fix(FilePicker): Stop default close event in case of button press

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

[skip ci]

lib/components/FilePicker/FilePicker.vue

@@ -117,6 +117,8 @@ const emit = defineEmits<{
 	(e: 'close', v?: Node[]): void
 }>()
 
+const isOpen = ref(true)
+
 /**
  * Whether we are on a public endpoint (e.g. public share)
  */
@@ -153,6 +155,20 @@ const dialogButtons = computed(() => {
 	} as IFilePickerButton))
 })
 
+/**
+ * Flag that is set when a button was clicked to prevent the default close event to be emitted
+ * This is needed as `handleButtonClick` is async and thus might execute after NcDialog already closed
+ */
+let isHandlingCallback = false
+
+const handleButtonClick = async (callback: IFilePickerButton['callback']) => {
+	const nodes = selectedFiles.value.length === 0 && props.allowPickDirectory ? [await getFile(currentPath.value)] : selectedFiles.value as Node[]
+	callback(nodes)
+	emit('close', nodes)
+	// Unlock close
+	isHandlingCallback = false
+}
+
 /**
  * Name of the currently active view
  */