coopgo/node_modules/ol/interaction/KeyboardPan.js

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 __());
    };
})();
/**
 * @module ol/interaction/KeyboardPan
 */
import EventType from '../events/EventType.js';
import Interaction, { pan } from './Interaction.js';
import KeyCode from '../events/KeyCode.js';
import { noModifierKeys, targetNotEditable } from '../events/condition.js';
import { rotate as rotateCoordinate } from '../coordinate.js';
/**
 * @typedef {Object} Options
 * @property {import("../events/condition.js").Condition} [condition] A function that
 * takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a
 * boolean to indicate whether that event should be handled. Default is
 * {@link module:ol/events/condition.noModifierKeys} and
 * {@link module:ol/events/condition.targetNotEditable}.
 * @property {number} [duration=100] Animation duration in milliseconds.
 * @property {number} [pixelDelta=128] The amount of pixels to pan on each key
 * press.
 */
/**
 * @classdesc
 * Allows the user to pan the map using keyboard arrows.
 * Note that, although this interaction is by default included in maps,
 * the keys can only be used when browser focus is on the element to which
 * the keyboard events are attached. By default, this is the map div,
 * though you can change this with the `keyboardEventTarget` in
 * {@link module:ol/Map~Map}. `document` never loses focus but, for any other
 * element, focus will have to be on, and returned to, this element if the keys
 * are to function.
 * See also {@link module:ol/interaction/KeyboardZoom~KeyboardZoom}.
 * @api
 */
var KeyboardPan = /** @class */ (function (_super) {
    __extends(KeyboardPan, _super);
    /**
     * @param {Options} [opt_options] Options.
     */
    function KeyboardPan(opt_options) {
        var _this = _super.call(this) || this;
        var options = opt_options || {};
        /**
         * @private
         * @param {import("../MapBrowserEvent.js").default} mapBrowserEvent Browser event.
         * @return {boolean} Combined condition result.
         */
        _this.defaultCondition_ = function (mapBrowserEvent) {
            return (noModifierKeys(mapBrowserEvent) && targetNotEditable(mapBrowserEvent));
        };
        /**
         * @private
         * @type {import("../events/condition.js").Condition}
         */
        _this.condition_ =
            options.condition !== undefined
                ? options.condition
                : _this.defaultCondition_;
        /**
         * @private
         * @type {number}
         */
        _this.duration_ = options.duration !== undefined ? options.duration : 100;
        /**
         * @private
         * @type {number}
         */
        _this.pixelDelta_ =
            options.pixelDelta !== undefined ? options.pixelDelta : 128;
        return _this;
    }
    /**
     * Handles the {@link module:ol/MapBrowserEvent~MapBrowserEvent map browser event} if it was a
     * `KeyEvent`, and decides the direction to pan to (if an arrow key was
     * pressed).
     * @param {import("../MapBrowserEvent.js").default} mapBrowserEvent Map browser event.
     * @return {boolean} `false` to stop event propagation.
     * @this {KeyboardPan}
     */
    KeyboardPan.prototype.handleEvent = function (mapBrowserEvent) {
        var stopEvent = false;
        if (mapBrowserEvent.type == EventType.KEYDOWN) {
            var keyEvent = /** @type {KeyboardEvent} */ (mapBrowserEvent.originalEvent);
            var keyCode = keyEvent.keyCode;
            if (this.condition_(mapBrowserEvent) &&
                (keyCode == KeyCode.DOWN ||
                    keyCode == KeyCode.LEFT ||
                    keyCode == KeyCode.RIGHT ||
                    keyCode == KeyCode.UP)) {
                var map = mapBrowserEvent.map;
                var view = map.getView();
                var mapUnitsDelta = view.getResolution() * this.pixelDelta_;
                var deltaX = 0, deltaY = 0;
                if (keyCode == KeyCode.DOWN) {
                    deltaY = -mapUnitsDelta;
                }
                else if (keyCode == KeyCode.LEFT) {
                    deltaX = -mapUnitsDelta;
                }
                else if (keyCode == KeyCode.RIGHT) {
                    deltaX = mapUnitsDelta;
                }
                else {
                    deltaY = mapUnitsDelta;
                }
                var delta = [deltaX, deltaY];
                rotateCoordinate(delta, view.getRotation());
                pan(view, delta, this.duration_);
                keyEvent.preventDefault();
                stopEvent = true;
            }
        }
        return !stopEvent;
    };
    return KeyboardPan;
}(Interaction));
export default KeyboardPan;
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