FlowChartToolbar.vue
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<template>
<div :class="`${prefixCls}-toolbar`" class="flex items-center px-2 py-1">
<template v-for="item in toolbarItemList" :key="item.type">
<Tooltip placement="bottom" v-bind="item.disabled ? { visible: false } : {}">
<template #title>{{ item.tooltip }}</template>
<span :class="`${prefixCls}-toolbar__icon`" v-if="item.icon" @click="onControl(item)">
<Icon
:icon="item.icon"
:class="item.disabled ? 'cursor-not-allowed disabeld' : 'cursor-pointer'"
/>
</span>
</Tooltip>
<Divider v-if="item.separate" type="vertical" />
</template>
</div>
</template>
<script lang="ts">
import type { ToolbarConfig } from './types';
import { defineComponent, ref, onUnmounted, unref, nextTick, watchEffect } from 'vue';
import { Divider, Tooltip } from 'ant-design-vue';
import { Icon } from '/@/components/Icon';
import { useFlowChartContext } from './useFlowContext';
import { ToolbarTypeEnum } from './enum';
export default defineComponent({
name: 'FlowChartToolbar',
components: { Icon, Divider, Tooltip },
props: {
prefixCls: String,
},
emits: ['view-data'],
setup(_, { emit }) {
const toolbarItemList = ref<ToolbarConfig[]>([
{
type: ToolbarTypeEnum.ZOOM_IN,
icon: 'codicon:zoom-out',
tooltip: '缩小',
},
{
type: ToolbarTypeEnum.ZOOM_OUT,
icon: 'codicon:zoom-in',
tooltip: '放大',
},
{
type: ToolbarTypeEnum.RESET_ZOOM,
icon: 'codicon:screen-normal',
tooltip: '重置比例',
},
{ separate: true },
{
type: ToolbarTypeEnum.UNDO,
icon: 'ion:arrow-undo-outline',
tooltip: '后退',
disabled: true,
},
{
type: ToolbarTypeEnum.REDO,
icon: 'ion:arrow-redo-outline',
tooltip: '前进',
disabled: true,
},
{ separate: true },
{
type: ToolbarTypeEnum.SNAPSHOT,
icon: 'ion:download-outline',
tooltip: '下载',
},
{
type: ToolbarTypeEnum.VIEW_DATA,
icon: 'carbon:document-view',
tooltip: '查看数据',
},
]);
const { logicFlow } = useFlowChartContext();
function onHistoryChange({ data: { undoAble, redoAble } }) {
const itemsList = unref(toolbarItemList);
const undoIndex = itemsList.findIndex((item) => item.type === ToolbarTypeEnum.UNDO);
const redoIndex = itemsList.findIndex((item) => item.type === ToolbarTypeEnum.REDO);
if (undoIndex !== -1) {
unref(toolbarItemList)[undoIndex].disabled = !undoAble;
}
if (redoIndex !== -1) {
unref(toolbarItemList)[redoIndex].disabled = !redoAble;
}
}
const onControl = (item) => {
const lf = unref(logicFlow);
if (!lf) {
return;
}
switch (item.type) {
case ToolbarTypeEnum.ZOOM_IN:
lf.zoom();
break;
case ToolbarTypeEnum.ZOOM_OUT:
lf.zoom(true);
break;
case ToolbarTypeEnum.RESET_ZOOM:
lf.resetZoom();
break;
case ToolbarTypeEnum.UNDO:
lf.undo();
break;
case ToolbarTypeEnum.REDO:
lf.redo();
break;
case ToolbarTypeEnum.SNAPSHOT:
lf.getSnapshot();
break;
case ToolbarTypeEnum.VIEW_DATA:
emit('view-data');
break;
}
};
watchEffect(async () => {
if (unref(logicFlow)) {
await nextTick();
unref(logicFlow)?.on('history:change', onHistoryChange);
}
});
onUnmounted(() => {
unref(logicFlow)?.off('history:change', onHistoryChange);
});
return { toolbarItemList, onControl };
},
});
</script>
<style lang="less">
@prefix-cls: ~'@{namespace}-flow-chart-toolbar';
html[data-theme='dark'] {
.lf-dnd {
background: #080808;
}
}
.@{prefix-cls} {
height: 36px;
background-color: @app-content-background;
border-bottom: 1px solid @border-color-base;
.disabeld {
color: @disabled-color;
}
&__icon {
display: inline-block;
padding: 2px 4px;
margin-right: 10px;
&:hover {
color: @primary-color;
}
}
}
</style>