1 files changed, 147 insertions, 0 deletions
diff --git a/node_modules/vue/src/platforms/web/runtime/directives/model.js b/node_modules/vue/src/platforms/web/runtime/directives/model.js
new file mode 100644
index 00000000..cba8ded0
--- /dev/null
+++ b/node_modules/vue/src/platforms/web/runtime/directives/model.js
@@ -0,0 +1,147 @@
+/**
+ * Not type checking this file because flow doesn't like attaching
+ * properties to Elements.
+ */
+
+import { isTextInputType } from 'web/util/element'
+import { looseEqual, looseIndexOf } from 'shared/util'
+import { mergeVNodeHook } from 'core/vdom/helpers/index'
+import { warn, isIE9, isIE, isEdge } from 'core/util/index'
+
+/* istanbul ignore if */
+if (isIE9) {
+  // http://www.matts411.com/post/internet-explorer-9-oninput/
+  document.addEventListener('selectionchange', () => {
+    const el = document.activeElement
+    if (el && el.vmodel) {
+      trigger(el, 'input')
+    }
+  })
+}
+
+const directive = {
+  inserted (el, binding, vnode, oldVnode) {
+    if (vnode.tag === 'select') {
+      // #6903
+      if (oldVnode.elm && !oldVnode.elm._vOptions) {
+        mergeVNodeHook(vnode, 'postpatch', () => {
+          directive.componentUpdated(el, binding, vnode)
+        })
+      } else {
+        setSelected(el, binding, vnode.context)
+      }
+      el._vOptions = [].map.call(el.options, getValue)
+    } else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {
+      el._vModifiers = binding.modifiers
+      if (!binding.modifiers.lazy) {
+        el.addEventListener('compositionstart', onCompositionStart)
+        el.addEventListener('compositionend', onCompositionEnd)
+        // Safari < 10.2 & UIWebView doesn't fire compositionend when
+        // switching focus before confirming composition choice
+        // this also fixes the issue where some browsers e.g. iOS Chrome
+        // fires "change" instead of "input" on autocomplete.
+        el.addEventListener('change', onCompositionEnd)
+        /* istanbul ignore if */
+        if (isIE9) {
+          el.vmodel = true
+        }
+      }
+    }
+  },
+
+  componentUpdated (el, binding, vnode) {
+    if (vnode.tag === 'select') {
+      setSelected(el, binding, vnode.context)
+      // in case the options rendered by v-for have changed,
+      // it's possible that the value is out-of-sync with the rendered options.
+      // detect such cases and filter out values that no longer has a matching
+      // option in the DOM.
+      const prevOptions = el._vOptions
+      const curOptions = el._vOptions = [].map.call(el.options, getValue)
+      if (curOptions.some((o, i) => !looseEqual(o, prevOptions[i]))) {
+        // trigger change event if
+        // no matching option found for at least one value
+        const needReset = el.multiple
+          ? binding.value.some(v => hasNoMatchingOption(v, curOptions))
+          : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions)
+        if (needReset) {
+          trigger(el, 'change')
+        }
+      }
+    }
+  }
+}
+
+function setSelected (el, binding, vm) {
+  actuallySetSelected(el, binding, vm)
+  /* istanbul ignore if */
+  if (isIE || isEdge) {
+    setTimeout(() => {
+      actuallySetSelected(el, binding, vm)
+    }, 0)
+  }
+}
+
+function actuallySetSelected (el, binding, vm) {
+  const value = binding.value
+  const isMultiple = el.multiple
+  if (isMultiple && !Array.isArray(value)) {
+    process.env.NODE_ENV !== 'production' && warn(
+      `<select multiple v-model="${binding.expression}"> ` +
+      `expects an Array value for its binding, but got ${
+        Object.prototype.toString.call(value).slice(8, -1)
+      }`,
+      vm
+    )
+    return
+  }
+  let selected, option
+  for (let i = 0, l = el.options.length; i < l; i++) {
+    option = el.options[i]
+    if (isMultiple) {
+      selected = looseIndexOf(value, getValue(option)) > -1
+      if (option.selected !== selected) {
+        option.selected = selected
+      }
+    } else {
+      if (looseEqual(getValue(option), value)) {
+        if (el.selectedIndex !== i) {
+          el.selectedIndex = i
+        }
+        return
+      }
+    }
+  }
+  if (!isMultiple) {
+    el.selectedIndex = -1
+  }
+}
+
+function hasNoMatchingOption (value, options) {
+  return options.every(o => !looseEqual(o, value))
+}
+
+function getValue (option) {
+  return '_value' in option
+    ? option._value
+    : option.value
+}
+
+function onCompositionStart (e) {
+  e.target.composing = true
+}
+
+function onCompositionEnd (e) {
+  // prevent triggering an input event for no reason
+  if (!e.target.composing) return
+  e.target.composing = false
+  trigger(e.target, 'input')
+}
+
+function trigger (el, type) {
+  const e = document.createEvent('HTMLEvents')
+  e.initEvent(type, true, true)
+  el.dispatchEvent(e)
+}
+
+export default directive