3 # Electrum - lightweight Bitcoin client
4 # Copyright (C) 2012 thomasv@gitorious
6 # This program is free software: you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation, either version 3 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
19 from PyQt4.QtCore import *
20 from PyQt4.QtGui import *
21 from qrtextedit import QRTextEdit
24 from decimal import Decimal
25 from electrum import bitcoin
27 RE_ADDRESS = '[1-9A-HJ-NP-Za-km-z]{26,}'
28 RE_ALIAS = '(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>'
30 frozen_style = "QWidget { background-color:none; border:none;}"
31 normal_style = "QTextEdit { }"
33 class PayToEdit(QRTextEdit):
35 def __init__(self, win):
36 QRTextEdit.__init__(self)
38 self.amount_edit = win.amount_e
39 self.document().contentsChanged.connect(self.update_size)
42 self.setMinimumHeight(27)
43 self.setMaximumHeight(27)
45 self.textChanged.connect(self.check_text)
48 self.scan_f = self.win.pay_from_URI
50 self.payto_address = None
52 def lock_amount(self):
53 self.amount_edit.setFrozen(True)
55 def unlock_amount(self):
56 self.amount_edit.setFrozen(False)
58 def setFrozen(self, b):
60 self.setStyleSheet(frozen_style if b else normal_style)
61 self.button.setHidden(b)
65 self.setStyleSheet("QWidget { background-color:#80ff80;}")
69 self.setStyleSheet("QWidget { background-color:#ffcccc;}")
71 def parse_address_and_amount(self, line):
72 m = re.match('^OP_RETURN\s+"(.+)"$', line.strip())
74 address = 'OP_RETURN:' + m.group(1)
77 x, y = line.split(',')
78 address = self.parse_address(x)
79 amount = self.parse_amount(y)
80 return address, amount
83 def parse_amount(self, x):
84 p = pow(10, self.amount_edit.decimal_point())
85 return int( p * Decimal(x.strip()))
88 def parse_address(self, line):
90 m = re.match('^'+RE_ALIAS+'$', r)
91 address = m.group(2) if m else r
92 assert bitcoin.is_address(address)
100 # filter out empty lines
101 lines = filter( lambda x: x, self.lines())
105 self.payto_address = None
109 self.payto_address = self.parse_address(lines[0])
113 if self.payto_address:
119 to_address, amount = self.parse_address_and_amount(line)
123 outputs.append((to_address, amount))
126 self.outputs = outputs
127 self.payto_address = None
130 self.amount_edit.setAmount(total)
132 self.amount_edit.setText("")
134 self.amount_edit.textEdited.emit("")
136 if total or len(lines)>1:
142 def get_outputs(self):
143 if self.payto_address:
145 amount = self.amount_edit.get_amount()
149 self.outputs = [(self.payto_address, amount)]
151 return self.outputs[:]
155 return str(self.toPlainText()).split('\n')
158 def is_multiline(self):
159 return len(self.lines()) > 1
162 def update_size(self):
163 docHeight = self.document().size().height()
164 if self.heightMin <= docHeight <= self.heightMax:
165 self.setMinimumHeight(docHeight + 2)
166 self.setMaximumHeight(docHeight + 2)
169 def setCompleter(self, completer):
171 self.c.setWidget(self)
172 self.c.setCompletionMode(QCompleter.PopupCompletion)
173 self.c.activated.connect(self.insertCompletion)
176 def insertCompletion(self, completion):
177 if self.c.widget() != self:
179 tc = self.textCursor()
180 extra = completion.length() - self.c.completionPrefix().length()
181 tc.movePosition(QTextCursor.Left)
182 tc.movePosition(QTextCursor.EndOfWord)
183 tc.insertText(completion.right(extra))
184 self.setTextCursor(tc)
187 def textUnderCursor(self):
188 tc = self.textCursor()
189 tc.select(QTextCursor.WordUnderCursor)
190 return tc.selectedText()
193 def keyPressEvent(self, e):
194 if self.isReadOnly():
197 if self.c.popup().isVisible():
198 if e.key() in [Qt.Key_Enter, Qt.Key_Return]:
202 if e.key() in [Qt.Key_Tab]:
206 if e.key() in [Qt.Key_Down, Qt.Key_Up] and not self.is_multiline():
210 QTextEdit.keyPressEvent(self, e)
212 ctrlOrShift = e.modifiers() and (Qt.ControlModifier or Qt.ShiftModifier)
213 if self.c is None or (ctrlOrShift and e.text().isEmpty()):
216 eow = QString("~!@#$%^&*()_+{}|:\"<>?,./;'[]\\-=")
217 hasModifier = (e.modifiers() != Qt.NoModifier) and not ctrlOrShift;
218 completionPrefix = self.textUnderCursor()
220 if hasModifier or e.text().isEmpty() or completionPrefix.length() < 1 or eow.contains(e.text().right(1)):
221 self.c.popup().hide()
224 if completionPrefix != self.c.completionPrefix():
225 self.c.setCompletionPrefix(completionPrefix);
226 self.c.popup().setCurrentIndex(self.c.completionModel().index(0, 0))
228 cr = self.cursorRect()
229 cr.setWidth(self.c.popup().sizeHintForColumn(0) + self.c.popup().verticalScrollBar().sizeHint().width())