Add a "Simplify Page" option to the print preview dialog

components/dom_distiller/core/viewer.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/dom_distiller/core/viewer.h"
 
 #include <string>
 #include <vector>
 
 #include "base/json/json_writer.h"
@@ skipping 125 matching lines @@
                           GetFontCssClass(font_family));                  // $4
   substitutions.push_back(loading_indicator_class);                       // $5
   substitutions.push_back(original_url);                                  // $6
   substitutions.push_back(
       l10n_util::GetStringUTF8(IDS_DOM_DISTILLER_VIEWER_VIEW_ORIGINAL));  // $7
   substitutions.push_back(textDirection);                                 // $8
 
   return ReplaceStringPlaceholders(html_template, substitutions, NULL);
 }
 
+std::string ReplacePrintPreviewHtmlTemplateValues(
+    const std::string& title,
+    const std::string& textDirection,
+    const std::string& content,
+    const DistilledPagePrefs::Theme theme,
+    const DistilledPagePrefs::FontFamily font_family) {
+  base::StringPiece html_template =
+      ResourceBundle::GetSharedInstance().GetRawDataResource(
+          IDR_DOM_DISTILLER_PRINT_PREVIEW_HTML);
+
+  std::vector<std::string> substitutions;
+  substitutions.push_back(title);                                         // $1
+  substitutions.push_back(kPrintPreviewViewerCssPath);                    // $2
+  substitutions.push_back(GetThemeCssClass(theme) + " " +
+                          GetFontCssClass(font_family));                  // $3
+  substitutions.push_back(content);                                       // $4
+  substitutions.push_back(textDirection);                                 // $9
+  return ReplaceStringPlaceholders(html_template, substitutions, NULL);
+}
+
 }  // namespace
 
 namespace viewer {
 
 const std::string GetShowFeedbackFormJs() {
   base::StringValue question_val(
       l10n_util::GetStringUTF8(IDS_DOM_DISTILLER_QUALITY_QUESTION));
   base::StringValue no_val(
       l10n_util::GetStringUTF8(IDS_DOM_DISTILLER_QUALITY_ANSWER_NO));
   base::StringValue yes_val(
@@ skipping 79 matching lines @@
 
 const std::string GetErrorPageHtml(
     const DistilledPagePrefs::Theme theme,
     const DistilledPagePrefs::FontFamily font_family) {
   std::string title = l10n_util::GetStringUTF8(
       IDS_DOM_DISTILLER_VIEWER_FAILED_TO_FIND_ARTICLE_TITLE);
   return ReplaceHtmlTemplateValues(title, "auto", "hidden", "", theme,
                                    font_family);
 }
 
+const std::string GetUnsafePrintPreviewHtml(
+    const DistilledArticleProto* article_proto,
+    const DistilledPagePrefs::Theme theme,
+    const DistilledPagePrefs::FontFamily font_family) {
+  DCHECK(article_proto);
+  std::string title;
+  std::string unsafe_article_html;
+  std::string text_direction = "";
+  if (article_proto->has_title() && article_proto->pages_size() > 0 &&
+      article_proto->pages(0).has_html()) {
+    title = net::EscapeForHTML(article_proto->title());
+    std::ostringstream unsafe_output_stream;
+    for (int page_num = 0; page_num < article_proto->pages_size(); ++page_num) {
+      unsafe_output_stream << article_proto->pages(page_num).html();
+    }
+    unsafe_article_html = unsafe_output_stream.str();
+    text_direction = article_proto->pages(0).text_direction();
+  }
+
+  EnsureNonEmptyTitle(&title);
+  EnsureNonEmptyContent(&unsafe_article_html);
+
+  std::string original_url;
+  if (article_proto->pages_size() > 0 && article_proto->pages(0).has_url()) {
+    original_url = article_proto->pages(0).url();
+  }
+
+  return ReplacePrintPreviewHtmlTemplateValues(
+      title, text_direction, unsafe_article_html,
+      theme, font_family);
+}
+
 const std::string GetCss() {
   return ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_DISTILLER_CSS).as_string();
 }
 
+const std::string GetPrintPreviewCss() {
+  return ResourceBundle::GetSharedInstance().GetRawDataResource(
+          IDR_DISTILLER_PRINT_PREVIEW_CSS).as_string();
+}
+
 const std::string GetJavaScript() {
   return ResourceBundle::GetSharedInstance()
       .GetRawDataResource(IDR_DOM_DISTILLER_VIEWER_JS)
       .as_string();
 }
 
 scoped_ptr<ViewerHandle> CreateViewRequest(
     DomDistillerServiceInterface* dom_distiller_service,
     const std::string& path,
     ViewRequestDelegate* view_request_delegate,
@@ skipping 35 matching lines @@
 }
 
 const std::string GetDistilledPageFontFamilyJs(
     DistilledPagePrefs::FontFamily font_family) {
   return "useFontFamily('" + GetJsFontFamily(font_family) + "');";
 }
 
 }  // namespace viewer
 
 }  // namespace dom_distiller