zrmc/tab/tabbar.js

ZRMC is an ES7 React wrapper for Material Components Web.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = undefined;

var _objectWithoutProperties2 = require("babel-runtime/helpers/objectWithoutProperties");

var _objectWithoutProperties3 = _interopRequireDefault(_objectWithoutProperties2);

var _classCallCheck2 = require("babel-runtime/helpers/classCallCheck");

var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);

var _createClass2 = require("babel-runtime/helpers/createClass");

var _createClass3 = _interopRequireDefault(_createClass2);

var _possibleConstructorReturn2 = require("babel-runtime/helpers/possibleConstructorReturn");

var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2);

var _inherits2 = require("babel-runtime/helpers/inherits");

var _inherits3 = _interopRequireDefault(_inherits2);

var _react = require("react");

var _react2 = _interopRequireDefault(_react);

var _propTypes = require("prop-types");

var _propTypes2 = _interopRequireDefault(_propTypes);

var _ = require("../");

var _2 = _interopRequireDefault(_);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * mdc-tab-bar
 * See:
 * https://material.io/components/web/catalog/tabs/
 * http://material-components-web.appspot.com/tabs.html
 *
 */

var MDC_TABBAR = "mdc-tab-bar"; /**
                                 * Copyright (c) 2015-present, CWB SAS
                                 *
                                 * This source code is licensed under the MIT license found in the
                                 * LICENSE file in the root directory of this source tree.
                                 */

var Tabbar = function (_Component) {
  (0, _inherits3.default)(Tabbar, _Component);

  function Tabbar(props) {
    (0, _classCallCheck3.default)(this, Tabbar);

    var _this = (0, _possibleConstructorReturn3.default)(this, (Tabbar.__proto__ || Object.getPrototypeOf(Tabbar)).call(this, props));

    _this.handleTabSelect = function (text, tabId) {
      if (_this.state.activeTab !== tabId) {
        if (_this.props.onChange) {
          _this.props.onChange(text, tabId);
        }
        _this.setState({ activeTab: tabId });
      }
    };

    var activeTab = props.activeTab;

    _this.state = { activeTab: activeTab };
    _this.ref = null;
    _this.activeRef = null;
    _this.indicatorRef = null;
    return _this;
  }

  (0, _createClass3.default)(Tabbar, [{
    key: "componentDidMount",
    value: function componentDidMount() {
      this.updateIndicator();
    }
  }, {
    key: "componentDidUpdate",
    value: function componentDidUpdate() {
      this.updateIndicator();
    }
  }, {
    key: "updateIndicator",
    value: function updateIndicator() {
      if (this.activeRef && this.activeRef.ref && this.ref && this.indicatorRef) {
        var r = this.ref.getBoundingClientRect();
        var rect = this.activeRef.ref.getBoundingClientRect();
        var width = this.ref.clientWidth;
        var tabWidth = rect.width;
        var tabLeft = rect.left - r.left;
        var scaledWidth = tabWidth / width;
        var style = "transform: translateX(" + tabLeft + "px) scale(" + scaledWidth + ", 1); visibility: visible;";
        if (this.props.activeColor) {
          style += " background-color:" + this.props.activeColor;
        }
        this.indicatorRef.style = style;
      }
    }
  }, {
    key: "render",
    value: function render() {
      var _this2 = this;

      var _props = this.props,
          children = _props.children,
          onChange = _props.onChange,
          color = _props.color,
          activeColor = _props.activeColor,
          ripple = _props.ripple,
          props = (0, _objectWithoutProperties3.default)(_props, ["children", "onChange", "color", "activeColor", "ripple"]);

      var classes = MDC_TABBAR;
      var text = false;
      var icon = false;
      var activeTab = this.state.activeTab;
      // Check icon / text from children Tabs

      _react.Children.forEach(children, function (child) {
        if (child.props && child.props.text) {
          text = true;
        }
        if (child.props && child.props.icon) {
          icon = true;
        }
      });
      if (text && icon) {
        classes += " mdc-tab--with-icon-and-text";
      } else if (icon) {
        classes += " mdc-tab-bar--icon-tab-bar";
      }
      // let style;
      /* if (activeColor) {
        style = { backgroundColor: activeColor };
      } */
      var element = _react2.default.createElement(
        "div",
        {
          className: classes,
          ref: function ref(c) {
            _this2.ref = c;
          }
        },
        _react2.default.createElement(
          "div",
          { className: "mdc-tab-scroller" },
          _react2.default.createElement(
            "div",
            { className: "mdc-tab-scroller__scroll-area mdc-tab-scroller__scroll-area--scroll" },
            _react2.default.createElement(
              "div",
              { className: "mdc-tab-scroller__scroll-content" },
              _react.Children.map(children, function (child, tabId) {
                return _react2.default.cloneElement(child, {
                  tabId: tabId,
                  active: tabId === activeTab,
                  ripple: ripple,
                  color: tabId === activeTab ? activeColor : color,
                  ref: function ref(c) {
                    if (tabId === activeTab) {
                      _this2.activeRef = c;
                    }
                  },
                  onTabSelect: _this2.handleTabSelect
                });
              })
            )
          )
        )
      );
      return _2.default.render(element, props);
    }
  }], [{
    key: "getDerivedStateFromProps",
    value: function getDerivedStateFromProps(nextProps, prevState) {
      var activeTab = nextProps.activeTab;

      if (activeTab !== prevState.activeTab && !nextProps.derivedState) {
        return { activeTab: activeTab };
      }
      return null;
    }
  }]);
  return Tabbar;
}(_react.Component);

exports.default = Tabbar;


Tabbar.defaultProps = {
  mdcElement: MDC_TABBAR,
  children: null,
  activeTab: 0,
  onChange: null,
  color: null,
  activeColor: null,
  ripple: false
};

Tabbar.propTypes = {
  mdcElement: _propTypes2.default.string,
  children: _propTypes2.default.node,
  activeTab: _propTypes2.default.number,
  onChange: _propTypes2.default.func,
  color: _propTypes2.default.string,
  activeColor: _propTypes2.default.string,
  ripple: _propTypes2.default.bool
};