Additional building-block UI components (#4239)

* Currency WIP

* Expand tests

* Pass className

* Add QrCode

* Export new components in ~/ui

* s/this.props.netSymbol/netSymbol/

* Fix import case

js/src/ui/QrCode/index.js

@@ -0,0 +1,17 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+export default from './qrCode';

js/src/ui/QrCode/qrCode.js

@@ -0,0 +1,83 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+// https://github.com/cmanzana/qrcode-npm packaging the standard
+// https://github.com/kazuhikoarase/qrcode-generator
+import { qrcode } from 'qrcode-npm';
+import React, { Component, PropTypes } from 'react';
+
+const QROPTS = {
+  CODE_TYPE: 4,
+  ERROR_LEVEL: 'M'
+};
+
+export default class QrCode extends Component {
+  static propTypes = {
+    className: PropTypes.string,
+    margin: PropTypes.number,
+    size: PropTypes.number,
+    value: PropTypes.string.isRequired
+  };
+
+  static defaultProps = {
+    margin: 2,
+    size: 5
+  };
+
+  state = {
+    image: null
+  };
+
+  componentWillMount () {
+    this.generateCode(this.props);
+  }
+
+  componentWillReceiveProps (nextProps) {
+    const hasChanged = nextProps.value !== this.props.value ||
+      nextProps.size !== this.props.size ||
+      nextProps.margin !== this.props.margin;
+
+    if (hasChanged) {
+      this.generateCode(nextProps);
+    }
+  }
+
+  render () {
+    const { className } = this.props;
+    const { image } = this.state;
+
+    return (
+      <div
+        className={ className }
+        dangerouslySetInnerHTML={ {
+          __html: image
+        } }
+      />
+    );
+  }
+
+  generateCode (props) {
+    const { margin, size, value } = props;
+    const qr = qrcode(QROPTS.CODE_TYPE, QROPTS.ERROR_LEVEL);
+
+    qr.addData(value);
+    qr.make();
+
+    this.setState({
+      image: qr.createImgTag(size, margin)
+    });
+  }
+}

js/src/ui/QrCode/qrCode.spec.js

@@ -0,0 +1,108 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import { shallow } from 'enzyme';
+import React from 'react';
+import sinon from 'sinon';
+
+import QrCode from './';
+
+const DEFAULT_PROPS = {
+  margin: 1,
+  size: 4,
+  value: 'someTestValue'
+};
+
+let component;
+let instance;
+
+function render (props = {}) {
+  component = shallow(
+    <QrCode
+      { ...DEFAULT_PROPS }
+      { ...props }
+    />
+  );
+  instance = component.instance();
+
+  return component;
+}
+
+describe('ui/QrCode', () => {
+  beforeEach(() => {
+    render();
+    sinon.spy(instance, 'generateCode');
+  });
+
+  afterEach(() => {
+    instance.generateCode.restore();
+  });
+
+  it('renders defaults', () => {
+    expect(component).to.be.ok;
+  });
+
+  describe('lifecycle', () => {
+    describe('componentWillMount', () => {
+      it('generates the image on mount', () => {
+        instance.componentWillMount();
+        expect(instance.generateCode).to.have.been.calledWith(DEFAULT_PROPS);
+      });
+    });
+
+    describe('componentWillReceiveProps', () => {
+      it('does not re-generate when no props changed', () => {
+        instance.componentWillReceiveProps(DEFAULT_PROPS);
+        expect(instance.generateCode).not.to.have.been.called;
+      });
+
+      it('does not re-generate when className changed', () => {
+        const nextProps = Object.assign({}, DEFAULT_PROPS, { className: 'test' });
+
+        instance.componentWillReceiveProps(nextProps);
+        expect(instance.generateCode).not.to.have.been.called;
+      });
+
+      it('does not re-generate when additional property changed', () => {
+        const nextProps = Object.assign({}, DEFAULT_PROPS, { something: 'test' });
+
+        instance.componentWillReceiveProps(nextProps);
+        expect(instance.generateCode).not.to.have.been.called;
+      });
+
+      it('does re-generate when value changed', () => {
+        const nextProps = Object.assign({}, DEFAULT_PROPS, { value: 'somethingElse' });
+
+        instance.componentWillReceiveProps(nextProps);
+        expect(instance.generateCode).to.have.been.calledWith(nextProps);
+      });
+
+      it('does re-generate when size changed', () => {
+        const nextProps = Object.assign({}, DEFAULT_PROPS, { size: 10 });
+
+        instance.componentWillReceiveProps(nextProps);
+        expect(instance.generateCode).to.have.been.calledWith(nextProps);
+      });
+
+      it('does re-generate when margin changed', () => {
+        const nextProps = Object.assign({}, DEFAULT_PROPS, { margin: 10 });
+
+        instance.componentWillReceiveProps(nextProps);
+        expect(instance.generateCode).to.have.been.calledWith(nextProps);
+      });
+    });
+  });
+});