Add picker view for Web Share Target.

chrome/browser/ui/views/webshare/webshare_target_picker_view.h

+// Copyright 2017 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.
+
+#ifndef CHROME_BROWSER_UI_VIEWS_WEBSHARE_WEBSHARE_TARGET_PICKER_VIEW_H_
+#define CHROME_BROWSER_UI_VIEWS_WEBSHARE_WEBSHARE_TARGET_PICKER_VIEW_H_
+
+#include <vector>
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/strings/string16.h"
+#include "chrome/browser/ui/browser_dialogs.h"
+#include "ui/base/models/table_model.h"
+#include "ui/base/ui_base_types.h"
+#include "ui/views/window/dialog_delegate.h"
+
+// Dialog that presents the user with a list of share target apps. Allows the
+// user to pick one target to be opened and have data passed to it.
+//
+// NOTE: This dialog has *not* been UI-reviewed, and is being used by an
+// in-development feature (Web Share) behind a runtime flag. It should not be
+// used by any released code until going through UI review.
+class WebShareTargetPickerView : public views::DialogDelegateView,
+                                 public ui::TableModel {
+ public:
+  // |targets| is a list of app titles that will be shown in a list. Calls
+  // |close_callback| with SHARE if an app was chosen, or CANCEL if the dialog
+  // was cancelled.
+  WebShareTargetPickerView(
+      const std::vector<base::string16>& targets,
+      const base::Callback<void(SharePickerResult)>& close_callback);
+  ~WebShareTargetPickerView() override;
+
+  // views::View overrides:
+  gfx::Size GetPreferredSize() const override;
+
+  // views::WidgetDelegate overrides:
+  ui::ModalType GetModalType() const override;
+  base::string16 GetWindowTitle() const override;
+
+  // views::DialogDelegate overrides:
+  bool Cancel() override;
+  bool Accept() override;
+  base::string16 GetDialogButtonLabel(ui::DialogButton button) const override;
+
+  // ui::TableModel overrides:
+  int RowCount() override;
+  base::string16 GetText(int row, int column_id) override;
+  void SetObserver(ui::TableModelObserver* observer) override;
+
+ private:
+  const std::vector<base::string16> targets_;
+
+  base::Callback<void(SharePickerResult)> close_callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebShareTargetPickerView);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_WEBSHARE_WEBSHARE_TARGET_PICKER_VIEW_H_