mining: optimize update function, improve performance

main.qml

@@ -394,6 +394,9 @@ ApplicationWindow {
         if (!walletInitialized) {
             currentWallet.history.refresh(currentWallet.currentSubaddressAccount)
             walletInitialized = true
+
+            // check if daemon was already mining and add mining logo if true
+            middlePanel.miningView.update();
         }
      }
 

pages/Mining.qml

@@ -229,7 +229,7 @@ Rectangle {
     }
 
     function updateStatusText() {
-        if (walletManager.isMining()) {
+        if (appWindow.isMining) {
             statusText.text = qsTr("Mining at %1 H/s").arg(walletManager.miningHashRate()) + translationManager.emptyString;
         }
         else {
@@ -238,10 +238,10 @@ Rectangle {
     }
 
     function update() {
+        appWindow.isMining = walletManager.isMining()
         updateStatusText()
-        startSoloMinerButton.enabled = !walletManager.isMining()
+        startSoloMinerButton.enabled = !appWindow.isMining
         stopSoloMinerButton.enabled = !startSoloMinerButton.enabled
-        appWindow.isMining = walletManager.isMining()
     }
 
     MoneroComponents.StandardDialog {

pages/Transfer.qml

@@ -694,8 +694,6 @@ Rectangle {
                 // Light wallet is always ready
                 pageRoot.enabled = true;
                 root.warningContent = "";
-                // check if daemon was already mining and add mining logo if true
-                middlePanel.miningView.update();
             }
         }
     }