From def8c40ffba0438573a3413b5db6f251deb6821a Mon Sep 17 00:00:00 2001
From: Cecilia <caggsld@gmail.com>
Date: Wed, 23 Jan 2013 21:08:55 +0000
Subject: se agrego metadata, data y se realizo el borrado

---
diff --git a/CalculArte.activity/activity.py b/CalculArte.activity/activity.py
index 7c67a03..85436e2 100644
--- a/CalculArte.activity/activity.py
+++ b/CalculArte.activity/activity.py
@@ -81,22 +81,23 @@ class CalculArteActivity(activity.Activity):
         # label with the text, make the string translatable
 
         vbox = gtk.VBox()
-        hbox = gtk.HBox()
-        label_historial = gtk.Label()
-        entry_visor = gtk.Entry()
+        hbox = gtk.HBox(True)
+        self.label_historial = gtk.Label()
+        self.label_historial.set_line_wrap(True)
+        self.entry_visor = gtk.Entry()
         table = gtk.Table(5,5, True)
         boton = gtk.Button('boton falso')
         #window.connect('destroy', self.destroy)
 
-        label_historial.set_text('Ultimo resultado:')      
+        self.label_historial.set_text('Ultimo resultado:')      
         #label_historial.justify()  
         
         
         #window.add(hbox)
         self.set_canvas(hbox)
         hbox.add(vbox)
-        hbox.add(label_historial)
-        vbox.add(entry_visor)
+        hbox.add(self.label_historial)
+        vbox.add(self.entry_visor)
         vbox.add(table)
         vbox.add(boton)
 
@@ -107,7 +108,7 @@ class CalculArteActivity(activity.Activity):
                 button = gtk.Button()
                 option = OPTIONS.pop()
                 button.set_label(option)
-                button.connect('activate', self.__button_cb, entry_visor, boton, label_historial)
+                button.connect('activate', self.__button_cb, self.entry_visor, boton, self.label_historial)
                 self.connect('key-press-event', self.__barrido_columnas_cb)
                 #canvas = self.get_canvas()
                 #canvas.connect('key-press-event', self.__barrido_columnas_cb)
@@ -133,8 +134,23 @@ class CalculArteActivity(activity.Activity):
 
     def __button_cb(self, button, entry, boton, label):
         if (button.get_label() == 'Aceptar'):
-            resultado = str(eval(entry.get_text()))
-            label.set_label('Ultimo resultado:\n' + entry.get_text() + ': ' + resultado)
+            try:
+            
+                resultado = str(eval(entry.get_text()))
+                label.set_label('Ultimo resultado:\n' + entry.get_text() + ': ' + resultado)
+            except ZeroDivisionError:
+                label.set_label('Ultimo resultado:\n  Error: Division por cero [' +  entry.get_text()+']' )
+                entry.set_text("")
+                
+            except:
+                label.set_label('Ultimo resultado:\n Imposible de realizar la operacion. Intente nuevamente')
+                entry.set_text("")
+            
+            
+            entry.set_text("")
+        elif (button.get_label() == 'Borrar'):
+            entry.set_text(entry.get_text()[0:entry.get_text_length()-1])
+          
         else:    
             entry.set_text(entry.get_text() + button.get_label())
         self._flag_fila_columna = 0
@@ -170,8 +186,6 @@ class CalculArteActivity(activity.Activity):
                 self._columnas_index = (self._columnas_index) % OPT_LENGHT
                 buttons_focus = buttons[(self._filas_index-1)*OPT_LENGHT:(self._filas_index-1)*OPT_LENGHT+OPT_LENGHT]
                 
-            print self._filas_index
-            print self._columnas_index   
             button = buttons_focus[self._columnas_index]
             button.grab_focus()
             
@@ -184,3 +198,46 @@ class CalculArteActivity(activity.Activity):
     
     def __barrido_columnas_cb(self, table, arg):
         self._flag_fila_columna = 1
+        
+        
+    def read_file(self, tmp_file):
+        """ datastore high-level interaction to read 
+        logging.debug("The tmp_file is at %s, for reading", tmp_file)"""
+
+        # resume metadata
+        try:
+            self.label_historial.set_label(self.metadata['entry'])
+            self._filas_index = int(self.metadata['fila'])
+            self._columnas_index = int(self.metadata['columna'])
+            self._flag_fila_columna = int(self.metadata['flag'])
+            buttons = table.get_children()
+            buttons.reverse()
+            buttons_focus = buttons[self._filas_index*OPT_LENGHT:self._filas_index*OPT_LENGHT+OPT_LENGHT]
+            for button in buttons:
+                button.modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color('dark gray'))
+            for button in buttons_focus:
+                button.modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color('light gray'))
+        except KeyError:
+            logging.error("No entry metadata")
+
+        # resume data
+        data = open(tmp_file, "r")
+        buffer = self.entry_visor
+        buffer.set_text(data.read())
+        data.close()
+
+    def write_file(self, tmp_file):
+        """ datastore high-level interaction to write 
+        logging.debug("The tmp_file is at %s, for writing", tmp_file)"""
+
+        # save metadata
+        self.metadata['entry'] = self.label_historial.get_label()
+        self.metadata['fila'] = self._filas_index
+        self.metadata['columna'] = self._columnas_index
+        self.metadata['flag'] = self._flag_fila_columna
+        
+        # save data
+        data = open(tmp_file, "w")
+        buffer = self.entry_visor.get_text()
+        data.write(buffer)
+        data.close()
--
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