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261 lines
8.4 KiB
Python
261 lines
8.4 KiB
Python
"""Module browser.
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XXX TO DO:
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- reparse when source changed (maybe just a button would be OK?)
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(or recheck on window popup)
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- add popup menu with more options (e.g. doc strings, base classes, imports)
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- add base classes to class browser tree
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"""
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import os
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import pyclbr
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import sys
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from idlelib.config import idleConf
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from idlelib import pyshell
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from idlelib.tree import TreeNode, TreeItem, ScrolledCanvas
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from idlelib.util import py_extensions
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from idlelib.window import ListedToplevel
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file_open = None # Method...Item and Class...Item use this.
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# Normally pyshell.flist.open, but there is no pyshell.flist for htest.
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# The browser depends on pyclbr and importlib which do not support .pyi files.
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browseable_extension_blocklist = ('.pyi',)
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def is_browseable_extension(path):
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_, ext = os.path.splitext(path)
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ext = os.path.normcase(ext)
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return ext in py_extensions and ext not in browseable_extension_blocklist
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def transform_children(child_dict, modname=None):
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"""Transform a child dictionary to an ordered sequence of objects.
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The dictionary maps names to pyclbr information objects.
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Filter out imported objects.
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Augment class names with bases.
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The insertion order of the dictionary is assumed to have been in line
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number order, so sorting is not necessary.
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The current tree only calls this once per child_dict as it saves
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TreeItems once created. A future tree and tests might violate this,
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so a check prevents multiple in-place augmentations.
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"""
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obs = [] # Use list since values should already be sorted.
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for key, obj in child_dict.items():
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if modname is None or obj.module == modname:
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if hasattr(obj, 'super') and obj.super and obj.name == key:
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# If obj.name != key, it has already been suffixed.
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supers = []
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for sup in obj.super:
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if isinstance(sup, str):
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sname = sup
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else:
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sname = sup.name
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if sup.module != obj.module:
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sname = f'{sup.module}.{sname}'
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supers.append(sname)
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obj.name += '({})'.format(', '.join(supers))
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obs.append(obj)
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return obs
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class ModuleBrowser:
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"""Browse module classes and functions in IDLE.
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"""
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# This class is also the base class for pathbrowser.PathBrowser.
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# Init and close are inherited, other methods are overridden.
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# PathBrowser.__init__ does not call __init__ below.
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def __init__(self, master, path, *, _htest=False, _utest=False):
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"""Create a window for browsing a module's structure.
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Args:
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master: parent for widgets.
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path: full path of file to browse.
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_htest - bool; change box location when running htest.
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-utest - bool; suppress contents when running unittest.
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Global variables:
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file_open: Function used for opening a file.
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Instance variables:
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name: Module name.
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file: Full path and module with supported extension.
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Used in creating ModuleBrowserTreeItem as the rootnode for
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the tree and subsequently in the children.
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"""
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self.master = master
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self.path = path
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self._htest = _htest
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self._utest = _utest
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self.init()
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def close(self, event=None):
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"Dismiss the window and the tree nodes."
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self.top.destroy()
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self.node.destroy()
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def init(self):
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"Create browser tkinter widgets, including the tree."
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global file_open
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root = self.master
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flist = (pyshell.flist if not (self._htest or self._utest)
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else pyshell.PyShellFileList(root))
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file_open = flist.open
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pyclbr._modules.clear()
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# create top
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self.top = top = ListedToplevel(root)
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top.protocol("WM_DELETE_WINDOW", self.close)
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top.bind("<Escape>", self.close)
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if self._htest: # place dialog below parent if running htest
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top.geometry("+%d+%d" %
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(root.winfo_rootx(), root.winfo_rooty() + 200))
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self.settitle()
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top.focus_set()
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# create scrolled canvas
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theme = idleConf.CurrentTheme()
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background = idleConf.GetHighlight(theme, 'normal')['background']
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sc = ScrolledCanvas(top, bg=background, highlightthickness=0,
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takefocus=1)
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sc.frame.pack(expand=1, fill="both")
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item = self.rootnode()
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self.node = node = TreeNode(sc.canvas, None, item)
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if not self._utest:
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node.update()
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node.expand()
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def settitle(self):
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"Set the window title."
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self.top.wm_title("Module Browser - " + os.path.basename(self.path))
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self.top.wm_iconname("Module Browser")
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def rootnode(self):
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"Return a ModuleBrowserTreeItem as the root of the tree."
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return ModuleBrowserTreeItem(self.path)
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class ModuleBrowserTreeItem(TreeItem):
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"""Browser tree for Python module.
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Uses TreeItem as the basis for the structure of the tree.
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Used by both browsers.
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"""
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def __init__(self, file):
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"""Create a TreeItem for the file.
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Args:
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file: Full path and module name.
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"""
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self.file = file
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def GetText(self):
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"Return the module name as the text string to display."
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return os.path.basename(self.file)
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def GetIconName(self):
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"Return the name of the icon to display."
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return "python"
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def GetSubList(self):
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"Return ChildBrowserTreeItems for children."
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return [ChildBrowserTreeItem(obj) for obj in self.listchildren()]
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def OnDoubleClick(self):
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"Open a module in an editor window when double clicked."
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if not is_browseable_extension(self.file):
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return
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if not os.path.exists(self.file):
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return
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file_open(self.file)
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def IsExpandable(self):
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"Return True if Python file."
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return is_browseable_extension(self.file)
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def listchildren(self):
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"Return sequenced classes and functions in the module."
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if not is_browseable_extension(self.file):
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return []
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dir, base = os.path.split(self.file)
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name, _ = os.path.splitext(base)
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try:
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tree = pyclbr.readmodule_ex(name, [dir] + sys.path)
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except ImportError:
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return []
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return transform_children(tree, name)
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class ChildBrowserTreeItem(TreeItem):
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"""Browser tree for child nodes within the module.
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Uses TreeItem as the basis for the structure of the tree.
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"""
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def __init__(self, obj):
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"Create a TreeItem for a pyclbr class/function object."
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self.obj = obj
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self.name = obj.name
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self.isfunction = isinstance(obj, pyclbr.Function)
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def GetText(self):
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"Return the name of the function/class to display."
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name = self.name
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if self.isfunction:
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return "def " + name + "(...)"
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else:
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return "class " + name
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def GetIconName(self):
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"Return the name of the icon to display."
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if self.isfunction:
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return "python"
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else:
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return "folder"
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def IsExpandable(self):
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"Return True if self.obj has nested objects."
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return self.obj.children != {}
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def GetSubList(self):
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"Return ChildBrowserTreeItems for children."
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return [ChildBrowserTreeItem(obj)
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for obj in transform_children(self.obj.children)]
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def OnDoubleClick(self):
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"Open module with file_open and position to lineno."
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try:
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edit = file_open(self.obj.file)
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edit.gotoline(self.obj.lineno)
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except (OSError, AttributeError):
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pass
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def _module_browser(parent): # htest #
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if len(sys.argv) > 1: # If pass file on command line.
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file = sys.argv[1]
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else:
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file = __file__
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# Add nested objects for htest.
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class Nested_in_func(TreeNode):
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def nested_in_class(): pass
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def closure():
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class Nested_in_closure: pass
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ModuleBrowser(parent, file, _htest=True)
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if __name__ == "__main__":
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if len(sys.argv) == 1: # If pass file on command line, unittest fails.
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from unittest import main
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main('idlelib.idle_test.test_browser', verbosity=2, exit=False)
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from idlelib.idle_test.htest import run
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run(_module_browser)
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