Don't allow view's loading indicator and placeholder message to overlap

BUG: 424918
FIXED-IN: 20.12

src/qml/DataGridView.qml

@@ -91,6 +91,8 @@ FocusScope {
 
         onOpen: viewManager.openChildView(fullData)
 
+        suppressNoDataPlaceholderMessage: busyIndicatorLoader.active
+
         onGoBackRequested: {
             viewManager.goBack()
         }

src/qml/DataListView.qml

@@ -221,7 +221,10 @@ FocusScope {
 
         onGoBackRequested: viewManager.goBack()
 
+        suppressNoDataPlaceholderMessage: busyIndicatorLoader.active
+
         Loader {
+            id: busyIndicatorLoader
             anchors.centerIn: parent
             height: Kirigami.Units.gridUnit * 5
             width: height

src/qml/GridBrowserView.qml

@@ -34,6 +34,7 @@ FocusScope {
     property url defaultIcon
     property int depth: 1
     property alias viewManager: navigationBar.viewManager
+    property bool suppressNoDataPlaceholderMessage: false
 
     signal enqueue(var fullData, string name)
     signal replaceAndPlay(var fullData, string name)
@@ -208,7 +209,7 @@ FocusScope {
                 Kirigami.PlaceholderMessage {
                     anchors.centerIn: parent
                     width: parent.width - (Kirigami.Units.largeSpacing * 4)
-                    visible: contentDirectoryView.count === 0
+                    visible: contentDirectoryView.count === 0 && !suppressNoDataPlaceholderMessage
                     text: i18n("Nothing to display")
                 }
 

src/qml/ListBrowserView.qml

@@ -42,6 +42,7 @@ FocusScope {
     property alias navigationBar: navigationBar
     property int depth: 1
     property alias viewManager: navigationBar.viewManager
+    property bool suppressNoDataPlaceholderMessage: false
 
     signal goBackRequested()
     signal showArtist(var name)
@@ -181,7 +182,7 @@ FocusScope {
                 Kirigami.PlaceholderMessage {
                     anchors.centerIn: parent
                     width: parent.width - (Kirigami.Units.largeSpacing * 4)
-                    visible: contentDirectoryView.count === 0
+                    visible: contentDirectoryView.count === 0 && !suppressNoDataPlaceholderMessage
                     text: i18n("Nothing to display")
                 }