48 lines
1.3 KiB
JavaScript
48 lines
1.3 KiB
JavaScript
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function setAsync(context, data) {
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return new Promise(resolve => {
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context.setData(data, resolve);
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});
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}
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;
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export const behavior = Behavior({
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created() {
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if (!this.$options) {
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return;
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}
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const cache = {};
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const { computed } = this.$options();
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const keys = Object.keys(computed);
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this.calcComputed = () => {
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const needUpdate = {};
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keys.forEach(key => {
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const value = computed[key].call(this);
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if (cache[key] !== value) {
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cache[key] = needUpdate[key] = value;
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}
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});
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return needUpdate;
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};
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},
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attached() {
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this.set();
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},
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methods: {
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// set data and set computed data
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set(data, callback) {
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const stack = [];
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if (data) {
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stack.push(setAsync(this, data));
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}
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if (this.calcComputed) {
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stack.push(setAsync(this, this.calcComputed()));
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}
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return Promise.all(stack).then(res => {
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if (callback && typeof callback === 'function') {
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callback.call(this);
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}
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return res;
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});
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}
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}
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});
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