components: Create web_modal component.

chrome/browser/ui/web_contents_modal_dialog_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 "chrome/browser/ui/web_contents_modal_dialog_manager.h"
-
-#include "chrome/browser/platform_util.h"
-#include "chrome/browser/ui/web_contents_modal_dialog_manager_delegate.h"
-#include "chrome/common/render_messages.h"
-#include "content/public/browser/navigation_details.h"
-#include "content/public/browser/navigation_entry.h"
-#include "content/public/browser/notification_details.h"
-#include "content/public/browser/notification_source.h"
-#include "content/public/browser/notification_types.h"
-#include "content/public/browser/render_view_host.h"
-#include "content/public/browser/web_contents.h"
-#include "content/public/browser/web_contents_view.h"
-#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
-
-using content::WebContents;
-
-DEFINE_WEB_CONTENTS_USER_DATA_KEY(WebContentsModalDialogManager);
-
-WebContentsModalDialogManager::~WebContentsModalDialogManager() {
-  DCHECK(child_dialogs_.empty());
-}
-
-void WebContentsModalDialogManager::ShowDialog(
-    NativeWebContentsModalDialog dialog) {
-  child_dialogs_.push_back(dialog);
-
-  native_manager_->ManageDialog(dialog);
-
-  if (child_dialogs_.size() == 1) {
-    if (IsWebContentsVisible())
-      native_manager_->ShowDialog(dialog);
-    BlockWebContentsInteraction(true);
-  }
-}
-
-bool WebContentsModalDialogManager::IsShowingDialog() const {
-  return !child_dialogs_.empty();
-}
-
-void WebContentsModalDialogManager::FocusTopmostDialog() {
-  DCHECK(!child_dialogs_.empty());
-  native_manager_->FocusDialog(child_dialogs_.front());
-}
-
-content::WebContents* WebContentsModalDialogManager::GetWebContents() const {
-  return web_contents();
-}
-
-void WebContentsModalDialogManager::WillClose(
-    NativeWebContentsModalDialog dialog) {
-  WebContentsModalDialogList::iterator i(
-      std::find(child_dialogs_.begin(), child_dialogs_.end(), dialog));
-
-  // The Views tab contents modal dialog calls WillClose twice.  Ignore the
-  // second invocation.
-  if (i == child_dialogs_.end())
-    return;
-
-  bool removed_topmost_dialog = i == child_dialogs_.begin();
-  child_dialogs_.erase(i);
-  if (!child_dialogs_.empty() && removed_topmost_dialog &&
-      !closing_all_dialogs_)
-    native_manager_->ShowDialog(child_dialogs_.front());
-
-  BlockWebContentsInteraction(!child_dialogs_.empty());
-}
-
-void WebContentsModalDialogManager::Observe(
-    int type,
-    const content::NotificationSource& source,
-    const content::NotificationDetails& details) {
-  DCHECK(type == content::NOTIFICATION_WEB_CONTENTS_VISIBILITY_CHANGED);
-
-  if (child_dialogs_.empty())
-    return;
-
-  bool visible = *content::Details<bool>(details).ptr();
-  if (visible)
-    native_manager_->ShowDialog(child_dialogs_.front());
-  else
-    native_manager_->HideDialog(child_dialogs_.front());
-}
-
-WebContentsModalDialogManager::WebContentsModalDialogManager(
-    content::WebContents* web_contents)
-    : content::WebContentsObserver(web_contents),
-      delegate_(NULL),
-      native_manager_(CreateNativeManager(this)),
-      closing_all_dialogs_(false) {
-  DCHECK(native_manager_);
-  registrar_.Add(this,
-                 content::NOTIFICATION_WEB_CONTENTS_VISIBILITY_CHANGED,
-                 content::Source<content::WebContents>(web_contents));
-}
-
-void WebContentsModalDialogManager::BlockWebContentsInteraction(bool blocked) {
-  WebContents* contents = web_contents();
-  if (!contents) {
-    // The WebContents has already disconnected.
-    return;
-  }
-
-  // RenderViewHost may be NULL during shutdown.
-  content::RenderViewHost* host = contents->GetRenderViewHost();
-  if (host) {
-    host->SetIgnoreInputEvents(blocked);
-    host->Send(new ChromeViewMsg_SetVisuallyDeemphasized(
-        host->GetRoutingID(), blocked));
-  }
-  if (delegate_)
-    delegate_->SetWebContentsBlocked(contents, blocked);
-}
-
-bool WebContentsModalDialogManager::IsWebContentsVisible() const {
-  return platform_util::IsVisible(web_contents()->GetView()->GetNativeView());
-}
-
-void WebContentsModalDialogManager::CloseAllDialogs() {
-  closing_all_dialogs_ = true;
-
-  // Clear out any dialogs since we are leaving this page entirely.
-  while (!child_dialogs_.empty())
-    native_manager_->CloseDialog(child_dialogs_.front());
-
-  closing_all_dialogs_ = false;
-}
-
-void WebContentsModalDialogManager::DidNavigateMainFrame(
-    const content::LoadCommittedDetails& details,
-    const content::FrameNavigateParams& params) {
-  // Close constrained windows if necessary.
-  if (!net::registry_controlled_domains::SameDomainOrHost(
-          details.previous_url, details.entry->GetURL(),
-          net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES))
-    CloseAllDialogs();
-}
-
-void WebContentsModalDialogManager::DidGetIgnoredUIEvent() {
-  if (!child_dialogs_.empty())
-    native_manager_->FocusDialog(child_dialogs_.front());
-}
-
-void WebContentsModalDialogManager::WebContentsDestroyed(WebContents* tab) {
-  // First cleanly close all child dialogs.
-  // TODO(mpcomplete): handle case if MaybeCloseChildWindows() already asked
-  // some of these to close.  CloseAllDialogs is async, so it might get called
-  // twice before it runs.
-  CloseAllDialogs();
-}