forked from luipir/Processing-Workflow
/
ProcessingWorkflowPlugin.py
76 lines (65 loc) · 3.28 KB
/
ProcessingWorkflowPlugin.py
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"""
***************************************************************************
ProcessingWorkflowPlugin.py
-------------------------------------
Copyright (C) 2014 TIGER-NET (www.tiger-net.org)
***************************************************************************
* This plugin is part of the Water Observation Information System (WOIS) *
* developed under the TIGER-NET project funded by the European Space *
* Agency as part of the long-term TIGER initiative aiming at promoting *
* the use of Earth Observation (EO) for improved Integrated Water *
* Resources Management (IWRM) in Africa. *
* *
* WOIS is a free software i.e. 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 3 of the License, *
* or (at your option) any later version. *
* *
* WOIS 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. *
* *
* You should have received a copy of the GNU General Public License along *
* with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************
"""
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.core import *
import os, sys
import inspect
from processing.core.Processing import Processing
from processing_workflow.WorkflowProvider import WorkflowProvider
cmd_folder = os.path.split(inspect.getfile( inspect.currentframe() ))[0]
if cmd_folder not in sys.path:
sys.path.insert(0, cmd_folder)
class ProcessingWorkflowPlugin:
def __init__(self, iface):
self.provider = WorkflowProvider(iface)
# Save reference to the QGIS interface
self.iface = iface
def initGui(self):
self.algListener = WorkflowAlgListListner(self.provider)
Processing.addAlgListListener(self.algListener)
Processing.addProvider(self.provider, True)
def unload(self):
Processing.removeAlgListListener(self.algListener)
Processing.removeProvider(self.provider)
class WorkflowAlgListListner():
def __init__(self, workflowProvider):
self.workflowProvider = workflowProvider
self.recursiveCall = False
def algsListHasChanged(self):
if self.recursiveCall:
return
self.workflowProvider.createAlgsList()
algs = {}
for alg in self.workflowProvider.preloadedAlgs:
algs[alg.commandLineName()] = alg
Processing.algs[self.workflowProvider.getName()] = algs
# fireAlgsListHasChanged to update the Toolbox GUI but make sure that the
# call doesn't lead to infinite loop
self.recursiveCall = True
Processing.fireAlgsListHasChanged()
self.recursiveCall = False