add initial channel close dialog

electrum/gui/qml/components/ChannelDetails.qml

@@ -31,17 +31,11 @@ Pane {
             icon.color: 'transparent'
             action: Action {
                 text: qsTr('Close channel');
-                enabled: false
-                onTriggered: {}
-                //icon.source: '../../icons/wallet.png'
-            }
-        }
-        MenuItem {
-            icon.color: 'transparent'
-            action: Action {
-                text: qsTr('Force-close');
-                enabled: false
-                onTriggered: {}
+                enabled: channeldetails.canClose
+                onTriggered: {
+                    var dialog = closechannel.createObject(root, { 'channelid': channelid })
+                    dialog.open()
+                }
                 //icon.source: '../../icons/wallet.png'
             }
         }
@@ -245,4 +239,9 @@ Pane {
         id: share
         GenericShareDialog {}
     }
+
+    Component {
+        id: closechannel
+        CloseChannelDialog {}
+    }
 }

electrum/gui/qml/components/CloseChannelDialog.qml

@@ -0,0 +1,130 @@
+import QtQuick 2.6
+import QtQuick.Layouts 1.0
+import QtQuick.Controls 2.3
+import QtQuick.Controls.Material 2.0
+
+import org.electrum 1.0
+
+import "controls"
+
+Dialog {
+    id: dialog
+    width: parent.width
+    height: parent.height
+
+    property string channelid
+
+    title: qsTr('Close Channel')
+    standardButtons: closing ? 0 : Dialog.Cancel
+
+    modal: true
+    parent: Overlay.overlay
+    Overlay.modal: Rectangle {
+        color: "#aa000000"
+    }
+    property bool closing: false
+
+    closePolicy: Popup.NoAutoClose
+
+    GridLayout {
+        id: layout
+        width: parent.width
+        height: parent.height
+        columns: 2
+
+        Label {
+            text: qsTr('Channel name')
+            color: Material.accentColor
+        }
+
+        Label {
+            text: channeldetails.name
+        }
+
+        Label {
+            text: qsTr('Short channel ID')
+            color: Material.accentColor
+        }
+
+        Label {
+            text: channeldetails.short_cid
+        }
+
+        InfoTextArea {
+            Layout.columnSpan: 2
+            text: qsTr(channeldetails.message_force_close)
+        }
+
+        ColumnLayout {
+            Layout.columnSpan: 2
+            Layout.alignment: Qt.AlignHCenter
+
+            ButtonGroup {
+                id: closetypegroup
+            }
+
+            RadioButton {
+                ButtonGroup.group: closetypegroup
+                property string closetype: 'cooperative'
+                checked: true
+                enabled: !closing && channeldetails.canCoopClose
+                text: qsTr('Cooperative close')
+            }
+            RadioButton {
+                ButtonGroup.group: closetypegroup
+                property string closetype: 'force'
+                enabled: !closing && channeldetails.canForceClose
+                text: qsTr('Request Force-close')
+            }
+        }
+
+        Button {
+            Layout.columnSpan: 2
+            Layout.alignment: Qt.AlignHCenter
+            text: qsTr('Close')
+            enabled: !closing
+            onClicked: {
+                closing = true
+                channeldetails.close_channel(closetypegroup.checkedButton.closetype)
+            }
+
+        }
+
+        ColumnLayout {
+            Layout.columnSpan: 2
+            Layout.alignment: Qt.AlignHCenter
+            Label {
+                id: errorText
+                visible: !closing && errorText
+                wrapMode: Text.Wrap
+                Layout.preferredWidth: layout.width
+            }
+            Label {
+                text: qsTr('Closing...')
+                visible: closing
+            }
+            BusyIndicator {
+                visible: closing
+            }
+        }
+        Item { Layout.fillHeight: true; Layout.preferredWidth: 1 }
+
+    }
+
+    ChannelDetails {
+        id: channeldetails
+        wallet: Daemon.currentWallet
+        channelid: dialog.channelid
+
+        onChannelCloseSuccess: {
+            closing = false
+            dialog.close()
+        }
+
+        onChannelCloseFailed: {
+            closing = false
+            errorText.text = message
+        }
+    }
+
+}

electrum/gui/qml/qechanneldetails.py

@@ -1,8 +1,13 @@
+import asyncio
+
 from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, QObject, Q_ENUMS
 
+from electrum.i18n import _
+from electrum.gui import messages
 from electrum.logging import get_logger
 from electrum.util import register_callback, unregister_callback
 from electrum.lnutil import LOCAL, REMOTE
+from electrum.lnchannel import ChanCloseOption
 
 from .qewallet import QEWallet
 from .qetypes import QEAmount
@@ -15,6 +20,8 @@ class QEChannelDetails(QObject):
     _channel = None
 
     channelChanged = pyqtSignal()
+    channelCloseSuccess = pyqtSignal()
+    channelCloseFailed = pyqtSignal([str], arguments=['message'])
 
     def __init__(self, parent=None):
         super().__init__(parent)
@@ -57,7 +64,7 @@ class QEChannelDetails(QObject):
     def load(self):
         lnchannels = self._wallet.wallet.lnworker.channels
         for channel in lnchannels.values():
-            self._logger.debug('%s == %s ?' % (self._channelid, channel.channel_id))
+            #self._logger.debug('%s == %s ?' % (self._channelid, channel.channel_id))
             if self._channelid == channel.channel_id.hex():
                 self._channel = channel
                 self.channelChanged.emit()
@@ -115,22 +122,54 @@ class QEChannelDetails(QObject):
     def isOpen(self):
         return self._channel.is_open()
 
+    @pyqtProperty(bool, notify=channelChanged)
+    def canClose(self):
+        return self.canCoopClose or self.canForceClose
+
+    @pyqtProperty(bool, notify=channelChanged)
+    def canCoopClose(self):
+        return ChanCloseOption.COOP_CLOSE in self._channel.get_close_options()
+
+    @pyqtProperty(bool, notify=channelChanged)
+    def canForceClose(self):
+        return ChanCloseOption.LOCAL_FCLOSE in self._channel.get_close_options()
+
+    @pyqtProperty(str, notify=channelChanged)
+    def message_force_close(self, notify=channelChanged):
+        return _(messages.MSG_REQUEST_FORCE_CLOSE)
+
     @pyqtSlot()
     def freezeForSending(self):
         lnworker = self._channel.lnworker
         if lnworker.channel_db or lnworker.is_trampoline_peer(self._channel.node_id):
-            #self.is_frozen_for_sending = not self.is_frozen_for_sending
             self._channel.set_frozen_for_sending(not self.frozenForSending)
             self.channelChanged.emit()
         else:
-            self._logger.debug('TODO: messages.MSG_NON_TRAMPOLINE_CHANNEL_FROZEN_WITHOUT_GOSSIP')
+            self._logger.debug(messages.MSG_NON_TRAMPOLINE_CHANNEL_FROZEN_WITHOUT_GOSSIP)
 
     @pyqtSlot()
     def freezeForReceiving(self):
         lnworker = self._channel.lnworker
         if lnworker.channel_db or lnworker.is_trampoline_peer(self._channel.node_id):
-            #self.is_frozen_for_sending = not self.is_frozen_for_sending
             self._channel.set_frozen_for_receiving(not self.frozenForReceiving)
             self.channelChanged.emit()
         else:
-            self._logger.debug('TODO: messages.MSG_NON_TRAMPOLINE_CHANNEL_FROZEN_WITHOUT_GOSSIP')
+            self._logger.debug(messages.MSG_NON_TRAMPOLINE_CHANNEL_FROZEN_WITHOUT_GOSSIP)
+
+    # this method assumes the qobject is not destroyed before the close either fails or succeeds
+    @pyqtSlot(str)
+    def close_channel(self, closetype):
+        async def do_close(closetype, channel_id):
+            try:
+                if closetype == 'force':
+                    await self._wallet.wallet.lnworker.request_force_close(channel_id)
+                else:
+                    await self._wallet.wallet.lnworker.close_channel(channel_id)
+                self.channelCloseSuccess.emit()
+            except Exception as e:
+                self._logger.exception("Could not close channel: " + repr(e))
+                self.channelCloseFailed.emit(_('Could not close channel: ') + repr(e))
+
+        loop = self._wallet.wallet.network.asyncio_loop
+        coro = do_close(closetype, self._channel.channel_id)
+        asyncio.run_coroutine_threadsafe(coro, loop)

electrum/gui/qml/qechannellistmodel.py

@@ -117,7 +117,7 @@ class QEChannelListModel(QAbstractListModel):
     def on_channel_updated(self, channel):
         i = 0
         for c in self.channels:
-            if c['cid'] == channel.channel_id:
+            if c['cid'] == channel.channel_id.hex():
                 self.do_update(i,channel)
                 break
             i = i + 1