import W
import sys
from Carbon import Qd

__version__ = "0.2"
__author__ = "jvr"

class _modulebrowser:

    def __init__(self):
        self.editmodules = []
        self.modules = []
        self.window = W.Window((210, 1000), "Module Browser", minsize = (210, 160), maxsize = (340, 20000))

        self.window.openbutton = W.Button((10, 8, 90, 16), "Open", self.openbuttonhit)
        self.window.browsebutton = W.Button((110, 8, 90, 16), "Browse\xc9", self.browsebuttonhit)
        self.window.reloadbutton = W.Button((10, 32, 90, 16), "Reload", self.reloadbuttonhit)
        self.window.openotherbutton = W.Button((110, 32, 90, 16), "Open other\xc9", self.openother)

        self.window.openbutton.enable(0)
        self.window.reloadbutton.enable(0)
        self.window.browsebutton.enable(0)
        self.window.setdefaultbutton(self.window.browsebutton)

        self.window.bind("cmdr", self.window.reloadbutton.push)
        self.window.bind("cmdb", self.window.browsebutton.push)

        self.window.bind("<activate>", self.activate)
        self.window.bind("<close>", self.close)

        self.window.list = W.List((-1, 56, 1, -14), [], self.listhit)

        self.window.open()
        self.checkbuttons()

    def close(self):
        global _browser
        _browser = None

    def activate(self, onoff):
        if onoff:
            self.makelist()

    def listhit(self, isdbl):
        self.checkbuttons()
        if isdbl:
            if self.window._defaultbutton:
                self.window._defaultbutton.push()

    def checkbuttons(self):
        sel = self.window.list.getselection()
        if sel:
            for i in sel:
                if self.editmodules[i]:
                    self.window.openbutton.enable(1)
                    self.window.reloadbutton.enable(1)
                    self.window.setdefaultbutton(self.window.openbutton)
                    break
            else:
                self.window.openbutton.enable(0)
                self.window.reloadbutton.enable(0)
                self.window.setdefaultbutton(self.window.browsebutton)
            self.window.browsebutton.enable(1)
        else:
            #self.window.setdefaultbutton(self.window.browsebutton)
            self.window.openbutton.enable(0)
            self.window.reloadbutton.enable(0)
            self.window.browsebutton.enable(0)

    def openbuttonhit(self):
        import imp
        sel = self.window.list.getselection()
        W.SetCursor("watch")
        for i in sel:
            modname = self.window.list[i]
            try:
                self.openscript(sys.modules[modname].__file__, modname)
            except IOError:
                try:
                    file, path, description = imp.find_module(modname)
                except ImportError:
                    W.SetCursor("arrow")
                    W.Message("Can't find file for module '%s'."
                                    % modname)
                else:
                    self.openscript(path, modname)

    def openscript(self, path, modname):
        import os
        if path[-3:] == '.py':
            W.getapplication().openscript(path, modname=modname)
        elif path[-4:] in ['.pyc', '.pyo']:
            W.getapplication().openscript(path[:-1], modname=modname)
        else:
            W.Message("Can't edit '%s'; it might be a shared library or a .pyc file."
                            % modname)

    def openother(self):
        import imp
        import EasyDialogs

        modname = EasyDialogs.AskString("Open module:")
        if modname:
            try:
                file, path, description = imp.find_module(modname)
            except ImportError:
                if modname in sys.builtin_module_names:
                    alerttext = "'%s' is a builtin module, which you can't edit." % modname
                else:
                    alerttext = "No module named '%s'." % modname
                raise W.AlertError, alerttext
            self.openscript(path, modname)

    def reloadbuttonhit(self):
        sel = self.window.list.getselection()
        W.SetCursor("watch")
        for i in sel:
            mname = self.window.list[i]
            m = sys.modules[mname]
            # Set the __name__ attribute of the module to its real name.
            # reload() complains if it's __main__, which is true
            # when it recently has been run as a script with "Run as __main__"
            # enabled.
            m.__name__ = mname
            reload(m)

    def browsebuttonhit(self):
        sel = self.window.list.getselection()
        if not sel:
            return
        import PyBrowser
        for i in sel:
            PyBrowser.Browser(sys.modules[self.window.list[i]])

    def makelist(self):
        editmodules, modules = getmoduleslist()
        if modules == self.modules:
            return
        self.editmodules, self.modules = editmodules, modules
        self.window.list.setdrawingmode(0)
        sel = self.window.list.getselectedobjects()
        self.window.list.set(self.modules)
        self.window.list.setselectedobjects(sel)
        self.window.list.setdrawingmode(1)


def getmoduleslist():
    import PyBrowser        # for caselesssort function
    moduleitems = sys.modules.items()
    moduleitems = filter(lambda (name, module): module is not None, moduleitems)
    modules = map(lambda (name, module): name, moduleitems)
    modules = PyBrowser.caselesssort(modules)
    editmodules = []
    sysmodules = sys.modules
    modulesappend = editmodules.append
    for m in modules:
        module = sysmodules[m]
        try:
            if sysmodules[m].__file__[-3:] == '.py' or \
                            sysmodules[m].__file__[-4:] in ['.pyc', '.pyo']:
                modulesappend(1)
            else:
                modulesappend(0)
        except AttributeError:
            modulesappend(0)
    return editmodules, modules



_browser = None

def ModuleBrowser():
    global _browser
    if _browser is not None:
        _browser.window.select()
    else:
        _browser = _modulebrowser()