*

static/element-ui/lib/utils/vue-popper.js

@@ -0,0 +1,184 @@
+'use strict';
+
+exports.__esModule = true;
+
+var _vue = require('vue');
+
+var _vue2 = _interopRequireDefault(_vue);
+
+var _popup = require('element-ui/lib/utils/popup');
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var PopperJS = _vue2.default.prototype.$isServer ? function () {} : require('./popper');
+var stop = function stop(e) {
+  return e.stopPropagation();
+};
+
+/**
+ * @param {HTMLElement} [reference=$refs.reference] - The reference element used to position the popper.
+ * @param {HTMLElement} [popper=$refs.popper] - The HTML element used as popper, or a configuration used to generate the popper.
+ * @param {String} [placement=button] - Placement of the popper accepted values: top(-start, -end), right(-start, -end), bottom(-start, -end), left(-start, -end)
+ * @param {Number} [offset=0] - Amount of pixels the popper will be shifted (can be negative).
+ * @param {Boolean} [visible=false] Visibility of the popup element.
+ * @param {Boolean} [visible-arrow=false] Visibility of the arrow, no style.
+ */
+exports.default = {
+  props: {
+    placement: {
+      type: String,
+      default: 'bottom'
+    },
+    boundariesPadding: {
+      type: Number,
+      default: 5
+    },
+    reference: {},
+    popper: {},
+    offset: {
+      default: 0
+    },
+    value: Boolean,
+    visibleArrow: Boolean,
+    transition: String,
+    appendToBody: {
+      type: Boolean,
+      default: true
+    },
+    popperOptions: {
+      type: Object,
+      default: function _default() {
+        return {
+          gpuAcceleration: false
+        };
+      }
+    }
+  },
+
+  data: function data() {
+    return {
+      showPopper: false,
+      currentPlacement: ''
+    };
+  },
+
+
+  watch: {
+    value: {
+      immediate: true,
+      handler: function handler(val) {
+        this.showPopper = val;
+        this.$emit('input', val);
+      }
+    },
+
+    showPopper: function showPopper(val) {
+      val ? this.updatePopper() : this.destroyPopper();
+      this.$emit('input', val);
+    }
+  },
+
+  methods: {
+    createPopper: function createPopper() {
+      var _this = this;
+
+      if (this.$isServer) return;
+      this.currentPlacement = this.currentPlacement || this.placement;
+      if (!/^(top|bottom|left|right)(-start|-end)?$/g.test(this.currentPlacement)) {
+        return;
+      }
+
+      var options = this.popperOptions;
+      var popper = this.popperElm = this.popperElm || this.popper || this.$refs.popper;
+      var reference = this.referenceElm = this.referenceElm || this.reference || this.$refs.reference;
+
+      if (!reference && this.$slots.reference && this.$slots.reference[0]) {
+        reference = this.referenceElm = this.$slots.reference[0].elm;
+      }
+
+      if (!popper || !reference) return;
+      if (this.visibleArrow) this.appendArrow(popper);
+      if (this.appendToBody) document.body.appendChild(this.popperElm);
+      if (this.popperJS && this.popperJS.destroy) {
+        this.popperJS.destroy();
+      }
+
+      options.placement = this.currentPlacement;
+      options.offset = this.offset;
+      this.popperJS = new PopperJS(reference, popper, options);
+      this.popperJS.onCreate(function (_) {
+        _this.$emit('created', _this);
+        _this.resetTransformOrigin();
+        _this.$nextTick(_this.updatePopper);
+      });
+      if (typeof options.onUpdate === 'function') {
+        this.popperJS.onUpdate(options.onUpdate);
+      }
+      this.popperJS._popper.style.zIndex = _popup.PopupManager.nextZIndex();
+      this.popperElm.addEventListener('click', stop);
+    },
+    updatePopper: function updatePopper() {
+      this.popperJS ? this.popperJS.update() : this.createPopper();
+    },
+    doDestroy: function doDestroy() {
+      /* istanbul ignore if */
+      if (this.showPopper || !this.popperJS) return;
+      this.popperJS.destroy();
+      this.popperJS = null;
+    },
+    destroyPopper: function destroyPopper() {
+      if (this.popperJS) {
+        this.resetTransformOrigin();
+      }
+    },
+    resetTransformOrigin: function resetTransformOrigin() {
+      var placementMap = {
+        top: 'bottom',
+        bottom: 'top',
+        left: 'right',
+        right: 'left'
+      };
+      var placement = this.popperJS._popper.getAttribute('x-placement').split('-')[0];
+      var origin = placementMap[placement];
+      this.popperJS._popper.style.transformOrigin = ['top', 'bottom'].indexOf(placement) > -1 ? 'center ' + origin : origin + ' center';
+    },
+    appendArrow: function appendArrow(element) {
+      var hash = void 0;
+      if (this.appended) {
+        return;
+      }
+
+      this.appended = true;
+
+      for (var item in element.attributes) {
+        if (/^_v-/.test(element.attributes[item].name)) {
+          hash = element.attributes[item].name;
+          break;
+        }
+      }
+
+      var arrow = document.createElement('div');
+
+      if (hash) {
+        arrow.setAttribute(hash, '');
+      }
+      arrow.setAttribute('x-arrow', '');
+      arrow.className = 'popper__arrow';
+      element.appendChild(arrow);
+    }
+  },
+
+  beforeDestroy: function beforeDestroy() {
+    this.doDestroy();
+    if (this.popperElm && this.popperElm.parentNode === document.body) {
+      this.popperElm.removeEventListener('click', stop);
+      document.body.removeChild(this.popperElm);
+    }
+  },
+
+
+  // call destroy in keep-alive mode
+  deactivated: function deactivated() {
+    this.$options.beforeDestroy[0].call(this);
+  }
+};