echarts preprocessor 源码
echarts preprocessor 代码
文件路径：/src/component/brush/preprocessor.ts
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import * as zrUtil from 'zrender/src/core/util';
import { ECUnitOption, Dictionary } from '../../util/types';
import { BrushOption, BrushToolboxIconType } from './BrushModel';
import { ToolboxOption } from '../toolbox/ToolboxModel';
import { ToolboxBrushFeatureOption } from '../toolbox/feature/Brush';
import { normalizeToArray } from '../../util/model';
const DEFAULT_TOOLBOX_BTNS: BrushToolboxIconType[] = ['rect', 'polygon', 'keep', 'clear'];
export default function brushPreprocessor(option: ECUnitOption, isNew: boolean): void {
const brushComponents = normalizeToArray(option ? option.brush : []);
if (!brushComponents.length) {
return;
}
let brushComponentSpecifiedBtns = [] as string[];
zrUtil.each(brushComponents, function (brushOpt: BrushOption) {
const tbs = brushOpt.hasOwnProperty('toolbox')
? brushOpt.toolbox : [];
if (tbs instanceof Array) {
brushComponentSpecifiedBtns = brushComponentSpecifiedBtns.concat(tbs);
}
});
let toolbox: ToolboxOption = option && option.toolbox;
if (zrUtil.isArray(toolbox)) {
toolbox = toolbox[0];
}
if (!toolbox) {
toolbox = {feature: {}};
option.toolbox = [toolbox];
}
const toolboxFeature = (toolbox.feature || (toolbox.feature = {}));
const toolboxBrush = (toolboxFeature.brush || (toolboxFeature.brush = {})) as ToolboxBrushFeatureOption;
const brushTypes = toolboxBrush.type || (toolboxBrush.type = []);
brushTypes.push.apply(brushTypes, brushComponentSpecifiedBtns);
removeDuplicate(brushTypes);
if (isNew && !brushTypes.length) {
brushTypes.push.apply(brushTypes, DEFAULT_TOOLBOX_BTNS);
}
}
function removeDuplicate(arr: string[]): void {
const map = {} as Dictionary<number>;
zrUtil.each(arr, function (val) {
map[val] = 1;
});
arr.length = 0;
zrUtil.each(map, function (flag, val) {
arr.push(val);
});
}
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