Minor: Fixed return value

[biaweb_qt.git] / main_window.py

diff --git a/main_window.py b/main_window.py
index 6f033d6..799fdf8 100644 (file)
--- a/main_window.py
+++ b/main_window.py
@@ -2,12 +2,15 @@
 # Main Window class
 
 import PyQt4
+import sys
+
 import ui_main_window
 import site_configuration_dialog as scd
 import category_dialog as catd
 import article_dialog as artd
+import templates_dialog as tpld
+import generate_dialog as gend
 import biaweb_db
-import sys
 
 class MainWindow (PyQt4.QtGui.QMainWindow, ui_main_window.Ui_MainWindow):
        def __init__ (self):
@@ -18,26 +21,35 @@ class MainWindow (PyQt4.QtGui.QMainWindow, ui_main_window.Ui_MainWindow):
        # refresh the category list
        def repopulate_categories (self):
                recs = biaweb_db.get_categories (self.current_db)
-               if not recs:
+
+               # check with False because None is returned when no records exist
+               if recs == False:
                        PyQt4.QtGui.QMessageBox.critical (self, "Error", "SQLite 3 error in getting the categories")
-                       return
+                       return False
 
                self.categories.clear ()
                for (id, name, desc, stub) in recs:
                        qrow = PyQt4.QtGui.QTreeWidgetItem ([str(id), str(name)])
                        self.categories.addTopLevelItem (qrow)
 
+               # return true when successful
+               return True
+
        # refresh the articles list
        def repopulate_articles (self, catid=None):
                recs = biaweb_db.get_articles (self.current_db, catid)
-               if not recs:
+
+               # check with False because None is returned when no records exist
+               if recs == False:
                        PyQt4.QtGui.QMessageBox.critical (self, "Error", "SQLite 3 error in getting the articles")
-                       return
+                       return False
 
                self.articles.clear ()
                for item in recs:
                        qrow = PyQt4.QtGui.QTreeWidgetItem ([str(item[0]), str(item[1])])
                        self.articles.addTopLevelItem (qrow)
+               # return true when successful
+               return True
 
        # when the view is refreshed
        def onViewRefresh (self):
@@ -172,7 +184,7 @@ class MainWindow (PyQt4.QtGui.QMainWindow, ui_main_window.Ui_MainWindow):
                        catid = self.get_selected_item_id (self.categories)
                        self.repopulate_articles (catid)
 
-       # when configuration menu is activated
+       # when configuration menu is triggered
        def onConfiguration (self):
                if self.current_db is None:
                        PyQt4.QtGui.QMessageBox.critical (self, "Error",
@@ -210,6 +222,15 @@ class MainWindow (PyQt4.QtGui.QMainWindow, ui_main_window.Ui_MainWindow):
                                        PyQt4.QtGui.QMessageBox.critical (self, "Error",
                                                                                        "SQLite 3 error in updating configuration")
 
+       # when templates menu is triggered
+       def onTemplates (self):
+               if self.current_db is None:
+                       PyQt4.QtGui.QMessageBox.critical (self, "Error",
+                                                               "Cannot edit templates. You need to create or open a website first")
+               else:
+                       tdlg = tpld.TemplatesDialog (self, self.current_db)
+                       tdlg.exec_ ()
+
        # function to get the category or article ID from current selected item in a tree widget
        def get_selected_item_id (self, twidget):
                selitems = twidget.selectedItems ()
@@ -314,9 +335,21 @@ class MainWindow (PyQt4.QtGui.QMainWindow, ui_main_window.Ui_MainWindow):
                filename = PyQt4.QtGui.QFileDialog.getOpenFileName (self, "Open Site Database")
                if filename:
                        self.current_db = str (filename)
-                       self.setWindowTitle ("BiaWeb - " + self.current_db)
-                       self.repopulate_categories ()
-                       self.repopulate_articles ()
+
+                       # added to check whether categories are loaded successfully or not
+                       # if not, then reset the current_db to None
+                       loaded_cats = self.repopulate_categories ()
+                       loaded_arts = self.repopulate_articles ()
+                       # if failed in loading either categories or articles (note: checking against
+                       # False and not None)
+                       if loaded_cats == False or loaded_arts == False:
+                               self.current_db = None
+                               PyQt4.QtGui.QMessageBox.critical (self, "Error",
+                                       "SQLite 3 error in loading site database. This appears to be an invalid BiaWeb database")
+                       else:
+                               # set the window title to the database
+                               self.setWindowTitle ("BiaWeb - " + self.current_db)
+
 
        # file new menu is clicked
        def onFileNew (self):
@@ -347,6 +380,23 @@ class MainWindow (PyQt4.QtGui.QMainWindow, ui_main_window.Ui_MainWindow):
                                else:
                                        PyQt4.QtGui.QMessageBox.critical (self, "Error", "System or SQLite 3 error in creating database")
 
+       # when generate site menu is triggered
+       def onGenerateSite (self):
+               if self.current_db is None:
+                       PyQt4.QtGui.QMessageBox.critical (self, "Error",
+                                                               "Cannot generate site. You need to create or open a website first")
+               else:
+                       # run the generate site dialog
+                       gendlg = gend.GenerateDialog (self, self.current_db)
+                       gendlg.exec_ ()
+
+       # about menu is triggered
+       def onAbout (self):
+               PyQt4.QtGui.QMessageBox.about (self, "BiaWeb Qt",
+                       "<b>A static website/weblog content management system</b><br /><br />\
+Copyright &copy; 2010 <a href=\"http://www.harishankar.org\">Harishankar</a><br />\
+Licensed under GNU/GPL v3")
+
        # file quit is clicked
        def onFileQuit (self):
                sys.exit (0)