chrome/browser/ui/views/location_bar/keyword_hint_view.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/views/location_bar/keyword_hint_view.h"
   6
   7 #include <vector>
   8
   9 #include "base/logging.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "chrome/app/chrome_command_ids.h"
  12 #include "chrome/browser/profiles/profile.h"
  13 #include "chrome/browser/search_engines/template_url_service.h"
  14 #include "chrome/browser/search_engines/template_url_service_factory.h"
  15 #include "chrome/browser/ui/views/location_bar/location_bar_view.h"
  16 #include "grit/generated_resources.h"
  17 #include "grit/theme_resources.h"
  18 #include "ui/base/l10n/l10n_util.h"
  19 #include "ui/base/resource/resource_bundle.h"
  20 #include "ui/gfx/canvas.h"
  21 #include "ui/views/controls/image_view.h"
  22 #include "ui/views/controls/label.h"
  23
  24
  25 KeywordHintView::KeywordHintView(Profile* profile,
  26                                  const gfx::FontList& font_list,
  27                                  SkColor text_color,
  28                                  SkColor background_color)
  29     : profile_(profile),
  30       tab_image_(new views::ImageView()) {
  31   leading_label_ =
  32       CreateLabel(font_list, text_color, background_color);
  33   tab_image_->SetImage(
  34       ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
  35           IDR_OMNIBOX_KEYWORD_HINT_TAB));
  36   AddChildView(tab_image_);
  37   trailing_label_ =
  38       CreateLabel(font_list, text_color, background_color);
  39 }
  40
  41 KeywordHintView::~KeywordHintView() {
  42 }
  43
  44 void KeywordHintView::SetKeyword(const base::string16& keyword) {
  45   keyword_ = keyword;
  46   if (keyword_.empty())
  47     return;
  48   DCHECK(profile_);
  49   TemplateURLService* url_service =
  50       TemplateURLServiceFactory::GetForProfile(profile_);
  51   if (!url_service)
  52     return;
  53
  54   std::vector<size_t> content_param_offsets;
  55   bool is_extension_keyword;
  56   base::string16 short_name(
  57       url_service->GetKeywordShortName(keyword, &is_extension_keyword));
  58   int message_id = is_extension_keyword ?
  59       IDS_OMNIBOX_EXTENSION_KEYWORD_HINT : IDS_OMNIBOX_KEYWORD_HINT;
  60   const base::string16 keyword_hint = l10n_util::GetStringFUTF16(
  61       message_id, base::string16(), short_name, &content_param_offsets);
  62   DCHECK_EQ(2U, content_param_offsets.size());
  63   leading_label_->SetText(
  64       keyword_hint.substr(0, content_param_offsets.front()));
  65   trailing_label_->SetText(keyword_hint.substr(content_param_offsets.front()));
  66 }
  67
  68 gfx::Size KeywordHintView::GetPreferredSize() const {
  69   // Height will be ignored by the LocationBarView.
  70   return gfx::Size(leading_label_->GetPreferredSize().width() +
  71                        tab_image_->GetPreferredSize().width() +
  72                        trailing_label_->GetPreferredSize().width(),
  73                    0);
  74 }
  75
  76 gfx::Size KeywordHintView::GetMinimumSize() const {
  77   // Height will be ignored by the LocationBarView.
  78   return tab_image_->GetPreferredSize();
  79 }
  80
  81 void KeywordHintView::Layout() {
  82   int tab_width = tab_image_->GetPreferredSize().width();
  83   bool show_labels = (width() != tab_width);
  84   gfx::Size leading_size(leading_label_->GetPreferredSize());
  85   leading_label_->SetBounds(0, 0, show_labels ? leading_size.width() : 0,
  86                             height());
  87   tab_image_->SetBounds(leading_label_->bounds().right(), 0, tab_width,
  88                         height());
  89   gfx::Size trailing_size(trailing_label_->GetPreferredSize());
  90   trailing_label_->SetBounds(tab_image_->bounds().right(), 0,
  91                              show_labels ? trailing_size.width() : 0,
  92                              height());
  93 }
  94
  95 views::Label* KeywordHintView::CreateLabel(const gfx::FontList& font_list,
  96                                            SkColor text_color,
  97                                            SkColor background_color) {
  98   views::Label* label = new views::Label(base::string16(), font_list);
  99   label->SetEnabledColor(text_color);
 100   label->SetBackgroundColor(background_color);
 101   AddChildView(label);
 102   return label;
 103 }