fix: view provider returns correct minimap element (#781)

lib/main.js

@@ -11,6 +11,7 @@ import DOMStylesReader from "./dom-styles-reader"
 export { default as config } from "./config.json"
 export * from "./plugin-management"
 export { default as Minimap } from "./minimap"
+export { default as MinimapElement } from "./minimap-element"
 
 /**
  * The `Minimap` package provides an eagle-eye view of text buffers.
@@ -111,8 +112,11 @@ export function activate() {
  */
 export function minimapViewProvider(model) {
   if (model instanceof Minimap) {
-    const element = new MinimapElement()
-    element.setModel(model)
+    let element = model.getMinimapElement()
+    if (!element) {
+      element = new MinimapElement()
+      element.setModel(model)
+    }
     return element
   }
 }
@@ -397,7 +401,7 @@ function initSubscriptions() {
   subscriptions.add(
     atom.workspace.observeTextEditors((textEditor) => {
       const minimap = minimapForEditor(textEditor)
-      const minimapElement = minimap.getMinimapElement() || minimapViewProvider(minimap)
+      const minimapElement = minimapViewProvider(minimap)
 
       emitter.emit("did-create-minimap", minimap)
       minimapElement.attach(textEditor.getElement())

spec/minimap-main-spec.js

@@ -2,7 +2,7 @@
 process.env.NODE_ENV = "test"
 
 require("./helpers/workspace")
-const { Minimap } = require("../dist/main")
+const { Minimap, MinimapElement } = require("../dist/main")
 
 describe("Minimap package", () => {
   let [editor, minimap, editorElement, minimapElement, workspaceElement, minimapPackage] = []
@@ -49,6 +49,16 @@ describe("Minimap package", () => {
     expect(minimapElement).toExist()
   })
 
+  it("provider returns minimap.minimapElement", () => {
+    const textEditor = atom.workspace.buildTextEditor({})
+    minimap = new Minimap({ textEditor })
+    minimapElement = new MinimapElement()
+    minimapElement.setModel(minimap)
+    const minimapView = atom.views.getView(minimap)
+
+    expect(minimapView).toBe(minimapElement)
+  })
+
   describe("when an editor is opened", () => {
     it("creates a minimap model for the editor", () => {
       expect(minimapPackage.minimapForEditor(editor)).toBeDefined()