@tamagui/react-native-web-lite
Version:
React Native for Web
285 lines (284 loc) • 8.72 kB
JavaScript
import { invariant } from "@tamagui/react-native-web-internals";
import { ScrollView } from "../../../ScrollView/index.mjs";
import { RefreshControl } from "../../../RefreshControl/index.mjs";
import { Batchinator } from "../Batchinator/index.mjs";
import { ChildListCollection } from "./ChildListCollection.mjs";
import { FillRateHelper } from "../FillRateHelper/index.mjs";
import { StateSafePureComponent } from "./StateSafePureComponent.mjs";
import { ViewabilityHelper } from "../ViewabilityHelper.mjs";
import { CellRenderer } from "./VirtualizedListCellRenderer.mjs";
import { VirtualizedListContext } from "./VirtualizedListContext.mjs";
import { jsx } from "react/jsx-runtime";
const __DEV__ = process.env.NODE_ENV !== "production";
function horizontalOrDefault(horizontal) {
return horizontal ?? false;
}
function scrollEventThrottleOrDefault(scrollEventThrottle) {
return scrollEventThrottle ?? 50;
}
class VirtualizedList extends StateSafePureComponent {
static contextType = VirtualizedListContext;
constructor(props) {
super(props);
this._nestedChildLists = new ChildListCollection();
this._viewabilityTuples = [];
this._scrollMetrics = {
contentLength: 0,
dOffset: 0,
dt: 10,
offset: 0,
timestamp: 0,
velocity: 0,
visibleLength: 0
};
this._highestMeasuredFrameIndex = 0;
this._headerLength = 0;
this._footerLength = 0;
this._averageCellLength = 0;
this._hasWarned = {};
this._fillRateHelper = new FillRateHelper(this._getFrameMetrics);
this._updateCellsToRenderBatcher = new Batchinator(this._updateCellsToRender, this.props.updateCellsBatchingPeriod ?? 50);
if (this.props.viewabilityConfig && this.props.onViewableItemsChanged) {
this._viewabilityTuples.push({
viewabilityHelper: new ViewabilityHelper(this.props.viewabilityConfig),
onViewableItemsChanged: this.props.onViewableItemsChanged
});
}
}
scrollToEnd(params) {
const animated = params ? params.animated : true;
const veryLast = this.props.getItemCount(this.props.data) - 1;
if (veryLast < 0) {
return;
}
const frame = this.__getFrameMetricsApprox(veryLast, this.props);
const offset = Math.max(0, frame.offset + frame.length + this._footerLength - this._scrollMetrics.visibleLength);
if (this._scrollRef == null) {
return;
}
if (this._scrollRef.scrollTo == null) {
console.warn("No scrollTo method provided. This may be because you have two nested VirtualizedLists with the same orientation, or because you are using a custom component that does not implement scrollTo.");
return;
}
this._scrollRef.scrollTo(horizontalOrDefault(this.props.horizontal) ? {
x: offset,
animated
} : {
y: offset,
animated
});
}
scrollToIndex(params) {
const {
data,
horizontal,
getItemCount,
getItemLayout,
onScrollToIndexFailed
} = this.props;
const {
animated,
index,
viewOffset,
viewPosition
} = params;
invariant(index >= 0, `scrollToIndex out of range: requested index ${index} but minimum is 0`);
invariant(getItemCount(data) >= 1, `scrollToIndex out of range: item length ${getItemCount(data)} but minimum is 1`);
invariant(index < getItemCount(data), `scrollToIndex out of range: requested index ${index} is out of 0 to ${getItemCount(data) - 1}`);
if (!getItemLayout && index > this._highestMeasuredFrameIndex) {
invariant(!!onScrollToIndexFailed, "scrollToIndex should be used in conjunction with getItemLayout or onScrollToIndexFailed, otherwise there is no way to know the location of offscreen indices or handle failures.");
onScrollToIndexFailed({
averageItemLength: this._averageCellLength,
highestMeasuredFrameIndex: this._highestMeasuredFrameIndex,
index
});
return;
}
const frame = this.__getFrameMetricsApprox(Math.floor(index), this.props);
const offset = Math.max(0, this._getOffsetApprox(index, this.props) - (viewPosition || 0) * (this._scrollMetrics.visibleLength - frame.length)) - (viewOffset || 0);
if (this._scrollRef == null) {
return;
}
this._scrollRef.scrollTo(horizontalOrDefault(horizontal) ? {
x: offset,
animated
} : {
y: offset,
animated
});
}
scrollToItem(params) {
const {
data,
getItem,
getItemCount,
horizontal,
onScrollToIndexFailed
} = this.props;
const {
animated,
item,
viewPosition,
viewOffset
} = params;
const index = this.props.data.indexOf(item);
if (index !== -1) {
this.scrollToIndex({
animated,
index,
viewOffset,
viewPosition
});
} else {
const itemCount = getItemCount(data);
for (let i = 0; i < itemCount; i++) {
if (getItem(data, i) === item) {
this.scrollToIndex({
animated,
index: i,
viewOffset,
viewPosition
});
break;
}
}
}
}
scrollToOffset(params) {
const {
animated,
offset
} = params;
if (this._scrollRef == null) {
return;
}
this._scrollRef.scrollTo(horizontalOrDefault(this.props.horizontal) ? {
x: offset,
animated
} : {
y: offset,
animated
});
}
recordInteraction() {
this._nestedChildLists.forEach(childList => {
childList.recordInteraction();
});
this._viewabilityTuples.forEach(viewabilityTuple => {
viewabilityTuple.viewabilityHelper.recordInteraction();
});
}
flashScrollIndicators() {
if (this._scrollRef && this._scrollRef.flashScrollIndicators) {
this._scrollRef.flashScrollIndicators();
}
}
getScrollResponder() {
if (this._scrollRef && this._scrollRef.getScrollResponder) {
return this._scrollRef.getScrollResponder();
}
}
getScrollableNode() {
if (this._scrollRef && this._scrollRef.getScrollableNode) {
return this._scrollRef.getScrollableNode();
}
}
getScrollRef() {
return this._scrollRef;
}
setNativeProps(props) {
if (this._scrollRef) {
this._scrollRef.setNativeProps(props);
}
}
render() {
const {
ListEmptyComponent,
ListFooterComponent,
ListHeaderComponent,
data,
debug,
disableVirtualization,
getItem,
getItemCount,
getItemLayout,
horizontal,
keyExtractor,
numColumns,
onEndReached,
onEndReachedThreshold,
onLayout,
onRefresh,
onScroll,
onScrollBeginDrag,
onScrollEndDrag,
onMomentumScrollBegin,
onMomentumScrollEnd,
onStartReached,
onStartReachedThreshold,
onViewableItemsChanged,
refreshing,
removeClippedSubviews,
renderItem,
viewabilityConfig,
viewabilityConfigCallbackPairs,
...restProps
} = this.props;
const itemCount = getItemCount(data);
if (itemCount === 0) {
return ListEmptyComponent ? /* @__PURE__ */jsx(ListEmptyComponent, {}) : null;
}
return /* @__PURE__ */jsx(ScrollView, {
...restProps,
ref: this._captureRef,
onContentSizeChange: this._onContentSizeChange,
onLayout: this._onLayout,
onScroll: this._onScroll,
refreshControl: onRefresh && /* @__PURE__ */jsx(RefreshControl, {
refreshing,
onRefresh
}),
scrollEventThrottle: scrollEventThrottleOrDefault(this.props.scrollEventThrottle),
removeClippedSubviews,
children: this._renderChildren()
});
}
_renderChildren() {
const {
data,
getItem,
getItemCount,
renderItem
} = this.props;
const items = [];
for (let i = 0; i < getItemCount(data); i++) {
const item = getItem(data, i);
items.push(/* @__PURE__ */jsx(CellRenderer, {
cellKey: String(i),
index: i,
item,
renderItem
}, this.props.keyExtractor ? this.props.keyExtractor(item, i) : i));
}
return items;
}
_captureRef = ref => {
this._scrollRef = ref;
};
_onContentSizeChange = (width, height) => {};
_onLayout = event => {};
_onScroll = event => {};
__getFrameMetricsApprox(index, props) {
const frame = {
length: this._averageCellLength,
offset: this._averageCellLength * index
};
return frame;
}
_getOffsetApprox(index, props) {
return this.__getFrameMetricsApprox(index, props).offset;
}
}
var VirtualizedList_default = VirtualizedList;
export { VirtualizedList, VirtualizedList_default as default };
//# sourceMappingURL=index.mjs.map