabs.addTab(self.tab_mod,
get_ui_string("app.window.tab.mod"))
self.tab_result = WidgetResult(self)
self.ui.mainTabs.addTab(self.tab_result,
get_ui_string("app.window.tab.result"))
self.previewInput = True
self.about = DialogAbout(self)
self.about.setModal(True)
self.dlgAttrRange = DialogAttrRanges()
self.dlgAttrRange.setModal(True)
self.progress = DialogApply(self)
self.progress.setModal(True)
self.proc_options = DialogProcessingOptions(self)
self.proc_options.setModal(True)
# connect menu action to slots (ui events)
self.ui.mainTabs.currentChanged.connect(self.tabChanged)
self.ui.actionProject_Blank.triggered.connect(self.createBlank)
self.ui.actionUsing_Data_Wizard.triggered.connect(self.createWizard)
self.ui.actionOpen_Existing.triggered.connect(self.loadProj)
self.ui.actionSave.triggered.connect(self.saveProj)
self.ui.actionSave_as.triggered.connect(self.saveProjAs)
self.ui.actionExit.triggered.connect(self.close)
self.ui.actionData_Input.triggered.connect(self.changeTab)
self.ui.actionMapping_Schemes.triggered.connect(self.changeTab)
self.ui.actionResult.triggered.connect(self.changeTab)
self.ui.actionProcessing_Options.triggered.connect(
self.setProcessingOptions)
self.ui.actionAbout.triggered.connect(self.showAbout)
# set project to None and adjust ui as needed
self.closeProject()
self.ui.statusbar.showMessage(get_ui_string("app.status.ready"))
# perform clean up from previous runs
try:
delete_folders_in_dir(get_temp_dir(), "tmp*")
except:
# cleanup is not-critical. no action taken even if fails
pass
# hide features
if not app_config.get('options', 'parse_modifier', True, bool):
self.tab_mod.setVisible(False)
self.ui.mainTabs.removeTab(self.TAB_MOD)
self.TAB_MOD = self.TAB_MS
self.TAB_RESULT -= 1
# hide view menu
self.ui.menuView.menuAction().setVisible(False)
# hide data wizard
self.ui.actionUsing_Data_Wizard.setVisible(False)
# event handlers
#############################
@pyqtSlot(QCloseEvent)
def resizeEvent(self, event):
""" handle window resize """
self.ui.mainTabs.resize(self.width(), self.height() - 40)
@pyqtSlot(QCloseEvent)
def closeEvent(self, event):
self.closeProject()
self.settings.setValue(self.UI_WINDOW_GEOM, self.saveGeometry())
self.settings.setValue(self.UI_WINDOW_STATE, self.saveState())
self.msdb_dao.close()
super(AppMainWindow, self).closeEvent(event)
@logUICall
@pyqtSlot()
def createBlank(self):
""" create a new project """
# create new project file
project = Project(self.app_config, self.taxonomy)
# open project and sync UI
self.setProject(project, skipVerify=True)
self.ui.statusbar.showMessage(
get_ui_string("app.status.project.created"))
@logUICall
@pyqtSlot()
def createWizard(self):
try:
# should not update preview while using wizard
self.setVisible(False)
self.previewInput = False
wizard = WidgetDataWizard(self,
Project(self.app_config, self.taxonomy))
if wizard.exec_() == QDialog.Accepted:
# setProject makes call to GIS component that requires visibility
self.setVisible(True)
self.previewInput = True
self.setProject(wizard.project)
self.ui.statusbar.showMessage(
get_ui_string("app.status.project.created"))
# else
# do nothing?
except:
pass
finally:
# return to normal window
# these calls are reached
# 1. in case any exception occurs,
# 2. wizard finished or cancelled
self.setVisible(True)
self.previewInput = True
@logUICall
@pyqtSlot()
def loadProj(self):
""" open file dialog to load an existing application """
self.getOpenFileName(self,
get_ui_string("app.window.msg.project.open"),
get_ui_string("app.extension.db"),
self.openProjectFile)
self.ui.statusbar.showMessage(
get_ui_string("app.status.project.loaded"))
@logUICall
@pyqtSlot()
def saveProj(self):
""" save active project """
if self.project is None:
return
try:
self.project.sync(SyncModes.Write)
self.ui.statusbar.showMessage(
get_ui_string("app.status.project.saved"))
except SIDDProjectException as se:
if se.error == ProjectErrors.FileNotSet:
self.saveProjAs()
@logUICall
@pyqtSlot()
def saveProjAs(self):
if self.project is None:
return
filename = QFileDialog.getSaveFileName(
self, get_ui_string("app.window.msg.project.create"),
get_app_dir(), get_ui_string("app.extension.db"))
# no need to check for file overwrite, because QFileDialog return always confirmed overwrite
if not filename.isNull():
filename = str(filename)
self.project.set_project_path(filename)
self.project.sync(SyncModes.Write)
self.saveLastOpenDir(filename[0:filename.rfind("/")])
self.ui.statusbar.showMessage(
get_ui_string("app.status.project.saved"))
@logUICall
@pyqtSlot()
def setProcessingOptions(self):
if self.project is None:
return
# set options to be those defined in project
self.proc_options.resetOptions()
for attribute in dir(self.proc_options):
try:
proc_attribute = self.project.operator_options['proc.%s' %
attribute]
setattr(self.proc_options, attribute, proc_attribute)
except:
# for empty project, this is the first time proc.options is set
# just use default from proc_option dialogbox
pass
if self.proc_options.exec_() == QDialog.Accepted:
for attribute in dir(self.proc_options):
self.project.operator_options['proc.%s' % attribute] = getattr(
self.proc_options, attribute)
# alert user
answer = QMessageBox.question(
self,
get_ui_string("app.confirm.title"),
get_ui_string("app.confirm.build.exposure"),
buttons=QMessageBox.No | QMessageBox.Yes,
defaultButton=QMessageBox.No)
if answer == QMessageBox.No:
return
self.buildExposure()
@logUICall
@pyqtSlot()
def showAbout(self):
"""
event handler for menu item
show about box
"""
self.about.setVisible(True)
@logUICall
@pyqtSlot()
def changeTab(self):
"""
event handler for menu item in menu
- switch view to tab according to menu item pushed
"""
sender = self.sender()
if sender == self.ui.actionData_Input:
self.showTab(self.TAB_DATA)
elif sender == self.ui.actionMapping_Schemes:
self.showTab(self.TAB_MS)
elif sender == self.ui.actionResult:
self.showTab(self.TAB_RESULT)
else:
logUICall.log('\tdo nothing. should not even be here',
logUICall.WARNING)
@logUICall
@pyqtSlot(int)
def tabChanged(self, index):
if index == self.TAB_RESULT:
self.lb_map_location.setVisible(True)
else:
self.lb_map_location.setVisible(False)
# public methods
#############################
@apiCallChecker
def openProjectFile(self, path_to_file):
"""
load project from given path
shows error if path does not exist
"""
# NOTE: set_project_path will create new project if path_to_file
# does not exist, os.path.exists check is not optional
if os.path.exists(path_to_file):
# read file to create project
project = Project(self.app_config, self.taxonomy)
project.set_project_path(path_to_file)
project.sync(SyncModes.Read)
# open project and sync UI
self.setProject(project)
@apiCallChecker
def setProject(self, project, skipVerify=False):
""" open a project and sync UI accordingly"""
# close and reset UI
self.closeProject()
self.project = project
# sync ui
self.tab_datainput.setProject(project)
# set processing options
for attribute in dir(self.proc_options):
if self.project.operator_options.has_key('proc.%s' % attribute):
setattr(self.proc_options, attribute,
self.project.operator_options['proc.%s' % attribute])
if not skipVerify:
# verify to make sure input file are still in same place
self.verifyInputs()
if self.project.ms is not None:
self.visualizeMappingScheme(self.project.ms)
self.ui.mainTabs.setTabEnabled(self.TAB_MS, True)
self.ui.mainTabs.setTabEnabled(self.TAB_MOD, True)
self.ui.mainTabs.setTabEnabled(self.TAB_DATA, True)
self.ui.mainTabs.setTabEnabled(self.TAB_RESULT, True)
self.ui.actionSave.setEnabled(True)
self.ui.actionSave_as.setEnabled(True)
self.tab_result.set_project(project)
@apiCallChecker
def closeProject(self):
""" close opened project and update UI elements accordingly """
# adjust UI in application window
self.tab_result.closeAll() # this call must happen first.
# otherwise, it locks temporary GIS files
self.ui.mainTabs.setTabEnabled(self.TAB_DATA, False)
self.ui.mainTabs.setTabEnabled(self.TAB_MS, False)
self.ui.mainTabs.setTabEnabled(self.TAB_MOD, False)
self.ui.mainTabs.setTabEnabled(self.TAB_RESULT, False)
self.showTab(self.TAB_DATA)
# disable menu/menu items
self.ui.actionSave.setEnabled(False)
self.ui.actionSave_as.setEnabled(False)
self.ui.actionMapping_Schemes.setEnabled(False)
self.ui.actionResult.setEnabled(False)
self.ui.actionProcessing_Options.setEnabled(False)
if getattr(self, 'project', None) is not None:
# save existing project is needed
if self.project.require_save:
ans = QMessageBox.question(
self,
get_ui_string("app.window.msg.project.not_saved"),
get_ui_string("app.window.msg.project.save_or_not"),
buttons=QMessageBox.Yes | QMessageBox.No,
defaultButton=QMessageBox.Yes)
if ans == QMessageBox.Yes:
self.saveProj()
# adjust UI in tabs
self.tab_datainput.closeProject()
self.tab_ms.clearMappingScheme()
self.tab_mod.closeMappingScheme()
self.project.clean_up()
del self.project
self.project = None
@apiCallChecker
def verifyInputs(self):
""" perform checks on current dataset provided and update UI accordingly """
# remove result
self.tab_result.closeResult()
# verify current dataset
self.ui.statusbar.showMessage(
get_ui_string("app.status.ms.processing"))
# invoke asynchronously
invoke_async(get_ui_string("app.status.processing"),
self.project.verify_data)
self.tab_datainput.showVerificationResults()
# always allow mapping scheme
self.ui.mainTabs.setTabEnabled(self.TAB_MS, True)
self.ui.mainTabs.setTabEnabled(self.TAB_MOD, True)
self.ui.actionMapping_Schemes.setEnabled(True)
self.ui.actionResult.setEnabled(True)
self.ui.actionProcessing_Options.setEnabled(True)
self.ui.statusbar.showMessage(
get_ui_string("app.status.input.verified"))
@apiCallChecker
def buildMappingScheme(self):
""" build mapping scheme with given data """
self.ui.statusbar.showMessage(
get_ui_string("app.status.ms.processing"))
# invoke asynchronously
try:
invoke_async(get_ui_string("app.status.processing"),
self.project.build_ms)
except SIDDException as err:
# different error message used in this case
raise SIDDUIException(
get_ui_string('project.error.sampling', str(err)))
self.visualizeMappingScheme(self.project.ms)
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.created"))
@apiCallChecker
def createEmptyMS(self):
""" build an empty mapping scheme tree for user to manipulate manually """
self.ui.statusbar.showMessage(
get_ui_string("app.status.ms.processing"))
# invoke asynchronously
invoke_async(get_ui_string("app.status.processing"),
self.project.create_empty_ms)
self.visualizeMappingScheme(self.project.ms)
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.created"))
@apiCallChecker
def appendMSBranch(self, node, branch):
""" append a branch (from library) to a node in a mapping scheme tree """
self.ui.statusbar.showMessage(
get_ui_string("app.status.ms.processing"))
self.project.ms.append_branch(node, branch)
self.visualizeMappingScheme(self.project.ms)
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.modified"))
@apiCallChecker
def deleteMSBranch(self, node):
""" delete selected node and children from mapping scheme tree """
self.ui.statusbar.showMessage(
get_ui_string("app.status.ms.processing"))
self.project.ms.delete_branch(node)
self.visualizeMappingScheme(self.project.ms)
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.modified"))
@apiCallChecker
def exportMS(self, path, format):
""" export mapping scheme leaves as CSV """
self.ui.statusbar.showMessage(
get_ui_string("app.status.ms.processing"))
# invoke asynchronously
invoke_async(get_ui_string("app.status.processing"),
self.project.export_ms, path, format)
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.exported"))
@apiCallChecker
def loadMS(self, path):
self.ui.statusbar.showMessage(
get_ui_string("app.status.ms.processing"))
# invoke asynchronously
invoke_async(get_ui_string("app.status.processing"),
self.project.load_ms, path)
self.visualizeMappingScheme(self.project.ms)
self.ui.statusbar.showMessage(get_ui_string("app.status.ms.created"))
@apiCallChecker
def exportResults(self, export_format, export_path):
""" export mapping scheme leaves as CSV """
self.ui.statusbar.showMessage(
get_ui_string("app.status.exposure.exported"))
# invoke asynchronously
self.project.set_export(export_format, export_path)
invoke_async(get_ui_string("app.status.processing"),
self.project.export_data)
self.ui.statusbar.showMessage(
get_ui_string("app.status.exposure.exported"))
@apiCallChecker
def buildExposure(self):
""" build exposure """
self.ui.statusbar.showMessage(
get_ui_string("app.status.ms.processing"))
# verify current dataset to make sure can process exposure
self.project.verify_data()
# can not proceed if project is not ready for exposure
if self.project.status != ProjectStatus.ReadyForExposure:
logUICall.log(get_ui_string("project.error.NotEnoughData"),
logUICall.WARNING)
# show result
self.tab_datainput.showVerificationResults()
self.ui.mainTabs.setCurrentIndex(self.TAB_DATA)
return
# close current results
self.tab_result.closeResult()
self.ui.mainTabs.setTabEnabled(self.TAB_RESULT, True)
# reset progress dialog
self.progress.setVisible(True)
self.progress.ui.pb_progress.setRange(
0, self.project.build_exposure_total_steps())
self.progress.ui.txt_progress.clear()
self.progress.ui.txt_progress.appendPlainText(
get_ui_string("app.status.processing"))
self.qtapp.processEvents()
cancelled = False
error_occured = False
error_message = ""
curStep = 0
try:
for step in self.project.build_exposure_steps():
if cancelled or error_occured:
break
# use introspection to get operator class
class_name = str(step.__class__)
# result of above call has format
# <class '...'> where ... is the class name of interest
class_name = class_name[class_name.find("'") +
1:class_name.rfind("'")]
# update UI
logAPICall.log('\t %s' % step.name, logAPICall.DEBUG)
self.progress.ui.txt_progress.appendPlainText(
get_ui_string('message.%s' % class_name))
self.progress.ui.pb_progress.setValue(curStep)
self.qtapp.processEvents()
sleep(0.5)
# perform operation
step.do_operation()
if not self.progress.isVisible():
cancelled = True
# operation successful
curStep += 1
except Exception as err:
# exception are thrown if data is not ready for exposure
error_message = err.message
error_occured = True
self.progress.setVisible(False)
if error_occured:
# processing cancelled
logUICall.log(error_message, logUICall.WARNING)
self.ui.statusbar.showMessage(
get_ui_string("app.status.cancelled"))
elif cancelled:
# processing cancelled
logUICall.log(get_ui_string("app.status.cancelled"),
logUICall.WARNING)
self.ui.statusbar.showMessage(
get_ui_string("app.status.cancelled"))
else:
# processing completed
self.project.verify_result()
self.progress.setVisible(False)
# show result
self.tab_result.refreshResult()
self.ui.mainTabs.setTabEnabled(self.TAB_RESULT, True)
self.ui.mainTabs.setCurrentIndex(self.TAB_RESULT)
self.ui.statusbar.showMessage(
get_ui_string("app.status.exposure.created"))
def showTab(self, index):
""" switch view to tab with given index. do nothing if index is not valid """
if index >= self.TAB_DATA and index <= self.TAB_RESULT:
self.ui.mainTabs.setCurrentIndex(index)
def refreshPreview(self):
""" refresh all layers shown in Preview tab """
if self.previewInput:
self.tab_result.refreshView()
def visualizeMappingScheme(self, ms):
""" display the given mapping scheme in Mapping scheme and Modifier tabs"""
self.tab_ms.showMappingScheme(ms)
self.tab_mod.showMappingScheme(ms)
def updateMapLocation(self, x, y):
self.lb_map_location.setText("Longitude %.4f latitude %4f" % (x, y))
# utility methods
# no error checking is performed in these functions
# caller must catch possible exception
###############################
def setRange(self, ranges, attribute):
if ranges.has_key(attribute):
range = ranges[attribute]
self.dlgAttrRange.set_values(attribute, range['min_values'],
range['max_values'])
else:
self.dlgAttrRange.set_values(attribute, [], [])
range_updated = self.dlgAttrRange.exec_() == QDialog.Accepted
if range_updated:
ranges[attribute] = {
'min_values': self.dlgAttrRange.min_values,
'max_values': self.dlgAttrRange.max_values
}
return range_updated
def getOpenFileName(self, parent, title, extension, callback):
""" show open file dialog box to get a filename """
filename = QFileDialog.getOpenFileName(parent, title,
self.getLastOpenDir(),
extension)
if not filename.isNull():
filename = str(filename)
if os.path.exists(filename):
# store directory to file, so next Open will be in same dir
self.saveLastOpenDir(filename[0:filename.rfind("/")])
callback(
filename
) # no error catching to make sure callback is actually a function
def saveLastOpenDir(self, dir_path):
""" store path so it can be retrieved by other parts of the application """
self.settings.setValue('LAST_OPEN_DIR', dir_path)
def getLastOpenDir(self):
""" retrieve remembered path """
last_dir = self.settings.value('LAST_OPEN_DIR').toString()
if last_dir is None:
return get_app_dir()
else:
return str(last_dir)