echarts DataZoomModel 源码
echarts DataZoomModel 代码
文件路径：/src/component/dataZoom/DataZoomModel.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 { each, createHashMap, merge, HashMap, assert } from 'zrender/src/core/util';
import AxisProxy from './AxisProxy';
import ComponentModel from '../../model/Component';
import {
LayoutOrient,
ComponentOption,
LabelOption
} from '../../util/types';
import Model from '../../model/Model';
import GlobalModel from '../../model/Global';
import { AxisBaseModel } from '../../coord/AxisBaseModel';
import {
getAxisMainType, DATA_ZOOM_AXIS_DIMENSIONS, DataZoomAxisDimension
} from './helper';
import SingleAxisModel from '../../coord/single/AxisModel';
import { MULTIPLE_REFERRING, SINGLE_REFERRING } from '../../util/model';
export interface DataZoomOption extends ComponentOption {
mainType?: 'dataZoom'
/**
* Default auto by axisIndex
*/
orient?: LayoutOrient
/**
* Default the first horizontal category axis.
*/
xAxisIndex?: number | number[]
xAxisId?: string | string[]
/**
* Default the first vertical category axis.
*/
yAxisIndex?: number | number[]
yAxisId?: string | string[]
radiusAxisIndex?: number | number[]
radiusAxisId?: string | string[]
angleAxisIndex?: number | number[]
angleAxisId?: string | string[]
singleAxisIndex?: number | number[]
singleAxisId?: string | string[]
/**
* Possible values: 'filter' or 'empty' or 'weakFilter'.
* 'filter': data items which are out of window will be removed. This option is
* applicable when filtering outliers. For each data item, it will be
* filtered if one of the relevant dimensions is out of the window.
* 'weakFilter': data items which are out of window will be removed. This option
* is applicable when filtering outliers. For each data item, it will be
* filtered only if all of the relevant dimensions are out of the same
* side of the window.
* 'empty': data items which are out of window will be set to empty.
* This option is applicable when user should not neglect
* that there are some data items out of window.
* 'none': Do not filter.
* Taking line chart as an example, line will be broken in
* the filtered points when filterModel is set to 'empty', but
* be connected when set to 'filter'.
*/
filterMode?: 'filter' | 'weakFilter' | 'empty' | 'none'
/**
* Dispatch action by the fixed rate, avoid frequency.
* default 100. Do not throttle when use null/undefined.
* If animation === true and animationDurationUpdate > 0,
* default value is 100, otherwise 20.
*/
throttle?: number | null | undefined
/**
* Start percent. 0 ~ 100
*/
start?: number
/**
* End percent. 0 ~ 100
*/
end?: number
/**
* Start value. If startValue specified, start is ignored
*/
startValue?: number | string | Date
/**
* End value. If endValue specified, end is ignored.
*/
endValue?: number | string | Date
/**
* Min span percent, 0 - 100
* The range of dataZoom can not be smaller than that.
*/
minSpan?: number
/**
* Max span percent, 0 - 100
* The range of dataZoom can not be larger than that.
*/
maxSpan?: number
minValueSpan?: number
maxValueSpan?: number
rangeMode?: ['value' | 'percent', 'value' | 'percent']
realtime?: boolean
// Available when type is slider
textStyle?: LabelOption
}
type RangeOption = Pick<DataZoomOption, 'start' | 'end' | 'startValue' | 'endValue'>;
export type DataZoomExtendedAxisBaseModel = AxisBaseModel & {
__dzAxisProxy: AxisProxy
};
class DataZoomAxisInfo {
indexList: number[] = [];
indexMap: boolean[] = [];
add(axisCmptIdx: number) {
// Remove duplication.
if (!this.indexMap[axisCmptIdx]) {
this.indexList.push(axisCmptIdx);
this.indexMap[axisCmptIdx] = true;
}
}
}
export type DataZoomTargetAxisInfoMap = HashMap<DataZoomAxisInfo, DataZoomAxisDimension>;
class DataZoomModel<Opts extends DataZoomOption = DataZoomOption> extends ComponentModel<Opts> {
static type = 'dataZoom';
type = DataZoomModel.type;
static dependencies = [
'xAxis', 'yAxis', 'radiusAxis', 'angleAxis', 'singleAxis', 'series', 'toolbox'
];
static defaultOption: DataZoomOption = {
// zlevel: 0,
z: 4, // Higher than normal component (z: 2).
filterMode: 'filter',
start: 0,
end: 100
};
private _autoThrottle = true;
private _orient: LayoutOrient;
private _targetAxisInfoMap: DataZoomTargetAxisInfoMap;
private _noTarget: boolean = true;
/**
* It is `[rangeModeForMin, rangeModeForMax]`.
* The optional values for `rangeMode`:
* + `'value'` mode: the axis extent will always be determined by
* `dataZoom.startValue` and `dataZoom.endValue`, despite
* how data like and how `axis.min` and `axis.max` are.
* + `'percent'` mode: `100` represents 100% of the `[dMin, dMax]`,
* where `dMin` is `axis.min` if `axis.min` specified, otherwise `data.extent[0]`,
* and `dMax` is `axis.max` if `axis.max` specified, otherwise `data.extent[1]`.
* Axis extent will be determined by the result of the percent of `[dMin, dMax]`.
*
* For example, when users are using dynamic data (update data periodically via `setOption`),
* if in `'value`' mode, the window will be kept in a fixed value range despite how
* data are appended, while if in `'percent'` mode, whe window range will be changed alone with
* the appended data (suppose `axis.min` and `axis.max` are not specified).
*/
private _rangePropMode: DataZoomOption['rangeMode'] = ['percent', 'percent'];
/**
* @readonly
*/
settledOption: Opts;
init(option: Opts, parentModel: Model, ecModel: GlobalModel): void {
const inputRawOption = retrieveRawOption(option);
/**
* Suppose a "main process" start at the point that model prepared (that is,
* model initialized or merged or method called in `action`).
* We should keep the `main process` idempotent, that is, given a set of values
* on `option`, we get the same result.
*
* But sometimes, values on `option` will be updated for providing users
* a "final calculated value" (`dataZoomProcessor` will do that). Those value
* should not be the base/input of the `main process`.
*
* So in that case we should save and keep the input of the `main process`
* separately, called `settledOption`.
*
* For example, consider the case:
* (Step_1) brush zoom the grid by `toolbox.dataZoom`,
* where the original input `option.startValue`, `option.endValue` are earsed by
* calculated value.
* (Step)2) click the legend to hide and show a series,
* where the new range is calculated by the earsed `startValue` and `endValue`,
* which brings incorrect result.
*/
this.settledOption = inputRawOption;
this.mergeDefaultAndTheme(option, ecModel);
this._doInit(inputRawOption);
}
mergeOption(newOption: Opts): void {
const inputRawOption = retrieveRawOption(newOption);
// FIX #2591
merge(this.option, newOption, true);
merge(this.settledOption, inputRawOption, true);
this._doInit(inputRawOption);
}
private _doInit(inputRawOption: Opts): void {
const thisOption = this.option;
this._setDefaultThrottle(inputRawOption);
this._updateRangeUse(inputRawOption);
const settledOption = this.settledOption;
each([['start', 'startValue'], ['end', 'endValue']] as const, function (names, index) {
// start/end has higher priority over startValue/endValue if they
// both set, but we should make chart.setOption({endValue: 1000})
// effective, rather than chart.setOption({endValue: 1000, end: null}).
if (this._rangePropMode[index] === 'value') {
thisOption[names[0]] = settledOption[names[0]] = null;
}
// Otherwise do nothing and use the merge result.
}, this);
this._resetTarget();
}
private _resetTarget() {
const optionOrient = this.get('orient', true);
const targetAxisIndexMap = this._targetAxisInfoMap = createHashMap<DataZoomAxisInfo, DataZoomAxisDimension>();
const hasAxisSpecified = this._fillSpecifiedTargetAxis(targetAxisIndexMap);
if (hasAxisSpecified) {
this._orient = optionOrient || this._makeAutoOrientByTargetAxis();
}
else {
this._orient = optionOrient || 'horizontal';
this._fillAutoTargetAxisByOrient(targetAxisIndexMap, this._orient);
}
this._noTarget = true;
targetAxisIndexMap.each(function (axisInfo) {
if (axisInfo.indexList.length) {
this._noTarget = false;
}
}, this);
}
private _fillSpecifiedTargetAxis(targetAxisIndexMap: DataZoomTargetAxisInfoMap): boolean {
let hasAxisSpecified = false;
each(DATA_ZOOM_AXIS_DIMENSIONS, function (axisDim) {
const refering = this.getReferringComponents(getAxisMainType(axisDim), MULTIPLE_REFERRING);
// When user set axisIndex as a empty array, we think that user specify axisIndex
// but do not want use auto mode. Because empty array may be encountered when
// some error occured.
if (!refering.specified) {
return;
}
hasAxisSpecified = true;
const axisInfo = new DataZoomAxisInfo();
each(refering.models, function (axisModel) {
axisInfo.add(axisModel.componentIndex);
});
targetAxisIndexMap.set(axisDim, axisInfo);
}, this);
return hasAxisSpecified;
}
private _fillAutoTargetAxisByOrient(targetAxisIndexMap: DataZoomTargetAxisInfoMap, orient: LayoutOrient): void {
const ecModel = this.ecModel;
let needAuto = true;
// Find axis that parallel to dataZoom as default.
if (needAuto) {
const axisDim = orient === 'vertical' ? 'y' : 'x';
const axisModels = ecModel.findComponents({ mainType: axisDim + 'Axis' });
setParallelAxis(axisModels, axisDim);
}
// Find axis that parallel to dataZoom as default.
if (needAuto) {
const axisModels = ecModel.findComponents({
mainType: 'singleAxis',
filter: (axisModel: SingleAxisModel) => axisModel.get('orient', true) === orient
});
setParallelAxis(axisModels, 'single');
}
function setParallelAxis(axisModels: ComponentModel[], axisDim: DataZoomAxisDimension): void {
// At least use the first parallel axis as the target axis.
const axisModel = axisModels[0];
if (!axisModel) {
return;
}
const axisInfo = new DataZoomAxisInfo();
axisInfo.add(axisModel.componentIndex);
targetAxisIndexMap.set(axisDim, axisInfo);
needAuto = false;
// Find parallel axes in the same grid.
if (axisDim === 'x' || axisDim === 'y') {
const gridModel = axisModel.getReferringComponents('grid', SINGLE_REFERRING).models[0];
gridModel && each(axisModels, function (axModel) {
if (axisModel.componentIndex !== axModel.componentIndex
&& gridModel === axModel.getReferringComponents('grid', SINGLE_REFERRING).models[0]
) {
axisInfo.add(axModel.componentIndex);
}
});
}
}
if (needAuto) {
// If no parallel axis, find the first category axis as default. (Also consider polar).
each(DATA_ZOOM_AXIS_DIMENSIONS, function (axisDim) {
if (!needAuto) {
return;
}
const axisModels = ecModel.findComponents({
mainType: getAxisMainType(axisDim),
filter: (axisModel: SingleAxisModel) => axisModel.get('type', true) === 'category'
});
if (axisModels[0]) {
const axisInfo = new DataZoomAxisInfo();
axisInfo.add(axisModels[0].componentIndex);
targetAxisIndexMap.set(axisDim, axisInfo);
needAuto = false;
}
}, this);
}
}
private _makeAutoOrientByTargetAxis(): LayoutOrient {
let dim: string;
// Find the first axis
this.eachTargetAxis(function (axisDim) {
!dim && (dim = axisDim);
}, this);
return dim === 'y' ? 'vertical' : 'horizontal';
}
private _setDefaultThrottle(inputRawOption: DataZoomOption): void {
// When first time user set throttle, auto throttle ends.
if (inputRawOption.hasOwnProperty('throttle')) {
this._autoThrottle = false;
}
if (this._autoThrottle) {
const globalOption = this.ecModel.option;
this.option.throttle = (
globalOption.animation && globalOption.animationDurationUpdate > 0
) ? 100 : 20;
}
}
private _updateRangeUse(inputRawOption: RangeOption): void {
const rangePropMode = this._rangePropMode;
const rangeModeInOption = this.get('rangeMode');
each([['start', 'startValue'], ['end', 'endValue']] as const, function (names, index) {
const percentSpecified = inputRawOption[names[0]] != null;
const valueSpecified = inputRawOption[names[1]] != null;
if (percentSpecified && !valueSpecified) {
rangePropMode[index] = 'percent';
}
else if (!percentSpecified && valueSpecified) {
rangePropMode[index] = 'value';
}
else if (rangeModeInOption) {
rangePropMode[index] = rangeModeInOption[index];
}
else if (percentSpecified) { // percentSpecified && valueSpecified
rangePropMode[index] = 'percent';
}
// else remain its original setting.
});
}
noTarget(): boolean {
return this._noTarget;
}
getFirstTargetAxisModel(): AxisBaseModel {
let firstAxisModel: AxisBaseModel;
this.eachTargetAxis(function (axisDim, axisIndex) {
if (firstAxisModel == null) {
firstAxisModel = this.ecModel.getComponent(
getAxisMainType(axisDim), axisIndex
) as AxisBaseModel;
}
}, this);
return firstAxisModel;
}
/**
* @param {Function} callback param: axisModel, dimNames, axisIndex, dataZoomModel, ecModel
*/
eachTargetAxis<Ctx>(
callback: (
this: Ctx,
axisDim: DataZoomAxisDimension,
axisIndex: number
) => void,
context?: Ctx
): void {
this._targetAxisInfoMap.each(function (axisInfo, axisDim) {
each(axisInfo.indexList, function (axisIndex) {
callback.call(context, axisDim, axisIndex);
});
});
}
/**
* @return If not found, return null/undefined.
*/
getAxisProxy(axisDim: DataZoomAxisDimension, axisIndex: number): AxisProxy {
const axisModel = this.getAxisModel(axisDim, axisIndex);
if (axisModel) {
return (axisModel as DataZoomExtendedAxisBaseModel).__dzAxisProxy;
}
}
/**
* @return If not found, return null/undefined.
*/
getAxisModel(axisDim: DataZoomAxisDimension, axisIndex: number): AxisBaseModel {
if (__DEV__) {
assert(axisDim && axisIndex != null);
}
const axisInfo = this._targetAxisInfoMap.get(axisDim);
if (axisInfo && axisInfo.indexMap[axisIndex]) {
return this.ecModel.getComponent(getAxisMainType(axisDim), axisIndex) as AxisBaseModel;
}
}
/**
* If not specified, set to undefined.
*/
setRawRange(opt: RangeOption): void {
const thisOption = this.option;
const settledOption = this.settledOption;
each([['start', 'startValue'], ['end', 'endValue']] as const, function (names) {
// Consider the pair <start, startValue>:
// If one has value and the other one is `null/undefined`, we both set them
// to `settledOption`. This strategy enables the feature to clear the original
// value in `settledOption` to `null/undefined`.
// But if both of them are `null/undefined`, we do not set them to `settledOption`
// and keep `settledOption` with the original value. This strategy enables users to
// only set <end or endValue> but not set <start or startValue> when calling
// `dispatchAction`.
// The pair <end, endValue> is treated in the same way.
if (opt[names[0]] != null || opt[names[1]] != null) {
thisOption[names[0]] = settledOption[names[0]] = opt[names[0]];
thisOption[names[1]] = settledOption[names[1]] = opt[names[1]];
}
}, this);
this._updateRangeUse(opt);
}
setCalculatedRange(opt: RangeOption): void {
const option = this.option;
each(['start', 'startValue', 'end', 'endValue'] as const, function (name) {
(option as any)[name] = opt[name];
});
}
getPercentRange(): number[] {
const axisProxy = this.findRepresentativeAxisProxy();
if (axisProxy) {
return axisProxy.getDataPercentWindow();
}
}
/**
* For example, chart.getModel().getComponent('dataZoom').getValueRange('y', 0);
*
* @return [startValue, endValue] value can only be '-' or finite number.
*/
getValueRange(axisDim: DataZoomAxisDimension, axisIndex: number): number[] {
if (axisDim == null && axisIndex == null) {
const axisProxy = this.findRepresentativeAxisProxy();
if (axisProxy) {
return axisProxy.getDataValueWindow();
}
}
else {
return this.getAxisProxy(axisDim, axisIndex).getDataValueWindow();
}
}
/**
* @param axisModel If axisModel given, find axisProxy
* corresponding to the axisModel
*/
findRepresentativeAxisProxy(axisModel?: AxisBaseModel): AxisProxy {
if (axisModel) {
return (axisModel as DataZoomExtendedAxisBaseModel).__dzAxisProxy;
}
// Find the first hosted axisProxy
let firstProxy;
const axisDimList = this._targetAxisInfoMap.keys();
for (let i = 0; i < axisDimList.length; i++) {
const axisDim = axisDimList[i];
const axisInfo = this._targetAxisInfoMap.get(axisDim);
for (let j = 0; j < axisInfo.indexList.length; j++) {
const proxy = this.getAxisProxy(axisDim, axisInfo.indexList[j]);
if (proxy.hostedBy(this)) {
return proxy;
}
if (!firstProxy) {
firstProxy = proxy;
}
}
}
// If no hosted proxy found, still need to return a proxy.
// This case always happens in toolbox dataZoom, where axes are all hosted by
// other dataZooms.
return firstProxy;
}
getRangePropMode(): DataZoomModel['_rangePropMode'] {
return this._rangePropMode.slice() as DataZoomModel['_rangePropMode'];
}
getOrient(): LayoutOrient {
if (__DEV__) {
// Should not be called before initialized.
assert(this._orient);
}
return this._orient;
}
}
/**
* Retrieve the those raw params from option, which will be cached separately.
* becasue they will be overwritten by normalized/calculated values in the main
* process.
*/
function retrieveRawOption<T extends DataZoomOption>(option: T) {
const ret = {} as T;
each(
['start', 'end', 'startValue', 'endValue', 'throttle'] as const,
function (name) {
option.hasOwnProperty(name) && ((ret as any)[name] = option[name]);
}
);
return ret;
}
export default DataZoomModel;
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