/usr/share/pyshared/plwm/input.py is in python-plwm 2.6a+20080530-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# input.py -- input editing for PLWM
#
# Copyright (C) 2001 Mike Meyer <mwm@mired.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"input - a tool for getting input from the user."
from Xlib import X, Xatom
from keys import KeyGrabKeyboard, allmap
from wmanager import Window
class InputKeyHandler(KeyGrabKeyboard):
"""Template for handling user input.
InputKeyHandler defines the following event handler methods:
_insert - insert the character typed. The latin1 character set is
bound to this by default.
_forw, _back - move the cursor forward or backward in the input
_delforw, _delback - delete the character forward or backward in the input
_end, _begin - move the cursor to the end or beginning of the input
_deltoend - remove all characters to the end of the input
_paste - paste the current selection into the intput. The handler
must be an instance of wmanager.Window for this to work
_done - run action on the current string
_abort - exit without doing anything
_history_up - scroll to newer events
_history_down - scroll to older events"""
timeout = None
def __init__(self, handler, display, history):
"""Init with a handler and display.
handler is a handler object appropriate for KeyGrabKeyboard.
display has show(left, right), do(string) and abort() methods.
both abort() and do() should clean up the object.
history is a list of strings we let the user scroll through."""
KeyGrabKeyboard.__init__(self, handler, X.CurrentTime)
self.display = display
self.handler = handler
self.history = history
self.history_index = len(history)
self.left = ""
self.right = ""
if isinstance(handler, Window):
self.selection = self.wm.display.intern_atom("SELECTION")
self.wm.dispatch.add_handler(X.SelectionNotify,
self._paste_selection, handlerid = self)
display.show(self.left, self.right)
def _paste_selection(self, event):
if event.property:
sel = self.handler.window.get_full_property(self.selection, Xatom.STRING)
if sel and sel.format == 8:
self.left = self.left + sel.value
self.display.show(self.left, self.right)
def _paste(self, event):
if isinstance(self.handler, Window):
self.handler.window.convert_selection(Xatom.PRIMARY, Xatom.STRING,
self.selection, X.CurrentTime)
def _insert(self, event):
if event.type != X.KeyPress: return
sym = self.wm.display.keycode_to_keysym(event.detail,
event.state & X.ShiftMask != 0)
chr = self.wm.display.lookup_string(sym)
if chr: self.left = self.left + chr
self.display.show(self.left, self.right)
def _forw(self, event):
if self.right:
self.left = self.left + self.right[0]
self.right = self.right[1:]
self.display.show(self.left, self.right)
def _back(self, event):
if self.left:
self.right = self.left[-1] + self.right
self.left = self.left[:-1]
self.display.show(self.left, self.right)
def _delforw(self, event):
if self.right:
self.right = self.right[1:]
self.display.show(self.left, self.right)
def _delback(self, event):
if self.left:
self.left = self.left[:-1]
self.display.show(self.left, self.right)
def _deltoend(self, event):
self.right = ""
self.display.show(self.left, self.right)
def _end(self, event):
self.left = self.left + self.right
self.right = ""
self.display.show(self.left, self.right)
def _begin(self, event):
self.right = self.left + self.right
self.left = ""
self.display.show(self.left, self.right)
def _done(self, event):
res = self.left + self.right
self.history.append(res)
self.display.do(res)
self.wm.dispatch.remove_handler(self)
self._cleanup()
def _abort(self, event):
self.display.abort()
self.wm.dispatch.remove_handler(self)
self._cleanup()
def _history_up(self, event):
if len(self.history):
if self.history_index > 0:
self.history_index -= 1
self.left = self.history[self.history_index]
self.right = ""
self.display.show(self.left, self.right)
def _history_down(self, event):
if len(self.history):
if self.history_index <(len(self.history)-1):
self.history_index += 1
self.left = self.history[self.history_index]
self.right = ""
self.display.show(self.left, self.right)
allmap(InputKeyHandler, InputKeyHandler._insert)
class inputWindow:
"Class to get a line of user input in a window."
fontname= "9x15"
foreground = "black"
background = "white"
borderwidth = 3
bordercolor = "black"
history = []
def __init__(self, prompt, screen, length=30):
if not prompt: prompt = ' ' # We have problems if there's no prompt, so add one.
self.string = self.prompt = prompt
self.offset = len(self.prompt)
self.length = length + self.offset
self.start = 0
fg = screen.get_color(self.foreground)
bg = screen.get_color(self.background)
bc = screen.get_color(self.bordercolor)
font = screen.wm.get_font(self.fontname, 'fixed')
size = font.query()
self.height = size.font_ascent + size.font_descent + 1
self.width = font.query_text_extents(prompt).overall_width + \
font.query_text_extents(length * 'm').overall_width
self.baseline = size.font_ascent + 1
window = screen.root.create_window(0, 0, self.width, self.height,
self.borderwidth,
X.CopyFromParent, X.InputOutput,
X.CopyFromParent,
background_pixel = bg,
border_pixel = bc,
event_mask = (X.VisibilityChangeMask |
X.ExposureMask))
self.gc = window.create_gc(font = font, function = X.GXinvert,
foreground = fg, background = bg)
self.font = font
self.window = screen.add_internal_window(window)
self.window.dispatch.add_handler(X.VisibilityNotify, self.raisewindow)
self.window.dispatch.add_handler(X.Expose, self.redraw)
def read(self, action, handlertype, x=0, y=0):
"Open the window at x, y, using handlertype, and doing action."
self.action = action
x, y, width, height = self.window.keep_on_screen(x, y, self.width, self.height)
self.window.configure(x = x, y = y, width = width, height = height)
self.window.map()
self.window.get_focus(X.CurrentTime)
handlertype(self.window, self, self.history)
def raisewindow(self, event):
self.window.raisewindow()
def redraw(self, event = None):
length = len(self.string)
if self.offset < length:
wide = self.font.query_text_extents(self.string[self.offset]).overall_width
else:
wide = self.font.query_text_extents(' ').overall_width
if self.start >= self.offset: self.start = self.offset - 1
left = self.font.query_text_extents(self.string[self.start:self.offset]).overall_width
if left + wide >= self.width:
self.start = self.offset - self.length + 1
left = self.font.query_text_extents(self.string[self.start:self.offset]).overall_width
self.window.clear_area(width = self.width, height = self.height)
self.window.image_text(self.gc, 0, self.baseline, self.string[self.start:])
self.window.fill_rectangle(self.gc, left, 0, wide, self.height)
def show(self, left, right):
if left:
self.string = self.prompt + left
else: # Display the prompt in this case.
self.string = self.prompt
self.start = 0
self.offset = len(self.string)
self.string = self.string + right
self.redraw()
def do(self, string):
self.action(string)
self.window.destroy()
def abort(self):
self.window.destroy()
class modeInput:
"Class to get input via the modewindow."
history = []
def __init__(self, prompt, screen, length = None):
# ignore length argument
self.prompt = prompt
self.screen = screen
def read(self, action, handlertype, x = 0, y = 0):
self.action = action
self.status_msg = self.screen.modestatus_new(self.prompt + "_")
handlertype(self.screen.modewindow_mw.window, self, self.history)
def show(self, left, right):
self.status_msg.set("%s%s_%s" % (self.prompt, left, right))
def do(self, string):
self.action(string)
self.status_msg.pop()
def abort(self):
self.status_msg.pop()
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