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      1 // Copyright (c) 2011 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/gtk/bookmarks/bookmark_bar_instructions_gtk.h"
      6 
      7 #include "base/observer_list.h"
      8 #include "chrome/browser/ui/gtk/gtk_chrome_link_button.h"
      9 #include "chrome/browser/ui/gtk/gtk_chrome_shrinkable_hbox.h"
     10 #include "chrome/browser/ui/gtk/gtk_theme_service.h"
     11 #include "chrome/browser/ui/gtk/gtk_util.h"
     12 #include "content/common/notification_service.h"
     13 #include "grit/generated_resources.h"
     14 #include "ui/base/l10n/l10n_util.h"
     15 
     16 BookmarkBarInstructionsGtk::BookmarkBarInstructionsGtk(Delegate* delegate,
     17                                                        Profile* profile)
     18     : delegate_(delegate),
     19       profile_(profile),
     20       theme_service_(GtkThemeService::GetFrom(profile_)) {
     21   instructions_hbox_ = gtk_chrome_shrinkable_hbox_new(FALSE, FALSE, 0);
     22   gtk_widget_set_size_request(instructions_hbox_, 0, -1);
     23 
     24   instructions_label_ = gtk_label_new(
     25       l10n_util::GetStringUTF8(IDS_BOOKMARKS_NO_ITEMS).c_str());
     26   gtk_misc_set_alignment(GTK_MISC(instructions_label_), 0, 0.5);
     27   gtk_util::CenterWidgetInHBox(instructions_hbox_, instructions_label_,
     28                                false, 1);
     29   g_signal_connect(instructions_label_, "map",
     30                    G_CALLBACK(gtk_util::InitLabelSizeRequestAndEllipsizeMode),
     31                    NULL);
     32 
     33   instructions_link_ = gtk_chrome_link_button_new(
     34       l10n_util::GetStringUTF8(IDS_BOOKMARK_BAR_IMPORT_LINK).c_str());
     35   gtk_misc_set_alignment(
     36       GTK_MISC(GTK_CHROME_LINK_BUTTON(instructions_link_)->label), 0, 0.5);
     37   g_signal_connect(instructions_link_, "clicked",
     38                    G_CALLBACK(OnButtonClickThunk), this);
     39   gtk_util::SetButtonTriggersNavigation(instructions_link_);
     40   // Until we switch to vector graphics, force the font size.
     41   // 13.4px == 10pt @ 96dpi
     42   gtk_util::ForceFontSizePixels(
     43       GTK_CHROME_LINK_BUTTON(instructions_link_)->label, 13.4);
     44   gtk_util::CenterWidgetInHBox(instructions_hbox_, instructions_link_,
     45                                false, 6);
     46   g_signal_connect(GTK_CHROME_LINK_BUTTON(instructions_link_)->label, "map",
     47                    G_CALLBACK(gtk_util::InitLabelSizeRequestAndEllipsizeMode),
     48                    NULL);
     49 
     50   registrar_.Add(this, NotificationType::BROWSER_THEME_CHANGED,
     51                  NotificationService::AllSources());
     52   theme_service_->InitThemesFor(this);
     53 }
     54 
     55 void BookmarkBarInstructionsGtk::Observe(NotificationType type,
     56                                          const NotificationSource& source,
     57                                          const NotificationDetails& details) {
     58   if (type == NotificationType::BROWSER_THEME_CHANGED)
     59     UpdateColors();
     60 }
     61 
     62 void BookmarkBarInstructionsGtk::OnButtonClick(GtkWidget* button) {
     63   delegate_->ShowImportDialog();
     64 }
     65 
     66 void BookmarkBarInstructionsGtk::UpdateColors() {
     67   gtk_chrome_link_button_set_use_gtk_theme(
     68       GTK_CHROME_LINK_BUTTON(instructions_link_),
     69       theme_service_->UseGtkTheme());
     70 
     71   GdkColor bookmark_color = theme_service_->GetGdkColor(
     72       ThemeService::COLOR_BOOKMARK_TEXT);
     73   if (theme_service_->UseGtkTheme()) {
     74     gtk_util::SetLabelColor(instructions_label_, NULL);
     75     gtk_chrome_link_button_set_normal_color(
     76         GTK_CHROME_LINK_BUTTON(instructions_link_), NULL);
     77   } else {
     78     gtk_util::SetLabelColor(instructions_label_, &bookmark_color);
     79 
     80     // When using a non-standard, non-gtk theme, we make the link color match
     81     // the bookmark text color. Otherwise, standard link blue can look very
     82     // bad for some dark themes.
     83     if (theme_service_->GetColor(ThemeService::COLOR_BOOKMARK_TEXT) ==
     84         ThemeService::GetDefaultColor(
     85             ThemeService::COLOR_BOOKMARK_TEXT)) {
     86       gtk_chrome_link_button_set_normal_color(
     87           GTK_CHROME_LINK_BUTTON(instructions_link_), NULL);
     88     } else {
     89       gtk_chrome_link_button_set_normal_color(
     90           GTK_CHROME_LINK_BUTTON(instructions_link_), &bookmark_color);
     91     }
     92   }
     93 }
     94