d108bdc4cc
In polymer 2 the following change was made: Property change notifications (property-changed events) aren't fired when the value changes as a result of a binding from the host (see https://polymer-library.polymer-project.org/2.0/docs/about_20). The polymer team suggested to use observer instead of {property}-changed event. Bug: Issue 11316 Change-Id: I12d1860d3ee836724c111605725d806687ec2141
48 lines
1.5 KiB
JavaScript
48 lines
1.5 KiB
JavaScript
/**
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* @license
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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(function() {
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'use strict';
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Polymer({
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is: 'gr-endpoint-param',
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_legacyUndefinedCheck: true,
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properties: {
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name: String,
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value: {
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type: Object,
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notify: true,
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observer: '_valueChanged',
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},
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},
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_valueChanged(newValue, oldValue) {
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/* In polymer 2 the following change was made:
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"Property change notifications (property-changed events) aren't fired when
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the value changes as a result of a binding from the host"
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(see https://polymer-library.polymer-project.org/2.0/docs/about_20).
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To workaround this problem, we fire the event from the observer.
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In some cases this fire the event twice, but our code is
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ready for it.
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*/
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const detail = {
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value: newValue,
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};
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this.dispatchEvent(new CustomEvent('value-changed', {detail}));
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},
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});
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})();
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