[WebModals] New API for browser-scoped popup management.

components/web_modal/popup_manager.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 "components/web_modal/popup_manager.h"
+
+#include "components/web_modal/web_contents_modal_dialog_host.h"
+#include "components/web_modal/web_contents_modal_dialog_manager.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_user_data.h"
+#include "ui/gfx/geometry/size.h"
+
+using content::WebContents;
+
+namespace web_modal {
+
+namespace {
+
+const char kPopupManagerUserDataKey[] = "PopupManager";
+
+// This class provides a hook to get a PopupManager from a WebContents.
+// The PopupManager is browser-scoped, but will use a FromWebContents API
+// to attach to each WebContents in that browser.
+class PopupManagerRelay : public content::WebContentsUserData<PopupManager> {
+ public:
+  explicit PopupManagerRelay(base::WeakPtr<PopupManager> manager)
+      : manager_(manager) {}
+
+  virtual ~PopupManagerRelay() {}
+
+  base::WeakPtr<PopupManager> manager_;
+};
+
+}  // namespace
+
+PopupManager::PopupManager(WebContentsModalDialogHost* host)
+    : host_(host),
+      weak_factory_(this) {}
+
+PopupManager::~PopupManager() {
+}
+
+void PopupManager::ShowPopup(scoped_ptr<SinglePopupManager> manager) {
+  content::WebContents* web_contents = manager->GetBoundWebContents();
+  // TODO(gbillock): get rid of this when we handle bubbles
+  DCHECK(web_contents);
+
+  // TODO(gbillock): remove when we port the popup management logic to this
+  // class.
+  NativeWebContentsModalDialog dialog =
+      static_cast<NativeWebContentsModalDialog>(manager->popup());
+
+  WebContentsModalDialogManager* wm_manager =
+      WebContentsModalDialogManager::FromWebContents(web_contents);
+  DCHECK(wm_manager);
+  wm_manager->ShowModalDialog(dialog);
+}
+
+void PopupManager::ShowModalDialog(NativePopup popup,
+                                   content::WebContents* web_contents) {
+  // TODO make a new native popup manager and call ShowPopup.
+  // For now just lay off to WCMDM.
+  WebContentsModalDialogManager* manager =
+      WebContentsModalDialogManager::FromWebContents(web_contents);
+  manager->ShowModalDialog(popup);
+}
+
+bool PopupManager::IsWebModalDialogActive(
+    const content::WebContents* web_contents) const {
+  if (web_contents == NULL)
+    return false;
+
+  const WebContentsModalDialogManager* manager =
+      WebContentsModalDialogManager::FromWebContents(web_contents);
+  return manager && manager->IsDialogActive();
+}
+
+void PopupManager::WasFocused(const content::WebContents* web_contents) {
+  if (!IsWebModalDialogActive(web_contents))
+    return;
+
+  const WebContentsModalDialogManager* manager =
+      WebContentsModalDialogManager::FromWebContents(web_contents);
+  if (manager)
+    manager->FocusTopmostDialog();
+}
+
+void PopupManager::WillClose(NativePopup popup) {
+}
+
+void PopupManager::RegisterWith(content::WebContents* web_contents) {
+  web_contents->SetUserData(kPopupManagerUserDataKey,
+                            new PopupManagerRelay(weak_factory_.GetWeakPtr()));
+  // TODO(gbillock): Need to do something more extreme here to manage changing
+  // popup managers with popups in-flight?
+}
+
+void PopupManager::UnregisterWith(content::WebContents* web_contents) {
+  web_contents->RemoveUserData(kPopupManagerUserDataKey);
+  // TODO(gbillock): Need to do something more extreme here to manage changing
+  // popup managers with popups in-flight?
+}
+
+PopupManager* PopupManager::FromWebContents(
+    content::WebContents* web_contents) {
+  PopupManagerRelay* relay = static_cast<PopupManagerRelay*>(
+      web_contents->GetUserData(kPopupManagerUserDataKey));
+  if (!relay)
+    return NULL;
+
+  return relay->manager_.get();
+}
+
+gfx::NativeView PopupManager::GetHostView() const {
+  // TODO(gbillock): replace this with a PopupManagerHost or something.
+  DCHECK(host_);
+  return host_->GetHostView();
+}
+
+void PopupManager::CloseAllDialogsForTesting(
+    content::WebContents* web_contents) {
+  // TODO: re-implement, probably in terms of something in the host_,
+  // or of owned WCMDMs.
+  WebContentsModalDialogManager* manager =
+      WebContentsModalDialogManager::FromWebContents(web_contents);
+  manager->CloseAllDialogs();
+}
+
+}  // namespace web_modal