index.tsx
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import {
defineComponent,
nextTick,
onMounted,
reactive,
computed,
ref,
unref,
onUnmounted,
} from 'vue';
import { props } from './props';
import Icon from '/@/components/Icon';
import type { ContextMenuItem } from './types';
import './index.less';
const prefixCls = 'context-menu';
export default defineComponent({
name: 'ContextMenu',
props,
setup(props) {
const wrapRef = ref<Nullable<HTMLDivElement>>(null);
const state = reactive({
show: false,
});
onMounted(() => {
nextTick(() => {
state.show = true;
});
});
onUnmounted(() => {
const el = unref(wrapRef);
el && document.body.removeChild(el);
});
const getStyle = computed(() => {
const { axis, items, styles, width } = props;
const { x, y } = axis || { x: 0, y: 0 };
const menuHeight = (items || []).length * 40;
const menuWidth = width;
const body = document.body;
return {
...(styles as any),
width: `${width}px`,
left: (body.clientWidth < x + menuWidth ? x - menuWidth : x) + 'px',
top: (body.clientHeight < y + menuHeight ? y - menuHeight : y) + 'px',
};
});
function handleAction(item: ContextMenuItem, e: MouseEvent) {
const { handler, disabled } = item;
if (disabled) {
return;
}
state.show = false;
if (e) {
e.stopPropagation();
e.preventDefault();
}
handler && handler();
}
function renderContent(item: ContextMenuItem) {
const { icon, label } = item;
const { showIcon } = props;
return (
<span style="display: inline-block; width: 100%;">
{showIcon && icon && <Icon class="mr-2" icon={icon} />}
<span>{label}</span>
</span>
);
}
function renderMenuItem(items: ContextMenuItem[]) {
return items.map((item) => {
const { disabled, label } = item;
return (
<li class={`${prefixCls}__item ${disabled ? 'disabled' : ''}`} key={label}>
<a onClick={handleAction.bind(null, item)} style="color:#333;">
{renderContent(item)}
</a>
</li>
);
});
}
return () => {
const { items } = props;
return (
<ul class={[prefixCls, !state.show && 'hidden']} ref={wrapRef} style={unref(getStyle)}>
{renderMenuItem(items)}
</ul>
);
};
},
});