qml: Add validator & specify errorText & loading to ValueInput settings

Adds an IntValidator to integer input ValueInput settings. Additionally,
specifies the "errorText" for these settings as well as the condition
for when to load the errorText

Author: jarolrod

src/qml/components/DeveloperOptions.qml

@@ -27,9 +27,12 @@ ColumnLayout {
         id: dbcacheSetting
         Layout.fillWidth: true
         header: qsTr("Database cache size (MiB)")
+        errorText: qsTr("This is not a valid cache size.")
+        showErrorText: !loadedItem.acceptableInput && loadedItem.length > 0
         actionItem: ValueInput {
             parentState: dbcacheSetting.state
             description: optionsModel.dbcacheSizeMiB
+            validator: IntValidator{bottom: 100;}
             onEditingFinished: {
                 optionsModel.dbcacheSizeMiB = parseInt(text)
                 dbcacheSetting.forceActiveFocus()
@@ -45,9 +48,12 @@ ColumnLayout {
         id: parSetting
         Layout.fillWidth: true
         header: qsTr("Script verification threads")
+        errorText: qsTr("This is not a valid thread count.")
+        showErrorText: !loadedItem.acceptableInput && loadedItem.length > 0
         actionItem: ValueInput {
             parentState: parSetting.state
             description: optionsModel.scriptThreads
+            validator: IntValidator{bottom: -10; top: 10;}
             onEditingFinished: {
                 optionsModel.scriptThreads = parseInt(text)
                 parSetting.forceActiveFocus()

src/qml/components/StorageSettings.qml

@@ -33,9 +33,12 @@ ColumnLayout {
         id: pruneTargetSetting
         Layout.fillWidth: true
         header: qsTr("Storage limit (GB)")
+        errorText: qsTr("This is not a valid prune target.")
+        showErrorText: !loadedItem.acceptableInput && loadedItem.length > 0
         actionItem: ValueInput {
             parentState: pruneTargetSetting.state
             description: optionsModel.pruneSizeGB
+            validator: IntValidator{bottom: 2;}
             onEditingFinished: {
                 optionsModel.pruneSizeGB = parseInt(text)
                 pruneTargetSetting.forceActiveFocus()