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|
import copy
import urwid
import common
from .. import utils
def _mkhelp():
text = []
keys = [
("A", "insert row before cursor"),
("a", "add row after cursor"),
("d", "delete row"),
("e", "spawn external editor on current field"),
("q", "return to flow view"),
("esc", "return to flow view/exit field edit mode"),
("tab", "next field"),
("enter", "edit field"),
]
text.extend(common.format_keyvals(keys, key="key", val="text", indent=4))
return text
help_context = _mkhelp()
class SText(common.WWrap):
def __init__(self, txt, focused):
w = urwid.Text(txt, wrap="any")
if focused:
w = urwid.AttrWrap(w, "focusfield")
common.WWrap.__init__(self, w)
def get_text(self):
return self.w.get_text()[0]
def keypress(self, size, key):
return key
def selectable(self):
return True
class SEdit(common.WWrap):
def __init__(self, txt):
w = urwid.Edit(edit_text=txt, wrap="any", multiline=True)
w = urwid.AttrWrap(w, "editfield")
common.WWrap.__init__(self, w)
def get_text(self):
return self.w.get_text()[0]
def selectable(self):
return True
class KVItem(common.WWrap):
def __init__(self, focused, editing, maxk, k, v):
self.focused, self.editing, self.maxk = focused, editing, maxk
if focused == 0 and editing:
self.editing = self.kf = SEdit(k)
else:
self.kf = SText(k, True if focused == 0 else False)
if focused == 1 and editing:
self.editing = self.vf = SEdit(v)
else:
self.vf = SText(v, True if focused == 1 else False)
w = urwid.Columns(
[
("fixed", maxk + 2, self.kf),
self.vf
],
dividechars = 2
)
if focused is not None:
w.set_focus_column(focused)
common.WWrap.__init__(self, w)
def get_kv(self):
return (self.kf.get_text(), self.vf.get_text())
def keypress(self, s, k):
if self.editing:
k = self.editing.keypress((s[0]-self.maxk-4,), k)
return k
def selectable(self):
return True
KEY_MAX = 30
class KVWalker(urwid.ListWalker):
def __init__(self, lst, editor):
self.lst, self.editor = lst, editor
self.maxk = min(max(len(v[0]) for v in lst), KEY_MAX) if lst else 20
if self.maxk < 20:
self.maxk = 20
self.focus = 0
self.focus_col = 0
self.editing = False
def _modified(self):
self.editor.show_empty_msg()
return urwid.ListWalker._modified(self)
def get_current_value(self):
if self.lst:
return self.lst[self.focus][self.focus_col]
def set_current_value(self, val):
row = list(self.lst[self.focus])
row[self.focus_col] = val
self.lst[self.focus] = tuple(row)
def delete_focus(self):
if self.lst:
del self.lst[self.focus]
self.focus = min(len(self.lst)-1, self.focus)
self._modified()
def _insert(self, pos):
self.focus = pos
self.lst.insert(self.focus, ("", ""))
self.focus_col = 0
self.start_edit()
def insert(self):
return self._insert(self.focus)
def add(self):
return self._insert(min(self.focus + 1, len(self.lst)))
def start_edit(self):
if self.lst:
self.editing = KVItem(self.focus_col, True, self.maxk, *self.lst[self.focus])
self._modified()
def stop_edit(self):
if self.editing:
self.lst[self.focus] = self.editing.get_kv()
self.editing = False
self._modified()
def left(self):
self.focus_col = 0
self._modified()
def right(self):
self.focus_col = 1
self._modified()
def tab_next(self):
self.stop_edit()
if self.focus_col == 0:
self.focus_col = 1
elif self.focus != len(self.lst)-1:
self.focus_col = 0
self.focus += 1
self._modified()
def get_focus(self):
if self.editing:
return self.editing, self.focus
elif self.lst:
return KVItem(self.focus_col, False, self.maxk, *self.lst[self.focus]), self.focus
else:
return None, None
def set_focus(self, focus):
self.stop_edit()
self.focus = focus
def get_next(self, pos):
if pos+1 >= len(self.lst):
return None, None
return KVItem(None, False, self.maxk, *self.lst[pos+1]), pos+1
def get_prev(self, pos):
if pos-1 < 0:
return None, None
return KVItem(None, False, self.maxk, *self.lst[pos-1]), pos-1
class KVListBox(urwid.ListBox):
def __init__(self, lw):
urwid.ListBox.__init__(self, lw)
class KVEditor(common.WWrap):
def __init__(self, master, title, value, callback, *cb_args, **cb_kwargs):
value = copy.deepcopy(value)
self.master, self.title, self.value, self.callback = master, title, value, callback
self.cb_args, self.cb_kwargs = cb_args, cb_kwargs
p = urwid.Text(title)
p = urwid.Padding(p, align="left", width=("relative", 100))
p = urwid.AttrWrap(p, "heading")
self.walker = KVWalker(self.value, self)
self.lb = KVListBox(self.walker)
self.w = urwid.Frame(self.lb, header = p)
self.master.statusbar.update("")
self.show_empty_msg()
def show_empty_msg(self):
if self.walker.lst:
self.w.set_footer(None)
else:
self.w.set_footer(
urwid.Text(
[
("highlight", "No values. Press "),
("key", "a"),
("highlight", " to add some."),
]
)
)
def keypress(self, size, key):
if self.walker.editing:
if key in ["esc", "enter"]:
self.walker.stop_edit()
elif key == "tab":
pf, pfc = self.walker.focus, self.walker.focus_col
self.walker.tab_next()
if self.walker.focus == pf and self.walker.focus_col != pfc:
self.walker.start_edit()
else:
self.w.keypress(size, key)
return None
key = common.shortcuts(key)
if key in ["q", "esc"]:
self.callback(self.walker.lst, *self.cb_args, **self.cb_kwargs)
self.master.pop_view()
elif key in ["h", "left"]:
self.walker.left()
elif key in ["l", "right"]:
self.walker.right()
elif key == "tab":
self.walker.tab_next()
elif key == "a":
self.walker.add()
elif key == "A":
self.walker.insert()
elif key == "d":
self.walker.delete_focus()
elif key == "e":
o = self.walker.get_current_value()
if o is not None:
n = self.master.spawn_editor(o)
n = utils.clean_hanging_newline(n)
self.walker.set_current_value(n)
self.walker._modified()
elif key in ["enter"]:
self.walker.start_edit()
else:
return self.w.keypress(size, key)
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