import { SGraphItem, SGraphView } from "@saga-web/graph/lib";
import { SMouseButton, SMouseEvent, SNetUtil } from "@saga-web/base/lib";
import { SPoint } from "@saga-web/draw/lib";

/**
 * 楼层场景
 *
 * @author  郝建龙
 */
export class FloorView extends SGraphView {
    /** 鼠标左键键按下时位置 */
    private _leftKeyPos = new SPoint();
    /** 空格是否被按下 */
    private spaceKey: boolean = false;

    /**
     * 保存底图json
     *
     * @param   name    文件名
     */
    saveFloorJson(name: string): void {
        // @ts-ignore
        if (!this.scene || !this.scene.json) return;
        // @ts-ignore
        let url = URL.createObjectURL(new Blob([this.scene.json]));
        SNetUtil.downLoad(name, url);
    } // Function saveSceneSvg()

    /**
     * 按键按下事件
     *
     * @param   event       事件参数
     */
    protected onKeyDown(event: KeyboardEvent): void {
        let keyCode = event.keyCode;
        this.spaceKey = false;
        switch (keyCode) {
            case 32:
                this.spaceKey = true;
                break;
            case 87:
                this.origin.y -= 10;
                break;
            case 83:
                this.origin.y += 10;
                break;
            case 68:
                this.origin.x += 10;
                break;
            case 65:
                this.origin.x -= 10;
                break;
            default:
                super.onKeyDown(event);
                break;
        }
        this.update();
    } // Function onKeyDown()

    /**
     * 按键松开事件
     *
     * @param   event       事件参数
     */
    protected onKeyUp(event: KeyboardEvent): void {
        this.spaceKey = false;
        super.onKeyUp(event);
    } // Function onKeyUp()

    /**
     * 鼠标按下事件
     *
     * @param   event       事件参数
     */
    protected onMouseDown(event: MouseEvent): void {
        ``
        let se = new SMouseEvent(event);
        if (se.buttons & SMouseButton.LeftButton) {
            this._leftKeyPos.x = se.x;
            this._leftKeyPos.y = se.y;
        }
        super.onMouseDown(event);
    } // Function onMouseDown()

    /**
     * 鼠标移动事件
     *
     * @param   event       事件参数
     */
    protected onMouseMove(event: MouseEvent): void {
        // 按左键移动
        let se = new SMouseEvent(event);
        if (se.buttons & SMouseButton.LeftButton) {
            if (this.spaceKey) {
                this.origin.x += se.x - this._leftKeyPos.x;
                this.origin.y += se.y - this._leftKeyPos.y;
            }
            this._leftKeyPos.x = se.x;
            this._leftKeyPos.y = se.y;
            this.update();
        }
        super.onMouseMove(event);
    } // Function onMouseMove()

    // 模拟双击事件
    tryDbclick() {
        const event = {
            altKey: false,
            buttons: 0,
            clientX: 574,
            clientY: 309,
            ctrlKey: false,
            screenX: 574,
            screenY: 412,
            type: "dblclick",
            x: 545767.790241906,
            y: 210014.18692875182,
        }
        this.onDoubleClick(event)
    }

} // Class FloorScene