src/chrome/browser/ui/views/infobars/extension_infobar.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 "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_host.h"
   9 #include "chrome/browser/extensions/extension_infobar_delegate.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 "chrome/common/extensions/extension.h"
  14 #include "chrome/common/extensions/extension_constants.h"
  15 #include "chrome/common/extensions/extension_icon_set.h"
  16 #include "chrome/common/extensions/manifest_handlers/icons_handler.h"
  17 #include "extensions/common/extension_resource.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 InfoBar* ExtensionInfoBarDelegate::CreateInfoBar(InfoBarService* owner) {
  33   return new ExtensionInfoBar(owner, this, browser_);
  34 }
  35
  36
  37 // ExtensionInfoBar ------------------------------------------------------------
  38
  39 namespace {
  40 // The horizontal margin between the infobar icon and the Extension (HTML) view.
  41 const int kIconHorizontalMargin = 1;
  42
  43 class MenuImageSource: public gfx::CanvasImageSource {
  44  public:
  45   MenuImageSource(const gfx::ImageSkia& icon, const gfx::ImageSkia& drop_image)
  46       : gfx::CanvasImageSource(ComputeSize(drop_image), false),
  47         icon_(icon),
  48         drop_image_(drop_image) {
  49   }
  50
  51   virtual ~MenuImageSource() {
  52   }
  53
  54   // Overridden from gfx::CanvasImageSource
  55   virtual void Draw(gfx::Canvas* canvas) OVERRIDE {
  56     int image_size = extension_misc::EXTENSION_ICON_BITTY;
  57     canvas->DrawImageInt(icon_, 0, 0, icon_.width(), icon_.height(), 0, 0,
  58                          image_size, image_size, false);
  59     canvas->DrawImageInt(drop_image_, image_size + kDropArrowLeftMargin,
  60                          image_size / 2);
  61   }
  62
  63  private:
  64   gfx::Size ComputeSize(const gfx::ImageSkia& drop_image) const {
  65     int image_size = extension_misc::EXTENSION_ICON_BITTY;
  66     return gfx::Size(image_size + kDropArrowLeftMargin + drop_image.width(),
  67                      image_size);
  68   }
  69
  70   // The margin between the extension icon and the drop-down arrow image.
  71   static const int kDropArrowLeftMargin = 3;
  72
  73   const gfx::ImageSkia icon_;
  74   const gfx::ImageSkia drop_image_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(MenuImageSource);
  77 };
  78
  79 }  // namespace
  80
  81 ExtensionInfoBar::ExtensionInfoBar(InfoBarService* owner,
  82                                    ExtensionInfoBarDelegate* delegate,
  83                                    Browser* browser)
  84     : InfoBarView(owner, delegate),
  85       delegate_(delegate),
  86       browser_(browser),
  87       infobar_icon_(NULL),
  88       icon_as_menu_(NULL),
  89       icon_as_image_(NULL),
  90       weak_ptr_factory_(this) {
  91   GetDelegate()->set_observer(this);
  92
  93   int height = GetDelegate()->height();
  94   SetBarTargetHeight((height > 0) ? (height + kSeparatorLineHeight) : 0);
  95 }
  96
  97 ExtensionInfoBar::~ExtensionInfoBar() {
  98   if (GetDelegate())
  99     GetDelegate()->set_observer(NULL);
 100 }
 101
 102 void ExtensionInfoBar::Layout() {
 103   InfoBarView::Layout();
 104
 105   gfx::Size size = infobar_icon_->GetPreferredSize();
 106   infobar_icon_->SetBounds(StartX(), OffsetY(size), size.width(),
 107                            size.height());
 108
 109   GetDelegate()->extension_host()->view()->SetBounds(
 110       infobar_icon_->bounds().right() + kIconHorizontalMargin,
 111       arrow_height(),
 112       std::max(0, EndX() - StartX() - ContentMinimumWidth()),
 113       height() - arrow_height() - 1);
 114 }
 115
 116 void ExtensionInfoBar::ViewHierarchyChanged(
 117     const ViewHierarchyChangedDetails& details) {
 118   if (!details.is_add || (details.child != this) || (infobar_icon_ != NULL)) {
 119     InfoBarView::ViewHierarchyChanged(details);
 120     return;
 121   }
 122
 123   extensions::ExtensionHost* extension_host = GetDelegate()->extension_host();
 124
 125   if (extension_host->extension()->ShowConfigureContextMenus()) {
 126     icon_as_menu_ = new views::MenuButton(NULL, string16(), this, false);
 127     icon_as_menu_->set_focusable(true);
 128     infobar_icon_ = icon_as_menu_;
 129   } else {
 130     icon_as_image_ = new views::ImageView();
 131     infobar_icon_ = icon_as_image_;
 132   }
 133
 134   // Wait until the icon image is loaded before showing it.
 135   infobar_icon_->SetVisible(false);
 136   AddChildView(infobar_icon_);
 137
 138   AddChildView(extension_host->view());
 139
 140   // This must happen after adding all other children so InfoBarView can ensure
 141   // the close button is the last child.
 142   InfoBarView::ViewHierarchyChanged(details);
 143
 144   // This must happen after adding all children because it can trigger layout,
 145   // which assumes that particular children (e.g. the close button) have already
 146   // been added.
 147   const extensions::Extension* extension = extension_host->extension();
 148   extension_misc::ExtensionIcons image_size =
 149       extension_misc::EXTENSION_ICON_BITTY;
 150   extensions::ExtensionResource icon_resource =
 151       extensions::IconsInfo::GetIconResource(
 152           extension, image_size, ExtensionIconSet::MATCH_EXACTLY);
 153   extensions::ImageLoader* loader =
 154       extensions::ImageLoader::Get(extension_host->profile());
 155   loader->LoadImageAsync(
 156       extension,
 157       icon_resource,
 158       gfx::Size(image_size, image_size),
 159       base::Bind(&ExtensionInfoBar::OnImageLoaded,
 160                  weak_ptr_factory_.GetWeakPtr()));
 161 }
 162
 163 int ExtensionInfoBar::ContentMinimumWidth() const {
 164   return infobar_icon_->GetPreferredSize().width() + kIconHorizontalMargin;
 165
 166 }
 167
 168 void ExtensionInfoBar::OnDelegateDeleted() {
 169   delegate_ = NULL;
 170 }
 171
 172 void ExtensionInfoBar::OnMenuButtonClicked(views::View* source,
 173                                            const gfx::Point& point) {
 174   if (!owner())
 175     return;  // We're closing; don't call anything, it might access the owner.
 176   const extensions::Extension* extension =
 177       GetDelegate()->extension_host()->extension();
 178   DCHECK(icon_as_menu_);
 179
 180   scoped_refptr<ExtensionContextMenuModel> options_menu_contents =
 181       new ExtensionContextMenuModel(extension, browser_);
 182   DCHECK_EQ(icon_as_menu_, source);
 183   RunMenuAt(options_menu_contents.get(),
 184             icon_as_menu_,
 185             views::MenuItemView::TOPLEFT);
 186 }
 187
 188 void ExtensionInfoBar::OnImageLoaded(const gfx::Image& image) {
 189   if (!GetDelegate())
 190     return;  // The delegate can go away while we asynchronously load images.
 191
 192   const gfx::ImageSkia* icon = NULL;
 193   // Fall back on the default extension icon on failure.
 194   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 195   if (image.IsEmpty())
 196     icon = rb.GetImageNamed(IDR_EXTENSIONS_SECTION).ToImageSkia();
 197   else
 198     icon = image.ToImageSkia();
 199
 200   if (icon_as_menu_) {
 201     const gfx::ImageSkia* drop_image =
 202         rb.GetImageNamed(IDR_APP_DROPARROW).ToImageSkia();
 203
 204     gfx::CanvasImageSource* source = new MenuImageSource(*icon, *drop_image);
 205     gfx::ImageSkia menu_image = gfx::ImageSkia(source, source->size());
 206     icon_as_menu_->SetIcon(menu_image);
 207   } else {
 208     icon_as_image_->SetImage(*icon);
 209   }
 210
 211   infobar_icon_->SetVisible(true);
 212
 213   Layout();
 214 }
 215
 216 ExtensionInfoBarDelegate* ExtensionInfoBar::GetDelegate() {
 217   return delegate_ ? delegate_->AsExtensionInfoBarDelegate() : NULL;
 218 }