OOP PDF - Add OpenPDFParamsParser class

chrome/browser/resources/pdf/pdf.js

Index: chrome/browser/resources/pdf/pdf.js
diff --git a/chrome/browser/resources/pdf/pdf.js b/chrome/browser/resources/pdf/pdf.js
index c5920f877dc10c80a416c95c23b8fb7ab4ebc105..2bb5511402abe108e48da0d5f28c52449bf086c0 100644
--- a/chrome/browser/resources/pdf/pdf.js
+++ b/chrome/browser/resources/pdf/pdf.js
@@ -5,6 +5,7 @@
 'use strict';
 
 <include src="../../../../ui/webui/resources/js/util.js">
+<include src="open_pdf_params_parser.js">
 <include src="pdf_scripting_api.js">
 <include src="viewport.js">
 
@@ -150,6 +151,10 @@ function PDFViewer() {
         this.viewport_.setZoom(zoomChangeInfo.newZoomFactor);
     }.bind(this));
   }
+
+  // Parse open pdf parameters.
+  var paramsParser = new OpenPDFParamsParser(this.streamDetails.originalUrl);
+  this.urlParams_ = paramsParser.urlParams;
 }
 
 PDFViewer.prototype = {
@@ -265,37 +270,6 @@ PDFViewer.prototype = {
 
   /**
    * @private
-   * Handle open PDF parameters. These parameters are mentioned in the URL
-   * and specify actions to be performed when opening PDF files.
-   * See http://crbug.com/64309 for details.
-   */
-  handleOpenPDFParams_: function() {
-    var originalUrl = this.streamDetails.originalUrl;
-    var paramIndex = originalUrl.search('#');
-    if (paramIndex == -1)
-      return;
-
-    var paramTokens = originalUrl.substring(paramIndex + 1).split('&');
-    var paramsDictionary = {};
-    for (var i = 0; i < paramTokens.length; ++i) {
-      var keyValueSplit = paramTokens[i].split('=');
-      if (keyValueSplit.length != 2)
-        continue;
-      paramsDictionary[keyValueSplit[0]] = keyValueSplit[1];
-    }
-
-    // Order is important as later actions can override the effects
-    // of previous actions.
-    if ('page' in paramsDictionary) {
-      // |pageNumber| is 1-based, but goToPage() take a zero-based page number.
-      var pageNumber = parseInt(paramsDictionary['page']);
-      if (!isNaN(pageNumber))
-        this.viewport_.goToPage(pageNumber - 1);
-    }
-  },
-
-  /**
-   * @private
    * Update the loading progress of the document in response to a progress
    * message being received from the plugin.
    * @param {number} progress the progress as a percentage.
@@ -313,7 +287,6 @@ PDFViewer.prototype = {
       }
     } else if (progress == 100) {
       // Document load complete.
-      this.handleOpenPDFParams_();
       this.loaded = true;
       var loadEvent = new Event('pdfload');
       window.dispatchEvent(loadEvent);
@@ -322,6 +295,11 @@ PDFViewer.prototype = {
       });
       if (this.lastViewportPosition_)
         this.viewport_.position = this.lastViewportPosition_;
+
+      // Handle open pdf params. Order is important as later actions can
+      // override the effects of previous actions.
+      if (this.urlParams_.page)
+        this.viewport_.goToPage(this.urlParams_.page);
     }
   },