change handlermanager to use Map to prevent garbage

src/ViewModel/Chat/chatViewModel.ts

@@ -173,7 +173,7 @@ export default class ChatViewModel extends ContextHost<ChatPageTypes> {
         );
 
         // handlers
-        chatModel.chatMessageHandlerManager.addHandler(
+        chatModel.chatMessageHandlerManager.setHandler(this.chatModel.id,
             (chatMessage: ChatMessage) => {
                 this.messagePageViewModel.showChatMessage(chatMessage);
                 this.updateReadStatus();
@@ -181,7 +181,7 @@ export default class ChatViewModel extends ContextHost<ChatPageTypes> {
                 this.notificationViewModel.showNotification(chatMessage);
             },
         );
-        chatModel.reactionHandlerManager.addHandler(
+        chatModel.reactionHandlerManager.setHandler(this.chatModel.id,
             (reaction: ChatMessageReaction) => {
                 this.messagePageViewModel.handleReaction(reaction);
             },

src/ViewModel/Global/connectionViewModel.ts

@@ -90,7 +90,8 @@ export default class ConnectionViewModel {
     constructor(public readonly coreViewModel: CoreViewModel) {
         this.updatePreviousAddresses();
 
-        coreViewModel.connectionModel.connectionChangeHandlerManager.addHandler(
+        coreViewModel.connectionModel.connectionChangeHandlerManager.setHandler(
+            "connection-view-model",
             this.connectionChangeHandler,
         );
     }

src/ViewModel/Global/coreViewModel.ts

@@ -100,7 +100,8 @@ export class Context {
         this.keystrokes.set(key, fn);
     };
 
-    constructor(public contextDebugDescription: string) {}
+    constructor(public contextDebugDescription: string) {
+    }
 }
 
 export class ContextHost<T> extends Context {

src/ViewModel/Global/fileTransferViewModel.ts

@@ -173,11 +173,11 @@ export default class FileTransferViewModel extends Context {
     constructor(public readonly coreViewModel: CoreViewModel) {
         super("file-transfer");
 
-        this.coreViewModel.fileTransferModel.fileHandlerManager.addHandler(
+        this.coreViewModel.fileTransferModel.fileHandlerManager.setHandler("file-transfer-view-model",
             this.handleReceivedFile,
         );
 
-        this.coreViewModel.fileTransferModel.readyToSendHandlerManager.addHandler(
+        this.coreViewModel.fileTransferModel.readyToSendHandlerManager.setHandler("file-transfer-view-model",
             () => this.initiateTransfer(),
         );
 

src/ViewModel/Pages/boardViewModel.ts

@@ -278,7 +278,7 @@ export default class BoardViewModel extends TaskContainingPageViewModel {
         });
 
         // handlers
-        boardsAndTasksModel.taskHandlerManager.addHandler(
+        boardsAndTasksModel.taskHandlerManager.setHandler(this.boardInfo.fileId,
             (taskFileContent: TaskFileContent) => {
                 if (taskFileContent.boardId != this.boardInfo.fileId) return;
                 this.showTask(taskFileContent);

src/ViewModel/Pages/calendarPageViewModel.ts

@@ -200,7 +200,7 @@ export default class CalendarPageViewModel extends TaskContainingPageViewModel {
         });
 
         // handlers
-        boardsAndTasksModel.taskHandlerManager.addHandler(
+        boardsAndTasksModel.taskHandlerManager.setHandler("calendar" + this.chatViewModel.chatModel.id,
             (taskFileContent: TaskFileContent) => {
                 this.showTask(taskFileContent);
             },

src/ViewModel/Pages/taskPageViewModel.ts

@@ -175,7 +175,7 @@ export default class TaskPageViewModel extends ContextHost<string> {
         this.selectedBoardId.subscribeSilent(this.updateContexts);
 
         // handlers
-        boardsAndTasksModel.boardHandlerManager.addHandler(
+        boardsAndTasksModel.boardHandlerManager.setHandler("task-page" + this.chatViewModel.chatModel.id,
             (boardInfoFileContent: BoardInfoFileContent) => {
                 this.showBoardInList(boardInfoFileContent);
                 this.updateBoardIndices();