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294 lines
10 KiB
294 lines
10 KiB
#!/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 functools import partial |
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from typing import Optional, TYPE_CHECKING |
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from PyQt6.QtCore import Qt, QTimer, QSize |
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from PyQt6.QtCore import QObject, pyqtSignal |
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from PyQt6.QtGui import QFontMetrics, QFont |
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from PyQt6.QtWidgets import QApplication, QTextEdit, QWidget, QLineEdit, QStackedLayout, QSizePolicy |
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from electrum.payment_identifier import PaymentIdentifier |
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from electrum.logging import Logger |
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from . import util |
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from .util import MONOSPACE_FONT, GenericInputHandler, editor_contextMenuEvent, ColorScheme |
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if TYPE_CHECKING: |
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from .send_tab import SendTab |
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frozen_style = "QWidget {border:none;}" |
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normal_style = "QPlainTextEdit { }" |
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class InvalidPaymentIdentifier(Exception): |
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pass |
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class ResizingTextEdit(QTextEdit): |
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textReallyChanged = pyqtSignal() |
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resized = pyqtSignal() |
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def __init__(self): |
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QTextEdit.__init__(self) |
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self._text = '' |
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self.setAcceptRichText(False) |
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self.textChanged.connect(self.on_text_changed) |
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document = self.document() |
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fontMetrics = QFontMetrics(document.defaultFont()) |
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self.fontSpacing = fontMetrics.lineSpacing() |
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margins = self.contentsMargins() |
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documentMargin = document.documentMargin() |
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self.verticalMargins = margins.top() + margins.bottom() |
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self.verticalMargins += self.frameWidth() * 2 |
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self.verticalMargins += documentMargin * 2 |
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self.heightMin = self.fontSpacing + self.verticalMargins |
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self.heightMax = (self.fontSpacing * 10) + self.verticalMargins |
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self.update_size() |
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def on_text_changed(self): |
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# QTextEdit emits spurious textChanged events |
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if self.toPlainText() != self._text: |
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self._text = self.toPlainText() |
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self.textReallyChanged.emit() |
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self.update_size() |
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def update_size(self): |
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docLineCount = self.document().lineCount() |
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docHeight = max(3, docLineCount) * self.fontSpacing |
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h = docHeight + self.verticalMargins |
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h = min(max(h, self.heightMin), self.heightMax) |
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self.setMinimumHeight(int(h)) |
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self.setMaximumHeight(int(h)) |
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self.setHorizontalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAsNeeded) |
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self.verticalScrollBar().setHidden(docHeight + self.verticalMargins < self.heightMax) |
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self.setLineWrapMode(QTextEdit.LineWrapMode.WidgetWidth) |
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self.resized.emit() |
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def sizeHint(self) -> QSize: |
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return QSize(0, self.minimumHeight()) |
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class PayToEdit(QWidget, Logger, GenericInputHandler): |
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paymentIdentifierChanged = pyqtSignal() |
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textChanged = pyqtSignal() |
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def __init__(self, send_tab: 'SendTab'): |
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QWidget.__init__(self, parent=send_tab) |
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Logger.__init__(self) |
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GenericInputHandler.__init__(self) |
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self._text = '' |
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self._layout = QStackedLayout() |
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self.setLayout(self._layout) |
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def text_edit_changed(): |
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text = self.text_edit.toPlainText() |
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if self._text != text: |
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# sync and emit |
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self._text = text |
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self.line_edit.setText(text) |
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self.textChanged.emit() |
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def text_edit_resized(): |
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self.update_height() |
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def line_edit_changed(): |
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text = self.line_edit.text() |
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if self._text != text: |
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# sync and emit |
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self._text = text |
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self.text_edit.setPlainText(text) |
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self.textChanged.emit() |
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self.line_edit = QLineEdit() |
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self.line_edit.textChanged.connect(line_edit_changed) |
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self.text_edit = ResizingTextEdit() |
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self.text_edit.setTabChangesFocus(True) |
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self.text_edit.textReallyChanged.connect(text_edit_changed) |
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self.text_edit.resized.connect(text_edit_resized) |
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self.textChanged.connect(self._handle_text_change) |
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self._layout.addWidget(self.line_edit) |
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self._layout.addWidget(self.text_edit) |
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self.multiline = False |
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self._is_paytomany = False |
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self.line_edit.setFont(QFont(MONOSPACE_FONT)) |
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self.text_edit.setFont(QFont(MONOSPACE_FONT)) |
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self.send_tab = send_tab |
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self.config = send_tab.config |
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# button handlers |
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self.on_qr_from_camera_input_btn = partial( |
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self.input_qr_from_camera, |
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config=self.config, |
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allow_multi=False, |
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show_error=self.send_tab.show_error, |
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setText=self.try_payment_identifier, |
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parent=self.send_tab.window, |
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) |
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self.on_qr_from_screenshot_input_btn = partial( |
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self.input_qr_from_screenshot, |
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allow_multi=False, |
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show_error=self.send_tab.show_error, |
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setText=self.try_payment_identifier, |
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) |
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self.on_input_file = partial( |
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self.input_file, |
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config=self.config, |
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show_error=self.send_tab.show_error, |
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setText=self.try_payment_identifier, |
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) |
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self.text_edit.contextMenuEvent = partial(editor_contextMenuEvent, self.text_edit, self) |
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self.line_edit.contextMenuEvent = partial(editor_contextMenuEvent, self.line_edit, self) |
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self.edit_timer = QTimer(self) |
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self.edit_timer.setSingleShot(True) |
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self.edit_timer.setInterval(1000) |
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self.edit_timer.timeout.connect(self._on_edit_timer) |
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self.payment_identifier = None # type: Optional[PaymentIdentifier] |
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@property |
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def multiline(self): |
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return self._multiline |
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@multiline.setter |
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def multiline(self, b: bool) -> None: |
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if b is None: |
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return |
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self._multiline = b |
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self._layout.setCurrentWidget(self.text_edit if b else self.line_edit) |
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self.update_height() |
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def update_height(self) -> None: |
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h = self._layout.currentWidget().sizeHint().height() |
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self.setMaximumHeight(h) |
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def setText(self, text: str) -> None: |
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if self._text != text: |
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self.line_edit.setText(text) |
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self.text_edit.setText(text) |
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def setFocus(self, reason=Qt.FocusReason.OtherFocusReason) -> None: |
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if self.multiline: |
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self.text_edit.setFocus(reason) |
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else: |
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self.line_edit.setFocus(reason) |
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def setToolTip(self, tt: str) -> None: |
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self.line_edit.setToolTip(tt) |
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self.text_edit.setToolTip(tt) |
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def try_payment_identifier(self, text) -> None: |
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'''set payment identifier only if valid, else exception''' |
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text = text.strip() |
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pi = PaymentIdentifier(self.send_tab.wallet, text) |
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if not pi.is_valid(): |
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raise InvalidPaymentIdentifier('Invalid payment identifier') |
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self.set_payment_identifier(text) |
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def set_payment_identifier(self, text) -> None: |
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text = text.strip() |
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if self.payment_identifier and self.payment_identifier.text == text: |
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# no change. |
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return |
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self.payment_identifier = PaymentIdentifier(self.send_tab.wallet, text) |
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# toggle to multiline if payment identifier is a multiline |
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if self.payment_identifier.is_multiline() and not self._is_paytomany: |
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self.set_paytomany(True) |
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# if payment identifier gets set externally, we want to update the edit control |
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# Note: this triggers the change handler, but we shortcut if it's the same payment identifier |
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self.setText(text) |
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self.paymentIdentifierChanged.emit() |
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def set_paytomany(self, b): |
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self._is_paytomany = b |
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self.multiline = b |
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self.send_tab.paytomany_menu.setChecked(b) |
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def toggle_paytomany(self) -> None: |
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self.set_paytomany(not self._is_paytomany) |
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def is_paytomany(self): |
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return self._is_paytomany |
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def setReadOnly(self, b: bool) -> None: |
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self.line_edit.setReadOnly(b) |
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self.text_edit.setReadOnly(b) |
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def isReadOnly(self): |
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return self.line_edit.isReadOnly() |
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def setStyleSheet(self, stylesheet: str) -> None: |
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self.line_edit.setStyleSheet(stylesheet) |
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self.text_edit.setStyleSheet(stylesheet) |
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def setFrozen(self, b) -> None: |
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self.setReadOnly(b) |
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self.setStyleSheet(ColorScheme.LIGHTBLUE.as_stylesheet(True) if b else '') |
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def isFrozen(self): |
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return self.isReadOnly() |
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def do_clear(self) -> None: |
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self.set_paytomany(False) |
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self.setText('') |
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self.setToolTip('') |
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self.payment_identifier = None |
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def setGreen(self) -> None: |
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self.setStyleSheet(util.ColorScheme.GREEN.as_stylesheet(True)) |
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def setExpired(self) -> None: |
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self.setStyleSheet(util.ColorScheme.RED.as_stylesheet(True)) |
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def _handle_text_change(self) -> None: |
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if self.isFrozen(): |
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# if editor is frozen, we ignore text changes as they might not be a payment identifier |
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# but a user friendly representation. |
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return |
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# pushback timer if timer active or PI needs resolving |
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pi = PaymentIdentifier(self.send_tab.wallet, self._text) |
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if not pi.is_valid() or pi.need_resolve() or self.edit_timer.isActive(): |
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self.edit_timer.start() |
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else: |
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self.set_payment_identifier(self._text) |
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def _on_edit_timer(self) -> None: |
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if not self.isFrozen(): |
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self.set_payment_identifier(self._text)
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