Vuetify - List menu activator visibility toggle - mouseover

Question

I have 3 cards when mouse hover on card title it shows a arrow_down icon & i can click on it , it a drop down menu with Delete function when i hover over the v-card-title it shows the icon but after i click on it, mouse on drop-down menu the arrow_down icon disappeared,
how to properly implement it ?
https://codepen.io/sharon-the-encoder/pen/WLWyoG?editors=0010
const cards = [
{
title: "Gooey PBJ Brownies",
author: "John Walibur",
image: "https://placeimg.com/640/480/nature"
},
{
title: "Crisp Spanish Tortilla Matzo Brei",
author: "Colman Andrews",
image: "https://placeimg.com/640/480/animals"
},
{
title: "Grilled Shrimp with Lemon and Garlic",
author: "Celeste Mills",
image: "https://placeimg.com/640/480/arch"
}
];
new Vue({
el: "#app",
data: {
cards: cards,
selectedCard: -1
},
methods: {
hoverCard(selectedIndex) {
this.selectedCard = selectedIndex
},
isSelected(cardIndex) {
return this.selectedCard === cardIndex
},
passmsgid(index) {
alert(index)
}
}
});
body {
background-color: #e1e7e7;
}
.grey--text.selected {
color: red !important;
}
.iconkey {
display: none;
}
.iconkey.selected {
display: block;
color: blue !important;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.18/vue.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vuetify/1.4.2/vuetify.min.js">
</script>
<link rel='stylesheet' href='https://cdn.jsdelivr.net/npm/vuetify/dist/vuetify.min.css'>
<link rel='stylesheet' href='https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900|Material+Icons'>
<div id="app">
<v-app>
<v-content>
<v-container>Hello world</v-container>
<v-container fluid>
<v-layout row wrap>
<v-flex xs12 sm4 md4 lg4 v-for="(card, index) in cards" :key="index">
<v-card class="ml-3 mt-3">
<v-img :src="card.image" height="200px">
</v-img>
<v-card-title primary-title #mouseover="hoverCard(index)" #mouseout="hoverCard(-1)">
<div>
<div class="headline">{{card.title}}</div>
<span class="grey--text" :class="{'selected': isSelected(index)}">{{card.author}} -
</span>
<v-expand-transition>
<v-menu bottom transition="scale-transition" nudge-bottom="40">
<v-btn icon slot="activator" styole="margin-bottom: -1em;">
<v-icon class="iconkey" :class="{'selected': isSelected(index)}">keyboard_arrow_down</v-icon>
</v-btn>
<v-list>
<v-list-tile>
<v-list-tile-title #click="passmsgid(index)">Delete</v-list-tile-title>
</v-list-tile>
</v-list>
</v-menu>
</v-expand-transition>
</div>
</v-card-title>
<v-card-actions>
<v-btn flat>Share</v-btn>
<v-btn flat color="purple">Explore</v-btn>
<v-spacer></v-spacer>
</v-card-actions>
</v-card>
</v-flex>
</v-layout>
</v-container>
</v-content>
</v-app>
</div>

Answer 1

Updated pen using more CSS, and without v-hover: Codepen
(Originally I used v-hover but for this case not needed)
Codepen
We will control visibility by using the following CSS class:
.hidden {
visibility: hidden;
}
menu-button is hidden unless:
a) we are hovering over its parent-tile or
b) when the corresponding menu is opened.
So we need to set up custom item (tile) component:
Set menu visibility control:
data: () => ({
menu: false, // control button-menu state (opened / closed)
})
And our template starts with v-hover component so we can detect when we hover over it and react to that event:
<template>
<v-hover>
<v-list-tile slot-scope="{ hover }" #click="">
// ...
<v-menu v-model="menu" offset-y left >
<v-btn slot="activator"
:class="{hidden: !hover && !menu}"
>
:class="{hidden: !hover && !menu}" - we set hidden class on button when we are not hovering over the parent-tile and when corresponding menu is closed.