added prompts for kill-buffer and exit

--HG--
branch : pmacs2

application.py

@@ -397,7 +397,7 @@ class Application(object):
     def eval(self, s):
         return eval(s)
 
-    # the might run-loop!
+    # the mighty run-loop!
     def run(self):
         self.done = False
         while not self.done:
@@ -420,6 +420,13 @@ class Application(object):
             if self.error_timestamp is not None and ERROR_TIMEOUT > 0 and \
                 time.time() - self.error_timestamp > ERROR_TIMEOUT:
                 self.clear_error()
+
+        # clear the error line; it might look confusing to the user
+        try:
+            self.win.addstr(self.y-1, 0, ' ' * self.x)
+        except:
+            pass
+        self.win.refresh()
         return
 
     # highlighting

method.py

@@ -229,16 +229,34 @@ class KillBuffer(Method):
                      default=default.current_buffer)]
     def _execute(self, w, **vargs):
         name = vargs['buffername']
-        app = w.application
-        assert name in app.bufferlist.buffer_names, "Buffer %r does not exist" % name
+        a  = w.application
+        assert name in a.bufferlist.buffer_names, "Buffer %r does not exist" % name
         assert name != '*Scratch*', "Can't kill scratch buffer"
-        b = app.bufferlist.buffer_names[name]
-        if not self.force:
-            assert not b.changed(), "Buffer %r has been modified" % (name)
-        if app.bufferlist.is_buffer_visible(b):
-            app.bufferlist.set_slot(app.active_slot, app.bufferlist.hidden_buffers[0])
-        app.bufferlist.remove_buffer(b)
+        self._to_kill    = a.bufferlist.buffer_names[name]
+        self._old_window = w
+        if self.force or not self._to_kill.changed():
+            self._doit()
+        else:
+            self._prompt = "Buffer has unsaved changes; kill anyway? "
+            a.open_mini_buffer(self._prompt, self._callback)
+    def _doit(self):
+        a = self._old_window.application
+        b = self._to_kill
+        if a.bufferlist.is_buffer_visible(b):
+            a.bufferlist.set_slot(a.active_slot, a.bufferlist.hidden_buffers[0])
+        a.bufferlist.remove_buffer(b)
         b.close()
+    def _callback(self, v):
+        a = self._old_window.application
+        if v == 'yes':
+            self._doit()
+            a.close_mini_buffer()
+        elif v == 'no':
+            a.close_mini_buffer()
+        else:
+            a.close_mini_buffer()
+            a.set_error('Please type "yes" or "no"')
+
 class ForceKillBuffer(KillBuffer):
     force=True
     args = [Argument('buffername', datatype="buffer", prompt="Force Kill Buffer: ",
@@ -297,20 +315,35 @@ class TransposeWords(Method):
     '''Switch the place of the two words nearest the cursor'''
     pass
 
-# exit/exit2
+# you wanna quit right?
 class Exit(Method):
     '''Exit the program, unless there are unsaved changes'''
     def _execute(self, w, **vargs):
+        a = w.application
+        assert a.mini_buffer_is_open() is False, "Recursive minibuffer antics"
+
+        changed = False
         for b in w.application.bufferlist.buffers:
-            if b.changed():
-                s = "Buffer %s was modified" % b.name()
-                w.application.set_error(s)
-                return
-        w.application.exit()
-class Exit2(Method):
-    '''Exit the program, discarding unsaved changes'''
-    def _execute(self, w, **vargs):
-        w.application.exit()
+            changed = b.changed()
+            if changed:
+                break
+        if not changed:
+            w.application.exit()
+            return
+        else:
+            self._old_window = w
+            self._prompt     = "There are buffers with unsaved changes; exit? "
+            a.open_mini_buffer(self._prompt, self._callback)
+
+    def _callback(self, v):
+        a = self._old_window.application
+        if v == 'yes':
+            a.exit()
+        a.close_mini_buffer()
+        if v == 'no':
+            return
+        a.open_mini_buffer(self._prompt, self._callback)
+        a.set_error('Please type "yes" or "no"')
 
 # insert text
 class InsertString(Method):

mode2.py

@@ -127,7 +127,6 @@ class Fundamental(Handler):
         self.add_bindings('replace', ('M-%',))
         self.add_bindings('open-file', ('C-x C-f',))
         self.add_bindings('kill-buffer', ('C-x k',))
-        self.add_bindings('force-kill-buffer', ('C-x K',))
         self.add_bindings('list-buffers', ('C-x C-b',))
         self.add_bindings('meta-x', ('M-x',))
         self.add_bindings('wrap-line', ('M-q',))
@@ -136,7 +135,6 @@ class Fundamental(Handler):
         self.add_bindings('save-buffer-as', ('C-x C-w',))
         self.add_bindings('relex-buffer', ('M-r',))
         self.add_bindings('exit', ('C-x C-c',))
-        self.add_bindings('exit2', ('C-c C-c',))
         self.add_bindings('split-window', ('C-x s',))
         self.add_bindings('unsplit-window', ('C-u s',))
         self.add_bindings('toggle-window', ('C-x o',))