src/goImpl: use quickpick description and handle symbol with .

If user searches with 'io.Reader' for more specific workspace
symbol search, the new interface returns 'io.Reader' as the
symbol name. Passing it to impl as it is will cause an error.
Use only the part after '.' as a heuristic.

Change-Id: I7935ad9ef59be50db0bc09890b9532c8e0ba32b6

src/goImpl.ts

@@ -17,15 +17,15 @@ import vscode = require('vscode');
 
 class InterfaceItem implements vscode.QuickPickItem {
 	public label: string;
+	public description: string;
 	public name: string;
 	public package: string;
-	public location: vscode.Location;
 
-	constructor(public symbol: vscode.SymbolInformation) {
-		this.label = symbol.name + ' ' + symbol.containerName;
-		this.name = symbol.name;
+	constructor(symbol: vscode.SymbolInformation) {
+		this.label = symbol.name;
+		this.description = symbol.containerName;
+		this.name = symbol.name.split('.').pop(); // in case, symbol contains package name.
 		this.package = symbol.containerName;
-		this.location = symbol.location;
 	}
 }
 
@@ -37,7 +37,7 @@ export function implCursor() {
 	}
 	const cursor = editor.selection;
 	const quickPick = vscode.window.createQuickPick();
-	quickPick.placeholder = 'Input interface name (e.g. client)';
+	quickPick.placeholder = 'Input interface name (e.g. Client)';
 
 	const search = function (keyword: string) {
 		quickPick.busy = true;