7 files changed, 110 insertions, 7 deletions
diff --git a/src/background/controllers/OperationController.ts b/src/background/controllers/OperationController.ts
index 1e80f54..7233c0e 100644
--- a/src/background/controllers/OperationController.ts
+++ b/src/background/controllers/OperationController.ts
@@ -6,6 +6,7 @@ import TabUseCase from '../usecases/TabUseCase';
 import TabSelectUseCase from '../usecases/TabSelectUseCase';
 import ZoomUseCase from '../usecases/ZoomUseCase';
 import NavigateUseCase from '../usecases/NavigateUseCase';
+import RepeatUseCase from '../usecases/RepeatUseCase';
 
 @injectable()
 export default class OperationController {
@@ -16,11 +17,19 @@ export default class OperationController {
     private tabSelectUseCase: TabSelectUseCase,
     private zoomUseCase: ZoomUseCase,
     private navigateUseCase: NavigateUseCase,
+    private repeatUseCase: RepeatUseCase,
   ) {
   }
 
+  async exec(op: operations.Operation): Promise<any> {
+    await this.doOperation(op);
+    if (this.repeatUseCase.isRepeatable(op)) {
+      this.repeatUseCase.storeLastOperation(op);
+    }
+  }
+
   // eslint-disable-next-line complexity, max-lines-per-function
-  exec(operation: operations.Operation): Promise<any> {
+  doOperation(operation: operations.Operation): Promise<any> {
     switch (operation.type) {
     case operations.TAB_CLOSE:
       return this.tabUseCase.close(false);
@@ -88,6 +97,14 @@ export default class OperationController {
       return this.navigateUseCase.openParent();
     case operations.NAVIGATE_ROOT:
       return this.navigateUseCase.openRoot();
+    case operations.REPEAT_LAST:
+    {
+      let last = this.repeatUseCase.getLastOperation();
+      if (typeof last !== 'undefined') {
+        return this.doOperation(last);
+      }
+      return Promise.resolve();
+    }
     }
     throw new Error('unknown operation: ' + operation.type);
   }
diff --git a/src/background/repositories/RepeatRepository.ts b/src/background/repositories/RepeatRepository.ts
new file mode 100644
index 0000000..c7f7a71
--- /dev/null
+++ b/src/background/repositories/RepeatRepository.ts
@@ -0,0 +1,22 @@
+import { injectable } from 'tsyringe';
+import { Operation } from '../../shared/operations';
+import MemoryStorage from '../infrastructures/MemoryStorage';
+
+const REPEAT_KEY = 'repeat';
+
+@injectable()
+export default class RepeatRepository {
+  private cache: MemoryStorage;
+
+  constructor() {
+    this.cache = new MemoryStorage();
+  }
+
+  getLastOperation(): Operation | undefined {
+    return this.cache.get(REPEAT_KEY);
+  }
+
+  setLastOperation(op: Operation): void {
+    this.cache.set(REPEAT_KEY, op);
+  }
+}
diff --git a/src/background/usecases/RepeatUseCase.ts b/src/background/usecases/RepeatUseCase.ts
new file mode 100644
index 0000000..a005682
--- /dev/null
+++ b/src/background/usecases/RepeatUseCase.ts
@@ -0,0 +1,49 @@
+import { injectable } from 'tsyringe';
+import * as operations from '../../shared/operations';
+import RepeatRepository from '../repositories/RepeatRepository';
+
+type Operation = operations.Operation;
+
+@injectable()
+export default class RepeatUseCase {
+  constructor(
+    private repeatRepository: RepeatRepository,
+  ) {
+  }
+
+  storeLastOperation(op: Operation): void {
+    this.repeatRepository.setLastOperation(op);
+  }
+
+  getLastOperation(): operations.Operation | undefined {
+    return this.repeatRepository.getLastOperation();
+  }
+
+  // eslint-disable-next-line complexity
+  isRepeatable(op: Operation): boolean {
+    switch (op.type) {
+    case operations.NAVIGATE_HISTORY_PREV:
+    case operations.NAVIGATE_HISTORY_NEXT:
+    case operations.NAVIGATE_LINK_PREV:
+    case operations.NAVIGATE_LINK_NEXT:
+    case operations.NAVIGATE_PARENT:
+    case operations.NAVIGATE_ROOT:
+    case operations.PAGE_SOURCE:
+    case operations.PAGE_HOME:
+    case operations.TAB_CLOSE:
+    case operations.TAB_CLOSE_FORCE:
+    case operations.TAB_CLOSE_RIGHT:
+    case operations.TAB_REOPEN:
+    case operations.TAB_RELOAD:
+    case operations.TAB_PIN:
+    case operations.TAB_UNPIN:
+    case operations.TAB_TOGGLE_PINNED:
+    case operations.TAB_DUPLICATE:
+    case operations.ZOOM_IN:
+    case operations.ZOOM_OUT:
+    case operations.ZOOM_NEUTRAL:
+      return true;
+    }
+    return false;
+  }
+}
diff --git a/src/content/client/BackgroundClient.ts b/src/content/client/OperationClient.ts
index 4a41184..d699fec 100644
--- a/src/content/client/BackgroundClient.ts
+++ b/src/content/client/OperationClient.ts
@@ -1,9 +1,11 @@
-import { injectable } from 'tsyringe';
 import * as operations from '../../shared/operations';
 import * as messages from '../../shared/messages';
 
-@injectable()
-export default class BackgroundClient {
+export default interface OperationClient {
+  execBackgroundOp(op: operations.Operation): Promise<void>;
+}
+
+export class OperationClientImpl implements OperationClient {
   execBackgroundOp(op: operations.Operation): Promise<void> {
     return browser.runtime.sendMessage({
       type: messages.BACKGROUND_OPERATION,
diff --git a/src/content/controllers/KeymapController.ts b/src/content/controllers/KeymapController.ts
index 4eb6955..fcfaff1 100644
--- a/src/content/controllers/KeymapController.ts
+++ b/src/content/controllers/KeymapController.ts
@@ -6,7 +6,7 @@ import FindSlaveUseCase from '../usecases/FindSlaveUseCase';
 import ScrollUseCase from '../usecases/ScrollUseCase';
 import FocusUseCase from '../usecases/FocusUseCase';
 import ClipboardUseCase from '../usecases/ClipboardUseCase';
-import BackgroundClient from '../client/BackgroundClient';
+import OperationClient from '../client/OperationClient';
 import MarkKeyyUseCase from '../usecases/MarkKeyUseCase';
 import FollowMasterClient from '../client/FollowMasterClient';
 import Key from '../domains/Key';
@@ -20,9 +20,11 @@ export default class KeymapController {
     private scrollUseCase: ScrollUseCase,
     private focusUseCase: FocusUseCase,
     private clipbaordUseCase: ClipboardUseCase,
-    private backgroundClient: BackgroundClient,
     private markKeyUseCase: MarkKeyyUseCase,
 
+    @inject('OperationClient')
+    private backgroundClient: OperationClient,
+
     @inject('FollowMasterClient')
     private followMasterClient: FollowMasterClient,
   ) {
diff --git a/src/content/di.ts b/src/content/di.ts
index 23be027..e18806a 100644
--- a/src/content/di.ts
+++ b/src/content/di.ts
@@ -21,6 +21,7 @@ import { MarkClientImpl } from './client/MarkClient';
 import { MarkKeyRepositoryImpl } from './repositories/MarkKeyRepository';
 import { MarkRepositoryImpl } from './repositories/MarkRepository';
 import { NavigationPresenterImpl } from './presenters/NavigationPresenter';
+import { OperationClientImpl } from './client/OperationClient';
 import { ScrollPresenterImpl } from './presenters/ScrollPresenter';
 import { SettingClientImpl } from './client/SettingClient';
 import { SettingRepositoryImpl } from './repositories/SettingRepository';
@@ -48,6 +49,7 @@ container.register('MarkClient', { useClass: MarkClientImpl });
 container.register('MarkKeyRepository', { useClass: MarkKeyRepositoryImpl });
 container.register('MarkRepository', { useClass: MarkRepositoryImpl });
 container.register('NavigationPresenter', { useClass: NavigationPresenterImpl });
+container.register('OperationClient', { useClass: OperationClientImpl });
 container.register('ScrollPresenter', { useClass: ScrollPresenterImpl });
 container.register('SettingClient', { useClass: SettingClientImpl });
 container.register('SettingRepository', { useClass: SettingRepositoryImpl });
diff --git a/src/shared/operations.ts b/src/shared/operations.ts
index 688c240..0f0d0c0 100644
--- a/src/shared/operations.ts
+++ b/src/shared/operations.ts
@@ -75,6 +75,9 @@ export const FIND_PREV = 'find.prev';
 export const MARK_SET_PREFIX = 'mark.set.prefix';
 export const MARK_JUMP_PREFIX = 'mark.jump.prefix';
 
+// Repeat
+export const REPEAT_LAST = 'repeat.last';
+
 export interface CancelOperation {
   type: typeof CANCEL;
 }
@@ -291,6 +294,10 @@ export interface MarkJumpPrefixOperation {
   type: typeof MARK_JUMP_PREFIX;
 }
 
+export interface RepeatLastOperation {
+  type: typeof REPEAT_LAST;
+}
+
 export type Operation =
   CancelOperation |
   AddonEnableOperation |
@@ -342,7 +349,8 @@ export type Operation =
   FindNextOperation |
   FindPrevOperation |
   MarkSetPrefixOperation |
-  MarkJumpPrefixOperation;
+  MarkJumpPrefixOperation |
+  RepeatLastOperation;
 
 const assertOptionalBoolean = (obj: any, name: string) => {
   if (Object.prototype.hasOwnProperty.call(obj, name) &&
@@ -441,6 +449,7 @@ export const valueOf = (o: any): Operation => {
   case FIND_PREV:
   case MARK_SET_PREFIX:
   case MARK_JUMP_PREFIX:
+  case REPEAT_LAST:
     return { type: o.type };
   }
   throw new TypeError('unknown operation type: ' + o.type);