[processing] Improved script editor dialog title

- show filename in title, or 'Untitled Script' for new
scripts
- show unsaved ('*') indicator when unsaved changes present

Author: nyalldawson

python/plugins/processing/script/ScriptEditorDialog.py

@@ -111,13 +111,27 @@ def __init__(self, filePath=None, parent=None):
         self.btnReplace.clicked.connect(self.replace)
         self.lastSearch = None
 
-        self.filePath = filePath
-        if self.filePath is not None:
-            self._loadFile(self.filePath)
+        self.filePath = None
+        if filePath is not None:
+            self._loadFile(filePath)
 
         self.needUpdate = False
         self.setHasChanged(False)
 
+    def update_dialog_title(self):
+        """
+        Updates the script editor dialog title
+        """
+        if self.filePath:
+            path, file_name = os.path.split(self.filePath)
+        else:
+            file_name = self.tr('Untitled Script')
+
+        if self.hasChanged:
+            file_name = '*' + file_name
+
+        self.setWindowTitle(self.tr('{} - Processing Script Editor').format(file_name))
+
     def closeEvent(self, event):
         settings = QgsSettings()
         settings.setValue("/Processing/stateScriptEditor", self.saveState())
@@ -165,7 +179,6 @@ def openScript(self):
 
         with OverrideCursor(Qt.WaitCursor):
             self._loadFile(fileName)
-            self.filePath = fileName
 
     def save(self):
         self.saveScript(False)
@@ -205,6 +218,7 @@ def saveScript(self, saveAs):
     def setHasChanged(self, hasChanged):
         self.hasChanged = hasChanged
         self.actionSaveScript.setEnabled(hasChanged)
+        self.update_dialog_title()
 
     def runAlgorithm(self):
         d = {}
@@ -275,3 +289,6 @@ def _loadFile(self, filePath):
         self.hasChanged = False
         self.editor.setModified(False)
         self.editor.recolor()
+
+        self.filePath = filePath
+        self.update_dialog_title()