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126 lines
4.3 KiB
126 lines
4.3 KiB
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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var utils_1 = require("../common/utils");
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var component_1 = require("../common/component");
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var validator_1 = require("../common/validator");
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var page_scroll_1 = require("../mixins/page-scroll");
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var ROOT_ELEMENT = '.van-sticky';
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(0, component_1.VantComponent)({
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props: {
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zIndex: {
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type: Number,
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value: 99,
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},
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offsetTop: {
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type: Number,
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value: 0,
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observer: 'onScroll',
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},
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disabled: {
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type: Boolean,
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observer: 'onScroll',
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},
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container: {
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type: null,
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observer: 'onScroll',
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},
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scrollTop: {
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type: null,
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observer: function (val) {
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this.onScroll({ scrollTop: val });
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},
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},
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},
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mixins: [
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(0, page_scroll_1.pageScrollMixin)(function (event) {
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if (this.data.scrollTop != null) {
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return;
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}
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this.onScroll(event);
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}),
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],
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data: {
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height: 0,
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fixed: false,
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transform: 0,
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},
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mounted: function () {
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this.onScroll();
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},
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methods: {
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onScroll: function (_a) {
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var _this = this;
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var _b = _a === void 0 ? {} : _a, scrollTop = _b.scrollTop;
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var _c = this.data, container = _c.container, offsetTop = _c.offsetTop, disabled = _c.disabled;
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if (disabled) {
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this.setDataAfterDiff({
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fixed: false,
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transform: 0,
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});
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return;
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}
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this.scrollTop = scrollTop || this.scrollTop;
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if (typeof container === 'function') {
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Promise.all([(0, utils_1.getRect)(this, ROOT_ELEMENT), this.getContainerRect()])
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.then(function (_a) {
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var root = _a[0], container = _a[1];
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if (offsetTop + root.height > container.height + container.top) {
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_this.setDataAfterDiff({
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fixed: false,
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transform: container.height - root.height,
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});
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}
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else if (offsetTop >= root.top) {
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_this.setDataAfterDiff({
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fixed: true,
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height: root.height,
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transform: 0,
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});
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}
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else {
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_this.setDataAfterDiff({ fixed: false, transform: 0 });
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}
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})
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.catch(function () { });
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return;
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}
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(0, utils_1.getRect)(this, ROOT_ELEMENT).then(function (root) {
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if (!(0, validator_1.isDef)(root) || (!root.width && !root.height)) {
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return;
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}
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if (offsetTop >= root.top) {
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_this.setDataAfterDiff({ fixed: true, height: root.height });
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_this.transform = 0;
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}
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else {
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_this.setDataAfterDiff({ fixed: false });
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}
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});
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},
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setDataAfterDiff: function (data) {
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var _this = this;
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wx.nextTick(function () {
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var diff = Object.keys(data).reduce(function (prev, key) {
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if (data[key] !== _this.data[key]) {
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prev[key] = data[key];
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}
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return prev;
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}, {});
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if (Object.keys(diff).length > 0) {
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_this.setData(diff);
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}
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_this.$emit('scroll', {
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scrollTop: _this.scrollTop,
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isFixed: data.fixed || _this.data.fixed,
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});
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});
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},
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getContainerRect: function () {
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var nodesRef = this.data.container();
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if (!nodesRef) {
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return Promise.reject(new Error('not found container'));
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}
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return new Promise(function (resolve) { return nodesRef.boundingClientRect(resolve).exec(); });
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},
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},
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});
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