1 files changed, 95 insertions, 0 deletions
diff --git a/node_modules/vue/src/platforms/web/runtime/modules/dom-props.js b/node_modules/vue/src/platforms/web/runtime/modules/dom-props.js
new file mode 100644
index 00000000..f3888aed
--- /dev/null
+++ b/node_modules/vue/src/platforms/web/runtime/modules/dom-props.js
@@ -0,0 +1,95 @@
+/* @flow */
+
+import { isDef, isUndef, extend, toNumber } from 'shared/util'
+
+function updateDOMProps (oldVnode: VNodeWithData, vnode: VNodeWithData) {
+  if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
+    return
+  }
+  let key, cur
+  const elm: any = vnode.elm
+  const oldProps = oldVnode.data.domProps || {}
+  let props = vnode.data.domProps || {}
+  // clone observed objects, as the user probably wants to mutate it
+  if (isDef(props.__ob__)) {
+    props = vnode.data.domProps = extend({}, props)
+  }
+
+  for (key in oldProps) {
+    if (isUndef(props[key])) {
+      elm[key] = ''
+    }
+  }
+  for (key in props) {
+    cur = props[key]
+    // ignore children if the node has textContent or innerHTML,
+    // as these will throw away existing DOM nodes and cause removal errors
+    // on subsequent patches (#3360)
+    if (key === 'textContent' || key === 'innerHTML') {
+      if (vnode.children) vnode.children.length = 0
+      if (cur === oldProps[key]) continue
+      // #6601 work around Chrome version <= 55 bug where single textNode
+      // replaced by innerHTML/textContent retains its parentNode property
+      if (elm.childNodes.length === 1) {
+        elm.removeChild(elm.childNodes[0])
+      }
+    }
+
+    if (key === 'value') {
+      // store value as _value as well since
+      // non-string values will be stringified
+      elm._value = cur
+      // avoid resetting cursor position when value is the same
+      const strCur = isUndef(cur) ? '' : String(cur)
+      if (shouldUpdateValue(elm, strCur)) {
+        elm.value = strCur
+      }
+    } else {
+      elm[key] = cur
+    }
+  }
+}
+
+// check platforms/web/util/attrs.js acceptValue
+type acceptValueElm = HTMLInputElement | HTMLSelectElement | HTMLOptionElement;
+
+function shouldUpdateValue (elm: acceptValueElm, checkVal: string): boolean {
+  return (!elm.composing && (
+    elm.tagName === 'OPTION' ||
+    isNotInFocusAndDirty(elm, checkVal) ||
+    isDirtyWithModifiers(elm, checkVal)
+  ))
+}
+
+function isNotInFocusAndDirty (elm: acceptValueElm, checkVal: string): boolean {
+  // return true when textbox (.number and .trim) loses focus and its value is
+  // not equal to the updated value
+  let notInFocus = true
+  // #6157
+  // work around IE bug when accessing document.activeElement in an iframe
+  try { notInFocus = document.activeElement !== elm } catch (e) {}
+  return notInFocus && elm.value !== checkVal
+}
+
+function isDirtyWithModifiers (elm: any, newVal: string): boolean {
+  const value = elm.value
+  const modifiers = elm._vModifiers // injected by v-model runtime
+  if (isDef(modifiers)) {
+    if (modifiers.lazy) {
+      // inputs with lazy should only be updated when not in focus
+      return false
+    }
+    if (modifiers.number) {
+      return toNumber(value) !== toNumber(newVal)
+    }
+    if (modifiers.trim) {
+      return value.trim() !== newVal.trim()
+    }
+  }
+  return value !== newVal
+}
+
+export default {
+  create: updateDOMProps,
+  update: updateDOMProps
+}