file reorganization with top-level module
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Janus
250
electrum/gui/qt/paytoedit.py
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250
electrum/gui/qt/paytoedit.py
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#!/usr/bin/env python
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#
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# Electrum - lightweight Bitcoin client
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# Copyright (C) 2012 thomasv@gitorious
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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from PyQt5.QtGui import *
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import re
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from decimal import Decimal
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from electrum import bitcoin
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from electrum.util import bfh
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from .qrtextedit import ScanQRTextEdit
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from .completion_text_edit import CompletionTextEdit
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from . import util
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RE_ADDRESS = '[1-9A-HJ-NP-Za-km-z]{26,}'
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RE_ALIAS = '(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>'
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frozen_style = "QWidget { background-color:none; border:none;}"
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normal_style = "QPlainTextEdit { }"
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class PayToEdit(CompletionTextEdit, ScanQRTextEdit):
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def __init__(self, win):
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CompletionTextEdit.__init__(self)
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ScanQRTextEdit.__init__(self)
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self.win = win
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self.amount_edit = win.amount_e
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self.document().contentsChanged.connect(self.update_size)
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self.heightMin = 0
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self.heightMax = 150
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self.c = None
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self.textChanged.connect(self.check_text)
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self.outputs = []
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self.errors = []
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self.is_pr = False
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self.is_alias = False
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self.scan_f = win.pay_to_URI
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self.update_size()
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self.payto_address = None
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self.previous_payto = ''
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def setFrozen(self, b):
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self.setReadOnly(b)
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self.setStyleSheet(frozen_style if b else normal_style)
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for button in self.buttons:
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button.setHidden(b)
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def setGreen(self):
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self.setStyleSheet(util.ColorScheme.GREEN.as_stylesheet(True))
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def setExpired(self):
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self.setStyleSheet(util.ColorScheme.RED.as_stylesheet(True))
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def parse_address_and_amount(self, line):
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x, y = line.split(',')
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out_type, out = self.parse_output(x)
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amount = self.parse_amount(y)
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return out_type, out, amount
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def parse_output(self, x):
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try:
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address = self.parse_address(x)
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return bitcoin.TYPE_ADDRESS, address
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except:
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script = self.parse_script(x)
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return bitcoin.TYPE_SCRIPT, script
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def parse_script(self, x):
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from electrum.transaction import opcodes, push_script
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script = ''
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for word in x.split():
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if word[0:3] == 'OP_':
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assert word in opcodes.lookup
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opcode_int = opcodes.lookup[word]
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assert opcode_int < 256 # opcode is single-byte
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script += bitcoin.int_to_hex(opcode_int)
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else:
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bfh(word) # to test it is hex data
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script += push_script(word)
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return script
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def parse_amount(self, x):
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if x.strip() == '!':
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return '!'
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p = pow(10, self.amount_edit.decimal_point())
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return int(p * Decimal(x.strip()))
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def parse_address(self, line):
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r = line.strip()
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m = re.match('^'+RE_ALIAS+'$', r)
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address = str(m.group(2) if m else r)
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assert bitcoin.is_address(address)
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return address
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def check_text(self):
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self.errors = []
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if self.is_pr:
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return
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# filter out empty lines
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lines = [i for i in self.lines() if i]
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outputs = []
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total = 0
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self.payto_address = None
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if len(lines) == 1:
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data = lines[0]
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if data.startswith("bitcoin:"):
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self.scan_f(data)
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return
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try:
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self.payto_address = self.parse_output(data)
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except:
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pass
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if self.payto_address:
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self.win.lock_amount(False)
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return
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is_max = False
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for i, line in enumerate(lines):
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try:
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_type, to_address, amount = self.parse_address_and_amount(line)
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except:
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self.errors.append((i, line.strip()))
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continue
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outputs.append((_type, to_address, amount))
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if amount == '!':
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is_max = True
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else:
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total += amount
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self.win.is_max = is_max
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self.outputs = outputs
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self.payto_address = None
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if self.win.is_max:
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self.win.do_update_fee()
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else:
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self.amount_edit.setAmount(total if outputs else None)
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self.win.lock_amount(total or len(lines)>1)
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def get_errors(self):
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return self.errors
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def get_recipient(self):
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return self.payto_address
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def get_outputs(self, is_max):
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if self.payto_address:
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if is_max:
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amount = '!'
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else:
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amount = self.amount_edit.get_amount()
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_type, addr = self.payto_address
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self.outputs = [(_type, addr, amount)]
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return self.outputs[:]
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def lines(self):
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return self.toPlainText().split('\n')
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def is_multiline(self):
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return len(self.lines()) > 1
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def paytomany(self):
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self.setText("\n\n\n")
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self.update_size()
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def update_size(self):
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lineHeight = QFontMetrics(self.document().defaultFont()).height()
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docHeight = self.document().size().height()
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h = docHeight * lineHeight + 11
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if self.heightMin <= h <= self.heightMax:
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self.setMinimumHeight(h)
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self.setMaximumHeight(h)
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self.verticalScrollBar().hide()
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def qr_input(self):
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data = super(PayToEdit,self).qr_input()
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if data.startswith("bitcoin:"):
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self.scan_f(data)
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# TODO: update fee
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def resolve(self):
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self.is_alias = False
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if self.hasFocus():
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return
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if self.is_multiline(): # only supports single line entries atm
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return
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if self.is_pr:
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return
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key = str(self.toPlainText())
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if key == self.previous_payto:
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return
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self.previous_payto = key
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if not (('.' in key) and (not '<' in key) and (not ' ' in key)):
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return
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parts = key.split(sep=',') # assuming single line
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if parts and len(parts) > 0 and bitcoin.is_address(parts[0]):
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return
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try:
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data = self.win.contacts.resolve(key)
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except:
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return
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if not data:
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return
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self.is_alias = True
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address = data.get('address')
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name = data.get('name')
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new_url = key + ' <' + address + '>'
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self.setText(new_url)
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self.previous_payto = new_url
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#if self.win.config.get('openalias_autoadd') == 'checked':
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self.win.contacts[key] = ('openalias', name)
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self.win.contact_list.on_update()
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self.setFrozen(True)
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if data.get('type') == 'openalias':
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self.validated = data.get('validated')
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if self.validated:
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self.setGreen()
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else:
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self.setExpired()
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else:
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self.validated = None
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