extension_infobar.cc revision 0529e5d033099cbfc42635f6f6183833b09dff6e 
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/controls/menu/menu_item_view.h"
27#include "ui/views/widget/widget.h"
28
29
30// ExtensionInfoBarDelegate ----------------------------------------------------
31
32// static
33scoped_ptr<infobars::InfoBar> ExtensionInfoBarDelegate::CreateInfoBar(
34    scoped_ptr<ExtensionInfoBarDelegate> delegate) {
35  Browser* browser = delegate->browser_;
36  return scoped_ptr<infobars::InfoBar>(
37      new ExtensionInfoBar(delegate.Pass(), browser));
38}
39
40
41// ExtensionInfoBar ------------------------------------------------------------
42
43namespace {
44// The horizontal margin between the infobar icon and the Extension (HTML) view.
45const int kIconHorizontalMargin = 1;
46
47class MenuImageSource: public gfx::CanvasImageSource {
48 public:
49  MenuImageSource(const gfx::ImageSkia& icon, const gfx::ImageSkia& drop_image)
50      : gfx::CanvasImageSource(ComputeSize(drop_image), false),
51        icon_(icon),
52        drop_image_(drop_image) {
53  }
54
55  virtual ~MenuImageSource() {
56  }
57
58  // Overridden from gfx::CanvasImageSource
59  virtual void Draw(gfx::Canvas* canvas) OVERRIDE {
60    int image_size = extension_misc::EXTENSION_ICON_BITTY;
61    canvas->DrawImageInt(icon_, 0, 0, icon_.width(), icon_.height(), 0, 0,
62                         image_size, image_size, false);
63    canvas->DrawImageInt(drop_image_, image_size + kDropArrowLeftMargin,
64                         image_size / 2);
65  }
66
67 private:
68  gfx::Size ComputeSize(const gfx::ImageSkia& drop_image) const {
69    int image_size = extension_misc::EXTENSION_ICON_BITTY;
70    return gfx::Size(image_size + kDropArrowLeftMargin + drop_image.width(),
71                     image_size);
72  }
73
74  // The margin between the extension icon and the drop-down arrow image.
75  static const int kDropArrowLeftMargin = 3;
76
77  const gfx::ImageSkia icon_;
78  const gfx::ImageSkia drop_image_;
79
80  DISALLOW_COPY_AND_ASSIGN(MenuImageSource);
81};
82
83}  // namespace
84
85ExtensionInfoBar::ExtensionInfoBar(
86    scoped_ptr<ExtensionInfoBarDelegate> delegate,
87    Browser* browser)
88    : InfoBarView(delegate.PassAs<infobars::InfoBarDelegate>()),
89      browser_(browser),
90      infobar_icon_(NULL),
91      icon_as_menu_(NULL),
92      icon_as_image_(NULL),
93      weak_ptr_factory_(this) {
94}
95
96ExtensionInfoBar::~ExtensionInfoBar() {
97}
98
99void ExtensionInfoBar::Layout() {
100  InfoBarView::Layout();
101
102  infobar_icon_->SetPosition(gfx::Point(StartX(), OffsetY(infobar_icon_)));
103  ExtensionViewViews* extension_view =
104      GetDelegate()->extension_view_host()->view();
105  // TODO(pkasting): We'd like to simply set the extension view's desired height
106  // at creation time and position using OffsetY() like for other infobar items,
107  // but the NativeViewHost inside does not seem to be clipped by the ClipRect()
108  // call in InfoBarView::PaintChildren(), so we have to manually clamp the size
109  // here.
110  extension_view->SetSize(
111      gfx::Size(std::max(0, EndX() - StartX() - NonExtensionViewWidth()),
112                std::min(height() - kSeparatorLineHeight - arrow_height(),
113                         GetDelegate()->height())));
114  // We do SetPosition() separately after SetSize() so OffsetY() will work.
115  extension_view->SetPosition(
116      gfx::Point(infobar_icon_->bounds().right() + kIconHorizontalMargin,
117                 std::max(arrow_height(), OffsetY(extension_view))));
118}
119
120void ExtensionInfoBar::ViewHierarchyChanged(
121    const ViewHierarchyChangedDetails& details) {
122  if (!details.is_add || (details.child != this) || (infobar_icon_ != NULL)) {
123    InfoBarView::ViewHierarchyChanged(details);
124    return;
125  }
126
127  extensions::ExtensionViewHost* extension_view_host =
128      GetDelegate()->extension_view_host();
129
130  if (extension_view_host->extension()->ShowConfigureContextMenus()) {
131    icon_as_menu_ = new views::MenuButton(NULL, base::string16(), this, false);
132    icon_as_menu_->SetFocusable(true);
133    infobar_icon_ = icon_as_menu_;
134  } else {
135    icon_as_image_ = new views::ImageView();
136    infobar_icon_ = icon_as_image_;
137  }
138
139  // Wait until the icon image is loaded before showing it.
140  infobar_icon_->SetVisible(false);
141  AddChildView(infobar_icon_);
142
143  // Set the desired height of the ExtensionViewViews, so that when the
144  // AddChildView() call triggers InfoBarView::ViewHierarchyChanged(), it can
145  // read the correct height off this object in order to calculate the overall
146  // desired infobar height.
147  extension_view_host->view()->SetSize(gfx::Size(0, GetDelegate()->height()));
148  AddChildView(extension_view_host->view());
149
150  // This must happen after adding all other children so InfoBarView can ensure
151  // the close button is the last child.
152  InfoBarView::ViewHierarchyChanged(details);
153
154  // This must happen after adding all children because it can trigger layout,
155  // which assumes that particular children (e.g. the close button) have already
156  // been added.
157  const extensions::Extension* extension = extension_view_host->extension();
158  extension_misc::ExtensionIcons image_size =
159      extension_misc::EXTENSION_ICON_BITTY;
160  extensions::ExtensionResource icon_resource =
161      extensions::IconsInfo::GetIconResource(
162          extension, image_size, ExtensionIconSet::MATCH_EXACTLY);
163  extensions::ImageLoader* loader =
164      extensions::ImageLoader::Get(extension_view_host->browser_context());
165  loader->LoadImageAsync(
166      extension,
167      icon_resource,
168      gfx::Size(image_size, image_size),
169      base::Bind(&ExtensionInfoBar::OnImageLoaded,
170                 weak_ptr_factory_.GetWeakPtr()));
171}
172
173int ExtensionInfoBar::ContentMinimumWidth() {
174  return NonExtensionViewWidth() +
175      GetDelegate()->extension_view_host()->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(options_menu_contents.get(),
190            icon_as_menu_,
191            views::MenuItemView::TOPLEFT);
192}
193
194void ExtensionInfoBar::OnImageLoaded(const gfx::Image& image) {
195  if (!GetDelegate())
196    return;  // The delegate can go away while we asynchronously load images.
197
198  const gfx::ImageSkia* icon = NULL;
199  // Fall back on the default extension icon on failure.
200  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
201  if (image.IsEmpty())
202    icon = rb.GetImageNamed(IDR_EXTENSIONS_SECTION).ToImageSkia();
203  else
204    icon = image.ToImageSkia();
205
206  if (icon_as_menu_) {
207    const gfx::ImageSkia* drop_image =
208        rb.GetImageNamed(IDR_APP_DROPARROW).ToImageSkia();
209
210    gfx::CanvasImageSource* source = new MenuImageSource(*icon, *drop_image);
211    gfx::ImageSkia menu_image = gfx::ImageSkia(source, source->size());
212    icon_as_menu_->SetIcon(menu_image);
213  } else {
214    icon_as_image_->SetImage(*icon);
215  }
216
217  infobar_icon_->SizeToPreferredSize();
218  infobar_icon_->SetVisible(true);
219
220  Layout();
221}
222
223ExtensionInfoBarDelegate* ExtensionInfoBar::GetDelegate() {
224  return delegate()->AsExtensionInfoBarDelegate();
225}
226
227int ExtensionInfoBar::NonExtensionViewWidth() const {
228  return infobar_icon_->width() + kIconHorizontalMargin;
229}
230