Allow platform apps to add themselves to the Action Box.

chrome/browser/ui/toolbar/action_box_button_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/ui/toolbar/action_box_button_controller.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/utf_string_conversions.h"
+#include "chrome/app/chrome_command_ids.h"
+#include "chrome/browser/extensions/api/page_launcher/page_launcher_api.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/toolbar/action_box_menu_model.h"
 #include "chrome/common/chrome_notification_types.h"
+#include "chrome/common/extensions/api/extension_action/action_info.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_set.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
-#include "grit/generated_resources.h"
-#include "webkit/glue/webkit_glue.h"
-
-namespace {
-
-// Share intents get command IDs that are beyond the maximal valid command ID
-// (0xDFFF) so that they are not confused with actual commands that appear in
-// the menu. Extensions get a reserved block of commands after share handlers.
-// For more details see: chrome/app/chrome_command_ids.h
-const int kMaxShareItemsToShow = 20;  // TODO(skare): Show extras in submenu.
-enum ActionBoxLocalCommandIds {
-  CWS_FIND_SHARE_INTENTS_COMMAND = 0xE000,
-  SHARE_COMMAND_FIRST,
-  SHARE_COMMAND_LAST =
-      SHARE_COMMAND_FIRST + kMaxShareItemsToShow - 1,
-  EXTENSION_COMMAND_FIRST
-};
-
-}  // namespace
 
 using content::UserMetricsAction;
+using content::WebContents;
+using extensions::ActionInfo;
+
+void ActionBoxButtonController::Delegate::ShowMenu(
+    scoped_ptr<ActionBoxMenuModel> menu_model) {
+}
 
 ActionBoxButtonController::ActionBoxButtonController(Browser* browser,
                                                      Delegate* delegate)
     : browser_(browser),
       delegate_(delegate),
-      next_extension_command_id_(EXTENSION_COMMAND_FIRST) {
+      next_command_id_(0) {
   DCHECK(browser_);
   DCHECK(delegate_);
   registrar_.Add(this,
                  chrome::NOTIFICATION_EXTENSION_UNLOADED,
                  content::Source<Profile>(browser->profile()));
 }
 
 ActionBoxButtonController::~ActionBoxButtonController() {}
 
 void ActionBoxButtonController::OnButtonClicked() {
   // Build a menu model and display the menu.
   scoped_ptr<ActionBoxMenuModel> menu_model(
       new ActionBoxMenuModel(browser_, this));
 
-  ExtensionService* extension_service =
+  const ExtensionSet* extensions =
       extensions::ExtensionSystem::Get(browser_->profile())->
-          extension_service();
-
-  // Add Extensions.
-  next_extension_command_id_ = EXTENSION_COMMAND_FIRST;
-  extension_command_ids_.clear();
-  const extensions::ExtensionList& extensions =
-      extension_service->toolbar_model()->action_box_menu_items();
-  for (extensions::ExtensionList::const_iterator it = extensions.begin();
-       it != extensions.end(); ++it) {
-    menu_model->AddExtension(**it, GetCommandIdForExtension(**it));
+          extension_service()->extensions();
+  for (ExtensionSet::const_iterator it = extensions->begin();
+       it != extensions->end(); ++it) {
+    const extensions::Extension* extension = *it;
+    if (ActionInfo::GetPageLauncherInfo(extension)) {
+      int command_id = GetCommandIdForExtension(*extension);
+      menu_model->AddExtension(*extension, command_id);
+    }
   }
+  content::RecordAction(UserMetricsAction("ActionBox.ClickButton"));
 
   // And show the menu.
   delegate_->ShowMenu(menu_model.Pass());
 }
 
 bool ActionBoxButtonController::IsCommandIdChecked(int command_id) const {
   return false;
 }
 
 bool ActionBoxButtonController::IsCommandIdEnabled(int command_id) const {
   return true;
 }
 
 bool ActionBoxButtonController::GetAcceleratorForCommandId(
     int command_id,
     ui::Accelerator* accelerator) {
   return false;
 }
 
 void ActionBoxButtonController::ExecuteCommand(int command_id) {
-  // Handle commands associated with extensions.
-  // Note that the extension might have been uninstalled or disabled while the
-  // menu was open (sync perhaps?) but that will just fall through safely.
-  const extensions::Extension* extension =
-      GetExtensionForCommandId(command_id);
-  if (extension) {
-    // TODO(kalman): do something with the result.
-    extensions::ExtensionSystem::Get(browser_->profile())->
-        extension_service()->toolbar_model()->ExecuteBrowserAction(
-            extension, browser_, NULL);
+  // If the command id belongs to an extension, dispatch an onClicked event
+  // to its pageLauncher.
+  ExtensionIdCommandMap::const_iterator it =
+      extension_command_ids_.find(command_id);
+  if (it != extension_command_ids_.end()) {
+    WebContents* web_contents =
+        browser_->tab_strip_model()->GetActiveWebContents();
+    // TODO(rfevang): Send page title and selected text.
+    extensions::PageLauncherAPI::DispatchOnClickedEvent(
+        browser_->profile(),
+        it->second,
+        web_contents->GetURL(),
+        web_contents->GetContentsMimeType(),
+        NULL,
+        NULL);
     return;
   }
 
   // Otherwise, let the browser handle the command.
   chrome::ExecuteCommand(browser_, command_id);
 }
 
 int ActionBoxButtonController::GetCommandIdForExtension(
     const extensions::Extension& extension) {
-  ExtensionIdCommandMap::iterator it =
-      extension_command_ids_.find(extension.id());
-  if (it != extension_command_ids_.end())
-    return it->second;
-  int command_id = next_extension_command_id_++;
+  for (ExtensionIdCommandMap::const_iterator it =
+       extension_command_ids_.begin();
+       it != extension_command_ids_.end(); ++it) {
+    if (it->second == extension.id())
+      return it->first;
+  }
 
-  // Note that we deliberately don't clean up extension IDs here when
-  // extensions are unloaded, so that if they're reloaded they get assigned the
-  // old command ID. This situation could arise if an extension is updated
-  // while the menu is open. On the other hand, we leak some memory... but
-  // that's unlikely to matter.
-  extension_command_ids_[extension.id()] = command_id;
+  int command_id = GetNextCommandId();
+  extension_command_ids_[command_id] = extension.id();
 
   return command_id;
 }
 
-const extensions::Extension*
-    ActionBoxButtonController::GetExtensionForCommandId(int command_id) {
-  for (ExtensionIdCommandMap::iterator it = extension_command_ids_.begin();
-       it != extension_command_ids_.end(); ++it) {
-    if (it->second == command_id) {
-      // Note: might be NULL anyway if the extension has been uninstalled.
-      return extensions::ExtensionSystem::Get(browser_->profile())->
-          extension_service()->extensions()->GetByID(it->first);
-    }
-  }
+int ActionBoxButtonController::GetNextCommandId() {
+  int command_id = next_command_id_;
+  // Find an available command id to return next time the function is called.
+  do {
+    next_command_id_++;
+    // Larger command ids are reserved for non-dynamic entries, so we start
+    // reusing old ids at this point.
+    if (next_command_id_ >= IDC_MinimumLabelValue)
+      next_command_id_ = 0;
+  } while (extension_command_ids_.find(next_command_id_) !=
+           extension_command_ids_.end());
 
-  return NULL;
+  return command_id;
 }
 
 void ActionBoxButtonController::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK_EQ(type, chrome::NOTIFICATION_EXTENSION_UNLOADED);
   const extensions::Extension* extension =
       content::Details<extensions::UnloadedExtensionInfo>(details)->extension;
 
+  // Remove any entry point command ids associated with the extension.
+  for (ExtensionIdCommandMap::iterator it = extension_command_ids_.begin();
+       it != extension_command_ids_.end();) {
+    if (it->second== extension->id())
+      extension_command_ids_.erase(it++);
+    else
+      ++it;
+  }
   // TODO(kalman): if there's a menu open, remove it from that too.
   // We may also want to listen to EXTENSION_LOADED to do the opposite.
-  extension_command_ids_.erase(extension->id());
 }