Refactor UI "badge" (page action) logic into a BadgeController interface.

chrome/browser/extensions/page_action_controller.cc

+// 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.
+
+#include "chrome/browser/extensions/page_action_controller.h"
+
+#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
+#include "chrome/browser/extensions/extension_browser_event_router.h"
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/extension_system.h"
+#include "chrome/browser/extensions/extension_tab_util.h"
+#include "chrome/common/extensions/extension_set.h"
+#include "content/public/browser/web_contents.h"
+
+namespace extensions {
+
+PageActionController::PageActionController(TabContentsWrapper* tab_contents)
+    : tab_contents_(tab_contents) {}
+
+PageActionController::~PageActionController() {}
+
+scoped_ptr<BadgeController::DataList> PageActionController::GetAllBadgeData() {
+  const ExtensionSet* extensions = GetExtensionService()->extensions();
+  scoped_ptr<DataList> all_badge_data(new DataList());
+  for (ExtensionSet::const_iterator i = extensions->begin();
+       i != extensions->end(); ++i) {
+    ExtensionAction* action = (*i)->page_action();
+    if (action) {
+      Data data = { badge_decoration::NONE, action };
+      all_badge_data->push_back(data);
+    }
+  }
+  return all_badge_data.Pass();
+}
+
+BadgeController::Reaction PageActionController::OnClicked(
+    const std::string& extension_id, int button_type) {

[Evan Stade, 2012/05/11 21:52:08]

is an integer button_type going to easily work for non-gtk platforms? don't we
have some sort of generic enum or cross-platfrom event type?

[not at google - send to devlin, 2012/05/14 03:59:01]

The int matches the value that's being passed into ExtensionBrowserEventRouter;
I was maintaining that system. Looking into it further though, it's only needed
for a deprecated API ("pageActions") so I don't think it's worth putting any
effort into duplication that interface here.

I looked around for an existing enum for this, and looks like there's an event
defined in ui/view/events that's not appropriate, and a bunch of places where
people have written their own enum types. I might as well just do that.

+  const Extension* extension =
+      GetExtensionService()->GetExtensionById(extension_id, false);

[Matt Perry, 2012/05/11 21:15:12]

nit: use extensions()->GetByID(). I think we're phasing out GetExtensionById

[not at google - send to devlin, 2012/05/14 03:59:01]

Done.

+  CHECK(extension);
+  ExtensionAction* page_action = extension->page_action();
+  CHECK(page_action);
+  int tab_id = ExtensionTabUtil::GetTabId(tab_contents_->web_contents());
+
+  switch (button_type) {
+    case 1:  // left
+    case 2:  // middle
+      if (page_action->HasPopup(tab_id))
+        return SHOW_POPUP;
+
+      GetExtensionService()->browser_event_router()->PageActionExecuted(
+          tab_contents_->profile(),
+          extension->id(),
+          page_action->id(),
+          tab_id,
+          tab_contents_->web_contents()->GetURL().spec(),
+          button_type);
+      return NONE;
+
+    case 3:  // right
+      return extension->ShowConfigureContextMenus() ? SHOW_CONTEXT_MENU : NONE;

[Evan Stade, 2012/05/11 21:52:08]

doesn't this complain about missing default case?

[not at google - send to devlin, 2012/05/14 03:59:01]

Not clang, at least. This is an enum now anyway.

+  }
+
+  NOTREACHED();
+  return NONE;
+}
+
+ExtensionService* PageActionController::GetExtensionService() {
+  return ExtensionSystem::Get(tab_contents_->profile())->extension_service();
+}
+
+}  // namespace extensions