[processing] add "Save as" functionality to History dialog (fix #10086)

python/plugins/processing/core/ProcessingLog.py

@@ -134,6 +134,14 @@ class ProcessingLog:
         os.unlink(ProcessingLog.logFilename())
         ProcessingLog.startLogging()
 
+    @staticmethod
+    def saveLog(fileName):
+        entries = ProcessingLog.getLogEntries()
+        with codecs.open(fileName, 'w', encoding='utf-8') as f:
+            for k, v in entries.iteritems():
+                for entry in v:
+                    f.write('%s|%s|%s\n' % (k, entry.date, entry.text))
+
 
 class LogEntry:
 

python/plugins/processing/gui/HistoryDialog.py

@@ -51,9 +51,14 @@ class HistoryDialog(QDialog, Ui_DlgHistory):
         self.clearButton.setToolTip(self.tr('Clear history and log'))
         self.buttonBox.addButton(self.clearButton, QDialogButtonBox.ActionRole)
 
+        self.saveButton = QPushButton(self.tr('Save As...'))
+        self.saveButton.setToolTip(self.tr('Save history and log'))
+        self.buttonBox.addButton(self.saveButton, QDialogButtonBox.ActionRole)
+
         self.tree.doubleClicked.connect(self.executeAlgorithm)
         self.tree.currentItemChanged.connect(self.changeText)
         self.clearButton.clicked.connect(self.clearLog)
+        self.saveButton.clicked.connect(self.saveLog)
 
         self.tree.setContextMenuPolicy(Qt.CustomContextMenu)
         self.tree.customContextMenuRequested.connect(self.showPopupMenu)
@@ -70,6 +75,18 @@ class HistoryDialog(QDialog, Ui_DlgHistory):
             ProcessingLog.clearLog()
             self.fillTree()
 
+    def saveLog(self):
+        fileName = QFileDialog.getSaveFileName(self,
+            self.tr('Save file'), '.', 'Log files (*.log *.LOG)')
+
+        if fileName == '':
+            return
+
+        if not fileName.lower().endswith('.log'):
+            fileName += '.log'
+
+        ProcessingLog.saveLog(fileName)
+
     def fillTree(self):
         self.tree.clear()
         elements = ProcessingLog.getLogEntries()