SCM - do not show "View Commit" or "View All Changes" action for empty commits (microsoft#203381)

Author: lszomoru

extensions/git/package.json

@@ -1851,14 +1851,14 @@
       "scm/incomingChanges/allChanges/context": [
         {
           "command": "git.viewAllChanges",
-          "when": "scmProvider == git && config.multiDiffEditor.experimental.enabled",
+          "when": "scmProvider == git && scmHistoryItemFileCount != 0 && config.multiDiffEditor.experimental.enabled",
           "group": "inline@1"
         }
       ],
       "scm/incomingChanges/historyItem/context": [
         {
           "command": "git.viewCommit",
-          "when": "scmProvider == git && config.multiDiffEditor.experimental.enabled",
+          "when": "scmProvider == git && scmHistoryItemFileCount != 0 && config.multiDiffEditor.experimental.enabled",
           "group": "inline@1"
         }
       ],
@@ -1872,14 +1872,14 @@
       "scm/outgoingChanges/allChanges/context": [
         {
           "command": "git.viewAllChanges",
-          "when": "scmProvider == git && config.multiDiffEditor.experimental.enabled",
+          "when": "scmProvider == git && scmHistoryItemFileCount != 0 && config.multiDiffEditor.experimental.enabled",
           "group": "inline@1"
         }
       ],
       "scm/outgoingChanges/historyItem/context": [
         {
           "command": "git.viewCommit",
-          "when": "scmProvider == git && config.multiDiffEditor.experimental.enabled",
+          "when": "scmProvider == git && scmHistoryItemFileCount != 0 && config.multiDiffEditor.experimental.enabled",
           "group": "inline@1"
         }
       ],

src/vs/workbench/contrib/scm/browser/menus.ts

@@ -293,7 +293,11 @@ export class SCMHistoryProviderMenus implements ISCMHistoryProviderMenus, IDispo
 					MenuId.SCMOutgoingChangesHistoryItemContext;
 			}
 
-			result = this.menuService.createMenu(menuId, this.contextKeyService);
+			const contextKeyService = this.contextKeyService.createOverlay([
+				['scmHistoryItemFileCount', historyItem.statistics?.files ?? 0],
+			]);
+
+			result = this.menuService.createMenu(menuId, contextKeyService);
 			this.historyItemMenus.set(historyItem, result);
 		}