Implement bluetooth chooser for Chrome Apps on non-Mac desktops

chrome/browser/ui/views/extensions/chooser_dialog_view.cc

+// Copyright 2016 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/views/extensions/chooser_dialog_view.h"
+
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/extensions/chrome_extension_chooser_dialog.h"
+#include "chrome/browser/ui/views/chooser_content_view.h"
+#include "chrome/grit/generated_resources.h"
+#include "components/chooser_controller/chooser_controller.h"
+#include "components/constrained_window/constrained_window_views.h"
+#include "components/url_formatter/elide_url.h"
+#include "components/web_modal/web_contents_modal_dialog_manager.h"
+#include "content/public/browser/browser_thread.h"
+#include "extensions/browser/extension_registry.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/views/controls/styled_label.h"
+#include "ui/views/controls/table/table_view.h"
+#include "ui/views/layout/box_layout.h"
+#include "ui/views/layout/layout_constants.h"
+#include "ui/views/window/dialog_client_view.h"
+#include "url/origin.h"
+
+namespace {
+
+const int kChooserDialogWidth = 300;

[msw, 2016/06/08 01:16:32]

nit: these are shared between dialog & bubble, add them to ChooserView?

[juncai, 2016/06/09 01:59:53]

Done.

+
+const int kChooserDialogHeight = 200;
+
+}  // namespace
+
+ChooserDialogView::ChooserDialogView(content::WebContents* web_contents,
+                                     ChooserController* chooser_controller)
+    : web_contents_(web_contents), chooser_controller_(chooser_controller) {
+  // ------------------------------------

[msw, 2016/06/08 01:16:32]

I'm starting to wonder if ChooserView should implement/encapsulate more
functionality as a DialogClientView... Then the bubble and dialog delegates
would have less redundant code and responsibilities. WDYT?

[juncai, 2016/06/09 01:59:53]

Changed ChooserContentView to be a subclass of views::View and override
GetContentsView() to return an instance of ChooserContentView.

+  // | Chooser dialog title             |
+  // | -------------------------------- |
+  // | | option 0                     | |
+  // | | option 1                     | |
+  // | | option 2                     | |
+  // | |                              | |
+  // | |                              | |
+  // | |                              | |
+  // | -------------------------------- |
+  // |           [ Connect ] [ Cancel ] |
+  // |----------------------------------|
+  // | Not seeing your device? Get help |
+  // ------------------------------------
+
+  DCHECK(web_contents_);
+
+  chooser_content_view_.reset(
+      new ChooserContentView(this, chooser_controller_));
+
+  table_view_ = chooser_content_view_->table_view();

[msw, 2016/06/08 01:16:32]

ditto nit (from other CL): remove this member.

[juncai, 2016/06/09 01:59:53]

Done.

+  table_model_ = table_view_->model();

[msw, 2016/06/08 01:16:32]

ditto nit (from other CL): remove this member.

[juncai, 2016/06/09 01:59:53]

Done.

+
+  views::BoxLayout* layout = new views::BoxLayout(
+      views::BoxLayout::kVertical, 0, 0, views::kRelatedControlVerticalSpacing);
+  SetLayoutManager(layout);
+  views::View* table_parent = table_view_->CreateParentIfNecessary();
+  AddChildView(table_parent);
+  layout->SetFlexForView(table_parent, 1);
+}
+
+ChooserDialogView::~ChooserDialogView() {
+  table_view_->SetModel(nullptr);

[msw, 2016/06/08 01:16:32]

Do these in the ChooserView dtor?

[juncai, 2016/06/09 01:59:53]

Done.

+  table_model_->SetObserver(nullptr);
+}
+
+gfx::Size ChooserDialogView::GetPreferredSize() const {
+  return gfx::Size(kChooserDialogWidth, kChooserDialogHeight);
+}
+
+base::string16 ChooserDialogView::GetWindowTitle() const {
+  base::string16 chooser_title;
+  url::Origin origin = chooser_controller_->GetOrigin();
+  content::BrowserContext* browser_context = web_contents_->GetBrowserContext();
+  extensions::ExtensionRegistry* extension_registry =
+      extensions::ExtensionRegistry::Get(browser_context);
+  if (extension_registry) {
+    const extensions::Extension* extension =
+        extension_registry->enabled_extensions().GetExtensionOrAppByURL(
+            GURL(origin.Serialize()));
+    if (extension)
+      chooser_title = base::UTF8ToUTF16(extension->name());
+  }
+
+  if (chooser_title.empty()) {
+    chooser_title = url_formatter::FormatOriginForSecurityDisplay(
+        origin, url_formatter::SchemeDisplay::OMIT_CRYPTOGRAPHIC);
+  }
+
+  return l10n_util::GetStringFUTF16(IDS_CHOOSER_BUBBLE_PROMPT, chooser_title);
+}
+
+bool ChooserDialogView::ShouldShowCloseButton() const {
+  return false;
+}
+
+ui::ModalType ChooserDialogView::GetModalType() const {
+  return ui::MODAL_TYPE_CHILD;
+}
+
+base::string16 ChooserDialogView::GetDialogButtonLabel(
+    ui::DialogButton button) const {
+  return chooser_content_view_->GetDialogButtonLabel(button);
+}
+
+bool ChooserDialogView::IsDialogButtonEnabled(ui::DialogButton button) const {
+  return chooser_content_view_->IsDialogButtonEnabled(button);
+}
+
+views::View* ChooserDialogView::CreateFootnoteView() {
+  return chooser_content_view_->CreateFootnoteView(this);
+}
+
+bool ChooserDialogView::Accept() {
+  if (chooser_controller_)
+    chooser_controller_->Select(table_view_->selection_model().active());
+  return true;
+}
+
+bool ChooserDialogView::Cancel() {
+  if (chooser_controller_)
+    chooser_controller_->Cancel();
+  return true;
+}
+
+bool ChooserDialogView::Close() {
+  if (chooser_controller_)
+    chooser_controller_->Close();
+  return true;
+}
+
+void ChooserDialogView::StyledLabelLinkClicked(views::StyledLabel* label,
+                                               const gfx::Range& range,
+                                               int event_flags) {
+  chooser_controller_->OpenHelpCenterUrl();
+}
+
+void ChooserDialogView::OnSelectionChanged() {
+  GetDialogClientView()->UpdateDialogButtons();
+}
+
+void ChromeExtensionChooserDialog::ShowDialogImpl(

[msw, 2016/06/08 01:16:32]

Do we need to split ShowDialog and ShowDialogImpl?
Could this just be the implementation of ShowDialog?

[juncai, 2016/06/09 01:59:53]

This is a similar pattern as:
https://cs.chromium.org/chromium/src/chrome/browser/extensions/api/chrome_dev...
which is a workaround for MacViews.

And in a follow-up CL I'll do similar thing as:
https://cs.chromium.org/chromium/src/chrome/browser/ui/cocoa/extensions/devic...

At:
https://cs.chromium.org/chromium/src/chrome/browser/ui/cocoa/extensions/choos...

I'll add:
if (chrome::ToolkitViewsWebUIDialogsEnabled())
    return ChromeExtensionChooserDialog::ShowDialogImpl();

[msw, 2016/06/09 18:40:04]

Acknowledged; thanks for the explanation.

+    ChooserController* chooser_controller) const {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  DCHECK(chooser_controller);
+
+  web_modal::WebContentsModalDialogManager* manager =
+      web_modal::WebContentsModalDialogManager::FromWebContents(web_contents_);
+  if (manager) {
+    constrained_window::ShowWebModalDialogViews(
+        new ChooserDialogView(web_contents_, chooser_controller),
+        web_contents_);
+  }
+}