Grid view mode four edition

frontend/src/components/dialog/rename-grid-item-dialog.js

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+import React from 'react';
+import PropTypes from 'prop-types';
+import { gettext } from '../../utils/constants';
+import { Utils } from '../../utils/utils';
+import { Button, Modal, ModalHeader, Input, ModalBody, ModalFooter, Alert } from 'reactstrap';
+
+const propTypes = {
+  onRename: PropTypes.func.isRequired,
+  toggleCancel: PropTypes.func.isRequired,
+  checkDuplicatedName: PropTypes.func.isRequired,
+  dirent: PropTypes.object,
+};
+
+class Rename extends React.Component {
+  constructor(props) {
+    super(props);
+    this.state = {
+      newName: '',
+      errMessage: '',
+    };
+    this.newInput = React.createRef();
+  }
+
+  componentWillMount() {
+    this.setState({newName: this.props.dirent.name});
+  }
+
+  componentDidMount() {
+    let {dirent} = this.props;
+    this.changeState(dirent);
+    this.newInput.focus();
+    let type = dirent.type;
+    if (type === 'file') {
+      var endIndex = dirent.name.lastIndexOf('.md');
+      this.newInput.setSelectionRange(0, endIndex, 'forward');
+    } else {
+      this.newInput.setSelectionRange(0, -1);
+    }
+  }
+
+  componentWillReceiveProps(nextProps) {
+    this.changeState(nextProps.dirent);
+  }
+  
+  handleChange = (e) => {
+    this.setState({newName: e.target.value}); 
+  }
+
+  handleSubmit = () => {
+    let { isValid, errMessage } = this.validateInput();
+    if (!isValid) {
+      this.setState({errMessage : errMessage});
+    } else {
+      let isDuplicated = this.checkDuplicatedName();
+      if (isDuplicated) {
+        let errMessage = gettext('The name "{name}" is already taken. Please choose a different name.');
+        errMessage = errMessage.replace('{name}', Utils.HTMLescape(this.state.newName));
+        this.setState({errMessage: errMessage});
+      } else {
+        this.props.onRename(this.state.newName);
+      }
+    }
+  }
+
+  handleKeyPress = (e) => {
+    if (e.key === 'Enter') {
+      this.handleSubmit();
+    } 
+  }
+
+  toggle = () => {
+    this.props.toggleCancel();
+  }
+
+  changeState = (dirent) => {
+    let name = dirent.name;
+    this.setState({newName: name});
+  }
+
+  validateInput = () => {
+    let newName = this.state.newName.trim();
+    let isValid = true;
+    let errMessage = '';
+    if (!newName) {
+      isValid = false;
+      errMessage = gettext('Name is required.');
+      return { isValid, errMessage };
+    }
+
+    if (newName.indexOf('/') > -1) {
+      isValid = false;
+      errMessage = gettext('Name should not include ' + '\'/\'' + '.');
+      return { isValid, errMessage };
+    }
+
+    return { isValid, errMessage };
+  }
+
+  checkDuplicatedName = () => {
+    let isDuplicated = this.props.checkDuplicatedName(this.state.newName);
+    return isDuplicated;
+  }
+
+  render() {
+    let type = this.props.dirent.type;
+    return (
+      <Modal isOpen={true} toggle={this.toggle}>
+        <ModalHeader toggle={this.toggle}>{type === 'file' ? gettext('Rename File') : gettext('Rename Folder') }</ModalHeader>
+        <ModalBody>
+          <p>{type === 'file' ? gettext('New file name'): gettext('New folder name')}</p>
+          <Input onKeyPress={this.handleKeyPress} innerRef={input => {this.newInput = input;}} placeholder="newName" value={this.state.newName} onChange={this.handleChange} />
+          {this.state.errMessage && <Alert color="danger" className="mt-2">{this.state.errMessage}</Alert>}
+        </ModalBody>
+        <ModalFooter>
+          <Button color="secondary" onClick={this.toggle}>{gettext('Cancel')}</Button>
+          <Button color="primary" onClick={this.handleSubmit}>{gettext('Submit')}</Button>
+        </ModalFooter>
+      </Modal>
+    );
+  }
+}
+
+Rename.propTypes = propTypes;
+
+export default Rename;