<template>

    <div class="keyboard">
     <div class="keyboard_key">
        <div class="keyboard_character" @click="_chraClick">
            <button type="button" class="pad-num1 specialkey" data-num='!'>!</button>
            <button type="button
 
" class="pad-num1 specialkey" data-num='@'>@</button>
            <button type="button" class="pad-num1 specialkey" data-num='#'>#</button>
            <button type="button" class="pad-num1 specialkey" data-num='$'>$</button>
            <button type="button" class="
 
pad-num1 specialkey" data-num='%'>%</button>
            <button type="button" class="pad-num1 specialkey" data-num='^'>^</button>
            <button type="button" class="pad-num1 specialkey" data-num='&'>&</button>
            <button type="button" class="pad-num1 specialkey
 
" data-num='*'>*</button>
            <button type="button" class="pad-num1 specialkey" data-num='('>(</button>
            <button type="button" class="pad-num1 specialkey" data-num=')'>)</button>
            <button type="button" class="pad-num1 specialkey" data-num='{'>{</button>
            <button type="button" class="pad-num1 specialkey" data-num='}'>}</button>
            <button type="button" class="pad-num1 specialkey" data-num=':'>:</button>
            <button type="button" class="pad-num1 specialkey" data-num='"'>"</button>
            <button type="button" class="pad-num1 specialkey" data-num=','>,</button>
            <button type="button" class="pad-num1 specialkey" data-num='/'>/</button>
        </div>
         
       <div class="centerdiv"></div>

        <div class="keyboard_Letter">
         <div class="group1">
            <button v-for="(item,index) in keylist" :key="index" type="button" class="pad-num1" @click="upClick1(item)">{{item}}</button>
         </div>

         <div class="group2">
            <button v-for="(item,index) in keylist2" :key="index" type="button" class="pad-num1" @click="upClick2(item)">{{item}}</button>
         </div>

         <div class="group3">
           <button v-for="(item,index) in keylist3" :key="index" type="button" class="pad-num1" @click="upClick3(item)" >{{item}}</button>
         </div> 
         <div class="group4" @click="_letterClick">
            <button type="button" class="pad-num1 specialkey" data-num='delete'>delete</button>
            <button type="button" class="pad-num2 specialkey" data-num='space'>space</button>
            <button type="button" class="pad-num1 specialkey" data-num='enter'>
              <i class="fa fa-mail-reply" data-num='enter'></i>
              </button>
         </div>
       
        </div>

      <div class="centerdiv"></div>

        <div class="keyboard_number" @click="_handleKeyPress">
          <div class="pos-right-pad-num">
            <button type="button" class="pad-num specialkey" data-num='7'>7</button>
            <button type="button" class="pad-num specialkey" data-num='8'>8</button>
            <button type="button" class="pad-num specialkey" data-num='9'>9</button>
            <button type="button" class="pad-num specialkey" data-num='4'>4</button>
            <button type="button" class="pad-num specialkey" data-num='5'>5</button>
            <button type="button" class="pad-num specialkey" data-num='6'>6</button>
            <button type="button" class="pad-num specialkey" data-num='1'>1</button>
            <button type="button" class="pad-num specialkey" data-num='2'>2</button>
            <button type="button" class="pad-num specialkey" data-num='3'>3</button>
            <button type="button" class="pad-num specialkey" data-num='0'>0</button>
            <button type="button" class="pad-num specialkey" data-num='.'>.</button>
            <button type="button" class="pad-num specialkey" data-num='D'>X</button>
          </div>
          <div class="pos-right-pad-act">
            <button type="button" class="pad-num specialkey border-right" style="width:100%" data-num='+'>+</button>
            <button type="button" class="pad-num specialkey border-right" style="width:100%" data-num='-'>-<br></button>
            <button type="button" class="pad-num2 specialkey border-right" data-num='enter'><i class="fa fa-mail-reply" aria-hidden="true"></i></button>
          </div>
        </div>
     </div>
    </div>
</template>

<script>
export default {
  data() {
    return {
      keyValue: "",
      keylist: [],
      keylist2: [],
      keylist3: [],
      bigkeys1:[],
      bigkeys2:[],
      bigkeys3:[],
      smallkeys1:[],
      smallkeys2:[],
      smallkeys3:[],
      selected:false,
    };
  },
  created() {
    this.readle();
  },
  methods: {
    readle() {
      let smallkey1 = ["q", "w", "e", "r", "t", "y", "u", "i", "o", "p"];
      let bigkey1 = ["Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P"];
      let smallkey2 = ["a", "s", "d", "f", "g", "h", "j", "k", "l"];
      let bigkey2 = ["A", "S", "D", "F", "G", "H", "J", "K", "L"];
      let smallkey3 = ["shift","z", "x", "c", "v", "b", "n", "m", "<", ">"];
      let bigkey3 = ["SHIFT", "Z", "X", "C", "V", "B", "N", "M", "<", ">"];
      this.keylist = smallkey1;
      this.keylist2 = smallkey2;
      this.keylist3 = smallkey3;
      this.bigkeys1=bigkey1;
      this.bigkeys2=bigkey2;
      this.bigkeys3=bigkey3;
      this.smallkeys1=smallkey1;
      this.smallkeys2=smallkey2;
      this.smallkeys3=smallkey3;
    },
    _chraClick(e) {
      let num = e.target.dataset.num;
      this.keyValue += num;
      this.$emit("updatekey",this.keyValue);
    },
    _handleKeyPress(e) {
      let num = e.target.dataset.num;
      switch (String(num)) {
        case "D":
          this.deletekey();
          break;
        case "enter":
          this.keyValue+="\n";
          break;
        default:
          this.Addnum(num);
          break;
      }
      this.$emit("updatekey",this.keyValue)
    },
    deletekey() {
      let values = this.keyValue;
      if (!values.length) {
        return false;
      } else {
        this.keyValue = values.substring(0, values.length - 1);
          this.$emit("updatekey",this.keyValue)
      }
    },
    Addnum(num) {
      let value = this.keyValue;
      this.keyValue = value + num;
    },
    upClick1(key){
      this.keyValue+=key;
        this.$emit("updatekey",this.keyValue)
    },
    upClick2(key){
      this.keyValue+=key;
        this.$emit("updatekey",this.keyValue)
    },
    upClick3(key){
      switch(String(key))
      {
        case "shift":
        this.keylist=this.bigkeys1;
        this.keylist2=this.bigkeys2;
        this.keylist3=this.bigkeys3;
        break;
        case "SHIFT":
       this.keylist = this.smallkeys1;
       this.keylist2 = this.smallkeys2;
       this.keylist3 = this.smallkeys3;
       break;
       default:
       this.keyValue+=key;
       break;
      }
        this.$emit("updatekey",this.keyValue)
    },
    _letterClick(e){
        let num = e.target.dataset.num;
        switch(String(num))
        {
          case "delete":
          this.deletekey();
          break;
          case "space":
          this.keyValue +=" ";
          break;
          case "enter":
          this.keyValue +="\n";
          break;
        }
    },
  }
};
</script>
<style lang="less" scoped>
.keyboard {
  width: 100%;
  height: 215px;
  background: #000;
  opacity: 0.7;
  overflow: hidden;

}

.keyboard_key {
  padding-top: 10px;
  width: 95%;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}
button {
  background-color: aliceblue;
}
// ----數字鍵盤-----
.keyboard_number {
  display: flex;
  width: 20%;
  margin: 0;
  padding: 0;
  vertical-align: bottom;
  flex-direction: row;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: center;
}
.pos-right-pad-num {
  display: flex;
  width: 75%;
  flex-direction: row;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: center;
}
.pos-right-pad-act {
  width: 25%;
}
.pad-num {
  margin: 0 !important;
  width: 33.3333333%;
  height: 48px;
  border: 0;
  border: 1px solid #000000;
  font-size: 15px;
  cursor: pointer;
  &:hover {
    position: relative;
    cursor: pointer;
  }
  &:active {
    top: 1px;
    left: 1px;
    background-color: #201a1a;
  }
}
.pad-num2 {
  margin: 0 !important;
  width: 100%;
  height: 96px;
  border: 0;
  border: 1px solid #000000;
  font-size: 15px;
  cursor: pointer;
  &:hover {
    position: relative;
    cursor: pointer;
  }
  &:active {
    top: 1px;
    left: 1px;
    background-color: #201a1a;
  }
}

// 字元鍵盤
.keyboard_character {
  width: 20%;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: center;
  margin-left: 5%;
  .pad-num1 {
    width: 25%;
    height: 48px;
    border: 1px solid #000000;
    font-size: 15px;
    cursor: pointer;
    &:hover {
      position: relative;
      cursor: pointer;
    }
    &:active {
      top: 1px;
      left: 1px;
      background-color: #201a1a;
    }
  }
}

//字母鍵盤
.keyboard_Letter {
  width: 40%;
  margin: 0;
  padding: 0;
  .group1 {
    display: flex;
    flex-direction: row;
    .pad-num1 {
      width: 10%;
      height: 48px;
      border: 1px solid #000000;
      font-size: 15px;
      cursor: pointer;
      &:hover {
        position: relative;
        cursor: pointer;
      }
      &:active {
        top: 1px;
        left: 1px;
        background-color: #201a1a;
      }
    }
  }
  .group2 {
    display: flex;
    flex-direction: row;
    width: 100%;
    margin-left: 26px;
    .pad-num1 {
      width: 10%;
      height: 48px;
      border: 1px solid #000000;
      font-size: 15px;
      cursor: pointer;
      &:hover {
        position: relative;
        cursor: pointer;
      }
      &:active {
        top: 1px;
        left: 1px;
        background-color: #201a1a;
      }
    }
  }

  .group3 {
    display: flex;
    flex-direction: row;
    .pad-num1 {
      width: 10%;
      height: 48px;
      border: 1px solid #000000;
      font-size: 14px;
      cursor: pointer;
      &:hover {
        position: relative;
        cursor: pointer;
      }
      &:active {
        top: 1px;
        left: 1px;
        background-color: #201a1a;
      }
    }
  }
  .group4 {
    display: flex;
    flex-direction: row;
    .pad-num1 {
      width: 15%;
      height: 48px;
      font-size: 14px;
      cursor: pointer;
      &:hover {
        position: relative;
        cursor: pointer;
      }
      &:active {
        top: 1px;
        left: 1px;
        background-color: #201a1a;
      }
    }
    .pad-num2 {
      width: 70%;
      height: 48px;
      border: 1px solid #000000;
      font-size: 14px;
      cursor: pointer;
      &:hover {
        position: relative;
        cursor: pointer;
      }
      &:active {
        top: 1px;
        left: 1px;
        background-color: #201a1a;
      }
    }
  }
}
.centerdiv {
  border-right: 2px solid rgb(243, 239, 239);
  padding-bottom: 1800px; /*關鍵*/
  margin-bottom: -1800px; /*關鍵*/
  padding-top: 1800px; /*關鍵*/
  margin-top: -1800px; /*關鍵*/
}
.input-box {
  font-size: 35px;
  font-weight: bold;
  height: 40px;
  border-bottom: 1px solid #aaa;
  padding: 10px 15px;
  text-align: right;
  width: 90%;
}
</style>

<template>
    <div>
        <el-button @click="handShow" type="primary">鍵盤</el-button>
        <textarea type="text" v-model="keyboards"></textarea>
        <transition name="fade">
        <keyboard refs="key" v-show="ifshow" class="key"  v-on:updatekey="GetKeyVal"></keyboard>
        </transition>
    </div>
</template>

<script>
import Keyboard from "./keyBoard";

export default {
  data() {
    return {
      keyboards: "",
      ifshow: false
    };
  },
  components: {
    Keyboard
  },
  methods: {
    GetKeyVal(val) {
      this.keyboards = val;
    },
    handShow() {
      this.ifshow = !this.ifshow;
    }
  }
};
</script>

<style lang="less" scoped>
#app {
  width: 680px;
  margin: 20px auto;
  font-family: Verdana, Sans-Serif;

  h1 {
    color: #42b983;
    font-weight: bold;
  }

  textarea {
    display: block;
    width: 100%;
    min-height: 100px;
    padding: 0;
    margin: 20px 0;
    font-size: 16px;
  }
  .key {
    position: fixed;
    left: 0px;
    bottom: 0px;
    width: 100%;
    z-index: 999;
  }
  .fade-enter-active,
  .fade-leave-active {
    transition: all 0.3s ease;
  }
  .fade-enter,
  .fade-leave-to {
    transform: translateY(220px);
    opacity: 0;
  }
}
</style>