Add history view, rework to use history status, remove old classes

Signed-off-by: Sanjula Ganepola <sanjulagane@gmail.com>

src/views/history/historyTreeDataProvider.ts

@@ -0,0 +1,59 @@
+import { CancellationToken, commands, EventEmitter, ExtensionContext, extensions, TreeDataProvider, TreeItem, workspace } from "vscode";
+import { act } from "../../extension";
+import { GithubLocalActionsTreeItem } from "../githubLocalActionsTreeItem";
+import HistoryTreeItem from "./history";
+
+export default class HistoryTreeDataProvider implements TreeDataProvider<GithubLocalActionsTreeItem> {
+    private _onDidChangeTreeData = new EventEmitter<GithubLocalActionsTreeItem | undefined | null | void>();
+    readonly onDidChangeTreeData = this._onDidChangeTreeData.event;
+    static VIEW_ID = 'history';
+
+    constructor(context: ExtensionContext) {
+        extensions.onDidChange(e => {
+            this.refresh();
+        });
+
+        context.subscriptions.push(
+            commands.registerCommand('githubLocalActions.refreshHistory', async () => {
+                this.refresh();
+            })
+        );
+    }
+
+    refresh(element?: GithubLocalActionsTreeItem) {
+        this._onDidChangeTreeData.fire(element);
+    }
+
+    getTreeItem(element: GithubLocalActionsTreeItem): GithubLocalActionsTreeItem | Thenable<GithubLocalActionsTreeItem> {
+        return element;
+    }
+
+    async resolveTreeItem(item: TreeItem, element: GithubLocalActionsTreeItem, token: CancellationToken): Promise<GithubLocalActionsTreeItem> {
+        if (element.getToolTip) {
+            element.tooltip = await element.getToolTip();
+        }
+
+        return element;
+    }
+
+    async getChildren(element?: GithubLocalActionsTreeItem): Promise<GithubLocalActionsTreeItem[]> {
+        if (element) {
+            return element.getChildren();
+        } else {
+            const items: GithubLocalActionsTreeItem[] = [];
+
+            const workspaceFolders = workspace.workspaceFolders;
+            if (workspaceFolders && workspaceFolders.length > 0) {
+                const workspaceHistory = act.workspaceHistory[workspaceFolders[0].uri.fsPath]; //TODO: Fix for multi workspace support
+                if (workspaceHistory) {
+                    for (const history of workspaceHistory) {
+                        items.push(new HistoryTreeItem(history));
+                    }
+                }
+            }
+
+            await commands.executeCommand('setContext', 'githubLocalActions:noHistory', items.length == 0);
+            return items;
+        }
+    }
+}