Add ErrorConsole UI for Extension Install Warnings

chrome/browser/ui/webui/extensions/extension_error_handler.cc

Index: chrome/browser/ui/webui/extensions/extension_error_handler.cc
diff --git a/chrome/browser/ui/webui/extensions/extension_error_handler.cc b/chrome/browser/ui/webui/extensions/extension_error_handler.cc
new file mode 100644
index 0000000000000000000000000000000000000000..530801193f68689f368794c73a600b004dca7b45
--- /dev/null
+++ b/chrome/browser/ui/webui/extensions/extension_error_handler.cc
@@ -0,0 +1,175 @@
+// Copyright 2013 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 "chrome/browser/ui/webui/extensions/extension_error_handler.h"
+
+#include "base/bind.h"
+#include "base/file_util.h"
+#include "base/files/file_path.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/extension_system.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/extensions/extension.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/web_ui.h"
+#include "content/public/browser/web_ui_data_source.h"
+#include "extensions/browser/manifest_highlighter.h"
+#include "grit/generated_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+
+namespace extensions {
+
+namespace {
+
+// Keys for objects passed to and from extension error UI.
+const char kExtensionIdKey[] = "extensionId";
+const char kPathSuffixKey[] = "pathSuffix";
+const char kErrorMessageKey[] = "errorMessage";
+const char kFileTypeKey[] = "fileType";
+const char kFeatureKey[] = "feature";
+const char kSpecificKey[] = "specific";
+const char kManifestFileType[] = "manifest";
+const char kTitleKey[] = "title";
+const char kBeforeHighlightKey[] = "beforeHighlight";
+const char kHighlightKey[] = "highlight";
+const char kAfterHighlightKey[] = "afterHighlight";
+
+// Populate a DictionaryValue with the highlighted portions for the callback to
+// ExtensionErrorOverlay, given the components.
+void AddHighlightedToDictionaryForOverlay(base::DictionaryValue* dict,
+                                          const std::string& before_highlight,
+                                          const std::string& highlight,
+                                          const std::string& after_highlight) {
+  if (!before_highlight.empty())
+    dict->SetString(kBeforeHighlightKey, base::UTF8ToUTF16(before_highlight));
+  if (!highlight.empty())
+    dict->SetString(kHighlightKey, base::UTF8ToUTF16(highlight));
+  if (!after_highlight.empty())
+    dict->SetString(kAfterHighlightKey, base::UTF8ToUTF16(after_highlight));
+}
+
+}  // namespace
+
+ExtensionErrorHandler::ExtensionErrorHandler(Profile* profile)
+    : profile_(profile) {
+}
+
+ExtensionErrorHandler::~ExtensionErrorHandler() {
+}
+
+void ExtensionErrorHandler::GetLocalizedValues(
+    content::WebUIDataSource* source) {
+  source->AddString(
+      "extensionErrorsManifestErrors",
+      l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERRORS_MANIFEST_ERRORS));
+  source->AddString(
+      "extensionErrorsShowMore",
+      l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERRORS_SHOW_MORE));
+  source->AddString(
+      "extensionErrorsShowFewer",
+      l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERRORS_SHOW_FEWER));
+  source->AddString(
+      "extensionErrorViewSource",
+      l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERROR_VIEW_SOURCE));
+}
+
+void ExtensionErrorHandler::RegisterMessages() {
+  web_ui()->RegisterMessageCallback(
+      "extensionErrorRequestFileSource",
+      base::Bind(&ExtensionErrorHandler::HandleRequestFileSource,
+                 base::Unretained(this)));
+}
+
+void ExtensionErrorHandler::HandleRequestFileSource(
+    const base::ListValue* args) {
+  // There should only be one argument, a dictionary. Use this instead of a list
+  // because it's more descriptive, harder to accidentally break with minor
+  // modifications, and supports optional arguments more easily.
+  CHECK(args->GetSize() == 1);
+
+  const base::DictionaryValue* dict = NULL;
+
+  // Four required arguments: extension_id, path_suffix, error_message, and
+  // file_type.
+  std::string extension_id;
+  base::FilePath::StringType path_suffix;
+  base::string16 error_message;
+  std::string file_type;
+
+  if (!args->GetDictionary(0, &dict) ||
+      !dict->GetString(kExtensionIdKey, &extension_id) ||
+      !dict->GetString(kPathSuffixKey, &path_suffix) ||
+      !dict->GetString(kErrorMessageKey, &error_message) ||
+      !dict->GetString(kFileTypeKey, &file_type)) {
+    NOTREACHED();
+    return;
+  }
+
+  const Extension* extension =
+      ExtensionSystem::Get(Profile::FromWebUI(web_ui()))->
+      extension_service()->GetExtensionById(extension_id,
+                                            true /* include disabled */ );
+  base::FilePath path = extension->path().Append(path_suffix);
+
+  // Setting the title and the error message is the same for all file types.
+  scoped_ptr<base::DictionaryValue> results(new base::DictionaryValue);
+  results->SetString(kTitleKey,
+                     base::UTF8ToUTF16(extension->name()) +
+                         base::ASCIIToUTF16(": ") +
+                         path.BaseName().LossyDisplayName());
+  results->SetString(kErrorMessageKey, error_message);
+
+  base::Closure closure;
+  std::string* contents = NULL;
+
+  if (file_type == kManifestFileType) {
+    std::string feature;
+    std::string specific;
+    if (!dict->GetString(kFeatureKey, &feature)) {
+      NOTREACHED();
+      return;
+    }
+    // A "specific" location is optional.
+    dict->GetString(kSpecificKey, &specific);
+
+    contents = new std::string;  // Owned by GetManifestFileCallback()
+    closure = base::Bind(&ExtensionErrorHandler::GetManifestFileCallback,
+                         base::Unretained(this),
+                         base::Owned(results.release()),
+                         feature,
+                         specific,
+                         base::Owned(contents));
+  } else {  // currently, only manifest file types supported.
+    NOTREACHED();
+    return;
+  }
+
+  content::BrowserThread::PostBlockingPoolTaskAndReply(
+      FROM_HERE,
+      base::Bind(base::IgnoreResult(&file_util::ReadFileToString),
+                 path,
+                 contents),
+      closure);
+}
+
+void ExtensionErrorHandler::GetManifestFileCallback(
+    base::DictionaryValue* results,
+    const std::string& key,
+    const std::string& specific,
+    std::string* contents) {
+  ManifestHighlighter highlighter(*contents, key, specific);
+
+  AddHighlightedToDictionaryForOverlay(
+      results,
+      highlighter.GetBeforeFeature(),
+      highlighter.GetFeature(),
+      highlighter.GetAfterFeature());
+
+  web_ui()->CallJavascriptFunction(
+      "extensions.ExtensionErrorOverlay.requestFileSourceResponse", *results);
+}
+
+}  // namespace extensions