190 lines
6.7 KiB
TypeScript
190 lines
6.7 KiB
TypeScript
import { Component, Host, Input, Output, EventEmitter, OnInit, OnChanges, SimpleChanges, forwardRef, Inject, InjectionToken } from '@angular/core';
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import { LayerVectorComponent, SourceVectorComponent, MapComponent } from 'ngx-openlayers';
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import { ItemService,ItemTypeService,IItem, IItemType } from '@farmmaps/common';
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import { Feature } from 'ol';
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import { Point } from 'ol/geom';
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import { MapBrowserEvent } from 'ol';
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import * as style from 'ol/style';
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import * as color from 'ol/color';
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import * as loadingstrategy from 'ol/loadingstrategy';
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import * as condition from 'ol/events/condition';
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import * as extent from 'ol/extent';
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import {Vector,Cluster} from 'ol/source';
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import {Layer} from 'ol/layer';
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import {GeoJSON} from 'ol/format';
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import {Select} from 'ol/interaction';
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import {IStyles} from '../../../models/style.cache';
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import {FeatureIconService} from '../../../services/feature-icon.service';
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@Component({
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selector: 'fm-map-item-source-vector',
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template: `<ng-content></ng-content>`,
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providers: [
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{ provide: SourceVectorComponent , useExisting: forwardRef(() => ItemVectorSourceComponent) }
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]
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})
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export class ItemVectorSourceComponent extends SourceVectorComponent implements OnInit, OnChanges {
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instance: Vector;
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private _format: GeoJSON;
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private _select: Select;
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private _hoverSelect: Select;
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private _iconScale: number = 0.05;
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@Input() features: Array<Feature>;
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@Input() selectedFeature: Feature;
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@Input() selectedItem: IItem;
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@Input() styles:IStyles;
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@Output() onFeaturesSelected: EventEmitter<Feature> = new EventEmitter<Feature>();
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@Output() onFeatureHover: EventEmitter<Feature> = new EventEmitter<Feature>();
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private stylesCache:IStyles = {};
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constructor(@Host() private layer: LayerVectorComponent, private itemService: ItemService, @Host() private map: MapComponent, private itemTypeService: ItemTypeService,private featureIconService$:FeatureIconService) {
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super(layer);
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this._format = new GeoJSON();
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}
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geometry(feature: Feature) {
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let view = this.map.instance.getView();
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let resolution = view.getResolution();
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var geometry = feature.getGeometry();
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let e = geometry.getExtent();
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//var size = Math.max((e[2] - e[0]) / resolution, (e[3] - e[1]) / resolution);
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if (resolution > 12) {
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geometry = new Point(extent.getCenter(e));
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}
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return geometry;
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}
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getSelectedStyle(feature:Feature):style.Style {
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let key = feature.get('itemType')+"_selected";
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let evaluatedStyle =null;
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var styleEntry = this.stylesCache[key];
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if(styleEntry) {
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if(typeof styleEntry === 'function') {
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evaluatedStyle = styleEntry(feature);
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} else {
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evaluatedStyle = styleEntry;
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}
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} else {
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evaluatedStyle = this.stylesCache["selected"];
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}
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if(evaluatedStyle ) {
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evaluatedStyle.setGeometry((feature) => this.geometry(feature));
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}
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return evaluatedStyle
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}
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ngOnInit() {
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this.strategy = loadingstrategy.bbox;
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this.format = new GeoJSON();
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this._select = new Select({
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style:null,
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hitTolerance: 10,
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layers: [this.layer.instance as Layer]
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});
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this._hoverSelect = new Select({
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style: (feature) => {
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return this.getSelectedStyle(feature);
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},
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hitTolerance: 10,
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condition: (e: MapBrowserEvent) => {
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return e.type == 'pointermove';
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},
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layers: [this.layer.instance as Layer]
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});
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this.map.instance.addInteraction(this._select);
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this.map.instance.addInteraction(this._hoverSelect);
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this._select.on('select', (e) => {
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if (e.selected.length > 0 && e.selected[0]) {
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this.onFeaturesSelected.emit(e.selected[0]);
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} else {
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this.onFeaturesSelected.emit(null);
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}
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});
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this._hoverSelect.on('select', (e) => {
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if (e.selected.length > 0 && e.selected[0]) {
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this.onFeatureHover.emit(e.selected[0]);
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} else {
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this.onFeatureHover.emit(null);
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}
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});
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this.instance = new Vector(this);
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this.host.instance.setSource(this.instance);
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this.host.instance.setStyle((feature) => {
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var key = feature.get('itemType') + (this.selectedItem?"_I":"");
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if (!this.stylesCache[key]) {
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if (this.itemTypeService.itemTypes[key]) {
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let itemType = this.itemTypeService.itemTypes[key];
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let fillColor = color.asArray(itemType.iconColor);
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fillColor[3] = this.selectedItem?0:0.5;
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this.stylesCache[key] = new style.Style({
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image: itemType.icon ? new style.Icon({
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anchor: [0.5, 1],
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scale: 0.05,
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src: this.featureIconService$.getIconImageDataUrl(itemType.icon)
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}):null,
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stroke: new style.Stroke({
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color: 'red',
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width: 1
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}),
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fill: new style.Fill({
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color: fillColor
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}),
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geometry:(feature) => this.geometry(feature)
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});
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} else {
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key = 'file';
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}
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}
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let evaluatedStyle =null;
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var styleEntry = this.stylesCache[key];
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if(typeof styleEntry === 'function') {
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evaluatedStyle = styleEntry(feature);
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} else {
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evaluatedStyle = styleEntry;
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}
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if(evaluatedStyle && evaluatedStyle.geometry_ == null) {
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evaluatedStyle.setGeometry((feature) => this.geometry(feature));
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}
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return evaluatedStyle;
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});
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}
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ngOnChanges(changes: SimpleChanges) {
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if (changes["features"] && this.instance) {
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this.instance.clear(true);
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this._select.getFeatures().clear();
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this.instance.addFeatures(changes["features"].currentValue);
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}
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if (changes["selectedFeature"] && this.instance) {
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var features = this._hoverSelect.getFeatures();
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var feature = changes["selectedFeature"].currentValue
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//this.instance.clear(false);
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//this.instance.addFeatures(features.getArray());
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features.clear();
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if (feature) {
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//this.instance.removeFeature(feature);
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features.push(feature)
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}
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}
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if (changes["selectedItem"] && this.instance) {
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var item = changes["selectedItem"].currentValue
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if (item) {
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this.map.instance.removeInteraction(this._hoverSelect);
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} else {
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this.map.instance.addInteraction(this._hoverSelect);
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}
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}
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if (changes["styles"] && this.instance) {
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let styles = changes["styles"].currentValue;
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for (const key in styles) {
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if (styles.hasOwnProperty(key)) {
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this.stylesCache[key]=styles[key];
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}
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}
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}
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}
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}
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