[Media Router] Added a warning message about Castouts deprecation.

Bug: 1159209, b/1154342
Change-Id: I67f862c2f1e9cd2f8cfaeb2d73c5e22ebd360bb3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2559589Reviewed-by: Takumi Fujimoto <takumif@chromium.org>
Commit-Queue: John Williams <jrw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#837871}

chrome/app/media_router_strings.grdp

@@ -140,6 +140,14 @@ video files, instead of all files.">
     No Thanks
   </message>
 
+  <!-- Cast-to-meeting deprecation/removal -->
+  <message name="IDS_MEDIA_ROUTER_CAST_TO_MEETING_DEPRECATED" desc="Used in the Cast dialog to inform the user that starting a presentation from the Cast dialog will no longer work, and using meet.google.com will be the only option.">
+    Soon this option will no longer be supported. To present a tab, use <ph name="GOOGLE_MEET">$1<ex>Google Meet</ex></ph>.
+  </message>
+  <message name="IDS_MEDIA_ROUTER_CAST_TO_MEETING_REMOVED" desc="Used in the Cast dialog to inform the user that starting a presentation from the Cast dialog is not longer supported, and using meet.google.com is the only option.">
+    This option is no longer to supported. To present a tab, use <ph name="GOOGLE_MEET">$1<ex>Google Meet</ex></ph>.
+  </message>
+
   <!-- Cloud Services Dialog -->
   <message name="IDS_MEDIA_ROUTER_CLOUD_SERVICES_DIALOG_TITLE" desc="Title of the dialog asking whether the user wants to enable the feature allowing them to Cast to cloud services (Google Hangouts, Google Meet, Cast for Education extension).">
     Enable cloud services for Cast?

chrome/app/media_router_strings_grdp/IDS_MEDIA_ROUTER_CAST_TO_MEETING_DEPRECATED.png.sha1

+375064581a249df7a570f0b38e5519416e009d4f
\ No newline at end of file

chrome/app/media_router_strings_grdp/IDS_MEDIA_ROUTER_CAST_TO_MEETING_REMOVED.png.sha1

+e549a37093dc3274b8345e414ac461ee6c53a287
\ No newline at end of file

chrome/browser/ui/views/media_router/cast_dialog_sink_button.cc

@@ -10,12 +10,19 @@
 #include "base/strings/utf_string_conversions.h"
 #include "build/branding_buildflags.h"
 #include "chrome/app/vector_icons/vector_icons.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/browser_navigator.h"
+#include "chrome/browser/ui/browser_navigator_params.h"
+#include "chrome/browser/ui/browser_tabstrip.h"
+#include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/media_router/ui_media_sink.h"
 #include "chrome/browser/ui/views/chrome_layout_provider.h"
 #include "chrome/browser/ui/views/chrome_typography.h"
 #include "chrome/browser/ui/views/media_router/cast_dialog_helper.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/media_router/common/issue.h"
+#include "components/strings/grit/components_strings.h"
 #include "components/vector_icons/vector_icons.h"
 #include "content/public/browser/browser_thread.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -27,6 +34,7 @@
 #include "ui/views/controls/color_tracking_icon_view.h"
 #include "ui/views/controls/styled_label.h"
 #include "ui/views/controls/throbber.h"
+#include "ui/views/layout/box_layout.h"
 #include "ui/views/vector_icons.h"
 
 #if BUILDFLAG(GOOGLE_CHROME_BRANDING)
@@ -95,6 +103,99 @@ base::string16 GetStatusTextForSink(const UIMediaSink& sink) {
   }
 }
 
+// Find the index of a tab whose URL matches the given origin and path.  In the
+// case of multiple matches, the active tab is given priority, otherwise returns
+// the index of an arbitrary tab.
+base::Optional<int> FindTabWithUrlPrefix(TabStripModel* tabs,
+                                         const GURL& origin,
+                                         base::StringPiece path) {
+  base::Optional<int> to_activate;
+  for (int i = 0; i < tabs->count(); i++) {
+    auto* content = tabs->GetWebContentsAt(i);
+    const GURL& url = content->GetVisibleURL();
+    if (url.GetOrigin() == origin && url.path() == path) {
+      to_activate = i;
+      if (tabs->active_index() <= i)
+        break;
+    }
+  }
+  return to_activate;
+}
+
+// Selects or creates a tab for a meeting ID.  Tries to select an existing tab
+// in the current window or some other window, and if no tab is found, opens a
+// new tab for the meeting.
+//
+// If there is no meeting ID, this function just selects or creates a tab
+// showing the start page of Google Meet.
+void ShowMeetTab(Profile* profile,
+                 const base::Optional<std::string>& meeting_id) {
+  const GURL origin("https://meet.google.com");
+  const std::string path = meeting_id ? "/" + *meeting_id : std::string();
+
+  const auto& browsers = *BrowserList::GetInstance();
+  for (auto iter = browsers.begin_last_active();
+       iter != browsers.end_last_active(); ++iter) {
+    Browser* browser = *iter;
+    if (browser->profile() == profile && browser->window() &&
+        browser->is_type_normal()) {
+      auto* tabs = browser->tab_strip_model();
+      auto tab_index = FindTabWithUrlPrefix(tabs, origin, path);
+      if (tab_index.has_value()) {
+        browser->window()->Show();
+        tabs->ActivateTabAt(tab_index.value());
+        return;
+      }
+    }
+  }
+
+  NavigateParams params(profile, origin.Resolve(path),
+                        ui::PAGE_TRANSITION_FIRST);
+  params.disposition = WindowOpenDisposition::NEW_FOREGROUND_TAB;
+  Navigate(&params);
+}
+
+class CastToMeetingDeprecationWarningView : public views::View {
+ public:
+  CastToMeetingDeprecationWarningView(const std::string& sink_id,
+                                      Profile* profile) {
+    DCHECK(profile);
+
+    auto* layout = SetLayoutManager(std::make_unique<views::BoxLayout>());
+    layout->set_inside_border_insets(gfx::Insets(5));
+    layout->set_cross_axis_alignment(
+        views::BoxLayout::CrossAxisAlignment::kStart);
+
+    // Add space to line up with text in receiver list.
+    auto* spacer = AddChildView(std::make_unique<views::View>());
+    spacer->SetPreferredSize(gfx::Size(55, 1));
+
+    base::string16 text =
+        l10n_util::GetStringUTF16(IDS_MEDIA_ROUTER_CAST_TO_MEETING_DEPRECATED);
+    std::vector<base::string16> substrings{base::ASCIIToUTF16("Google Meet")};
+    std::vector<size_t> offsets;
+    text = base::ReplaceStringPlaceholders(text, substrings, &offsets);
+
+    auto* label = AddChildView(std::make_unique<views::StyledLabel>());
+    label->SetText(text);
+
+    // Try to extract a meeting ID from a sink ID.  This should always succeed
+    // unless the "meeting" is actually a Hangout, or if the wrong version of
+    // the Cast extension is installed.
+    base::Optional<std::string> meeting_id;
+    if (sink_id.size() == 17 && base::StartsWith(sink_id, "meet:")) {
+      meeting_id = sink_id.substr(5);
+    }
+
+    gfx::Range link_range(offsets[0], offsets[0] + substrings[0].length());
+    auto link_style =
+        views::StyledLabel::RangeStyleInfo::CreateForLink(base::BindRepeating(
+            &ShowMeetTab, base::Unretained(profile), meeting_id));
+    link_style.disable_line_wrapping = false;
+    label->AddStyleRange(link_range, link_style);
+  }
+};
+
 }  // namespace
 
 CastDialogSinkButton::CastDialogSinkButton(PressedCallback callback,
@@ -206,6 +307,19 @@ void CastDialogSinkButton::OnBlur() {
     RestoreStatusText();
 }
 
+std::unique_ptr<views::View>
+CastDialogSinkButton::MakeCastToMeetingDeprecationWarningView(
+    Profile* profile) {
+  switch (sink_.icon_type) {
+    case SinkIconType::MEETING:
+    case SinkIconType::HANGOUT:
+      return std::make_unique<CastToMeetingDeprecationWarningView>(sink_.id,
+                                                                   profile);
+    default:
+      return nullptr;
+  }
+}
+
 // static
 const gfx::VectorIcon* CastDialogSinkButton::GetVectorIcon(
     SinkIconType icon_type) {

chrome/browser/ui/views/media_router/cast_dialog_sink_button.h

@@ -5,10 +5,14 @@
 #ifndef CHROME_BROWSER_UI_VIEWS_MEDIA_ROUTER_CAST_DIALOG_SINK_BUTTON_H_
 #define CHROME_BROWSER_UI_VIEWS_MEDIA_ROUTER_CAST_DIALOG_SINK_BUTTON_H_
 
+#include <memory>
+
 #include "base/bind.h"
 #include "chrome/browser/ui/media_router/ui_media_sink.h"
 #include "chrome/browser/ui/views/hover_button.h"
 
+class Profile;
+
 namespace ui {
 class MouseEvent;
 }
@@ -34,6 +38,13 @@ class CastDialogSinkButton : public HoverButton {
 
   const UIMediaSink& sink() const { return sink_; }
 
+  // If this button will cast to a meeting, creates a view showing a warning
+  // about the feature being deprecated.  Otherwise returns nullptr.  The
+  // |profile| parameter is used to open the meeting tab the the user clicks on
+  // the link in the warning.
+  std::unique_ptr<views::View> MakeCastToMeetingDeprecationWarningView(
+      Profile* profile);
+
   static const gfx::VectorIcon* GetVectorIcon(SinkIconType icon_type);
 
  private:

chrome/browser/ui/views/media_router/cast_dialog_view.cc

@@ -223,6 +223,7 @@ CastDialogView::CastDialogView(views::View* anchor_view,
       controller_(controller),
       profile_(profile),
       metrics_(start_time, activation_location, profile) {
+  DCHECK(profile);
   SetShowCloseButton(true);
   SetButtons(ui::DIALOG_BUTTON_NONE);
   set_fixed_width(views::LayoutProvider::Get()->GetDistanceMetric(
@@ -319,11 +320,22 @@ void CastDialogView::PopulateScrollView(const std::vector<UIMediaSink>& sinks) {
   sink_list_view->SetLayoutManager(std::make_unique<views::BoxLayout>(
       views::BoxLayout::Orientation::kVertical));
   for (size_t i = 0; i < sinks.size(); i++) {
-    sink_buttons_.push_back(
+    auto* sink_button =
         sink_list_view->AddChildView(std::make_unique<CastDialogSinkButton>(
             base::BindRepeating(&CastDialogView::SinkPressed,
                                 base::Unretained(this), i),
-            sinks.at(i))));
+            sinks.at(i)));
+    sink_buttons_.push_back(sink_button);
+
+    // This could potentially add a lot of warnings to the receiver list, but in
+    // practice a user is unlikely to have more than one or two meetings in the
+    // list at any given time, and repeating the warning is probably better than
+    // having the user ignore possibly the warning if it's only shown for a
+    // meeting they're not trying to cast to.
+    auto warning_view =
+        sink_button->MakeCastToMeetingDeprecationWarningView(profile_);
+    if (warning_view)
+      sink_list_view->AddChildView(std::move(warning_view));
   }
   scroll_view_->SetContents(std::move(sink_list_view));