Add blockchain folder FileDialog

main.qml

@@ -1022,6 +1022,58 @@ ApplicationWindow {
 
     }
 
+    // Choose blockchain folder
+    FileDialog {
+        id: blockchainFileDialog
+        title: "Please choose a folder"
+        selectFolder: true
+        folder: "file://" + persistentSettings.blockchainDataDir
+
+        onAccepted: {
+            var dataDir = walletManager.urlToLocalPath(blockchainFileDialog.fileUrl)
+            var validator = daemonManager.validateDataDir(dataDir);
+            if(!validator.valid) {
+
+                confirmationDialog.title = qsTr("Warning") + translationManager.emptyString;
+                confirmationDialog.text = "";
+                if(validator.readOnly)
+                    confirmationDialog.text  += qsTr("Error: Filesystem is read only") + "\n\n"
+                if(validator.storageAvailable < 20)
+                    confirmationDialog.text  += qsTr("Warning: There's only %1 GB available on the device. Blockchain requires ~%30 GB of data.").arg(validator.storageAvailable).arg(15) + "\n\n"
+                else
+                    confirmationDialog.text  += qsTr("Note: There's %1 GB available on the device. Blockchain requires ~%30 GB of data.").arg(validator.storageAvailable).arg(15) + "\n\n"
+                if(!validator.lmdbExists)
+                    confirmationDialog.text  += qsTr("Note: lmdb folder not found. A new folder will be created.") + "\n\n"
+
+
+                confirmationDialog.icon = StandardIcon.Question
+                confirmationDialog.cancelText = qsTr("Cancel")
+
+                // Continue
+                confirmationDialog.onAcceptedCallback = function() {
+                    persistentSettings.blockchainDataDir = dataDir
+                }
+
+                // Cancel
+                confirmationDialog.onRejectedCallback = function() {
+                };
+
+                confirmationDialog.open()
+            } else {
+                persistentSettings.blockchainDataDir = dataDir
+            }
+
+            delete validator;
+
+
+        }
+        onRejected: {
+            console.log("data dir selection canceled")
+        }
+
+    }
+
+
     PasswordDialog {
         id: passwordDialog