1 files changed, 147 insertions, 0 deletions
diff --git a/Lib/idlelib/outwin.py b/Lib/idlelib/outwin.py
new file mode 100644
index 0000000000..f6d2915c62
--- /dev/null
+++ b/Lib/idlelib/outwin.py
@@ -0,0 +1,147 @@
+import re
+
+from tkinter import *
+import tkinter.messagebox as tkMessageBox
+
+from idlelib.editor import EditorWindow
+from idlelib import iomenu
+
+
+class OutputWindow(EditorWindow):
+
+    """An editor window that can serve as an output file.
+
+    Also the future base class for the Python shell window.
+    This class has no input facilities.
+    """
+
+    def __init__(self, *args):
+        EditorWindow.__init__(self, *args)
+        self.text.bind("<<goto-file-line>>", self.goto_file_line)
+
+    # Customize EditorWindow
+
+    def ispythonsource(self, filename):
+        # No colorization needed
+        return 0
+
+    def short_title(self):
+        return "Output"
+
+    def maybesave(self):
+        # Override base class method -- don't ask any questions
+        if self.get_saved():
+            return "yes"
+        else:
+            return "no"
+
+    # Act as output file
+
+    def write(self, s, tags=(), mark="insert"):
+        if isinstance(s, (bytes, bytes)):
+            s = s.decode(iomenu.encoding, "replace")
+        self.text.insert(mark, s, tags)
+        self.text.see(mark)
+        self.text.update()
+        return len(s)
+
+    def writelines(self, lines):
+        for line in lines:
+            self.write(line)
+
+    def flush(self):
+        pass
+
+    # Our own right-button menu
+
+    rmenu_specs = [
+        ("Cut", "<<cut>>", "rmenu_check_cut"),
+        ("Copy", "<<copy>>", "rmenu_check_copy"),
+        ("Paste", "<<paste>>", "rmenu_check_paste"),
+        (None, None, None),
+        ("Go to file/line", "<<goto-file-line>>", None),
+    ]
+
+    file_line_pats = [
+        # order of patterns matters
+        r'file "([^"]*)", line (\d+)',
+        r'([^\s]+)\((\d+)\)',
+        r'^(\s*\S.*?):\s*(\d+):',  # Win filename, maybe starting with spaces
+        r'([^\s]+):\s*(\d+):',     # filename or path, ltrim
+        r'^\s*(\S.*?):\s*(\d+):',  # Win abs path with embedded spaces, ltrim
+    ]
+
+    file_line_progs = None
+
+    def goto_file_line(self, event=None):
+        if self.file_line_progs is None:
+            l = []
+            for pat in self.file_line_pats:
+                l.append(re.compile(pat, re.IGNORECASE))
+            self.file_line_progs = l
+        # x, y = self.event.x, self.event.y
+        # self.text.mark_set("insert", "@%d,%d" % (x, y))
+        line = self.text.get("insert linestart", "insert lineend")
+        result = self._file_line_helper(line)
+        if not result:
+            # Try the previous line.  This is handy e.g. in tracebacks,
+            # where you tend to right-click on the displayed source line
+            line = self.text.get("insert -1line linestart",
+                                 "insert -1line lineend")
+            result = self._file_line_helper(line)
+            if not result:
+                tkMessageBox.showerror(
+                    "No special line",
+                    "The line you point at doesn't look like "
+                    "a valid file name followed by a line number.",
+                    parent=self.text)
+                return
+        filename, lineno = result
+        edit = self.flist.open(filename)
+        edit.gotoline(lineno)
+
+    def _file_line_helper(self, line):
+        for prog in self.file_line_progs:
+            match = prog.search(line)
+            if match:
+                filename, lineno = match.group(1, 2)
+                try:
+                    f = open(filename, "r")
+                    f.close()
+                    break
+                except OSError:
+                    continue
+        else:
+            return None
+        try:
+            return filename, int(lineno)
+        except TypeError:
+            return None
+
+# These classes are currently not used but might come in handy
+
+class OnDemandOutputWindow:
+
+    tagdefs = {
+        # XXX Should use IdlePrefs.ColorPrefs
+        "stdout":  {"foreground": "blue"},
+        "stderr":  {"foreground": "#007700"},
+    }
+
+    def __init__(self, flist):
+        self.flist = flist
+        self.owin = None
+
+    def write(self, s, tags, mark):
+        if not self.owin:
+            self.setup()
+        self.owin.write(s, tags, mark)
+
+    def setup(self):
+        self.owin = owin = OutputWindow(self.flist)
+        text = owin.text
+        for tag, cnf in self.tagdefs.items():
+            if cnf:
+                text.tag_configure(tag, **cnf)
+        text.tag_raise('sel')
+        self.write = self.owin.write