new syntax highlighter, abortable sleep function

Joachim Beerwerth from the group of Prof. Roland Böhmer (TU Dortmund) provided a patch with follwing enhancements:

* new syntax highlighter: 
  * improves performance with longer scripts
  * search function (ctrl+f)
  * auto indent
  * undo/redo
* abortable sleep function in experiment scripts

debian/control

@@ -10,7 +10,7 @@ Package: python-damaris
 Architecture: all
 XB-Python-Version: ${python:Versions}
 Provides:  ${python:Provides}, damaris-frontend
-Depends: ${python:Depends}, python-numpy (>=1.0), python-scipy,  python-gtk2 (>=2.8.0), python-glade2, python-matplotlib (>=0.90), python-tables (>=1.3.2), lzop, python-xdg
+Depends: ${python:Depends}, python-numpy (>=1.0), python-scipy,  python-gtk2 (>=2.8.0), python-glade2, python-matplotlib (>=0.90), python-tables (>=1.3.2), lzop, python-xdg, python-gtksourceview2
 Recommends: damaris-backends, python-numpy-ext
 Suggests: python-doc, python-tables-doc, python-numpy-doc
 Description: python frontend for DAMARIS project

src/gui/DamarisGUI.py

@@ -34,6 +34,8 @@ import gtk.gdk
 gtk.gdk.threads_init( )
 import gtk.glade
 
+import gtksourceview2
+
 import pango
 import cairo
 
@@ -72,7 +74,7 @@ if hasattr( gtk, "PrintOperation" ):
 from damaris.gui import ExperimentWriter, ExperimentHandling
 from damaris.gui import ResultReader, ResultHandling
 from damaris.gui import BackendDriver
-from damaris.gui.gtkcodebuffer import CodeBuffer, SyntaxLoader
+#from damaris.gui.gtkcodebuffer import CodeBuffer, SyntaxLoader
 #from damaris.data import Drawable # this is a base class, it should be used...
 from damaris.data import DataPool, Accumulation, ADC_Result, MeasurementResult
 
@@ -243,7 +245,57 @@ class DamarisGUI:
         if self.state in [ DamarisGUI.Edit_State, DamarisGUI.Quit_State ]:
             self.state = DamarisGUI.Quit_State
             # do a cleanup...
-            print "ToDo: Cleanup, Save Dialogs ..."
+            
+            if self.sw.experiment_script_textbuffer.get_modified( ):
+                question = gtk.MessageDialog(parent=self.xml_gui.get_widget( "main_window"),
+                                             type=gtk.MESSAGE_WARNING,
+                                             flags=gtk.DIALOG_MODAL,
+                                             buttons=gtk.BUTTONS_NONE)
+                question.add_button(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL)
+                question.add_button(gtk.STOCK_NO, gtk.RESPONSE_NO)
+                question.add_button(gtk.STOCK_YES, gtk.RESPONSE_YES)
+                question.set_markup("The Experiment Script has been changed. Save changes?")
+
+                response = question.run()
+                question.destroy()
+                
+                if response == gtk.RESPONSE_CANCEL:
+                    return True
+                elif response == gtk.RESPONSE_YES:
+                    current_page = self.main_notebook.get_current_page( )
+                    self.main_notebook.set_current_page(0)
+                    if self.sw.exp_script_filename is None:
+                        self.sw.save_file_as()
+                    else:
+                        self.sw.save_file()
+                    self.main_notebook.set_current_page(current_page)
+            
+            if self.sw.data_handling_textbuffer.get_modified( ):
+                question = gtk.MessageDialog(parent=self.xml_gui.get_widget( "main_window"),
+                                             type=gtk.MESSAGE_WARNING,
+                                             flags=gtk.DIALOG_MODAL,
+                                             buttons=gtk.BUTTONS_NONE)
+                question.add_button(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL)
+                question.add_button(gtk.STOCK_NO, gtk.RESPONSE_NO)
+                question.add_button(gtk.STOCK_YES, gtk.RESPONSE_YES)
+                question.set_markup("The Result Script has been changed. Save changes?")
+
+                response = question.run()
+                question.destroy()
+                
+                if response == gtk.RESPONSE_CANCEL:
+                    return True
+                elif response == gtk.RESPONSE_YES:
+                    current_page = self.main_notebook.get_current_page( )
+                    self.main_notebook.set_current_page(1)
+                    if self.sw.res_script_filename is None:
+                        self.sw.save_file_as()
+                    else:
+                        self.sw.save_file()
+                    self.main_notebook.set_current_page(current_page)
+                
+            
+
             self.config = None
             self.sw = None
             self.monitor = None
@@ -252,7 +304,14 @@ class DamarisGUI:
             gtk.main_quit( )
             return True
         else:
-            print "Stop Experiment please! (ToDo: Dialog)"
+            question = gtk.MessageDialog(parent=self.xml_gui.get_widget( "main_window"),
+                                        type=gtk.MESSAGE_ERROR,
+                                        flags=gtk.DIALOG_MODAL,
+                                        buttons=gtk.BUTTONS_OK)
+            question.set_markup("Experiment still running, can not close DAMARIS!")
+
+            response = question.run()
+            question.destroy()
             return True
 
     # toolbar related events:
@@ -988,16 +1047,58 @@ class ScriptWidgets:
         self.res_script_filename = None
 
         # load syntax description for syntax highlighting (defined in python.xml)
-        sl = SyntaxLoader( "python" )
+        #sl = SyntaxLoader( "python" )
         # script buffers:
         self.experiment_script_textview = self.xml_gui.get_widget( "experiment_script_textview" )
         self.data_handling_textview = self.xml_gui.get_widget( "data_handling_textview" )
 
         # create and set syntax-highlighting text-buffers as textview backends
-        self.experiment_script_textbuffer = CodeBuffer( lang=sl )
+        self.experiment_script_textbuffer = gtksourceview2.Buffer()
-        self.data_handling_textbuffer = CodeBuffer( lang=sl )
+        self.data_handling_textbuffer = gtksourceview2.Buffer()
+        
+        lm = gtksourceview2.LanguageManager()
+        langpython = lm.get_language("python")
+        
+        self.experiment_script_textbuffer.set_language(langpython)
+        self.experiment_script_textbuffer.set_highlight_syntax(True)
+        self.data_handling_textbuffer.set_language(langpython)
+        self.data_handling_textbuffer.set_highlight_syntax(True)
+        
+        
         self.experiment_script_textview.set_buffer( self.experiment_script_textbuffer )
+        self.experiment_script_textview.set_show_line_numbers(True)
+        self.experiment_script_textview.set_auto_indent(True)
         self.data_handling_textview.set_buffer( self.data_handling_textbuffer )
+        self.data_handling_textview.set_show_line_numbers(True)
+        self.data_handling_textview.set_auto_indent(True)
+        
+        keywords = """for if else elif in print try finally except global lambda not or pass def
+class import from as return yield while continue break assert None True False AccumulatedValue
+Accumulation MeasurementResult ADC_Result Experiment synchronize sleep result data isinstance
+issubclass min max abs pow range xrange log_range lin_range staggered_range int float zip file
+combine_ranges interleaved_range get_sampling_rate uses_statistics write_to_csv write_to_hdf
+get_job_id get_description set_description get_xdata get_ydata set_xdate set_ydata"""
+        
+        keywordsbuffer = gtksourceview2.Buffer()
+        keywordsbuffer.set_text(keywords)
+        
+        compexp = self.experiment_script_textview.get_completion()
+        compres = self.data_handling_textview.get_completion()
+        
+        compwgen = gtksourceview2.CompletionWords('Keywords')
+        compwgen.register(keywordsbuffer)
+        
+        compwexp = gtksourceview2.CompletionWords('Experimentscript')
+        compwexp.register(self.experiment_script_textbuffer)
+        
+        compwres = gtksourceview2.CompletionWords('Resultscript')
+        compwres.register(self.data_handling_textbuffer)
+        
+        compexp.add_provider(compwgen)
+        compres.add_provider(compwgen)
+        
+        compexp.add_provider(compwexp)
+        compres.add_provider(compwres)
 
         # script fonts are atlered by configuration
         # clipboard
@@ -1040,6 +1141,9 @@ class ScriptWidgets:
         self.toolbar_save_as_button = self.xml_gui.get_widget( "toolbar_save_as_button" )
         self.toolbar_save_all_button = self.xml_gui.get_widget( "toolbar_save_all_button" )
         self.toolbar_check_scripts_button = self.xml_gui.get_widget( "toolbar_check_scripts_button" )
+        self.toolbar_undo_button = self.xml_gui.get_widget( "toolbar_undo_button" )
+        self.toolbar_redo_button = self.xml_gui.get_widget( "toolbar_redo_button" )
+        self.toolbar_search_button = self.xml_gui.get_widget("toolbar_search_button")
         # events
         self.xml_gui.signal_connect( "on_toolbar_open_file_button_clicked", self.open_file )
         self.xml_gui.signal_connect( "on_toolbar_new_button_clicked", self.new_file )
@@ -1047,6 +1151,9 @@ class ScriptWidgets:
         self.xml_gui.signal_connect( "on_toolbar_save_file_button_clicked", self.save_file )
         self.xml_gui.signal_connect( "on_toolbar_save_all_button_clicked", self.save_all_files )
         self.xml_gui.signal_connect( "on_toolbar_check_scripts_button_clicked", self.check_script )
+        self.xml_gui.signal_connect( "on_toolbar_undo_button_clicked", self.undo )
+        self.xml_gui.signal_connect( "on_toolbar_redo_button_clicked", self.redo )
+        self.xml_gui.signal_connect( "on_toolbar_search_button_clicked", self.search )
 
         # my notebook
         self.main_notebook = self.xml_gui.get_widget( "main_notebook" )
@@ -1062,14 +1169,18 @@ class ScriptWidgets:
     def set_scripts( self, exp_script=None, res_script=None ):
         # load buffers and set cursor to front
         if exp_script is not None:
+            self.experiment_script_textbuffer.begin_not_undoable_action()
             self.experiment_script_textbuffer.set_text( unicode( exp_script ) )
             self.experiment_script_textbuffer.place_cursor( self.experiment_script_textbuffer.get_start_iter( ) )
             self.experiment_script_textbuffer.set_modified( False )
+            self.experiment_script_textbuffer.end_not_undoable_action()
             self.textviews_moved( self.experiment_script_textview )
         if res_script is not None:
+            self.data_handling_textbuffer.begin_not_undoable_action()
             self.data_handling_textbuffer.set_text( unicode( res_script ) )
             self.data_handling_textbuffer.place_cursor( self.data_handling_textbuffer.get_start_iter( ) )
             self.data_handling_textbuffer.set_modified( False )
+            self.data_handling_textbuffer.end_not_undoable_action()
             self.textviews_moved( self.data_handling_textview )
         self.set_toolbuttons_status( )
 
@@ -1117,14 +1228,23 @@ class ScriptWidgets:
             exp_modified = self.experiment_script_textbuffer.get_modified( )
             res_modified = self.data_handling_textbuffer.get_modified( )
             enable_save = True
+            canundo = False
+            canredo = False
             if current_page == 0:
                 enable_save = exp_modified and self.exp_script_filename is not None
+                canundo = self.experiment_script_textbuffer.can_undo()
+                canredo = self.experiment_script_textbuffer.can_redo()
             elif current_page == 1:
                 enable_save = res_modified and self.res_script_filename is not None
+                canundo = self.data_handling_textbuffer.can_undo()
+                canredo = self.data_handling_textbuffer.can_redo()
             self.toolbar_save_button.set_sensitive( enable_save )
             self.toolbar_save_as_button.set_sensitive( True )
             self.toolbar_save_all_button.set_sensitive( exp_modified or res_modified )
             self.toolbar_check_scripts_button.set_sensitive( True )
+            self.toolbar_undo_button.set_sensitive(canundo)
+            self.toolbar_redo_button.set_sensitive(canredo)
+            self.toolbar_search_button.set_sensitive(True)
         else:
             # disable toolbar
             self.toolbar_new_button.set_sensitive( False )
@@ -1133,6 +1253,9 @@ class ScriptWidgets:
             self.toolbar_save_as_button.set_sensitive( False )
             self.toolbar_save_all_button.set_sensitive( False )
             self.toolbar_check_scripts_button.set_sensitive( False )
+            self.toolbar_undo_button.set_sensitive(False)
+            self.toolbar_redo_button.set_sensitive(False)
+            self.toolbar_search_button.set_sensitive(current_page == 3)
 
         if self.exp_script_filename:
             exp_titlename = unicode( os.path.splitext( os.path.basename( self.exp_script_filename ) )[ 0 ] )
@@ -1256,27 +1379,7 @@ class ScriptWidgets:
         """
         #print "keypress", event.state, event.keyval
         if event.state & gtk.gdk.CONTROL_MASK != 0:
-            if event.keyval == gtk.gdk.keyval_from_name( "c" ):
+            if event.keyval == gtk.gdk.keyval_from_name( "s" ):
-                if self.main_notebook.get_current_page( ) == 0:
-                    self.experiment_script_textbuffer.copy_clipboard( self.main_clipboard )
-                elif self.main_notebook.get_current_page( ) == 1:
-                    self.data_handling_textbuffer.copy_clipboard( self.main_clipboard )
-                return True
-            elif event.keyval == gtk.gdk.keyval_from_name( "x" ):
-                # cut_clipboard(clipboard, textview editable?)
-                if self.main_notebook.get_current_page( ) == 0:
-                    self.experiment_script_textbuffer.cut_clipboard( self.main_clipboard, True )
-                elif self.main_notebook.get_current_page( ) == 1:
-                    self.data_handling_textbuffer.cut_clipboard( self.main_clipboard, True )
-                return True
-            elif event.keyval == gtk.gdk.keyval_from_name( "v" ):
-                # paste_clipboard(clipboard, textpos (None = Cursor), textview editable?)
-                if self.main_notebook.get_current_page( ) == 0:
-                    self.experiment_script_textbuffer.paste_clipboard( self.main_clipboard, None, True )
-                elif self.main_notebook.get_current_page( ) == 1:
-                    self.data_handling_textbuffer.paste_clipboard( self.main_clipboard, None, True )
-                return True
-            elif event.keyval == gtk.gdk.keyval_from_name( "s" ):
                 # save buffer
                 page = self.main_notebook.get_current_page( )
                 if (self.exp_script_filename, self.res_script_filename)[ page ] is None:
@@ -1286,88 +1389,13 @@ class ScriptWidgets:
                 return True
             elif event.keyval == gtk.gdk.keyval_from_name( "S" ):
                 # save both buffers
-                print "ToDo: save both buffers"
                 self.save_all_files( None, None )
                 return True
+            elif event.keyval == gtk.gdk.keyval_from_name("f"):
+                self.search(None, None)
+                return True
             return 0
 
-        # indent helpers
-        # tab keyval 0xff09
-        # backspace keyval 0xff08
-        # to do check if modified event is called after all
-        if (event.keyval == 0xFF09 or event.keyval == 0xFF08):
-            textbuffer = widget.get_buffer( )
-            # do not do things during selection
-            if (textbuffer.get_selection_bounds( )):
-                return 0
-            cursor_mark = textbuffer.get_insert( )
-            cursor_iter = textbuffer.get_iter_at_mark( cursor_mark )
-            if (cursor_iter.starts_line( )):
-                # backspace with normal function at line start
-                if (event.keyval == 0xFF08):
-                    self.textviews_moved( widget )
-                    return 0
-            # now get iterator at line start
-            linestart_iter = cursor_iter.copy( )
-            linestart_iter.set_line_offset( 0 )
-            linebegin = textbuffer.get_text( linestart_iter, cursor_iter ).expandtabs( )
-            if (len( linebegin ) != 0 and not linebegin.isspace( )):
-                # just make the spaces go away
-                textbuffer.delete( linestart_iter, cursor_iter )
-                textbuffer.insert( linestart_iter, linebegin )
-                self.textviews_moved( widget )
-                return 0
-            # find all space at the begin
-            while (not cursor_iter.ends_line( )
-                   and not cursor_iter.is_end( )
-                   and cursor_iter.get_char( ).isspace( )):
-                cursor_iter.forward_char( )
-            linebegin = textbuffer.get_text( linestart_iter, cursor_iter )
-            if (event.keyval == 0xFF08):
-                # backspace shortens space
-                linebegin = u' ' * ((len( linebegin ) - 1) / 4) * 4
-            elif (event.keyval == 0xFF09):
-                # tab widens space
-                linebegin = u' ' * ((len( linebegin ) + 4) / 4) * 4
-
-            textbuffer.delete( linestart_iter, cursor_iter )
-            textbuffer.insert( linestart_iter, linebegin )
-            self.textviews_moved( widget )
-            return 1
-        # implement convenience function for enter key
-        elif (event.keyval == 0xFF0D):
-            textbuffer = widget.get_buffer( )
-            # do not do things during selection
-            if (textbuffer.get_selection_bounds( )):
-                return 0
-            cursor_mark = textbuffer.get_insert( )
-            cursor_iter = textbuffer.get_iter_at_mark( cursor_mark )
-            # determine this line's indent count
-            linestart_iter = cursor_iter.copy( )
-            linestart_iter.set_line_offset( 0 )
-            spaceend_iter = linestart_iter.copy( )
-            while (not spaceend_iter.ends_line( )
-                   and not spaceend_iter.is_end( )
-                   and spaceend_iter.get_char( ).isspace( )):
-                spaceend_iter.forward_char( )
-            linebegin = textbuffer.get_text( linestart_iter, spaceend_iter ).expandtabs( )
-            indent_length = len( linebegin )
-            textbuffer.delete( linestart_iter, spaceend_iter )
-            textbuffer.insert( linestart_iter, u' ' * indent_length )
-            # start with the real work
-            cursor_iter = textbuffer.get_iter_at_mark( cursor_mark )
-            if (not cursor_iter.starts_line( )):
-                # find last char before cursor
-                lastchar_iter = cursor_iter.copy( )
-                lastchar_iter.backward_char( )
-                if (lastchar_iter.get_char( ) == u":"):
-                    indent_length += 4
-            # now find indent of next line...
-            textbuffer.insert( cursor_iter, u'\n' + (u' ' * indent_length) )
-            widget.scroll_to_mark( cursor_mark, 0.0, 0 )
-            self.textviews_moved( widget )
-            return 1
-
         #self.textviews_moved(widget)
         return 0
 
@@ -1399,7 +1427,22 @@ class ScriptWidgets:
             return 0
 
         if modified:
-            print "ToDo: Save First Dialog"
+            question = gtk.MessageDialog(parent=self.xml_gui.get_widget( "main_window"),
+                                        type=gtk.MESSAGE_WARNING,
+                                        flags=gtk.DIALOG_MODAL,
+                                        buttons=gtk.BUTTONS_NONE)
+            question.add_button(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL)
+            question.add_button(gtk.STOCK_NO, gtk.RESPONSE_NO)
+            question.add_button(gtk.STOCK_YES, gtk.RESPONSE_YES)
+            question.set_markup("The file has been changed. Save changes?")
+
+            response = question.run()
+            question.destroy()
+                    
+            if response == gtk.RESPONSE_YES:
+                self.save_file()
+            elif response == gtk.RESPONSE_CANCEL:
+                return 0
 
         def response( self, response_id, script_widget ):
             if response_id == gtk.RESPONSE_OK:
@@ -1491,7 +1534,17 @@ class ScriptWidgets:
 
                 absfilename = os.path.abspath( file_name )
                 if os.access( file_name, os.F_OK ):
-                    print "ToDo: Overwrite file question"
+                    question = gtk.MessageDialog(parent=script_widget.xml_gui.get_widget( "main_window"),
+                                                 type=gtk.MESSAGE_WARNING,
+                                                 flags=gtk.DIALOG_MODAL,
+                                                 buttons=(gtk.BUTTONS_YES_NO))
+                    question.set_markup("The file already exists. Do you want to overwrite the existing file and delete its contents?")
+
+                    response = question.run()
+                    question.destroy()
+                    
+                    if response != gtk.RESPONSE_YES:
+                        return True
 
                 current_page = script_widget.main_notebook.get_current_page( )
                 if current_page == 0:
@@ -1549,6 +1602,147 @@ class ScriptWidgets:
 
         self.main_notebook.set_current_page( current_page )
         
+    def undo(self, widget=None, Data=None ):
+        if not self.editing_state:
+            return 0
+        current_page = self.main_notebook.get_current_page( )
+        if current_page == 0:
+            self.experiment_script_textview.do_undo(self.experiment_script_textview)
+        elif current_page == 1:
+            self.data_handling_textview.do_undo(self.data_handling_textview)
+        self.set_toolbuttons_status()
+    
+    def redo(self, widget=None, Data=None ):
+        if not self.editing_state:
+            return 0
+        current_page = self.main_notebook.get_current_page( )
+        if current_page == 0:
+            self.experiment_script_textview.do_redo(self.experiment_script_textview)
+        elif current_page == 1:
+            self.data_handling_textview.do_redo(self.data_handling_textview)
+        self.set_toolbuttons_status()
+        
+    def search(self, widget=None, Data=None):
+        def response(script_widget, response_id, damsw, tb ):
+            if response_id != -1 and response_id != 1:
+                script_widget.destroy()
+                return True
+            
+            current_page = damsw.main_notebook.get_current_page( )
+            
+            startiter = None
+            enditer = None
+            logview = None
+            logbuffer = None
+            
+            if current_page == 0:
+                if damsw.experiment_script_textbuffer.get_has_selection():
+                    startiter, enditer = damsw.experiment_script_textbuffer.get_selection_bounds()
+                else:
+                    mark = damsw.experiment_script_textbuffer.get_insert()
+                    startiter = damsw.experiment_script_textbuffer.get_iter_at_mark(mark)
+                    enditer = startiter
+            elif current_page == 1:
+                if damsw.data_handling_textbuffer.get_has_selection():
+                    startiter, enditer = damsw.data_handling_textbuffer.get_selection_bounds()
+                else:
+                    mark = damsw.data_handling_textbuffer.get_insert()
+                    startiter = damsw.data_handling_textbuffer.get_iter_at_mark(mark)
+                    enditer = startiter
+            elif current_page == 3:
+                logview = damsw.xml_gui.get_widget( "messages_textview" )
+                logbuffer = logview.get_buffer()
+                if logbuffer.get_has_selection():
+                    startiter, enditer = logbuffer.get_selection_bounds()
+                else:
+                    mark = logbuffer.get_insert()
+                    startiter = logbuffer.get_iter_at_mark(mark)
+                    enditer = startiter
+            else:
+                script_widget.destroy()
+                return True
+            
+            searchstring = tb.get_text()
+            
+            if len(searchstring) > 0:
+                
+                match_start = None
+                match_end = None
+                
+                try:
+                    if response_id == -1:
+                        match_start, match_end = startiter.backward_search(searchstring, gtk.TEXT_SEARCH_TEXT_ONLY)
+                    elif response_id == 1:
+                        match_start, match_end = enditer.forward_search(searchstring, gtk.TEXT_SEARCH_TEXT_ONLY)
+                except:
+                    pass
+                    
+                if match_start is not None and match_end is not None:
+                    if current_page == 0:
+                        damsw.experiment_script_textbuffer.select_range(match_start, match_end)
+                        damsw.experiment_script_textview.scroll_to_iter(match_start, 0.2)
+                        damsw.textviews_moved(damsw.experiment_script_textview)
+                    elif current_page == 1:
+                        damsw.data_handling_textbuffer.select_range(match_start, match_end)
+                        damsw.data_handling_textview.scroll_to_iter(match_start, 0.2)
+                        damsw.textviews_moved(damsw.data_handling_textview)
+                    elif current_page == 3:
+                        logbuffer.select_range(match_start, match_end)
+                        logview.scroll_to_iter(match_start, 0.2)
+                        
+            
+            
+            
+        dialog = gtk.Dialog(title="Search", parent=self.xml_gui.get_widget("main_window"), flags=gtk.DIALOG_DESTROY_WITH_PARENT,
+                            buttons=(gtk.STOCK_CLOSE, gtk.RESPONSE_CLOSE, "Find last", -1, "Find next", 1))
+        cont = dialog.get_content_area()
+        
+        markedstring = ""
+        current_page = self.main_notebook.get_current_page( )
+        
+        startit = None
+        endit = None
+        logbuffer = None
+        
+        if current_page == 0:
+            if self.experiment_script_textbuffer.get_has_selection():
+                startit, endit = self.experiment_script_textbuffer.get_selection_bounds()
+                markedstring = self.experiment_script_textbuffer.get_text(startit, endit)
+        elif current_page == 1:
+            if self.data_handling_textbuffer.get_has_selection():
+                startit, endit = self.data_handling_textbuffer.get_selection_bounds()
+                markedstring = self.data_handling_textbuffer.get_text(startit, endit)
+        elif current_page == 3:
+            logview = self.xml_gui.get_widget( "messages_textview" )
+            logbuffer = logview.get_buffer()
+            if logbuffer.get_has_selection():
+                startit, endit = logbuffer.get_selection_bounds()
+                markedstring = logbuffer.get_text(startit, endit)
+        
+        markedstring = markedstring.strip()
+        
+        textbox = gtk.Entry()
+        textbox.set_text(markedstring)
+        
+        cont.add(textbox)
+        
+        dialog.set_default_response(1)
+        dialog.connect("response", response, self, textbox)
+        dialog.set_resizable(False)
+        
+        dialog.show_all()
+        
+        if startit is not None and endit is not None:
+            if current_page == 0:
+                self.experiment_script_textbuffer.select_range(startit, endit)
+            elif current_page == 1:
+                self.data_handling_textbuffer.select_range(startit, endit)
+            elif current_page == 3:
+                logbuffer.select_range(startit, endit)
+            
+        
+        
+
     def new_file( self, widget, Data=None ):
 
         if not self.editing_state:
@@ -1556,12 +1750,44 @@ class ScriptWidgets:
         current_page = self.main_notebook.get_current_page( )
         if current_page == 0:
             if self.experiment_script_textbuffer.get_modified( ):
-                print "ToDo: Save before Clear Dialog"
+                question = gtk.MessageDialog(parent=self.xml_gui.get_widget( "main_window"),
+                                            type=gtk.MESSAGE_WARNING,
+                                            flags=gtk.DIALOG_MODAL,
+                                            buttons=gtk.BUTTONS_NONE)
+                question.add_button(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL)
+                question.add_button(gtk.STOCK_NO, gtk.RESPONSE_NO)
+                question.add_button(gtk.STOCK_YES, gtk.RESPONSE_YES)
+                question.set_markup("The file has been changed. Save changes?")
+
+                response = question.run()
+                question.destroy()
+                    
+                if response == gtk.RESPONSE_YES:
+                    self.save_file()
+                elif response == gtk.RESPONSE_CANCEL:
+                    return 0
+                
             self.set_scripts( "", None )
             self.exp_script_filename = None
         elif current_page == 1:
             if self.data_handling_textbuffer.get_modified( ):
-                print "ToDo: Save before Clear Dialog"
+                question = gtk.MessageDialog(parent=self.xml_gui.get_widget( "main_window"),
+                                            type=gtk.MESSAGE_WARNING,
+                                            flags=gtk.DIALOG_MODAL,
+                                            buttons=gtk.BUTTONS_NONE)
+                question.add_button(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL)
+                question.add_button(gtk.STOCK_NO, gtk.RESPONSE_NO)
+                question.add_button(gtk.STOCK_YES, gtk.RESPONSE_YES)
+                question.set_markup("The file has been changed. Save changes?")
+
+                response = question.run()
+                question.destroy()
+                    
+                if response == gtk.RESPONSE_YES:
+                    self.save_file()
+                elif response == gtk.RESPONSE_CANCEL:
+                    return 0
+                
             self.set_scripts( None, "" )
             self.res_script_filename = None
         self.set_toolbuttons_status( )
@@ -2440,7 +2666,17 @@ class MonitorWidgets:
 
                 absfilename = os.path.abspath( file_name )
                 if os.access( file_name, os.F_OK ):
-                    log( "ToDo: Overwrite file question" )
+                    question = gtk.MessageDialog(parent=script_widget.xml_gui.get_widget( "main_window"),
+                                                 type=gtk.MESSAGE_WARNING,
+                                                 flags=gtk.DIALOG_MODAL,
+                                                 buttons=(gtk.BUTTONS_YES_NO))
+                    question.set_markup("The file already exists. Do you want to overwrite the existing file and delete its contents?")
+
+                    response = question.run()
+                    question.destroy()
+                    
+                    if response != gtk.RESPONSE_YES:
+                        return True
 
                 textfile = file( absfilename, "w" )
                 tmpfile.seek( 0 )

src/gui/ExperimentHandling.py

@@ -26,6 +26,11 @@ class ExperimentHandling(threading.Thread):
         if self.quit_flag.isSet():
             raise StopIteration
         
+    def sleep(self, seconds):
+        self.quit_flag.wait(seconds)
+        if self.quit_flag.isSet():
+            raise StopIteration
+
     def run(self):
         dataspace={}
         exp_classes = __import__('damaris.experiments', dataspace, dataspace, ['Experiment'])
@@ -36,6 +41,7 @@ class ExperimentHandling(threading.Thread):
 
         dataspace["data"]=self.data
         dataspace["synchronize"]=self.synchronize
+        dataspace["sleep"]=self.sleep
         self.raised_exception = None
         self.location = None
         exp_iterator=None
@@ -84,7 +90,7 @@ class ExperimentHandling(threading.Thread):
                     if "__resultsinadvance" in self.data and self.data["__resultsinadvance"]+100<job.job_id:
                         self.quit_flag.wait(0.05)
                 if self.quit_flag.isSet():
-                    data_sapce=None
+                    dataspace=None
                     exp_iterator=None
                     break
 

src/gui/damaris.glade

@@ -99,6 +99,44 @@
                 <property name="visible">True</property>
               </widget>
             </child>
+            <child>
+              <widget class="GtkToolButton" id="toolbar_undo_button">
+                <property name="visible">True</property>
+                <property name="tooltip" translatable="yes">Undo</property>
+                <property name="stock_id">gtk-undo</property>
+                <signal name="clicked" handler="on_toolbar_undo_button_clicked"/>
+              </widget>
+              <packing>
+                <property name="homogeneous">True</property>
+              </packing>
+            </child>
+            <child>
+              <widget class="GtkToolButton" id="toolbar_redo_button">
+                <property name="visible">True</property>
+                <property name="tooltip" translatable="yes">Redo</property>
+                <property name="stock_id">gtk-redo</property>
+                <signal name="clicked" handler="on_toolbar_redo_button_clicked"/>
+              </widget>
+              <packing>
+                <property name="homogeneous">True</property>
+              </packing>
+            </child>
+            <child>
+              <widget class="GtkToolButton" id="toolbar_search_button">
+                <property name="visible">True</property>
+                <property name="tooltip" translatable="yes">Search</property>
+                <property name="stock_id">gtk-find</property>
+                <signal name="clicked" handler="on_toolbar_search_button_clicked"/>
+              </widget>
+              <packing>
+                <property name="homogeneous">True</property>
+              </packing>
+            </child>
+            <child>
+              <widget class="GtkSeparatorToolItem" id="separatortoolitem3">
+                <property name="visible">True</property>
+              </widget>
+            </child>
             <child>
               <widget class="GtkToolButton" id="toolbar_print_button">
                 <property name="visible">True</property>
@@ -259,7 +297,7 @@
                     <property name="can_focus">True</property>
                     <property name="shadow_type">GTK_SHADOW_IN</property>
                     <child>
-                      <widget class="GtkTextView" id="experiment_script_textview">
+                      <widget class="GtkSourceView" id="experiment_script_textview">
                         <property name="visible">True</property>
                         <property name="can_focus">True</property>
                       </widget>
@@ -361,7 +399,7 @@
                     <property name="can_focus">True</property>
                     <property name="shadow_type">GTK_SHADOW_IN</property>
                     <child>
-                      <widget class="GtkTextView" id="data_handling_textview">
+                      <widget class="GtkSourceView" id="data_handling_textview">
                         <property name="visible">True</property>
                         <property name="can_focus">True</property>
                         <signal name="event" handler="on_data_handling_textview_event"/>