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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 * as zrUtil from 'zrender/src/core/util';
import GlobalModel from '../../model/Global';
import { Dictionary } from '../../util/types';
import DataZoomModel from './DataZoomModel';
import { makeInner } from '../../util/model';
import { DataZoomPayloadBatchItem } from './helper';
const each = zrUtil.each;
export type DataZoomStoreSnapshot = Dictionary<DataZoomPayloadBatchItem>;
type Store = {
snapshots: DataZoomStoreSnapshot[]
};
const inner = makeInner<Store, GlobalModel>();
/**
* @param ecModel
* @param newSnapshot key is dataZoomId
*/
export function push(ecModel: GlobalModel, newSnapshot: DataZoomStoreSnapshot) {
const storedSnapshots = getStoreSnapshots(ecModel);
// If previous dataZoom can not be found,
// complete an range with current range.
each(newSnapshot, function (batchItem, dataZoomId) {
let i = storedSnapshots.length - 1;
for (; i >= 0; i--) {
const snapshot = storedSnapshots[i];
if (snapshot[dataZoomId]) {
break;
}
}
if (i < 0) {
// No origin range set, create one by current range.
const dataZoomModel = ecModel.queryComponents(
{mainType: 'dataZoom', subType: 'select', id: dataZoomId}
)[0] as DataZoomModel;
if (dataZoomModel) {
const percentRange = dataZoomModel.getPercentRange();
storedSnapshots[0][dataZoomId] = {
dataZoomId: dataZoomId,
start: percentRange[0],
end: percentRange[1]
};
}
}
});
storedSnapshots.push(newSnapshot);
}
export function pop(ecModel: GlobalModel) {
const storedSnapshots = getStoreSnapshots(ecModel);
const head = storedSnapshots[storedSnapshots.length - 1];
storedSnapshots.length > 1 && storedSnapshots.pop();
// Find top for all dataZoom.
const snapshot: DataZoomStoreSnapshot = {};
each(head, function (batchItem, dataZoomId) {
for (let i = storedSnapshots.length - 1; i >= 0; i--) {
batchItem = storedSnapshots[i][dataZoomId];
if (batchItem) {
snapshot[dataZoomId] = batchItem;
break;
}
}
});
return snapshot;
}
export function clear(ecModel: GlobalModel) {
inner(ecModel).snapshots = null;
}
export function count(ecModel: GlobalModel) {
return getStoreSnapshots(ecModel).length;
}
/**
* History length of each dataZoom may be different.
* this._history[0] is used to store origin range.
*/
function getStoreSnapshots(ecModel: GlobalModel) {
const store = inner(ecModel);
if (!store.snapshots) {
store.snapshots = [{}];
}
return store.snapshots;
}
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