创建组合框插件
安装
pnpm add @platejs/comboboxpnpm add @platejs/combobox创建输入插件
首先创建一个输入插件,当触发器激活时将被插入:
import { createSlatePlugin } from 'platejs';
const TagInputPlugin = createSlatePlugin({
key: 'tag_input',
editOnly: true,
node: {
isElement: true,
isInline: true,
isVoid: true,
},
});import { createSlatePlugin } from 'platejs';
const TagInputPlugin = createSlatePlugin({
key: 'tag_input',
editOnly: true,
node: {
isElement: true,
isInline: true,
isVoid: true,
},
});创建主插件
使用withTriggerCombobox创建主插件:
import { createTSlatePlugin, type PluginConfig } from 'platejs';
import {
type TriggerComboboxPluginOptions,
withTriggerCombobox
} from '@platejs/combobox';
type TagConfig = PluginConfig<'tag', TriggerComboboxPluginOptions>;
export const TagPlugin = createTSlatePlugin<TagConfig>({
key: 'tag',
node: { isElement: true, isInline: true, isVoid: true },
options: {
trigger: '#',
triggerPreviousCharPattern: /^\s?$/,
createComboboxInput: () => ({
children: [{ text: '' }],
type: 'tag_input',
}),
},
plugins: [TagInputPlugin],
}).overrideEditor(withTriggerCombobox);import { createTSlatePlugin, type PluginConfig } from 'platejs';
import {
type TriggerComboboxPluginOptions,
withTriggerCombobox
} from '@platejs/combobox';
type TagConfig = PluginConfig<'tag', TriggerComboboxPluginOptions>;
export const TagPlugin = createTSlatePlugin<TagConfig>({
key: 'tag',
node: { isElement: true, isInline: true, isVoid: true },
options: {
trigger: '#',
triggerPreviousCharPattern: /^\s?$/,
createComboboxInput: () => ({
children: [{ text: '' }],
type: 'tag_input',
}),
},
plugins: [TagInputPlugin],
}).overrideEditor(withTriggerCombobox);node.isElement: 定义此为元素节点(非文本)node.isInline: 使标签元素内联(非块级)node.isVoid: 防止在标签元素内编辑options.trigger: 触发组合框的字符(本例为#)options.triggerPreviousCharPattern: 必须匹配触发器前字符的正则表达式。/^\s?$/允许在行首或空白后触发options.createComboboxInput: 触发器激活时创建输入元素节点的函数
创建组件
使用InlineCombobox创建输入元素组件:
import { PlateElement, useFocused, useReadOnly, useSelected } from 'platejs/react';
import {
InlineCombobox,
InlineComboboxContent,
InlineComboboxEmpty,
InlineComboboxInput,
InlineComboboxItem,
} from '@/components/ui/inline-combobox';
import { cn } from '@/lib/utils';
const tags = [
{ id: 'frontend', name: '前端', color: 'blue' },
{ id: 'backend', name: '后端', color: 'green' },
{ id: 'design', name: '设计', color: 'purple' },
{ id: 'urgent', name: '紧急', color: 'red' },
];
export function TagInputElement({ element, ...props }) {
return (
<PlateElement as="span" {...props}>
<InlineCombobox element={element} trigger="#">
<InlineComboboxInput />
<InlineComboboxContent>
<InlineComboboxEmpty>未找到标签</InlineComboboxEmpty>
{tags.map((tag) => (
<InlineComboboxItem
key={tag.id}
value={tag.name}
onClick={() => {
// 插入实际标签元素
editor.tf.insertNodes({
type: 'tag',
tagId: tag.id,
children: [{ text: tag.name }],
});
}}
>
<span
className={`w-3 h-3 rounded-full bg-${tag.color}-500 mr-2`}
/>
#{tag.name}
</InlineComboboxItem>
))}
</InlineComboboxContent>
</InlineCombobox>
{props.children}
</PlateElement>
);
}
export function TagElement({ element, ...props }) {
const selected = useSelected();
const focused = useFocused();
const readOnly = useReadOnly();
return (
<PlateElement
{...props}
className={cn(
'inline-block rounded-md bg-primary/10 px-1.5 py-0.5 align-baseline text-sm font-medium text-primary',
!readOnly && 'cursor-pointer',
selected && focused && 'ring-2 ring-ring'
)}
attributes={{
...props.attributes,
contentEditable: false,
'data-slate-value': element.value,
}}
>
#{element.value}
{props.children}
</PlateElement>
);
}import { PlateElement, useFocused, useReadOnly, useSelected } from 'platejs/react';
import {
InlineCombobox,
InlineComboboxContent,
InlineComboboxEmpty,
InlineComboboxInput,
InlineComboboxItem,
} from '@/components/ui/inline-combobox';
import { cn } from '@/lib/utils';
const tags = [
{ id: 'frontend', name: '前端', color: 'blue' },
{ id: 'backend', name: '后端', color: 'green' },
{ id: 'design', name: '设计', color: 'purple' },
{ id: 'urgent', name: '紧急', color: 'red' },
];
export function TagInputElement({ element, ...props }) {
return (
<PlateElement as="span" {...props}>
<InlineCombobox element={element} trigger="#">
<InlineComboboxInput />
<InlineComboboxContent>
<InlineComboboxEmpty>未找到标签</InlineComboboxEmpty>
{tags.map((tag) => (
<InlineComboboxItem
key={tag.id}
value={tag.name}
onClick={() => {
// 插入实际标签元素
editor.tf.insertNodes({
type: 'tag',
tagId: tag.id,
children: [{ text: tag.name }],
});
}}
>
<span
className={`w-3 h-3 rounded-full bg-${tag.color}-500 mr-2`}
/>
#{tag.name}
</InlineComboboxItem>
))}
</InlineComboboxContent>
</InlineCombobox>
{props.children}
</PlateElement>
);
}
export function TagElement({ element, ...props }) {
const selected = useSelected();
const focused = useFocused();
const readOnly = useReadOnly();
return (
<PlateElement
{...props}
className={cn(
'inline-block rounded-md bg-primary/10 px-1.5 py-0.5 align-baseline text-sm font-medium text-primary',
!readOnly && 'cursor-pointer',
selected && focused && 'ring-2 ring-ring'
)}
attributes={{
...props.attributes,
contentEditable: false,
'data-slate-value': element.value,
}}
>
#{element.value}
{props.children}
</PlateElement>
);
}添加到编辑器
import { createPlateEditor } from 'platejs/react';
import { TagPlugin, TagInputPlugin } from './tag-plugin';
import { TagElement, TagInputElement } from './tag-components';
const editor = createPlateEditor({
plugins: [
// ...其他插件
TagPlugin.configure({
options: {
triggerQuery: (editor) => {
// 在代码块中禁用
return !editor.api.some({ match: { type: 'code_block' } });
},
},
}).withComponent(TagElement),
TagInputPlugin.withComponent(TagInputElement),
],
});import { createPlateEditor } from 'platejs/react';
import { TagPlugin, TagInputPlugin } from './tag-plugin';
import { TagElement, TagInputElement } from './tag-components';
const editor = createPlateEditor({
plugins: [
// ...其他插件
TagPlugin.configure({
options: {
triggerQuery: (editor) => {
// 在代码块中禁用
return !editor.api.some({ match: { type: 'code_block' } });
},
},
}).withComponent(TagElement),
TagInputPlugin.withComponent(TagInputElement),
],
});options.triggerQuery: 根据编辑器状态有条件启用/禁用触发器的可选函数
示例
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配置选项
TriggerComboboxPluginOptions
基于触发器的组合框插件的配置选项。
钩子函数
useComboboxInput
管理组合框输入行为和键盘交互的钩子。
useHTMLInputCursorState
跟踪HTML输入元素中光标位置的钩子。