Add IBuffer, IBufferSet and fix CircularList type

src/Buffer.ts

@@ -13,7 +13,7 @@ import { CircularList } from './utils/CircularList';
  *   - scroll position
  */
 export class Buffer {
-  public lines: CircularList<[string, number, string]>;
+  public lines: CircularList<[number, string, number][]>;
 
   /**
    * Create a new Buffer.
@@ -33,7 +33,7 @@ export class Buffer {
     public scrollTop: number = 0,
     public tabs: any = {},
   ) {
-    this.lines = new CircularList<[string, number, string]>(this.terminal.scrollback);
+    this.lines = new CircularList<[number, string, number][]>(this.terminal.scrollback);
     this.scrollBottom = this.terminal.rows - 1;
   }
 }

src/BufferSet.ts

@@ -2,7 +2,7 @@
  * @license MIT
  */
 
-import { ITerminal } from './Interfaces';
+import { ITerminal, IBufferSet } from './Interfaces';
 import { Buffer } from './Buffer';
 import { EventEmitter } from './EventEmitter';
 
@@ -10,7 +10,7 @@ import { EventEmitter } from './EventEmitter';
  * The BufferSet represents the set of two buffers used by xterm terminals (normal and alt) and
  * provides also utilities for working with them.
  */
-export class BufferSet extends EventEmitter {
+export class BufferSet extends EventEmitter implements IBufferSet {
   private _normal: Buffer;
   private _alt: Buffer;
   private _activeBuffer: Buffer;

src/EventEmitter.ts

@@ -2,12 +2,14 @@
  * @license MIT
  */
 
+import { IEventEmitter } from './Interfaces';
+
 interface ListenerType {
     (): void;
     listener?: () => void;
 };
 
-export class EventEmitter {
+export class EventEmitter implements IEventEmitter {
   private _events: {[type: string]: ListenerType[]};
 
   constructor() {

src/Interfaces.ts

@@ -33,9 +33,8 @@ export interface ITerminal {
   cursorState: number;
   defAttr: number;
   scrollback: number;
-  buffers: any;  // This should be a `BufferSet` class, but it would result in circular dependency
-  buffer: any;  // This should be a `Buffer` class, but it would result in circular dependency
-  viewport: any;  // This should be a `Viewport` class, but it would result in circular dependency
+  buffers: IBufferSet;
+  buffer: IBuffer;
 
   /**
    * Emit the 'data' event and populate the given data.
@@ -51,6 +50,24 @@ export interface ITerminal {
   showCursor(): void;
 }
 
+export interface IBuffer {
+  lines: ICircularList<[number, string, number][]>;
+  ydisp: number;
+  ybase: number;
+  y: number;
+  x: number;
+  tabs: any;
+}
+
+export interface IBufferSet {
+  alt: IBuffer;
+  normal: IBuffer;
+  active: IBuffer;
+
+  activateNormalBuffer(): void;
+  activateAltBuffer(): void;
+}
+
 export interface ISelectionManager {
   selectionText: string;
   selectionStart: [number, number];
@@ -72,7 +89,7 @@ export interface ILinkifier {
   deregisterLinkMatcher(matcherId: number): boolean;
 }
 
-interface ICircularList<T> {
+export interface ICircularList<T> extends IEventEmitter {
   length: number;
   maxLength: number;
 
@@ -86,6 +103,11 @@ interface ICircularList<T> {
   shiftElements(start: number, count: number, offset: number): void;
 }
 
+export interface IEventEmitter {
+  on(type, listener): void;
+  off(type, listener): void;
+}
+
 export interface LinkMatcherOptions {
   /**
    * The index of the link from the regex.match(text) call. This defaults to 0

src/SelectionManager.test.ts

@@ -3,7 +3,7 @@
  */
 import jsdom = require('jsdom');
 import { assert } from 'chai';
-import { ITerminal } from './Interfaces';
+import { ITerminal, ICircularList } from './Interfaces';
 import { CharMeasure } from './utils/CharMeasure';
 import { CircularList } from './utils/CircularList';
 import { SelectionManager } from './SelectionManager';
@@ -13,7 +13,7 @@ import { BufferSet } from './BufferSet';
 class TestSelectionManager extends SelectionManager {
   constructor(
     terminal: ITerminal,
-    buffer: CircularList<any>,
+    buffer: ICircularList<[number, string, number][]>,
     rowContainer: HTMLElement,
     charMeasure: CharMeasure
   ) {
@@ -37,7 +37,7 @@ describe('SelectionManager', () => {
   let document: Document;
 
   let terminal: ITerminal;
-  let bufferLines: CircularList<any>;
+  let bufferLines: ICircularList<[number, string, number][]>;
   let rowContainer: HTMLElement;
   let selectionManager: TestSelectionManager;
 

src/SelectionManager.ts

@@ -7,7 +7,7 @@ import * as Browser from './utils/Browser';
 import { CharMeasure } from './utils/CharMeasure';
 import { CircularList } from './utils/CircularList';
 import { EventEmitter } from './EventEmitter';
-import { ITerminal } from './Interfaces';
+import { ITerminal, ICircularList } from './Interfaces';
 import { SelectionModel } from './SelectionModel';
 import { translateBufferLineToString } from './utils/BufferLine';
 
@@ -98,7 +98,7 @@ export class SelectionManager extends EventEmitter {
 
   constructor(
     private _terminal: ITerminal,
-    private _buffer: CircularList<any>,
+    private _buffer: ICircularList<[number, string, number][]>,
     private _rowContainer: HTMLElement,
     private _charMeasure: CharMeasure
   ) {
@@ -147,7 +147,7 @@ export class SelectionManager extends EventEmitter {
    * switched in or out.
    * @param buffer The active buffer.
    */
-  public setBuffer(buffer: CircularList<any>): void {
+  public setBuffer(buffer: ICircularList<[number, string, number][]>): void {
     this._buffer = buffer;
     this.clearSelection();
   }
@@ -186,7 +186,7 @@ export class SelectionManager extends EventEmitter {
     for (let i = start[1] + 1; i <= end[1] - 1; i++) {
       const bufferLine = this._buffer.get(i);
       const lineText = translateBufferLineToString(bufferLine, true);
-      if (bufferLine.isWrapped) {
+      if ((<any>bufferLine).isWrapped) {
         result[result.length - 1] += lineText;
       } else {
         result.push(lineText);
@@ -197,7 +197,7 @@ export class SelectionManager extends EventEmitter {
     if (start[1] !== end[1]) {
       const bufferLine = this._buffer.get(end[1]);
       const lineText = translateBufferLineToString(bufferLine, true, 0, end[0]);
-      if (bufferLine.isWrapped) {
+      if ((<any>bufferLine).isWrapped) {
         result[result.length - 1] += lineText;
       } else {
         result.push(lineText);