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/sad_tab_gtk.h"
6
7#include <string>
8
9#include "chrome/browser/google/google_util.h"
10#include "chrome/browser/ui/gtk/gtk_chrome_link_button.h"
11#include "chrome/browser/ui/gtk/gtk_util.h"
12#include "chrome/common/url_constants.h"
13#include "content/browser/tab_contents/tab_contents.h"
14#include "grit/generated_resources.h"
15#include "grit/locale_settings.h"
16#include "grit/theme_resources.h"
17#include "ui/base/l10n/l10n_util.h"
18#include "ui/base/resource/resource_bundle.h"
19
20namespace {
21
22// Background color of the content (a grayish blue) for a crashed tab.
23const GdkColor kCrashedBackgroundColor = GDK_COLOR_RGB(35, 48, 64);
24
25// Background color of the content (a grayish purple) for a killed
26// tab.  TODO(gspencer): update this for the "real" color when the UI
27// team provides one.  See http://crosbug.com/10711
28const GdkColor kKilledBackgroundColor = GDK_COLOR_RGB(57, 48, 88);
29
30// Construct a centered GtkLabel with a white foreground.
31// |format| is a printf-style format containing a %s;
32// |str| is substituted into the format.
33GtkWidget* MakeWhiteMarkupLabel(const char* format, const std::string& str) {
34  GtkWidget* label = gtk_label_new(NULL);
35  char* markup = g_markup_printf_escaped(format, str.c_str());
36  gtk_label_set_markup(GTK_LABEL(label), markup);
37  g_free(markup);
38
39  // Center align and justify it.
40  gtk_misc_set_alignment(GTK_MISC(label), 0.5, 0.5);
41  gtk_label_set_justify(GTK_LABEL(label), GTK_JUSTIFY_CENTER);
42
43  // Set text to white.
44  GdkColor white = gtk_util::kGdkWhite;
45  gtk_widget_modify_fg(label, GTK_STATE_NORMAL, &white);
46
47  return label;
48}
49
50}  // namespace
51
52SadTabGtk::SadTabGtk(TabContents* tab_contents, Kind kind)
53    : tab_contents_(tab_contents),
54      kind_(kind) {
55  DCHECK(tab_contents_);
56
57  // Use an event box to get the background painting correctly.
58  event_box_.Own(gtk_event_box_new());
59  gtk_widget_modify_bg(event_box_.get(), GTK_STATE_NORMAL,
60                       kind == CRASHED ?
61                       &kCrashedBackgroundColor :
62                       &kKilledBackgroundColor);
63  // Allow ourselves to be resized arbitrarily small.
64  gtk_widget_set_size_request(event_box_.get(), 0, 0);
65
66  GtkWidget* centering = gtk_alignment_new(0.5, 0.5, 0.0, 0.0);
67  gtk_container_add(GTK_CONTAINER(event_box_.get()), centering);
68
69  // Use a vertical box to contain icon, title, message and link.
70  GtkWidget* vbox = gtk_vbox_new(FALSE, 0);
71  gtk_container_add(GTK_CONTAINER(centering), vbox);
72
73  // Add center-aligned image.
74  GtkWidget* image = gtk_image_new_from_pixbuf(
75      ResourceBundle::GetSharedInstance().GetPixbufNamed(kind == CRASHED ?
76                                                         IDR_SAD_TAB :
77                                                         IDR_KILLED_TAB));
78  gtk_misc_set_alignment(GTK_MISC(image), 0.5, 0.5);
79  gtk_box_pack_start(GTK_BOX(vbox), image, FALSE, FALSE, 0);
80
81  // Add spacer between image and title.
82  GtkWidget* spacer = gtk_label_new(NULL);
83  gtk_label_set_markup(GTK_LABEL(spacer), "<span size=\"larger\"> </span>");
84  gtk_box_pack_start(GTK_BOX(vbox), spacer, FALSE, FALSE, 0);
85
86  // Add center-aligned title.
87  GtkWidget* title = MakeWhiteMarkupLabel(
88      "<span size=\"larger\" style=\"normal\"><b>%s</b></span>",
89      l10n_util::GetStringUTF8(kind == CRASHED ?
90                               IDS_SAD_TAB_TITLE :
91                               IDS_KILLED_TAB_TITLE));
92  gtk_box_pack_start(GTK_BOX(vbox), title, FALSE, FALSE, 0);
93
94  // Add spacer between title and message.
95  spacer = gtk_label_new(" ");
96  gtk_box_pack_start(GTK_BOX(vbox), spacer, FALSE, FALSE, 0);
97
98  // Add center-aligned message.
99  GtkWidget* message = MakeWhiteMarkupLabel(
100      "<span style=\"normal\">%s</span>",
101      l10n_util::GetStringUTF8(kind == CRASHED ?
102                               IDS_SAD_TAB_MESSAGE :
103                               IDS_KILLED_TAB_MESSAGE));
104  gtk_label_set_line_wrap(GTK_LABEL(message), TRUE);
105  gtk_box_pack_start(GTK_BOX(vbox), message, FALSE, FALSE, 0);
106
107  // Add spacer between message and link.
108  spacer = gtk_label_new(" ");
109  gtk_box_pack_start(GTK_BOX(vbox), spacer, FALSE, FALSE, 0);
110
111  if (tab_contents_ != NULL) {
112    // Add the learn-more link and center-align it in an alignment.
113    GtkWidget* link = gtk_chrome_link_button_new(
114        l10n_util::GetStringUTF8(IDS_LEARN_MORE).c_str());
115    gtk_chrome_link_button_set_normal_color(GTK_CHROME_LINK_BUTTON(link),
116                                            &gtk_util::kGdkWhite);
117    g_signal_connect(link, "clicked", G_CALLBACK(OnLinkButtonClickThunk), this);
118    GtkWidget* link_alignment = gtk_alignment_new(0.5, 0.5, 0.0, 0.0);
119    gtk_container_add(GTK_CONTAINER(link_alignment), link);
120    gtk_box_pack_start(GTK_BOX(vbox), link_alignment, FALSE, FALSE, 0);
121  }
122
123  gtk_widget_show_all(event_box_.get());
124}
125
126SadTabGtk::~SadTabGtk() {
127  event_box_.Destroy();
128}
129
130void SadTabGtk::OnLinkButtonClick(GtkWidget* sender) {
131  if (tab_contents_ != NULL) {
132    GURL help_url =
133        google_util::AppendGoogleLocaleParam(GURL(
134            kind_ == CRASHED ?
135            chrome::kCrashReasonURL :
136            chrome::kKillReasonURL));
137    tab_contents_->OpenURL(help_url, GURL(), CURRENT_TAB, PageTransition::LINK);
138  }
139}
140