Refactors FindController dependencies.

examples/components/simpleviewer.js

@@ -30,6 +30,7 @@ PDFJS.workerSrc = '../../build/pdf.worker.js';
 // PDFJS.cMapPacked = true;
 
 var DEFAULT_URL = '../../web/compressed.tracemonkey-pldi-09.pdf';
+var SEARCH_FOR = ''; // try 'Mozilla';
 
 var container = document.getElementById('viewerContainer');
 
@@ -42,9 +43,19 @@ var pdfViewer = new PDFJS.PDFViewer({
 });
 pdfLinkService.setViewer(pdfViewer);
 
+// (Optionally) enable find controller.
+var pdfFindController = new PDFJS.PDFFindController({
+  pdfViewer: pdfViewer
+});
+pdfViewer.setFindController(pdfFindController);
+
 container.addEventListener('pagesinit', function () {
   // We can use pdfViewer now, e.g. let's change default scale.
   pdfViewer.currentScaleValue = 'page-width';
+
+  if (SEARCH_FOR) { // We can try search for things
+    pdfFindController.executeCommand('find', {query: SEARCH_FOR});
+  }
 });
 
 // Loading document.

make.js

@@ -179,6 +179,7 @@ target.components = function() {
   var bundleFiles = [
     'pdf_viewer.js',
     'pdf_history.js',
+    'pdf_find_controller.js',
     'download_manager.js'
   ];
   bundle('pdf_viewer.component.js', ROOT_DIR + TMP_PDF_VIEWER, bundleFiles,

web/app.js

@@ -204,9 +204,24 @@ var PDFViewerApplication = {
     pdfLinkService.setHistory(this.pdfHistory);
 
     this.findController = new PDFFindController({
-      pdfViewer: this.pdfViewer,
-      integratedFind: this.supportsIntegratedFind
+      pdfViewer: this.pdfViewer
     });
+    this.findController.onUpdateResultsCount = function (matchCount) {
+      if (this.supportsIntegratedFind) {
+        return;
+      }
+      this.findBar.updateResultsCount(matchCount);
+    }.bind(this);
+    this.findController.onUpdateState = function (state, previous, matchCount) {
+      if (this.supportsIntegratedFind) {
+        FirefoxCom.request('updateFindControlState',
+                           {result: state, findPrevious: previous});
+      } else {
+        this.findBar.updateUIState(state, previous, matchCount);
+      }
+    }.bind(this);
+    this.findController.listenWindowEvents();
+
     this.pdfViewer.setFindController(this.findController);
 
     // FIXME better PDFFindBar constructor parameters
@@ -214,8 +229,6 @@ var PDFViewerApplication = {
     findBarConfig.findController = this.findController;
     this.findBar = new PDFFindBar(findBarConfig);
 
-    this.findController.setFindBar(this.findBar);
-
     this.overlayManager = OverlayManager;
 
     this.handTool = new HandTool({

web/pdf_find_controller.js

@@ -17,18 +17,16 @@
 
 (function (root, factory) {
   if (typeof define === 'function' && define.amd) {
-    define('pdfjs-web/pdf_find_controller', ['exports',
-      'pdfjs-web/ui_utils', 'pdfjs-web/firefoxcom'], factory);
+    define('pdfjs-web/pdf_find_controller', ['exports', 'pdfjs-web/ui_utils'],
+      factory);
   } else if (typeof exports !== 'undefined') {
-    factory(exports, require('./ui_utils.js'), require('./firefoxcom.js'));
+    factory(exports, require('./ui_utils.js'));
   } else {
-    factory((root.pdfjsWebPDFFindController = {}), root.pdfjsWebUIUtils,
-      root.pdfjsWebFirefoxCom);
+    factory((root.pdfjsWebPDFFindController = {}), root.pdfjsWebUIUtils);
   }
 }(this, function (exports, uiUtils, firefoxCom) {
 
 var scrollIntoView = uiUtils.scrollIntoView;
-var FirefoxCom = firefoxCom.FirefoxCom;
 
 var FindStates = {
   FIND_FOUND: 0,
@@ -61,31 +59,32 @@ var CHARACTERS_TO_NORMALIZE = {
 var PDFFindController = (function PDFFindControllerClosure() {
   function PDFFindController(options) {
     this.pdfViewer = options.pdfViewer || null;
-    this.integratedFind = options.integratedFind || false;
-    this.findBar = options.findBar || null;
+
+    this.onUpdateResultsCount = null;
+    this.onUpdateState = null;
 
     this.reset();
 
     // Compile the regular expression for text normalization once.
     var replace = Object.keys(CHARACTERS_TO_NORMALIZE).join('');
     this.normalizationRegex = new RegExp('[' + replace + ']', 'g');
-
-    var events = [
-      'find',
-      'findagain',
-      'findhighlightallchange',
-      'findcasesensitivitychange'
-    ];
-    this.handleEvent = this.handleEvent.bind(this);
-
-    for (var i = 0, len = events.length; i < len; i++) {
-      window.addEventListener(events[i], this.handleEvent);
-    }
   }
 
   PDFFindController.prototype = {
-    setFindBar: function PDFFindController_setFindBar(findBar) {
-      this.findBar = findBar;
+    listenWindowEvents: function PDFFindController_listenWindowEvents() {
+      var events = [
+        'find',
+        'findagain',
+        'findhighlightallchange',
+        'findcasesensitivitychange'
+      ];
+      var handleEvent = function (e) {
+        this.executeCommand(e.type, e.detail);
+      }.bind(this);
+
+      for (var i = 0, len = events.length; i < len; i++) {
+        window.addEventListener(events[i], handleEvent);
+      }
     },
 
     reset: function PDFFindController_reset() {
@@ -199,18 +198,18 @@ var PDFFindController = (function PDFFindControllerClosure() {
       extractPageText(0);
     },
 
-    handleEvent: function PDFFindController_handleEvent(e) {
-      if (this.state === null || e.type !== 'findagain') {
+    executeCommand: function PDFFindController_executeCommand(cmd, state) {
+      if (this.state === null || cmd !== 'findagain') {
         this.dirtyMatch = true;
       }
-      this.state = e.detail;
+      this.state = state;
       this.updateUIState(FindStates.FIND_PENDING);
 
       this.firstPagePromise.then(function() {
         this.extractText();
 
         clearTimeout(this.findTimeout);
-        if (e.type === 'find') {
+        if (cmd === 'find') {
           // Only trigger the find action after 250ms of silence.
           this.findTimeout = setTimeout(this.nextMatch.bind(this), 250);
         } else {
@@ -408,24 +407,15 @@ var PDFFindController = (function PDFFindControllerClosure() {
 
     updateUIResultsCount:
         function PDFFindController_updateUIResultsCount() {
-      if (this.findBar === null) {
-        throw new Error('PDFFindController is not initialized with a ' +
-          'PDFFindBar instance.');
+      if (this.onUpdateResultsCount) {
+        this.onUpdateResultsCount(this.matchCount);
       }
-      this.findBar.updateResultsCount(this.matchCount);
     },
 
     updateUIState: function PDFFindController_updateUIState(state, previous) {
-      if (this.integratedFind) {
-        FirefoxCom.request('updateFindControlState',
-                           { result: state, findPrevious: previous });
-        return;
+      if (this.onUpdateState) {
+        this.onUpdateState(state, previous, this.matchCount);
       }
-      if (this.findBar === null) {
-        throw new Error('PDFFindController is not initialized with a ' +
-                        'PDFFindBar instance.');
-      }
-      this.findBar.updateUIState(state, previous, this.matchCount);
     }
   };
   return PDFFindController;

web/pdf_viewer.component.js

@@ -50,6 +50,8 @@
   PDFJS.DefaultAnnotationLayerFactory =
     pdfViewerLibs.pdfjsWebAnnotationLayerBuilder.DefaultAnnotationLayerFactory;
   PDFJS.PDFHistory = pdfViewerLibs.pdfjsWebPDFHistory.PDFHistory;
+  PDFJS.PDFFindController =
+    pdfViewerLibs.pdfjsWebPDFFindController.PDFFindController;
 
   PDFJS.DownloadManager = pdfViewerLibs.pdfjsWebDownloadManager.DownloadManager;
   PDFJS.ProgressBar = pdfViewerLibs.pdfjsWebUIUtils.ProgressBar;