Added support to save history in python console

- edited console.py to save history on closeEvent
- edited console_sci.py to add read, clear and write history methods
- edited help file
- update to Italian translate file

i18n/qgis_it.ts

@@ -6281,13 +6281,21 @@ Cambiare questa situazione prima, perché il plugin OSM non quale layer è la de
         <source>Run command</source>
         <translation>Esegui comando</translation>
     </message>
+    <message>
+        <source>## History saved successfully ##</source>
+        <translation>## Storia comandi salvata con successo ##</translation>
+    </message>
+    <message>
+        <source>## History cleared successfully ##</source>
+        <translation>## Storia comandi cancellata con successo ##</translation>
+    </message>
     <message>
         <source>## To access Quantum GIS environment from this console
-## use qgis.utils.iface object (instance of QgisInterface class).
+## use qgis.utils.iface object (instance of QgisInterface class). Read help for more info.
 
 </source>
         <translation>## Per accedere all&apos;ambiente Quantum GIS da questa console
-## usa l&apos;oggetto qgis.utils.iface (istanza della classe QgisInterface).
+## usa l&apos;oggetto qgis.utils.iface (istanza della classe QgisInterface). Consulta l'aiuto per ottenere più informazioni.
 
 </translation>
     </message>

python/console.py

@@ -260,6 +260,7 @@ def openHelp(self):
         dlg.exec_()
 
     def closeEvent(self, event):
+        self.edit.writeHistoryFile()
         QWidget.closeEvent(self, event)
 
 

python/console_sci.py

@@ -32,6 +32,7 @@
 import code
 
 _init_commands = ["from qgis.core import *", "import qgis.utils"]
+_historyFile = os.path.join(str(QDir.homePath()),".qgis","console_history.txt")
 
 class PythonEdit(QsciScintilla, code.InteractiveInterpreter):
     def __init__(self, parent=None):
@@ -59,6 +60,8 @@ def __init__(self, parent=None):
 
         self.history = QStringList()
         self.historyIndex = 0
+        # Read history command file
+        self.readHistoryFile()
 
         # Brace matching: enable for a brace immediately before or after
         # the current position
@@ -206,7 +209,7 @@ def setLexers(self, lexer):
     def insertInitText(self):
         #self.setLexers(False)
         txtInit = QCoreApplication.translate("PythonConsole","## To access Quantum GIS environment from this console\n"
-                                             "## use qgis.utils.iface object (instance of QgisInterface class).\n\n")
+                                             "## use qgis.utils.iface object (instance of QgisInterface class). Read help for more info.\n\n")
         initText = self.setText(txtInit)
 
     def getCurrentPos(self):
@@ -311,6 +314,29 @@ def updateHistory(self, command):
                 self.history.append(command)
         self.historyIndex = len(self.history)
 
+    def writeHistoryFile(self):
+        #hystoryFile = os.path.join(str(QDir.homePath()),".qgis","console_history.txt")
+        wH = open(_historyFile, 'w')
+        for s in self.history:
+            wH.write(s + '\n')
+        wH.close()
+
+    def readHistoryFile(self):
+        #hystoryFile = os.path.join(str(QDir.homePath()),".qgis","console_history.txt")
+        fileExist = QFile.exists(_historyFile)
+        if fileExist:
+            rH = open(_historyFile, 'r')
+            for line in rH:
+                if line != "\n":
+                    l = line.rstrip('\n')
+                    self.updateHistory(l)
+        else:
+            return
+
+    def clearHistoryFile(self):
+        cH = open(_historyFile, 'w')
+        cH.close()
+
     def showPrevious(self):
         if self.historyIndex < len(self.history) and not self.history.isEmpty():
             line, pos = self.getCurLine()
@@ -475,18 +501,30 @@ def currentCommand(self):
     def runCommand(self, cmd):
         self.updateHistory(cmd)
         self.SendScintilla(QsciScintilla.SCI_NEWLINE)
-        self.buffer.append(cmd)
-        src = "\n".join(self.buffer)
-        more = self.runsource(src, "<input>")
-        if not more:
-            self.buffer = []
-
-        output = sys.stdout.get_and_clean_data()
-        if output:
-            self.append(output)
-
-        self.move_cursor_to_end()
-        self.displayPrompt(more)
+        if cmd in ('_save', '_clear'):
+            if cmd == '_save':
+                self.writeHistoryFile()
+                print QCoreApplication.translate("PythonConsole", "## History saved successfully ##")
+                #del self.buffer[-1]
+            elif cmd == '_clear':
+                self.clearHistoryFile()
+                print QCoreApplication.translate("PythonConsole", "## History cleared successfully ##")
+                #del self.buffer[-1]
+            output = sys.stdout.get_and_clean_data()
+            if output:
+                self.append(output)
+            self.displayPrompt(False)
+        else:
+            self.buffer.append(cmd)
+            src = "\n".join(self.buffer)
+            more = self.runsource(src, "<input>")
+            if not more:
+                self.buffer = []
+            output = sys.stdout.get_and_clean_data()
+            if output:
+                self.append(output)
+            self.move_cursor_to_end()
+            self.displayPrompt(more)
 
     def write(self, txt):
         self.SendScintilla(QsciScintilla.SCI_SETSTYLING, len(txt), 1)

python/helpConsole/help.htm

@@ -22,7 +22,7 @@ <h2>Python Console for QGIS</h2>
 		</tr>
 	</table>
 	<p align="justify">
-		Now you can use auto-completion for syntax in console!!!
+		Now you can use auto-completion and highlighting for syntax in console!!!
 		<br>
 		(Thanks to Larry Shaffer who provided the API files)
 		<br><br>
@@ -31,6 +31,10 @@ <h2>Python Console for QGIS</h2>
 		To import the class QgisInterface can also use the dedicated 
 		button on the toolbar on the left.
 		<br><br>
+		To save history commands type '<b>_save</b>' in console or close this widget.
+		<br><br>
+		To clear history commands type '<b>_clear</b>' in console.
+		<br><br>
 		The following is a description of the tools in the toolbar:
 	</p>
 	<table width="100%" bordercolor="#000" border="1">