vue-clusterize

An implementation of Clusterize.js in vue.

Works similar to v-for but only takes enough data to fill the viewport 3 times.
This data is then splitted into three clusters which will move and get filled with the right data on scrolling.

Demo

Disclaimer

Only for webpack workflows.

No jQuery dependency

Install

npm install --save-dev vue-clusterize

use version 0.2.0 before vue 1.0.24

Usage

# link the components up
components:
  "clusterize": require("vue-clusterize")
# or ES6
import clusterize from "vue-clusterize"
components: {
  "clusterize": clusterize
}

<clusterize :data="rowsData">
  <!-- default slot will be used as a template for a single row -->
  <div>{{data}}</div>
  <!-- (optional) loading slot will be displayed in each cluster which is busy fetching data - only with dynamic data -->
  <p slot="loading">loading...</p>
</clusterize>

For examples see dev/.

Available variables in template

Name	type	description
data	Object	a single datapiece (see `binding-name` in props)
loading	Number	will be 0 when finished loading data (only with dynamic data)
index	Number	index of the datapiece
height	Number	the height of a single row

you can add your own variables with the row-watchers prop.

example:

<clusterize @get-data="getData">
  <div v-if="!loading" v-bind:style="{height:height+'px'}">{{data}} - index: {{index}}</div>
  <p slot="loading">loading...</p>
</clusterize>

Props

Name	type	default	description
binding-name	String	"data"	name to access the data in your template
height	Number	null	Height of the clusterize element
auto-height	Boolean	false	If autoheight should be used (see below)
manual-start	Boolean	false	rendering doesn't start on `ready` (call `start` on the component instance instead)
data	Array	[]	static data to render
scroll-top	Number	0	sets scrollTop
scroll-left	Number	0	sets scrollLeft
cluster-size-fac	Number	1.5	determines the cluster size relative to visible size
row-height	Number	null	enforced row-height, will be determined at runtime when not set
template	String	-	row template (defaults to slot content)
style	Object	-	to pass trough style (vue object)
row-watchers	Object	{height: {vm: this, prop:"rowHeight"}}	variables, will be available in template
parent-vm	Object	this.$parent	where to resolve components in template
flex	Boolean	false	allow multiple items per row. See flex.
flex-initial	Number	20	data pieces to take for calculation of row height (should fill several rows)
flex-fac	Number	1	reduce to reduce items per row

Autoheight

There are two ways clusterize can be used, either use a fixed height:

<clusterize :data="rowsData" :height="400" v-ref:clusterize>

Or use autoheight:

<html style="height:100%">
  <body style="height:100%">
    <div style="position:relative">
      <clusterize :data="rowsData" auto-height>

In this case clusterize will always fill the nearest parent element with either position:relative; or position:absolute;.
Keep in mind, that padding of the parent will be ignored. If you need a padding, use a wrapper <div>.

Dynamic data

The clusterize instance emits two events to get dynamic data:

<clusterize @get-data="getData" @get-data-count="getDataCount">

methods:
  # For the first datapiece, first and last will be 0
  getData: function(first,last,cb) {
      # somehow get data
      cb(data)
    }
  getDataCount: function(cb) {
    cb(dataCount)
  }

To issue a manual redraw, call redraw() on the clusterize instance.

If you want to enforce a scroll-to-top use the scrollTop prop.

Flex

When using the flex prop, the usage changes. You will now recieve a array of row items per row which you can use in a v-for:

<clusterize :data="rowsData" flex>
  <div style="display:flex;align-items:center;justify-content:space-between">
    <div v-for="d in data">{{d}}</div>
  </div>
</clusterize>

The row height, items per row and rows per cluster will be recalculated on resize of clusterize.

Development

Clone repository.

npm install
npm run test

Browse to http://localhost:8080/.

To-Do

use html5 history mode or document.store to save scroll position

vue-comps/vue-clusterize