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attribution_control.js
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attribution_control.js
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// @flow
import DOM from '../../util/dom';
import { bindAll } from '../../util/util';
import config from '../../util/config';
import type Map from '../map';
type Options = {
compact?: boolean,
customAttribution?: string | Array<string>
};
/**
* An `AttributionControl` control presents the map's [attribution information](https://www.mapbox.com/help/attribution/).
*
* @implements {IControl}
* @param {Object} [options]
* @param {boolean} [options.compact] If `true` force a compact attribution that shows the full attribution on mouse hover, or if `false` force the full attribution control. The default is a responsive attribution that collapses when the map is less than 640 pixels wide.
* @param {string | Array<string>} [options.customAttribution] String or strings to show in addition to any other attributions.
* @example
* var map = new mapboxgl.Map({attributionControl: false})
* .addControl(new mapboxgl.AttributionControl({
* compact: true
* }));
*/
class AttributionControl {
options: Options;
_map: Map;
_container: HTMLElement;
_innerContainer: HTMLElement;
_editLink: ?HTMLAnchorElement;
styleId: string;
styleOwner: string;
constructor(options: Options = {}) {
this.options = options;
bindAll([
'_updateEditLink',
'_updateData',
'_updateCompact'
], this);
}
getDefaultPosition() {
return 'bottom-right';
}
onAdd(map: Map) {
const compact = this.options && this.options.compact;
this._map = map;
this._container = DOM.create('div', 'mapboxgl-ctrl mapboxgl-ctrl-attrib');
this._innerContainer = DOM.create('div', 'mapboxgl-ctrl-attrib-inner', this._container);
if (compact) {
this._container.classList.add('mapboxgl-compact');
}
this._updateAttributions();
this._updateEditLink();
this._map.on('styledata', this._updateData);
this._map.on('sourcedata', this._updateData);
this._map.on('moveend', this._updateEditLink);
if (compact === undefined) {
this._map.on('resize', this._updateCompact);
this._updateCompact();
}
return this._container;
}
onRemove() {
DOM.remove(this._container);
this._map.off('styledata', this._updateData);
this._map.off('sourcedata', this._updateData);
this._map.off('moveend', this._updateEditLink);
this._map.off('resize', this._updateCompact);
this._map = (undefined: any);
}
_updateEditLink() {
let editLink = this._editLink;
if (!editLink) {
editLink = this._editLink = (this._container.querySelector('.mapbox-improve-map'): any);
}
const params = [
{key: "owner", value: this.styleOwner},
{key: "id", value: this.styleId},
{key: "access_token", value: config.ACCESS_TOKEN}
];
if (editLink) {
const paramString = params.reduce((acc, next, i) => {
if (next.value) {
acc += `${next.key}=${next.value}${i < params.length - 1 ? '&' : ''}`;
}
return acc;
}, `?`);
editLink.href = `${config.FEEDBACK_URL}/${paramString}${this._map._hash ? this._map._hash.getHashString(true) : ''}`;
}
}
_updateData(e: any) {
if (e && (e.sourceDataType === 'metadata' || e.dataType === 'style')) {
this._updateAttributions();
this._updateEditLink();
}
}
_updateAttributions() {
if (!this._map.style) return;
let attributions: Array<string> = [];
if (this.options.customAttribution) {
if (Array.isArray(this.options.customAttribution)) {
attributions = attributions.concat(
this.options.customAttribution.map(attribution => {
if (typeof attribution !== 'string') return '';
return attribution;
})
);
} else if (typeof this.options.customAttribution === 'string') {
attributions.push(this.options.customAttribution);
}
}
if (this._map.style.stylesheet) {
const stylesheet: any = this._map.style.stylesheet;
this.styleOwner = stylesheet.owner;
this.styleId = stylesheet.id;
}
const sourceCaches = this._map.style.sourceCaches;
for (const id in sourceCaches) {
const sourceCache = sourceCaches[id];
if (sourceCache.used) {
const source = sourceCache.getSource();
if (source.attribution && attributions.indexOf(source.attribution) < 0) {
attributions.push(source.attribution);
}
}
}
// remove any entries that are substrings of another entry.
// first sort by length so that substrings come first
attributions.sort((a, b) => a.length - b.length);
attributions = attributions.filter((attrib, i) => {
for (let j = i + 1; j < attributions.length; j++) {
if (attributions[j].indexOf(attrib) >= 0) { return false; }
}
return true;
});
if (attributions.length) {
this._innerContainer.innerHTML = attributions.join(' | ');
this._container.classList.remove('mapboxgl-attrib-empty');
} else {
this._container.classList.add('mapboxgl-attrib-empty');
}
// remove old DOM node from _editLink
this._editLink = null;
}
_updateCompact() {
if (this._map.getCanvasContainer().offsetWidth <= 640) {
this._container.classList.add('mapboxgl-compact');
} else {
this._container.classList.remove('mapboxgl-compact');
}
}
}
export default AttributionControl;