1 files changed, 118 insertions, 0 deletions
diff --git a/node_modules/vue/src/platforms/web/runtime/modules/attrs.js b/node_modules/vue/src/platforms/web/runtime/modules/attrs.js
new file mode 100644
index 00000000..78ef28a1
--- /dev/null
+++ b/node_modules/vue/src/platforms/web/runtime/modules/attrs.js
@@ -0,0 +1,118 @@
+/* @flow */
+
+import { isIE, isIE9, isEdge } from 'core/util/env'
+
+import {
+  extend,
+  isDef,
+  isUndef
+} from 'shared/util'
+
+import {
+  isXlink,
+  xlinkNS,
+  getXlinkProp,
+  isBooleanAttr,
+  isEnumeratedAttr,
+  isFalsyAttrValue
+} from 'web/util/index'
+
+function updateAttrs (oldVnode: VNodeWithData, vnode: VNodeWithData) {
+  const opts = vnode.componentOptions
+  if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
+    return
+  }
+  if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
+    return
+  }
+  let key, cur, old
+  const elm = vnode.elm
+  const oldAttrs = oldVnode.data.attrs || {}
+  let attrs: any = vnode.data.attrs || {}
+  // clone observed objects, as the user probably wants to mutate it
+  if (isDef(attrs.__ob__)) {
+    attrs = vnode.data.attrs = extend({}, attrs)
+  }
+
+  for (key in attrs) {
+    cur = attrs[key]
+    old = oldAttrs[key]
+    if (old !== cur) {
+      setAttr(elm, key, cur)
+    }
+  }
+  // #4391: in IE9, setting type can reset value for input[type=radio]
+  // #6666: IE/Edge forces progress value down to 1 before setting a max
+  /* istanbul ignore if */
+  if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
+    setAttr(elm, 'value', attrs.value)
+  }
+  for (key in oldAttrs) {
+    if (isUndef(attrs[key])) {
+      if (isXlink(key)) {
+        elm.removeAttributeNS(xlinkNS, getXlinkProp(key))
+      } else if (!isEnumeratedAttr(key)) {
+        elm.removeAttribute(key)
+      }
+    }
+  }
+}
+
+function setAttr (el: Element, key: string, value: any) {
+  if (el.tagName.indexOf('-') > -1) {
+    baseSetAttr(el, key, value)
+  } else if (isBooleanAttr(key)) {
+    // set attribute for blank value
+    // e.g. <option disabled>Select one</option>
+    if (isFalsyAttrValue(value)) {
+      el.removeAttribute(key)
+    } else {
+      // technically allowfullscreen is a boolean attribute for <iframe>,
+      // but Flash expects a value of "true" when used on <embed> tag
+      value = key === 'allowfullscreen' && el.tagName === 'EMBED'
+        ? 'true'
+        : key
+      el.setAttribute(key, value)
+    }
+  } else if (isEnumeratedAttr(key)) {
+    el.setAttribute(key, isFalsyAttrValue(value) || value === 'false' ? 'false' : 'true')
+  } else if (isXlink(key)) {
+    if (isFalsyAttrValue(value)) {
+      el.removeAttributeNS(xlinkNS, getXlinkProp(key))
+    } else {
+      el.setAttributeNS(xlinkNS, key, value)
+    }
+  } else {
+    baseSetAttr(el, key, value)
+  }
+}
+
+function baseSetAttr (el, key, value) {
+  if (isFalsyAttrValue(value)) {
+    el.removeAttribute(key)
+  } else {
+    // #7138: IE10 & 11 fires input event when setting placeholder on
+    // <textarea>... block the first input event and remove the blocker
+    // immediately.
+    /* istanbul ignore if */
+    if (
+      isIE && !isIE9 &&
+      el.tagName === 'TEXTAREA' &&
+      key === 'placeholder' && !el.__ieph
+    ) {
+      const blocker = e => {
+        e.stopImmediatePropagation()
+        el.removeEventListener('input', blocker)
+      }
+      el.addEventListener('input', blocker)
+      // $flow-disable-line
+      el.__ieph = true /* IE placeholder patched */
+    }
+    el.setAttribute(key, value)
+  }
+}
+
+export default {
+  create: updateAttrs,
+  update: updateAttrs
+}