legendAction.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.
*/
var echarts = require("../../echarts");
var zrUtil = require("zrender/lib/core/util");
/*
* 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.
*/
function legendSelectActionHandler(methodName, payload, ecModel) {
var selectedMap = {};
var isToggleSelect = methodName === 'toggleSelected';
var isSelected; // Update all legend components
ecModel.eachComponent('legend', function (legendModel) {
if (isToggleSelect && isSelected != null) {
// Force other legend has same selected status
// Or the first is toggled to true and other are toggled to false
// In the case one legend has some item unSelected in option. And if other legend
// doesn't has the item, they will assume it is selected.
legendModel[isSelected ? 'select' : 'unSelect'](payload.name);
} else {
legendModel[methodName](payload.name);
isSelected = legendModel.isSelected(payload.name);
}
var legendData = legendModel.getData();
zrUtil.each(legendData, function (model) {
var name = model.get('name'); // Wrap element
if (name === '\n' || name === '') {
return;
}
var isItemSelected = legendModel.isSelected(name);
if (selectedMap.hasOwnProperty(name)) {
// Unselected if any legend is unselected
selectedMap[name] = selectedMap[name] && isItemSelected;
} else {
selectedMap[name] = isItemSelected;
}
});
}); // Return the event explicitly
return {
name: payload.name,
selected: selectedMap
};
}
/**
* @event legendToggleSelect
* @type {Object}
* @property {string} type 'legendToggleSelect'
* @property {string} [from]
* @property {string} name Series name or data item name
*/
echarts.registerAction('legendToggleSelect', 'legendselectchanged', zrUtil.curry(legendSelectActionHandler, 'toggleSelected'));
/**
* @event legendSelect
* @type {Object}
* @property {string} type 'legendSelect'
* @property {string} name Series name or data item name
*/
echarts.registerAction('legendSelect', 'legendselected', zrUtil.curry(legendSelectActionHandler, 'select'));
/**
* @event legendUnSelect
* @type {Object}
* @property {string} type 'legendUnSelect'
* @property {string} name Series name or data item name
*/
echarts.registerAction('legendUnSelect', 'legendunselected', zrUtil.curry(legendSelectActionHandler, 'unSelect'));