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<template>
    <div id="area">
        <a-form-item>
            <a-textarea ref="targetArea" :rows="4" v-model="visitorContent" :placeholder="this.$attrs.replyHolder"
                class="OwO-textarea" />
        </a-form-item>
        <MyOwO @insertOwO="insertOwO"></MyOwO>
    </div>
</template>
 
<script>
    import MyOwO from './MyOwO.vue'
 
    export default {
        components: {
            MyOwO
        },
        props: {
            content: String
        },
        data() {
            return {
                visitorContent: '',
            }
        },
        watch: {
            visitorContent: function(newValue, oldValue) {
                this.$emit("update:content", newValue)
            },
        },
        methods: {
            insertOwO(text) {
                console.log(text);
                this.insertInputTxt(text)
            },
            insertInputTxt(insertTxt) {
                var elInput = this.$refs.targetArea.$el
                var startPos = elInput.selectionStart
                var endPos = elInput.selectionEnd
                if (startPos === undefined || endPos === undefined) return
                var txt = elInput.value
                var result = txt.substring(0, startPos) + insertTxt + txt.substring(endPos)
                elInput.value = result
                this.visitorContent = result
                elInput.focus()
                elInput.selectionStart = startPos + insertTxt.length
                elInput.selectionEnd = startPos + insertTxt.length
 
                this.$emit("update:content", this.visitorContent)
            }
        }
    }
</script>
 
<style>
 
</style>