@tamagui/react-native-web-lite
Version:
React Native for Web
96 lines (95 loc) • 3.42 kB
JavaScript
import VirtualizedList from "../VirtualizedList";
import * as React from "react";
import { jsx } from "react/jsx-runtime";
const defaultProps = {
data: [],
key: null,
renderItem: null,
ItemSeparatorComponent: null,
keyExtractor: null
};
class VirtualizedSectionList extends React.PureComponent {
scrollToLocation(params) {
let index = params.itemIndex;
for (let i = 0; i < params.sectionIndex; i++) index += this.props.getItemCount(this.props.sections[i].data) + 2;
let viewOffset = params.viewOffset || 0;
if (this._listRef == null) return;
if (params.itemIndex > 0 && this.props.stickySectionHeadersEnabled) {
const frame = this._listRef.__getFrameMetricsApprox(index - params.itemIndex, this._listRef.props);
viewOffset += frame.length;
}
const toIndexParams = {
...params,
viewOffset,
index
};
this._listRef.scrollToIndex(toIndexParams);
}
getListRef() {
return this._listRef;
}
render() {
const {
ItemSeparatorComponent,
SectionSeparatorComponent,
renderItem: _renderItem,
renderSectionFooter,
renderSectionHeader,
sections: _sections,
stickySectionHeadersEnabled,
...passThroughProps
} = this.props,
listHeaderOffset = this.props.ListHeaderComponent ? 1 : 0,
stickyHeaderIndices = this.props.stickySectionHeadersEnabled ? [] : void 0;
let itemCount = 0;
for (const section of this.props.sections) stickyHeaderIndices?.push(itemCount + listHeaderOffset), itemCount += 2, itemCount += this.props.getItemCount(section.data);
const renderItem = this._renderItem(itemCount);
return /* @__PURE__ */jsx(VirtualizedList, {
...passThroughProps,
keyExtractor: this._keyExtractor,
stickyHeaderIndices,
renderItem,
data: this.props.sections,
getItem: (sections, index) => this._getItem(this.props, sections, index),
getItemCount: () => itemCount,
onViewableItemsChanged: this.props.onViewableItemsChanged ? this._onViewableItemsChanged : void 0,
ref: this._captureRef
});
}
_getItem(props, sections, index) {
if (!sections) return null;
let itemIdx = index - 1;
for (let i = 0; i < sections.length; i++) {
const section = sections[i],
sectionData = section.data,
itemCount = props.getItemCount(sectionData);
if (itemIdx === -1 || itemIdx === itemCount) return section;
if (itemIdx < itemCount) return props.getItem(sectionData, itemIdx);
itemIdx -= itemCount + 2;
}
return null;
}
_keyExtractor = (item, index) => (this.props.keyExtractor || this._defaultKeyExtractor)(item, index);
_defaultKeyExtractor = (item, index) => item.key != null ? item.key : String(index);
_captureRef = ref => {
this._listRef = ref;
};
_renderItem = itemCount => ({
item,
index
}) => index === 0 || index === itemCount - 1 ? null : (this.props.renderItem || this._defaultRenderItem)({
item,
index,
section: item
});
_defaultRenderItem = ({
item
}) => null;
_onViewableItemsChanged = info => {
this.props.onViewableItemsChanged && this.props.onViewableItemsChanged(info);
};
}
VirtualizedSectionList.defaultProps = defaultProps;
var VirtualizedSectionList_default = VirtualizedSectionList;
export { VirtualizedSectionList_default as default };
//# sourceMappingURL=index.mjs.map