# JSON Forms - More Forms. Less Code

_Complex Forms in the blink of an eye_

JSON Forms eliminates the tedious task of writing fully-featured forms by hand by leveraging the capabilities of JSON, JSON Schema and Javascript.

## Vue Vanilla Renderers

This is the JSON Forms Vue Vanilla renderers package which provides a HTML5-based renderer set for [JSON Forms Vue](https://github.com/eclipsesource/jsonforms/blob/master/packages/vue).

### JSON Forms Vue seed app

See our [JSON Forms Vue seed repository](https://github.com/eclipsesource/jsonforms-vue-seed) to get started as quickly as possible.

### Quick start

Install JSON Forms Core, Vue and Vue Vanilla Renderers

```bash
npm i --save @jsonforms/core @jsonforms/vue @jsonforms/vue-vanilla
```

Also add the packages to the transpile dependencies in the `vue.config.js` file:

```js
module.exports = {
  transpileDependencies: [
    '@jsonforms/core',
    '@jsonforms/vue',
    '@jsonforms/vue-vanilla',
  ],
};
```

Use the `json-forms` component for each form you want to render and hand over the renderer set.

```vue
<script>
import { JsonForms } from '@jsonforms/vue';
import { vanillaRenderers } from '@jsonforms/vue-vanilla';
import { defineComponent } from 'vue';

const renderers = [
  ...vanillaRenderers,
  // here you can add custom renderers
];

export default defineComponent({
  components: {
    JsonForms,
  },
  data() {
    return {
      renderers: Object.freeze(renderers),

      data: {
        number: 5,
      },
      schema: {
        properties: {
          number: {
            type: 'number',
          },
        },
      },
      uischema: {
        type: 'VerticalLayout',
        elements: [
          {
            type: 'Control',
            scope: '#/properties/number',
          },
        ],
      },
    };
  },
  methods: {
    onChange(event) {
      this.data = event.data;
    },
  },
});
</script>
<template>
  <json-forms
    :data="data"
    :schema="schema"
    :uischema="uischema"
    :renderers="renderers"
    @change="onChange"
  />
</template>
```

By default the Vanilla Renderers don't apply any CSS at all.
For a quick start you can use `@jsonforms/vue-vanilla/vanilla.css`.

For more information on how JSON Forms can be configured, please see the [README of `@jsonforms/vue`](https://github.com/eclipsesource/jsonforms/blob/master/packages/vue/README.md).

### Styling

Each rendered HTML element specifies a CSS class which can be used to style it.
This process can also be customized so that each element declares user-specified CSS classes.
Therefore JSON Forms Vue Vanilla can be integrated with any CSS-only UI framework quite easily.

You can find the default CSS classes in `[defaultStyles.ts](https://github.com/eclipsesource/jsonforms/blob/master/packages/vue-vanilla/src/styles/defaultStyles.ts).

To render your own classes simply `provide` them as `styles`.
These `styles` replace the `defaultStyles`.
If you want to fall back to `defaultStyles` or combine them with your own classes you'll need to do so programmatically, e.g.:

```vue
<script>
import { JsonForms } from '@jsonforms/vue';
import {
  defaultStyles,
  mergeStyles,
  vanillaRenderers,
} from '@jsonforms/vue-vanilla';
import { defineComponent } from 'vue';

// mergeStyles combines all classes from both styles definitions
const myStyles = mergeStyles(defaultStyles, {
  control: { root: 'my-control' },
});

export default defineComponent({
  name: 'app',
  components: {
    JsonForms,
  },
  data() {
    return {
      renderers: Object.freeze(vanillaRenderers),
      data: {
        number: 5,
      },
      schema: {
        properties: {
          number: {
            type: 'number',
          },
        },
      },
      uischema: {
        type: 'VerticalLayout',
        elements: [
          {
            type: 'Control',
            scope: '#/properties/number',
          },
        ],
      },
    };
  },
  methods: {
    onChange(event) {
      this.data = event.data;
    },
  },
  provide() {
    return {
      styles: myStyles,
    };
  },
});
</script>
<template>
  <json-forms
    :data="data"
    :schema="schema"
    :uischema="uischema"
    :renderers="renderers"
    @change="onChange"
  />
</template>
```

You can also use specify styles in the ui schema via the `options.styles` property.
Attributes specified here override the respective `defaultStyles` or provided `styles`.
Attributes not specified here fall back to either the `defaultStyles` or provided `styles`.

```js
{
  "type": "Control",
  "scope": "#/properties/name",
  "options": {
    "styles": {
      "control": {
        "root": "my-control-root"
      }
    }
  }
}
```

## License

The JSONForms project is licensed under the MIT License. See the [LICENSE file](https://github.com/eclipsesource/jsonforms/blob/master/LICENSE) for more information.

## Roadmap

Our current roadmap is available [here](https://github.com/eclipsesource/jsonforms/blob/master/ROADMAP.md).

## Migration

See our [migration guide](https://github.com/eclipsesource/jsonforms/blob/master/MIGRATION.md) when updating JSON Forms.