Move the pdfBug option from the global PDFJS object and into getDocument instead

Also removes the now unused `getDefaultSetting` helper function.

src/display/api.js

@@ -22,7 +22,7 @@ import {
   unreachable, Util, warn
 } from '../shared/util';
 import {
-  DOMCanvasFactory, DOMCMapReaderFactory, DummyStatTimer, getDefaultSetting,
+  DOMCanvasFactory, DOMCMapReaderFactory, DummyStatTimer,
   RenderingCancelledException, StatTimer
 } from './dom_utils';
 import { FontFaceObject, FontLoader } from './font_loader';
@@ -181,6 +181,8 @@ function setPDFNetworkStreamFactory(pdfNetworkStreamFactory) {
  * @property {boolean} disableCreateObjectURL - (optional) Disable the use of
  *   `URL.createObjectURL`, for compatibility with older browsers.
  *   The default value is `false`.
+ * @property {boolean} pdfBug - (optional) Enables special hooks for debugging
+ *   PDF.js (see `web/debugger.js`). The default value is `false`.
  */
 
 /**
@@ -267,6 +269,7 @@ function getDocument(src) {
 
   params.rangeChunkSize = params.rangeChunkSize || DEFAULT_RANGE_CHUNK_SIZE;
   params.ignoreErrors = params.stopAtErrors !== true;
+  params.pdfBug = params.pdfBug === true;
 
   const NativeImageDecoderValues = Object.values(NativeImageDecoding);
   if (params.nativeImageDecoderSupport === undefined ||
@@ -812,12 +815,12 @@ var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
  * @alias PDFPageProxy
  */
 var PDFPageProxy = (function PDFPageProxyClosure() {
-  function PDFPageProxy(pageIndex, pageInfo, transport) {
+  function PDFPageProxy(pageIndex, pageInfo, transport, pdfBug = false) {
     this.pageIndex = pageIndex;
     this.pageInfo = pageInfo;
     this.transport = transport;
-    this._stats = (getDefaultSetting('pdfBug') ?
-                   new StatTimer() : DummyStatTimer);
+    this._stats = (pdfBug ? new StatTimer() : DummyStatTimer);
+    this._pdfBug = pdfBug;
     this.commonObjs = transport.commonObjs;
     this.objs = new PDFObjects();
     this.cleanupAfterRender = false;
@@ -954,7 +957,8 @@ var PDFPageProxy = (function PDFPageProxyClosure() {
                                                       intentState.operatorList,
                                                       this.pageNumber,
                                                       canvasFactory,
-                                                      webGLContext);
+                                                      webGLContext,
+                                                      this._pdfBug);
       internalRenderTask.useRequestAnimationFrame = renderingIntent !== 'print';
       if (!intentState.renderTasks) {
         intentState.renderTasks = [];
@@ -1860,8 +1864,8 @@ var WorkerTransport = (function WorkerTransportClosure() {
               break;
             }
             var fontRegistry = null;
-            if (getDefaultSetting('pdfBug') && globalScope.FontInspector &&
-                globalScope['FontInspector'].enabled) {
+            if (params.pdfBug && globalScope.FontInspector &&
+                globalScope.FontInspector.enabled) {
               fontRegistry = {
                 registerFont(font, url) {
                   globalScope['FontInspector'].fontAdded(font, url);
@@ -2067,7 +2071,8 @@ var WorkerTransport = (function WorkerTransportClosure() {
         if (this.destroyed) {
           throw new Error('Transport destroyed');
         }
-        var page = new PDFPageProxy(pageIndex, pageInfo, this);
+        let page = new PDFPageProxy(pageIndex, pageInfo, this,
+                                    this._params.pdfBug);
         this.pageCache[pageIndex] = page;
         return page;
       });
@@ -2327,7 +2332,8 @@ var InternalRenderTask = (function InternalRenderTaskClosure() {
   let canvasInRendering = new WeakMap();
 
   function InternalRenderTask(callback, params, objs, commonObjs, operatorList,
-                              pageNumber, canvasFactory, webGLContext) {
+                              pageNumber, canvasFactory, webGLContext,
+                              pdfBug = false) {
     this.callback = callback;
     this.params = params;
     this.objs = objs;
@@ -2337,6 +2343,7 @@ var InternalRenderTask = (function InternalRenderTaskClosure() {
     this.pageNumber = pageNumber;
     this.canvasFactory = canvasFactory;
     this.webGLContext = webGLContext;
+    this._pdfBug = pdfBug;
 
     this.running = false;
     this.graphicsReadyCallback = null;
@@ -2370,7 +2377,7 @@ var InternalRenderTask = (function InternalRenderTaskClosure() {
       if (this.cancelled) {
         return;
       }
-      if (getDefaultSetting('pdfBug') && globalScope.StepperManager &&
+      if (this._pdfBug && globalScope.StepperManager &&
           globalScope.StepperManager.enabled) {
         this.stepper = globalScope.StepperManager.create(this.pageNumber - 1);
         this.stepper.init(this.operatorList);

src/display/dom_utils.js

@@ -17,7 +17,6 @@ import {
   assert, CMapCompressionType, removeNullCharacters, stringToBytes,
   unreachable, warn
 } from '../shared/util';
-import globalScope from '../shared/global_scope';
 
 const DEFAULT_LINK_REL = 'noopener noreferrer nofollow';
 const SVG_NS = 'http://www.w3.org/2000/svg';
@@ -329,18 +328,6 @@ function getFilenameFromUrl(url) {
   return url.substring(url.lastIndexOf('/', end) + 1, end);
 }
 
-function getDefaultSetting(id) {
-  // The list of the settings and their default is maintained for backward
-  // compatibility and shall not be extended or modified. See also global.js.
-  var globalSettings = globalScope.PDFJS;
-  switch (id) {
-    case 'pdfBug':
-      return globalSettings ? globalSettings.pdfBug : false;
-    default:
-      throw new Error('Unknown default setting: ' + id);
-  }
-}
-
 class StatTimer {
   constructor(enable = true) {
     this.enabled = !!enable;
@@ -420,7 +407,6 @@ export {
   addLinkAttributes,
   getFilenameFromUrl,
   LinkTarget,
-  getDefaultSetting,
   DEFAULT_LINK_REL,
   DOMCanvasFactory,
   DOMCMapReaderFactory,

src/display/global.js

@@ -39,8 +39,6 @@ if (!globalScope.PDFJS) {
 }
 var PDFJS = globalScope.PDFJS;
 
-PDFJS.pdfBug = false;
-
 PDFJS.OPS = OPS;
 PDFJS.UNSUPPORTED_FEATURES = UNSUPPORTED_FEATURES;
 PDFJS.shadow = shadow;
@@ -62,12 +60,6 @@ PDFJS.Util = Util;
 PDFJS.PageViewport = PageViewport;
 PDFJS.createPromiseCapability = createPromiseCapability;
 
-/**
- * Enables special hooks for debugging PDF.js.
- * @var {boolean}
- */
-PDFJS.pdfBug = (PDFJS.pdfBug === undefined ? false : PDFJS.pdfBug);
-
 PDFJS.getDocument = getDocument;
 PDFJS.LoopbackPort = LoopbackPort;
 PDFJS.PDFDataRangeTransport = PDFDataRangeTransport;

src/display/text_layer.js

@@ -14,7 +14,7 @@
  */
 
 import { AbortException, createPromiseCapability, Util } from '../shared/util';
-import { getDefaultSetting } from './dom_utils';
+import globalScope from '../shared/global_scope';
 
 /**
  * Text layer render parameters.
@@ -107,11 +107,9 @@ var renderTextLayer = (function renderTextLayerClosure() {
     textDiv.setAttribute('style', textDivProperties.style);
 
     textDiv.textContent = geom.str;
-    // |fontName| is only used by the Font Inspector. This test will succeed
-    // when e.g. the Font Inspector is off but the Stepper is on, but it's
-    // not worth the effort to do a more accurate test. We only use `dataset`
-    // here to make the font name available for the debugger.
-    if (getDefaultSetting('pdfBug')) {
+    // `fontName` is only used by the FontInspector, and we only use `dataset`
+    // here to make the font name available in the debugger.
+    if (task._fontInspectorEnabled) {
       textDiv.dataset.fontName = geom.fontName;
     }
     if (angle !== 0) {
@@ -479,6 +477,8 @@ var renderTextLayer = (function renderTextLayerClosure() {
     this._textDivs = textDivs || [];
     this._textContentItemsStr = textContentItemsStr || [];
     this._enhanceTextSelection = !!enhanceTextSelection;
+    this._fontInspectorEnabled = !!(globalScope.FontInspector &&
+                                    globalScope.FontInspector.enabled);
 
     this._reader = null;
     this._layoutTextLastFontSize = null;