ui/views/examples/examples_window.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 "ui/views/examples/examples_window.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9
  10 #include "base/memory/scoped_vector.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "ui/base/models/combobox_model.h"
  13 #include "ui/base/ui_base_paths.h"
  14 #include "ui/views/background.h"
  15 #include "ui/views/controls/combobox/combobox.h"
  16 #include "ui/views/controls/label.h"
  17 #include "ui/views/examples/bubble_example.h"
  18 #include "ui/views/examples/button_example.h"
  19 #include "ui/views/examples/checkbox_example.h"
  20 #include "ui/views/examples/combobox_example.h"
  21 #include "ui/views/examples/double_split_view_example.h"
  22 #include "ui/views/examples/label_example.h"
  23 #include "ui/views/examples/link_example.h"
  24 #include "ui/views/examples/menu_example.h"
  25 #include "ui/views/examples/message_box_example.h"
  26 #include "ui/views/examples/multiline_example.h"
  27 #include "ui/views/examples/progress_bar_example.h"
  28 #include "ui/views/examples/radio_button_example.h"
  29 #include "ui/views/examples/scroll_view_example.h"
  30 #include "ui/views/examples/single_split_view_example.h"
  31 #include "ui/views/examples/slider_example.h"
  32 #include "ui/views/examples/tabbed_pane_example.h"
  33 #include "ui/views/examples/table_example.h"
  34 #include "ui/views/examples/text_example.h"
  35 #include "ui/views/examples/textfield_example.h"
  36 #include "ui/views/examples/throbber_example.h"
  37 #include "ui/views/examples/tree_view_example.h"
  38 #include "ui/views/examples/widget_example.h"
  39 #include "ui/views/layout/fill_layout.h"
  40 #include "ui/views/layout/grid_layout.h"
  41 #include "ui/views/widget/widget.h"
  42 #include "ui/views/widget/widget_delegate.h"
  43
  44 namespace views {
  45 namespace examples {
  46
  47 typedef scoped_ptr<ScopedVector<ExampleBase> > ScopedExamples;
  48
  49 namespace {
  50
  51 // Creates the default set of examples. Caller owns the result.
  52 ScopedExamples CreateExamples() {
  53   ScopedExamples examples(new ScopedVector<ExampleBase>);
  54   examples->push_back(new BubbleExample);
  55   examples->push_back(new ButtonExample);
  56   examples->push_back(new CheckboxExample);
  57   examples->push_back(new ComboboxExample);
  58   examples->push_back(new DoubleSplitViewExample);
  59   examples->push_back(new LabelExample);
  60   examples->push_back(new LinkExample);
  61   examples->push_back(new MenuExample);
  62   examples->push_back(new MessageBoxExample);
  63   examples->push_back(new MultilineExample);
  64   examples->push_back(new ProgressBarExample);
  65   examples->push_back(new RadioButtonExample);
  66   examples->push_back(new ScrollViewExample);
  67   examples->push_back(new SingleSplitViewExample);
  68   examples->push_back(new SliderExample);
  69   examples->push_back(new TabbedPaneExample);
  70   examples->push_back(new TableExample);
  71   examples->push_back(new TextExample);
  72   examples->push_back(new TextfieldExample);
  73   examples->push_back(new ThrobberExample);
  74   examples->push_back(new TreeViewExample);
  75   examples->push_back(new WidgetExample);
  76   return examples.Pass();
  77 }
  78
  79 struct ExampleTitleCompare {
  80   bool operator() (ExampleBase* a, ExampleBase* b) {
  81     return a->example_title() < b->example_title();
  82   }
  83 };
  84
  85 ScopedExamples GetExamplesToShow(ScopedExamples extra) {
  86   ScopedExamples examples(CreateExamples());
  87   if (extra.get()) {
  88     examples->insert(examples->end(), extra->begin(), extra->end());
  89     extra->weak_clear();
  90   }
  91   std::sort(examples->begin(), examples->end(), ExampleTitleCompare());
  92   return examples.Pass();
  93 }
  94
  95 }  // namespace
  96
  97 // Model for the examples that are being added via AddExample().
  98 class ComboboxModelExampleList : public ui::ComboboxModel {
  99  public:
 100   ComboboxModelExampleList() {}
 101   ~ComboboxModelExampleList() override {}
 102
 103   void SetExamples(ScopedExamples examples) {
 104     example_list_.swap(*examples);
 105   }
 106
 107   // ui::ComboboxModel:
 108   int GetItemCount() const override { return example_list_.size(); }
 109   base::string16 GetItemAt(int index) override {
 110     return base::UTF8ToUTF16(example_list_[index]->example_title());
 111   }
 112
 113   View* GetItemViewAt(int index) {
 114     return example_list_[index]->example_view();
 115   }
 116
 117  private:
 118   ScopedVector<ExampleBase> example_list_;
 119
 120   DISALLOW_COPY_AND_ASSIGN(ComboboxModelExampleList);
 121 };
 122
 123 class ExamplesWindowContents : public WidgetDelegateView,
 124                                public ComboboxListener {
 125  public:
 126   ExamplesWindowContents(Operation operation, ScopedExamples examples)
 127       : combobox_(new Combobox(&combobox_model_)),
 128         example_shown_(new View),
 129         status_label_(new Label),
 130         operation_(operation) {
 131     instance_ = this;
 132     combobox_->set_listener(this);
 133     combobox_model_.SetExamples(examples.Pass());
 134     combobox_->ModelChanged();
 135
 136     set_background(Background::CreateStandardPanelBackground());
 137     GridLayout* layout = new GridLayout(this);
 138     SetLayoutManager(layout);
 139     ColumnSet* column_set = layout->AddColumnSet(0);
 140     column_set->AddPaddingColumn(0, 5);
 141     column_set->AddColumn(GridLayout::FILL, GridLayout::FILL, 1,
 142                           GridLayout::USE_PREF, 0, 0);
 143     column_set->AddPaddingColumn(0, 5);
 144     layout->AddPaddingRow(0, 5);
 145     layout->StartRow(0 /* no expand */, 0);
 146     layout->AddView(combobox_);
 147
 148     if (combobox_model_.GetItemCount() > 0) {
 149       layout->StartRow(1, 0);
 150       example_shown_->SetLayoutManager(new FillLayout());
 151       example_shown_->AddChildView(combobox_model_.GetItemViewAt(0));
 152       layout->AddView(example_shown_);
 153     }
 154
 155     layout->StartRow(0 /* no expand */, 0);
 156     layout->AddView(status_label_);
 157     layout->AddPaddingRow(0, 5);
 158   }
 159
 160   ~ExamplesWindowContents() override {
 161     // Delete |combobox_| first as it references |combobox_model_|.
 162     delete combobox_;
 163     combobox_ = NULL;
 164   }
 165
 166   // Prints a message in the status area, at the bottom of the window.
 167   void SetStatus(const std::string& status) {
 168     status_label_->SetText(base::UTF8ToUTF16(status));
 169   }
 170
 171   static ExamplesWindowContents* instance() { return instance_; }
 172
 173  private:
 174   // WidgetDelegateView:
 175   bool CanResize() const override { return true; }
 176   bool CanMaximize() const override { return true; }
 177   bool CanMinimize() const override { return true; }
 178   base::string16 GetWindowTitle() const override {
 179     return base::ASCIIToUTF16("Views Examples");
 180   }
 181   View* GetContentsView() override { return this; }
 182   void WindowClosing() override {
 183     instance_ = NULL;
 184     if (operation_ == QUIT_ON_CLOSE)
 185       base::MessageLoopForUI::current()->Quit();
 186   }
 187
 188   // ComboboxListener:
 189   void OnPerformAction(Combobox* combobox) override {
 190     DCHECK_EQ(combobox, combobox_);
 191     DCHECK(combobox->selected_index() < combobox_model_.GetItemCount());
 192     example_shown_->RemoveAllChildViews(false);
 193     example_shown_->AddChildView(combobox_model_.GetItemViewAt(
 194         combobox->selected_index()));
 195     example_shown_->RequestFocus();
 196     SetStatus(std::string());
 197     Layout();
 198   }
 199
 200   static ExamplesWindowContents* instance_;
 201   ComboboxModelExampleList combobox_model_;
 202   Combobox* combobox_;
 203   View* example_shown_;
 204   Label* status_label_;
 205   const Operation operation_;
 206
 207   DISALLOW_COPY_AND_ASSIGN(ExamplesWindowContents);
 208 };
 209
 210 // static
 211 ExamplesWindowContents* ExamplesWindowContents::instance_ = NULL;
 212
 213 void ShowExamplesWindow(Operation operation,
 214                         gfx::NativeWindow window_context,
 215                         ScopedExamples extra_examples) {
 216   if (ExamplesWindowContents::instance()) {
 217     ExamplesWindowContents::instance()->GetWidget()->Activate();
 218   } else {
 219     ScopedExamples examples(GetExamplesToShow(extra_examples.Pass()));
 220     Widget* widget = new Widget;
 221     Widget::InitParams params;
 222     params.delegate = new ExamplesWindowContents(operation, examples.Pass());
 223     params.context = window_context;
 224     params.bounds = gfx::Rect(0, 0, 850, 300);
 225     widget->Init(params);
 226     widget->Show();
 227   }
 228 }
 229
 230 void LogStatus(const std::string& string) {
 231   ExamplesWindowContents::instance()->SetStatus(string);
 232 }
 233
 234 }  // namespace examples
 235 }  // namespace views