# All files / components/Sender index.js

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     import React, { Component } from 'react';
    import PropTypes from 'prop-types';
    import styled from 'styled-components';
    import { rgba } from 'polished';
    import { Icon } from 'react-icons-kit';
    import { ic_send as Send } from 'react-icons-kit/md/ic_send';

    import { textColor, themeColor } from '../../utils/style';

    const MdSend = (props) => <Icon icon={Send} {...props} />;

    const StyledSenderContainer = styled.div`
      min-height: 56px;
      max-height: 200px;
      color: ${(props) => textColor(props.theme, 'light', 'primary')};
      align-items: center;
      display: flex;

      border-radius: 0;
      flex-shrink: 0;
      & > div {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;

        min-height: 56px;
        max-height: 200px;
      }

      textarea {
        position: absolute;
        bottom: 0;
        left: 0;
        border: 0;
        box-sizing: border-box;
        padding: 22px 100px 10px 30px;
        width: 100%;
        height: 100%;

        color: ${(props) => textColor(props.theme, 'light', 'primary')};
        font-size: ${(props) => props.theme.typography.classes.footnote.fontSize};
        line-height: ${(props) => props.theme.typography.classes.footnote.lineHeight};
        font-weight: ${(props) => props.theme.typography.weights.fontWeightMedium};

        cursor: ${(props) => props.disabled ? 'not-allowed' : 'default'};

        white-space: pre-wrap;
        background-color: ${(props) => rgba(themeColor(props.theme, 'foreground', 'base'), 0.1)};
        resize: none;
        border: none;
      }

      textarea:focus {
        background-color: ${(props) => props.theme.palette.common.white};
        outline: none;
        box-shadow: 0 0 100px 0 rgba(150,165,190,.24);
        transition: background-color .2s ease,box-shadow .2s ease,-webkit-box-shadow .2s ease;
      }

      textarea::placeholder {
        color: ${(props) => props.disabled ? rgba(textColor(props.theme, 'light', 'hint'), 0.1) : textColor(props.theme, 'light', 'hint')};
      }
    `;

    const StyledSenderButtonsContainer = styled.div`
      position: absolute;
      top: 0px;
      right: 30px;
      height: 56px;
      line-height: 56px;
      button {
        border: none;
        background: transparent;
      }
    `;

    const StyledActionButton = styled.button`
        cursor: ${(props) => props.disabled ? 'not-allowed' : 'pointer'};
        color: ${(props) => props.disabled ? rgba(textColor(props.theme, 'light', 'hint'), 0.1) : rgba(textColor(props.theme, 'light', 'hint'), 0.7)};
    `;

    class Sender extends Component {
      constructor(props) {
        super(props);
        this.myTextArea = null;
        this.state = { input: '', validInput: false };
        this.handleChange = this.handleChange.bind(this);
        this.handleKeyDown = this.handleKeyDown.bind(this);
        this.focusOnTextArea = this.focusOnTextArea.bind(this);
        this.handleSend = this.handleSend.bind(this);
      }

      handleChange(e) {
        const { onChange } = this.props;
        const newValue = e.target.value;
        const validInput = newValue.trim().length > 0;

        this.setState({ input: newValue });
        this.setState({ validInput });

        if (onChange && validInput) {
          onChange(newValue);
        }
      }

      handleKeyDown(e) {
        Eif (e.keyCode === 13 && e.shiftKey === false) {
          this.handleSend();
          e.preventDefault();
        }
      }

      focusOnTextArea() {
        this.myTextArea.focus();
      }

      handleSend() {
        const { input, validInput } = this.state;
        const { sendMessage } = this.props;
        if (validInput) {
          sendMessage(input);
          this.setState({ input: '', validInput: false });
        }
      }

      render() {
        /* eslint-disable jsx-a11y/no-autofocus */
        const { placeholder, disabled } = this.props;
        const { input, validInput } = this.state;
        return (
          <StyledSenderContainer disabled={disabled}>
            <div
              role="button"
              onKeyDown={this.focusOnTextArea}
              onClick={this.focusOnTextArea}
              tabIndex={0}
            >
              <textarea
                ref={(texta) => { this.myTextArea = texta; }}
                type="text"
                name="message"
                value={input}
                placeholder={placeholder}
                disabled={disabled}
                autoComplete="off"
                autoFocus
                onChange={this.handleChange}
                onKeyDown={this.handleKeyDown}
              />
              <StyledSenderButtonsContainer>
                <StyledActionButton onClick={this.handleSend} disabled={disabled || !validInput}>
                  <MdSend size={20} />
                </StyledActionButton>
              </StyledSenderButtonsContainer>
            </div>
          </StyledSenderContainer>
        );
      }
    }

    Sender.propTypes = {
      onChange: PropTypes.func,
      sendMessage: PropTypes.func,
      placeholder: PropTypes.string,
      disabled: PropTypes.bool,
    };

    Sender.displayName = 'Sender';

    export default Sender;