[Editor] Edit an existing FreeText annotation in double-clicking on it (bug 1787298)

src/display/annotation_layer.js

@@ -601,6 +601,20 @@ class AnnotationElement {
       triggers.classList.add("highlightArea");
     }
   }
+
+  _editOnDoubleClick() {
+    const {
+      annotationEditorType: mode,
+      data: { id: editId },
+    } = this;
+    this.container.addEventListener("dblclick", () => {
+      this.linkService.eventBus?.dispatch("switchannotationeditormode", {
+        source: this,
+        mode,
+        editId,
+      });
+    });
+  }
 }
 
 class LinkAnnotationElement extends AnnotationElement {
@@ -2217,6 +2231,9 @@ class FreeTextAnnotationElement extends AnnotationElement {
     if (!this.data.popupRef) {
       this._createPopup();
     }
+
+    this._editOnDoubleClick();
+
     return this.container;
   }
 }

src/display/editor/editor.js

@@ -621,6 +621,11 @@ class AnnotationEditor {
    */
   enableEditing() {}
 
+  /**
+   * The editor is about to be edited.
+   */
+  enterInEditMode() {}
+
   /**
    * Get the div which really contains the displayed content.
    */

src/display/editor/freetext.js

@@ -403,13 +403,18 @@ class FreeTextEditor extends AnnotationEditor {
     return this.isInEditMode();
   }
 
+  /** @inheritdoc */
+  enterInEditMode() {
+    this.enableEditMode();
+    this.editorDiv.focus();
+  }
+
   /**
    * ondblclick callback.
    * @param {MouseEvent} event
    */
   dblclick(event) {
-    this.enableEditMode();
-    this.editorDiv.focus();
+    this.enterInEditMode();
   }
 
   /**
@@ -418,8 +423,7 @@ class FreeTextEditor extends AnnotationEditor {
    */
   keydown(event) {
     if (event.target === this.div && event.key === "Enter") {
-      this.enableEditMode();
-      this.editorDiv.focus();
+      this.enterInEditMode();
     }
   }
 

src/display/editor/tools.js

@@ -912,17 +912,28 @@ class AnnotationEditorUIManager {
   /**
    * Change the editor mode (None, FreeText, Ink, ...)
    * @param {number} mode
+   * @param {string|null} editId
    */
-  updateMode(mode) {
+  updateMode(mode, editId = null) {
     this.#mode = mode;
     if (mode === AnnotationEditorType.NONE) {
       this.setEditingState(false);
       this.#disableAll();
-    } else {
-      this.setEditingState(true);
-      this.#enableAll();
-      for (const layer of this.#allLayers.values()) {
-        layer.updateMode(mode);
+      return;
+    }
+    this.setEditingState(true);
+    this.#enableAll();
+    for (const layer of this.#allLayers.values()) {
+      layer.updateMode(mode);
+    }
+    if (!editId) {
+      return;
+    }
+    for (const editor of this.#allEditors.values()) {
+      if (editor.annotationElementId === editId) {
+        this.setSelected(editor);
+        editor.enterInEditMode();
+        break;
       }
     }
   }