X-Git-Url: https://harishankar.org/repos/?p=getaclue.git;a=blobdiff_plain;f=player_mainwindow.py;fp=player_mainwindow.py;h=3ea54205e69e3f2abb2598161185791b3646eeee;hp=452410627514265538c31ae052adb98653fd4018;hb=e17ecb8ed14ad55b0ac2d1a45ae78b8452c8db18;hpb=30c57b62f1742d48bce4823ba13d60dd10176f93

diff --git a/player_mainwindow.py b/player_mainwindow.py
index 4524106..3ea5420 100644
--- a/player_mainwindow.py
+++ b/player_mainwindow.py
@@ -13,10 +13,23 @@ import crosswordpuzzle
 
 class MainWindow:
 	def gtk_main_quit (self, *args):
+		if self.puzzle:
+			dlg = gtk.MessageDialog (self.window, gtk.DIALOG_MODAL,
+					gtk.MESSAGE_QUESTION, gtk.BUTTONS_YES_NO,
+					"Puzzle is open. Are you sure you wish to quit?")
+			if dlg.run () == gtk.RESPONSE_NO:
+				dlg.destroy ()
+				return
+			dlg.destroy ()
+
 		gtk.main_quit ()
 
+	# callback for menu item quit activated event
+	def on_quit_activate (self, menuitem):
+		self.gtk_main_quit ()
+
 	# callback for puzzle grid mouse button release event
-	def on_puzzlegrid_button_release_event (self, drawarea, event):
+	def on_puzzlegrid_button_press_event (self, drawarea, event):
 		self.window.set_focus (drawarea)
 		return True
 
@@ -153,11 +166,42 @@ class MainWindow:
 							clue])
 
 	def open_file (self, file):
-		self.puzzle = cPickle.load (open (file, "rb"))
-		self.selected_row = 0
-		self.selected_col = 0
-		self.window.set_title ("GetAClue player - " + file)
-		self.load_clues ()
+		# try to open the file
+		try:
+			# load the puzzle
+			self.puzzle = cPickle.load (open (file, "rb"))
+			# assert that it is unfrozen otherwise raise frozen grid exception
+			self.puzzle.assert_frozen_grid ()
+
+			# set selected initial row and column to 0
+			self.selected_row = 0
+			self.selected_col = 0
+			self.window.set_title ("GetAClue player - " + file)
+			# load the clues
+			self.load_clues ()
+		# handle unpickling, and file errors
+		except (cPickle.UnpicklingError, IOError, OSError):
+			dlg = gtk.MessageDialog (self.window, gtk.DIALOG_MODAL,
+				gtk.MESSAGE_ERROR, gtk.BUTTONS_CLOSE,
+				"Invalid file. Cannot be loaded")
+			dlg.run ()
+			dlg.destroy ()
+		# if the puzzle has no words, then it cannot be played obviously
+		except crosswordpuzzle.NoWordsException:
+			self.puzzle = None
+			dlg = gtk.MessageDialog (self.window, gtk.DIALOG_MODAL,
+				gtk.MESSAGE_ERROR, gtk.BUTTONS_CLOSE,
+				"Word grid has no words. Cannot play")
+			dlg.run ()
+			dlg.destroy ()
+		# if the puzzle is not frozen then it cannot be played
+		except crosswordpuzzle.FrozenGridException:
+			self.puzzle = None
+			dlg = gtk.MessageDialog (self.window, gtk.DIALOG_MODAL,
+				gtk.MESSAGE_ERROR, gtk.BUTTONS_CLOSE,
+				"Word grid is not finalized/frozen. Cannot play")
+			dlg.run ()
+			dlg.destroy ()
 
 	def __init__ (self, file_to_play = None):
 		# load the user interface