ant-design-vue/lib/vc-tabs/src/ScrollableTabBarNode.js

An enterprise-class UI design language and Vue-based implementation

'use strict';

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

var _babelHelperVueJsxMergeProps = require('babel-helper-vue-jsx-merge-props');

var _babelHelperVueJsxMergeProps2 = _interopRequireDefault(_babelHelperVueJsxMergeProps);

var _defineProperty2 = require('babel-runtime/helpers/defineProperty');

var _defineProperty3 = _interopRequireDefault(_defineProperty2);

var _extends2 = require('babel-runtime/helpers/extends');

var _extends3 = _interopRequireDefault(_extends2);

var _debounce = require('lodash/debounce');

var _debounce2 = _interopRequireDefault(_debounce);

var _resizeObserverPolyfill = require('resize-observer-polyfill');

var _resizeObserverPolyfill2 = _interopRequireDefault(_resizeObserverPolyfill);

var _vueTypes = require('../../_util/vue-types');

var _vueTypes2 = _interopRequireDefault(_vueTypes);

var _BaseMixin = require('../../_util/BaseMixin');

var _BaseMixin2 = _interopRequireDefault(_BaseMixin);

var _propsUtil = require('../../_util/props-util');

var _utils = require('./utils');

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

function noop() {}
exports['default'] = {
  name: 'ScrollableTabBarNode',
  mixins: [_BaseMixin2['default']],
  props: {
    activeKey: _vueTypes2['default'].any,
    getRef: _vueTypes2['default'].func.def(function () {}),
    saveRef: _vueTypes2['default'].func.def(function () {}),
    tabBarPosition: _vueTypes2['default'].oneOf(['left', 'right', 'top', 'bottom']).def('left'),
    prefixCls: _vueTypes2['default'].string.def(''),
    scrollAnimated: _vueTypes2['default'].bool.def(true),
    navWrapper: _vueTypes2['default'].func.def(function (arg) {
      return arg;
    }),
    prevIcon: _vueTypes2['default'].any,
    nextIcon: _vueTypes2['default'].any,
    direction: _vueTypes2['default'].string
  },

  data: function data() {
    this.offset = 0;
    this.prevProps = (0, _extends3['default'])({}, this.$props);
    return {
      next: false,
      prev: false
    };
  },

  watch: {
    tabBarPosition: function tabBarPosition() {
      var _this = this;

      this.tabBarPositionChange = true;
      this.$nextTick(function () {
        _this.setOffset(0);
      });
    }
  },

  mounted: function mounted() {
    var _this2 = this;

    this.$nextTick(function () {
      _this2.updatedCal();
      _this2.debouncedResize = (0, _debounce2['default'])(function () {
        _this2.setNextPrev();
        _this2.scrollToActiveTab();
      }, 200);
      _this2.resizeObserver = new _resizeObserverPolyfill2['default'](_this2.debouncedResize);
      _this2.resizeObserver.observe(_this2.$props.getRef('container'));
    });
  },
  updated: function updated() {
    var _this3 = this;

    this.$nextTick(function () {
      _this3.updatedCal(_this3.prevProps);
      _this3.prevProps = (0, _extends3['default'])({}, _this3.$props);
    });
  },
  beforeDestroy: function beforeDestroy() {
    if (this.resizeObserver) {
      this.resizeObserver.disconnect();
    }
    if (this.debouncedResize && this.debouncedResize.cancel) {
      this.debouncedResize.cancel();
    }
  },

  methods: {
    updatedCal: function updatedCal(prevProps) {
      var _this4 = this;

      var props = this.$props;
      if (prevProps && prevProps.tabBarPosition !== props.tabBarPosition) {
        this.setOffset(0);
        return;
      }
      // wait next, prev show hide
      if (this.isNextPrevShown(this.$data) !== this.isNextPrevShown(this.setNextPrev())) {
        this.$forceUpdate();
        this.$nextTick(function () {
          _this4.scrollToActiveTab();
        });
      } else if (!prevProps || props.activeKey !== prevProps.activeKey) {
        // can not use props.activeKey
        this.scrollToActiveTab();
      }
    },
    setNextPrev: function setNextPrev() {
      var navNode = this.$props.getRef('nav');
      var navTabsContainer = this.$props.getRef('navTabsContainer');
      var navNodeWH = this.getScrollWH(navTabsContainer || navNode);
      // Add 1px to fix `offsetWidth` with decimal in Chrome not correct handle
      // https://github.com/ant-design/ant-design/issues/13423
      var containerWH = this.getOffsetWH(this.$props.getRef('container')) + 1;
      var navWrapNodeWH = this.getOffsetWH(this.$props.getRef('navWrap'));
      var offset = this.offset;

      var minOffset = containerWH - navNodeWH;
      var next = this.next,
          prev = this.prev;

      if (minOffset >= 0) {
        next = false;
        this.setOffset(0, false);
        offset = 0;
      } else if (minOffset < offset) {
        next = true;
      } else {
        next = false;
        // Fix https://github.com/ant-design/ant-design/issues/8861
        // Test with container offset which is stable
        // and set the offset of the nav wrap node
        var realOffset = navWrapNodeWH - navNodeWH;
        this.setOffset(realOffset, false);
        offset = realOffset;
      }

      if (offset < 0) {
        prev = true;
      } else {
        prev = false;
      }

      this.setNext(next);
      this.setPrev(prev);
      return {
        next: next,
        prev: prev
      };
    },
    getOffsetWH: function getOffsetWH(node) {
      var tabBarPosition = this.$props.tabBarPosition;
      var prop = 'offsetWidth';
      if (tabBarPosition === 'left' || tabBarPosition === 'right') {
        prop = 'offsetHeight';
      }
      return node[prop];
    },
    getScrollWH: function getScrollWH(node) {
      var tabBarPosition = this.tabBarPosition;
      var prop = 'scrollWidth';
      if (tabBarPosition === 'left' || tabBarPosition === 'right') {
        prop = 'scrollHeight';
      }
      return node[prop];
    },
    getOffsetLT: function getOffsetLT(node) {
      var tabBarPosition = this.$props.tabBarPosition;
      var prop = 'left';
      if (tabBarPosition === 'left' || tabBarPosition === 'right') {
        prop = 'top';
      }
      return node.getBoundingClientRect()[prop];
    },
    setOffset: function setOffset(offset) {
      var checkNextPrev = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;

      var target = Math.min(0, offset);
      if (this.offset !== target) {
        this.offset = target;
        var navOffset = {};
        var tabBarPosition = this.$props.tabBarPosition;
        var navStyle = this.$props.getRef('nav').style;
        var transformSupported = (0, _utils.isTransform3dSupported)(navStyle);
        if (tabBarPosition === 'left' || tabBarPosition === 'right') {
          if (transformSupported) {
            navOffset = {
              value: 'translate3d(0,' + target + 'px,0)'
            };
          } else {
            navOffset = {
              name: 'top',
              value: target + 'px'
            };
          }
        } else if (transformSupported) {
          if (this.$props.direction === 'rtl') {
            target = -target;
          }
          navOffset = {
            value: 'translate3d(' + target + 'px,0,0)'
          };
        } else {
          navOffset = {
            name: 'left',
            value: target + 'px'
          };
        }
        if (transformSupported) {
          (0, _utils.setTransform)(navStyle, navOffset.value);
        } else {
          navStyle[navOffset.name] = navOffset.value;
        }
        if (checkNextPrev) {
          this.setNextPrev();
        }
      }
    },
    setPrev: function setPrev(v) {
      if (this.prev !== v) {
        this.prev = v;
      }
    },
    setNext: function setNext(v) {
      if (!v) {
        // debugger
      }
      if (this.next !== v) {
        this.next = v;
      }
    },
    isNextPrevShown: function isNextPrevShown(state) {
      if (state) {
        return state.next || state.prev;
      }
      return this.next || this.prev;
    },
    prevTransitionEnd: function prevTransitionEnd(e) {
      if (e.propertyName !== 'opacity') {
        return;
      }
      var container = this.$props.getRef('container');
      this.scrollToActiveTab({
        target: container,
        currentTarget: container
      });
    },
    scrollToActiveTab: function scrollToActiveTab(e) {
      var activeTab = this.$props.getRef('activeTab');
      var navWrap = this.$props.getRef('navWrap');
      if (e && e.target !== e.currentTarget || !activeTab) {
        return;
      }

      // when not scrollable or enter scrollable first time, don't emit scrolling
      var needToSroll = this.isNextPrevShown() && this.lastNextPrevShown;
      this.lastNextPrevShown = this.isNextPrevShown();
      if (!needToSroll) {
        return;
      }

      var activeTabWH = this.getScrollWH(activeTab);
      var navWrapNodeWH = this.getOffsetWH(navWrap);
      var offset = this.offset;

      var wrapOffset = this.getOffsetLT(navWrap);
      var activeTabOffset = this.getOffsetLT(activeTab);
      if (wrapOffset > activeTabOffset) {
        offset += wrapOffset - activeTabOffset;
        this.setOffset(offset);
      } else if (wrapOffset + navWrapNodeWH < activeTabOffset + activeTabWH) {
        offset -= activeTabOffset + activeTabWH - (wrapOffset + navWrapNodeWH);
        this.setOffset(offset);
      }
    },
    prevClick: function prevClick(e) {
      this.__emit('prevClick', e);
      var navWrapNode = this.$props.getRef('navWrap');
      var navWrapNodeWH = this.getOffsetWH(navWrapNode);
      var offset = this.offset;

      this.setOffset(offset + navWrapNodeWH);
    },
    nextClick: function nextClick(e) {
      this.__emit('nextClick', e);
      var navWrapNode = this.$props.getRef('navWrap');
      var navWrapNodeWH = this.getOffsetWH(navWrapNode);
      var offset = this.offset;

      this.setOffset(offset - navWrapNodeWH);
    }
  },
  render: function render() {
    var _ref, _ref2, _navClasses, _ref3;

    var h = arguments[0];
    var next = this.next,
        prev = this.prev;
    var _$props = this.$props,
        prefixCls = _$props.prefixCls,
        scrollAnimated = _$props.scrollAnimated,
        navWrapper = _$props.navWrapper;

    var prevIcon = (0, _propsUtil.getComponentFromProp)(this, 'prevIcon');
    var nextIcon = (0, _propsUtil.getComponentFromProp)(this, 'nextIcon');
    var showNextPrev = prev || next;

    var prevButton = h(
      'span',
      {
        on: {
          'click': prev ? this.prevClick : noop,
          'transitionend': this.prevTransitionEnd
        },
        attrs: {
          unselectable: 'unselectable'
        },
        'class': (_ref = {}, (0, _defineProperty3['default'])(_ref, prefixCls + '-tab-prev', 1), (0, _defineProperty3['default'])(_ref, prefixCls + '-tab-btn-disabled', !prev), (0, _defineProperty3['default'])(_ref, prefixCls + '-tab-arrow-show', showNextPrev), _ref)
      },
      [prevIcon || h('span', { 'class': prefixCls + '-tab-prev-icon' })]
    );

    var nextButton = h(
      'span',
      {
        on: {
          'click': next ? this.nextClick : noop
        },
        attrs: {
          unselectable: 'unselectable'
        },
        'class': (_ref2 = {}, (0, _defineProperty3['default'])(_ref2, prefixCls + '-tab-next', 1), (0, _defineProperty3['default'])(_ref2, prefixCls + '-tab-btn-disabled', !next), (0, _defineProperty3['default'])(_ref2, prefixCls + '-tab-arrow-show', showNextPrev), _ref2)
      },
      [nextIcon || h('span', { 'class': prefixCls + '-tab-next-icon' })]
    );

    var navClassName = prefixCls + '-nav';
    var navClasses = (_navClasses = {}, (0, _defineProperty3['default'])(_navClasses, navClassName, true), (0, _defineProperty3['default'])(_navClasses, scrollAnimated ? navClassName + '-animated' : navClassName + '-no-animated', true), _navClasses);

    return h(
      'div',
      (0, _babelHelperVueJsxMergeProps2['default'])([{
        'class': (_ref3 = {}, (0, _defineProperty3['default'])(_ref3, prefixCls + '-nav-container', 1), (0, _defineProperty3['default'])(_ref3, prefixCls + '-nav-container-scrolling', showNextPrev), _ref3),
        key: 'container'
      }, {
        directives: [{
          name: 'ant-ref',
          value: this.saveRef('container')
        }]
      }]),
      [prevButton, nextButton, h(
        'div',
        (0, _babelHelperVueJsxMergeProps2['default'])([{
          'class': prefixCls + '-nav-wrap'
        }, {
          directives: [{
            name: 'ant-ref',
            value: this.saveRef('navWrap')
          }]
        }]),
        [h(
          'div',
          { 'class': prefixCls + '-nav-scroll' },
          [h(
            'div',
            (0, _babelHelperVueJsxMergeProps2['default'])([{
              'class': navClasses
            }, {
              directives: [{
                name: 'ant-ref',
                value: this.saveRef('nav')
              }]
            }]),
            [navWrapper(this.$slots['default'])]
          )]
        )]
      )]
    );
  }
};