nativescript-image-swipe
Version:
A widget to easily swipe and zoom through images
81 lines (80 loc) • 3.03 kB
JavaScript
;
function __export(m) {
for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];
}
Object.defineProperty(exports, "__esModule", { value: true });
var observable_array_1 = require("data/observable-array");
var view_1 = require("ui/core/view");
var weak_event_listener_1 = require("ui/core/weak-event-listener");
var image_cache_1 = require("ui/image-cache");
var scroll_view_1 = require("ui/scroll-view");
__export(require("ui/scroll-view"));
var ImageSwipeBase = (function (_super) {
__extends(ImageSwipeBase, _super);
function ImageSwipeBase() {
var _this = _super.call(this) || this;
if (!ImageSwipeBase_1._imageCache) {
ImageSwipeBase_1._imageCache = new image_cache_1.Cache();
ImageSwipeBase_1._imageCache.maxRequests = 3;
}
return _this;
}
ImageSwipeBase_1 = ImageSwipeBase;
ImageSwipeBase.prototype._getDataItem = function (index) {
return this.isItemsSourceIn ? this.items.getItem(index) : this.items[index];
};
var ImageSwipeBase_1;
ImageSwipeBase.pageChangedEvent = "pageChanged";
ImageSwipeBase = ImageSwipeBase_1 = __decorate([
view_1.CSSType("ImageSwipe")
], ImageSwipeBase);
return ImageSwipeBase;
}(scroll_view_1.ScrollView));
exports.ImageSwipeBase = ImageSwipeBase;
exports.pageNumberProperty = new view_1.CoercibleProperty({
name: "pageNumber",
defaultValue: 0,
valueConverter: function (v) { return parseInt(v, 10); },
coerceValue: function (target, value) {
var items = target.items;
if (items && items.length !== 0) {
var max = items.length - 1;
if (value < 0) {
value = 0;
}
if (value > max) {
value = max;
}
}
else {
value = null;
}
return value;
}
});
exports.pageNumberProperty.register(ImageSwipeBase);
exports.itemsProperty = new view_1.Property({
name: "items",
valueChanged: function (target, oldValue, newValue) {
var getItem = newValue && newValue.getItem;
target.isItemsSourceIn = typeof getItem === "function";
if (oldValue instanceof observable_array_1.ObservableArray) {
weak_event_listener_1.removeWeakEventListener(oldValue, observable_array_1.ObservableArray.changeEvent, target.refresh, target);
}
if (newValue instanceof observable_array_1.ObservableArray) {
weak_event_listener_1.addWeakEventListener(newValue, observable_array_1.ObservableArray.changeEvent, target.refresh, target);
}
target.refresh();
}
});
exports.itemsProperty.register(ImageSwipeBase);
exports.imageUrlPropertyProperty = new view_1.Property({
name: "imageUrlProperty",
defaultValue: ""
});
exports.imageUrlPropertyProperty.register(ImageSwipeBase);
exports.allowZoomProperty = new view_1.Property({
name: "allowZoom",
defaultValue: true
});
exports.allowZoomProperty.register(ImageSwipeBase);