When processing tasks are clicked in task manager, reopen the

algorithm dialog

python/plugins/processing/gui/AlgorithmDialog.py

@@ -64,6 +64,7 @@ class AlgorithmDialog(QgsProcessingAlgorithmDialogBase):
     def __init__(self, alg):
         super().__init__()
         self.feedback_dialog = None
+        self.task = None
 
         self.setAlgorithm(alg)
         self.setMainWidget(self.getParametersPanel(alg, self))
@@ -71,6 +72,7 @@ class AlgorithmDialog(QgsProcessingAlgorithmDialogBase):
         self.runAsBatchButton = QPushButton(QCoreApplication.translate("AlgorithmDialog", "Run as Batch Process…"))
         self.runAsBatchButton.clicked.connect(self.runAsBatch)
         self.buttonBox().addButton(self.runAsBatchButton, QDialogButtonBox.ResetRole) # reset role to ensure left alignment
+        QgsApplication.taskManager().triggered.connect(self.taskTriggered)
 
     def getParametersPanel(self, alg, parent):
         return ParametersPanel(parent, alg)
@@ -233,6 +235,7 @@ class AlgorithmDialog(QgsProcessingAlgorithmDialogBase):
                 self.cancelButton().setEnabled(self.algorithm().flags() & QgsProcessingAlgorithm.FlagCanCancel)
 
                 def on_complete(ok, results):
+                    self.task = None
                     if ok:
                         feedback.pushInfo(self.tr('Execution completed in {0:0.2f} seconds'.format(time.time() - start_time)))
                         feedback.pushInfo(self.tr('Results:'))
@@ -255,9 +258,9 @@ class AlgorithmDialog(QgsProcessingAlgorithmDialogBase):
                     # Make sure the Log tab is visible before executing the algorithm
                     self.showLog()
 
-                    task = QgsProcessingAlgRunnerTask(self.algorithm(), parameters, context, feedback)
-                    task.executed.connect(on_complete)
-                    QgsApplication.taskManager().addTask(task)
+                    self.task = QgsProcessingAlgRunnerTask(self.algorithm(), parameters, context, feedback)
+                    self.task.executed.connect(on_complete)
+                    QgsApplication.taskManager().addTask(self.task)
                 else:
                     self.feedback_dialog = self.createProgressDialog()
                     self.feedback_dialog.show()
@@ -277,6 +280,13 @@ class AlgorithmDialog(QgsProcessingAlgorithmDialogBase):
             self.messageBar().pushMessage("", self.tr("Wrong or missing parameter value: {0}").format(e.parameter.description()),
                                           level=QgsMessageBar.WARNING, duration=5)
 
+    def taskTriggered(self, task):
+        if task == self.task:
+            self.show()
+            self.raise_()
+            self.setWindowState(self.windowState() & ~Qt.WindowMinimized | Qt.WindowActive)
+            self.activateWindow()
+
     def finish(self, successful, result, context, feedback):
         keepOpen = not successful or ProcessingConfig.getSetting(ProcessingConfig.KEEP_DIALOG_OPEN)
 

python/plugins/processing/gui/AlgorithmLocatorFilter.py

@@ -88,9 +88,6 @@ class AlgorithmLocatorFilter(QgsLocatorFilter):
             prevMapTool = canvas.mapTool()
             dlg.show()
             dlg.exec_()
-            # have to manually delete the dialog - otherwise it's owned by the
-            # iface mainWindow and never deleted
-            dlg.deleteLater()
             if canvas.mapTool() != prevMapTool:
                 try:
                     canvas.mapTool().reset()

python/plugins/processing/gui/ProcessingToolbox.py

@@ -300,7 +300,7 @@ class ProcessingToolbox(BASE, WIDGET):
                         self.addRecentAlgorithms(True)
                 # have to manually delete the dialog - otherwise it's owned by the
                 # iface mainWindow and never deleted
-                dlg.deleteLater()
+                # dlg.deleteLater()
             else:
                 feedback = MessageBarProgress()
                 context = dataobjects.createContext(feedback)

python/plugins/processing/tools/general.py

@@ -154,7 +154,4 @@ def execAlgorithmDialog(algOrName, parameters={}):
         canvas.setMapTool(prevMapTool)
 
     results = dlg.results()
-    # have to manually delete the dialog - otherwise it's owned by the
-    # iface mainWindow and never deleted
-    dlg.deleteLater()
     return results