chrome/browser/ui/webui/ntp/android/context_menu_handler.cc

   1 // Copyright (c) 2012 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/android/context_menu_handler.h"
   6
   7 #include "base/bind.h"
   8 #include "base/prefs/pref_service.h"
   9 #include "base/strings/string16.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "base/values.h"
  12 #include "chrome/browser/prefs/incognito_mode_prefs.h"
  13 #include "chrome/browser/profiles/profile.h"
  14 #include "chrome/browser/ui/android/context_menu_helper.h"
  15 #include "chrome/common/pref_names.h"
  16 #include "content/public/browser/user_metrics.h"
  17 #include "content/public/browser/web_contents.h"
  18 #include "content/public/common/context_menu_params.h"
  19 #include "content/public/common/page_transition_types.h"
  20
  21 ContextMenuHandler::ContextMenuHandler()
  22     : weak_ptr_factory_(this) {
  23 }
  24
  25 ContextMenuHandler::~ContextMenuHandler() {
  26 }
  27
  28 void ContextMenuHandler::RegisterMessages() {
  29   web_ui()->RegisterMessageCallback("showContextMenu",
  30       base::Bind(&ContextMenuHandler::HandleShowContextMenu,
  31                  base::Unretained(this)));
  32   web_ui()->RegisterMessageCallback("openInNewTab",
  33       base::Bind(&ContextMenuHandler::HandleOpenInNewTab,
  34                  base::Unretained(this)));
  35   web_ui()->RegisterMessageCallback("openInIncognitoTab",
  36       base::Bind(&ContextMenuHandler::HandleOpenInIncognitoTab,
  37                  base::Unretained(this)));
  38   web_ui()->RegisterMessageCallback("getIncognitoDisabled",
  39       base::Bind(&ContextMenuHandler::GetIncognitoDisabled,
  40                  base::Unretained(this)));
  41 }
  42
  43 void ContextMenuHandler::OnItemSelected(int item_id) {
  44   base::FundamentalValue value(item_id);
  45   web_ui()->CallJavascriptFunction("ntp.onCustomMenuSelected", value);
  46 }
  47
  48 void ContextMenuHandler::GetIncognitoDisabled(
  49     const base::ListValue* args) {
  50   base::DictionaryValue value;
  51
  52   const PrefService* pref = Profile::FromBrowserContext(
  53       web_ui()->GetWebContents()->GetBrowserContext())->GetPrefs();
  54
  55   // Tell to ntp_android.js whether "open in new incognito tab" is allowed or
  56   // not in different context menus. This property can be disabled by
  57   // preferences (e.g. via policies).
  58   int pref_value = pref->GetInteger(prefs::kIncognitoModeAvailability);
  59   bool incognito_enabled = pref_value != IncognitoModePrefs::DISABLED;
  60   value.SetBoolean("incognitoEnabled", incognito_enabled);
  61   web_ui()->CallJavascriptFunction("ntp.setIncognitoEnabled", value);
  62 }
  63
  64 void ContextMenuHandler::HandleShowContextMenu(
  65     const base::ListValue* menu_list_values) {
  66   if (menu_list_values->empty()) {
  67     LOG(WARNING) << "Ignoring request for empty context menu.";
  68     return;
  69   }
  70
  71   // We expect menu_list_values to be of the form:
  72   // [ [ 1, "title1" ], [ 2, "title2" ], ...]
  73   // Where the first value in the sub-array is the item id and the second its
  74   // title.
  75   content::ContextMenuParams menu;
  76   for (size_t i = 0; i < menu_list_values->GetSize(); ++i) {
  77     base::ListValue* item_list_value = NULL;
  78     bool valid_value = menu_list_values->GetList(
  79         i, const_cast<const base::ListValue**>(&item_list_value));
  80     if (!valid_value) {
  81       LOG(ERROR) << "Invalid context menu request: menu item info " << i <<
  82           " is not a list.";
  83       return;
  84     }
  85
  86     int id;
  87     if (!ExtractIntegerValue(item_list_value, &id)) {
  88       base::Value* value = NULL;
  89       item_list_value->Get(0, &value);
  90       LOG(ERROR) << "Invalid context menu request:  menu item " << i <<
  91           " expected int value for first parameter (got " <<
  92           value->GetType() << ").";
  93       return;
  94     }
  95
  96     content::MenuItem menu_item;
  97     menu_item.action = id;
  98     if (!item_list_value->GetString(1, &(menu_item.label))) {
  99       base::Value* value = NULL;
 100       item_list_value->Get(1, &value);
 101       LOG(ERROR) << "Invalid context menu request:  menu item " << i <<
 102           " expected string value for second parameter (got " <<
 103           value->GetType() << ").";
 104       return;
 105     }
 106     menu.custom_items.push_back(menu_item);
 107   }
 108
 109   ContextMenuHelper* context_menu_helper =
 110       ContextMenuHelper::FromWebContents(web_ui()->GetWebContents());
 111   if (context_menu_helper) {
 112     context_menu_helper->ShowCustomContextMenu(
 113         menu,
 114         base::Bind(&ContextMenuHandler::OnItemSelected,
 115                    weak_ptr_factory_.GetWeakPtr()));
 116   }
 117 }
 118
 119 void ContextMenuHandler::HandleOpenInNewTab(const base::ListValue* args) {
 120   OpenUrl(args, NEW_FOREGROUND_TAB);
 121 }
 122
 123 void ContextMenuHandler::HandleOpenInIncognitoTab(const base::ListValue* args) {
 124   OpenUrl(args, OFF_THE_RECORD);
 125 }
 126
 127 void ContextMenuHandler::OpenUrl(const base::ListValue* args,
 128                                  WindowOpenDisposition disposition) {
 129   base::string16 url = ExtractStringValue(args);
 130   if (!url.empty()) {
 131     web_ui()->GetWebContents()->OpenURL(content::OpenURLParams(
 132         GURL(url), content::Referrer(), disposition,
 133         content::PAGE_TRANSITION_AUTO_BOOKMARK, false));
 134   }
 135 }