Adopt CharSizeService in MouseHelper

src/ui/services/CharSizeService.ts

@@ -12,7 +12,7 @@ export class CharSizeService implements ICharSizeService {
   public height: number = 0;
   private _measureStrategy: IMeasureStrategy;
 
-  public get hasValidDimensions(): boolean { return this.width > 0 && this.height > 0; }
+  public get hasValidSize(): boolean { return this.width > 0 && this.height > 0; }
 
   private _onCharSizeChange = new EventEmitter2<string>();
   public get onCharSizeChange(): IEvent<string> { return this._onCharSizeChange.event; }

src/ui/services/Services.d.ts

@@ -8,7 +8,7 @@ import { IEvent } from 'common/EventEmitter2';
 export interface ICharSizeService {
   readonly width: number;
   readonly height: number;
-  readonly hasValidDimensions: boolean;
+  readonly hasValidSize: boolean;
 
   readonly onCharSizeChange: IEvent<string>;