guarding against calls in the destruction sequence of a window

[wxWidgets.git] / wxPython / wx / py / buffer.py

diff --git a/wxPython/wx/py/buffer.py b/wxPython/wx/py/buffer.py
index fa4282f3ac670e98cf505555ce90ee8ef0231606..0139ce8663e24ae5d02b6500aaa77a65c5e32a34 100644 (file)
--- a/wxPython/wx/py/buffer.py
+++ b/wxPython/wx/py/buffer.py
@@ -1,8 +1,138 @@
+"""Buffer class."""
 
-"""Renamer stub: provides a way to drop the wx prefix from wxPython objects."""
+__author__ = "Patrick K. O'Brien <pobrien@orbtech.com>"
+__cvsid__ = "$Id$"
+__revision__ = "$Revision$"[11:-2]
 
-from wx import _rename
-from wxPython.py import buffer
-_rename(globals(), buffer.__dict__, modulename='py.buffer')
-del buffer
-del _rename
+from interpreter import Interpreter
+import imp
+import os
+import sys
+
+import document
+
+
+class Buffer:
+    """Buffer class."""
+
+    id = 0
+
+    def __init__(self, filename=None):
+        """Create a Buffer instance."""
+        Buffer.id += 1
+        self.id = Buffer.id
+        self.interp = Interpreter(locals={})
+        self.name = ''
+        self.editors = {}
+        self.editor = None
+        self.modules = sys.modules.keys()
+        self.syspath = sys.path[:]
+        while True:
+            try:
+                self.syspath.remove('')
+            except ValueError:
+                break
+        while True:
+            try:
+                self.syspath.remove('.')
+            except ValueError:
+                break
+        self.open(filename)
+
+    def addEditor(self, editor):
+        """Add an editor."""
+        self.editor = editor
+        self.editors[editor.id] = editor
+
+    def hasChanged(self):
+        """Return True if text in editor has changed since last save."""
+        if self.editor:
+            return self.editor.hasChanged()
+        else:
+            return False
+
+    def new(self, filepath):
+        """New empty buffer."""
+        if not filepath:
+            return
+        if os.path.exists(filepath):
+            self.confirmed = self.overwriteConfirm(filepath)
+        else:
+            self.confirmed = True
+
+    def open(self, filename):
+        """Open file into buffer."""
+        self.doc = document.Document(filename)
+        self.name = self.doc.filename or ('Untitled:' + str(self.id))
+        self.modulename = self.doc.filebase
+        # XXX This should really make sure filedir is first item in syspath.
+        # XXX Or maybe this should be moved to the update namespace method.
+        if self.doc.filedir and self.doc.filedir not in self.syspath:
+            # To create the proper context for updateNamespace.
+            self.syspath.insert(0, self.doc.filedir)
+        if self.doc.filepath and os.path.exists(self.doc.filepath):
+            self.confirmed = True
+        if self.editor:
+            text = self.doc.read()
+            self.editor._setBuffer(buffer=self, text=text)
+
+    def overwriteConfirm(filepath):
+        """Confirm overwriting an existing file."""
+        return False
+
+    def save(self):
+        """Save buffer."""
+        filepath = self.doc.filepath
+        if not filepath:
+            return  # XXX Get filename
+        if not os.path.exists(filepath):
+            self.confirmed = True
+        if not self.confirmed:
+            self.confirmed = self.overwriteConfirm(filepath)
+        if self.confirmed:
+            self.doc.write(self.editor.getText())
+            if self.editor:
+                self.editor.setSavePoint()
+
+    def saveAs(self, filename):
+        """Save buffer."""
+        self.doc = document.Document(filename)
+        self.name = self.doc.filename
+        self.modulename = self.doc.filebase
+        self.save()
+
+    def updateNamespace(self):
+        """Update the namespace for autocompletion and calltips.
+
+        Return True if updated, False if there was an error."""
+        if not self.interp or not hasattr(self.editor, 'getText'):
+            return False
+        syspath = sys.path
+        sys.path = self.syspath
+        text = self.editor.getText()
+        text = text.replace('\r\n', '\n')
+        text = text.replace('\r', '\n')
+        name = self.modulename or self.name
+        module = imp.new_module(name)
+        newspace = module.__dict__.copy()
+        try:
+            try:
+                code = compile(text, name, 'exec')
+            except:
+                raise
+#                return False
+            try:
+                exec code in newspace
+            except:
+                raise
+#                return False
+            else:
+                # No problems, so update the namespace.
+                self.interp.locals.clear()
+                self.interp.locals.update(newspace)
+                return True
+        finally:
+            sys.path = syspath
+            for m in sys.modules.keys():
+                if m not in self.modules:
+                    del sys.modules[m]