Changes shortcut keys for diff with previous commands

Adds diff with next command
Fixes #45 - Keyboard Shortcut collision with Project Manager
Preps v2.11.2

src/commands/diffWithNext.ts

@@ -0,0 +1,74 @@
+'use strict';
+import { Iterables } from '../system';
+import { commands, Range, TextEditor, Uri, window } from 'vscode';
+import { ActiveEditorCommand, Commands } from './commands';
+import { BuiltInCommands } from '../constants';
+import { GitLogCommit, GitProvider, GitUri } from '../gitProvider';
+import { Logger } from '../logger';
+// import * as moment from 'moment';
+import * as path from 'path';
+
+export class DiffWithNextCommand extends ActiveEditorCommand {
+
+    constructor(private git: GitProvider) {
+        super(Commands.DiffWithNext);
+    }
+
+    async execute(editor: TextEditor): Promise<any>;
+    async execute(editor: TextEditor, uri: Uri): Promise<any>;
+    async execute(editor: TextEditor, uri: Uri, commit: GitLogCommit, range?: Range): Promise<any>;
+    async execute(editor: TextEditor, uri: Uri, commit: GitLogCommit, line?: number): Promise<any>;
+    async execute(editor: TextEditor, uri?: Uri, commit?: GitLogCommit, rangeOrLine?: Range | number): Promise<any> {
+        if (!(uri instanceof Uri)) {
+            if (!editor || !editor.document) return undefined;
+            uri = editor.document.uri;
+        }
+
+        let line = (editor && editor.selection.active.line) || 0;
+        if (typeof rangeOrLine === 'number') {
+            line = rangeOrLine || line;
+            rangeOrLine = undefined;
+        }
+
+        if (!commit || !(commit instanceof GitLogCommit) || rangeOrLine instanceof Range) {
+            const gitUri = await GitUri.fromUri(uri, this.git);
+
+            try {
+                if (!gitUri.sha) {
+                    // If the file is uncommitted, treat it as a DiffWithWorking
+                    if (await this.git.isFileUncommitted(gitUri.fsPath, gitUri.repoPath)) {
+                        return commands.executeCommand(Commands.DiffWithWorking, uri);
+                    }
+                }
+
+                const sha = (commit && commit.sha) || gitUri.sha;
+
+                const log = await this.git.getLogForFile(gitUri.fsPath, undefined, gitUri.repoPath, rangeOrLine as Range, sha ? undefined : 2);
+                if (!log) return window.showWarningMessage(`Unable to open diff. File is probably not under source control`);
+
+                commit = (sha && log.commits.get(sha)) || Iterables.first(log.commits.values());
+            }
+            catch (ex) {
+                Logger.error('[GitLens.DiffWithNextCommand]', `getLogForFile(${gitUri.fsPath})`, ex);
+                return window.showErrorMessage(`Unable to open diff. See output channel for more details`);
+            }
+        }
+
+        if (!commit.nextSha) {
+            return commands.executeCommand(Commands.DiffWithWorking, uri);
+        }
+
+        try {
+            const [rhs, lhs] = await Promise.all([
+                this.git.getVersionedFile(commit.nextUri.fsPath, commit.repoPath, commit.nextSha),
+                this.git.getVersionedFile(commit.uri.fsPath, commit.repoPath, commit.sha)
+            ]);
+            await commands.executeCommand(BuiltInCommands.Diff, Uri.file(lhs), Uri.file(rhs), `${path.basename(commit.uri.fsPath)} (${commit.sha}) ↔ ${path.basename(commit.nextUri.fsPath)} (${commit.nextSha})`);
+            return await commands.executeCommand(BuiltInCommands.RevealLine, { lineNumber: line, at: 'center' });
+        }
+        catch (ex) {
+            Logger.error('[GitLens.DiffWithNextCommand]', 'getVersionedFile', ex);
+            return window.showErrorMessage(`Unable to open diff. See output channel for more details`);
+        }
+    }
+}