Consistent file uploads (#4699)

* FileSelect component

* Use FileSelect component in Actionbar

* Convert CreateAccount/Import to FileSelect

js/src/ui/Form/FileSelect/fileSelect.css

@@ -0,0 +1,52 @@
+/* Copyright 2015-2017 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/>.
+*/
+
+$backgroundNormal: rgba(0, 0, 0, 0.2);
+$backgroundNormalHover: rgba(0, 0, 0, 0.5);
+$backgroundError: rgba(255, 0, 0, 0.1);
+$backgroundErrorHover: rgba(255, 0, 0, 0.2);
+
+.dropzone {
+  align-items: center;
+  background: $backgroundNormal;
+  border: 2px dashed #666;
+  border-radius: 0.5em;
+  display: flex;
+  justify-content: center;
+  font-size: 1.2em;
+  height: 12em;
+  transition: all 0.5s ease;
+  width: 100%;
+
+  &:hover {
+    background: $backgroundNormalHover;
+    border-radius: 0;
+    cursor: pointer;
+  }
+
+  &.error {
+    background: $backgroundError;
+
+    &:hover {
+      background: $backgroundErrorHover;
+    }
+  }
+
+  .label {
+    color: #aaa;
+  }
+}

js/src/ui/Form/FileSelect/fileSelect.js

@@ -0,0 +1,76 @@
+// Copyright 2015-2017 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 React, { Component, PropTypes } from 'react';
+import Dropzone from 'react-dropzone';
+import { FormattedMessage } from 'react-intl';
+
+import { nodeOrStringProptype } from '~/util/proptypes';
+
+import styles from './fileSelect.css';
+
+export default class FileSelect extends Component {
+  static propTypes = {
+    className: PropTypes.string,
+    error: nodeOrStringProptype(),
+    label: nodeOrStringProptype(),
+    onSelect: PropTypes.func.isRequired
+  }
+
+  static defaultProps = {
+    label: (
+      <FormattedMessage
+        id='ui.fileSelect.defaultLabel'
+        defaultMessage='Drop a file here, or click to select a file to upload'
+      />
+    )
+  }
+
+  render () {
+    const { className, error, label } = this.props;
+
+    return (
+      <Dropzone
+        onDrop={ this.onDrop }
+        multiple={ false }
+        className={
+          [
+            styles.dropzone,
+            error
+              ? styles.error
+              : '',
+            className
+          ].join(' ') }
+      >
+        <div className={ styles.label }>
+          { error || label }
+        </div>
+      </Dropzone>
+    );
+  }
+
+  onDrop = (files) => {
+    const { onSelect } = this.props;
+    const reader = new FileReader();
+    const file = files[0];
+
+    reader.onload = (event) => {
+      onSelect(file.name, event.target.result);
+    };
+
+    reader.readAsText(file);
+  }
+}

js/src/ui/Form/FileSelect/fileSelect.spec.js

@@ -0,0 +1,118 @@
+// Copyright 2015-2017 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 FileSelect from './';
+
+const FILE = {
+  content: 'some test content',
+  name: 'someName'
+};
+
+let component;
+let globalFileReader;
+let instance;
+let onSelect;
+let processedFile;
+
+function stubReader () {
+  globalFileReader = global.FileReader;
+
+  global.FileReader = class {
+    readAsText (file) {
+      processedFile = file;
+
+      this.onload({
+        target: {
+          result: file.content
+        }
+      });
+    }
+  };
+}
+
+function restoreReader () {
+  global.FileReader = globalFileReader;
+}
+
+function render (props = {}) {
+  onSelect = sinon.stub();
+  component = shallow(
+    <FileSelect
+      onSelect={ onSelect }
+      { ...props }
+    />
+  );
+  instance = component.instance();
+
+  return component;
+}
+
+describe('ui/Form/FileSelect', () => {
+  beforeEach(() => {
+    stubReader();
+    render();
+  });
+
+  afterEach(() => {
+    restoreReader();
+  });
+
+  it('renders defaults', () => {
+    expect(component).to.be.ok;
+  });
+
+  describe('DropZone', () => {
+    let label;
+    let zone;
+
+    beforeEach(() => {
+      label = component.find('FormattedMessage');
+      zone = component.find('Dropzone');
+    });
+
+    it('renders the label', () => {
+      expect(label.props().id).to.equal('ui.fileSelect.defaultLabel');
+    });
+
+    it('attaches the onDrop event', () => {
+      expect(zone.props().onDrop).to.equal(instance.onDrop);
+    });
+
+    it('does not allow multiples', () => {
+      expect(zone.props().multiple).to.be.false;
+    });
+  });
+
+  describe('event methods', () => {
+    describe('onDrop', () => {
+      beforeEach(() => {
+        instance.onDrop([ FILE ]);
+      });
+
+      it('reads the file as dropped', () => {
+        expect(processedFile).to.deep.equal(FILE);
+      });
+
+      it('calls prop onSelect with file & content', () => {
+        expect(onSelect).to.have.been.calledWith(FILE.name, FILE.content);
+      });
+    });
+  });
+});

js/src/ui/Form/FileSelect/index.js

@@ -0,0 +1,17 @@
+// Copyright 2015-2017 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 './fileSelect';

js/src/ui/Form/index.js

@@ -16,6 +16,7 @@
 
 export AddressSelect from './AddressSelect';
 export DappUrlInput from './DappUrlInput';
+export FileSelect from './FileSelect';
 export FormWrap from './FormWrap';
 export Input from './Input';
 export InputAddress from './InputAddress';