forked from nextgis/qgis_metatools
/
workflow_editor_dialog.py
170 lines (138 loc) · 5.85 KB
/
workflow_editor_dialog.py
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# -*- coding: utf-8 -*-
#******************************************************************************
#
# Metatools
# ---------------------------------------------------------
# Metadata browser/editor
#
# Copyright (C) 2011 NextGIS (info@nextgis.ru)
#
# This source 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 code 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.
#
# A copy of the GNU General Public License is available on the World Wide Web
# at <http://www.gnu.org/copyleft/gpl.html>. You can also obtain it by writing
# to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
# MA 02111-1307, USA.
#
#******************************************************************************
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtXml import *
from PyQt4.QtXmlPatterns import *
from qgis.core import *
from qgis.gui import *
import os, sys
from workflow_template_manager import WorkflowTemplateManager, WorkflowTemplate
from ui_workflow_editor import Ui_WorkflowEditorDialog
currentPath = os.path.abspath(os.path.dirname(__file__))
class WorkflowEditorDialog(QDialog, Ui_WorkflowEditorDialog):
def __init__(self):
QDialog.__init__(self)
self.setupUi(self)
self.workflowTemplateManager = WorkflowTemplateManager(currentPath)
self.workflowTemplate = WorkflowTemplate()
self.btnSave = self.buttonBox.button(QDialogButtonBox.Save)
self.btnClose = self.buttonBox.button(QDialogButtonBox.Close)
self.btnNew.clicked.connect(self.newWorkflow)
self.btnRemove.clicked.connect(self.removeWorkflow)
self.leName.textEdited.connect(self.templateModified)
self.textDescription.textChanged.connect(self.templateModified)
self.cmbWorkflow.currentIndexChanged.connect(self.workflowChanged)
self.buttonBox.accepted.disconnect(self.accept)
self.btnSave.clicked.connect(self.saveTemplate)
self.manageGui()
def manageGui(self):
self.btnRemove.setEnabled(False)
self.reloadTemplatesList()
self.btnSave.setEnabled(False)
def reloadTemplatesList(self):
self.cmbWorkflow.clear()
self.cmbWorkflow.addItems(self.workflowTemplateManager.getTemplateList())
def newWorkflow(self):
if self.btnSave.isEnabled() and QMessageBox.question(None,
self.tr("Metatools"),
self.tr("Template contains unsaved data. Create new template without saving?"),
QMessageBox.Yes | QMessageBox.No) == QMessageBox.No:
return
self.clearFormFields()
self.workflowTemplate = WorkflowTemplate()
self.btnSave.setEnabled(False)
def removeWorkflow(self):
if self.workflowTemplate.name:
self.workflowTemplateManager.removeTemplate(self.workflowTemplate.name)
self.reloadTemplatesList()
if self.cmbWorkflow.count() == 0:
self.clearFormFields()
self.btnSave.setEnabled(False)
# enable save button when templated edited
def templateModified(self):
self.btnSave.setEnabled(True)
def workflowChanged(self):
templateName = self.cmbWorkflow.currentText()
if templateName == "":
self.workflowTemplate = WorkflowTemplate()
self.btnRemove.setEnabled(False)
return
self.workflowTemplate = self.workflowTemplateManager.loadTemplate(templateName)
self.templateToForm(self.workflowTemplate)
self.btnSave.setEnabled(False)
self.btnRemove.setEnabled(True)
def saveTemplate(self):
template = self.templateFromForm()
# check template attrs
if template.name is None or template.name == "":
QMessageBox.warning(self,
self.tr("Manage workflows"),
self.tr("The name of the workflow must be specified!")
)
return
# try save template
try:
# first delete old template
if self.workflowTemplate.name and self.workflowTemplate.name != "":
self.workflowTemplateManager.removeTemplate(self.workflowTemplate.name)
# save new version
self.workflowTemplateManager.saveTemplate(template)
except:
QMessageBox.warning(self,
self.tr("Manage workflows"),
self.tr("Template can't be saved: ") + unicode(sys.exc_info()[1])
)
return
# reload form
self.reloadTemplatesList()
# set combobox item
index = self.cmbWorkflow.findText(template.name)
if index != -1:
self.cmbWorkflow.setCurrentIndex(index)
self.btnSave.setEnabled(False)
def clearFormFields(self):
self.leName.clear()
self.textDescription.clear()
# populate form with template data
def templateToForm(self, template):
self.leName.setText(template.name or "")
self.textDescription.setPlainText(template.description or "")
# create template from entered values
def templateFromForm(self):
template = WorkflowTemplate()
template.name = self.leName.text()
template.description = self.textDescription.toPlainText()
return template
def reject(self):
if self.btnSave.isEnabled() and QMessageBox.question(None,
self.tr("Metatools"),
self.tr("Template contains unsaved data. Close the window without saving?"),
QMessageBox.Yes | QMessageBox.No) == QMessageBox.No:
return
QDialog.reject(self)
def accept(self):
QDialog.accept(self)