/**
 * Popover弹出层，
 * @class BI.Popover
 * @extends BI.Widget
 */

import { Widget, shortcut } from "../../core";
@shortcut()
export default class Drawer extends Widget {
  SIZE = {
    SMALL: "small",
    NORMAL: "normal",
    BIG: "big",
  }
  props = {
      baseCls: "bi-drawer bi-card",
      size: "normal",
      placement: "right", //  top/bottom/left/right
      header: null,
      headerHeight: 40,
      body: null,
      closable: true, // BI-40839 是否显示右上角的关闭按钮
      bodyHgap: 20,
      bodyTgap: 10,
      bodyBgap: 10,
  }
  static xtype = "bi.drawer";
  static EVENT_CLOSE = "EVENT_CLOSE";
  static EVENT_OPEN = "EVENT_OPEN";
  _getSuitableSize() {
    const { size, height, placement, width  } = this.options;
    let sizeValue = 0;
    switch (size) {
        case "big":
          sizeValue = 736;
            break;
        case "small":
          sizeValue = 200;
            break;
        case "normal":
        default:
          sizeValue = 378;
            break;
    }
    if (placement === "top" || placement === "bottom") {
        return {
            height: height || sizeValue,
        };
    }
    if (placement === "left" || placement === "right") {
        return {
            width: width || sizeValue,
        };
    }
  }
  render() {
    const { header, headerHeight, closable, body, bodyHgap, bodyTgap, bodyBgap  } = this.options;
    const items = [{
        el: {
            type: "bi.htape",
            cls: "bi-message-title bi-header-background",
            items: [{
                type: "bi.absolute",
                items: [{
                    el: BI.isPlainObject(header) ? BI.extend({}, header, {
                        extraCls: "bi-font-bold",
                    }) : {
                        type: "bi.label",
                        cls: "bi-font-bold",
                        height: headerHeight,
                        text: header,
                        title: header,
                        textAlign: "left",
                    },
                    left: 20,
                    top: 0,
                    right: 0,
                    bottom: 0,
                }],
            }, {
                el: closable ? {
                    type: "bi.icon_button",
                    cls: "bi-message-close close-font",
                    height: headerHeight,
                    handler: ()=> {
                        this.close();
                    },
                } : {
                    type: "bi.layout",
                },
                width: 56,
            }],
            height: headerHeight,
        },
        height: headerHeight,
    }, {
        el: {
            type: "bi.vertical",
            scrolly: true,
            cls: "drawer-body",
            ref: (_ref)=> {
                this.body = _ref;
            },
            items: [{
                el: body,
            }],
        },
        hgap: bodyHgap,
        tgap: bodyTgap,
        bgap: bodyBgap,
    }];

    return BI.extend({
        type: "bi.vtape",
        items: items,
    }, this._getSuitableSize());
  }
  mounted() {
    const { placement } = this.options;
    switch (placement) {
        case "right":
            this.element.css({
                top: 0,
                left: "100%",
                bottom: 0,
            });
            break;
        case "left":
            this.element.css({
                top: 0,
                right: "100%",
                bottom: 0,
            });
            break;
        case "top":
            this.element.css({
                left: 0,
                right: 0,
                bottom: "100%",
            });
            break;
        case "bottom":
            this.element.css({
                left: 0,
                right: 0,
                top: "100%",
            });
            break;
        default:
            break;
    }
  }

  show(callback) {
    const { placement } = this.options;
    requestAnimationFrame(()=> {
        const size = this._getSuitableSize();
        switch (placement) {
            case "right":
                this.element.css({
                    left: "calc(100% - " + size.width + "px)",
                });
                break;
            case "left":
                this.element.css({
                    right: "calc(100% - " + size.width + "px)",
                });
                break;
            case "top":
                this.element.css({
                    bottom: "calc(100% - " + size.height + "px)",
                });
                break;
            case "bottom":
                this.element.css({
                    top: "calc(100% - " + size.height + "px)",
                });
                break;
            default:
                break;
        }
        callback && callback();
    });
  }

  hide(callback) {
    const { placement } = this.options;
    requestAnimationFrame(()=> {
        switch (placement) {
            case "right":
                this.element.css({
                    left: "100%",
                });
                break;
            case "left":
                this.element.css({
                    right: "100%",
                });
                break;
            case "top":
                this.element.css({
                    bottom: "100%",
                });
                break;
            case "bottom":
                this.element.css({
                    top: "100%",
                });
                break;
            default:
                break;
        }
        setTimeout(callback, 300);
    });
  }

  open() {
    this.show(()=> {
        this.fireEvent(Drawer.EVENT_OPEN);
    });
  }

  close() {
    this.hide(()=> {
      this.fireEvent(Drawer.EVENT_CLOSE);
    });
  }

  setZindex(zindex) {
      this.element.css({ "z-index": zindex });
  }

  destroyed() {
  }

}