[Extensions] Remove the Infobar API

chrome/browser/ui/cocoa/infobars/extension_infobar_controller.mm

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#import "chrome/browser/ui/cocoa/infobars/extension_infobar_controller.h"
-
-#include "chrome/browser/extensions/extension_infobar_delegate.h"
-#include "chrome/browser/extensions/extension_context_menu_model.h"
-#include "chrome/browser/extensions/extension_view.h"
-#include "chrome/browser/extensions/extension_view_host.h"
-#include "chrome/browser/infobars/infobar_service.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/ui/browser_finder.h"
-#import "chrome/browser/ui/cocoa/animatable_view.h"
-#include "chrome/browser/ui/cocoa/infobars/infobar_cocoa.h"
-#import "chrome/browser/ui/cocoa/menu_button.h"
-#include "content/public/browser/web_contents.h"
-#include "extensions/browser/image_loader.h"
-#include "extensions/common/constants.h"
-#include "extensions/common/extension.h"
-#include "extensions/common/extension_icon_set.h"
-#include "extensions/common/extension_resource.h"
-#include "extensions/common/manifest_handlers/icons_handler.h"
-#include "grit/theme_resources.h"
-#include "skia/ext/skia_utils_mac.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/gfx/canvas.h"
-#import "ui/base/cocoa/menu_controller.h"
-#include "ui/gfx/image/image.h"
-
-const CGFloat kBottomBorderHeightPx = 1.0;
-const CGFloat kButtonHeightPx = 26.0;
-const CGFloat kButtonLeftMarginPx = 2.0;
-const CGFloat kButtonWidthPx = 34.0;
-const CGFloat kDropArrowLeftMarginPx = 3.0;
-const CGFloat kToolbarMinHeightPx = 36.0;
-const CGFloat kToolbarMaxHeightPx = 72.0;
-
-@interface ExtensionInfoBarController(Private)
-// Called when the extension's hosted NSView has been resized.
-- (void)extensionViewFrameChanged;
-// Returns the clamped height of the extension view to be within the min and max
-// values defined above.
-- (CGFloat)clampedExtensionViewHeight;
-// Adjusts the width of the extension's hosted view to match the window's width
-// and sets the proper height for it as well.
-- (void)adjustExtensionViewSize;
-// Sets the image to be used in the button on the left side of the infobar.
-- (void)setButtonImage:(NSImage*)image;
-@end
-
-// A helper class to bridge the asynchronous Skia bitmap loading mechanism to
-// the extension's button.
-class InfobarBridge {
- public:
-  explicit InfobarBridge(ExtensionInfoBarController* owner)
-      : owner_(owner),
-        delegate_([owner delegate]->AsExtensionInfoBarDelegate()),
-        weak_ptr_factory_(this) {
-    LoadIcon();
-  }
-
-  // Load the Extension's icon image.
-  void LoadIcon() {
-    const extensions::Extension* extension = delegate_->extension_view_host()->
-        extension();
-    extensions::ExtensionResource icon_resource =
-        extensions::IconsInfo::GetIconResource(
-            extension,
-            extension_misc::EXTENSION_ICON_BITTY,
-            ExtensionIconSet::MATCH_EXACTLY);
-    extensions::ImageLoader* loader = extensions::ImageLoader::Get(
-        delegate_->extension_view_host()->browser_context());
-    loader->LoadImageAsync(extension, icon_resource,
-                           gfx::Size(extension_misc::EXTENSION_ICON_BITTY,
-                                     extension_misc::EXTENSION_ICON_BITTY),
-                           base::Bind(&InfobarBridge::OnImageLoaded,
-                                      weak_ptr_factory_.GetWeakPtr()));
-  }
-
-  // ImageLoader callback.
-  // TODO(andybons): The infobar view implementations share a lot of the same
-  // code. Come up with a strategy to share amongst them.
-  void OnImageLoaded(const gfx::Image& image) {
-    if (!delegate_)
-      return;  // The delegate can go away while the image asynchronously loads.
-
-    ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-
-    // Fall back on the default extension icon on failure.
-    const gfx::ImageSkia* icon;
-    if (image.IsEmpty())
-      icon = rb.GetImageSkiaNamed(IDR_EXTENSIONS_SECTION);
-    else
-      icon = image.ToImageSkia();
-
-    gfx::ImageSkia* drop_image = rb.GetImageSkiaNamed(IDR_APP_DROPARROW);
-
-    const int image_size = extension_misc::EXTENSION_ICON_BITTY;
-    scoped_ptr<gfx::Canvas> canvas(
-        new gfx::Canvas(
-            gfx::Size(image_size + kDropArrowLeftMarginPx + drop_image->width(),
-                      image_size), 1.0f, false));
-    canvas->DrawImageInt(*icon,
-                         0, 0, icon->width(), icon->height(),
-                         0, 0, image_size, image_size,
-                         false);
-    canvas->DrawImageInt(*drop_image,
-                         image_size + kDropArrowLeftMarginPx,
-                         image_size / 2);
-    [owner_ setButtonImage:gfx::SkBitmapToNSImage(
-        canvas->ExtractImageRep().sk_bitmap())];
-  }
-
- private:
-  // Weak. Owns us.
-  ExtensionInfoBarController* owner_;
-
-  // Weak.
-  ExtensionInfoBarDelegate* delegate_;
-
-  base::WeakPtrFactory<InfobarBridge> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(InfobarBridge);
-};
-
-
-@implementation ExtensionInfoBarController
-
-- (id)initWithInfoBar:(InfoBarCocoa*)infobar {
-  if ((self = [super initWithInfoBar:infobar])) {
-    dropdownButton_.reset([[MenuButton alloc] init]);
-    [dropdownButton_ setOpenMenuOnClick:YES];
-
-    base::scoped_nsobject<NSMenu> contextMenu(
-        [[NSMenu alloc] initWithTitle:@""]);
-    [contextMenu setDelegate:self];
-    // See menu_button.h for documentation on why this is needed.
-    [contextMenu addItemWithTitle:@"" action:NULL keyEquivalent:@""];
-    [dropdownButton_ setAttachedMenu:contextMenu];
-
-    bridge_.reset(new InfobarBridge(self));
-  }
-  return self;
-}
-
-- (void)dealloc {
-  [[NSNotificationCenter defaultCenter] removeObserver:self];
-  [super dealloc];
-}
-
-- (void)addAdditionalControls {
-  [self removeButtons];
-
-  extensionView_ = [self delegate]->AsExtensionInfoBarDelegate()
-      ->extension_view_host()->view()->GetNativeView();
-
-  // Add the extension's RenderWidgetHostView to the view hierarchy of the
-  // InfoBar and make sure to place it below the Close button.
-  [infoBarView_ addSubview:extensionView_
-                positioned:NSWindowBelow
-                relativeTo:(NSView*)closeButton_];
-
-  // Add the context menu button to the hierarchy.
-  [dropdownButton_ setShowsBorderOnlyWhileMouseInside:YES];
-  CGFloat buttonY =
-      std::floor(NSMidY([infoBarView_ frame]) - (kButtonHeightPx / 2.0)) +
-          kBottomBorderHeightPx;
-  NSRect buttonFrame = NSMakeRect(
-      kButtonLeftMarginPx, buttonY, kButtonWidthPx, kButtonHeightPx);
-  [dropdownButton_ setFrame:buttonFrame];
-  [dropdownButton_ setAutoresizingMask:NSViewMinYMargin | NSViewMaxYMargin];
-  [infoBarView_ addSubview:dropdownButton_];
-
-  // Because the parent view has a bottom border, account for it during
-  // positioning.
-  NSRect extensionFrame = [extensionView_ frame];
-  extensionFrame.origin.y = kBottomBorderHeightPx;
-
-  [extensionView_ setFrame:extensionFrame];
-  // The extension's native view will only have a height that is non-zero if it
-  // already has been loaded and rendered, which is the case when you switch
-  // back to a tab with an extension infobar within it. The reason this is
-  // needed is because the extension view's frame will not have changed in the
-  // above case, so the NSViewFrameDidChangeNotification registered below will
-  // never fire.
-  if (NSHeight(extensionFrame) > 0.0)
-    [self infobar]->SetBarTargetHeight([self clampedExtensionViewHeight]);
-
-  [self adjustExtensionViewSize];
-
-  // These two notification handlers are here to ensure the width of the
-  // native extension view is the same as the browser window's width and that
-  // the parent infobar view matches the height of the extension's native view.
-  [[NSNotificationCenter defaultCenter]
-      addObserver:self
-         selector:@selector(extensionViewFrameChanged)
-             name:NSViewFrameDidChangeNotification
-           object:extensionView_];
-
-  [[NSNotificationCenter defaultCenter]
-      addObserver:self
-         selector:@selector(adjustExtensionViewSize)
-             name:NSViewFrameDidChangeNotification
-           object:[self view]];
-}
-
-- (void)infobarWillHide {
-  [[dropdownButton_ menu] cancelTracking];
-  [super infobarWillHide];
-}
-
-- (void)infobarWillClose {
-  [self disablePopUpMenu:[dropdownButton_ menu]];
-  [super infobarWillClose];
-}
-
-- (void)extensionViewFrameChanged {
-  [self adjustExtensionViewSize];
-  [self infobar]->SetBarTargetHeight([self clampedExtensionViewHeight]);
-}
-
-- (CGFloat)clampedExtensionViewHeight {
-  CGFloat height = [self delegate]->AsExtensionInfoBarDelegate()->height();
-  return std::max(kToolbarMinHeightPx, std::min(height, kToolbarMaxHeightPx));
-}
-
-- (void)adjustExtensionViewSize {
-  [extensionView_ setPostsFrameChangedNotifications:NO];
-  NSSize extensionViewSize = [extensionView_ frame].size;
-  extensionViewSize.width = NSWidth([[self view] frame]);
-  extensionViewSize.height = [self clampedExtensionViewHeight];
-  [extensionView_ setFrameSize:extensionViewSize];
-  [extensionView_ setPostsFrameChangedNotifications:YES];
-}
-
-- (void)setButtonImage:(NSImage*)image {
-  [dropdownButton_ setImage:image];
-}
-
-- (void)menuNeedsUpdate:(NSMenu*)menu {
-  DCHECK([self isOwned]);
-
-  if (!contextMenuController_) {
-    extensions::ExtensionViewHost* extensionViewHost =
-        [self delegate]->AsExtensionInfoBarDelegate()->extension_view_host();
-    Browser* browser = chrome::FindBrowserWithWebContents(
-        [self delegate]->AsExtensionInfoBarDelegate()->GetWebContents());
-    contextMenuModel_ = make_scoped_refptr(new ExtensionContextMenuModel(
-        extensionViewHost->extension(), browser));
-    contextMenuController_.reset(
-        [[MenuController alloc] initWithModel:contextMenuModel_.get()
-                       useWithPopUpButtonCell:NO]);
-  }
-
-  [menu removeAllItems];
-  [contextMenuController_ menuNeedsUpdate:menu];
-}
-
-@end
-
-// static
-scoped_ptr<infobars::InfoBar> ExtensionInfoBarDelegate::CreateInfoBar(
-    scoped_ptr<ExtensionInfoBarDelegate> delegate) {
-  scoped_ptr<InfoBarCocoa> infobar(new InfoBarCocoa(delegate.Pass()));
-  base::scoped_nsobject<ExtensionInfoBarController> controller(
-      [[ExtensionInfoBarController alloc] initWithInfoBar:infobar.get()]);
-  infobar->set_controller(controller);
-  return infobar.Pass();
-}