Adds Show Branch History command

Renames Show Repository History to Show Current Branch History
Doesn't migrate data yet

src/commands/showQuickBranchHistory.ts

@@ -0,0 +1,75 @@
+'use strict';
+import { commands, TextEditor, Uri, window } from 'vscode';
+import { ActiveEditorCachedCommand, Commands } from '../commands';
+import { GitService, GitUri, IGitLog } from '../gitService';
+import { Logger } from '../logger';
+import { BranchesQuickPick, BranchHistoryQuickPick, CommandQuickPickItem } from '../quickPicks';
+
+export class ShowQuickBranchHistoryCommand extends ActiveEditorCachedCommand {
+
+    constructor(private git: GitService, private repoPath: string) {
+        super(Commands.ShowQuickBranchHistory);
+    }
+
+    async execute(editor: TextEditor, uri?: Uri, branch?: string, maxCount?: number, goBackCommand?: CommandQuickPickItem, log?: IGitLog, nextPageCommand?: CommandQuickPickItem) {
+        if (!(uri instanceof Uri)) {
+            uri = editor && editor.document && editor.document.uri;
+        }
+
+        const gitUri = uri && await GitUri.fromUri(uri, this.git);
+
+        if (maxCount == null) {
+            maxCount = this.git.config.advanced.maxQuickHistory;
+        }
+
+        let progressCancellation = branch && BranchHistoryQuickPick.showProgress(branch);
+        try {
+            const repoPath = (gitUri && gitUri.repoPath) || await this.git.getRepoPathFromUri(uri, this.repoPath);
+            if (!repoPath) return window.showWarningMessage(`Unable to show branch history`);
+
+            if (!branch) {
+                const branches = await this.git.getBranches(repoPath);
+
+                const pick = await BranchesQuickPick.show(branches, `pick a branch to show history`);
+                if (!pick) return undefined;
+
+                if (pick instanceof CommandQuickPickItem) {
+                    return pick.execute();
+                }
+
+                branch = pick.branch.name;
+                if (!branch) return undefined;
+
+                progressCancellation = BranchHistoryQuickPick.showProgress(branch);
+            }
+
+            if (!log) {
+                log = await this.git.getLogForRepo(repoPath, (gitUri && gitUri.sha) || branch, maxCount);
+                if (!log) return window.showWarningMessage(`Unable to show branch history`);
+            }
+
+            if (progressCancellation.token.isCancellationRequested) return undefined;
+
+            const pick = await BranchHistoryQuickPick.show(log, gitUri, branch, progressCancellation, goBackCommand, nextPageCommand);
+            if (!pick) return undefined;
+
+            if (pick instanceof CommandQuickPickItem) {
+                return pick.execute();
+            }
+
+            return commands.executeCommand(Commands.ShowQuickCommitDetails, new GitUri(pick.commit.uri, pick.commit), pick.commit.sha, pick.commit,
+                new CommandQuickPickItem({
+                    label: `go back \u21A9`,
+                    description: `\u00a0 \u2014 \u00a0\u00a0 to \u00a0$(git-branch) ${branch} history`
+                }, Commands.ShowQuickBranchHistory, [uri, branch, maxCount, goBackCommand, log]),
+                log);
+        }
+        catch (ex) {
+            Logger.error('[GitLens.ShowQuickBranchHistoryCommand]', ex);
+            return window.showErrorMessage(`Unable to show branch history. See output channel for more details`);
+        }
+        finally {
+            progressCancellation && progressCancellation.dispose();
+        }
+    }
+}