1 files changed, 111 insertions, 0 deletions
diff --git a/Lib/idlelib/pathbrowser.py b/Lib/idlelib/pathbrowser.py
new file mode 100644
index 0000000000..6c19508d31
--- /dev/null
+++ b/Lib/idlelib/pathbrowser.py
@@ -0,0 +1,111 @@
+import importlib.machinery
+import os
+import sys
+
+from idlelib.browser import ClassBrowser, ModuleBrowserTreeItem
+from idlelib.pyshell import PyShellFileList
+from idlelib.tree import TreeItem
+
+
+class PathBrowser(ClassBrowser):
+
+    def __init__(self, flist, _htest=False):
+        """
+        _htest - bool, change box location when running htest
+        """
+        self._htest = _htest
+        self.init(flist)
+
+    def settitle(self):
+        "Set window titles."
+        self.top.wm_title("Path Browser")
+        self.top.wm_iconname("Path Browser")
+
+    def rootnode(self):
+        return PathBrowserTreeItem()
+
+
+class PathBrowserTreeItem(TreeItem):
+
+    def GetText(self):
+        return "sys.path"
+
+    def GetSubList(self):
+        sublist = []
+        for dir in sys.path:
+            item = DirBrowserTreeItem(dir)
+            sublist.append(item)
+        return sublist
+
+
+class DirBrowserTreeItem(TreeItem):
+
+    def __init__(self, dir, packages=[]):
+        self.dir = dir
+        self.packages = packages
+
+    def GetText(self):
+        if not self.packages:
+            return self.dir
+        else:
+            return self.packages[-1] + ": package"
+
+    def GetSubList(self):
+        try:
+            names = os.listdir(self.dir or os.curdir)
+        except OSError:
+            return []
+        packages = []
+        for name in names:
+            file = os.path.join(self.dir, name)
+            if self.ispackagedir(file):
+                nn = os.path.normcase(name)
+                packages.append((nn, name, file))
+        packages.sort()
+        sublist = []
+        for nn, name, file in packages:
+            item = DirBrowserTreeItem(file, self.packages + [name])
+            sublist.append(item)
+        for nn, name in self.listmodules(names):
+            item = ModuleBrowserTreeItem(os.path.join(self.dir, name))
+            sublist.append(item)
+        return sublist
+
+    def ispackagedir(self, file):
+        " Return true for directories that are packages."
+        if not os.path.isdir(file):
+            return False
+        init = os.path.join(file, "__init__.py")
+        return os.path.exists(init)
+
+    def listmodules(self, allnames):
+        modules = {}
+        suffixes = importlib.machinery.EXTENSION_SUFFIXES[:]
+        suffixes += importlib.machinery.SOURCE_SUFFIXES
+        suffixes += importlib.machinery.BYTECODE_SUFFIXES
+        sorted = []
+        for suff in suffixes:
+            i = -len(suff)
+            for name in allnames[:]:
+                normed_name = os.path.normcase(name)
+                if normed_name[i:] == suff:
+                    mod_name = name[:i]
+                    if mod_name not in modules:
+                        modules[mod_name] = None
+                        sorted.append((normed_name, name))
+                        allnames.remove(name)
+        sorted.sort()
+        return sorted
+
+
+def _path_browser(parent):  # htest #
+    flist = PyShellFileList(parent)
+    PathBrowser(flist, _htest=True)
+    parent.mainloop()
+
+if __name__ == "__main__":
+    from unittest import main
+    main('idlelib.idle_test.test_pathbrowser', verbosity=2, exit=False)
+
+    from idlelib.idle_test.htest import run
+    run(_path_browser)