# Layout

## Overview

Nectar is a Single Page Application (SPA). Therefore, the entry point to every browser request is `index.html`

In an SPA, only a single web page is loaded, called the app shell, and the consecutive pages are loaded inside this app shell using XMLHttpRequest and Fetch, without loading whole new pages from the server.

In Nectar, this app shell layout is defined inside `/partials/app.html`

## Types of Layouts

Nectar provides two main types of navigation layouts which are widely used in apps — Single View Layout and Tab View Layout.

In Single View Layout, the app is mainly navigated using a off-canvas sidebar. Optionally, a bottom tabbar at `/home/` can also be present for secondary navigation.

In Tab View Layout, the app is mainly navigated using a bottom tabbar. Optionally, a sidebar can also be present for secondary navigation.

The Single View Layout is based on [Framework7's Single View](https://framework7.io/docs/view#view-layout), while the Tab View Layout is based on [Framework7's Multiple Views](https://framework7.io/docs/view#multiple-views-layout).

{% hint style="info" %}
The major difference between Single View Layout and Tab View Layout is that,

In Single View Layout, you can access any inner route directly from the browser address bar, for example, <https://nectar.website/demo/about> and this will open the About screen.

But if you access this in Tab View Layout, then this will always open the first route (/) instead.
{% endhint %}

You can configure and set up your app layout using the configuration variables present inside `/assets/custom/js/config.js`

{% hint style="info" %}
By default, the app is set to Single View Layout for PWAs and Tab View Layout for Cordova.
{% endhint %}

## Single View Layout

### Set Single View Layout as Default

1. Open `/assets/custom/js/config.js`
2. Inside `window.config.layout = {`
3. Set `default: 'singleView'`
4. Inside `singleView` object, you can enable or disable the `sidebar` and `tabbar`, by setting the `enabled` value to `true` or `false` respectively.

### Set up Sidebar Menu for Single View Layout

The layout for Sidebar Menu is defined inside `/partials/sidebar.html`

You can change the sidebar menu items as per your requirements.

{% hint style="info" %}
This Sidebar Menu is common for both Single View Layout and Tab View Layout.
{% endhint %}

### Set up Tabbar Menu for Single View Layout

The layout for Tabbar Menu is defined inside `/partials/tabbar.html`

You can change the tabbar menu items as per your requirements.

### Set up Tabbar Routes for Single View Layout

Once you have changed the tabbar menu items, you will also need to change routes for them.

1. Open `/assets/custom/js/routes.js`
2. Inside `if (window.config.layout.default == 'singleView' && window.config.layout.singleView.tabbar.enabled) {`
3. Change the `path` parameter value according to the changes you made in `/partials/tabbar.html`

## Tab View Layout

### Set Tab View Layout as Default

1. Open `/assets/custom/js/config.js`
2. Inside `window.config.layout = {`
3. Set `default: 'tabView'`
4. Inside `tabView` object, you can enable or disable the `sidebar`, by setting the `enabled` value to `true` or `false` respectively.

### Set up Sidebar Menu for Tab View Layout

The layout for Sidebar Menu is defined inside `/partials/sidebar.html`

You can change the sidebar menu items as per your requirements.

{% hint style="info" %}
This Sidebar Menu is common for both Single View Layout and Tab View Layout.
{% endhint %}

### Set up Tabbar Menu for Tab View Layout

1. &#x20;Open `/partials/app.html`
2. Inside `<template>` `` ${$f7.config.layout.default == 'tabView' && $h` ``, define the tabbar menu items.
3. Inside `<script>` `if ($f7.config.layout.default == 'tabView') {`, change the `url` parameters for each view, as per the tabbar menu items you have defined in the above step. &#x20;

## Show & Hide Sidebar

You can control the Sidebar by using following functions:

```javascript
// Show Sidebar
app.sidebar.show();
// Hide Sidebar
app.sidebar.hide();
// Toggle Sidebar
app.sidebar.toggle();
```

## Show & Hide Tabbar

You can control the Tabbar by using following functions:

```javascript
// Show Tabbar
app.tabbar.show();
// Hide Tabbar
app.tabbar.hide();
```