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
21ContextMenuHandler::ContextMenuHandler()
22    : weak_ptr_factory_(this) {
23}
24
25ContextMenuHandler::~ContextMenuHandler() {
26}
27
28void 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
43void ContextMenuHandler::OnItemSelected(int item_id) {
44  base::FundamentalValue value(item_id);
45  web_ui()->CallJavascriptFunction("ntp.onCustomMenuSelected", value);
46}
47
48void ContextMenuHandler::GetIncognitoDisabled(
49    const ListValue* args) {
50  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
64void ContextMenuHandler::HandleShowContextMenu(
65    const 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    ListValue* item_list_value = NULL;
78    bool valid_value = menu_list_values->GetList(
79        i, const_cast<const 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      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      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
119void ContextMenuHandler::HandleOpenInNewTab(const ListValue* args) {
120  OpenUrl(args, NEW_FOREGROUND_TAB);
121}
122
123void ContextMenuHandler::HandleOpenInIncognitoTab(const ListValue* args) {
124  OpenUrl(args, OFF_THE_RECORD);
125}
126
127void ContextMenuHandler::OpenUrl(const 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}
136