budibase/packages/standard-components/src/Nav.svelte

117 lines
2.6 KiB
Svelte

<script>
import cssVars from "./cssVars"
export let navBarBackground = ""
export let navBarBorder = ""
export let navBarColor = ""
export let selectedItemBackground = ""
export let selectedItemColor = ""
export let selectedItemBorder = ""
export let itemHoverBackground = ""
export let itemHoverColor = ""
export let hideNavBar = false
export let selectedItem = ""
export let _children
export let _bb
let selectedIndex = -1
let styleVars = {}
let components = {}
let componentElements = {}
const hasComponentElements = () =>
Object.getOwnPropertyNames(componentElements).length > 0
$: {
styleVars = {
navBarBackground,
navBarBorder,
navBarColor,
selectedItemBackground,
selectedItemColor,
selectedItemBorder,
itemHoverBackground,
itemHoverColor,
}
if (_children && _children.length > 0 && hasComponentElements()) {
const currentSelectedItem =
selectedIndex > 0 ? _children[selectedIndex].title : ""
if (selectedItem && currentSelectedItem !== selectedItem) {
let i = 0
for (let child of _children) {
if (child.title === selectedItem) {
onSelectItem(i)()
}
i++
}
} else if (!currentSelectedItem) {
onSelectItem(0)
}
}
}
const onSelectItem = index => () => {
selectedIndex = index
if (!components[index]) {
const comp = _bb.attachChildren(componentElements[index])
components[index] = comp
}
}
</script>
<div class="root" use:cssVars={styleVars}>
{#if !hideNavBar}
<div class="navbar">
{#each _children as navItem, index}
<div
class="navitem"
on:click={onSelectItem(index)}
class:selected={selectedIndex === index}>
{navItem.title}
</div>
{/each}
</div>
{/if}
{#each _children as navItem, index}
<div class="content" bind:this={componentElements[index]} />
{/each}
</div>
<style>
.root {
height: 100%;
width: 100%;
grid-template-columns: [navbar] auto [content] 1fr;
display: grid;
}
.navbar {
grid-column: navbar;
background: var(--navBarBackground);
border: var(--navBarBorder);
color: var(--navBarColor);
}
.navitem {
padding: 10px 17px;
cursor: pointer;
}
.navitem:hover {
background: var(--itemHoverBackground);
color: var(--itemHoverColor);
}
.navitem.selected {
background: var(--selectedItemBackground);
border: var(--selectedItemBorder);
color: var(--selectedItemColor);
}
.content {
grid-column: content;
}
</style>