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_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
  32 scoped_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
  42 namespace {
  43 // The horizontal margin between the infobar icon and the Extension (HTML) view.
  44 const int kIconHorizontalMargin = 1;
  45
  46 class 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
  84 ExtensionInfoBar::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
  95 ExtensionInfoBar::~ExtensionInfoBar() {
  96 }
  97
  98 void 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
 119 void 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
 172 int ExtensionInfoBar::ContentMinimumWidth() {
 173   return NonExtensionViewWidth() +
 174       GetDelegate()->extension_view_host()->view()->GetMinimumSize().width();
 175 }
 176
 177 void ExtensionInfoBar::OnMenuButtonClicked(views::View* source,
 178                                            const gfx::Point& point) {
 179   if (!owner())
 180     return;  // We're closing; don't call anything, it might access the owner.
 181   const extensions::Extension* extension =
 182       GetDelegate()->extension_view_host()->extension();
 183   DCHECK(icon_as_menu_);
 184
 185   scoped_refptr<ExtensionContextMenuModel> options_menu_contents =
 186       new ExtensionContextMenuModel(extension, browser_);
 187   DCHECK_EQ(icon_as_menu_, source);
 188   RunMenuAt(
 189       options_menu_contents.get(), icon_as_menu_, views::MENU_ANCHOR_TOPLEFT);
 190 }
 191
 192 void ExtensionInfoBar::OnImageLoaded(const gfx::Image& image) {
 193   if (!GetDelegate())
 194     return;  // The delegate can go away while we asynchronously load images.
 195
 196   const gfx::ImageSkia* icon = NULL;
 197   // Fall back on the default extension icon on failure.
 198   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 199   if (image.IsEmpty())
 200     icon = rb.GetImageNamed(IDR_EXTENSIONS_SECTION).ToImageSkia();
 201   else
 202     icon = image.ToImageSkia();
 203
 204   if (icon_as_menu_) {
 205     const gfx::ImageSkia* drop_image =
 206         rb.GetImageNamed(IDR_APP_DROPARROW).ToImageSkia();
 207
 208     gfx::CanvasImageSource* source = new MenuImageSource(*icon, *drop_image);
 209     gfx::ImageSkia menu_image = gfx::ImageSkia(source, source->size());
 210     icon_as_menu_->SetIcon(menu_image);
 211   } else {
 212     icon_as_image_->SetImage(*icon);
 213   }
 214
 215   infobar_icon_->SizeToPreferredSize();
 216   infobar_icon_->SetVisible(true);
 217
 218   Layout();
 219 }
 220
 221 ExtensionInfoBarDelegate* ExtensionInfoBar::GetDelegate() {
 222   return delegate()->AsExtensionInfoBarDelegate();
 223 }
 224
 225 int ExtensionInfoBar::NonExtensionViewWidth() const {
 226   return infobar_icon_->width() + kIconHorizontalMargin;
 227 }