chenhaodong / mew-iview

  <template>

      <div :class="wrapClasses">

          <template v-if="type !== 'textarea'">
              <div :class="[prefixCls + '-group-prepend']" v-if="prepend" v-el:prepend><slot name="prepend"></slot></div>
              <i class="ivu-icon" :class="['ivu-icon-' + icon, prefixCls + '-icon']" v-if="icon" @click="handleIconClick"></i>
              <input

                  :type="type"

                  :class="inputClasses"
                  :placeholder="placeholder"
                  :disabled="disabled"
                  :maxlength="maxlength"

                  :readonly="readonly"

                  v-model="value"

                  @keyup.enter="handleEnter"
                  @focus="handleFocus"
                  @blur="handleBlur">

              <div :class="[prefixCls + '-group-append']" v-if="append" v-el:append><slot name="append"></slot></div>
          </template>
          <textarea
              v-else
              v-el:textarea
              :class="textareaClasses"
              :style="textareaStyles"

              :placeholder="placeholder"

              :disabled="disabled"
              :rows="rows"
              :maxlength="maxlength"

              :readonly="readonly"

              v-model="value"

              @keyup.enter="handleEnter"
              @focus="handleFocus"
              @blur="handleBlur">

          </textarea>

      </div>

  </template>
  <script>
      import { oneOf } from '../../utils/assist';

      import calcTextareaHeight from '../../utils/calcTextareaHeight';

  
      const prefixCls = 'ivu-input';
  
      export default {
          props: {
              type: {

                  validator (value) {

                      return oneOf(value, ['text', 'textarea', 'password']);

                  },

                  default: 'text'
              },
              value: {
                  type: [String, Number],
                  default: '',
                  twoWay: true
              },

              size: {
                  validator (value) {
                      return oneOf(value, ['small', 'large']);
                  }

              },
              placeholder: {
                  type: String,
                  default: ''
              },
              maxlength: {
                  type: Number
              },
              disabled: {
                  type: Boolean,
                  default: false
              },
              icon: String,
              autosize: {
                  type: [Boolean, Object],
                  default: false
              },
              rows: {
                  type: Number,
                  default: 2

              },
              readonly: {
                  type: Boolean,
                  default: false

              }
          },
          data () {
              return {

                  prefixCls: prefixCls,
                  prepend: true,
                  append: true,
                  textareaStyles: {}

              }        
          },
          computed: {

              wrapClasses () {

                  return [
                      `${prefixCls}-wrapper`,
                      {

                          [`${prefixCls}-wrapper-${this.size}`]: !!this.size,

                          [`${prefixCls}-type`]: this.type,
                          [`${prefixCls}-group`]: this.prepend || this.append,
                          [`${prefixCls}-group-${this.size}`]: (this.prepend || this.append) && !!this.size
                      }
                  ]
              },
              inputClasses () {
                  return [
                      `${prefixCls}`,
                      {
                          [`${prefixCls}-${this.size}`]: !!this.size,
                          [`${prefixCls}-disabled`]: this.disabled
                      }
                  ]

              },

              textareaClasses () {

                  return [
                      `${prefixCls}`,
                      {

                          [`${prefixCls}-disabled`]: this.disabled

                      }
                  ]
              }

          },
          methods: {
              handleEnter () {
                  this.$emit('on-enter');
              },
              handleIconClick () {
                  this.$emit('on-click');
              },

              handleFocus () {
                  this.$emit('on-focus');
              },
              handleBlur () {
                  this.$emit('on-blur');
              },

              resizeTextarea () {
                  const autosize = this.autosize;
                  if (!autosize || this.type !== 'textarea') {
                      return false;
                  }
  
                  const minRows = autosize.minRows;
                  const maxRows = autosize.maxRows;
  
                  this.textareaStyles = calcTextareaHeight(this.$els.textarea, minRows, maxRows);
              }
          },
          watch: {
              value (val) {
                  this.$nextTick(() => {
                      this.resizeTextarea();
                  });
                  this.$emit('on-change', val);
              }
          },
          ready () {
              if (this.type === 'text') {
                  this.prepend = this.$els.prepend.innerHTML !== '';
                  this.append = this.$els.append.innerHTML !== '';
              } else {
                  this.prepend = false;
                  this.append = false;
              }
              this.resizeTextarea();

          }
      }
  </script>