// Copyright 2026 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "extensions/browser/mime_handler/mime_handler_page.h" #include #include #include "base/strings/stringprintf.h" #include "content/public/common/buildflags.h" #include "content/public/common/webplugininfo.h" #include "pdf/buildflags.h" #include "third_party/skia/include/core/SkColor.h" #include "url/gurl.h" #if BUILDFLAG(ENABLE_PDF) #include "base/strings/string_util.h" #include "components/grit/components_resources.h" // nogncheck #include "ui/base/resource/resource_bundle.h" #endif #if BUILDFLAG(ENABLE_PLUGINS) #include "content/public/browser/plugin_service.h" #endif namespace extensions { namespace { // TODO(crbug.com/40490789): Make this a proper resource. constexpr char kFullPageMimeHandlerViewHTML[] = "

"; // Generic iframe-based template for Generic MIME handlers (non-OOPIF PDF). constexpr char kOopifMimeHandlerViewHTML[] = "" ""; SkColor GetBackgroundColorStringForMimeType(const GURL& url, const std::string& mime_type) { #if BUILDFLAG(ENABLE_PLUGINS) std::vector web_plugin_info_array; std::vector unused_actual_mime_types; content::PluginService::GetInstance()->GetPluginInfoArray( url, mime_type, &web_plugin_info_array, &unused_actual_mime_types); if (!web_plugin_info_array.empty()) { return web_plugin_info_array.front().background_color; } #endif return content::WebPluginInfo::kDefaultBackgroundColor; } } // namespace std::string CreateTemplateMimeHandlerPage(const GURL& resource_url, const std::string& mime_type, const std::string& internal_id, bool use_oopif, bool is_oopif_pdf) { #if BUILDFLAG(ENABLE_PDF) if (is_oopif_pdf) { std::string pdf_embedder_html = ui::ResourceBundle::GetSharedInstance().LoadDataResourceString( IDR_PDF_EMBEDDER_HTML); return base::ReplaceStringPlaceholders( pdf_embedder_html, {internal_id, mime_type, internal_id}, /*offsets=*/nullptr); } #endif if (use_oopif) { return base::StringPrintf(kOopifMimeHandlerViewHTML, internal_id.c_str(), mime_type.c_str(), internal_id.c_str()); } auto color = GetBackgroundColorStringForMimeType(resource_url, mime_type); return base::StringPrintf(kFullPageMimeHandlerViewHTML, SkColorGetR(color), SkColorGetG(color), SkColorGetB(color), internal_id.c_str(), mime_type.c_str(), internal_id.c_str()); } } // namespace extensions