fix(StatusAssetSelector): Fixed error of crypto balance not updated correctly

Also added error handling in case in case that crypto symbol image is not available
Added a way to display the balance in currently selected currency on the widget
To do this the consumer of this widget needs to implement "getCurrencyBalanceString" based on the currently selected currency

fixes #4079

ui/StatusQ/sandbox/StatusAssetSelectorPage.qml

@@ -13,22 +13,26 @@ Column {
     spacing: 8
 
     StatusAssetSelector {
+        getCurrencyBalanceString: function (currencyBalance) {
+            return currencyBalance.toFixed(2) + " USD"
+        }
+        tokenAssetSourceFn: function (symbol) {
+            return "../../assets/img/icons/snt.svg"
+        }
         assets: ListModel {
             ListElement {
                 address: "0x1234"
                 name: "Status Network Token"
-                value: "20"
+                balance: "20"
                 symbol: "SNT"
-                fiatBalance: "9992.01"
-                fiatBalanceDisplay: "9992.01"
+                currencyBalance: 9992.01
             }
             ListElement {
                 address: "0x1234"
                 name: "DAI Token"
-                value: "20"
+                balance: "15"
                 symbol: "DAI"
-                fiatBalance: "20"
-                fiatBalanceDisplay: "20"
+                currencyBalance: 20.00001
             }
         }
     }

ui/StatusQ/src/StatusQ/Controls/StatusAssetSelector.qml

@@ -12,17 +12,12 @@ Item {
     id: root
     property var assets
     property var selectedAsset
+    property string defaultToken: ""
     property var tokenAssetSourceFn: function (symbol) {
         return ""
     }
-    property var assetGetterFn: function (index, field) {
-        // This is merely to make the component work with nim model data
-        // as well as static QML ListModel data
-        if (typeof assets.get === "function") {
-            return assets.get(index)[field]
-        }
-        return assets.rowData(index, field)
-    }
+    // Define this in the usage to get balance in currency selected by user
+    property var getCurrencyBalanceString: function (currencyBalance) { return "" }
     implicitWidth: 86
     implicitHeight: 32
 
@@ -38,20 +33,6 @@ Item {
         }
     }
 
-    onAssetsChanged: {
-        if (!assets) {
-            return
-        }
-        selectedAsset = {
-            name: assetGetterFn(0, "name"),
-            symbol: assetGetterFn(0, "symbol"),
-            value: assetGetterFn(0, "value"),
-            fiatBalanceDisplay: assetGetterFn(0, "fiatBalanceDisplay"),
-            address: assetGetterFn(0, "address"),
-            fiatBalance: assetGetterFn(0, "fiatBalance")
-        }
-    }
-
     StatusSelect {
         id: select
         width: parent.width
@@ -71,6 +52,11 @@ Item {
                 width: 24
                 height: 24
                 anchors.verticalCenter: parent.verticalCenter
+                image.onStatusChanged: {
+                    if (iconImg.image.status === Image.Error) {
+                        iconImg.image.source = defaultToken
+                    }
+                }
             }
             StatusBaseText {
                 id: selectedTextField
@@ -101,6 +87,11 @@ Item {
                 anchors.leftMargin: 16
                 anchors.verticalCenter: parent.verticalCenter
                 image.source: root.tokenAssetSourceFn(symbol.toUpperCase())
+                image.onStatusChanged: {
+                    if (iconImg.image.status === Image.Error) {
+                        iconImg.image.source = defaultToken
+                    }
+                }
             }
             Column {
                 anchors.left: iconImg.right
@@ -125,23 +116,28 @@ Item {
                 anchors.verticalCenter: parent.verticalCenter
                 StatusBaseText {
                     font.pixelSize: 15
-                    text: parseFloat(value).toFixed(4) + " " + symbol
+                    text: parseFloat(balance).toFixed(4) + " " + symbol
                 }
                 StatusBaseText {
                     font.pixelSize: 15
                     anchors.right: parent.right
-                    text: fiatBalanceDisplay.toUpperCase()
+                    text: getCurrencyBalanceString(currencyBalance)
                     color: Theme.palette.baseColor1
                 }
             }
             background: Rectangle {
                 color: itemContainer.highlighted ? Theme.palette.statusSelect.menuItemHoverBackgroundColor : Theme.palette.statusSelect.menuItemBackgroundColor
             }
+            Component.onCompleted: {
+                if(index === 0 ) {
+                    selectedAsset = { name: name, symbol: symbol, address: address, balance: balance, currencyBalance: currencyBalance}
+                }
+            }
             MouseArea {
                 cursorShape: Qt.PointingHandCursor
                 anchors.fill: itemContainer
                 onClicked: {
-                    root.selectedAsset = { address, name, value, symbol, fiatBalance, fiatBalanceDisplay }
+                    selectedAsset = {name: name, symbol: symbol, address: address, balance: balance, currencyBalance: currencyBalance}
                     select.selectMenu.close()
                 }
             }