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// Copyright (c) 2012 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/tabs/pinned_tab_codec.h"
#include "base/values.h"
#include "chrome/browser/extensions/tab_helper.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/prefs/scoped_user_pref_update.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/tab_contents/tab_contents.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/pref_names.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/web_contents.h"
using content::NavigationEntry;
// Key used in dictionaries for the app id.
static const char kAppID[] = "app_id";
// Key used in dictionaries for the url.
static const char kURL[] = "url";
// Returns true if |browser| has any pinned tabs.
static bool HasPinnedTabs(Browser* browser) {
TabStripModel* tab_model = browser->tab_strip_model();
for (int i = 0; i < tab_model->count(); ++i) {
if (tab_model->IsTabPinned(i))
return true;
}
return false;
}
// Adds a DictionaryValue to |values| representing |tab|.
static void EncodeTab(const StartupTab& tab, ListValue* values) {
scoped_ptr<DictionaryValue> value(new DictionaryValue);
value->SetString(kURL, tab.url.spec());
if (tab.is_app)
value->SetString(kAppID, tab.app_id);
values->Append(value.release());
}
// Adds a DictionaryValue to |values| representing the pinned tab at the
// specified index.
static void EncodePinnedTab(TabStripModel* model,
int index,
ListValue* values) {
scoped_ptr<DictionaryValue> value(new DictionaryValue());
TabContents* tab_contents = model->GetTabContentsAt(index);
if (model->IsAppTab(index)) {
const extensions::Extension* extension =
tab_contents->extension_tab_helper()->extension_app();
DCHECK(extension);
value->SetString(kAppID, extension->id());
// For apps we use the launch url. We do this for the following reason:
// . the user is effectively restarting the app, so that returning them to
// the app's launch page seems closest to what they expect.
value->SetString(kURL, extension->GetFullLaunchURL().spec());
values->Append(value.release());
} else {
NavigationEntry* entry =
tab_contents->web_contents()->GetController().GetActiveEntry();
if (!entry && tab_contents->web_contents()->GetController().GetEntryCount())
entry = tab_contents->web_contents()->GetController().GetEntryAtIndex(0);
if (entry) {
value->SetString(kURL, entry->GetURL().spec());
values->Append(value.release());
}
}
}
// Invokes EncodePinnedTab for each pinned tab in browser.
static void EncodePinnedTabs(Browser* browser, ListValue* values) {
TabStripModel* tab_model = browser->tab_strip_model();
for (int i = 0; i < tab_model->count() && tab_model->IsTabPinned(i); ++i)
EncodePinnedTab(tab_model, i, values);
}
// Decodes the previously written values in |value| to |tab|, returning true
// on success.
static bool DecodeTab(const DictionaryValue& value, StartupTab* tab) {
tab->is_app = false;
std::string url_string;
if (!value.GetString(kURL, &url_string))
return false;
tab->url = GURL(url_string);
if (value.GetString(kAppID, &(tab->app_id)))
tab->is_app = true;
return true;
}
// static
void PinnedTabCodec::RegisterUserPrefs(PrefService* prefs) {
prefs->RegisterListPref(prefs::kPinnedTabs, PrefService::UNSYNCABLE_PREF);
}
// static
void PinnedTabCodec::WritePinnedTabs(Profile* profile) {
PrefService* prefs = profile->GetPrefs();
if (!prefs)
return;
ListValue values;
for (BrowserList::const_iterator i = BrowserList::begin();
i != BrowserList::end(); ++i) {
Browser* browser = *i;
if (browser->is_type_tabbed() &&
browser->profile() == profile && HasPinnedTabs(browser)) {
EncodePinnedTabs(browser, &values);
}
}
prefs->Set(prefs::kPinnedTabs, values);
}
// static
void PinnedTabCodec::WritePinnedTabs(Profile* profile,
const StartupTabs& tabs) {
PrefService* prefs = profile->GetPrefs();
if (!prefs)
return;
ListPrefUpdate update(prefs, prefs::kPinnedTabs);
ListValue* values = update.Get();
values->Clear();
for (StartupTabs::const_iterator i = tabs.begin(); i != tabs.end(); ++i)
EncodeTab(*i, values);
}
// static
StartupTabs PinnedTabCodec::ReadPinnedTabs(Profile* profile) {
PrefService* prefs = profile->GetPrefs();
if (!prefs)
return StartupTabs();
return ReadPinnedTabs(prefs->GetList(prefs::kPinnedTabs));
}
// static
StartupTabs PinnedTabCodec::ReadPinnedTabs(const base::Value* value) {
StartupTabs results;
const base::ListValue* tabs_list = NULL;
if (!value->GetAsList(&tabs_list))
return results;
for (size_t i = 0, max = tabs_list->GetSize(); i < max; ++i) {
const base::DictionaryValue* tab_values = NULL;
if (tabs_list->GetDictionary(i, &tab_values)) {
StartupTab tab;
if (DecodeTab(*tab_values, &tab))
results.push_back(tab);
}
}
return results;
}
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