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node_modules/echarts/lib/component/dataZoom/history.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.
+*/
+
+
+/**
+ * AUTO-GENERATED FILE. DO NOT MODIFY.
+ */
+
+/*
+* 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/lib/core/util.js';
+import { makeInner } from '../../util/model.js';
+var each = zrUtil.each;
+var inner = makeInner();
+/**
+ * @param ecModel
+ * @param newSnapshot key is dataZoomId
+ */
+export function push(ecModel, newSnapshot) {
+  var storedSnapshots = getStoreSnapshots(ecModel);
+  // If previous dataZoom can not be found,
+  // complete an range with current range.
+  each(newSnapshot, function (batchItem, dataZoomId) {
+    var i = storedSnapshots.length - 1;
+    for (; i >= 0; i--) {
+      var snapshot = storedSnapshots[i];
+      if (snapshot[dataZoomId]) {
+        break;
+      }
+    }
+    if (i < 0) {
+      // No origin range set, create one by current range.
+      var dataZoomModel = ecModel.queryComponents({
+        mainType: 'dataZoom',
+        subType: 'select',
+        id: dataZoomId
+      })[0];
+      if (dataZoomModel) {
+        var percentRange = dataZoomModel.getPercentRange();
+        storedSnapshots[0][dataZoomId] = {
+          dataZoomId: dataZoomId,
+          start: percentRange[0],
+          end: percentRange[1]
+        };
+      }
+    }
+  });
+  storedSnapshots.push(newSnapshot);
+}
+export function pop(ecModel) {
+  var storedSnapshots = getStoreSnapshots(ecModel);
+  var head = storedSnapshots[storedSnapshots.length - 1];
+  storedSnapshots.length > 1 && storedSnapshots.pop();
+  // Find top for all dataZoom.
+  var snapshot = {};
+  each(head, function (batchItem, dataZoomId) {
+    for (var i = storedSnapshots.length - 1; i >= 0; i--) {
+      batchItem = storedSnapshots[i][dataZoomId];
+      if (batchItem) {
+        snapshot[dataZoomId] = batchItem;
+        break;
+      }
+    }
+  });
+  return snapshot;
+}
+export function clear(ecModel) {
+  inner(ecModel).snapshots = null;
+}
+export function count(ecModel) {
+  return getStoreSnapshots(ecModel).length;
+}
+/**
+ * History length of each dataZoom may be different.
+ * this._history[0] is used to store origin range.
+ */
+function getStoreSnapshots(ecModel) {
+  var store = inner(ecModel);
+  if (!store.snapshots) {
+    store.snapshots = [{}];
+  }
+  return store.snapshots;
+}