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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "chrome/browser/ui/webui/ntp/core_app_launcher_handler.h"
      6 
      7 #include "base/bind.h"
      8 #include "base/metrics/histogram.h"
      9 #include "chrome/browser/profiles/profile.h"
     10 #include "chrome/browser/ui/webui/ntp/app_launcher_handler.h"
     11 #include "chrome/common/pref_names.h"
     12 #include "components/pref_registry/pref_registry_syncable.h"
     13 #include "content/public/browser/web_ui.h"
     14 #include "extensions/browser/extension_registry.h"
     15 #include "extensions/common/extension.h"
     16 #include "extensions/common/extension_set.h"
     17 #include "net/base/escape.h"
     18 
     19 namespace {
     20 const net::UnescapeRule::Type kUnescapeRules =
     21     net::UnescapeRule::NORMAL | net::UnescapeRule::URL_SPECIAL_CHARS;
     22 }
     23 
     24 CoreAppLauncherHandler::CoreAppLauncherHandler() {}
     25 
     26 CoreAppLauncherHandler::~CoreAppLauncherHandler() {}
     27 
     28 // static
     29 void CoreAppLauncherHandler::RecordAppLaunchType(
     30     extension_misc::AppLaunchBucket bucket,
     31     extensions::Manifest::Type app_type) {
     32   DCHECK_LT(bucket, extension_misc::APP_LAUNCH_BUCKET_BOUNDARY);
     33   if (app_type == extensions::Manifest::TYPE_PLATFORM_APP) {
     34     UMA_HISTOGRAM_ENUMERATION(extension_misc::kPlatformAppLaunchHistogram,
     35                               bucket,
     36                               extension_misc::APP_LAUNCH_BUCKET_BOUNDARY);
     37   } else {
     38     UMA_HISTOGRAM_ENUMERATION(extension_misc::kAppLaunchHistogram,
     39                               bucket,
     40                               extension_misc::APP_LAUNCH_BUCKET_BOUNDARY);
     41   }
     42 }
     43 
     44 // static
     45 void CoreAppLauncherHandler::RecordAppListSearchLaunch(
     46     const extensions::Extension* extension) {
     47   extension_misc::AppLaunchBucket bucket =
     48       extension_misc::APP_LAUNCH_APP_LIST_SEARCH;
     49   if (extension->id() == extension_misc::kWebStoreAppId)
     50     bucket = extension_misc::APP_LAUNCH_APP_LIST_SEARCH_WEBSTORE;
     51   else if (extension->id() == extension_misc::kChromeAppId)
     52     bucket = extension_misc::APP_LAUNCH_APP_LIST_SEARCH_CHROME;
     53   RecordAppLaunchType(bucket, extension->GetType());
     54 }
     55 
     56 // static
     57 void CoreAppLauncherHandler::RecordAppListMainLaunch(
     58     const extensions::Extension* extension) {
     59   extension_misc::AppLaunchBucket bucket =
     60       extension_misc::APP_LAUNCH_APP_LIST_MAIN;
     61   if (extension->id() == extension_misc::kWebStoreAppId)
     62     bucket = extension_misc::APP_LAUNCH_APP_LIST_MAIN_WEBSTORE;
     63   else if (extension->id() == extension_misc::kChromeAppId)
     64     bucket = extension_misc::APP_LAUNCH_APP_LIST_MAIN_CHROME;
     65   RecordAppLaunchType(bucket, extension->GetType());
     66 }
     67 
     68 // static
     69 void CoreAppLauncherHandler::RecordWebStoreLaunch() {
     70   RecordAppLaunchType(extension_misc::APP_LAUNCH_NTP_WEBSTORE,
     71                       extensions::Manifest::TYPE_HOSTED_APP);
     72 }
     73 
     74 // static
     75 void CoreAppLauncherHandler::RegisterProfilePrefs(
     76     user_prefs::PrefRegistrySyncable* registry) {
     77   registry->RegisterListPref(prefs::kNtpAppPageNames,
     78                              user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
     79 }
     80 
     81 void CoreAppLauncherHandler::HandleRecordAppLaunchByUrl(
     82     const base::ListValue* args) {
     83   std::string url;
     84   CHECK(args->GetString(0, &url));
     85   double source;
     86   CHECK(args->GetDouble(1, &source));
     87 
     88   extension_misc::AppLaunchBucket bucket =
     89       static_cast<extension_misc::AppLaunchBucket>(static_cast<int>(source));
     90   CHECK(source < extension_misc::APP_LAUNCH_BUCKET_BOUNDARY);
     91 
     92   RecordAppLaunchByUrl(Profile::FromWebUI(web_ui()), url, bucket);
     93 }
     94 
     95 void CoreAppLauncherHandler::RecordAppLaunchByUrl(
     96     Profile* profile,
     97     std::string escaped_url,
     98     extension_misc::AppLaunchBucket bucket) {
     99   CHECK(bucket != extension_misc::APP_LAUNCH_BUCKET_INVALID);
    100 
    101   GURL url(net::UnescapeURLComponent(escaped_url, kUnescapeRules));
    102   if (!extensions::ExtensionRegistry::Get(profile)
    103           ->enabled_extensions().GetAppByURL(url)) {
    104     return;
    105   }
    106 
    107   RecordAppLaunchType(bucket, extensions::Manifest::TYPE_HOSTED_APP);
    108 }
    109 
    110 void CoreAppLauncherHandler::RegisterMessages() {
    111   web_ui()->RegisterMessageCallback("recordAppLaunchByURL",
    112       base::Bind(&CoreAppLauncherHandler::HandleRecordAppLaunchByUrl,
    113                  base::Unretained(this)));
    114 }
    115