// 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/browser_tab_strip_model_delegate.h"

#include "base/bind.h"
#include "base/command_line.h"
#include "base/message_loop/message_loop.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/sessions/tab_restore_service.h"
#include "chrome/browser/sessions/tab_restore_service_factory.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_commands.h"
#include "chrome/browser/ui/browser_navigator.h"
#include "chrome/browser/ui/browser_tab_contents.h"
#include "chrome/browser/ui/browser_tabstrip.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/fast_unload_controller.h"
#include "chrome/browser/ui/tabs/dock_info.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/ui/unload_controller.h"
#include "chrome/common/chrome_switches.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_delegate.h"
#include "content/public/common/page_transition_types.h"
#include "ipc/ipc_message.h"

namespace chrome {

////////////////////////////////////////////////////////////////////////////////
// BrowserTabStripModelDelegate, public:

BrowserTabStripModelDelegate::BrowserTabStripModelDelegate(Browser* browser)
    : browser_(browser),
      weak_factory_(this) {
}

BrowserTabStripModelDelegate::~BrowserTabStripModelDelegate() {
}

////////////////////////////////////////////////////////////////////////////////
// BrowserTabStripModelDelegate, TabStripModelDelegate implementation:

void BrowserTabStripModelDelegate::AddTabAt(const GURL& url,
                                            int index,
                                            bool foreground) {
  chrome::AddTabAt(browser_, url, index, foreground);
}

Browser* BrowserTabStripModelDelegate::CreateNewStripWithContents(
    const std::vector<NewStripContents>& contentses,
    const gfx::Rect& window_bounds,
    const DockInfo& dock_info,
    bool maximize) {
  DCHECK(browser_->CanSupportWindowFeature(Browser::FEATURE_TABSTRIP));

  gfx::Rect new_window_bounds = window_bounds;
  if (dock_info.GetNewWindowBounds(&new_window_bounds, &maximize))
    dock_info.AdjustOtherWindowBounds();

  // Create an empty new browser window the same size as the old one.
  Browser::CreateParams params(browser_->profile(),
                               browser_->host_desktop_type());
  params.initial_bounds = new_window_bounds;
  params.initial_show_state =
      maximize ? ui::SHOW_STATE_MAXIMIZED : ui::SHOW_STATE_NORMAL;
  Browser* browser = new Browser(params);
  TabStripModel* new_model = browser->tab_strip_model();

  for (size_t i = 0; i < contentses.size(); ++i) {
    NewStripContents item = contentses[i];

    // Enforce that there is an active tab in the strip at all times by forcing
    // the first web contents to be marked as active.
    if (i == 0)
      item.add_types |= TabStripModel::ADD_ACTIVE;

    new_model->InsertWebContentsAt(
        static_cast<int>(i), item.web_contents, item.add_types);
    // Make sure the loading state is updated correctly, otherwise the throbber
    // won't start if the page is loading.
    // TODO(beng): find a better way of doing this.
    static_cast<content::WebContentsDelegate*>(browser)->
        LoadingStateChanged(item.web_contents);
  }

  return browser;
}

void BrowserTabStripModelDelegate::WillAddWebContents(
    content::WebContents* contents) {
  BrowserTabContents::AttachTabHelpers(contents);
}

int BrowserTabStripModelDelegate::GetDragActions() const {
  return TabStripModelDelegate::TAB_TEAROFF_ACTION |
      (browser_->tab_strip_model()->count() > 1
          ? TabStripModelDelegate::TAB_MOVE_ACTION : 0);
}

bool BrowserTabStripModelDelegate::CanDuplicateContentsAt(int index) {
  return CanDuplicateTabAt(browser_, index);
}

void BrowserTabStripModelDelegate::DuplicateContentsAt(int index) {
  DuplicateTabAt(browser_, index);
}

void BrowserTabStripModelDelegate::CloseFrameAfterDragSession() {
#if !defined(OS_MACOSX)
  // This is scheduled to run after we return to the message loop because
  // otherwise the frame will think the drag session is still active and ignore
  // the request.
  base::MessageLoop::current()->PostTask(
      FROM_HERE,
      base::Bind(&BrowserTabStripModelDelegate::CloseFrame,
                 weak_factory_.GetWeakPtr()));
#endif
}

void BrowserTabStripModelDelegate::CreateHistoricalTab(
    content::WebContents* contents) {
  // We don't create historical tabs for incognito windows or windows without
  // profiles.
  if (!browser_->profile() || browser_->profile()->IsOffTheRecord())
    return;

  TabRestoreService* service =
      TabRestoreServiceFactory::GetForProfile(browser_->profile());

  // We only create historical tab entries for tabbed browser windows.
  if (service && browser_->CanSupportWindowFeature(Browser::FEATURE_TABSTRIP)) {
    service->CreateHistoricalTab(
        contents,
        browser_->tab_strip_model()->GetIndexOfWebContents(contents));
  }
}

bool BrowserTabStripModelDelegate::RunUnloadListenerBeforeClosing(
    content::WebContents* contents) {
  if (CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kEnableFastUnload)) {
    return chrome::FastUnloadController::RunUnloadEventsHelper(contents);
  }
  return chrome::UnloadController::RunUnloadEventsHelper(contents);
}

bool BrowserTabStripModelDelegate::ShouldRunUnloadListenerBeforeClosing(
    content::WebContents* contents) {
  if (CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kEnableFastUnload)) {
    return chrome::FastUnloadController::ShouldRunUnloadEventsHelper(contents);
  }
  return chrome::UnloadController::ShouldRunUnloadEventsHelper(contents);
}

bool BrowserTabStripModelDelegate::CanBookmarkAllTabs() const {
  return chrome::CanBookmarkAllTabs(browser_);
}

void BrowserTabStripModelDelegate::BookmarkAllTabs() {
  chrome::BookmarkAllTabs(browser_);
}

TabStripModelDelegate::RestoreTabType
BrowserTabStripModelDelegate::GetRestoreTabType() {
  return chrome::GetRestoreTabType(browser_);
}

void BrowserTabStripModelDelegate::RestoreTab() {
  chrome::RestoreTab(browser_);
}

////////////////////////////////////////////////////////////////////////////////
// BrowserTabStripModelDelegate, private:

void BrowserTabStripModelDelegate::CloseFrame() {
  browser_->window()->Close();
}

}  // namespace chrome