[Editor] Avoid to focus an existing editor when enabling the layer

It fixes #18911.

src/display/editor/annotation_editor_layer.js

@@ -74,6 +74,8 @@ class AnnotationEditorLayer {
 
   #isDisabling = false;
 
+  #isEnabling = false;
+
   #drawingAC = null;
 
   #focusedElement = null;
@@ -229,6 +231,7 @@ class AnnotationEditorLayer {
    * editor creation.
    */
   async enable() {
+    this.#isEnabling = true;
     this.div.tabIndex = 0;
     this.togglePointerEvents(true);
     const annotationElementIds = new Set();
@@ -242,6 +245,7 @@ class AnnotationEditorLayer {
     }
 
     if (!this.#annotationLayer) {
+      this.#isEnabling = false;
       return;
     }
 
@@ -262,6 +266,7 @@ class AnnotationEditorLayer {
       this.addOrRebuild(editor);
       editor.enableEditing();
     }
+    this.#isEnabling = false;
   }
 
   /**
@@ -508,7 +513,7 @@ class AnnotationEditorLayer {
 
     // The editor will be correctly moved into the DOM (see fixAndSetPosition).
     editor.fixAndSetPosition();
-    editor.onceAdded();
+    editor.onceAdded(/* focus = */ !this.#isEnabling);
     this.#uiManager.addToAnnotationStorage(editor);
     editor._reportTelemetry(editor.telemetryInitialData);
   }

src/display/editor/draw.js

@@ -345,7 +345,7 @@ class DrawingEditor extends AnnotationEditor {
   }
 
   /** @inheritdoc */
-  onceAdded() {
+  onceAdded(focus) {
     if (!this.annotationElementId) {
       this.parent.addUndoableEditor(this);
     }
@@ -354,7 +354,7 @@ class DrawingEditor extends AnnotationEditor {
       this.#mustBeCommitted = false;
       this.commit();
       this.parent.setSelected(this);
-      if (this.isOnScreen) {
+      if (focus && this.isOnScreen) {
         this.div.focus();
       }
     }

src/display/editor/editor.js

@@ -1367,8 +1367,9 @@ class AnnotationEditor {
 
   /**
    * Executed once this editor has been rendered.
+   * @param {boolean} focus - true if the editor should be focused.
    */
-  onceAdded() {}
+  onceAdded(focus) {}
 
   /**
    * Check if the editor contains something.

src/display/editor/freetext.js

@@ -363,13 +363,15 @@ class FreeTextEditor extends AnnotationEditor {
   }
 
   /** @inheritdoc */
-  onceAdded() {
+  onceAdded(focus) {
     if (this.width) {
       // The editor was created in using ctrl+c.
       return;
     }
     this.enableEditMode();
-    this.editorDiv.focus();
+    if (focus) {
+      this.editorDiv.focus();
+    }
     if (this._initialOptions?.isCentered) {
       this.center();
     }

src/display/editor/highlight.js

@@ -439,11 +439,13 @@ class HighlightEditor extends AnnotationEditor {
   }
 
   /** @inheritdoc */
-  onceAdded() {
+  onceAdded(focus) {
     if (!this.annotationElementId) {
       this.parent.addUndoableEditor(this);
     }
-    this.div.focus();
+    if (focus) {
+      this.div.focus();
+    }
   }
 
   /** @inheritdoc */

src/display/editor/stamp.js

@@ -338,9 +338,11 @@ class StampEditor extends AnnotationEditor {
   }
 
   /** @inheritdoc */
-  onceAdded() {
+  onceAdded(focus) {
     this._isDraggable = true;
-    this.div.focus();
+    if (focus) {
+      this.div.focus();
+    }
   }
 
   /** @inheritdoc */