recyclerlistview
Version:
The listview that you need and deserve. It was built for performance, uses cell recycling to achieve smooth scrolling.
84 lines • 3.87 kB
JavaScript
;
/**
* Created by ananya.chandra on 20/09/18.
*/
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
if (typeof b !== "function" && b !== null)
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
var StickyObject_1 = require("./StickyObject");
var BinarySearch_1 = require("../../utils/BinarySearch");
var StickyFooter = /** @class */ (function (_super) {
__extends(StickyFooter, _super);
function StickyFooter(props, context) {
return _super.call(this, props, context) || this;
}
StickyFooter.prototype.onScroll = function (offsetY) {
var endCorrection = this.getWindowCorrection(this.props).endCorrection;
if (endCorrection) {
this.containerPosition = { bottom: endCorrection };
offsetY -= endCorrection;
}
_super.prototype.onScroll.call(this, offsetY);
};
StickyFooter.prototype.initStickyParams = function () {
this.stickyType = StickyObject_1.StickyType.FOOTER;
this.stickyTypeMultiplier = -1;
this.containerPosition = { bottom: this.getWindowCorrection(this.props).endCorrection };
this.bounceScrolling = false;
};
StickyFooter.prototype.calculateVisibleStickyIndex = function (stickyIndices, _smallestVisibleIndex, largestVisibleIndex, offsetY, windowBound) {
if (stickyIndices && largestVisibleIndex) {
this.bounceScrolling = this.hasReachedBoundary(offsetY, windowBound);
if (largestVisibleIndex > stickyIndices[stickyIndices.length - 1] || this.bounceScrolling) {
this.stickyVisiblity = false;
//This is needed only in when the window is non-scrollable.
if (this.props.alwaysStickyFooter && offsetY === 0) {
this.stickyVisiblity = true;
}
}
else {
this.stickyVisiblity = true;
var valueAndIndex = BinarySearch_1.default.findValueLargerThanTarget(stickyIndices, largestVisibleIndex);
if (valueAndIndex) {
this.currentIndex = valueAndIndex.index;
this.currentStickyIndex = valueAndIndex.value;
}
else {
console.log("Footer sticky index calculation gone wrong."); //tslint:disable-line
}
}
}
};
StickyFooter.prototype.getNextYd = function (nextY, nextHeight) {
return -1 * (nextY + nextHeight);
};
StickyFooter.prototype.getCurrentYd = function (currentY, currentHeight) {
return -1 * (currentY + currentHeight);
};
StickyFooter.prototype.getScrollY = function (offsetY, scrollableHeight) {
return scrollableHeight ? -1 * (offsetY + scrollableHeight) : undefined;
};
StickyFooter.prototype.hasReachedBoundary = function (offsetY, windowBound) {
if (windowBound !== undefined) {
var endReachedMargin = Math.round(offsetY - (windowBound));
return endReachedMargin >= 0;
}
return false;
};
return StickyFooter;
}(StickyObject_1.default));
exports.default = StickyFooter;
//# sourceMappingURL=StickyFooter.js.map