dimensionHelper.js
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/*
* 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, assert} from 'zrender/src/core/util';
import { __DEV__ } from '../../config';
export var OTHER_DIMENSIONS = createHashMap([
'tooltip', 'label', 'itemName', 'itemId', 'seriesName'
]);
export function summarizeDimensions(data) {
var summary = {};
var encode = summary.encode = {};
var notExtraCoordDimMap = createHashMap();
var defaultedLabel = [];
var defaultedTooltip = [];
each(data.dimensions, function (dimName) {
var dimItem = data.getDimensionInfo(dimName);
var coordDim = dimItem.coordDim;
if (coordDim) {
if (__DEV__) {
assert(OTHER_DIMENSIONS.get(coordDim) == null);
}
var coordDimArr = encode[coordDim];
if (!encode.hasOwnProperty(coordDim)) {
coordDimArr = encode[coordDim] = [];
}
coordDimArr[dimItem.coordDimIndex] = dimName;
if (!dimItem.isExtraCoord) {
notExtraCoordDimMap.set(coordDim, 1);
// Use the last coord dim (and label friendly) as default label,
// because when dataset is used, it is hard to guess which dimension
// can be value dimension. If both show x, y on label is not look good,
// and conventionally y axis is focused more.
if (mayLabelDimType(dimItem.type)) {
defaultedLabel[0] = dimName;
}
}
if (dimItem.defaultTooltip) {
defaultedTooltip.push(dimName);
}
}
OTHER_DIMENSIONS.each(function (v, otherDim) {
var otherDimArr = encode[otherDim];
if (!encode.hasOwnProperty(otherDim)) {
otherDimArr = encode[otherDim] = [];
}
var dimIndex = dimItem.otherDims[otherDim];
if (dimIndex != null && dimIndex !== false) {
otherDimArr[dimIndex] = dimItem.name;
}
});
});
var dataDimsOnCoord = [];
var encodeFirstDimNotExtra = {};
notExtraCoordDimMap.each(function (v, coordDim) {
var dimArr = encode[coordDim];
// ??? FIXME extra coord should not be set in dataDimsOnCoord.
// But should fix the case that radar axes: simplify the logic
// of `completeDimension`, remove `extraPrefix`.
encodeFirstDimNotExtra[coordDim] = dimArr[0];
// Not necessary to remove duplicate, because a data
// dim canot on more than one coordDim.
dataDimsOnCoord = dataDimsOnCoord.concat(dimArr);
});
summary.dataDimsOnCoord = dataDimsOnCoord;
summary.encodeFirstDimNotExtra = encodeFirstDimNotExtra;
var encodeLabel = encode.label;
// FIXME `encode.label` is not recommanded, because formatter can not be set
// in this way. Use label.formatter instead. May be remove this approach someday.
if (encodeLabel && encodeLabel.length) {
defaultedLabel = encodeLabel.slice();
}
var encodeTooltip = encode.tooltip;
if (encodeTooltip && encodeTooltip.length) {
defaultedTooltip = encodeTooltip.slice();
}
else if (!defaultedTooltip.length) {
defaultedTooltip = defaultedLabel.slice();
}
encode.defaultedLabel = defaultedLabel;
encode.defaultedTooltip = defaultedTooltip;
return summary;
}
export function getDimensionTypeByAxis(axisType) {
return axisType === 'category'
? 'ordinal'
: axisType === 'time'
? 'time'
: 'float';
}
function mayLabelDimType(dimType) {
// In most cases, ordinal and time do not suitable for label.
// Ordinal info can be displayed on axis. Time is too long.
return !(dimType === 'ordinal' || dimType === 'time');
}
// function findTheLastDimMayLabel(data) {
// // Get last value dim
// var dimensions = data.dimensions.slice();
// var valueType;
// var valueDim;
// while (dimensions.length && (
// valueDim = dimensions.pop(),
// valueType = data.getDimensionInfo(valueDim).type,
// valueType === 'ordinal' || valueType === 'time'
// )) {} // jshint ignore:line
// return valueDim;
// }