extension_infobar.cc revision cedac228d2dd51db4b79ea1e72c7f249408ee061 
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/infobars/extension_infobar.h"
6
7#include "chrome/browser/extensions/extension_context_menu_model.h"
8#include "chrome/browser/extensions/extension_infobar_delegate.h"
9#include "chrome/browser/extensions/extension_view_host.h"
10#include "chrome/browser/extensions/image_loader.h"
11#include "chrome/browser/platform_util.h"
12#include "chrome/browser/ui/views/frame/browser_view.h"
13#include "extensions/common/constants.h"
14#include "extensions/common/extension.h"
15#include "extensions/common/extension_icon_set.h"
16#include "extensions/common/extension_resource.h"
17#include "extensions/common/manifest_handlers/icons_handler.h"
18#include "grit/theme_resources.h"
19#include "ui/base/resource/resource_bundle.h"
20#include "ui/gfx/animation/slide_animation.h"
21#include "ui/gfx/canvas.h"
22#include "ui/gfx/image/canvas_image_source.h"
23#include "ui/gfx/image/image.h"
24#include "ui/views/controls/button/menu_button.h"
25#include "ui/views/controls/image_view.h"
26#include "ui/views/widget/widget.h"
27
28
29// ExtensionInfoBarDelegate ----------------------------------------------------
30
31// static
32scoped_ptr<infobars::InfoBar> ExtensionInfoBarDelegate::CreateInfoBar(
33    scoped_ptr<ExtensionInfoBarDelegate> delegate) {
34  Browser* browser = delegate->browser_;
35  return scoped_ptr<infobars::InfoBar>(
36      new ExtensionInfoBar(delegate.Pass(), browser));
37}
38
39
40// ExtensionInfoBar ------------------------------------------------------------
41
42namespace {
43// The horizontal margin between the infobar icon and the Extension (HTML) view.
44const int kIconHorizontalMargin = 1;
45
46class MenuImageSource: public gfx::CanvasImageSource {
47 public:
48  MenuImageSource(const gfx::ImageSkia& icon, const gfx::ImageSkia& drop_image)
49      : gfx::CanvasImageSource(ComputeSize(drop_image), false),
50        icon_(icon),
51        drop_image_(drop_image) {
52  }
53
54  virtual ~MenuImageSource() {
55  }
56
57  // Overridden from gfx::CanvasImageSource
58  virtual void Draw(gfx::Canvas* canvas) OVERRIDE {
59    int image_size = extension_misc::EXTENSION_ICON_BITTY;
60    canvas->DrawImageInt(icon_, 0, 0, icon_.width(), icon_.height(), 0, 0,
61                         image_size, image_size, false);
62    canvas->DrawImageInt(drop_image_, image_size + kDropArrowLeftMargin,
63                         image_size / 2);
64  }
65
66 private:
67  gfx::Size ComputeSize(const gfx::ImageSkia& drop_image) const {
68    int image_size = extension_misc::EXTENSION_ICON_BITTY;
69    return gfx::Size(image_size + kDropArrowLeftMargin + drop_image.width(),
70                     image_size);
71  }
72
73  // The margin between the extension icon and the drop-down arrow image.
74  static const int kDropArrowLeftMargin = 3;
75
76  const gfx::ImageSkia icon_;
77  const gfx::ImageSkia drop_image_;
78
79  DISALLOW_COPY_AND_ASSIGN(MenuImageSource);
80};
81
82}  // namespace
83
84ExtensionInfoBar::ExtensionInfoBar(
85    scoped_ptr<ExtensionInfoBarDelegate> delegate,
86    Browser* browser)
87    : InfoBarView(delegate.PassAs<infobars::InfoBarDelegate>()),
88      browser_(browser),
89      infobar_icon_(NULL),
90      icon_as_menu_(NULL),
91      icon_as_image_(NULL),
92      weak_ptr_factory_(this) {
93}
94
95ExtensionInfoBar::~ExtensionInfoBar() {
96}
97
98void ExtensionInfoBar::Layout() {
99  InfoBarView::Layout();
100
101  infobar_icon_->SetPosition(gfx::Point(StartX(), OffsetY(infobar_icon_)));
102  ExtensionViewViews* extension_view =
103      GetDelegate()->extension_view_host()->view();
104  // TODO(pkasting): We'd like to simply set the extension view's desired height
105  // at creation time and position using OffsetY() like for other infobar items,
106  // but the NativeViewHost inside does not seem to be clipped by the ClipRect()
107  // call in InfoBarView::PaintChildren(), so we have to manually clamp the size
108  // here.
109  extension_view->SetSize(
110      gfx::Size(std::max(0, EndX() - StartX() - NonExtensionViewWidth()),
111                std::min(height() - kSeparatorLineHeight - arrow_height(),
112                         GetDelegate()->height())));
113  // We do SetPosition() separately after SetSize() so OffsetY() will work.
114  extension_view->SetPosition(
115      gfx::Point(infobar_icon_->bounds().right() + kIconHorizontalMargin,
116                 std::max(arrow_height(), OffsetY(extension_view))));
117}
118
119void ExtensionInfoBar::ViewHierarchyChanged(
120    const ViewHierarchyChangedDetails& details) {
121  if (!details.is_add || (details.child != this) || (infobar_icon_ != NULL)) {
122    InfoBarView::ViewHierarchyChanged(details);
123    return;
124  }
125
126  extensions::ExtensionViewHost* extension_view_host =
127      GetDelegate()->extension_view_host();
128
129  if (extension_view_host->extension()->ShowConfigureContextMenus()) {
130    icon_as_menu_ = new views::MenuButton(NULL, base::string16(), this, false);
131    icon_as_menu_->SetFocusable(true);
132    infobar_icon_ = icon_as_menu_;
133  } else {
134    icon_as_image_ = new views::ImageView();
135    infobar_icon_ = icon_as_image_;
136  }
137
138  // Wait until the icon image is loaded before showing it.
139  infobar_icon_->SetVisible(false);
140  AddChildView(infobar_icon_);
141
142  // Set the desired height of the ExtensionViewViews, so that when the
143  // AddChildView() call triggers InfoBarView::ViewHierarchyChanged(), it can
144  // read the correct height off this object in order to calculate the overall
145  // desired infobar height.
146  extension_view_host->view()->SetSize(gfx::Size(0, GetDelegate()->height()));
147  AddChildView(extension_view_host->view());
148
149  // This must happen after adding all other children so InfoBarView can ensure
150  // the close button is the last child.
151  InfoBarView::ViewHierarchyChanged(details);
152
153  // This must happen after adding all children because it can trigger layout,
154  // which assumes that particular children (e.g. the close button) have already
155  // been added.
156  const extensions::Extension* extension = extension_view_host->extension();
157  extension_misc::ExtensionIcons image_size =
158      extension_misc::EXTENSION_ICON_BITTY;
159  extensions::ExtensionResource icon_resource =
160      extensions::IconsInfo::GetIconResource(
161          extension, image_size, ExtensionIconSet::MATCH_EXACTLY);
162  extensions::ImageLoader* loader =
163      extensions::ImageLoader::Get(extension_view_host->browser_context());
164  loader->LoadImageAsync(
165      extension,
166      icon_resource,
167      gfx::Size(image_size, image_size),
168      base::Bind(&ExtensionInfoBar::OnImageLoaded,
169                 weak_ptr_factory_.GetWeakPtr()));
170}
171
172int ExtensionInfoBar::ContentMinimumWidth() const {
173  return NonExtensionViewWidth() +
174      delegate()->AsExtensionInfoBarDelegate()->extension_view_host()->
175      view()->GetMinimumSize().width();
176}
177
178void ExtensionInfoBar::OnMenuButtonClicked(views::View* source,
179                                           const gfx::Point& point) {
180  if (!owner())
181    return;  // We're closing; don't call anything, it might access the owner.
182  const extensions::Extension* extension =
183      GetDelegate()->extension_view_host()->extension();
184  DCHECK(icon_as_menu_);
185
186  scoped_refptr<ExtensionContextMenuModel> options_menu_contents =
187      new ExtensionContextMenuModel(extension, browser_);
188  DCHECK_EQ(icon_as_menu_, source);
189  RunMenuAt(
190      options_menu_contents.get(), icon_as_menu_, views::MENU_ANCHOR_TOPLEFT);
191}
192
193void ExtensionInfoBar::OnImageLoaded(const gfx::Image& image) {
194  if (!GetDelegate())
195    return;  // The delegate can go away while we asynchronously load images.
196
197  const gfx::ImageSkia* icon = NULL;
198  // Fall back on the default extension icon on failure.
199  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
200  if (image.IsEmpty())
201    icon = rb.GetImageNamed(IDR_EXTENSIONS_SECTION).ToImageSkia();
202  else
203    icon = image.ToImageSkia();
204
205  if (icon_as_menu_) {
206    const gfx::ImageSkia* drop_image =
207        rb.GetImageNamed(IDR_APP_DROPARROW).ToImageSkia();
208
209    gfx::CanvasImageSource* source = new MenuImageSource(*icon, *drop_image);
210    gfx::ImageSkia menu_image = gfx::ImageSkia(source, source->size());
211    icon_as_menu_->SetIcon(menu_image);
212  } else {
213    icon_as_image_->SetImage(*icon);
214  }
215
216  infobar_icon_->SizeToPreferredSize();
217  infobar_icon_->SetVisible(true);
218
219  Layout();
220}
221
222ExtensionInfoBarDelegate* ExtensionInfoBar::GetDelegate() {
223  return delegate()->AsExtensionInfoBarDelegate();
224}
225
226const ExtensionInfoBarDelegate* ExtensionInfoBar::GetDelegate() const {
227  return delegate()->AsExtensionInfoBarDelegate();
228}
229
230int ExtensionInfoBar::NonExtensionViewWidth() const {
231  return infobar_icon_->width() + kIconHorizontalMargin;
232}
233