<template>
    <div class="ckeditor">
        <textarea
                :name="name"
                :id="id"
                :value="value"
                :types="types"
                :config="config">
        </textarea>
    </div>
</template>

<script>
    // Source: https://github.com/dangvanthanh/vue-ckeditor2
    let inc = 0
    export default {
        name: 'vue-ckeditor',
        props: {
            name: {
                type: String,
                default: () => `editor-${++inc}`
            },
            value: {
                type: String
            },
            id: {
                type: String,
                default: () => `editor-${inc}`
            },
            types: {
                type: String,
                default: () => `classic`
            },
            config: {
                type: Object,
                default: () => {}
            }
        },
        data () {
            return { destroyed: false }
        },
        computed: {
            instance () {
                return CKEDITOR.instances[this.id]
            }
        },
        watch: {
            value (val) {
                let html = this.instance.getData();
                if (val !== html) {
                    this.instance.setData(val);
                }
            }
        },
        mounted () {
            if (typeof CKEDITOR === 'undefined') {
                console.log('CKEDITOR is missing (http://ckeditor.com/)')
            } else {
                if (this.types === 'inline') {
                    CKEDITOR.inline(this.id, this.config)
                } else {
                    CKEDITOR.replace(this.id, this.config)
                }
                this.instance.on('change', () => {
                    let html = this.instance.getData()
                    if (html !== this.value) {
                        this.$emit('input', html)
                        this.$emit('update:value', html)
                    }
                })
                this.instance.on('blur', () => {
                    this.$emit('blur', this.instance)
                })
                this.instance.on('focus', () => {
                    this.$emit('focus', this.instance)
                })
            }
        },
        beforeDestroy () {
            if (!this.destroyed) {
                this.instance.focusManager.blur(true)
                this.instance.removeAllListeners()
                try {
                    this.instance.destroy()
                } catch (e) { }
                this.destroyed = true
            }
        }
    }
</script>
<style>
    .ckeditor::after {
        content: "";
        display: table;
        clear: both;
    }
</style>
