Infobars on GTK (first part)....

chrome/browser/gtk/extension_infobar_gtk.cc

+// Copyright (c) 2010 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.
+
+#include "chrome/browser/gtk/extension_infobar_gtk.h"
+
+#include "app/resource_bundle.h"
+#include "chrome/browser/extensions/extension_host.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_resource.h"
+#include "gfx/gtk_util.h"
+#include "grit/theme_resources.h"
+
+ExtensionInfoBarGtk::ExtensionInfoBarGtk(ExtensionInfoBarDelegate* delegate)
+    : InfoBar(delegate),
+      tracker_(this),
+      delegate_(delegate),
+      view_(NULL) {
+  BuildWidgets();
+}
+
+ExtensionInfoBarGtk::~ExtensionInfoBarGtk() {
+  // This view is not owned by us, so unparent.
+  gtk_widget_unparent(view_->native_view());
+}
+
+void ExtensionInfoBarGtk::OnImageLoaded(
+    SkBitmap* image, ExtensionResource resource, int index) {
+  if (!delegate_)
+    return;  // The delegate can go away while we asynchronously load images.
+
+  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
+
+  SkBitmap* icon;
+  if (!image || image->empty())
+    icon = rb.GetBitmapNamed(IDR_EXTENSIONS_SECTION);
+  else
+    icon = image;
+
+  // TODO(finnur): We now have the icon for the menu button, show the menu
+  // button and layout.
+}
+
+void ExtensionInfoBarGtk::BuildWidgets() {
+  // Start loading the image for the menu button.
+  ExtensionResource icon_resource;
+  Extension* extension = delegate_->extension_host()->extension();
+  Extension::Icons size =
+      extension->GetIconPathAllowLargerSize(&icon_resource,
+                                            Extension::EXTENSION_ICON_BITTY);
+  if (!icon_resource.relative_path().empty()) {
+    // Create a tracker to load the image. It will report back on OnImageLoaded.
+    tracker_.LoadImage(extension, icon_resource, gfx::Size(size, size),
+                       ImageLoadingTracker::DONT_CACHE);
+  } else {
+    OnImageLoaded(NULL, icon_resource, 0);  // |image|, |index|.
+  }
+
+  ExtensionHost* extension_host = delegate_->extension_host();
+  view_ = extension_host->view();
+  gtk_box_pack_start(GTK_BOX(hbox_), view_->native_view(), TRUE, TRUE, 0);
+
+  g_signal_connect(view_->native_view(), "size_allocate",
+                   G_CALLBACK(&OnSizeAllocateThunk), this);
+  gtk_widget_show_all(border_bin_.get());
+}
+
+void ExtensionInfoBarGtk::OnSizeAllocate(GtkWidget* widget,
+                                         GtkAllocation* allocation) {
+  gfx::Size new_size(allocation->width, allocation->height);
+
+  // TODO(finnur): Size the infobar based on HTML content (up to 72 pixels).
+}
+
+InfoBar* ExtensionInfoBarDelegate::CreateInfoBar() {
+  return new ExtensionInfoBarGtk(this);
+}