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123 lines
4.1 KiB
123 lines
4.1 KiB
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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var component_1 = require("../common/component");
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var utils_1 = require("../common/utils");
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var validator_1 = require("../common/validator");
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var DEFAULT_DURATION = 200;
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(0, component_1.VantComponent)({
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classes: ['active-class'],
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props: {
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valueKey: String,
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className: String,
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itemHeight: Number,
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visibleItemCount: Number,
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initialOptions: {
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type: Array,
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value: [],
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},
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defaultIndex: {
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type: Number,
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value: 0,
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observer: function (value) {
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this.setIndex(value);
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},
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},
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},
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data: {
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startY: 0,
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offset: 0,
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duration: 0,
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startOffset: 0,
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options: [],
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currentIndex: 0,
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},
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created: function () {
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var _this = this;
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var _a = this.data, defaultIndex = _a.defaultIndex, initialOptions = _a.initialOptions;
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this.set({
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currentIndex: defaultIndex,
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options: initialOptions,
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}).then(function () {
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_this.setIndex(defaultIndex);
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});
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},
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methods: {
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getCount: function () {
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return this.data.options.length;
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},
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onTouchStart: function (event) {
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this.setData({
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startY: event.touches[0].clientY,
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startOffset: this.data.offset,
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duration: 0,
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});
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},
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onTouchMove: function (event) {
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var data = this.data;
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var deltaY = event.touches[0].clientY - data.startY;
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this.setData({
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offset: (0, utils_1.range)(data.startOffset + deltaY, -(this.getCount() * data.itemHeight), data.itemHeight),
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});
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},
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onTouchEnd: function () {
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var data = this.data;
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if (data.offset !== data.startOffset) {
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this.setData({ duration: DEFAULT_DURATION });
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var index = (0, utils_1.range)(Math.round(-data.offset / data.itemHeight), 0, this.getCount() - 1);
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this.setIndex(index, true);
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}
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},
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onClickItem: function (event) {
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var index = event.currentTarget.dataset.index;
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this.setIndex(index, true);
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},
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adjustIndex: function (index) {
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var data = this.data;
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var count = this.getCount();
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index = (0, utils_1.range)(index, 0, count);
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for (var i = index; i < count; i++) {
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if (!this.isDisabled(data.options[i]))
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return i;
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}
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for (var i = index - 1; i >= 0; i--) {
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if (!this.isDisabled(data.options[i]))
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return i;
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}
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},
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isDisabled: function (option) {
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return (0, validator_1.isObj)(option) && option.disabled;
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},
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getOptionText: function (option) {
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var data = this.data;
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return (0, validator_1.isObj)(option) && data.valueKey in option
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? option[data.valueKey]
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: option;
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},
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setIndex: function (index, userAction) {
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var _this = this;
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var data = this.data;
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index = this.adjustIndex(index) || 0;
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var offset = -index * data.itemHeight;
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if (index !== data.currentIndex) {
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return this.set({ offset: offset, currentIndex: index }).then(function () {
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userAction && _this.$emit('change', index);
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});
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}
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return this.set({ offset: offset });
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},
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setValue: function (value) {
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var options = this.data.options;
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for (var i = 0; i < options.length; i++) {
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if (this.getOptionText(options[i]) === value) {
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return this.setIndex(i);
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}
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}
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return Promise.resolve();
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},
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getValue: function () {
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var data = this.data;
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return data.options[data.currentIndex];
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},
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},
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});
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