/
LeafletView.ts
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/
LeafletView.ts
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// Copyright 2015-2021 Swim inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/// <reference types="leaflet"/>
import {AnyTiming, Timing} from "@swim/mapping";
import {GeoPoint} from "@swim/geo";
import {Look, Mood} from "@swim/theme";
import {View} from "@swim/view";
import {HtmlView} from "@swim/dom";
import type {CanvasView} from "@swim/graphics";
import {AnyGeoPerspective, MapView} from "@swim/map";
import {LeafletViewport} from "./LeafletViewport";
import type {LeafletViewObserver} from "./LeafletViewObserver";
import type {LeafletViewController} from "./LeafletViewController";
export class LeafletView extends MapView {
constructor(map: L.Map) {
super();
Object.defineProperty(this, "map", {
value: map,
enumerable: true,
});
Object.defineProperty(this, "geoViewport", {
value: LeafletViewport.create(map),
enumerable: true,
configurable: true,
});
this.onMapRender = this.onMapRender.bind(this);
this.onMoveStart = this.onMoveStart.bind(this);
this.onMoveEnd = this.onMoveEnd.bind(this);
this.initMap(map);
}
override readonly viewController!: LeafletViewController | null;
override readonly viewObservers!: ReadonlyArray<LeafletViewObserver>;
readonly map!: L.Map;
protected initMap(map: L.Map): void {
map.on("move", this.onMapRender);
map.on("movestart", this.onMoveStart);
map.on("moveend", this.onMoveEnd);
}
override readonly geoViewport!: LeafletViewport;
protected willSetGeoViewport(newGeoViewport: LeafletViewport, oldGeoViewport: LeafletViewport): void {
const viewController = this.viewController;
if (viewController !== null && viewController.viewWillSetGeoViewport !== void 0) {
viewController.viewWillSetGeoViewport(newGeoViewport, oldGeoViewport, this);
}
const viewObservers = this.viewObservers;
for (let i = 0, n = viewObservers.length; i < n; i += 1) {
const viewObserver = viewObservers[i]!;
if (viewObserver.viewWillSetGeoViewport !== void 0) {
viewObserver.viewWillSetGeoViewport(newGeoViewport, oldGeoViewport, this);
}
}
}
protected onSetGeoViewport(newGeoViewport: LeafletViewport, oldGeoViewport: LeafletViewport): void {
// hook
}
protected didSetGeoViewport(newGeoViewport: LeafletViewport, oldGeoViewport: LeafletViewport): void {
const viewObservers = this.viewObservers;
for (let i = 0, n = viewObservers.length; i < n; i += 1) {
const viewObserver = viewObservers[i]!
if (viewObserver.viewDidSetGeoViewport !== void 0) {
viewObserver.viewDidSetGeoViewport(newGeoViewport, oldGeoViewport, this);
}
}
const viewController = this.viewController;
if (viewController !== null && viewController.viewDidSetGeoViewport !== void 0) {
viewController.viewDidSetGeoViewport(newGeoViewport, oldGeoViewport, this);
}
}
protected updateGeoViewport(): boolean {
const oldGeoViewport = this.geoViewport;
const newGeoViewport = LeafletViewport.create(this.map);
if (!newGeoViewport.equals(oldGeoViewport)) {
this.willSetGeoViewport(newGeoViewport, oldGeoViewport);
Object.defineProperty(this, "geoViewport", {
value: newGeoViewport,
enumerable: true,
configurable: true,
});
this.onSetGeoViewport(newGeoViewport, oldGeoViewport);
this.didSetGeoViewport(newGeoViewport, oldGeoViewport);
return true;
}
return false;
}
protected onMapRender(): void {
if (this.updateGeoViewport()) {
const immediate = !this.isHidden() && !this.isCulled();
this.requireUpdate(View.NeedsProject, immediate);
}
}
protected onMoveStart(): void {
this.willMoveMap();
}
protected onMoveEnd(): void {
this.didMoveMap();
}
override moveTo(geoPerspective: AnyGeoPerspective, timing?: AnyTiming | boolean): void {
const options: L.ZoomPanOptions = {};
const geoViewport = this.geoViewport;
let geoCenter = geoPerspective.geoCenter;
if (geoCenter !== void 0 && geoCenter !== null) {
geoCenter = GeoPoint.fromAny(geoCenter);
} else {
geoCenter = geoViewport.geoCenter;
}
const zoom = geoPerspective.zoom;
if (timing === void 0 || timing === true) {
timing = this.getLookOr(Look.timing, Mood.ambient, false);
} else {
timing = Timing.fromAny(timing);
}
if (timing instanceof Timing) {
options.animate = true;
options.duration = timing.duration;
}
this.map.flyTo(geoCenter, zoom, options);
}
protected willMoveMap(): void {
const viewController = this.viewController;
if (viewController !== null && viewController.viewWillMoveMap !== void 0) {
viewController.viewWillMoveMap(this);
}
const viewObservers = this.viewObservers;
for (let i = 0, n = viewObservers.length; i < n; i += 1) {
const viewObserver = viewObservers[i]!;
if (viewObserver.viewWillMoveMap !== void 0) {
viewObserver.viewWillMoveMap(this);
}
}
}
protected didMoveMap(): void {
const viewObservers = this.viewObservers;
for (let i = 0, n = viewObservers.length; i < n; i += 1) {
const viewObserver = viewObservers[i]!
if (viewObserver.viewDidMoveMap !== void 0) {
viewObserver.viewDidMoveMap(this);
}
}
const viewController = this.viewController;
if (viewController !== null && viewController.viewDidMoveMap !== void 0) {
viewController.viewDidMoveMap(this);
}
}
protected override attachCanvas(canvasView: CanvasView): void {
super.attachCanvas(canvasView);
if (this.parentView === null) {
canvasView.appendChildView(this);
}
}
protected override detachCanvas(canvasView: CanvasView): void {
if (this.parentView === canvasView) {
canvasView.removeChildView(this);
}
super.detachCanvas(canvasView);
}
protected override initContainer(containerView: HtmlView): void {
super.initContainer(containerView);
HtmlView.fromNode(containerView.node.querySelector(".leaflet-control-container") as HTMLDivElement);
}
protected override attachContainer(containerView: HtmlView): void {
super.attachContainer(containerView);
const controlContainerView = HtmlView.fromNode(containerView.node.querySelector(".leaflet-control-container") as HTMLDivElement);
const canvasView = this.canvas.injectView(containerView, void 0, controlContainerView);
if (canvasView !== null) {
canvasView.zIndex.setState(500, View.Intrinsic);
}
}
protected override detachContainer(containerView: HtmlView): void {
const canvasView = this.canvas.view;
if (canvasView !== null && canvasView.parentView === containerView) {
containerView.removeChildView(containerView);
}
super.detachContainer(containerView);
}
}