Implement HLabeledItem loading mode

src/gui/Base/HLabeledItem.qml

@@ -9,6 +9,8 @@ HColumnLayout {
 
     default property alias insideData: itemHolder.data
 
+    property bool loading: false
+
     readonly property Item item: itemHolder.children[0]
     readonly property alias label: label
     readonly property alias errorLabel: errorLabel
@@ -16,7 +18,7 @@ HColumnLayout {
 
 
     HRowLayout {
-        spacing: parent.spacing
+        spacing: theme.spacing
 
         HLabel {
             id: label
@@ -51,6 +53,17 @@ HColumnLayout {
             id: toolTip
             visible: toolTip.text && hoverHandler.hovered
         }
+
+        HLoader {
+            source: "HBusyIndicator.qml"
+            active: loading
+            visible: height > 0
+
+            Layout.preferredWidth: height
+            Layout.preferredHeight: active ? label.height : 0
+
+            Behavior on Layout.preferredHeight { HNumberAnimation {} }
+        }
     }
 
     Item {

src/gui/Base/HTextArea.qml

@@ -25,6 +25,8 @@ TextArea {
     property color errorBorder: theme.controls.textArea.errorBorder
     property color focusedBorderColor: theme.controls.textArea.focusedBorder
 
+    property string previousDefaultText: ""  // private
+
 
     function reset() { clear(); text = Qt.binding(() => defaultText) }
     function insertAtCursor(text) { insert(cursorPosition, text) }
@@ -62,17 +64,28 @@ TextArea {
         }
     }
 
+    Component.onCompleted: {
+        // Break binding
+        previousDefaultText = previousDefaultText
+
         // Set it only on component creation to avoid binding loops
-    Component.onCompleted: if (! text) {
+        if (! text) {
             text           = window.getState(this, "text", "")
-        textArea.cursorPosition = text.length
+            cursorPosition = text.length
+        }
     }
 
-    onActiveFocusChanged:
-        text = activeFocus || changed ? text : Qt.binding(() => defaultText)
-
     onTextChanged: window.saveState(this)
 
+    onActiveFocusChanged: text = text  // Break binding
+
+    onDefaultTextChanged: {
+        if (text === previousDefaultText)
+            text = Qt.binding(() => defaultText)
+
+        previousDefaultText = defaultText
+    }
+
     // Prevent alt/super+any key from typing text
     Keys.onPressed: if (
         event.modifiers & Qt.AltModifier ||

src/gui/Base/HTextField.qml

@@ -37,16 +37,27 @@ TextField {
         }
     }
 
+    Component.onCompleted: {
+        // Break binding
+        previousDefaultText = previousDefaultText
+
         // Set it only on component creation to avoid binding loops
-    Component.onCompleted: if (! text) {
+        if (! text) {
             text           = window.getState(this, "text", "")
             cursorPosition = text.length
         }
+    }
 
     onTextChanged: window.saveState(this)
 
-    onActiveFocusChanged:
+    onActiveFocusChanged: text = text  // Break binding
-        text = activeFocus || changed ? text : Qt.binding(() => defaultText)
+
+    onDefaultTextChanged: {
+        if (text === previousDefaultText)
+            text = Qt.binding(() => defaultText)
+
+        previousDefaultText = defaultText
+    }
 
     // Prevent alt/super+any key from typing text
     Keys.onPressed: if (
@@ -81,6 +92,8 @@ TextField {
     property string defaultText: ""
     readonly property bool changed: text !== defaultText
 
+    property string previousDefaultText: ""  // private
+
 
     function reset() { clear(); text = Qt.binding(() => defaultText)}