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 = "QPlainTextEdit { }"
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)
43 self.textChanged.connect(self.check_text)
46 self.scan_f = self.win.pay_from_URI
48 self.payto_address = None
50 def lock_amount(self):
51 self.amount_edit.setFrozen(True)
53 def unlock_amount(self):
54 self.amount_edit.setFrozen(False)
56 def setFrozen(self, b):
58 self.setStyleSheet(frozen_style if b else normal_style)
59 self.button.setHidden(b)
63 self.setStyleSheet("QWidget { background-color:#80ff80;}")
67 self.setStyleSheet("QWidget { background-color:#ffcccc;}")
69 def parse_address_and_amount(self, line):
70 m = re.match('^OP_RETURN\s+"(.+)"$', line.strip())
72 address = 'OP_RETURN:' + m.group(1)
75 x, y = line.split(',')
76 address = self.parse_address(x)
77 amount = self.parse_amount(y)
78 return address, amount
81 def parse_amount(self, x):
82 p = pow(10, self.amount_edit.decimal_point())
83 return int( p * Decimal(x.strip()))
86 def parse_address(self, line):
88 m = re.match('^'+RE_ALIAS+'$', r)
89 address = m.group(2) if m else r
90 assert bitcoin.is_address(address)
98 # filter out empty lines
99 lines = filter( lambda x: x, self.lines())
103 self.payto_address = None
107 self.payto_address = self.parse_address(lines[0])
111 if self.payto_address:
117 to_address, amount = self.parse_address_and_amount(line)
121 outputs.append((to_address, amount))
124 self.outputs = outputs
125 self.payto_address = None
128 self.amount_edit.setAmount(total)
130 self.amount_edit.setText("")
132 self.amount_edit.textEdited.emit("")
134 if total or len(lines)>1:
140 def get_outputs(self):
141 if self.payto_address:
143 amount = self.amount_edit.get_amount()
147 self.outputs = [(self.payto_address, amount)]
149 return self.outputs[:]
153 return str(self.toPlainText()).split('\n')
156 def is_multiline(self):
157 return len(self.lines()) > 1
160 def update_size(self):
161 docHeight = self.document().size().height()
162 h = docHeight*17 + 11
163 if self.heightMin <= h <= self.heightMax:
164 self.setMinimumHeight(h)
165 self.setMaximumHeight(h)
166 self.verticalScrollBar().hide()
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 QPlainTextEdit.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())