// 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/views/first_run_bubble.h"

#include "chrome/browser/first_run/first_run.h"
#include "chrome/browser/search_engines/util.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/chrome_pages.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/views/controls/label.h"
#include "ui/views/controls/link.h"
#include "ui/views/layout/grid_layout.h"
#include "ui/views/layout/layout_constants.h"
#include "ui/views/widget/widget.h"

namespace {
const int kAnchorVerticalInset = 5;
const int kTopInset = 1;
const int kLeftInset = 2;
const int kBottomInset = 7;
const int kRightInset = 2;
}  // namespace

// static
FirstRunBubble* FirstRunBubble::ShowBubble(Browser* browser,
                                           views::View* anchor_view) {
  first_run::LogFirstRunMetric(first_run::FIRST_RUN_BUBBLE_SHOWN);

  FirstRunBubble* delegate = new FirstRunBubble(browser, anchor_view);
  views::BubbleDelegateView::CreateBubble(delegate);
  delegate->StartFade(true);
  return delegate;
}

void FirstRunBubble::Init() {
  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  const gfx::Font& original_font = rb.GetFont(ui::ResourceBundle::MediumFont);

  views::Label* title = new views::Label(l10n_util::GetStringFUTF16(
      IDS_FR_BUBBLE_TITLE, browser_ ?
          GetDefaultSearchEngineName(browser_->profile()) : base::string16()));
  title->SetFont(original_font.DeriveFont(2, gfx::Font::BOLD));

  views::Link* change =
      new views::Link(l10n_util::GetStringUTF16(IDS_FR_BUBBLE_CHANGE));
  change->SetFont(original_font);
  change->set_listener(this);

  views::Label* subtext =
      new views::Label(l10n_util::GetStringUTF16(IDS_FR_BUBBLE_SUBTEXT));
  subtext->SetFont(original_font);

  views::GridLayout* layout = views::GridLayout::CreatePanel(this);
  SetLayoutManager(layout);
  layout->SetInsets(kTopInset, kLeftInset, kBottomInset, kRightInset);

  views::ColumnSet* columns = layout->AddColumnSet(0);
  columns->AddColumn(views::GridLayout::LEADING, views::GridLayout::LEADING, 0,
                     views::GridLayout::USE_PREF, 0, 0);
  columns->AddPaddingColumn(0, views::kRelatedControlHorizontalSpacing);
  columns->AddColumn(views::GridLayout::LEADING, views::GridLayout::LEADING, 0,
                     views::GridLayout::USE_PREF, 0, 0);
  columns->AddPaddingColumn(1, 0);

  layout->StartRow(0, 0);
  layout->AddView(title);
  layout->AddView(change);
  layout->StartRowWithPadding(0, 0, 0,
      views::kRelatedControlSmallVerticalSpacing);
  layout->AddView(subtext, columns->num_columns(), 1);
}

FirstRunBubble::FirstRunBubble(Browser* browser, views::View* anchor_view)
    : views::BubbleDelegateView(anchor_view, views::BubbleBorder::TOP_LEFT),
      browser_(browser) {
  // Compensate for built-in vertical padding in the anchor view's image.
  set_anchor_view_insets(
      gfx::Insets(kAnchorVerticalInset, 0, kAnchorVerticalInset, 0));
}

FirstRunBubble::~FirstRunBubble() {
}

void FirstRunBubble::LinkClicked(views::Link* source, int event_flags) {
  first_run::LogFirstRunMetric(first_run::FIRST_RUN_BUBBLE_CHANGE_INVOKED);

  GetWidget()->Close();
  if (browser_)
    chrome::ShowSearchEngineSettings(browser_);
}