- added a protection on opening the tools database UI if the tools DB file is not loaded

CHANGELOG.md

@@ -13,6 +13,7 @@ CHANGELOG for FlatCAM beta
 - updated Punch Gerber Tool such that the aperture table is updated upon clicking of the checboxes in Processed Pads Type
 - updated Punch Gerber Tool: the Excellon method now takes into consideration the pads choice 
 - minor change for the FCComboBox UI element by setting its size policy as ignored so it will not expand the notebook when the name of one of its items is very long
+- added a protection on opening the tools database UI if the tools DB file is not loaded
 
 28.10.2020
 

appObjects/FlatCAMGeometry.py

@@ -1100,7 +1100,9 @@ class GeometryObject(FlatCAMObj, Geometry):
             if self.app.ui.plot_tab_area.tabText(idx) == _("Tools Database"):
                 self.app.ui.plot_tab_area.setCurrentWidget(self.app.tools_db_tab)
                 break
-        self.app.on_tools_database()
+        ret_val = self.app.on_tools_database()
+        if ret_val == 'fail':
+            return
         self.app.tools_db_tab.ok_to_add = True
         self.app.tools_db_tab.ui.buttons_frame.hide()
         self.app.tools_db_tab.ui.add_tool_from_db.show()

appTools/ToolCutOut.py

@@ -525,7 +525,9 @@ class CutOut(AppTool):
             if self.app.ui.plot_tab_area.tabText(idx) == _("Tools Database"):
                 self.app.ui.plot_tab_area.setCurrentWidget(self.app.tools_db_tab)
                 break
-        self.app.on_tools_database(source='cutout')
+        ret_val = self.app.on_tools_database(source='cutout')
+        if ret_val == 'fail':
+            return
         self.app.tools_db_tab.ok_to_add = True
         self.app.tools_db_tab.ui.buttons_frame.hide()
         self.app.tools_db_tab.ui.add_tool_from_db.show()

appTools/ToolIsolation.py

@@ -2680,7 +2680,9 @@ class ToolIsolation(AppTool, Gerber):
             if self.app.ui.plot_tab_area.tabText(idx) == _("Tools Database"):
                 self.app.ui.plot_tab_area.setCurrentWidget(self.app.tools_db_tab)
                 break
-        self.app.on_tools_database(source='iso')
+        ret_val = self.app.on_tools_database(source='iso')
+        if ret_val == 'fail':
+            return
         self.app.tools_db_tab.ok_to_add = True
         self.app.tools_db_tab.ui.buttons_frame.hide()
         self.app.tools_db_tab.ui.add_tool_from_db.show()

appTools/ToolNCC.py

@@ -3809,7 +3809,9 @@ class NonCopperClear(AppTool, Gerber):
             if self.app.ui.plot_tab_area.tabText(idx) == _("Tools Database"):
                 self.app.ui.plot_tab_area.setCurrentWidget(self.app.tools_db_tab)
                 break
-        self.app.on_tools_database(source='ncc')
+        ret_val = self.app.on_tools_database(source='ncc')
+        if ret_val == 'fail':
+            return
         self.app.tools_db_tab.ok_to_add = True
         self.app.tools_db_tab.ui.buttons_frame.hide()
         self.app.tools_db_tab.ui.add_tool_from_db.show()

appTools/ToolPaint.py

@@ -2725,7 +2725,9 @@ class ToolPaint(AppTool, Gerber):
             if self.app.ui.plot_tab_area.tabText(idx) == _("Tools Database"):
                 self.app.ui.plot_tab_area.setCurrentWidget(self.app.tools_db_tab)
                 break
-        self.app.on_tools_database(source='paint')
+        ret_val = self.app.on_tools_database(source='paint')
+        if ret_val == 'fail':
+            return
         self.app.tools_db_tab.ok_to_add = True
         self.app.tools_db_tab.ui.buttons_frame.hide()
         self.app.tools_db_tab.ui.add_tool_from_db.show()

app_Main.py

@@ -5648,6 +5648,21 @@ class App(QtCore.QObject):
 
         :return:
         """
+        filename = self.data_path + '\\tools_db.FlatDB'
+
+        # load the database tools from the file
+        try:
+            with open(filename) as f:
+                __ = f.read()
+        except Exception as eros:
+            log.debug("The tools DB file is not loaded: %s" % str(eros))
+            log.error("Could not access tools DB file. The file may be locked,\n"
+                      "not existing or doesn't have the read permissions.\n"
+                      "Check to see if exists, it should be here: %s\n"
+                      "It may help to reboot the app, it will try to recreate it if it's missing." % self.data_path)
+            self.inform.emit('[ERROR] %s' % _("Could not load Tools DB file."))
+            return 'fail'
+
         for idx in range(self.ui.plot_tab_area.count()):
             if self.ui.plot_tab_area.tabText(idx) == _("Tools Database"):
                 # there can be only one instance of Tools Database at one time