feat(gradle): link and unlink independent Gradle builds (#1413)

Opening a folder of independent Gradle builds selected only the first build. Link Gradle Projects… (pick a build's settings or build file) and Unlink on a build's root let an ordinary project window manage several independent builds without changing their scripts. The build model holds a list of Gradle builds; each keeps its own wrapper, working directory, environment, task routing and sync cache, keyed by the owning build directory. The links persist in the project's Gradle settings (linkedProjects); unlinking leaves files and saved run configurations alone. Existing includeBuild support is unchanged, and an explicitly linked build takes precedence over a composite that also includes it. Workspace windows keep Link/Unlink disabled.

Co-authored-by: gudcks0305 <[email protected]>

src/features/project-tree/index.ts

@@ -116,9 +116,13 @@ export function activate(): () => void {
     const paths = own ? validateProjectStructure(settings?.projectStructure).contentRoots : [];
     // The Build tool window's model (one load per build change), not a load of our own.
     const build = useBuildModel.getState();
-    const gradleProjects = build.root === project?.root ? (build.model?.gradle?.projects ?? []) : [];
-    const rootName = gradleProjects.find((p) => p.path === ":")?.name ?? "";
-    const groups = own && project ? gradleModuleGroups(gradleProjects, rootName, project.root) : [];
+    const gradleBuilds = build.root === project?.root ? (build.model?.gradle ?? []) : [];
+    const groups =
+      own && project
+        ? gradleBuilds.flatMap((g) =>
+            gradleModuleGroups(g.projects, g.projects.find((p) => p.path === ":")?.name ?? "", project.root, g.dir),
+          )
+        : [];
     const key = JSON.stringify([paths, groups]);
     if (key === shownRoots) return;
     shownRoots = key;

src/features/project-tree/moduleGroups.test.ts

@@ -123,3 +123,15 @@ describe("module group nodes in the tree", () => {
     expect(m.children.get(m.roots[0]!.key)!.map((n) => n.label)).toEqual(["billing", "core"]);
   });
 });
+
+it("namespaces module group identities by independently linked build", () => {
+  const projects = [
+    { path: ":", dir: "/w/first" },
+    { path: ":app", dir: "/w/shared" },
+  ];
+  const first = gradleModuleGroups(projects, "same", "/w/project", "first");
+  const second = gradleModuleGroups(projects, "same", "/w/project", "second");
+  expect(first.length).toBeGreaterThan(0);
+  expect(first[0]!.id).not.toBe(second[0]!.id);
+  expect(first.map(shape)).toEqual(second.map(shape));
+});

src/features/project-tree/moduleGroups.ts

@@ -29,7 +29,9 @@ export function gradleModuleGroups(
   projects: readonly { path: string; dir: string; build?: string | null }[],
   rootName: string,
   projectRoot: string,
+  buildDir?: string,
 ): ExtraRoot[] {
+  const identity = (name: string) => (buildDir === undefined ? name : JSON.stringify([buildDir, name]));
   const modules: Module[] = projects.map((p) => {
     const path = p.path.split(":").filter(Boolean);
     // An included build's modules are named after that build (`lib.core`); buildSrc and
@@ -51,7 +53,13 @@ export function gradleModuleGroups(
 
   const moduleNode = (m: Module): ExtraRoot => {
     const label = nameOf(m.dir) || m.dir;
-    return { id: m.name, label, detail: m.name === label ? undefined : m.name, icon: "gradle-module", path: m.dir };
+    return {
+      id: identity(m.name),
+      label,
+      detail: m.name === label ? undefined : m.name,
+      icon: "gradle-module",
+      path: m.dir,
+    };
   };
   // `modulesAndGroups`: ungrouped top-level modules as they are (the project folder is
   // shown anyway), one node for the common group path of the grouped ones.
@@ -82,7 +90,7 @@ export function gradleModuleGroups(
     const seen = new Set<string>();
     const moduleNodes = members.filter((m) => !seen.has(m.dir) && !!seen.add(m.dir)).map(moduleNode);
     return {
-      id: `gradleGroup:${group.join(".")}`,
+      id: identity(`gradleGroup:${group.join(".")}`),
       label: group[group.length - 1]!,
       icon: "gradle-project",
       children: [...[...childGroups.values()].map(node).sort(byLabel), ...moduleNodes.sort(byLabel)],