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