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      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/login_view.h"
      6 
      7 #include <string>
      8 
      9 #include "base/compiler_specific.h"
     10 #include "base/message_loop/message_loop.h"
     11 #include "base/strings/utf_string_conversions.h"
     12 #include "grit/generated_resources.h"
     13 #include "ui/base/l10n/l10n_util.h"
     14 #include "ui/views/controls/label.h"
     15 #include "ui/views/controls/textfield/textfield.h"
     16 #include "ui/views/layout/grid_layout.h"
     17 #include "ui/views/layout/layout_constants.h"
     18 #include "ui/views/widget/root_view.h"
     19 
     20 static const int kMessageWidth = 320;
     21 static const int kTextfieldStackHorizontalSpacing = 30;
     22 
     23 using views::GridLayout;
     24 
     25 ///////////////////////////////////////////////////////////////////////////////
     26 // LoginView, public:
     27 
     28 LoginView::LoginView(const string16& explanation,
     29                      LoginModel* model)
     30     : username_field_(new views::Textfield),
     31       password_field_(new views::Textfield(views::Textfield::STYLE_OBSCURED)),
     32       username_label_(new views::Label(
     33           l10n_util::GetStringUTF16(IDS_LOGIN_DIALOG_USERNAME_FIELD))),
     34       password_label_(new views::Label(
     35           l10n_util::GetStringUTF16(IDS_LOGIN_DIALOG_PASSWORD_FIELD))),
     36       message_label_(new views::Label(explanation)),
     37       login_model_(model) {
     38   message_label_->SetMultiLine(true);
     39   message_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
     40   message_label_->SetAllowCharacterBreak(true);
     41 
     42   // Initialize the Grid Layout Manager used for this dialog box.
     43   GridLayout* layout = GridLayout::CreatePanel(this);
     44   SetLayoutManager(layout);
     45 
     46   // Add the column set for the information message at the top of the dialog
     47   // box.
     48   const int single_column_view_set_id = 0;
     49   views::ColumnSet* column_set =
     50       layout->AddColumnSet(single_column_view_set_id);
     51   column_set->AddColumn(GridLayout::FILL, GridLayout::FILL, 1,
     52                         GridLayout::FIXED, kMessageWidth, 0);
     53 
     54   // Add the column set for the user name and password fields and labels.
     55   const int labels_column_set_id = 1;
     56   column_set = layout->AddColumnSet(labels_column_set_id);
     57   column_set->AddPaddingColumn(0, kTextfieldStackHorizontalSpacing);
     58   column_set->AddColumn(GridLayout::LEADING, GridLayout::CENTER, 0,
     59                         GridLayout::USE_PREF, 0, 0);
     60   column_set->AddPaddingColumn(0, views::kRelatedControlHorizontalSpacing);
     61   column_set->AddColumn(GridLayout::FILL, GridLayout::CENTER, 1,
     62                         GridLayout::USE_PREF, 0, 0);
     63   column_set->AddPaddingColumn(0, kTextfieldStackHorizontalSpacing);
     64 
     65   layout->StartRow(0, single_column_view_set_id);
     66   layout->AddView(message_label_);
     67 
     68   layout->AddPaddingRow(0, views::kUnrelatedControlLargeVerticalSpacing);
     69 
     70   layout->StartRow(0, labels_column_set_id);
     71   layout->AddView(username_label_);
     72   layout->AddView(username_field_);
     73 
     74   layout->AddPaddingRow(0, views::kRelatedControlVerticalSpacing);
     75 
     76   layout->StartRow(0, labels_column_set_id);
     77   layout->AddView(password_label_);
     78   layout->AddView(password_field_);
     79 
     80   layout->AddPaddingRow(0, views::kUnrelatedControlVerticalSpacing);
     81 
     82   if (login_model_)
     83     login_model_->AddObserver(this);
     84 }
     85 
     86 LoginView::~LoginView() {
     87   if (login_model_)
     88     login_model_->RemoveObserver(this);
     89 }
     90 
     91 string16 LoginView::GetUsername() {
     92   return username_field_->text();
     93 }
     94 
     95 string16 LoginView::GetPassword() {
     96   return password_field_->text();
     97 }
     98 
     99 views::View* LoginView::GetInitiallyFocusedView() {
    100   return username_field_;
    101 }
    102 
    103 ///////////////////////////////////////////////////////////////////////////////
    104 // LoginView, views::View, views::LoginModelObserver overrides:
    105 
    106 void LoginView::OnAutofillDataAvailable(const string16& username,
    107                                         const string16& password) {
    108   if (username_field_->text().empty()) {
    109     username_field_->SetText(username);
    110     password_field_->SetText(password);
    111     username_field_->SelectAll(true);
    112   }
    113 }
    114 
    115 void LoginView::OnLoginModelDestroying() {
    116   login_model_->RemoveObserver(this);
    117   login_model_ = NULL;
    118 }
    119