Python Combobox.insert方法代码示例

# 需要导入模块: from tkinter.ttk import Combobox [as 别名]
# 或者: from tkinter.ttk.Combobox import insert [as 别名]

#.........这里部分代码省略.........

        # If the text is not changing.

        # Set text changing flag on
        self._is_changing = True

        # If notify event
        if notify:
            # Notify pre-change event
            self.handler_notify(
                self.TEXT_CHANGE_SOON,
                arg=notify_arg,
                need_info=True,
            )

        # Cache the text
        self._text = text

        # If caller is not validator,
        # need change text widget's value.
        if not is_validator:
            # Unmount the validator wrapper before changing text widget's value
            self._validator_wrapper_unmount()

            # Set text widget to NORMAL state
            self.state_set(NORMAL)

            # Delete the old text from text widget.
            # This will not trigger validation because the validator wrapper
            # has been unmounted.
            self._text_widget.delete(0, END)

            # Insert the new text into text widget.
            self._text_widget.insert(0, text)

            # Set text widget to previous state
            self.state_set_back()

            # Mount the validator wrapper after changing text widget's value
            self._validator_wrapper_mount()

        # If caller is validator
        # no need change text widget's value.

        # If the cached text is not EQ text widget's value
        if self._text != self._text_widget.get():
            # If caller is not validator
            if not is_validator:
                # Set changing flag off
                self._is_changing = False

                # Raise error
                raise ValueError(
                    'Inconsistent state. `{}` != `{}`'.format(
                        repr(self._text),
                        repr(self._text_widget.get()),
                    )
                )

            # If caller is validator,
            # this is normal because text widget's value will be updated after
            # the validator returns.

        # If notify event
        if notify:
            # Notify post-change event

# 需要导入模块: from tkinter.ttk import Combobox [as 别名]
# 或者: from tkinter.ttk.Combobox import insert [as 别名]
def run_with_gui():
    root = Tk()
    root.title("PyEncConv")

    def browse_in():
        name = askopenfilename()
        if name:
            in_txt.delete(0, END)
            in_txt.insert(END, name)

    def browse_out():
        name = asksaveasfilename()
        if name:
            out_txt.delete(0, END)
            out_txt.insert(END, name)

    # input file
    f = Frame(root)
    f.pack(anchor=W, fill=X)
    Label(f, text="input file:").pack(side=LEFT)
    in_txt = Entry(f)
    in_txt.pack(fill=X, expand=True, side=LEFT)
    in_browse = Button(f, text="browse...", command=browse_in)
    in_browse.pack(side=LEFT)

    def load_file():
        try:
            txt_area.delete(1.0, END)
            in_enc = in_enc_cmb.get()
            in_alias_lbl.config(text=(' '.join(get_alt_names(in_enc))))

            with open(in_txt.get(), 'r', encoding=in_enc) as f:
                txt_area.insert(END, f.read())
        except IOError as e:
            txt_area.insert(END, str(e))
        except OSError as e:
            txt_area.insert(END, str(e))
        except LookupError as e:
            txt_area.insert(END, str(e))
        except Exception as e:
            txt_area.insert(END, str(e))

    # input encoding
    f = Frame(root)
    f.pack(anchor=W, fill=X)
    Label(f, text="input encoding:").pack(side=LEFT)
    in_enc_cmb = Combobox(f)
    in_enc_cmb.pack(side=LEFT)
    in_enc_cmb['values'] = enc_set
    in_enc_cmb.insert(END, getpreferredencoding())
    in_enc_cmb.bind('<Return>', lambda event:load_file())
    in_alias_lbl = Label(f)
    in_alias_lbl.pack(side=LEFT)

    Button(root, text="Load for preview", command=load_file).pack(anchor=W)

    def disable_output_file():
        out_txt.config(state=DISABLED)
        out_browse.config(state=DISABLED)

    def enable_output_file():
        out_txt.config(state=NORMAL)
        out_browse.config(state=NORMAL)

    # output file
    out_choice = IntVar(value=1)
    Radiobutton(root, text="overwrite original (after moving to .bak)",
            variable = out_choice, value=1,
            command=disable_output_file).pack(anchor=W)
    f = Frame(root)
    f.pack(anchor=W, fill=X)
    Radiobutton(f, text="output file:",
            variable = out_choice, value=2,
            command=enable_output_file).pack(side=LEFT)
    out_txt = Entry(f, state=DISABLED)
    out_txt.pack(fill=X, expand=True, side=LEFT)
    out_browse = Button(f, text="browse...", command=browse_out,
            state=DISABLED)
    out_browse.pack(side=LEFT)

    # output encoding
    f = Frame(root)
    f.pack(anchor=W, fill=X)
    Label(f, text="output encoding:").pack(side=LEFT)
    out_enc_cmb = Combobox(f)
    out_enc_cmb.pack(side=LEFT)
    out_enc_cmb['values'] = enc_set
    out_enc_cmb.insert(END, 'UTF-8')
    out_alias_lbl = Label(f)
    out_alias_lbl.pack(side=LEFT)

    def convert():
        try:
            txt_area.delete(1.0, END)
            in_enc = in_enc_cmb.get()
            in_alias_lbl.config(text=(' '.join(get_alt_names(in_enc))))
            out_enc = out_enc_cmb.get()
            out_alias_lbl.config(text=(' '.join(get_alt_names(out_enc))))

            src_file = in_txt.get()
#.........这里部分代码省略.........