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# This is a port of the Vista SDK "FolderView" sample, and associated
# notes at http://shellrevealed.com/blogs/shellblog/archive/2007/03/15/Shell-Namespace-Extension_3A00_-Creating-and-Using-the-System-Folder-View-Object.aspx
# A key difference to shell_view.py is that this version uses the default
# IShellView provided by the shell (via SHCreateShellFolderView) rather
# than our own.
# XXX - sadly, it doesn't work quite like the original sample. Oh well,
# another day...
import os
import pickle
import random
import sys
import commctrl
import pythoncom
import win32api
import win32con
import winerror
import winxpgui as win32gui # the needs vista, let alone xp!
from win32com.axcontrol import axcontrol # IObjectWithSite
from win32com.propsys import propsys
from win32com.server.exception import COMException
from win32com.server.util import NewEnum as _NewEnum, wrap as _wrap
from win32com.shell import shell, shellcon
from win32com.util import IIDToInterfaceName
GUID = pythoncom.MakeIID
# If set, output spews to the win32traceutil collector...
debug = 0
# wrap a python object in a COM pointer
def wrap(ob, iid=None):
return _wrap(ob, iid, useDispatcher=(debug > 0))
def NewEnum(seq, iid):
return _NewEnum(seq, iid=iid, useDispatcher=(debug > 0))
# The sample makes heavy use of "string ids" (ie, integer IDs defined in .h
# files, loaded at runtime from a (presumably localized) DLL. We cheat.
_sids = {} # strings, indexed bystring_id,
def LoadString(sid):
return _sids[sid]
# fn to create a unique string ID
_last_ids = 0
def _make_ids(s):
global _last_ids
_last_ids += 1
_sids[_last_ids] = s
return _last_ids
# These strings are what the user sees and would be localized.
# XXX - its possible that the shell might persist these values, so
# this scheme wouldn't really be suitable in a real ap.
IDS_UNSPECIFIED = _make_ids("unspecified")
IDS_SMALL = _make_ids("small")
IDS_MEDIUM = _make_ids("medium")
IDS_LARGE = _make_ids("large")
IDS_CIRCLE = _make_ids("circle")
IDS_TRIANGLE = _make_ids("triangle")
IDS_RECTANGLE = _make_ids("rectangle")
IDS_POLYGON = _make_ids("polygon")
IDS_DISPLAY = _make_ids("Display")
IDS_DISPLAY_TT = _make_ids("Display the item.")
IDS_SETTINGS = _make_ids("Settings")
IDS_SETTING1 = _make_ids("Setting 1")
IDS_SETTING2 = _make_ids("Setting 2")
IDS_SETTING3 = _make_ids("Setting 3")
IDS_SETTINGS_TT = _make_ids("Modify settings.")
IDS_SETTING1_TT = _make_ids("Modify setting 1.")
IDS_SETTING2_TT = _make_ids("Modify setting 2.")
IDS_SETTING3_TT = _make_ids("Modify setting 3.")
IDS_LESSTHAN5 = _make_ids("Less Than 5")
IDS_5ORGREATER = _make_ids("Five or Greater")
del _make_ids, _last_ids
# Other misc resource stuff
IDI_ICON1 = 100
IDI_SETTINGS = 101
# The sample defines a number of "category ids". Each one gets
# its own GUID.
CAT_GUID_NAME = GUID("{de094c9d-c65a-11dc-ba21-005056c00008}")
CAT_GUID_SIZE = GUID("{de094c9e-c65a-11dc-ba21-005056c00008}")
CAT_GUID_SIDES = GUID("{de094c9f-c65a-11dc-ba21-005056c00008}")
CAT_GUID_LEVEL = GUID("{de094ca0-c65a-11dc-ba21-005056c00008}")
# The next category guid is NOT based on a column (see
# ViewCategoryProvider::EnumCategories()...)
CAT_GUID_VALUE = "{de094ca1-c65a-11dc-ba21-005056c00008}"
GUID_Display = GUID("{4d6c2fdd-c689-11dc-ba21-005056c00008}")
GUID_Settings = GUID("{4d6c2fde-c689-11dc-ba21-005056c00008}")
GUID_Setting1 = GUID("{4d6c2fdf-c689-11dc-ba21-005056c00008}")
GUID_Setting2 = GUID("{4d6c2fe0-c689-11dc-ba21-005056c00008}")
GUID_Setting3 = GUID("{4d6c2fe1-c689-11dc-ba21-005056c00008}")
# Hrm - not sure what to do about the std keys.
# Probably need a simple parser for propkey.h
PKEY_ItemNameDisplay = ("{B725F130-47EF-101A-A5F1-02608C9EEBAC}", 10)
PKEY_PropList_PreviewDetails = ("{C9944A21-A406-48FE-8225-AEC7E24C211B}", 8)
# Not sure what the "3" here refers to - docs say PID_FIRST_USABLE (2) be
# used. Presumably it is the 'propID' value in the .propdesc file!
# note that the following GUIDs are also references in the .propdesc file
PID_SOMETHING = 3
# These are our 'private' PKEYs
# Col 2, name="Sample.AreaSize"
PKEY_Sample_AreaSize = ("{d6f5e341-c65c-11dc-ba21-005056c00008}", PID_SOMETHING)
# Col 3, name="Sample.NumberOfSides"
PKEY_Sample_NumberOfSides = ("{d6f5e342-c65c-11dc-ba21-005056c00008}", PID_SOMETHING)
# Col 4, name="Sample.DirectoryLevel"
PKEY_Sample_DirectoryLevel = ("{d6f5e343-c65c-11dc-ba21-005056c00008}", PID_SOMETHING)
# We construct a PIDL from a pickle of a dict - turn it back into a
# dict (we should *never* be called with a PIDL that the last elt is not
# ours, so it is safe to assume we created it (assume->"ass" = "u" + "me" :)
def pidl_to_item(pidl):
# Note that only the *last* elt in the PIDL is certainly ours,
# but it contains everything we need encoded as a dict.
return pickle.loads(pidl[-1])
# Start of msdn sample port...
# make_item_enum replaces the sample's entire EnumIDList.cpp :)
def make_item_enum(level, flags):
pidls = []
nums = """zero one two three four five size seven eight nine ten""".split()
for i, name in enumerate(nums):
size = random.randint(0, 255)
sides = 1
while sides in [1, 2]:
sides = random.randint(0, 5)
is_folder = (i % 2) != 0
# check the flags say to include it.
# (This seems strange; if you ask the same folder for, but appear
skip = False
if not (flags & shellcon.SHCONTF_STORAGE):
if is_folder:
skip = not (flags & shellcon.SHCONTF_FOLDERS)
else:
skip = not (flags & shellcon.SHCONTF_NONFOLDERS)
if not skip:
data = dict(
name=name, size=size, sides=sides, level=level, is_folder=is_folder
)
pidls.append([pickle.dumps(data)])
return NewEnum(pidls, shell.IID_IEnumIDList)
# start of Utils.cpp port
def DisplayItem(shell_item_array, hwnd_parent=0):
# Get the first ShellItem and display its name
if shell_item_array is None:
msg = "You must select something!"
else:
si = shell_item_array.GetItemAt(0)
name = si.GetDisplayName(shellcon.SIGDN_NORMALDISPLAY)
msg = "%d items selected, first is %r" % (shell_item_array.GetCount(), name)
win32gui.MessageBox(hwnd_parent, msg, "Hello", win32con.MB_OK)
# end of Utils.cpp port
# start of sample's FVCommands.cpp port
class Command:
def __init__(self, guid, ids, ids_tt, idi, flags, callback, children):
self.guid = guid
self.ids = ids
self.ids_tt = ids_tt
self.idi = idi
self.flags = flags
self.callback = callback
self.children = children
assert not children or isinstance(children[0], Command)
def tuple(self):
return (
self.guid,
self.ids,
self.ids_tt,
self.idi,
self.flags,
self.callback,
self.children,
)
# command callbacks - called back directly by us - see ExplorerCommand.Invoke
def onDisplay(items, bindctx):
DisplayItem(items)
def onSetting1(items, bindctx):
win32gui.MessageBox(0, LoadString(IDS_SETTING1), "Hello", win32con.MB_OK)
def onSetting2(items, bindctx):
win32gui.MessageBox(0, LoadString(IDS_SETTING2), "Hello", win32con.MB_OK)
def onSetting3(items, bindctx):
win32gui.MessageBox(0, LoadString(IDS_SETTING3), "Hello", win32con.MB_OK)
taskSettings = [
Command(
GUID_Setting1, IDS_SETTING1, IDS_SETTING1_TT, IDI_SETTINGS, 0, onSetting1, None
),
Command(
GUID_Setting2, IDS_SETTING2, IDS_SETTING2_TT, IDI_SETTINGS, 0, onSetting2, None
),
Command(
GUID_Setting3, IDS_SETTING3, IDS_SETTING3_TT, IDI_SETTINGS, 0, onSetting3, None
),
]
tasks = [
Command(GUID_Display, IDS_DISPLAY, IDS_DISPLAY_TT, IDI_ICON1, 0, onDisplay, None),
Command(
GUID_Settings,
IDS_SETTINGS,
IDS_SETTINGS_TT,
IDI_SETTINGS,
shellcon.ECF_HASSUBCOMMANDS,
None,
taskSettings,
),
]
class ExplorerCommandProvider:
_com_interfaces_ = [shell.IID_IExplorerCommandProvider]
_public_methods_ = shellcon.IExplorerCommandProvider_Methods
def GetCommands(self, site, iid):
items = [wrap(ExplorerCommand(t)) for t in tasks]
return NewEnum(items, shell.IID_IEnumExplorerCommand)
class ExplorerCommand:
_com_interfaces_ = [shell.IID_IExplorerCommand]
_public_methods_ = shellcon.IExplorerCommand_Methods
def __init__(self, cmd):
self.cmd = cmd
# The sample also appears to ignore the pidl args!?
def GetTitle(self, pidl):
return LoadString(self.cmd.ids)
def GetToolTip(self, pidl):
return LoadString(self.cmd.ids_tt)
def GetIcon(self, pidl):
# Return a string of the usual "dll,resource_id" format
# todo - just return any ".ico that comes with python" + ",0" :)
raise COMException(hresult=winerror.E_NOTIMPL)
def GetState(self, shell_items, slow_ok):
return shellcon.ECS_ENABLED
def GetFlags(self):
return self.cmd.flags
def GetCanonicalName(self):
return self.cmd.guid
def Invoke(self, items, bind_ctx):
# If no function defined - just return S_OK
if self.cmd.callback:
self.cmd.callback(items, bind_ctx)
else:
print("No callback for command ", LoadString(self.cmd.ids))
def EnumSubCommands(self):
if not self.cmd.children:
return None
items = [wrap(ExplorerCommand(c)) for c in self.cmd.children]
return NewEnum(items, shell.IID_IEnumExplorerCommand)
# end of sample's FVCommands.cpp port
# start of sample's Category.cpp port
class FolderViewCategorizer:
_com_interfaces_ = [shell.IID_ICategorizer]
_public_methods_ = shellcon.ICategorizer_Methods
description = None # subclasses should set their own
def __init__(self, shell_folder):
self.sf = shell_folder
# Determines the relative order of two items in their item identifier lists.
def CompareCategory(self, flags, cat1, cat2):
return cat1 - cat2
# Retrieves the name of a categorizer, such as "Group By Device
# Type", that can be displayed in the user interface.
def GetDescription(self, cch):
return self.description
# Retrieves information about a category, such as the default
# display and the text to display in the user interface.
def GetCategoryInfo(self, catid):
# Note: this isn't always appropriate! See overrides below
return 0, str(catid) # ????
class FolderViewCategorizer_Name(FolderViewCategorizer):
description = "Alphabetical"
def GetCategory(self, pidls):
ret = []
for pidl in pidls:
val = self.sf.GetDetailsEx(pidl, PKEY_ItemNameDisplay)
ret.append(val)
return ret
class FolderViewCategorizer_Size(FolderViewCategorizer):
description = "Group By Size"
def GetCategory(self, pidls):
ret = []
for pidl in pidls:
# Why don't we just get the size of the PIDL?
val = self.sf.GetDetailsEx(pidl, PKEY_Sample_AreaSize)
val = int(val) # it probably came in a VT_BSTR variant
if val < 255 // 3:
cid = IDS_SMALL
elif val < 2 * 255 // 3:
cid = IDS_MEDIUM
else:
cid = IDS_LARGE
ret.append(cid)
return ret
def GetCategoryInfo(self, catid):
return 0, LoadString(catid)
class FolderViewCategorizer_Sides(FolderViewCategorizer):
description = "Group By Sides"
def GetCategory(self, pidls):
ret = []
for pidl in pidls:
val = self.sf.GetDetailsEx(pidl, PKEY_ItemNameDisplay)
if val == 0:
cid = IDS_CIRCLE
elif val == 3:
cid = IDS_TRIANGLE
elif val == 4:
cid = IDS_RECTANGLE
elif val == 5:
cid = IDS_POLYGON
else:
cid = IDS_UNSPECIFIED
ret.append(cid)
return ret
def GetCategoryInfo(self, catid):
return 0, LoadString(catid)
class FolderViewCategorizer_Value(FolderViewCategorizer):
description = "Group By Value"
def GetCategory(self, pidls):
ret = []
for pidl in pidls:
val = self.sf.GetDetailsEx(pidl, PKEY_ItemNameDisplay)
if val in "one two three four".split():
ret.append(IDS_LESSTHAN5)
else:
ret.append(IDS_5ORGREATER)
return ret
def GetCategoryInfo(self, catid):
return 0, LoadString(catid)
class FolderViewCategorizer_Level(FolderViewCategorizer):
description = "Group By Value"
def GetCategory(self, pidls):
return [
self.sf.GetDetailsEx(pidl, PKEY_Sample_DirectoryLevel) for pidl in pidls
]
class ViewCategoryProvider:
_com_interfaces_ = [shell.IID_ICategoryProvider]
_public_methods_ = shellcon.ICategoryProvider_Methods
def __init__(self, shell_folder):
self.shell_folder = shell_folder
def CanCategorizeOnSCID(self, pkey):
return pkey in [
PKEY_ItemNameDisplay,
PKEY_Sample_AreaSize,
PKEY_Sample_NumberOfSides,
PKEY_Sample_DirectoryLevel,
]
# Creates a category object.
def CreateCategory(self, guid, iid):
if iid == shell.IID_ICategorizer:
if guid == CAT_GUID_NAME:
klass = FolderViewCategorizer_Name
elif guid == CAT_GUID_SIDES:
klass = FolderViewCategorizer_Sides
elif guid == CAT_GUID_SIZE:
klass = FolderViewCategorizer_Size
elif guid == CAT_GUID_VALUE:
klass = FolderViewCategorizer_Value
elif guid == CAT_GUID_LEVEL:
klass = FolderViewCategorizer_Level
else:
raise COMException(hresult=winerror.E_INVALIDARG)
return wrap(klass(self.shell_folder))
raise COMException(hresult=winerror.E_NOINTERFACE)
# Retrieves the enumerator for the categories.
def EnumCategories(self):
# These are additional categories beyond the columns
seq = [CAT_GUID_VALUE]
return NewEnum(seq, pythoncom.IID_IEnumGUID)
# Retrieves a globally unique identifier (GUID) that represents
# the categorizer to use for the specified Shell column.
def GetCategoryForSCID(self, scid):
if scid == PKEY_ItemNameDisplay:
guid = CAT_GUID_NAME
elif scid == PKEY_Sample_AreaSize:
guid = CAT_GUID_SIZE
elif scid == PKEY_Sample_NumberOfSides:
guid = CAT_GUID_SIDES
elif scid == PKEY_Sample_DirectoryLevel:
guid = CAT_GUID_LEVEL
elif scid == pythoncom.IID_NULL:
# This can be called with a NULL
# format ID. This will happen if you have a category,
# not based on a column, that gets stored in the
# property bag. When a return is made to this item,
# it will call this function with a NULL format id.
guid = CAT_GUID_VALUE
else:
raise COMException(hresult=winerror.E_INVALIDARG)
return guid
# Retrieves the name of the specified category. This is where
# additional categories that appear under the column
# related categories in the UI, get their display names.
def GetCategoryName(self, guid, cch):
if guid == CAT_GUID_VALUE:
return "Value"
raise COMException(hresult=winerror.E_FAIL)
# Enables the folder to override the default grouping.
def GetDefaultCategory(self):
return CAT_GUID_LEVEL, (pythoncom.IID_NULL, 0)
# end of sample's Category.cpp port
# start of sample's ContextMenu.cpp port
MENUVERB_DISPLAY = 0
folderViewImplContextMenuIDs = [
(
"display",
MENUVERB_DISPLAY,
0,
),
]
class ContextMenu:
_reg_progid_ = "Python.ShellFolderSample.ContextMenu"
_reg_desc_ = "Python FolderView Context Menu"
_reg_clsid_ = "{fed40039-021f-4011-87c5-6188b9979764}"
_com_interfaces_ = [
shell.IID_IShellExtInit,
shell.IID_IContextMenu,
axcontrol.IID_IObjectWithSite,
]
_public_methods_ = (
shellcon.IContextMenu_Methods
+ shellcon.IShellExtInit_Methods
+ ["GetSite", "SetSite"]
)
_context_menu_type_ = "PythonFolderViewSampleType"
def __init__(self):
self.site = None
self.dataobj = None
def Initialize(self, folder, dataobj, hkey):
self.dataobj = dataobj
def QueryContextMenu(self, hMenu, indexMenu, idCmdFirst, idCmdLast, uFlags):
s = LoadString(IDS_DISPLAY)
win32gui.InsertMenu(
hMenu, indexMenu, win32con.MF_BYPOSITION, idCmdFirst + MENUVERB_DISPLAY, s
)
indexMenu += 1
# other verbs could go here...
# indicate that we added one verb.
return 1
def InvokeCommand(self, ci):
mask, hwnd, verb, params, dir, nShow, hotkey, hicon = ci
# this seems very convuluted, but its what the sample does :)
for verb_name, verb_id, flag in folderViewImplContextMenuIDs:
if isinstance(verb, int):
matches = verb == verb_id
else:
matches = verb == verb_name
if matches:
break
else:
assert False, ci # failed to find our ID
if verb_id == MENUVERB_DISPLAY:
sia = shell.SHCreateShellItemArrayFromDataObject(self.dataobj)
DisplayItem(hwnd, sia)
else:
assert False, ci # Got some verb we weren't expecting?
def GetCommandString(self, cmd, typ):
raise COMException(hresult=winerror.E_NOTIMPL)
def SetSite(self, site):
self.site = site
def GetSite(self, iid):
return self.site
# end of sample's ContextMenu.cpp port
# start of sample's ShellFolder.cpp port
class ShellFolder:
_com_interfaces_ = [
shell.IID_IBrowserFrameOptions,
pythoncom.IID_IPersist,
shell.IID_IPersistFolder,
shell.IID_IPersistFolder2,
shell.IID_IShellFolder,
shell.IID_IShellFolder2,
]
_public_methods_ = (
shellcon.IBrowserFrame_Methods
+ shellcon.IPersistFolder2_Methods
+ shellcon.IShellFolder2_Methods
)
_reg_progid_ = "Python.ShellFolderSample.Folder2"
_reg_desc_ = "Python FolderView sample"
_reg_clsid_ = "{bb8c24ad-6aaa-4cec-ac5e-c429d5f57627}"
max_levels = 5
def __init__(self, level=0):
self.current_level = level
self.pidl = None # set when Initialize is called
def ParseDisplayName(self, hwnd, reserved, displayName, attr):
# print "ParseDisplayName", displayName
raise COMException(hresult=winerror.E_NOTIMPL)
def EnumObjects(self, hwndOwner, flags):
if self.current_level >= self.max_levels:
return None
return make_item_enum(self.current_level + 1, flags)
def BindToObject(self, pidl, bc, iid):
tail = pidl_to_item(pidl)
# assert tail['is_folder'], "BindToObject should only be called on folders?"
# *sob*
# No point creating object just to have QI fail.
if iid not in ShellFolder._com_interfaces_:
raise COMException(hresult=winerror.E_NOTIMPL)
child = ShellFolder(self.current_level + 1)
# hrmph - not sure what multiple PIDLs here mean?
# assert len(pidl)==1, pidl # expecting just relative child PIDL
child.Initialize(self.pidl + pidl)
return wrap(child, iid)
def BindToStorage(self, pidl, bc, iid):
return self.BindToObject(pidl, bc, iid)
def CompareIDs(self, param, id1, id2):
return 0 # XXX - todo - implement this!
def CreateViewObject(self, hwnd, iid):
if iid == shell.IID_IShellView:
com_folder = wrap(self)
return shell.SHCreateShellFolderView(com_folder)
elif iid == shell.IID_ICategoryProvider:
return wrap(ViewCategoryProvider(self))
elif iid == shell.IID_IContextMenu:
ws = wrap(self)
dcm = (hwnd, None, self.pidl, ws, None)
return shell.SHCreateDefaultContextMenu(dcm, iid)
elif iid == shell.IID_IExplorerCommandProvider:
return wrap(ExplorerCommandProvider())
else:
raise COMException(hresult=winerror.E_NOINTERFACE)
def GetAttributesOf(self, pidls, attrFlags):
assert len(pidls) == 1, "sample only expects 1 too!"
assert len(pidls[0]) == 1, "expect relative pidls!"
item = pidl_to_item(pidls[0])
flags = 0
if item["is_folder"]:
flags |= shellcon.SFGAO_FOLDER
if item["level"] < self.max_levels:
flags |= shellcon.SFGAO_HASSUBFOLDER
return flags
# Retrieves an OLE interface that can be used to carry out
# actions on the specified file objects or folders.
def GetUIObjectOf(self, hwndOwner, pidls, iid, inout):
assert len(pidls) == 1, "oops - arent expecting more than one!"
assert len(pidls[0]) == 1, "assuming relative pidls!"
item = pidl_to_item(pidls[0])
if iid == shell.IID_IContextMenu:
ws = wrap(self)
dcm = (hwndOwner, None, self.pidl, ws, pidls)
return shell.SHCreateDefaultContextMenu(dcm, iid)
elif iid == shell.IID_IExtractIconW:
dxi = shell.SHCreateDefaultExtractIcon()
# dxi is IDefaultExtractIconInit
if item["is_folder"]:
dxi.SetNormalIcon("shell32.dll", 4)
else:
dxi.SetNormalIcon("shell32.dll", 1)
# just return the dxi - let Python QI for IID_IExtractIconW
return dxi
elif iid == pythoncom.IID_IDataObject:
return shell.SHCreateDataObject(self.pidl, pidls, None, iid)
elif iid == shell.IID_IQueryAssociations:
elts = []
if item["is_folder"]:
elts.append((shellcon.ASSOCCLASS_FOLDER, None, None))
elts.append(
(shellcon.ASSOCCLASS_PROGID_STR, None, ContextMenu._context_menu_type_)
)
return shell.AssocCreateForClasses(elts, iid)
raise COMException(hresult=winerror.E_NOINTERFACE)
# Retrieves the display name for the specified file object or subfolder.
def GetDisplayNameOf(self, pidl, flags):
item = pidl_to_item(pidl)
if flags & shellcon.SHGDN_FORPARSING:
if flags & shellcon.SHGDN_INFOLDER:
return item["name"]
else:
if flags & shellcon.SHGDN_FORADDRESSBAR:
sigdn = shellcon.SIGDN_DESKTOPABSOLUTEEDITING
else:
sigdn = shellcon.SIGDN_DESKTOPABSOLUTEPARSING
parent = shell.SHGetNameFromIDList(self.pidl, sigdn)
return parent + "\\" + item["name"]
else:
return item["name"]
def SetNameOf(self, hwndOwner, pidl, new_name, flags):
raise COMException(hresult=winerror.E_NOTIMPL)
def GetClassID(self):
return self._reg_clsid_
# IPersistFolder method
def Initialize(self, pidl):
self.pidl = pidl
# IShellFolder2 methods
def EnumSearches(self):
raise COMException(hresult=winerror.E_NOINTERFACE)
# Retrieves the default sorting and display columns.
def GetDefaultColumn(self, dwres):
# result is (sort, display)
return 0, 0
# Retrieves the default state for a specified column.
def GetDefaultColumnState(self, iCol):
if iCol < 3:
return shellcon.SHCOLSTATE_ONBYDEFAULT | shellcon.SHCOLSTATE_TYPE_STR
raise COMException(hresult=winerror.E_INVALIDARG)
# Requests the GUID of the default search object for the folder.
def GetDefaultSearchGUID(self):
raise COMException(hresult=winerror.E_NOTIMPL)
# Helper function for getting the display name for a column.
def _GetColumnDisplayName(self, pidl, pkey):
item = pidl_to_item(pidl)
is_folder = item["is_folder"]
if pkey == PKEY_ItemNameDisplay:
val = item["name"]
elif pkey == PKEY_Sample_AreaSize and not is_folder:
val = "%d Sq. Ft." % item["size"]
elif pkey == PKEY_Sample_NumberOfSides and not is_folder:
val = str(item["sides"]) # not sure why str()
elif pkey == PKEY_Sample_DirectoryLevel:
val = str(item["level"])
else:
val = ""
return val
# Retrieves detailed information, identified by a
# property set ID (FMTID) and property ID (PID),
# on an item in a Shell folder.
def GetDetailsEx(self, pidl, pkey):
item = pidl_to_item(pidl)
is_folder = item["is_folder"]
if not is_folder and pkey == PKEY_PropList_PreviewDetails:
return "prop:Sample.AreaSize;Sample.NumberOfSides;Sample.DirectoryLevel"
return self._GetColumnDisplayName(pidl, pkey)
# Retrieves detailed information, identified by a
# column index, on an item in a Shell folder.
def GetDetailsOf(self, pidl, iCol):
key = self.MapColumnToSCID(iCol)
if pidl is None:
data = [
(commctrl.LVCFMT_LEFT, "Name"),
(commctrl.LVCFMT_CENTER, "Size"),
(commctrl.LVCFMT_CENTER, "Sides"),
(commctrl.LVCFMT_CENTER, "Level"),
]
if iCol >= len(data):
raise COMException(hresult=winerror.E_FAIL)
fmt, val = data[iCol]
else:
fmt = 0 # ?
val = self._GetColumnDisplayName(pidl, key)
cxChar = 24
return fmt, cxChar, val
# Converts a column name to the appropriate
# property set ID (FMTID) and property ID (PID).
def MapColumnToSCID(self, iCol):
data = [
PKEY_ItemNameDisplay,
PKEY_Sample_AreaSize,
PKEY_Sample_NumberOfSides,
PKEY_Sample_DirectoryLevel,
]
if iCol >= len(data):
raise COMException(hresult=winerror.E_FAIL)
return data[iCol]
# IPersistFolder2 methods
# Retrieves the PIDLIST_ABSOLUTE for the folder object.
def GetCurFolder(self):
# The docs say this is OK, but I suspect its a problem in this case :)
# assert self.pidl, "haven't been initialized?"
return self.pidl
# end of sample's ShellFolder.cpp port
def get_schema_fname():
me = win32api.GetFullPathName(__file__)
sc = os.path.splitext(me)[0] + ".propdesc"
assert os.path.isfile(sc), sc
return sc
def DllRegisterServer():
import winreg
if sys.getwindowsversion()[0] < 6:
print("This sample only works on Vista")
sys.exit(1)
key = winreg.CreateKey(
winreg.HKEY_LOCAL_MACHINE,
"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\"
"Explorer\\Desktop\\Namespace\\" + ShellFolder._reg_clsid_,
)
winreg.SetValueEx(key, None, 0, winreg.REG_SZ, ShellFolder._reg_desc_)
# And special shell keys under our CLSID
key = winreg.CreateKey(
winreg.HKEY_CLASSES_ROOT, "CLSID\\" + ShellFolder._reg_clsid_ + "\\ShellFolder"
)
# 'Attributes' is an int stored as a binary! use struct
attr = (
shellcon.SFGAO_FOLDER | shellcon.SFGAO_HASSUBFOLDER | shellcon.SFGAO_BROWSABLE
)
import struct
s = struct.pack("i", attr)
winreg.SetValueEx(key, "Attributes", 0, winreg.REG_BINARY, s)
# register the context menu handler under the FolderViewSampleType type.
keypath = "%s\\shellex\\ContextMenuHandlers\\%s" % (
ContextMenu._context_menu_type_,
ContextMenu._reg_desc_,
)
key = winreg.CreateKey(winreg.HKEY_CLASSES_ROOT, keypath)
winreg.SetValueEx(key, None, 0, winreg.REG_SZ, ContextMenu._reg_clsid_)
propsys.PSRegisterPropertySchema(get_schema_fname())
print(ShellFolder._reg_desc_, "registration complete.")
def DllUnregisterServer():
import winreg
paths = [
"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Desktop\\Namespace\\"
+ ShellFolder._reg_clsid_,
"%s\\shellex\\ContextMenuHandlers\\%s"
% (ContextMenu._context_menu_type_, ContextMenu._reg_desc_),
]
for path in paths:
try:
winreg.DeleteKey(winreg.HKEY_LOCAL_MACHINE, path)
except WindowsError as details:
import errno
if details.errno != errno.ENOENT:
print("FAILED to remove %s: %s" % (path, details))
propsys.PSUnregisterPropertySchema(get_schema_fname())
print(ShellFolder._reg_desc_, "unregistration complete.")
if __name__ == "__main__":
from win32com.server import register
register.UseCommandLine(
ShellFolder,
ContextMenu,
debug=debug,
finalize_register=DllRegisterServer,
finalize_unregister=DllUnregisterServer,
)