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syuilo
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6 changed files with 121 additions and 85 deletions
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<template>
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<div class="mk-autocomplete">
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<ol class="users" ref="users" v-if="users.length > 0">
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<li v-for="user in users" @click="complete(user)" @keydown="onKeydown" tabindex="-1">
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<img class="avatar" :src="`${user.avatar_url}?thumbnail&size=32`" alt=""/>
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<span class="name">{{ user.name }}</span>
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<span class="username">@{{ user.username }}</span>
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</li>
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</ol>
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</div>
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</template>
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<script lang="ts">
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import Vue from 'vue';
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import contains from '../../../common/scripts/contains';
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export default Vue.extend({
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props: ['q', 'textarea', 'complete', 'close'],
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data() {
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return {
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fetching: true,
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users: [],
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select: -1
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}
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},
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mounted() {
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this.textarea.addEventListener('keydown', this.onKeydown);
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Array.from(document.querySelectorAll('body *')).forEach(el => {
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el.addEventListener('mousedown', this.onMousedown);
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});
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(this as any).api('users/search_by_username', {
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query: this.q,
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limit: 30
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}).then(users => {
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this.users = users;
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this.fetching = false;
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});
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},
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beforeDestroy() {
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this.textarea.removeEventListener('keydown', this.onKeydown);
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Array.from(document.querySelectorAll('body *')).forEach(el => {
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el.removeEventListener('mousedown', this.onMousedown);
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});
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},
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methods: {
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onMousedown(e) {
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if (!contains(this.$el, e.target) && (this.$el != e.target)) this.close();
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},
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onKeydown(e) {
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const cancel = () => {
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e.preventDefault();
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e.stopPropagation();
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};
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switch (e.which) {
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case 10: // [ENTER]
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case 13: // [ENTER]
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if (this.select !== -1) {
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cancel();
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this.complete(this.users[this.select]);
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} else {
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this.close();
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}
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break;
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case 27: // [ESC]
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cancel();
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this.close();
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break;
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case 38: // [↑]
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if (this.select !== -1) {
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cancel();
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this.selectPrev();
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} else {
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this.close();
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}
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break;
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case 9: // [TAB]
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case 40: // [↓]
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cancel();
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this.selectNext();
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break;
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default:
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this.close();
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}
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},
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selectNext() {
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if (++this.select >= this.users.length) this.select = 0;
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this.applySelect();
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},
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selectPrev() {
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if (--this.select < 0) this.select = this.users.length - 1;
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this.applySelect();
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},
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applySelect() {
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const els = (this.$refs.users as Element).children;
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Array.from(els).forEach(el => {
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el.removeAttribute('data-selected');
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});
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els[this.select].setAttribute('data-selected', 'true');
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(els[this.select] as any).focus();
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}
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}
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});
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</script>
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<style lang="stylus" scoped>
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.mk-autocomplete
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position absolute
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z-index 65535
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margin-top calc(1em + 8px)
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overflow hidden
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background #fff
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border solid 1px rgba(0, 0, 0, 0.1)
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border-radius 4px
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> .users
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display block
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margin 0
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padding 4px 0
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max-height 190px
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max-width 500px
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overflow auto
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list-style none
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> li
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display block
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padding 4px 12px
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white-space nowrap
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overflow hidden
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font-size 0.9em
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color rgba(0, 0, 0, 0.8)
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cursor default
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&, *
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user-select none
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&:hover
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&[data-selected='true']
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color #fff
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background $theme-color
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.name
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color #fff
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.username
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color #fff
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&:active
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color #fff
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background darken($theme-color, 10%)
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.name
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color #fff
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.username
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color #fff
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.avatar
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vertical-align middle
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min-width 28px
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min-height 28px
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max-width 28px
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max-height 28px
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margin 0 8px 0 0
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border-radius 100%
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.name
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margin 0 8px 0 0
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/*font-weight bold*/
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font-weight normal
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color rgba(0, 0, 0, 0.8)
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.username
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font-weight normal
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color rgba(0, 0, 0, 0.3)
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</style>
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@ -1,142 +0,0 @@
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import * as getCaretCoordinates from 'textarea-caret';
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import MkAutocomplete from '../components/autocomplete.vue';
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export default {
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bind(el, binding, vn) {
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const self = el._autoCompleteDirective_ = {} as any;
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self.x = new Autocomplete(el);
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self.x.attach();
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},
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unbind(el, binding, vn) {
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const self = el._autoCompleteDirective_;
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self.x.detach();
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}
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};
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/**
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* オートコンプリートを管理するクラス。
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*/
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class Autocomplete {
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private suggestion: any;
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private textarea: any;
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/**
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* 対象のテキストエリアを与えてインスタンスを初期化します。
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*/
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constructor(textarea) {
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// BIND ---------------------------------
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this.onInput = this.onInput.bind(this);
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this.complete = this.complete.bind(this);
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this.close = this.close.bind(this);
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// --------------------------------------
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this.suggestion = null;
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this.textarea = textarea;
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}
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/**
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* このインスタンスにあるテキストエリアの入力のキャプチャを開始します。
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*/
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public attach() {
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this.textarea.addEventListener('input', this.onInput);
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}
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/**
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* このインスタンスにあるテキストエリアの入力のキャプチャを解除します。
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*/
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public detach() {
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this.textarea.removeEventListener('input', this.onInput);
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this.close();
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}
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/**
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* テキスト入力時
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*/
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private onInput() {
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this.close();
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const caret = this.textarea.selectionStart;
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const text = this.textarea.value.substr(0, caret);
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const mentionIndex = text.lastIndexOf('@');
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if (mentionIndex == -1) return;
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const username = text.substr(mentionIndex + 1);
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if (!username.match(/^[a-zA-Z0-9-]+$/)) return;
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this.open('user', username);
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}
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/**
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* サジェストを提示します。
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*/
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private open(type, q) {
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// 既に開いているサジェストは閉じる
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this.close();
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// サジェスト要素作成
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this.suggestion = new MkAutocomplete({
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propsData: {
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textarea: this.textarea,
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complete: this.complete,
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close: this.close,
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type: type,
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q: q
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}
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}).$mount();
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// ~ サジェストを表示すべき位置を計算 ~
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const caretPosition = getCaretCoordinates(this.textarea, this.textarea.selectionStart);
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const rect = this.textarea.getBoundingClientRect();
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const x = rect.left + window.pageXOffset + caretPosition.left;
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const y = rect.top + window.pageYOffset + caretPosition.top;
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this.suggestion.$el.style.left = x + 'px';
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this.suggestion.$el.style.top = y + 'px';
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// 要素追加
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document.body.appendChild(this.suggestion.$el);
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}
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/**
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* サジェストを閉じます。
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*/
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private close() {
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if (this.suggestion == null) return;
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this.suggestion.$destroy();
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this.suggestion = null;
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this.textarea.focus();
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}
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/**
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* オートコンプリートする
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*/
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private complete(user) {
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this.close();
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const value = user.username;
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const caret = this.textarea.selectionStart;
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const source = this.textarea.value;
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const before = source.substr(0, caret);
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const trimmedBefore = before.substring(0, before.lastIndexOf('@'));
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const after = source.substr(caret);
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// 結果を挿入する
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this.textarea.value = trimmedBefore + '@' + value + ' ' + after;
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// キャレットを戻す
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this.textarea.focus();
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const pos = caret + value.length;
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this.textarea.setSelectionRange(pos, pos);
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}
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}
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@ -1,8 +1,6 @@
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import Vue from 'vue';
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import userPreview from './user-preview';
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import autocomplete from './autocomplete';
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Vue.directive('userPreview', userPreview);
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Vue.directive('user-preview', userPreview);
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Vue.directive('autocomplete', autocomplete);
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