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107 lines
2.7 KiB
107 lines
2.7 KiB
import { VantComponent } from '../common/component';
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import { touch } from '../mixins/touch';
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import { canIUseModel } from '../common/version';
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import { getRect } from '../common/utils';
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VantComponent({
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mixins: [touch],
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props: {
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disabled: Boolean,
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useButtonSlot: Boolean,
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activeColor: String,
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inactiveColor: String,
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max: {
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type: Number,
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value: 100,
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},
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min: {
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type: Number,
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value: 0,
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},
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step: {
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type: Number,
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value: 1,
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},
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value: {
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type: Number,
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value: 0,
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observer(val) {
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if (val !== this.value) {
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this.updateValue(val);
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}
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},
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},
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barHeight: {
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type: null,
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value: 2,
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},
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},
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created() {
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this.updateValue(this.data.value);
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},
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methods: {
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onTouchStart(event) {
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if (this.data.disabled) return;
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this.touchStart(event);
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this.startValue = this.format(this.value);
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this.dragStatus = 'start';
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},
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onTouchMove(event) {
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if (this.data.disabled) return;
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if (this.dragStatus === 'start') {
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this.$emit('drag-start');
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}
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this.touchMove(event);
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this.dragStatus = 'draging';
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getRect(this, '.van-slider').then((rect) => {
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const diff = (this.deltaX / rect.width) * this.getRange();
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this.newValue = this.startValue + diff;
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this.updateValue(this.newValue, false, true);
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});
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},
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onTouchEnd() {
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if (this.data.disabled) return;
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if (this.dragStatus === 'draging') {
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this.updateValue(this.newValue, true);
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this.$emit('drag-end');
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}
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},
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onClick(event) {
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if (this.data.disabled) return;
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const { min } = this.data;
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getRect(this, '.van-slider').then((rect) => {
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const value =
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((event.detail.x - rect.left) / rect.width) * this.getRange() + min;
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this.updateValue(value, true);
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});
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},
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updateValue(value, end, drag) {
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value = this.format(value);
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const { min } = this.data;
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const width = `${((value - min) * 100) / this.getRange()}%`;
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this.value = value;
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this.setData({
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barStyle: `
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width: ${width};
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${drag ? 'transition: none;' : ''}
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`,
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});
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if (drag) {
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this.$emit('drag', { value });
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}
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if (end) {
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this.$emit('change', value);
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}
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if ((drag || end) && canIUseModel()) {
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this.setData({ value });
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}
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},
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getRange() {
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const { max, min } = this.data;
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return max - min;
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},
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format(value) {
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const { max, min, step } = this.data;
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return Math.round(Math.max(min, Math.min(value, max)) / step) * step;
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},
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},
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});
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