JS - Add the basic architecture to be able to execute embedded js

Author: calixteman

gulpfile.js

@@ -355,6 +355,23 @@ function createWebBundle(defines) {
   return gulp.src("./web/viewer.js").pipe(webpack2Stream(viewerFileConfig));
 }
 
+function createScriptingApiBundle(defines) {
+  var scriptingApiAMDName = "pdfjs-dist/build/pdf.scripting_api";
+  var scriptingApiOutputName = "pdf.scripting_api.js";
+
+  var scriptingApiFileConfig = createWebpackConfig(defines, {
+    filename: scriptingApiOutputName,
+    library: scriptingApiAMDName,
+    libraryTarget: "umd",
+    umdNamedDefine: true,
+  });
+  return gulp
+    .src("./src/pdf.scripting_api.js")
+    .pipe(webpack2Stream(scriptingApiFileConfig))
+    .pipe(replaceWebpackRequire())
+    .pipe(replaceJSRootName(scriptingApiAMDName, "pdfjsScriptingApi"));
+}
+
 function createComponentsBundle(defines) {
   var componentsAMDName = "pdfjs-dist/web/pdf_viewer";
   var componentsOutputName = "pdf_viewer.js";
@@ -1052,6 +1069,9 @@ gulp.task(
       createWorkerBundle(defines).pipe(
         gulp.dest(MOZCENTRAL_CONTENT_DIR + "build")
       ),
+      createScriptingApiBundle(defines).pipe(
+        gulp.dest(MOZCENTRAL_CONTENT_DIR + "build")
+      ),
       createWebBundle(defines).pipe(gulp.dest(MOZCENTRAL_CONTENT_DIR + "web")),
       gulp
         .src(MOZCENTRAL_COMMON_WEB_FILES, { base: "web/" })

src/display/annotation_layer.js

@@ -462,6 +462,8 @@ class TextWidgetAnnotationElement extends WidgetAnnotationElement {
         element.setAttribute("value", textContent);
       }
 
+      element.setAttribute("id", id);
+
       element.addEventListener("input", function (event) {
         storage.setValue(id, event.target.value);
       });
@@ -470,6 +472,39 @@ class TextWidgetAnnotationElement extends WidgetAnnotationElement {
         event.target.setSelectionRange(0, 0);
       });
 
+      if (this.data.actions) {
+        element.addEventListener("updateFromSandbox", function (event) {
+          const data = event.detail;
+          if ("value" in data) {
+            event.target.value = event.detail.value;
+          } else if ("focus" in data) {
+            event.target.focus({ preventScroll: false });
+          }
+        });
+
+        for (const eventType of Object.keys(this.data.actions)) {
+          switch (eventType) {
+            case "Format":
+              element.addEventListener("blur", function (event) {
+                window.dispatchEvent(
+                  new CustomEvent("dispatchEventInSandbox", {
+                    detail: {
+                      field: "value",
+                      id,
+                      event: {
+                        type: "Field",
+                        name: "Format",
+                        value: event.target.value,
+                      },
+                    },
+                  })
+                );
+              });
+              break;
+          }
+        }
+      }
+
       element.disabled = this.data.readOnly;
       element.name = this.data.fieldName;
 

src/pdf.scripting_api.js

@@ -0,0 +1,24 @@
+/* Copyright 2020 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { generateCode } from "./scripting_api/code_gen.js";
+
+const Scripting = {
+  getCode(objects) {
+    return generateCode(objects);
+  },
+};
+
+export { Scripting };