use react in settings

src/settings/components/index.jsx

@@ -0,0 +1,78 @@
+import './site.scss';
+import React from 'react';
+import PropTypes from 'prop-types';
+import * as settingActions from 'settings/actions/setting';
+import { validate } from 'shared/validators/setting';
+
+class SettingsComponent extends React.Component {
+  constructor(props, context) {
+    super(props, context);
+
+    this.state = {
+      settings: {
+        json: '',
+      }
+    };
+    this.context.store.subscribe(this.stateChanged.bind(this));
+  }
+
+  componentDidMount() {
+    this.context.store.dispatch(settingActions.load());
+  }
+
+  stateChanged() {
+    let settings = this.context.store.getState();
+    this.setState({ settings });
+  }
+
+  render() {
+    return (
+      <div>
+        <h1>Configure Vim-Vixen</h1>
+
+        <form id='vimvixen-settings-form' className='vimvixen-settings-form'
+          onSubmit={this.saveSettings.bind(this)}>
+          <label htmlFor='load-from-json'>Load from JSON:</label>
+          <textarea name='plain-json' spellCheck='false'
+            onInput={this.onPlainJsonChanged.bind(this)}
+            onChange={this.bindValue.bind(this)}
+            value={this.state.settings.json} />
+          <button type='submit'>Save</button>
+        </form>
+      </div>
+    );
+  }
+
+  saveSettings(e) {
+    let settings = {
+      json: e.target.elements['plain-json'].value,
+    };
+    this.context.store.dispatch(settingActions.save(settings));
+    e.preventDefault();
+  }
+
+  onPlainJsonChanged(e) {
+    try {
+      let settings = JSON.parse(e.target.value);
+      validate(settings);
+      e.target.setCustomValidity('');
+    } catch (err) {
+      e.target.setCustomValidity(err.message);
+    }
+  }
+
+  bindValue(e) {
+    let next = Object.assign({}, this.state, {
+      settings: {
+        'json': e.target.value,
+      }
+    });
+    this.setState(next);
+  }
+}
+
+SettingsComponent.contextTypes = {
+  store: PropTypes.any,
+};
+
+export default SettingsComponent;