Initial revision

Lib/idlelib/FileList.py

@@ -0,0 +1,150 @@
+# changes by dscherer@cmu.edu
+#   - FileList.open() takes an optional 3rd parameter action, which is
+#       called instead of creating a new EditorWindow.  This enables
+#       things like 'open in same window'.
+
+import os
+from Tkinter import *
+import tkMessageBox
+
+import WindowList
+
+#$ event <<open-new-window>>
+#$ win <Control-n>
+#$ unix <Control-x><Control-n>
+
+# (This is labeled as 'Exit'in the File menu)
+#$ event <<close-all-windows>>
+#$ win <Control-q>
+#$ unix <Control-x><Control-c>
+
+class FileList:
+
+    from EditorWindow import EditorWindow
+    EditorWindow.Toplevel = WindowList.ListedToplevel # XXX Patch it!
+
+    def __init__(self, root):
+        self.root = root
+        self.dict = {}
+        self.inversedict = {}
+        self.vars = {} # For EditorWindow.getrawvar (shared Tcl variables)
+
+
+    def goodname(self, filename):
+            filename = self.canonize(filename)
+            key = os.path.normcase(filename)
+            if self.dict.has_key(key):
+                edit = self.dict[key]
+                filename = edit.io.filename or filename
+            return filename
+
+    def open(self, filename, action=None):
+        assert filename
+        filename = self.canonize(filename)
+        if os.path.isdir(filename):
+            tkMessageBox.showerror(
+                "Is A Directory",
+                "The path %s is a directory." % `filename`,
+                master=self.root)
+            return None
+        key = os.path.normcase(filename)
+        if self.dict.has_key(key):
+            edit = self.dict[key]
+            edit.wakeup()
+            return edit
+        if not os.path.exists(filename):
+            tkMessageBox.showinfo(
+                "New File",
+                "Opening non-existent file %s" % `filename`,
+                master=self.root)
+        if action is None:
+            return self.EditorWindow(self, filename, key)
+        else:
+            return action(filename)
+
+    def new(self):
+        return self.EditorWindow(self)
+
+    def new_callback(self, event):
+        self.new()
+        return "break"
+
+    def close_all_callback(self, event):
+        for edit in self.inversedict.keys():
+            reply = edit.close()
+            if reply == "cancel":
+                break
+        return "break"
+
+    def close_edit(self, edit):
+        try:
+            key = self.inversedict[edit]
+        except KeyError:
+            print "Don't know this EditorWindow object.  (close)"
+            return
+        if key:
+            del self.dict[key]
+        del self.inversedict[edit]
+        if not self.inversedict:
+            self.root.quit()
+
+    def filename_changed_edit(self, edit):
+        edit.saved_change_hook()
+        try:
+            key = self.inversedict[edit]
+        except KeyError:
+            print "Don't know this EditorWindow object.  (rename)"
+            return
+        filename = edit.io.filename
+        if not filename:
+            if key:
+                del self.dict[key]
+            self.inversedict[edit] = None
+            return
+        filename = self.canonize(filename)
+        newkey = os.path.normcase(filename)
+        if newkey == key:
+            return
+        if self.dict.has_key(newkey):
+            conflict = self.dict[newkey]
+            self.inversedict[conflict] = None
+            tkMessageBox.showerror(
+                "Name Conflict",
+                "You now have multiple edit windows open for %s" % `filename`,
+                master=self.root)
+        self.dict[newkey] = edit
+        self.inversedict[edit] = newkey
+        if key:
+            try:
+                del self.dict[key]
+            except KeyError:
+                pass
+
+    def canonize(self, filename):
+        if not os.path.isabs(filename):
+            try:
+                pwd = os.getcwd()
+            except os.error:
+                pass
+            else:
+                filename = os.path.join(pwd, filename)
+        return os.path.normpath(filename)
+
+
+def test():
+    from EditorWindow import fixwordbreaks
+    import sys
+    root = Tk()
+    fixwordbreaks(root)
+    root.withdraw()
+    flist = FileList(root)
+    if sys.argv[1:]:
+        for filename in sys.argv[1:]:
+            flist.open(filename)
+    else:
+        flist.new()
+    if flist.inversedict:
+        root.mainloop()
+
+if __name__ == '__main__':
+    test()