qml: remove coupling from contentModel to SearchBox

modules/gui/qt/maininterface/qml/BannerSources.qml

@@ -60,12 +60,19 @@ FocusScope {
             searchBox.expanded = true
     }
 
+    Binding {
+        target: contentModel
+        property: "searchPattern"
+        value: searchBox.searchPattern
+        when: !!contentModel
+    }
+
     Widgets.AcrylicBackground {
         alternativeColor: VLCStyle.colors.topBanner
         anchors.fill: parent
     }
 
-     Item {
+    Item {
         id: pLBannerSources
 
         property alias model: globalMenuGroup.model
@@ -377,7 +384,6 @@ FocusScope {
 
                             Widgets.SearchBox {
                                 id: searchBox
-                                contentModel: root.contentModel
                                 visible: root.contentModel !== undefined
                                 enabled: visible
                                 height: VLCStyle.bannerButton_height

modules/gui/qt/widgets/qml/SearchBox.qml

@@ -29,11 +29,12 @@ FocusScope {
 
     width: content.width
 
-    property variant contentModel
     property alias buttonWidth: icon.width
 
     property bool expanded: false
 
+    property alias searchPattern: searchBox.text
+
     onExpandedChanged: {
         if (expanded) {
             searchBox.forceActiveFocus()
@@ -140,11 +141,6 @@ FocusScope {
 
                 background: Rectangle { color: "transparent" }
 
-                onTextChanged: {
-                    if (contentModel !== undefined)
-                        contentModel.searchPattern = text;
-                }
-
                 Navigation.parentItem: root
                 Navigation.leftItem: icon
                 Navigation.rightItem: clearButton.visible ? clearButton : null