Bug 1580334 - Hovering on the timeline should update the debugger.

Differential Revision: https://phabricator.services.mozilla.com/D46550

--HG--
extra : moz-landing-system : lando

devtools/client/debugger/panel.js

@@ -168,6 +168,14 @@ DebuggerPanel.prototype = {
     return this._actions.selectSourceURL(cx, url, { line, column });
   },
 
+  previewPausedLocation(location) {
+    return this._actions.previewPausedLocation(location);
+  },
+
+  clearPreviewPausedLocation() {
+    return this._actions.clearPreviewPausedLocation();
+  },
+
   async selectSource(sourceId, line, column) {
     const cx = this._selectors.getContext(this._getState());
     const location = { sourceId, line, column };

devtools/client/debugger/src/actions/pause/index.js

@@ -30,3 +30,7 @@ export { toggleSkipPausing, setSkipPausing } from "./skipPausing";
 export { toggleMapScopes } from "./mapScopes";
 export { setExpandedScope } from "./expandScopes";
 export { generateInlinePreview } from "./inlinePreview";
+export {
+  previewPausedLocation,
+  clearPreviewPausedLocation,
+} from "./previewPausedLocation";

devtools/client/debugger/src/actions/pause/moz.build

@@ -19,6 +19,7 @@ CompiledModules(
     'mapScopes.js',
     'paused.js',
     'pauseOnExceptions.js',
+    'previewPausedLocation.js',
     'resumed.js',
     'selectFrame.js',
     'skipPausing.js',

devtools/client/debugger/src/actions/pause/previewPausedLocation.js

@@ -0,0 +1,39 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+// @flow
+
+import { selectLocation } from "../sources";
+import { getContext, getSourceByURL } from "../../selectors";
+import type { ThunkArgs } from "../types";
+
+type Location = {
+  sourceUrl: string,
+  column: number,
+  line: number,
+};
+
+export function previewPausedLocation(location: Location) {
+  return ({ dispatch, getState }: ThunkArgs) => {
+    const cx = getContext(getState());
+    const source = getSourceByURL(getState(), location.sourceUrl);
+    if (!source) {
+      return;
+    }
+
+    const sourceLocation = { ...location, sourceId: source.id };
+    dispatch(selectLocation(cx, sourceLocation));
+
+    dispatch({
+      type: "PREVIEW_PAUSED_LOCATION",
+      location: sourceLocation,
+    });
+  };
+}
+
+export function clearPreviewPausedLocation() {
+  return {
+    type: "CLEAR_PREVIEW_PAUSED_LOCATION",
+  };
+}

devtools/client/debugger/src/actions/types/index.js

@@ -5,7 +5,13 @@
 // @flow
 
 import typeof SourceMaps from "devtools-source-map";
-import type { ThreadList, Thread, Context, ThreadId } from "../../types";
+import type {
+  ThreadList,
+  Thread,
+  Context,
+  ThreadId,
+  SourceLocation,
+} from "../../types";
 import type { State } from "../../reducers/types";
 import type { MatchedLocations } from "../../reducers/file-search";
 import type { TreeNode } from "../../utils/sources-tree/types";
@@ -149,6 +155,13 @@ export type DebuggeeAction =
       +type: "SELECT_THREAD",
       +cx: Context,
       +thread: ThreadId,
+    |}
+  | {|
+      +type: "PREVIEW_PAUSED_LOCATION",
+      +location: SourceLocation,
+    |}
+  | {|
+      +type: "CLEAR_PREVIEW_PAUSED_LOCATION",
     |};
 
 export type {

devtools/client/debugger/src/components/Editor/DebugLine.js

@@ -20,12 +20,13 @@ import {
   getPauseReason,
   getSourceWithContent,
   getCurrentThread,
+  getPausePreviewLocation,
 } from "../../selectors";
 
-import type { Frame, Why, SourceWithContent } from "../../types";
+import type { SourceLocation, Why, SourceWithContent } from "../../types";
 
 type Props = {
-  frame: Frame,
+  location: SourceLocation,
   why: Why,
   source: ?SourceWithContent,
 };
@@ -35,42 +36,40 @@ type TextClasses = {
   lineClass: string,
 };
 
-function isDocumentReady(source: ?SourceWithContent, frame) {
+function isDocumentReady(source: ?SourceWithContent, location) {
-  return (
+  return location && source && source.content && hasDocument(location.sourceId);
-    frame && source && source.content && hasDocument(frame.location.sourceId)
-  );
 }
 
 export class DebugLine extends PureComponent<Props> {
   debugExpression: null;
 
   componentDidMount() {
-    const { why, frame, source } = this.props;
+    const { why, location, source } = this.props;
-    this.setDebugLine(why, frame, source);
+    this.setDebugLine(why, location, source);
   }
 
   componentWillUnmount() {
-    const { why, frame, source } = this.props;
+    const { why, location, source } = this.props;
-    this.clearDebugLine(why, frame, source);
+    this.clearDebugLine(why, location, source);
   }
 
   componentDidUpdate(prevProps: Props) {
-    const { why, frame, source } = this.props;
+    const { why, location, source } = this.props;
 
     startOperation();
-    this.clearDebugLine(prevProps.why, prevProps.frame, prevProps.source);
+    this.clearDebugLine(prevProps.why, prevProps.location, prevProps.source);
-    this.setDebugLine(why, frame, source);
+    this.setDebugLine(why, location, source);
     endOperation();
   }
 
-  setDebugLine(why: Why, frame: Frame, source: ?SourceWithContent) {
+  setDebugLine(why: Why, location: SourceLocation, source: ?SourceWithContent) {
-    if (!isDocumentReady(source, frame)) {
+    if (!isDocumentReady(source, location)) {
       return;
     }
-    const sourceId = frame.location.sourceId;
+    const sourceId = location.sourceId;
     const doc = getDocument(sourceId);
 
-    let { line, column } = toEditorPosition(frame.location);
+    let { line, column } = toEditorPosition(location);
     let { markTextClass, lineClass } = this.getTextClasses(why);
     doc.addLineClass(line, "line", lineClass);
 
@@ -92,8 +91,12 @@ export class DebugLine extends PureComponent<Props> {
     );
   }
 
-  clearDebugLine(why: Why, frame: Frame, source: ?SourceWithContent) {
+  clearDebugLine(
-    if (!isDocumentReady(source, frame)) {
+    why: Why,
+    location: SourceLocation,
+    source: ?SourceWithContent
+  ) {
+    if (!isDocumentReady(source, location)) {
       return;
     }
 
@@ -101,15 +104,15 @@ export class DebugLine extends PureComponent<Props> {
       this.debugExpression.clear();
     }
 
-    const sourceId = frame.location.sourceId;
+    const sourceId = location.sourceId;
-    const { line } = toEditorPosition(frame.location);
+    const { line } = toEditorPosition(location);
     const doc = getDocument(sourceId);
     const { lineClass } = this.getTextClasses(why);
     doc.removeLineClass(line, "line", lineClass);
   }
 
   getTextClasses(why: Why): TextClasses {
-    if (isException(why)) {
+    if (why && isException(why)) {
       return {
         markTextClass: "debug-expression-error",
         lineClass: "new-debug-line-error",
@@ -126,9 +129,12 @@ export class DebugLine extends PureComponent<Props> {
 
 const mapStateToProps = state => {
   const frame = getVisibleSelectedFrame(state);
+  const previewLocation = getPausePreviewLocation(state);
+  const location = previewLocation || (frame && frame.location);
   return {
     frame,
-    source: frame && getSourceWithContent(state, frame.location.sourceId),
+    location,
+    source: location && getSourceWithContent(state, location.sourceId),
     why: getPauseReason(state, getCurrentThread(state)),
   };
 };

devtools/client/debugger/src/components/Editor/tests/DebugLine.spec.js

@@ -41,13 +41,11 @@ function generateDefaults(editor, overrides) {
   };
 }
 
-function createFrame(line) {
+function createLocation(line) {
   return {
-    location: {
     sourceId: "foo",
     line,
     column: 2,
-    },
   };
 }
 
@@ -80,9 +78,9 @@ describe("DebugLine Component", () => {
         },
       });
       const line = 2;
-      const frame = createFrame(line);
+      const location = createLocation(line);
 
-      component.setProps({ ...props, frame });
+      component.setProps({ ...props, location });
 
       expect(doc.removeLineClass.mock.calls).toEqual([]);
       expect(doc.addLineClass.mock.calls).toEqual([
@@ -107,10 +105,10 @@ describe("DebugLine Component", () => {
         const firstLine = 2;
         const secondLine = 2;
 
-        component.setProps({ ...props, frame: createFrame(firstLine) });
+        component.setProps({ ...props, location: createLocation(firstLine) });
         component.setProps({
           ...props,
-          frame: createFrame(secondLine),
+          frame: createLocation(secondLine),
         });
 
         expect(doc.removeLineClass.mock.calls).toEqual([
@@ -143,9 +141,9 @@ describe("DebugLine Component", () => {
       it("should not set the debug line", () => {
         const { component, props, doc } = render({ frame: null });
         const line = 2;
-        const frame = createFrame(line);
+        const location = createLocation(line);
 
-        component.setProps({ ...props, frame });
+        component.setProps({ ...props, location });
         expect(doc.removeLineClass).not.toHaveBeenCalled();
       });
     });

devtools/client/debugger/src/reducers/pause.js

@@ -3,7 +3,7 @@
  * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
 
 // @flow
-/* eslint complexity: ["error", 30]*/
+/* eslint complexity: ["error", 35]*/
 
 /**
  * Pause reducer
@@ -29,6 +29,7 @@ import type {
   Context,
   ThreadContext,
   Previews,
+  SourceLocation,
 } from "../types";
 
 export type Command =
@@ -96,6 +97,7 @@ export type PauseState = {
   mapScopes: boolean,
   shouldPauseOnExceptions: boolean,
   shouldPauseOnCaughtExceptions: boolean,
+  previewLocation: ?SourceLocation,
 };
 
 function createPauseState(thread: ThreadId = "UnknownThread") {
@@ -109,6 +111,7 @@ function createPauseState(thread: ThreadId = "UnknownThread") {
       isPaused: false,
       pauseCounter: 0,
     },
+    previewLocation: null,
     threads: {},
     canRewind: false,
     skipPausing: prefs.skipPausing,
@@ -191,6 +194,7 @@ function update(
 
       state = {
         ...state,
+        previewLocation: null,
         threadcx: {
           ...state.threadcx,
           pauseCounter: state.threadcx.pauseCounter + 1,
@@ -207,6 +211,14 @@ function update(
       });
     }
 
+    case "PREVIEW_PAUSED_LOCATION": {
+      return { ...state, previewLocation: action.location };
+    }
+
+    case "CLEAR_PREVIEW_PAUSED_LOCATION": {
+      return { ...state, previewLocation: null };
+    }
+
     case "MAP_FRAMES": {
       const { selectedFrameId, frames } = action;
       return updateThreadState({ frames, selectedFrameId });
@@ -677,4 +689,8 @@ export function getLastExpandedScopes(state: State, thread: ThreadId) {
   return getThreadPauseState(state.pause, thread).lastExpandedScopes;
 }
 
+export function getPausePreviewLocation(state: State) {
+  return state.pause.previewLocation;
+}
+
 export default update;

devtools/client/webreplay/components/WebReplayPlayer.js

@@ -101,6 +101,13 @@ function sameLocation(m1, m2) {
   );
 }
 
+function getMessageLocation(message) {
+  const {
+    frame: { source, line, column },
+  } = message;
+  return { sourceUrl: source, line, column };
+}
+
 /*
  *
  * The player has 4 valid states
@@ -341,11 +348,6 @@ class WebReplayPlayer extends Component {
     }
   }
 
-  async clearPreviewLocation() {
-    const dbg = await this.toolbox.loadTool("jsdebugger");
-    dbg.clearPreviewPausedLocation();
-  }
-
   unhighlightConsoleMessage() {
     if (this.hoveredMessage) {
       this.hoveredMessage.classList.remove("highlight");
@@ -374,9 +376,20 @@ class WebReplayPlayer extends Component {
   }
 
   onMessageMouseEnter(message) {
+    this.previewLocation(message);
     this.showMessage(message);
   }
 
+  async previewLocation(closestMessage) {
+    const dbg = await this.toolbox.loadTool("jsdebugger");
+    dbg.previewPausedLocation(getMessageLocation(closestMessage));
+  }
+
+  async clearPreviewLocation() {
+    const dbg = await this.toolbox.loadTool("jsdebugger");
+    dbg.clearPreviewPausedLocation();
+  }
+
   onProgressBarClick(e) {
     if (!e.altKey) {
       return;
@@ -403,6 +416,7 @@ class WebReplayPlayer extends Component {
 
   onPlayerMouseLeave() {
     this.unhighlightConsoleMessage();
+    this.clearPreviewLocation();
     return this.threadFront.paintCurrentPoint();
   }
 
@@ -614,7 +628,7 @@ class WebReplayPlayer extends Component {
         e.stopPropagation();
         this.seek(message.executionPoint);
       },
-      onMouseEnter: () => this.onMessageMouseEnter(message.executionPoint),
+      onMouseEnter: () => this.onMessageMouseEnter(message),
     });
   }