ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

PATH: opt / alt / python33 / lib64 / python3.3 / idlelib

from idlelib.WidgetRedirector import WidgetRedirector
from idlelib.Delegator import Delegator

class Percolator:

def __init__(self, text):
        # XXX would be nice to inherit from Delegator
        self.text = text
        self.redir = WidgetRedirector(text)
        self.top = self.bottom = Delegator(text)
        self.bottom.insert = self.redir.register("insert", self.insert)
        self.bottom.delete = self.redir.register("delete", self.delete)
        self.filters = []

def close(self):
        while self.top is not self.bottom:
            self.removefilter(self.top)
        self.top = None
        self.bottom.setdelegate(None); self.bottom = None
        self.redir.close(); self.redir = None
        self.text = None

def insert(self, index, chars, tags=None):
        # Could go away if inheriting from Delegator
        self.top.insert(index, chars, tags)

def delete(self, index1, index2=None):
        # Could go away if inheriting from Delegator
        self.top.delete(index1, index2)

def insertfilter(self, filter):
        # Perhaps rename to pushfilter()?
        assert isinstance(filter, Delegator)
        assert filter.delegate is None
        filter.setdelegate(self.top)
        self.top = filter

def removefilter(self, filter):
        # XXX Perhaps should only support popfilter()?
        assert isinstance(filter, Delegator)
        assert filter.delegate is not None
        f = self.top
        if f is filter:
            self.top = filter.delegate
            filter.setdelegate(None)
        else:
            while f.delegate is not filter:
                assert f is not self.bottom
                f.resetcache()
                f = f.delegate
            f.setdelegate(filter.delegate)
            filter.setdelegate(None)

def main():
    import tkinter as Tk
    class Tracer(Delegator):
        def __init__(self, name):
            self.name = name
            Delegator.__init__(self, None)
        def insert(self, *args):
            print(self.name, ": insert", args)
            self.delegate.insert(*args)
        def delete(self, *args):
            print(self.name, ": delete", args)
            self.delegate.delete(*args)
    root = Tk.Tk()
    root.wm_protocol("WM_DELETE_WINDOW", root.quit)
    text = Tk.Text()
    text.pack()
    text.focus_set()
    p = Percolator(text)
    t1 = Tracer("t1")
    t2 = Tracer("t2")
    p.insertfilter(t1)
    p.insertfilter(t2)
    root.mainloop() # click close widget to continue...
    p.removefilter(t2)
    root.mainloop()
    p.insertfilter(t2)
    p.removefilter(t1)
    root.mainloop()

if __name__ == "__main__":
    main()

[-] textView.py [edit]
[-] IdleHistory.py [edit]
[-] FormatParagraph.py [edit]
[-] CodeContext.py [edit]
[-] ZoomHeight.py [edit]
[-] config-main.def [edit]
[+] __pycache__
[-] Bindings.py [edit]
[-] __init__.py [edit]
[-] keybindingDialog.py [edit]
[-] WidgetRedirector.py [edit]
[-] ObjectBrowser.py [edit]
[-] configHandler.py [edit]
[-] MultiStatusBar.py [edit]
[-] idle.py [edit]
[-] rpc.py [edit]
[-] configSectionNameDialog.py [edit]
[-] EditorWindow.py [edit]
[-] PathBrowser.py [edit]
[-] TODO.txt [edit]
[-] RemoteDebugger.py [edit]
[-] SearchEngine.py [edit]
[-] ParenMatch.py [edit]
[-] config-extensions.def [edit]
[-] MultiCall.py [edit]
[-] configHelpSourceEdit.py [edit]
[-] Debugger.py [edit]
[-] aboutDialog.py [edit]
[-] ScriptBinding.py [edit]
[-] extend.txt [edit]
[-] UndoDelegator.py [edit]
[-] PyParse.py [edit]
[-] config-highlight.def [edit]
[-] HISTORY.txt [edit]
[-] ScrolledList.py [edit]
[-] AutoCompleteWindow.py [edit]
[+] idle_test
[-] IOBinding.py [edit]
[-] ReplaceDialog.py [edit]
[-] help.txt [edit]
[-] RstripExtension.py [edit]
[-] configDialog.py [edit]
[-] CallTipWindow.py [edit]
[-] idle.pyw [edit]
[-] run.py [edit]
[-] dynOptionMenuWidget.py [edit]
[-] config-keys.def [edit]
[-] RemoteObjectBrowser.py [edit]
[-] NEWS.txt [edit]
[-] ClassBrowser.py [edit]
[-] WindowList.py [edit]
[-] ColorDelegator.py [edit]
[-] tabbedpages.py [edit]
[-] macosxSupport.py [edit]
[+] ..
[-] README.txt [edit]
[-] ToolTip.py [edit]
[+] Icons
[-] TreeWidget.py [edit]
[-] HyperParser.py [edit]
[-] CallTips.py [edit]
[-] AutoComplete.py [edit]
[-] SearchDialogBase.py [edit]
[-] ChangeLog [edit]
[-] idlever.py [edit]
[-] AutoExpand.py [edit]
[-] SearchDialog.py [edit]
[-] Delegator.py [edit]
[-] StackViewer.py [edit]
[-] CREDITS.txt [edit]
[-] FileList.py [edit]
[-] OutputWindow.py [edit]
[-] GrepDialog.py [edit]
[-] Percolator.py [edit]
[-] __main__.py [edit]
[-] PyShell.py [edit]