[processing] Fix multiple error dialogs in batch processes

Errors when postprocessing layers are now added to the log console

python/plugins/processing/gui/AlgorithmDialogBase.py

@@ -85,6 +85,7 @@ class AlgorithmDialogBase(BASE, WIDGET):
         self.showDebug = ProcessingConfig.getSetting(
             ProcessingConfig.SHOW_DEBUG_IN_DIALOG)
 
+
     def closeEvent(self, evt):
         self.settings.setValue("/Processing/dialogBase", self.saveGeometry())
 
@@ -107,7 +108,7 @@ class AlgorithmDialogBase(BASE, WIDGET):
 
     def setInfo(self, msg, error=False):
         if error:
-            self.txtLog.append('<span style="color:red">%s</span>' % msg)
+            self.txtLog.append('<span style="color:red"><br>%s<br></span>' % msg)
         else:
             self.txtLog.append(msg)
         QCoreApplication.processEvents()

python/plugins/processing/gui/MessageBarProgress.py

@@ -17,6 +17,7 @@
 ***************************************************************************
 """
 
+
 __author__ = 'Victor Olaya'
 __date__ = 'April 2013'
 __copyright__ = '(C) 2013, Victor Olaya'
@@ -29,11 +30,13 @@ from PyQt4.QtCore import Qt, QCoreApplication
 from PyQt4.QtGui import QProgressBar
 from qgis.utils import iface
 from qgis.gui import QgsMessageBar
-
+from processing.core.ProcessingLog import ProcessingLog
+from processing.gui.MessageDialog import MessageDialog
 
 class MessageBarProgress:
 
     def __init__(self, algname=None):
+        self.msg = []
         self.progressMessageBar = \
             iface.messageBar().createMessage(self.tr('Executing algorithm <i>{0}</i>'.format(algname if algname else '')))
         self.progress = QProgressBar()
@@ -44,9 +47,8 @@ class MessageBarProgress:
                                       iface.messageBar().INFO)
 
     def error(self, msg):
-        iface.messageBar().clearWidgets()
-        iface.messageBar().pushMessage(self.tr('Error'),
-                                       msg, level=QgsMessageBar.CRITICAL, duration=3)
+        self.msg.append(msg)
+
 
     def setText(self, text):
         pass
@@ -67,6 +69,11 @@ class MessageBarProgress:
         pass
 
     def close(self):
+        if self.msg:
+            dlg = MessageDialog()
+            dlg.setTitle(QCoreApplication.translate('MessageBarProgress', 'Problem executing algorithm'))
+            dlg.setMessage("<br>".join(self.msg))
+            dlg.exec_()
         iface.messageBar().clearWidgets()
 
     def tr(self, string, context=''):

python/plugins/processing/gui/Postprocessing.py

@@ -77,18 +77,16 @@ def handleAlgorithmResults(alg, progress=None, showResults=True):
             ProcessingResults.addResult(out.description, out.value)
             htmlResults = True
         i += 1
+
+    QApplication.restoreOverrideCursor()
     if wrongLayers:
-        QApplication.restoreOverrideCursor()
-        dlg = MessageDialog()
-        dlg.setTitle(QCoreApplication.translate('Postprocessing', 'Problem loading output layers'))
         msg = "The following layers were not correctly generated.<ul>"
         msg += "".join(["<li>%s</li>" % lay for lay in wrongLayers]) + "</ul>"
-        msg += "You can check the <a href='log'>log messages</a> to find more information about the execution of the algorithm"
-        dlg.setMessage(msg)
-        dlg.exec_()
+        msg += "You can check the log messages to find more information about the execution of the algorithm"
+        progress.error(msg)
+
 
     if showResults and htmlResults and not wrongLayers:
-        QApplication.restoreOverrideCursor()
         dlg = ResultsDialog()
         dlg.exec_()