// 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/sync/browser_synced_window_delegate.h"

#include <set>

#include "chrome/browser/sync/sessions/sessions_util.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/browser/ui/browser_iterator.h"
#include "chrome/browser/ui/sync/tab_contents_synced_tab_delegate.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "components/sessions/session_id.h"

// static SyncedWindowDelegate implementations

namespace browser_sync {

// static
std::set<const SyncedWindowDelegate*> SyncedWindowDelegate::GetAll() {
  std::set<const SyncedWindowDelegate*> synced_window_delegates;
  BrowserSyncedWindowDelegate::GetAllHelper(&synced_window_delegates);
  return synced_window_delegates;
}

// static
const SyncedWindowDelegate* SyncedWindowDelegate::FindById(
    SessionID::id_type id) {
  const SyncedWindowDelegate* synced_window_delegate =
      BrowserSyncedWindowDelegate::FindByIdHelper(id);
  return synced_window_delegate;
}

}  // namespace browser_sync

// BrowserSyncedWindowDelegate implementations

BrowserSyncedWindowDelegate::BrowserSyncedWindowDelegate(Browser* browser)
    : browser_(browser) {}

BrowserSyncedWindowDelegate::~BrowserSyncedWindowDelegate() {}

// static
void BrowserSyncedWindowDelegate::GetAllHelper(
    std::set<const browser_sync::SyncedWindowDelegate*>* delegates) {
  // Add all the browser windows.
  for (chrome::BrowserIterator it; !it.done(); it.Next())
    delegates->insert(it->synced_window_delegate());
}

// static
const browser_sync::SyncedWindowDelegate*
BrowserSyncedWindowDelegate::FindByIdHelper(SessionID::id_type id) {
  Browser* browser = chrome::FindBrowserWithID(id);
  return (browser != NULL) ? browser->synced_window_delegate() : NULL;
}

bool BrowserSyncedWindowDelegate::IsTabPinned(
    const browser_sync::SyncedTabDelegate* tab) const {
  for (int i = 0; i < browser_->tab_strip_model()->count(); i++) {
    browser_sync::SyncedTabDelegate* current = GetTabAt(i);
    if (tab == current)
      return browser_->tab_strip_model()->IsTabPinned(i);
  }
  // The window and tab are not always updated atomically, so it's possible
  // one of the values was stale. We'll retry later, just ignore for now.
  return false;
}

browser_sync::SyncedTabDelegate* BrowserSyncedWindowDelegate::GetTabAt(
    int index) const {
  return TabContentsSyncedTabDelegate::FromWebContents(
      browser_->tab_strip_model()->GetWebContentsAt(index));
}

SessionID::id_type BrowserSyncedWindowDelegate::GetTabIdAt(int index) const {
  return GetTabAt(index)->GetSessionId();
}

bool BrowserSyncedWindowDelegate::HasWindow() const {
  return browser_->window() != NULL;
}

SessionID::id_type BrowserSyncedWindowDelegate::GetSessionId() const {
  return browser_->session_id().id();
}

int BrowserSyncedWindowDelegate::GetTabCount() const {
  return browser_->tab_strip_model()->count();
}

int BrowserSyncedWindowDelegate::GetActiveIndex() const {
  return browser_->tab_strip_model()->active_index();
}

bool BrowserSyncedWindowDelegate::IsApp() const {
  return browser_->is_app();
}

bool BrowserSyncedWindowDelegate::IsTypeTabbed() const {
  return browser_->is_type_tabbed();
}

bool BrowserSyncedWindowDelegate::IsTypePopup() const {
  return browser_->is_type_popup();
}

bool BrowserSyncedWindowDelegate::IsSessionRestoreInProgress() const {
  return false;
}

bool BrowserSyncedWindowDelegate::ShouldSync() const {
  if (IsApp())
    return false;
  return IsTypeTabbed() || IsTypePopup();
}