Defers command construction until later

Gets a properly constructed commit to improve performance of opening the diff

src/views/commitFileNode.ts

@@ -1,5 +1,5 @@
 'use strict';
-import { Command, ExtensionContext, TreeItem, TreeItemCollapsibleState } from 'vscode';
+import { ExtensionContext, TreeItem, TreeItemCollapsibleState } from 'vscode';
 import { Commands, DiffWithPreviousCommandArgs } from '../commands';
 import { ExplorerNode, ResourceType } from './explorerNode';
 import { GitCommit, GitService, GitUri, IGitStatusFile } from '../gitService';
@@ -7,18 +7,32 @@ import { GitCommit, GitService, GitUri, IGitStatusFile } from '../gitService';
 export class CommitFileNode extends ExplorerNode {
 
     readonly resourceType: ResourceType = 'commit-file';
-    command: Command;
 
     constructor(public status: IGitStatusFile, public commit: GitCommit, uri: GitUri, context: ExtensionContext, git: GitService) {
         super(uri, context, git);
+    }
 
-        this.command = {
+    getChildren(): Promise<ExplorerNode[]> {
+        return Promise.resolve([]);
+    }
+
+    async getTreeItem(): Promise<TreeItem> {
+        if (this.commit.type !== 'file') {
+            const log = await this.git.getLogForFile(this.commit.repoPath, this.status.fileName, this.commit.sha, { maxCount: 2 });
+            if (log !== undefined) {
+                this.commit = log.commits.get(this.commit.sha) || this.commit;
+            }
+        }
+
+        const item = new TreeItem(`${GitUri.getFormattedPath(this.status.fileName)}`, TreeItemCollapsibleState.None);
+        item.contextValue = this.resourceType;
+        item.command = {
             title: 'Compare File with Previous',
             command: Commands.DiffWithPrevious,
             arguments: [
                 GitUri.fromFileStatus(this.status, this.commit.repoPath),
                 {
-                    commit: commit,
+                    commit: this.commit,
                     showOptions: {
                         preserveFocus: true,
                         preview: true
@@ -26,16 +40,6 @@ export class CommitFileNode extends ExplorerNode {
                 } as DiffWithPreviousCommandArgs
             ]
         };
-    }
-
-    getChildren(): Promise<ExplorerNode[]> {
-        return Promise.resolve([]);
-    }
-
-    getTreeItem(): TreeItem {
-        const item = new TreeItem(`${GitUri.getFormattedPath(this.status.fileName)}`, TreeItemCollapsibleState.None);
-        item.contextValue = this.resourceType;
-        item.command = this.command;
         return item;
     }
 }

src/views/commitNode.ts

@@ -1,6 +1,6 @@
 'use strict';
 import { Iterables } from '../system';
-import { Command, ExtensionContext, TreeItem, TreeItemCollapsibleState } from 'vscode';
+import { ExtensionContext, TreeItem, TreeItemCollapsibleState } from 'vscode';
 import { CommitFileNode } from './commitFileNode';
 import { ExplorerNode, ResourceType } from './explorerNode';
 import { CommitFormatter, GitCommit, GitService, GitUri } from '../gitService';
@@ -8,25 +8,9 @@ import { CommitFormatter, GitCommit, GitService, GitUri } from '../gitService';
 export class CommitNode extends ExplorerNode {
 
     readonly resourceType: ResourceType = 'commit';
-    command: Command;
 
     constructor(public commit: GitCommit, uri: GitUri, context: ExtensionContext, git: GitService) {
         super(uri, context, git);
-
-        // this.command = {
-        //     title: 'Compare File with Previous',
-        //     command: Commands.DiffWithPrevious,
-        //     arguments: [
-        //         Uri.file(commit.uri.fsPath),
-        //         {
-        //             commit: commit,
-        //             showOptions: {
-        //                 preserveFocus: true,
-        //                 preview: true
-        //             }
-        //         } as DiffWithPreviousCommandArgs
-        //     ]
-        // };
     }
 
     async getChildren(): Promise<ExplorerNode[]> {
@@ -48,7 +32,6 @@ export class CommitNode extends ExplorerNode {
             dark: this.context.asAbsolutePath('images/dark/icon-commit.svg'),
             light: this.context.asAbsolutePath('images/light/icon-commit.svg')
         };
-        item.command = this.command;
         return item;
     }
 }

src/views/stashCommitNode.ts

@@ -1,5 +1,5 @@
 'use strict';
-import { Command, ExtensionContext, TreeItem, TreeItemCollapsibleState } from 'vscode';
+import { ExtensionContext, TreeItem, TreeItemCollapsibleState } from 'vscode';
 import { CommitFileNode } from './commitFileNode';
 import { ExplorerNode, ResourceType } from './explorerNode';
 import { CommitFormatter, GitService, GitStashCommit, GitUri } from '../gitService';
@@ -7,25 +7,12 @@ import { CommitFormatter, GitService, GitStashCommit, GitUri } from '../gitServi
 export class StashCommitNode extends ExplorerNode {
 
     readonly resourceType: ResourceType = 'stash-commit';
-    command: Command;
 
     constructor(public commit: GitStashCommit, uri: GitUri, context: ExtensionContext, git: GitService) {
         super(uri, context, git);
-
-        // this.command = {
-        //     title: 'Show Stash Details',
-        //     command: Commands.ShowQuickCommitDetails,
-        //     arguments: [
-        //         new GitUri(commit.uri, commit),
-        //         {
-        //             commit: commit,
-        //             sha: commit.sha
-        //         } as ShowQuickCommitDetailsCommandArgs
-        //     ]
-        // };
     }
 
-    getChildren(): Promise<CommitFileNode[]> {
+    async getChildren(): Promise<CommitFileNode[]> {
         return Promise.resolve((this.commit as GitStashCommit).fileStatuses.map(_ => new CommitFileNode(_, this.commit, this.uri, this.context, this.git)));
     }
 
@@ -34,7 +21,17 @@ export class StashCommitNode extends ExplorerNode {
 
         const item = new TreeItem(label, TreeItemCollapsibleState.Collapsed);
         item.contextValue = this.resourceType;
-        item.command = this.command;
+        // item.command = {
+        //     title: 'Show Stash Details',
+        //     command: Commands.ShowQuickCommitDetails,
+        //     arguments: [
+        //         new GitUri(commit.uri, commit),
+        //         {
+        //             commit: this.commit,
+        //             sha: this.commit.sha
+        //         } as ShowQuickCommitDetailsCommandArgs
+        //     ]
+        // };
         return item;
     }
 }