Upstream version 7.36.149.0
[platform/framework/web/crosswalk.git] / src / chrome / browser / ui / singleton_tabs.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/singleton_tabs.h"
6
7 #include "chrome/browser/profiles/profile.h"
8 #include "chrome/browser/search/search.h"
9 #include "chrome/browser/ui/browser.h"
10 #include "chrome/browser/ui/browser_navigator.h"
11 #include "chrome/browser/ui/tabs/tab_strip_model.h"
12 #include "chrome/common/url_constants.h"
13 #include "content/public/browser/browser_url_handler.h"
14 #include "content/public/browser/web_contents.h"
15
16 namespace chrome {
17 namespace {
18
19 // Returns true if two URLs are equal after taking |replacements| into account.
20 bool CompareURLsWithReplacements(const GURL& url,
21                                  const GURL& other,
22                                  const url::Replacements<char>& replacements) {
23   if (url == other)
24     return true;
25
26   GURL url_replaced = url.ReplaceComponents(replacements);
27   GURL other_replaced = other.ReplaceComponents(replacements);
28   return url_replaced == other_replaced;
29 }
30
31 }  // namespace
32
33 void ShowSingletonTab(Browser* browser, const GURL& url) {
34   NavigateParams params(GetSingletonTabNavigateParams(browser, url));
35   Navigate(&params);
36 }
37
38 void ShowSingletonTabRespectRef(Browser* browser, const GURL& url) {
39   NavigateParams params(GetSingletonTabNavigateParams(browser, url));
40   params.ref_behavior = NavigateParams::RESPECT_REF;
41   Navigate(&params);
42 }
43
44 void ShowSingletonTabOverwritingNTP(Browser* browser,
45                                     const NavigateParams& params) {
46   DCHECK(browser);
47   NavigateParams local_params(params);
48   content::WebContents* contents =
49       browser->tab_strip_model()->GetActiveWebContents();
50   if (contents) {
51     const GURL& contents_url = contents->GetURL();
52     if ((contents_url == GURL(kChromeUINewTabURL) || IsInstantNTP(contents) ||
53          contents_url == GURL(content::kAboutBlankURL)) &&
54         GetIndexOfSingletonTab(&local_params) < 0) {
55       local_params.disposition = CURRENT_TAB;
56     }
57   }
58
59   Navigate(&local_params);
60 }
61
62 NavigateParams GetSingletonTabNavigateParams(Browser* browser,
63                                              const GURL& url) {
64   NavigateParams params(browser, url, content::PAGE_TRANSITION_AUTO_BOOKMARK);
65   params.disposition = SINGLETON_TAB;
66   params.window_action = NavigateParams::SHOW_WINDOW;
67   params.user_gesture = true;
68   params.tabstrip_add_types |= TabStripModel::ADD_INHERIT_OPENER;
69   return params;
70 }
71
72 // Returns the index of an existing singleton tab in |params->browser| matching
73 // the URL specified in |params|.
74 int GetIndexOfSingletonTab(NavigateParams* params) {
75   if (params->disposition != SINGLETON_TAB)
76     return -1;
77
78   // In case the URL was rewritten by the BrowserURLHandler we need to ensure
79   // that we do not open another URL that will get redirected to the rewritten
80   // URL.
81   GURL rewritten_url(params->url);
82   bool reverse_on_redirect = false;
83   content::BrowserURLHandler::GetInstance()->RewriteURLIfNecessary(
84       &rewritten_url,
85       params->browser->profile(),
86       &reverse_on_redirect);
87
88   // If there are several matches: prefer the active tab by starting there.
89   int start_index =
90       std::max(0, params->browser->tab_strip_model()->active_index());
91   int tab_count = params->browser->tab_strip_model()->count();
92   for (int i = 0; i < tab_count; ++i) {
93     int tab_index = (start_index + i) % tab_count;
94     content::WebContents* tab =
95         params->browser->tab_strip_model()->GetWebContentsAt(tab_index);
96
97     GURL tab_url = tab->GetURL();
98
99     // Skip view-source tabs. This is needed because RewriteURLIfNecessary
100     // removes the "view-source:" scheme which leads to incorrect matching.
101     if (tab_url.SchemeIs(content::kViewSourceScheme))
102       continue;
103
104     GURL rewritten_tab_url = tab_url;
105     content::BrowserURLHandler::GetInstance()->RewriteURLIfNecessary(
106       &rewritten_tab_url,
107       params->browser->profile(),
108       &reverse_on_redirect);
109
110     url::Replacements<char> replacements;
111     if (params->ref_behavior == NavigateParams::IGNORE_REF)
112       replacements.ClearRef();
113     if (params->path_behavior == NavigateParams::IGNORE_AND_NAVIGATE ||
114         params->path_behavior == NavigateParams::IGNORE_AND_STAY_PUT) {
115       replacements.ClearPath();
116       replacements.ClearQuery();
117     }
118
119     if (CompareURLsWithReplacements(tab_url, params->url, replacements) ||
120         CompareURLsWithReplacements(rewritten_tab_url,
121                                     rewritten_url,
122                                     replacements)) {
123       params->target_contents = tab;
124       return tab_index;
125     }
126   }
127
128   return -1;
129 }
130
131 }  // namespace chrome