Refine Views textfield state interaction, testing, and examples.

ui/views/examples/textfield_example.cc

 // 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 "ui/views/examples/textfield_example.h"
 
 #include "base/utf_string_conversions.h"
 #include "ui/base/events/event.h"
 #include "ui/base/range/range.h"
 #include "ui/gfx/render_text.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/controls/textfield/textfield.h"
 #include "ui/views/layout/grid_layout.h"
 #include "ui/views/view.h"
 
 namespace views {
 namespace examples {
 
-TextfieldExample::TextfieldExample() : ExampleBase("Textfield") {
+TextfieldExample::TextfieldExample()
+   : ExampleBase("Textfield"),
+     name_(NULL),
+     password_(NULL),
+     read_only_(NULL),
+     show_password_(NULL),
+     clear_all_(NULL),
+     append_(NULL),
+     set_(NULL),
+     set_style_(NULL) {
 }
 
 TextfieldExample::~TextfieldExample() {
 }
 
 void TextfieldExample::CreateExampleView(View* container) {
   name_ = new Textfield();
   password_ = new Textfield(Textfield::STYLE_OBSCURED);
   password_->set_placeholder_text(ASCIIToUTF16("password"));
+  read_only_ = new Textfield();
+  read_only_->SetReadOnly(true);
+  read_only_->SetText(ASCIIToUTF16("read only"));
   show_password_ = new LabelButton(this, ASCIIToUTF16("Show password"));
   clear_all_ = new LabelButton(this, ASCIIToUTF16("Clear All"));
   append_ = new LabelButton(this, ASCIIToUTF16("Append"));
   set_ = new LabelButton(this, ASCIIToUTF16("Set"));
   set_style_ = new LabelButton(this, ASCIIToUTF16("Set Styles"));
   name_->SetController(this);
   password_->SetController(this);
 
   GridLayout* layout = new GridLayout(container);
   container->SetLayoutManager(layout);
 
   ColumnSet* column_set = layout->AddColumnSet(0);
   column_set->AddColumn(GridLayout::LEADING, GridLayout::FILL,
                         0.2f, GridLayout::USE_PREF, 0, 0);
   column_set->AddColumn(GridLayout::FILL, GridLayout::FILL,
                         0.8f, GridLayout::USE_PREF, 0, 0);
   layout->StartRow(0, 0);
   layout->AddView(new Label(ASCIIToUTF16("Name:")));
   layout->AddView(name_);
   layout->StartRow(0, 0);
   layout->AddView(new Label(ASCIIToUTF16("Password:")));
   layout->AddView(password_);
   layout->StartRow(0, 0);
+  layout->AddView(new Label(ASCIIToUTF16("Read Only:")));
+  layout->AddView(read_only_);
+  layout->StartRow(0, 0);
   layout->AddView(show_password_);
   layout->StartRow(0, 0);
   layout->AddView(clear_all_);
   layout->StartRow(0, 0);
   layout->AddView(append_);
   layout->StartRow(0, 0);
   layout->AddView(set_);
   layout->StartRow(0, 0);
   layout->AddView(set_style_);
 }
 
 void TextfieldExample::ContentsChanged(Textfield* sender,
                                        const string16& new_contents) {
   if (sender == name_) {
     PrintStatus("Name [%s]", UTF16ToUTF8(new_contents).c_str());
   } else if (sender == password_) {
     PrintStatus("Password [%s]", UTF16ToUTF8(new_contents).c_str());
+  } else if (sender == read_only_) {
+    PrintStatus("Read Only [%s]", UTF16ToUTF8(new_contents).c_str());
   }
 }
 
 bool TextfieldExample::HandleKeyEvent(Textfield* sender,
                                       const ui::KeyEvent& key_event) {
   return false;
 }
 
 bool TextfieldExample::HandleMouseEvent(Textfield* sender,
                                         const ui::MouseEvent& mouse_event) {
   PrintStatus("HandleMouseEvent click count=%d", mouse_event.GetClickCount());
   return false;
 }
 
 void TextfieldExample::ButtonPressed(Button* sender, const ui::Event& event) {
   if (sender == show_password_) {
     PrintStatus("Password [%s]", UTF16ToUTF8(password_->text()).c_str());
   } else if (sender == clear_all_) {
     string16 empty;
     name_->SetText(empty);
     password_->SetText(empty);
+    read_only_->SetText(empty);
   } else if (sender == append_) {
     name_->AppendText(ASCIIToUTF16("[append]"));
+    password_->AppendText(ASCIIToUTF16("[append]"));
+    read_only_->AppendText(ASCIIToUTF16("[append]"));
   } else if (sender == set_) {
     name_->SetText(ASCIIToUTF16("[set]"));
+    password_->SetText(ASCIIToUTF16("[set]"));
+    read_only_->SetText(ASCIIToUTF16("[set]"));
   } else if (sender == set_style_) {
     if (!name_->text().empty()) {
       name_->SetColor(SK_ColorGREEN);
       name_->SetStyle(gfx::BOLD, true);
 
       if (name_->text().length() >= 5) {
         size_t fifth = name_->text().length() / 5;
         const ui::Range big_range(1 * fifth, 4 * fifth);
         name_->ApplyStyle(gfx::BOLD, false, big_range);
         name_->ApplyStyle(gfx::UNDERLINE, true, big_range);
         name_->ApplyColor(SK_ColorBLUE, big_range);
 
         const ui::Range small_range(2 * fifth, 3 * fifth);
         name_->ApplyStyle(gfx::ITALIC, true, small_range);
         name_->ApplyStyle(gfx::UNDERLINE, false, small_range);
         name_->ApplyStyle(gfx::DIAGONAL_STRIKE, true, small_range);
         name_->ApplyColor(SK_ColorRED, small_range);
       }
     }
   }
 }
 
 }  // namespace examples
 }  // namespace views