Class HistoryEle

命令历史记录组件类 - 用于显示CAD系统的命令执行历史

这个组件负责显示用户输入的命令和系统响应的历史记录。支持自动滚动、内容限制、取消操作显示等功能。

主要功能：

显示命令执行历史记录
自动滚动到最新内容
限制历史记录条数（防止内存溢出）
支持清空历史记录
支持取消操作的特殊显示
支持文件拖放操作

HistoryEle

Hierarchy (View Summary)

LitElement
- HistoryEle

Constructors

constructor

new HistoryEle(): HistoryEle
构造函数 - 初始化历史记录组件

Returns HistoryEle
Overrides LitElement.constructor
- Defined in ui/CommandLine.ts:81

Properties

`Static`styles

styles: r[] = ...

定义组件样式 - 使用 Lit 官方推荐的静态属性写法

CANCELTEXT

CANCELTEXT: string

reader

reader: FileReader

hist

hist: HTMLDivElement = null

container

container: HTMLDivElement = null

dropEle

dropEle: HTMLElement = null

_isMouseOver

_isMouseOver: boolean = false

renderRoot

renderRoot: any

Accessors

`Static`observedAttributes

get observedAttributes(): any[]
Returns any[]
Inherited from LitElement.observedAttributes
- Defined in vendor/lit-element-base.ts:103

updateComplete

get updateComplete(): any
Returns any
Inherited from LitElement.updateComplete
- Defined in vendor/lit-element-base.ts:306

Methods

connectedCallback

connectedCallback(): void
Returns void
Overrides LitElement.connectedCallback
- Defined in ui/CommandLine.ts:87

disconnectedCallback

disconnectedCallback(): void
Returns void
Overrides LitElement.disconnectedCallback
- Defined in ui/CommandLine.ts:93

firstUpdated

firstUpdated(): void
首次更新完成后的回调在组件首次渲染完成后调用，重新初始化文件读取器并查询DOM元素

Returns void
Overrides LitElement.firstUpdated
- Defined in ui/CommandLine.ts:111

clearHist

clearHist(): void
清空历史记录

清除历史记录显示区域的所有内容

Returns void
- Defined in ui/CommandLine.ts:124

write

write(content: string): void
写入内容到历史记录

将新内容追加到历史记录的末尾，并进行内容长度控制。自动滚动到底部以显示最新内容。
Parameters
- content: string
  要写入的内容（支持HTML格式）
Returns void
- Defined in ui/CommandLine.ts:136

trimSplitBr

trimSplitBr(htmlContent: string): string
修剪历史记录内容

当历史记录行数超过限制时，保留最新的100行，删除较旧的内容。这样可以防止历史记录过长导致的性能问题。
Parameters
- htmlContent: string
  原始HTML内容
Returns string
修剪后的HTML内容
- Defined in ui/CommandLine.ts:153

writeLine

writeLine(lineContent: string): void
写入一行内容到历史记录

在内容前添加换行符，然后写入历史记录
Parameters
- lineContent: string
  要写入的行内容
Returns void
- Defined in ui/CommandLine.ts:168

histCancelText

histCancelText(): void
显示取消操作文本

在历史记录中显示取消操作的特殊文本，用于向用户反馈操作已被取消。

Returns void
- Defined in ui/CommandLine.ts:178

histScrollBottom

histScrollBottom(): void
滚动到历史记录底部

自动滚动容器到底部，确保用户能看到最新的内容

Returns void
- Defined in ui/CommandLine.ts:189

getHistStr

getHistStr(): string
获取历史记录的HTML字符串

Returns string
历史记录的完整HTML内容，如果历史记录元素不存在则返回空字符串
- Defined in ui/CommandLine.ts:198

render

render(): { _$litType$: any; strings: any; values: any[] }
渲染组件的HTML模板

创建包含历史记录显示区域的HTML结构。容器具有"drop"类，支持文件拖放操作。

Returns { _$litType$: any; strings: any; values: any[] }
HTML模板结果
Overrides LitElement.render
- Defined in ui/CommandLine.ts:210

`Static`addInitializer

addInitializer(t: any): void
Parameters
- t: any
Returns void
Inherited from LitElement.addInitializer
- Defined in vendor/lit-element-base.ts:100

`Static`createProperty

createProperty(
    t: any,
    e?: {
        attribute: boolean;
        type: StringConstructor;
        converter: {
            toAttribute(t: any, e: any): any;
            fromAttribute(t: any, e: any): any;
        };
        reflect: boolean;
        hasChanged: (t: any, e: any) => boolean;
    },
): void
Parameters
- t: any
- e: {
      attribute: boolean;
      type: StringConstructor;
      converter: {
          toAttribute(t: any, e: any): any;
          fromAttribute(t: any, e: any): any;
      };
      reflect: boolean;
      hasChanged: (t: any, e: any) => boolean;
  } = y
Returns void
Inherited from LitElement.createProperty
- Defined in vendor/lit-element-base.ts:106

`Static`getPropertyDescriptor

getPropertyDescriptor(
    t: any,
    e: any,
    s: any,
): {
    get(): any;
    set(e: any): void;
    configurable: boolean;
    enumerable: boolean;
}
Parameters
- t: any
- e: any
- s: any
Returns { get(): any; set(e: any): void; configurable: boolean; enumerable: boolean }
Inherited from LitElement.getPropertyDescriptor
- Defined in vendor/lit-element-base.ts:113

`Static`getPropertyOptions

getPropertyOptions(t: any): any
Parameters
- t: any
Returns any
Inherited from LitElement.getPropertyOptions
- Defined in vendor/lit-element-base.ts:137

`Static`_$Ei

_$Ei(): void
Returns void
Inherited from LitElement._$Ei
- Defined in vendor/lit-element-base.ts:140

`Static`finalize

finalize(): void
Returns void
Inherited from LitElement.finalize
- Defined in vendor/lit-element-base.ts:145

`Static`finalizeStyles

finalizeStyles(t: any): any[]
Parameters
- t: any
Returns any[]
Inherited from LitElement.finalizeStyles
- Defined in vendor/lit-element-base.ts:165

`Static`_$Eu

_$Eu(t: any, e: any): string
Parameters
- t: any
- e: any
Returns string
Inherited from LitElement._$Eu
- Defined in vendor/lit-element-base.ts:173

_$Ev

_$Ev(): void
Returns void
Inherited from LitElement._$Ev
- Defined in vendor/lit-element-base.ts:180

addController

addController(t: any): void
Parameters
- t: any
Returns void
Inherited from LitElement.addController
- Defined in vendor/lit-element-base.ts:184

removeController

removeController(t: any): void
Parameters
- t: any
Returns void
Inherited from LitElement.removeController
- Defined in vendor/lit-element-base.ts:188

_$E_

_$E_(): void
Returns void
Inherited from LitElement._$E_
- Defined in vendor/lit-element-base.ts:192

enableUpdating

enableUpdating(t: any): void
Parameters
- t: any
Returns void
Inherited from LitElement.enableUpdating
- Defined in vendor/lit-element-base.ts:217

attributeChangedCallback

attributeChangedCallback(t: any, e: any, s: any): void
Parameters
- t: any
- e: any
- s: any
Returns void
Inherited from LitElement.attributeChangedCallback
- Defined in vendor/lit-element-base.ts:225

_$EC

_$EC(t: any, e: any): void
Parameters
- t: any
- e: any
Returns void
Inherited from LitElement._$EC
- Defined in vendor/lit-element-base.ts:228

_$AK

_$AK(t: any, e: any): void
Parameters
- t: any
- e: any
Returns void
Inherited from LitElement._$AK
- Defined in vendor/lit-element-base.ts:237

requestUpdate

requestUpdate(t?: any, e?: any, s?: any): void
Parameters
- Optionalt: any
- Optionale: any
- Optionals: any
Returns void
Inherited from LitElement.requestUpdate
- Defined in vendor/lit-element-base.ts:249

P

P(t: any, e: any, s: any): void
Parameters
- t: any
- e: any
- s: any
Returns void
Inherited from LitElement.P
- Defined in vendor/lit-element-base.ts:255

_$ET

_$ET(): Promise<boolean>
Returns Promise<boolean>
Inherited from LitElement._$ET
- Defined in vendor/lit-element-base.ts:258

scheduleUpdate

scheduleUpdate(): void
Returns void
Inherited from LitElement.scheduleUpdate
- Defined in vendor/lit-element-base.ts:268

performUpdate

performUpdate(): void
Returns void
Inherited from LitElement.performUpdate
- Defined in vendor/lit-element-base.ts:271

willUpdate

willUpdate(t: any): void
Parameters
- t: any
Returns void
Inherited from LitElement.willUpdate
- Defined in vendor/lit-element-base.ts:295

_$AE

_$AE(t: any): void
Parameters
- t: any
Returns void
Inherited from LitElement._$AE
- Defined in vendor/lit-element-base.ts:296

_$EU

_$EU(): void
Returns void
Inherited from LitElement._$EU
- Defined in vendor/lit-element-base.ts:303

getUpdateComplete

getUpdateComplete(): any
Returns any
Inherited from LitElement.getUpdateComplete
- Defined in vendor/lit-element-base.ts:309

shouldUpdate

shouldUpdate(t: any): boolean
Parameters
- t: any
Returns boolean
Inherited from LitElement.shouldUpdate
- Defined in vendor/lit-element-base.ts:312

updated

updated(t: any): void
Parameters
- t: any
Returns void
Inherited from LitElement.updated
- Defined in vendor/lit-element-base.ts:318

createRenderRoot

createRenderRoot(): ShadowRoot
Returns ShadowRoot
Inherited from LitElement.createRenderRoot
- Defined in vendor/lit-element-base.ts:640

update

update(t: any): void
Parameters
- t: any
Returns void
Inherited from LitElement.update
- Defined in vendor/lit-element-base.ts:645