Merge pull request #131 from atom-community/fix-datatip-not-showing

.eslintrc.json

@@ -1,8 +1,4 @@
 {
-  "extends": "eslint-config-atomic/react",
-  "ignorePatterns": ["dist/", "node_modules/"],
-  "rules": {
-    "@typescript-eslint/no-inferrable-types": "off",
-    "@typescript-eslint/no-non-null-assertion": "off"
-  }
+  "extends": "eslint-config-atomic/strict-react",
+  "ignorePatterns": ["dist/", "node_modules/"]
 }

lib/datatip-manager.ts

@@ -176,9 +176,7 @@ export class DataTipManager {
 
     return new Disposable(() => {
       disposable.dispose()
-      if (this.subscriptions != null) {
-        this.subscriptions.remove(disposable)
-      }
+      this.subscriptions.remove(disposable)
       this.watchedEditors.delete(editor)
     })
   }
@@ -202,7 +200,7 @@ export class DataTipManager {
     this.editor = null
     this.editorView = null
 
-    if (editor == null || !atom.workspace.isTextEditor(editor)) {
+    if (editor === null || !atom.workspace.isTextEditor(editor)) {
       return
     }
 
@@ -234,7 +232,7 @@ export class DataTipManager {
    * the central cursor movement event handler
    * @param evt the cursor move event
    */
-  onCursorMoveEvt(evt: CursorPositionChangedEvent) {
+  onCursorMoveEvt(event: CursorPositionChangedEvent) {
     if (this.cursorMoveTimer) {
       clearTimeout(this.cursorMoveTimer)
     }
@@ -251,21 +249,21 @@ export class DataTipManager {
         }
       },
       this.hoverTime,
-      evt
+      event
     )
   }
 
   /**
    * the central mouse movement event handler
    */
-  onMouseMoveEvt(evt: MouseEvent) {
+  onMouseMoveEvt(event: MouseEvent) {
     if (this.mouseMoveTimer) {
       clearTimeout(this.mouseMoveTimer)
     }
 
     this.mouseMoveTimer = setTimeout(
       (evt) => {
-        if (this.editorView == null || this.editor == null) {
+        if (this.editorView === null || this.editor === null) {
           return
         }
 
@@ -284,6 +282,7 @@ export class DataTipManager {
         // means the mouse event occured quite far away from where the text ends on that row. Do not
         // show the datatip in such situations and hide any existing datatips (the mouse moved more to
         // the right, away from the actual text)
+        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
         // @ts-ignore: internal API
         if (distance >= this.editor.getDefaultCharWidth()) {
           return this.unmountDataTip()
@@ -295,18 +294,10 @@ export class DataTipManager {
         }
       },
       this.hoverTime,
-      evt
+      event
     )
   }
 
-  /**
-   * handles the mouse wheel event to enable scrolling over long text
-   * @param evt the mouse wheel event being triggered
-   */
-  onMouseWheel(evt: WheelEvent) {
-    evt.stopPropagation()
-  }
-
   /**
    * the central command event handler
    * @param evt command event
@@ -337,6 +328,8 @@ export class DataTipManager {
     try {
       let datatip: Datatip | null = null
       for (const provider of this.providerRegistry.getAllProvidersForEditor(editor)) {
+        // we only need one and we want to process them synchronously
+        // eslint-disable-next-line no-await-in-loop
         const providerTip = await provider.datatip(editor, position)
         if (providerTip) {
           datatip = providerTip
@@ -347,7 +340,7 @@ export class DataTipManager {
         this.unmountDataTip()
       } else {
         // omit update of UI if the range is the same as the current one
-        if (this.currentMarkerRange != null && datatip.range.intersectsWith(this.currentMarkerRange)) {
+        if (this.currentMarkerRange !== null && datatip.range.intersectsWith(this.currentMarkerRange)) {
           return
         }
         // make sure we are still on the same position
@@ -448,25 +441,22 @@ export class DataTipManager {
     })
 
     // OPTIMIZATION:
-    // if there is an overlay already on the same position, skip showing the datatip
+    // if there is an highligh overlay already on the same position, skip adding the highlight
     const decorations = editor.getOverlayDecorations().filter((decoration) => {
-      const decorationMarker = decoration.getMarker()
-      if (decorationMarker.compare(highlightMarker) == 1) {
-        return decoration
-      }
-      return null
+      return decoration.isType("highligh") && decoration.getMarker().compare(highlightMarker) === 1
     })
     if (decorations.length > 0) {
       highlightMarker.destroy()
-      return this.dataTipMarkerDisposables
+      // END OPTIMIZATION
+    } else {
+      // Actual Highlighting
+      disposables.add(new Disposable(() => highlightMarker.destroy()))
+
+      editor.decorateMarker(highlightMarker, {
+        type: "highlight",
+        class: "datatip-highlight-region",
+      })
     }
-    // END OPTIMIZATION
-
-    disposables.add(new Disposable(() => highlightMarker.destroy()))
-    editor.decorateMarker(highlightMarker, {
-      type: "highlight",
-      class: "datatip-highlight-region",
-    })
 
     // The actual datatip should appear at the trigger position.
     const overlayMarker = editor.markBufferRange(new Range(position, position), {
@@ -502,7 +492,7 @@ export class DataTipManager {
     }
 
     // TODO move this code to atom-ide-base
-    element.addEventListener("wheel", this.onMouseWheel, { passive: true })
+    element.addEventListener("wheel", onMouseWheel, { passive: true })
 
     return disposables
   }
@@ -516,3 +506,11 @@ export class DataTipManager {
     this.dataTipMarkerDisposables = null
   }
 }
+
+/**
+ * handles the mouse wheel event to enable scrolling over long text
+ * @param evt the mouse wheel event being triggered
+ */
+function onMouseWheel(evt: WheelEvent) {
+  evt.stopPropagation()
+}

lib/main.ts

@@ -16,10 +16,12 @@ let datatipManager: DataTipManager
 /**
  * called by Atom when activating an extension
  */
-export async function activate() {
+export function activate() {
   // Events subscribed to in atom's system can be easily cleaned up with a CompositeDisposable
   subscriptions = new CompositeDisposable()
-  if (!datatipManager) datatipManager = new DataTipManager()
+  if (!datatipManager) {
+    datatipManager = new DataTipManager()
+  }
   subscriptions.add(datatipManager)
 
   install_deps().then(() => {
@@ -31,7 +33,6 @@ async function install_deps() {
   // install package-deps if not loaded
   if (!atom.packages.isPackageLoaded("busy-signal")) {
     // Dynamic import https://mariusschulz.com/blog/dynamic-import-expressions-in-typescript
-    // @ts-ignore
     await import("atom-package-deps").then((atom_package_deps) => {
       atom_package_deps.install("atom-ide-datatip", true)
     })

package.json

@@ -34,14 +34,14 @@
     "busy-signal"
   ],
   "dependencies": {
-    "atom-ide-base": "^2.3.4",
+    "atom-ide-base": "^2.4.0",
     "atom-package-deps": "^7.2.2"
   },
   "devDependencies": {
     "@types/atom": "^1.40.9",
     "@types/jasmine": "^3.6.6",
     "@types/node": "^14.14.34",
-    "atom-jasmine3-test-runner": "^5.1.9",
+    "atom-jasmine3-test-runner": "^5.2.1",
     "build-commit": "^0.1.4",
     "cross-env": "latest",
     "eslint": "7.22.0",

rollup.config.js

@@ -14,7 +14,7 @@ const RollupConfig = [
     ],
     // loaded externally
     external: ["atom"],
-    plugins: plugins,
+    plugins,
   },
 ]
 export default RollupConfig

spec/main-spec.js

@@ -14,7 +14,7 @@ describe("atom-ide-datatip tests", () => {
     await atom.packages.activatePackage("atom-ide-datatip")
   })
 
-  it("Activation", async function () {
+  it("Activation", function () {
     expect(atom.packages.isPackageLoaded("atom-ide-datatip")).toBeTruthy()
   })
 })

spec/runner.js

@@ -1,21 +1,10 @@
 "use babel"
+// eslint-disable-next-line import/named
 import { createRunner } from "atom-jasmine3-test-runner"
 
 // https://github.com/UziTech/atom-jasmine3-test-runner#api
 export default createRunner({
   testPackages: ["atom-ide-markdown-service", "busy-signal"],
   timeReporter: true,
   specHelper: true,
-  attachToDOM: true,
-  // Extra Packages
-  customMatchers: true,
-  jasmineFocused: false,
-  jasmineJson: false,
-  jasminePass: false,
-  jasmineShouldFail: false,
-  jasmineTagged: false,
-  mockClock: true,
-  mockLocalStorage: false,
-  profile: true,
-  unspy: false,
 })