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"""Primitive class browser.
XXX TO DO:
- generalize the scrolling listbox with some behavior into a base class
- add popup menu with more options (e.g. doc strings, base classes, imports)
- show function argument list (have to do pattern matching on source)
- should the classes and methods lists also be in the module's menu bar?
"""
import string
import pyclbr
from Tkinter import *
import tkMessageBox
class ClassBrowser:
def __init__(self, flist, name):
root = flist.root
try:
dict = pyclbr.readmodule(name)
except ImportError, msg:
tkMessageBox.showerror("Import error", str(msg), parent=root)
return
if not dict:
tkMessageBox.showerror("Nothing to browse",
"Module %s defines no classes" % name, parent=root)
return
self.flist = flist
self.dict = dict
self.root = root
self.top = top = Toplevel(root)
self.top.protocol("WM_DELETE_WINDOW", self.close)
self.leftframe = leftframe = Frame(top)
self.leftframe.pack(side="left", fill="both", expand=1)
top.wm_title("Class browser")
# Create help label
self.helplabel = Label(leftframe,
text="Classes in module %s" % name,
borderwidth=2, relief="groove")
self.helplabel.pack(fill="x")
# Create top frame, with scrollbar and listbox
self.topframe = Frame(leftframe)
self.topframe.pack(fill="both", expand=1)
self.vbar = Scrollbar(self.topframe, name="vbar")
self.vbar.pack(side="right", fill="y")
self.listbox = Listbox(self.topframe, exportselection=0,
takefocus=1, width=30)
self.listbox.pack(expand=1, fill="both")
# Tie listbox and scrollbar together
self.vbar["command"] = self.listbox.yview
self.listbox["yscrollcommand"] = self.vbar.set
# Bind events to the list box
self.listbox.bind("<ButtonRelease-1>", self.click_event)
self.listbox.bind("<Double-ButtonRelease-1>", self.double_click_event)
##self.listbox.bind("<ButtonPress-3>", self.popup_event)
self.listbox.bind("<Key-Up>", self.up_event)
self.listbox.bind("<Key-Down>", self.down_event)
# Load the classes
self.loadclasses(dict, name)
def close(self):
self.top.destroy()
def loadclasses(self, dict, module):
items = []
for key, value in dict.items():
if value.module == module:
items.append((value.lineno, key, value))
items.sort()
l = self.listbox
for lineno, key, value in items:
s = key
if value.super:
super = []
for sup in value.super:
name = sup.name
if sup.module != value.module:
name = "%s.%s" % (sup.module, name)
super.append(name)
s = s + "(%s)" % string.join(super, ", ")
l.insert("end", s)
l.focus_set()
l.selection_clear(0, "end")
if self.botframe:
self.botframe.destroy()
self.botframe = None
self.methodviewer = None
def click_event(self, event):
self.listbox.activate("@%d,%d" % (event.x, event.y))
index = self.listbox.index("active")
self.show_methods(index)
def double_click_event(self, event):
self.listbox.activate("@%d,%d" % (event.x, event.y))
index = self.listbox.index("active")
self.show_source(index)
def up_event(self, event):
index = self.listbox.index("active") - 1
if index < 0:
self.top.bell()
return "break"
self.show_methods(index)
return "break"
def down_event(self, event):
index = self.listbox.index("active") + 1
if index >= self.listbox.index("end"):
self.top.bell()
return "break"
self.show_methods(index)
return "break"
def show_source(self, index):
name = self.listbox.get(index)
i = string.find(name, '(')
if i >= 0:
name = name[:i]
cl = self.dict[name]
edit = self.flist.open(cl.file)
edit.gotoline(cl.lineno)
botframe = None
methodviewer = None
def show_methods(self, index):
self.listbox.selection_clear(0, "end")
self.listbox.selection_set(index)
self.listbox.activate(index)
self.listbox.see(index)
self.listbox.focus_set()
name = self.listbox.get(index)
i = string.find(name, '(')
if i >= 0:
name = name[:i]
cl = self.dict[name]
if not self.botframe:
self.botframe = Frame(self.top)
self.botframe.pack(expand=1, fill="both")
if not self.methodviewer:
self.methodviewer = MethodViewer(self.botframe, self.flist)
self.methodviewer.loadmethods(cl)
class MethodViewer:
# XXX There's a pattern emerging here...
def __init__(self, frame, flist):
self.frame = frame
self.flist = flist
# Create help label
self.helplabel = Label(frame,
text="Methods", borderwidth=2, relief="groove")
self.helplabel.pack(fill="x")
# Create top frame, with scrollbar and listbox
self.topframe = Frame(frame)
self.topframe.pack(fill="both", expand=1)
self.vbar = Scrollbar(self.topframe, name="vbar")
self.vbar.pack(side="right", fill="y")
self.listbox = Listbox(self.topframe, exportselection=0,
takefocus=1, width=30)
self.listbox.pack(expand=1, fill="both")
# Tie listbox and scrollbar together
self.vbar["command"] = self.listbox.yview
self.listbox["yscrollcommand"] = self.vbar.set
# Bind events to the list box
self.listbox.bind("<ButtonRelease-1>", self.click_event)
self.listbox.bind("<Double-ButtonRelease-1>", self.double_click_event)
##self.listbox.bind("<ButtonPress-3>", self.popup_event)
self.listbox.bind("<Key-Up>", self.up_event)
self.listbox.bind("<Key-Down>", self.down_event)
classinfo = None
def loadmethods(self, cl):
self.classinfo = cl
self.helplabel.config(text="Methods of class %s" % cl.name)
l = self.listbox
l.delete(0, "end")
l.selection_clear(0, "end")
items = []
for name, lineno in cl.methods.items():
items.append((lineno, name))
items.sort()
for item, name in items:
l.insert("end", name)
def click_event(self, event):
pass
def double_click_event(self, event):
self.listbox.activate("@%d,%d" % (event.x, event.y))
index = self.listbox.index("active")
self.show_source(index)
def up_event(self, event):
pass
def down_event(self, event):
pass
def show_source(self, index):
name = self.listbox.get(index)
i = string.find(name, '(')
if i >= 0:
name = name[:i]
edit = self.flist.open(self.classinfo.file)
edit.gotoline(self.classinfo.methods[name])
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