add QEAddressListModel and initial Addresses.qml page.

show sane main view when no wallet loaded.
show error dialog when wallet could not be loaded.
show wallet up_to_date indicator in title bar.
refactor QETransactionListModel to be more self-contained.

electrum/gui/qml/components/Addresses.qml

@@ -0,0 +1,88 @@
+import QtQuick 2.6
+import QtQuick.Layouts 1.0
+import QtQuick.Controls 2.0
+import QtQuick.Controls.Material 2.0
+
+import org.electrum 1.0
+
+Pane {
+    id: rootItem
+    anchors.fill: parent
+
+    property string title: Daemon.walletName + ' - ' + qsTr('Addresses')
+
+    ColumnLayout {
+        id: layout
+        width: parent.width
+        height: parent.height
+
+        Item {
+            width: parent.width
+            Layout.fillHeight: true
+
+            ListView {
+                id: listview
+                width: parent.width
+                height: parent.height
+                clip: true
+                model: Daemon.currentWallet.addressModel
+
+                delegate: AbstractButton {
+                    id: delegate
+                    width: ListView.view.width
+                    height: 30
+
+                    background: Rectangle {
+                        color: model.held ? Qt.rgba(1,0,0,0.5) :
+                            model.numtx > 0 && model.balance == 0 ? Qt.rgba(1,1,1,0.25) :
+                            model.type == 'receive' ? Qt.rgba(0,1,0,0.25) :
+                            Qt.rgba(1,0.93,0,0.25)
+                        Rectangle {
+                            height: 1
+                            width: parent.width
+                            anchors.top: parent.top
+                            border.color: Material.accentColor
+                            visible: model.index > 0
+                        }
+                    }
+                    RowLayout {
+                        x: 10
+                        spacing: 5
+                        width: parent.width - 20
+                        anchors.verticalCenter: parent.verticalCenter
+
+                        Label {
+                            font.pixelSize: 12
+                            text: model.type
+                        }
+                        Label {
+                            font.pixelSize: 12
+                            font.family: "Courier" // TODO: use system monospace font
+                            text: model.address
+                            elide: Text.ElideMiddle
+                            Layout.maximumWidth: delegate.width / 4
+                        }
+                        Label {
+                            font.pixelSize: 12
+                            text: model.label
+                            elide: Text.ElideRight
+                            Layout.minimumWidth: delegate.width / 4
+                            Layout.fillWidth: true
+                        }
+                        Label {
+                            font.pixelSize: 12
+                            text: model.balance
+                        }
+                        Label {
+                            font.pixelSize: 12
+                            text: model.numtx
+                        }
+                    }
+                }
+            }
+
+        }
+    }
+
+    Component.onCompleted: Daemon.currentWallet.addressModel.init_model()
+}

electrum/gui/qml/components/WalletMainView.qml

@@ -9,12 +9,35 @@ Item {
     property string title: Daemon.walletName
 
     property QtObject menu: Menu {
-        MenuItem { text: 'Wallets'; onTriggered: stack.push(Qt.resolvedUrl('Wallets.qml')) }
-        MenuItem { text: 'Network'; onTriggered: stack.push(Qt.resolvedUrl('NetworkStats.qml')) }
+        MenuItem { text: qsTr('Addresses'); onTriggered: stack.push(Qt.resolvedUrl('Addresses.qml')); visible: Daemon.currentWallet != null }
+        MenuItem { text: qsTr('Wallets'); onTriggered: stack.push(Qt.resolvedUrl('Wallets.qml')) }
+        MenuItem { text: qsTr('Network'); onTriggered: stack.push(Qt.resolvedUrl('NetworkStats.qml')) }
+    }
+
+    ColumnLayout {
+        anchors.centerIn: parent
+        width: parent.width
+        spacing: 40
+        visible: Daemon.currentWallet == null
+
+        Label {
+            text: qsTr('No wallet loaded')
+            font.pixelSize: 24
+            Layout.alignment: Qt.AlignHCenter
+        }
+
+        Button {
+            text: qsTr('Open/Create Wallet')
+            Layout.alignment: Qt.AlignHCenter
+            onClicked: {
+                stack.push(Qt.resolvedUrl('Wallets.qml'))
+            }
+        }
     }
 
     ColumnLayout {
         anchors.fill: parent
+        visible: Daemon.currentWallet != null
 
         TabBar {
             id: tabbar

electrum/gui/qml/components/main.qml

@@ -31,6 +31,7 @@ ApplicationWindow
                 onClicked: stack.pop()
             }
             Item {
+                visible: Network.isTestNet
                 width: column.width
                 height: column.height
                 MouseArea {
@@ -46,7 +47,6 @@ ApplicationWindow
 
                 Column {
                     id: column
-                    visible: Network.isTestNet
                     Image {
                         anchors.horizontalCenter: parent.horizontalCenter
                         width: 16
@@ -63,15 +63,22 @@ ApplicationWindow
                 }
             }
 
+            Image {
+                Layout.preferredWidth: 16
+                Layout.preferredHeight: 16
+                source: Daemon.currentWallet.isUptodate ? "../../icons/status_connected.png" : "../../icons/status_lagging.png"
+            }
+
             Label {
                 text: stack.currentItem.title
                 elide: Label.ElideRight
                 horizontalAlignment: Qt.AlignHCenter
                 verticalAlignment: Qt.AlignVCenter
                 Layout.fillWidth: true
-                font.pointSize: 10
+                font.pixelSize: 14
                 font.bold: true
             }
+
             ToolButton {
                 text: qsTr("⋮")
                 onClicked: {
@@ -203,5 +210,10 @@ ApplicationWindow
 //             var dialog = _openWallet.createObject(app)
             //dialog.open()
         }
+        function onWalletOpenError(error) {
+            console.log('wallet open error')
+            var dialog = app.messageDialog.createObject(app, {'text': error})
+            dialog.open()
+        }
     }
 }

electrum/gui/qml/qedaemon.py

@@ -3,7 +3,7 @@ import os
 from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, QObject, QUrl
 from PyQt5.QtCore import Qt, QAbstractListModel, QModelIndex
 
-from electrum.util import register_callback, get_new_wallet_name
+from electrum.util import register_callback, get_new_wallet_name, WalletFileException
 from electrum.logging import get_logger
 from electrum.wallet import Wallet, Abstract_Wallet
 from electrum.storage import WalletStorage, StorageReadWriteError
@@ -90,7 +90,7 @@ class QEDaemon(QObject):
     walletRequiresPassword = pyqtSignal()
     activeWalletsChanged = pyqtSignal()
     availableWalletsChanged = pyqtSignal()
-    couldNotOpenFile = pyqtSignal()
+    walletOpenError = pyqtSignal([str], arguments=["error"])
 
     @pyqtSlot()
     @pyqtSlot(str)
@@ -107,21 +107,25 @@ class QEDaemon(QObject):
         try:
             storage = WalletStorage(self._path)
             if not storage.file_exists():
-                self.couldNotOpenFile.emit()
+                self.walletOpenError.emit(qsTr('File not found'))
                 return
         except StorageReadWriteError as e:
-            self.couldNotOpenFile.emit()
+            self.walletOpenError.emit('Storage read/write error')
             return
 
-        wallet = self.daemon.load_wallet(self._path, password)
-        if wallet != None:
-            self._loaded_wallets.add_wallet(wallet=wallet)
-            self._current_wallet = QEWallet(wallet)
-            self.walletLoaded.emit()
-            self.daemon.config.save_last_wallet(wallet)
-        else:
-            self._logger.info('password required but unset or incorrect')
-            self.walletRequiresPassword.emit()
+        try:
+            wallet = self.daemon.load_wallet(self._path, password)
+            if wallet != None:
+                self._loaded_wallets.add_wallet(wallet=wallet)
+                self._current_wallet = QEWallet(wallet)
+                self.walletLoaded.emit()
+                self.daemon.config.save_last_wallet(wallet)
+            else:
+                self._logger.info('password required but unset or incorrect')
+                self.walletRequiresPassword.emit()
+        except WalletFileException as e:
+            self._logger.error(str(e))
+            self.walletOpenError.emit(str(e))
 
     @pyqtProperty('QString')
     def path(self):

electrum/gui/qml/qewallet.py

@@ -8,9 +8,10 @@ from electrum import bitcoin
 from electrum.transaction import Transaction, tx_from_any, PartialTransaction, PartialTxOutput
 from electrum.invoices import PR_PAID, PR_UNPAID, PR_UNKNOWN, PR_EXPIRED, PR_UNCONFIRMED, PR_TYPE_ONCHAIN, PR_TYPE_LN
 
-class QETransactionsListModel(QAbstractListModel):
-    def __init__(self, parent=None):
+class QETransactionListModel(QAbstractListModel):
+    def __init__(self, wallet, parent=None):
         super().__init__(parent)
+        self.wallet = wallet
         self.tx_history = []
 
     _logger = get_logger(__name__)
@@ -43,20 +44,95 @@ class QETransactionsListModel(QAbstractListModel):
         self.endResetModel()
 
     # initial model data
-    def set_history(self, history):
+    def init_model(self):
+        history = self.wallet.get_detailed_history(show_addresses = True)
+        txs = history['transactions']
+        # use primitives
+        for tx in txs:
+            for output in tx['outputs']:
+                output['value'] = output['value'].value
+
         self.clear()
-        self.beginInsertRows(QModelIndex(), 0, len(history) - 1)
-        self.tx_history = history
+        self.beginInsertRows(QModelIndex(), 0, len(txs) - 1)
+        self.tx_history = txs
         self.tx_history.reverse()
         self.endInsertRows()
 
+class QEAddressListModel(QAbstractListModel):
+    def __init__(self, wallet, parent=None):
+        super().__init__(parent)
+        self.wallet = wallet
+        self.receive_addresses = []
+        self.change_addresses = []
+
+
+    _logger = get_logger(__name__)
+
+    # define listmodel rolemap
+    _ROLE_NAMES=('type','address','label','balance','numtx', 'held')
+    _ROLE_KEYS = range(Qt.UserRole + 1, Qt.UserRole + 1 + len(_ROLE_NAMES))
+    _ROLE_MAP  = dict(zip(_ROLE_KEYS, [bytearray(x.encode()) for x in _ROLE_NAMES]))
+
+    def rowCount(self, index):
+        return len(self.receive_addresses) + len(self.change_addresses)
+
+    def roleNames(self):
+        return self._ROLE_MAP
+
+    def data(self, index, role):
+        if index.row() > len(self.receive_addresses) - 1:
+            address = self.change_addresses[index.row() - len(self.receive_addresses)]
+        else:
+            address = self.receive_addresses[index.row()]
+        role_index = role - (Qt.UserRole + 1)
+        value = address[self._ROLE_NAMES[role_index]]
+        if isinstance(value, bool) or isinstance(value, list) or isinstance(value, int) or value is None:
+            return value
+        if isinstance(value, Satoshis):
+            return value.value
+        return str(value)
+
+    def clear(self):
+        self.beginResetModel()
+        self.receive_addresses = []
+        self.change_addresses = []
+        self.endResetModel()
+
+    # initial model data
+    @pyqtSlot()
+    def init_model(self):
+        r_addresses = self.wallet.get_receiving_addresses()
+        c_addresses = self.wallet.get_change_addresses()
+        n_addresses = len(r_addresses) + len(c_addresses)
+
+        def insert_row(atype, alist, address):
+            item = {}
+            item['type'] = atype
+            item['address'] = address
+            item['numtx'] = self.wallet.get_address_history_len(address)
+            item['label'] = self.wallet.get_label(address)
+            c, u, x = self.wallet.get_addr_balance(address)
+            item['balance'] = c + u + x
+            item['held'] = self.wallet.is_frozen_address(address)
+            alist.append(item)
+
+        self.clear()
+        self.beginInsertRows(QModelIndex(), 0, n_addresses - 1)
+        for address in r_addresses:
+            insert_row('receive', self.receive_addresses, address)
+        for address in c_addresses:
+            insert_row('change', self.change_addresses, address)
+        self.endInsertRows()
+
 class QEWallet(QObject):
     def __init__(self, wallet, parent=None):
         super().__init__(parent)
         self.wallet = wallet
-        self._historyModel = QETransactionsListModel()
-        self.get_history()
+        self._historyModel = QETransactionListModel(wallet)
+        self._addressModel = QEAddressListModel(wallet)
+        self._historyModel.init_model()
         register_callback(self.on_request_status, ['request_status'])
+        register_callback(self.on_status, ['status'])
 
     _logger = get_logger(__name__)
 
@@ -65,15 +141,18 @@ class QEWallet(QObject):
     requestStatus = pyqtSignal()
     def on_request_status(self, event, *args):
         self._logger.debug(str(event))
-#        (wallet, addr, status) = args
-#        self._historyModel.add_tx()
         self.requestStatus.emit()
 
     historyModelChanged = pyqtSignal()
-    @pyqtProperty(QETransactionsListModel, notify=historyModelChanged)
+    @pyqtProperty(QETransactionListModel, notify=historyModelChanged)
     def historyModel(self):
         return self._historyModel
 
+    addressModelChanged = pyqtSignal()
+    @pyqtProperty(QEAddressListModel, notify=addressModelChanged)
+    def addressModel(self):
+        return self._addressModel
+
     @pyqtProperty('QString', notify=dataChanged)
     def txinType(self):
         return self.wallet.get_txin_type(self.wallet.dummy_address())
@@ -115,22 +194,16 @@ class QEWallet(QObject):
 
         return c+x
 
+    def on_status(self, status):
+        self._logger.info('wallet: status update: ' + str(status))
+        self.isUptodateChanged.emit()
+
     # lightning feature?
     isUptodateChanged = pyqtSignal()
     @pyqtProperty(bool, notify=isUptodateChanged)
     def isUptodate(self):
         return self.wallet.is_up_to_date()
 
-    def get_history(self):
-        history = self.wallet.get_detailed_history(show_addresses = True)
-        txs = history['transactions']
-        # use primitives
-        for tx in txs:
-            for output in tx['outputs']:
-                output['value'] = output['value'].value
-        self._historyModel.set_history(txs)
-        self.historyModelChanged.emit()
-
     @pyqtSlot('QString', int, int, bool)
     def send_onchain(self, address, amount, fee=None, rbf=False):
         self._logger.info('send_onchain: ' + address + ' ' + str(amount))