[Editor] Add some telemetry for the highlight feature (bug 1866437)

src/display/annotation_storage.js

@@ -212,6 +212,41 @@ class AnnotationStorage {
       ? { map, hash: hash.hexdigest(), transfer }
       : SerializableEmpty;
   }
+
+  get editorStats() {
+    const stats = Object.create(null);
+    const typeToEditor = new Map();
+    for (const value of this.#storage.values()) {
+      if (!(value instanceof AnnotationEditor)) {
+        continue;
+      }
+      const editorStats = value.telemetryFinalData;
+      if (!editorStats) {
+        continue;
+      }
+      const { type } = editorStats;
+      if (!typeToEditor.has(type)) {
+        typeToEditor.set(type, Object.getPrototypeOf(value).constructor);
+      }
+      const map = (stats[type] ||= new Map());
+      for (const [key, val] of Object.entries(editorStats)) {
+        if (key === "type") {
+          continue;
+        }
+        let counters = map.get(key);
+        if (!counters) {
+          counters = new Map();
+          map.set(key, counters);
+        }
+        const count = counters.get(val) ?? 0;
+        counters.set(val, count + 1);
+      }
+    }
+    for (const [type, editor] of typeToEditor) {
+      stats[type] = editor.computeTelemetryFinalData(stats[type]);
+    }
+    return stats;
+  }
 }
 
 /**

src/display/editor/alt_text.js

@@ -146,15 +146,8 @@ class AltText {
         this.#altTextTooltipTimeout = setTimeout(() => {
           this.#altTextTooltipTimeout = null;
           this.#altTextTooltip.classList.add("show");
-          this.#editor._uiManager._eventBus.dispatch("reporttelemetry", {
-            source: this,
-            details: {
-              type: "editing",
-              subtype: this.#editor.editorType,
-              data: {
-                action: "alt_text_tooltip",
-              },
-            },
+          this.#editor._reportTelemetry({
+            action: "alt_text_tooltip",
           });
         }, DELAY_TO_SHOW_TOOLTIP);
       });

src/display/editor/annotation_editor_layer.js

@@ -471,6 +471,7 @@ class AnnotationEditorLayer {
     editor.fixAndSetPosition();
     editor.onceAdded();
     this.#uiManager.addToAnnotationStorage(editor);
+    editor._reportTelemetry(editor.telemetryInitialData);
   }
 
   moveEditorInDOM(editor) {

src/display/editor/editor.js

@@ -72,6 +72,8 @@ class AnnotationEditor {
 
   #prevDragY = 0;
 
+  #telemetryTimeouts = null;
+
   _initialOptions = Object.create(null);
 
   _uiManager = null;
@@ -90,6 +92,11 @@ class AnnotationEditor {
 
   static _zIndex = 1;
 
+  // Time to wait (in ms) before sending the telemetry data.
+  // We wait a bit to avoid sending too many requests when changing something
+  // like the thickness of a line.
+  static _telemetryTimeout = 1000;
+
   static get _resizerKeyboardManager() {
     const resize = AnnotationEditor.prototype._resizeWithKeyboard;
     const small = AnnotationEditorUIManager.TRANSLATE_SMALL;
@@ -1323,6 +1330,12 @@ class AnnotationEditor {
     }
     this.#stopResizing();
     this.removeEditToolbar();
+    if (this.#telemetryTimeouts) {
+      for (const timeout of this.#telemetryTimeouts.values()) {
+        clearTimeout(timeout);
+      }
+      this.#telemetryTimeouts = null;
+    }
   }
 
   /**
@@ -1598,6 +1611,50 @@ class AnnotationEditor {
   static canCreateNewEmptyEditor() {
     return true;
   }
+
+  /**
+   * Get the data to report to the telemetry when the editor is added.
+   * @returns {Object}
+   */
+  get telemetryInitialData() {
+    return { action: "added" };
+  }
+
+  /**
+   * The telemetry data to use when saving/printing.
+   * @returns {Object|null}
+   */
+  get telemetryFinalData() {
+    return null;
+  }
+
+  _reportTelemetry(data, mustWait = false) {
+    if (mustWait) {
+      this.#telemetryTimeouts ||= new Map();
+      const { action } = data;
+      let timeout = this.#telemetryTimeouts.get(action);
+      if (timeout) {
+        clearTimeout(timeout);
+      }
+      timeout = setTimeout(() => {
+        this._reportTelemetry(data);
+        this.#telemetryTimeouts.delete(action);
+        if (this.#telemetryTimeouts.size === 0) {
+          this.#telemetryTimeouts = null;
+        }
+      }, AnnotationEditor._telemetryTimeout);
+      this.#telemetryTimeouts.set(action, timeout);
+      return;
+    }
+    data.type ||= this.editorType;
+    this._uiManager._eventBus.dispatch("reporttelemetry", {
+      source: this,
+      details: {
+        type: "editing",
+        data,
+      },
+    });
+  }
 }
 
 // This class is used to fake an editor which has been deleted.

src/display/editor/highlight.js

@@ -52,6 +52,8 @@ class HighlightEditor extends AnnotationEditor {
 
   #thickness;
 
+  #methodOfCreation = "";
+
   static _defaultColor = null;
 
   static _defaultOpacity = 1;
@@ -76,6 +78,7 @@ class HighlightEditor extends AnnotationEditor {
     this.#thickness = params.thickness || HighlightEditor._defaultThickness;
     this.#opacity = params.opacity || HighlightEditor._defaultOpacity;
     this.#boxes = params.boxes || null;
+    this.#methodOfCreation = params.methodOfCreation || "";
     this._isDraggable = false;
 
     if (params.highlightId > -1) {
@@ -89,6 +92,34 @@ class HighlightEditor extends AnnotationEditor {
     }
   }
 
+  /** @inheritdoc */
+  get telemetryInitialData() {
+    return {
+      action: "added",
+      type: this.#telemetryType,
+      color: this._uiManager.highlightColorNames.get(this.color),
+      thickness: this.#thickness,
+      methodOfCreation: this.#methodOfCreation,
+    };
+  }
+
+  /** @inheritdoc */
+  get telemetryFinalData() {
+    return {
+      type: this.#telemetryType,
+      color: this._uiManager.highlightColorNames.get(this.color),
+    };
+  }
+
+  static computeTelemetryFinalData(data) {
+    // We want to know how many colors have been used.
+    return { numberOfColors: data.get("color").size };
+  }
+
+  get #telemetryType() {
+    return this.#isFreeHighlight ? "free_highlight" : "highlight";
+  }
+
   #createOutlines() {
     const outliner = new Outliner(this.#boxes, /* borderWidth = */ 0.001);
     this.#highlightOutlines = outliner.getOutlines();
@@ -274,6 +305,14 @@ class HighlightEditor extends AnnotationEditor {
       overwriteIfSameType: true,
       keepUndo: true,
     });
+
+    this._reportTelemetry(
+      {
+        action: "color_changed",
+        color: this._uiManager.highlightColorNames.get(color),
+      },
+      /* mustWait = */ true
+    );
   }
 
   /**
@@ -295,6 +334,10 @@ class HighlightEditor extends AnnotationEditor {
       overwriteIfSameType: true,
       keepUndo: true,
     });
+    this._reportTelemetry(
+      { action: "thickness_changed", thickness },
+      /* mustWait = */ true
+    );
   }
 
   /** @inheritdoc */
@@ -349,6 +392,9 @@ class HighlightEditor extends AnnotationEditor {
   remove() {
     super.remove();
     this.#cleanDrawLayer();
+    this._reportTelemetry({
+      action: "deleted",
+    });
   }
 
   /** @inheritdoc */

src/display/editor/stamp.js

@@ -326,15 +326,8 @@ class StampEditor extends AnnotationEditor {
     // There are multiple ways to add an image to the page, so here we just
     // count the number of times an image is added to the page whatever the way
     // is.
-    this._uiManager._eventBus.dispatch("reporttelemetry", {
-      source: this,
-      details: {
-        type: "editing",
-        subtype: this.editorType,
-        data: {
-          action: "inserted_image",
-        },
-      },
+    this._reportTelemetry({
+      action: "inserted_image",
     });
     this.addAltTextButton();
     if (this.#bitmapFileName) {

src/display/editor/tools.js

@@ -871,6 +871,16 @@ class AnnotationEditorUIManager {
     );
   }
 
+  get highlightColorNames() {
+    return shadow(
+      this,
+      "highlightColorNames",
+      this.highlightColors
+        ? new Map(Array.from(this.highlightColors, e => e.reverse()))
+        : null
+    );
+  }
+
   setMainHighlightColorPicker(colorPicker) {
     this.#mainHighlightColorPicker = colorPicker;
   }
@@ -932,7 +942,7 @@ class AnnotationEditorUIManager {
     this.viewParameters.rotation = pagesRotation;
   }
 
-  highlightSelection() {
+  highlightSelection(methodOfCreation = "") {
     const selection = document.getSelection();
     if (!selection || selection.isCollapsed) {
       return;
@@ -953,7 +963,10 @@ class AnnotationEditorUIManager {
     }
     for (const layer of this.#allLayers.values()) {
       if (layer.hasTextLayer(textLayer)) {
-        layer.createAndAddNewEditor({ x: 0, y: 0 }, false, { boxes });
+        layer.createAndAddNewEditor({ x: 0, y: 0 }, false, {
+          methodOfCreation,
+          boxes,
+        });
         break;
       }
     }
@@ -1020,7 +1033,7 @@ class AnnotationEditorUIManager {
         window.removeEventListener("pointerup", pointerup);
         window.removeEventListener("blur", pointerup);
         if (e.type === "pointerup") {
-          this.highlightSelection();
+          this.highlightSelection("main_toolbar");
         }
       };
       window.addEventListener("pointerup", pointerup);
@@ -1050,7 +1063,7 @@ class AnnotationEditorUIManager {
     this.isShiftKeyDown = false;
     if (this.#highlightWhenShiftUp) {
       this.#highlightWhenShiftUp = false;
-      this.highlightSelection();
+      this.highlightSelection("main_toolbar");
     }
     if (!this.hasSelection) {
       return;
@@ -1240,7 +1253,7 @@ class AnnotationEditorUIManager {
       this.isShiftKeyDown = false;
       if (this.#highlightWhenShiftUp) {
         this.#highlightWhenShiftUp = false;
-        this.highlightSelection();
+        this.highlightSelection("main_toolbar");
       }
     }
   }
@@ -1249,15 +1262,18 @@ class AnnotationEditorUIManager {
    * Execute an action for a given name.
    * For example, the user can click on the "Undo" entry in the context menu
    * and it'll trigger the undo action.
-   * @param {Object} details
    */
-  onEditingAction(details) {
-    if (
-      ["undo", "redo", "delete", "selectAll", "highlightSelection"].includes(
-        details.name
-      )
-    ) {
-      this[details.name]();
+  onEditingAction({ name }) {
+    switch (name) {
+      case "undo":
+      case "redo":
+      case "delete":
+      case "selectAll":
+        this[name]();
+        break;
+      case "highlightSelection":
+        this.highlightSelection("context_menu");
+        break;
     }
   }
 

web/alt_text_manager.js

@@ -248,17 +248,12 @@ class AltTextManager {
   }
 
   #close() {
-    this.#eventBus.dispatch("reporttelemetry", {
-      source: this,
-      details: {
-        type: "editing",
-        subtype: this.#currentEditor.editorType,
-        data: this.#telemetryData || {
-          action: "alt_text_cancel",
-          alt_text_keyboard: !this.#hasUsedPointer,
-        },
-      },
-    });
+    this.#currentEditor._reportTelemetry(
+      this.#telemetryData || {
+        action: "alt_text_cancel",
+        alt_text_keyboard: !this.#hasUsedPointer,
+      }
+    );
     this.#telemetryData = null;
 
     this.#removeOnClickListeners();

web/app.js

@@ -1152,7 +1152,10 @@ const PDFViewerApplication = {
     if (this._hasAnnotationEditors) {
       this.externalServices.reportTelemetry({
         type: "editing",
-        data: { type: "save" },
+        data: {
+          type: "save",
+          stats: this.pdfDocument?.annotationStorage.editorStats,
+        },
       });
     }
   },
@@ -1727,13 +1730,6 @@ const PDFViewerApplication = {
     annotationStorage.onAnnotationEditor = typeStr => {
       this._hasAnnotationEditors = !!typeStr;
       this.setTitle();
-
-      if (typeStr) {
-        this.externalServices.reportTelemetry({
-          type: "editing",
-          data: { type: typeStr },
-        });
-      }
     };
   },
 
@@ -1857,7 +1853,10 @@ const PDFViewerApplication = {
     if (this._hasAnnotationEditors) {
       this.externalServices.reportTelemetry({
         type: "editing",
-        data: { type: "print" },
+        data: {
+          type: "print",
+          stats: this.pdfDocument?.annotationStorage.editorStats,
+        },
       });
     }
   },