Add processing algorithms to locator bar

Inspired by the ghost of processing's commander

python/plugins/processing/ProcessingPlugin.py

@@ -42,6 +42,7 @@ from processing.gui.ProcessingToolbox import ProcessingToolbox
 from processing.gui.HistoryDialog import HistoryDialog
 from processing.gui.ConfigDialog import ConfigOptionsPage
 from processing.gui.ResultsDock import ResultsDock
+from processing.gui.AlgorithmLocatorFilter import AlgorithmLocatorFilter
 from processing.modeler.ModelerDialog import ModelerDialog
 from processing.tools.system import tempFolder
 from processing.gui.menus import removeMenus, initializeMenus, createMenus
@@ -71,6 +72,8 @@ class ProcessingPlugin(object):
         self.options_factory = ProcessingOptionsFactory()
         self.options_factory.setTitle(self.tr('Processing'))
         iface.registerOptionsWidgetFactory(self.options_factory)
+        self.locator_filter = AlgorithmLocatorFilter()
+        iface.registerLocatorFilter(self.locator_filter)
         Processing.initialize()
 
     def initGui(self):
@@ -149,6 +152,7 @@ class ProcessingPlugin(object):
         self.iface.unregisterMainWindowAction(self.resultsAction)
 
         self.iface.unregisterOptionsWidgetFactory(self.options_factory)
+        self.iface.deregisterLocatorFilter(self.locator_filter)
 
         removeMenus()
         Processing.deinitialize()

python/plugins/processing/gui/AlgorithmLocatorFilter.py

@@ -0,0 +1,80 @@
+# -*- coding: utf-8 -*-
+
+"""
+***************************************************************************
+    AlgorithmLocatorFilter.py
+    -------------------------
+    Date                 : May 2017
+    Copyright            : (C) 2017 by Nyall Dawson
+    Email                : nyall dot dawson at gmail dot 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.                                   *
+*                                                                         *
+***************************************************************************
+"""
+
+__author__ = 'Nyall Dawson'
+__date__ = 'May 2017'
+__copyright__ = '(C) 2017, Nyall Dawson'
+
+# This will get replaced with a git SHA1 when you do a git archive
+
+__revision__ = '$Format:%H$'
+
+
+from qgis.core import (QgsApplication,
+                       QgsProcessingAlgorithm)
+from qgis.gui import (QgsLocatorFilter,
+                      QgsLocatorResult)
+from processing.gui.MessageDialog import MessageDialog
+from processing.gui.AlgorithmDialog import AlgorithmDialog
+from qgis.utils import iface
+
+class AlgorithmLocatorFilter(QgsLocatorFilter):
+
+    def __init__(self, parent=None):
+        super(AlgorithmLocatorFilter, self).__init__(parent)
+
+    def fetchResults(self,string,context,feedback):
+        for a in QgsApplication.processingRegistry().algorithms():
+            if feedback.isCanceled():
+                return
+            if a.flags() & QgsProcessingAlgorithm.FlagHideFromToolbox:
+                continue
+
+            if string.lower() in a.displayName().lower() or [t for t in a.tags() if string.lower() in t.lower()]:
+                result = QgsLocatorResult()
+                result.filter = self
+                result.displayString = a.displayName()
+                result.icon = a.icon()
+                result.userData = a.id()
+                self.resultFetched.emit(result)
+
+    def triggerResult(self, result):
+        a = QgsApplication.processingRegistry().algorithmById(result.userData)
+        if a:
+            alg = a.getCopy()
+            message = alg.checkBeforeOpeningParametersDialog()
+            if message:
+                dlg = MessageDialog()
+                dlg.setTitle(self.tr('Missing dependency'))
+                dlg.setMessage(message)
+                dlg.exec_()
+                return
+            dlg = alg.getCustomParametersDialog()
+            if not dlg:
+                dlg = AlgorithmDialog(alg)
+            canvas = iface.mapCanvas()
+            prevMapTool = canvas.mapTool()
+            dlg.show()
+            dlg.exec_()
+            if canvas.mapTool() != prevMapTool:
+                try:
+                    canvas.mapTool().reset()
+                except:
+                    pass
+                canvas.setMapTool(prevMapTool)