Preview CL for adding an Infobar facility to Google Chrome Frame....

chrome_frame/infobars/manager.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_frame/infobars/manager.h"
+
+#include "base/logging.h"
+#include "base/scoped_ptr.h"
+#include "chrome_frame/infobars/internal/host_window.h"
+#include "chrome_frame/infobars/internal/infobar_window.h"
+
+// Connects InfobarWindow to HostWindowManager, and exposes the result as an
+// InfobarManager.
+class InfobarManagerImpl
+    : public InfobarManager,
+      public InfobarWindow::Host,
+      public HostWindowManager::Delegate {
+ public:
+  explicit InfobarManagerImpl(HostWindowManager* manager);
+
+  // Implementation of InfobarManager
+  virtual bool Show(InfobarContent* content, InfobarType type);
+  virtual void Hide(InfobarType type);
+  virtual void HideAll();
+
+  // Implementation of HostWindowManager::Delegate
+  virtual void AdjustDisplacedWindowDimensions(RECT* rect);
+
+  // Implementation of InfobarWindow::Host
+  virtual HWND GetContainerWindow();
+  virtual void UpdateLayout();
+
+ private:
+  // Not owned by this instance.
+  HostWindowManager* manager_;
+  // Infobar windows.
+  scoped_ptr<InfobarWindow> infobars_[END_OF_INFOBAR_TYPE];
+  DISALLOW_COPY_AND_ASSIGN(InfobarManagerImpl);
+};  // class InfobarManagerImpl
+
+InfobarManagerImpl::InfobarManagerImpl(HostWindowManager* manager)
+    : manager_(manager) {
+  for (int index = 0; index < END_OF_INFOBAR_TYPE; ++index) {
+    infobars_[index].reset(
+        new InfobarWindow(static_cast<InfobarType>(index)));
+    infobars_[index]->SetHost(this);
+  }
+}
+
+bool InfobarManagerImpl::Show(InfobarContent* content, InfobarType type) {
+  DCHECK(type >= FIRST_INFOBAR_TYPE && type < END_OF_INFOBAR_TYPE);
+  return infobars_[type]->Show(content);
+}
+
+void InfobarManagerImpl::Hide(InfobarType type) {
+  DCHECK(type >= FIRST_INFOBAR_TYPE && type < END_OF_INFOBAR_TYPE);
+  infobars_[type]->Hide();
+}
+
+void InfobarManagerImpl::HideAll() {
+  for (int index = 0; index < END_OF_INFOBAR_TYPE; ++index)
+    Hide(static_cast<InfobarType>(index));
+}
+
+void InfobarManagerImpl::AdjustDisplacedWindowDimensions(RECT* rect) {
+  for (int index = 0; index < END_OF_INFOBAR_TYPE; ++index) {
+    if (infobars_[index] != NULL)
+      infobars_[index]->ReserveSpace(rect);
+  }
+}
+
+HWND InfobarManagerImpl::GetContainerWindow() {
+  return *manager_;
+}
+
+void InfobarManagerImpl::UpdateLayout() {
+  manager_->UpdateLayout();
+}
+
+InfobarManager::~InfobarManager() {
+}
+
+InfobarManager* InfobarManager::Get(HWND tab_window) {
+  HostWindowManager::Delegate* delegate =
+      HostWindowManager::GetDelegateForHwnd(tab_window);
+
+  if (delegate != NULL)
+    return static_cast<InfobarManagerImpl*>(delegate);
+
+  scoped_ptr<HostWindowManager> host_manager(new HostWindowManager());
+
+  // Transferred to host_manager in call to Initialize.
+  InfobarManagerImpl* infobar_manager = new InfobarManagerImpl(
+      host_manager.get());
+
+  if (host_manager->Initialize(tab_window, infobar_manager)) {
+    host_manager.release();  // takes ownership of itself
+    return infobar_manager;
+  }
+
+  return NULL;
+}