frame_controller.cc revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
1// Copyright 2014 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 "mojo/examples/wm_flow/wm/frame_controller.h"
6
7#include "base/strings/utf_string_conversions.h"
8#include "mojo/services/public/cpp/view_manager/view.h"
9#include "mojo/views/native_widget_view_manager.h"
10#include "ui/views/background.h"
11#include "ui/views/controls/button/label_button.h"
12#include "ui/views/layout/layout_manager.h"
13#include "ui/views/widget/widget.h"
14
15class FrameController::LayoutManager : public views::LayoutManager,
16                                       public views::ButtonListener {
17 public:
18  explicit LayoutManager(FrameController* controller)
19      : controller_(controller),
20        close_button_(
21            new views::LabelButton(this, base::ASCIIToUTF16("Begone"))),
22        maximize_button_(
23            new views::LabelButton(this, base::ASCIIToUTF16("Embiggen"))) {}
24  virtual ~LayoutManager() {}
25
26 private:
27  static const int kButtonFrameMargin = 5;
28  static const int kButtonFrameSpacing = 2;
29  static const int kFrameSize = 10;
30
31  // Overridden from views::LayoutManager:
32  virtual void Installed(views::View* host) OVERRIDE {
33    host->AddChildView(close_button_);
34    host->AddChildView(maximize_button_);
35  }
36  virtual void Layout(views::View* host) OVERRIDE {
37    gfx::Size ps = close_button_->GetPreferredSize();
38    gfx::Rect bounds = host->GetLocalBounds();
39    close_button_->SetBounds(bounds.right() - kButtonFrameMargin - ps.width(),
40                             kButtonFrameMargin, ps.width(), ps.height());
41
42    ps = maximize_button_->GetPreferredSize();
43    maximize_button_->SetBounds(
44        close_button_->x() - kButtonFrameSpacing - ps.width(),
45        kButtonFrameMargin, ps.width(), ps.height());
46
47    bounds.Inset(kFrameSize,
48                 close_button_->bounds().bottom() + kButtonFrameMargin,
49                 kFrameSize, kFrameSize);
50    controller_->app_view_->SetBounds(bounds);
51  }
52  virtual gfx::Size GetPreferredSize(const views::View* host) const OVERRIDE {
53    return gfx::Size();
54  }
55
56  // Overridden from views::ButtonListener:
57  virtual void ButtonPressed(views::Button* sender,
58                             const ui::Event& event) OVERRIDE {
59    if (sender == close_button_)
60      controller_->CloseWindow();
61    else if (sender == maximize_button_)
62      controller_->ToggleMaximize();
63  }
64
65  FrameController* controller_;
66  views::Button* close_button_;
67  views::Button* maximize_button_;
68
69  DISALLOW_COPY_AND_ASSIGN(LayoutManager);
70};
71
72////////////////////////////////////////////////////////////////////////////////
73// FrameController, public:
74
75FrameController::FrameController(mojo::View* view, mojo::View** app_view)
76    : view_(view),
77      app_view_(mojo::View::Create(view->view_manager())),
78      frame_view_(new views::View),
79      frame_view_layout_manager_(new LayoutManager(this)),
80      widget_(new views::Widget),
81      maximized_(false) {
82  view_->AddChild(app_view_);
83  view_->AddObserver(this);
84  *app_view = app_view_;
85  frame_view_->set_background(
86      views::Background::CreateSolidBackground(SK_ColorBLUE));
87  frame_view_->SetLayoutManager(frame_view_layout_manager_);
88  views::Widget::InitParams params(
89      views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
90  params.native_widget = new mojo::NativeWidgetViewManager(widget_, view_);
91  params.bounds = gfx::Rect(view_->bounds().size());
92  widget_->Init(params);
93  widget_->SetContentsView(frame_view_);
94  widget_->Show();
95}
96
97FrameController::~FrameController() {}
98
99void FrameController::CloseWindow() {
100  app_view_->Destroy();
101  view_->Destroy();
102}
103
104void FrameController::ToggleMaximize() {
105  if (!maximized_)
106    restored_bounds_ = view_->bounds();
107  maximized_ = !maximized_;
108  if (maximized_)
109    view_->SetBounds(view_->parent()->bounds());
110  else
111    view_->SetBounds(restored_bounds_);
112}
113
114////////////////////////////////////////////////////////////////////////////////
115// FrameController, mojo::ViewObserver implementation:
116
117void FrameController::OnViewDestroyed(mojo::View* view) {
118  view_->RemoveObserver(this);
119  delete this;
120}
121