feat:get range text command

src/editor/core/command/Command.ts

@@ -68,6 +68,7 @@ export class Command {
   private static getImage: CommandAdapt['getImage']
   private static getValue: CommandAdapt['getValue']
   private static getWordCount: CommandAdapt['getWordCount']
+  private static getRangeText: CommandAdapt['getRangeText']
   private static pageMode: CommandAdapt['pageMode']
   private static pageScaleRecovery: CommandAdapt['pageScaleRecovery']
   private static pageScaleMinus: CommandAdapt['pageScaleMinus']
@@ -138,6 +139,7 @@ export class Command {
     Command.getImage = adapt.getImage.bind(adapt)
     Command.getValue = adapt.getValue.bind(adapt)
     Command.getWordCount = adapt.getWordCount.bind(adapt)
+    Command.getRangeText = adapt.getRangeText.bind(adapt)
     Command.pageMode = adapt.pageMode.bind(adapt)
     Command.pageScaleRecovery = adapt.pageScaleRecovery.bind(adapt)
     Command.pageScaleMinus = adapt.pageScaleMinus.bind(adapt)
@@ -389,6 +391,10 @@ export class Command {
     return Command.getWordCount()
   }
 
+  public getRangeText(): string {
+    return Command.getRangeText()
+  }
+
   // 页面模式、页面缩放、纸张大小、页边距
   public executePageMode(payload: PageMode) {
     return Command.pageMode(payload)

src/editor/core/command/CommandAdapt.ts

@@ -1400,6 +1400,10 @@ export class CommandAdapt {
     return this.workerManager.getWordCount()
   }
 
+  public getRangeText(): string {
+    return this.range.toString()
+  }
+
   public pageMode(payload: PageMode) {
     this.draw.setPageMode(payload)
   }

src/editor/core/range/RangeManager.ts

@@ -1,4 +1,5 @@
 import { ElementType } from '../..'
+import { ZERO } from '../../dataset/constant/Common'
 import { ControlComponent } from '../../dataset/enum/Control'
 import { IEditorOption } from '../../interface/Editor'
 import { IElement } from '../../interface/Element'
@@ -253,4 +254,12 @@ export class RangeManager {
     ctx.restore()
   }
 
+  public toString(): string {
+    const selection = this.getSelection()
+    if (!selection) return ''
+    return selection.map(s => s.value)
+      .join('')
+      .replace(new RegExp(ZERO, 'g'), '')
+  }
+
 }