Re #161. File decoration provider.

Author: rebornix

src/common/uri.ts

@@ -79,3 +79,25 @@ export function toPRUri(uri: Uri, pullRequestModel: IPullRequestModel, fileInRep
 	});
 }
 
+export interface FileChangeNodeUriParams {
+	hasComments?: boolean;
+}
+
+export function toFileChangeNodeUri(uri: Uri, hasComments: boolean) {
+	const params = {
+		hasComments: hasComments
+	}
+
+	return uri.with({
+		scheme: 'file',
+		query: JSON.stringify(params)
+	})
+}
+
+export function fromFileChangeNodeUri(uri: Uri): FileChangeNodeUriParams {
+	try {
+		return JSON.parse(uri.query) as FileChangeNodeUriParams;
+	} catch (e) {
+		return null;
+	}
+}

src/common/utils.ts

@@ -88,6 +88,9 @@ export function groupBy<T>(arr: T[], fn: (el: T) => string): { [key: string]: T[
 
 export function formatError(e: any): string {
 	if (!(e instanceof Error)) {
+		if (typeof e === 'string') {
+			return e;
+		}
 		return 'Error';
 	}
 

src/view/prsTreeDataProvider.ts

@@ -10,6 +10,7 @@ import { Repository } from '../common/repository';
 import { TreeNode } from './treeNodes/treeNode';
 import { PRCategoryActionNode, CategoryTreeNode, PRCategoryActionType } from './treeNodes/categoryNode';
 import { IPullRequestManager, PRType } from '../github/interface';
+import { fromFileChangeNodeUri } from '../common/uri';
 
 export class PullRequestsTreeDataProvider implements vscode.TreeDataProvider<TreeNode>, vscode.TextDocumentContentProvider, vscode.DecorationProvider, vscode.Disposable {
 	private _onDidChangeTreeData = new vscode.EventEmitter<TreeNode>();
@@ -74,15 +75,16 @@ export class PullRequestsTreeDataProvider implements vscode.TreeDataProvider<Tre
 	_onDidChangeDecorations: vscode.EventEmitter<vscode.Uri | vscode.Uri[]> = new vscode.EventEmitter<vscode.Uri | vscode.Uri[]>();
 	onDidChangeDecorations: vscode.Event<vscode.Uri | vscode.Uri[]> = this._onDidChangeDecorations.event;
 	provideDecoration(uri: vscode.Uri, token: vscode.CancellationToken): vscode.ProviderResult<vscode.DecorationData> {
-		if (uri.scheme === 'pr') {
+		let fileChangeUriParams = fromFileChangeNodeUri(uri);
+		if (fileChangeUriParams && fileChangeUriParams.hasComments) {
 			return {
 				bubble: true,
 				abbreviation: '♪♪',
 				title: '♪♪'
-			};
-		} else {
-			return {};
+			}
 		}
+
+		return {};
 	}
 
 	async provideTextDocumentContent(uri: vscode.Uri, token: vscode.CancellationToken): Promise<string> {

src/view/treeNodes/fileChangeNode.ts

@@ -11,6 +11,7 @@ import { IPullRequestModel } from '../../github/interface';
 import { TreeNode } from './treeNode';
 import { Comment } from '../../common/comment';
 import { getDiffLineByPosition, getZeroBased } from '../../common/diffPositionMapping';
+import { toFileChangeNodeUri } from '../../common/uri';
 
 export class RemoteFileChangeNode extends TreeNode implements vscode.TreeItem {
 	public label: string;
@@ -70,7 +71,8 @@ export class FileChangeNode extends TreeNode implements vscode.TreeItem {
 		} else {
 			this.iconPath = Resource.getFileStatusUri(this);
 		}
-		this.resourceUri = this.filePath;
+
+		this.resourceUri = toFileChangeNodeUri(this.filePath, comments.length > 0);
 
 		let opts: vscode.TextDocumentShowOptions = {
 			preserveFocus: true