@arcgis/core/views/2d/input/handlers/KeyPan.js

ArcGIS Maps SDK for JavaScript: A complete 2D and 3D mapping and data visualization API

/*
All material copyright ESRI, All Rights Reserved, unless otherwise specified.
See https://js.arcgis.com/4.33/esri/copyright.txt for details.
*/
import{InputHandler as i}from"../../../input/InputHandler.js";import{onVisibilityChange as t}from"../../../input/VisibilityChange.js";class e extends i{constructor(i,e,s){super(!0),this.view=i,this.keys=e,this._isSticky=!1,this._pressedKeys=new Set,this._timeout=void 0,this._currentDirection=void 0,this._stickyKeyDuration=200,this._handleKey=i=>{const t=this._keyMap[i.data.key];if(i.modifiers.has("Meta")||i.modifiers.has("Control"))return void this._stopMovement();if(null==t)return;i.stopPropagation(),i.preventDefault();const e="key-down"===i.type;if(this._pressedKeys[e?"add":"delete"](t),e){if(this._direction===t)return;this._direction=t,this._isSticky=!1,this._setTimeout((()=>{this._isSticky&&this._handlePopKey()}))}else{const i=void 0===this._timeout,t=this._pressedKeys.size>0;i||t?this._handlePopKey():this._isSticky=!0}},this._handlePopKey=()=>{this._direction=Array.from(this._pressedKeys).pop(),null==this._direction&&this._stopMovement()},this._stopMovement=()=>{this._isSticky=!1,this._direction=void 0,this._pressedKeys.clear(),this._setTimeout(void 0)},this._keyMap={[e.left]:"left",[e.right]:"right",[e.up]:"up",[e.down]:"down"},this.registerIncoming("key-down",s,this._handleKey),this.registerIncoming("key-up",s,this._handleKey),this.registerIncoming("blur",s,this._stopMovement),this._visibilityHandle=t((i=>i?null:this._stopMovement()))}onUninstall(){this._stopMovement(),this._visibilityHandle?.remove()}get _direction(){return this._currentDirection}set _direction(i){const t=null!=this._currentDirection;if(null!=i){if(t||this.view.mapViewNavigation.begin(),this._currentDirection!==i)switch(i){case"left":this.view.mapViewNavigation.continuousPanLeft();break;case"right":this.view.mapViewNavigation.continuousPanRight();break;case"up":this.view.mapViewNavigation.continuousPanUp();break;case"down":this.view.mapViewNavigation.continuousPanDown()}}else t&&this.view.mapViewNavigation.stop();this._currentDirection=i}_setTimeout(i){clearTimeout(this._timeout),this._timeout=void 0===i?void 0:setTimeout((()=>{this._timeout=void 0,i()}),this._stickyKeyDuration)}}export{e as KeyPan};