qml: add serverlistmodel.py, add server list to ServerConfigDialog.qml

electrum/gui/qml/components/NetworkOverview.qml

@@ -154,6 +154,7 @@ Pane {
                     text: qsTr('disabled');
                     visible: !Config.useGossip
                 }
+
             }
 
         }

electrum/gui/qml/components/ServerConfigDialog.qml

@@ -30,14 +30,44 @@ ElDialog {
         height: parent.height
         spacing: 0
 
-        ServerConfig {
-            id: serverconfig
+        ColumnLayout {
             Layout.fillWidth: true
+            Layout.fillHeight: true
             Layout.leftMargin: constants.paddingLarge
             Layout.rightMargin: constants.paddingLarge
-        }
 
-        Item { Layout.fillHeight: true; Layout.preferredWidth: 1 }
+            ServerConfig {
+                id: serverconfig
+                Layout.fillWidth: true
+            }
+
+            Label {
+                text: qsTr('Servers')
+                font.pixelSize: constants.fontSizeLarge
+                color: Material.accentColor
+            }
+
+            Rectangle {
+                Layout.fillWidth: true
+                height: 1
+                color: Material.accentColor
+            }
+
+            Frame {
+                background: PaneInsetBackground { baseColor: Material.dialogColor }
+
+                verticalPadding: 0
+                horizontalPadding: 0
+                Layout.fillHeight: true
+                Layout.fillWidth: true
+
+                ListView {
+                    anchors.fill: parent
+                    model: Network.serverListModel
+                    delegate: ServerDelegate { }
+                }
+            }
+        }
 
         FlatButton {
             Layout.fillWidth: true

electrum/gui/qml/components/controls/PaneInsetBackground.qml

@@ -2,25 +2,26 @@ import QtQuick 2.6
 import QtQuick.Controls.Material 2.0
 
 Rectangle {
+    property color baseColor: Material.background
     Rectangle {
         anchors { left: parent.left; top: parent.top; right: parent.right }
         height: 1
-        color: Qt.darker(Material.background, 1.50)
+        color: Qt.darker(baseColor, 1.50)
     }
     Rectangle {
         anchors { left: parent.left; top: parent.top; bottom: parent.bottom }
         width: 1
-        color: Qt.darker(Material.background, 1.50)
+        color: Qt.darker(baseColor, 1.50)
     }
     Rectangle {
         anchors { left: parent.left; bottom: parent.bottom; right: parent.right }
         height: 1
-        color: Qt.lighter(Material.background, 1.50)
+        color: Qt.lighter(baseColor, 1.50)
     }
     Rectangle {
         anchors { right: parent.right; top: parent.top; bottom: parent.bottom }
         width: 1
-        color: Qt.lighter(Material.background, 1.50)
+        color: Qt.lighter(baseColor, 1.50)
     }
-    color: Qt.darker(Material.background, 1.15)
+    color: Qt.darker(baseColor, 1.15)
 }

electrum/gui/qml/components/controls/ServerDelegate.qml

@@ -0,0 +1,29 @@
+import QtQuick 2.6
+import QtQuick.Controls 2.0
+import QtQuick.Layouts 1.0
+import QtQuick.Controls.Material 2.0
+
+import org.electrum 1.0
+
+ItemDelegate {
+    id: root
+    height: itemLayout.height
+    width: ListView.view.width
+
+    GridLayout {
+        id: itemLayout
+        anchors {
+            left: parent.left
+            right: parent.right
+            leftMargin: constants.paddingSmall
+            rightMargin: constants.paddingSmall
+        }
+        columns: 2
+        Label {
+            text: model.address
+        }
+        Label {
+            text: model.chain
+        }
+    }
+}

electrum/gui/qml/qenetwork.py

@@ -5,12 +5,14 @@ from electrum import constants
 from electrum.interface import ServerAddr
 
 from .util import QtEventListener, event_listener
+from .qeserverlistmodel import QEServerListModel
 
 class QENetwork(QObject, QtEventListener):
     def __init__(self, network, qeconfig, parent=None):
         super().__init__(parent)
         self.network = network
         self._qeconfig = qeconfig
+        self._serverListModel = None
         self._height = network.get_local_height() # init here, update event can take a while
         self.register_callbacks()
 
@@ -186,3 +188,10 @@ class QENetwork(QObject, QtEventListener):
             'db_channels': self._gossipDbChannels ,
             'db_policies': self._gossipDbPolicies
         }
+
+    serverListModelChanged = pyqtSignal()
+    @pyqtProperty(QEServerListModel, notify=serverListModelChanged)
+    def serverListModel(self):
+        if self._serverListModel is None:
+            self._serverListModel = QEServerListModel(self.network)
+        return self._serverListModel

electrum/gui/qml/qeserverlistmodel.py

@@ -0,0 +1,133 @@
+from abc import abstractmethod
+
+from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, QObject
+from PyQt5.QtCore import Qt, QAbstractListModel, QModelIndex
+
+from electrum.i18n import _
+from electrum.logging import get_logger
+from electrum.util import Satoshis, format_time
+from electrum.interface import ServerAddr, PREFERRED_NETWORK_PROTOCOL
+from electrum import blockchain
+
+from .util import QtEventListener, qt_event_listener, event_listener
+
+class QEServerListModel(QAbstractListModel, QtEventListener):
+    _logger = get_logger(__name__)
+    _chaintips = 0
+
+    # define listmodel rolemap
+    _ROLE_NAMES=('name', 'address', 'is_connected', 'is_primary', 'is_tor', 'chain', 'height')
+    _ROLE_KEYS = range(Qt.UserRole, Qt.UserRole + len(_ROLE_NAMES))
+    _ROLE_MAP  = dict(zip(_ROLE_KEYS, [bytearray(x.encode()) for x in _ROLE_NAMES]))
+    _ROLE_RMAP = dict(zip(_ROLE_NAMES, _ROLE_KEYS))
+
+    def __init__(self, network, parent=None):
+        super().__init__(parent)
+        self.network = network
+        self.init_model()
+        self.register_callbacks()
+        self.destroyed.connect(lambda: self.unregister_callbacks())
+
+    @event_listener
+    def on_event_network_updated(self):
+        self._logger.info(f'network updated')
+        self.init_model()
+
+    @event_listener
+    def on_event_blockchain_updated(self):
+        self._logger.info(f'blockchain updated')
+        self.init_model()
+
+    @event_listener
+    def on_event_default_server_changed(self):
+        self._logger.info(f'default server changed')
+        self.init_model()
+
+    def rowCount(self, index):
+        return len(self.servers)
+
+    def roleNames(self):
+        return self._ROLE_MAP
+
+    def data(self, index, role):
+        server = self.servers[index.row()]
+        role_index = role - Qt.UserRole
+        value = server[self._ROLE_NAMES[role_index]]
+
+        if isinstance(value, (bool, list, int, str)) or value is None:
+            return value
+        if isinstance(value, Satoshis):
+            return value.value
+        return str(value)
+
+    def clear(self):
+        self.beginResetModel()
+        self.servers = []
+        self.endResetModel()
+
+    chaintipsChanged = pyqtSignal()
+    @pyqtProperty(int, notify=chaintipsChanged)
+    def chaintips(self):
+        return self._chaintips
+
+    def get_chains(self):
+        chains = self.network.get_blockchains()
+        n_chains = len(chains)
+        if n_chains != self._chaintips:
+            self._chaintips = n_chains
+            self.chaintipsChanged.emit()
+        return chains
+
+    @pyqtSlot()
+    def init_model(self):
+        self.clear()
+
+        chains = self.get_chains()
+
+        for chain_id, interfaces in chains.items():
+            self._logger.debug(f'chain {chain_id} has {len(interfaces)} interfaces')
+            b = blockchain.blockchains.get(chain_id)
+            if b is None:
+                continue
+
+            name = b.get_name()
+
+            self._logger.debug(f'chain {chain_id} has name={name}, max_forkpoint=@{b.get_max_forkpoint()}, height={b.height()}')
+
+            for i in interfaces:
+                server = {}
+                server['chain'] = name
+                server['chain_height'] = b.height()
+                server['is_primary'] = i == self.network.interface
+                server['is_connected'] = True
+                server['name'] = str(i.server)
+                server['address'] = i.server.to_friendly_name()
+                server['height'] = i.tip
+
+                self._logger.debug(f'adding server: {repr(server)}')
+                self.servers.append(server)
+
+        # disconnected servers
+        all_servers = self.network.get_servers()
+        connected_hosts = set([iface.host for ifaces in chains.values() for iface in ifaces])
+        protocol = PREFERRED_NETWORK_PROTOCOL
+        use_tor = True
+        for _host, d in sorted(all_servers.items()):
+            if _host in connected_hosts:
+                continue
+            if _host.endswith('.onion') and not use_tor:
+                continue
+            port = d.get(protocol)
+            if port:
+                s = ServerAddr(_host, port, protocol=protocol)
+                server = {}
+                server['chain'] = ''
+                server['chain_height'] = 0
+                server['height'] = 0
+                server['is_primary'] = False
+                server['is_connected'] = False
+                server['name'] = s.net_addr_str()
+                server['address'] = server['name']
+
+                self.servers.append(server)
+