qml: implement bip39 account detection

electrum/gui/qml/components/wizard/WCBIP39Refine.qml

@@ -1,9 +1,11 @@
 import QtQuick 2.6
 import QtQuick.Layouts 1.0
 import QtQuick.Controls 2.1
+import QtQuick.Controls.Material 2.0
 
 import org.electrum 1.0
 
+import ".."
 import "../controls"
 
 WizardComponent {
@@ -86,10 +88,33 @@ WizardComponent {
             Label {
                 text: qsTr('Script type and Derivation path')
             }
-            Button {
-                text: qsTr('Detect Existing Accounts')
-                enabled: false
+            Pane {
+                Layout.alignment: Qt.AlignHCenter
+                padding: 0
                 visible: !isMultisig
+
+                FlatButton {
+                    text: qsTr('Detect Existing Accounts')
+                    onClicked: {
+                        var dialog = bip39recoveryDialog.createObject(mainLayout, {
+                            walletType: wizard_data['wallet_type'],
+                            seed: wizard_data['seed'],
+                            seedExtraWords: wizard_data['seed_extra_words']
+                        })
+                        dialog.accepted.connect(function () {
+                            // select matching script type button and set derivation path
+                            for (var i = 0; i < scripttypegroup.buttons.length; i++) {
+                                var btn = scripttypegroup.buttons[i]
+                                if (btn.visible && btn.scripttype == dialog.scriptType) {
+                                    btn.checked = true
+                                    derivationpathtext.text = dialog.derivationPath
+                                    return
+                                }
+                            }
+                        })
+                        dialog.open()
+                    }
+                }
             }
 
             Label {
@@ -157,6 +182,11 @@ WizardComponent {
         id: bitcoin
     }
 
+    Component {
+        id: bip39recoveryDialog
+        BIP39RecoveryDialog { }
+    }
+
     Component.onCompleted: {
         isMultisig = wizard_data['wallet_type'] == 'multisig'
         if (isMultisig) {