[Multipaste] Create file item view - part 2

This CL implements the menu item presenting the copied file, called
`ClipboardHistoryFileItemView`. This new menu item is applied to the
clipboard history data whose display format is `kFile`.

Bug: 1134392
Change-Id: I48ad2b8e88ae8a6a5fa56b4c1f31af1e5a5ebea8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2552082
Commit-Queue: Andrew Xu <andrewxu@chromium.org>
Reviewed-by: David Black <dmblack@google.com>
Cr-Commit-Position: refs/heads/master@{#829878}

ash/BUILD.gn

@@ -323,6 +323,8 @@ component("ash") {
     "clipboard/scoped_clipboard_history_pause_impl.h",
     "clipboard/views/clipboard_history_bitmap_item_view.cc",
     "clipboard/views/clipboard_history_bitmap_item_view.h",
+    "clipboard/views/clipboard_history_file_item_view.cc",
+    "clipboard/views/clipboard_history_file_item_view.h",
     "clipboard/views/clipboard_history_item_view.cc",
     "clipboard/views/clipboard_history_item_view.h",
     "clipboard/views/clipboard_history_label.cc",

ash/clipboard/views/clipboard_history_file_item_view.cc

+// Copyright 2020 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 "ash/clipboard/views/clipboard_history_file_item_view.h"
+
+#include "ash/public/cpp/file_icon_util.h"
+#include "base/files/file_path.h"
+#include "ui/views/controls/image_view.h"
+#include "ui/views/view_class_properties.h"
+
+namespace {
+
+// The file icon's preferred size.
+constexpr gfx::Size kIconSize(20, 20);
+
+// The file icon's margin.
+constexpr gfx::Insets kIconMargin(/*top=*/0,
+                                  /*left=*/0,
+                                  /*bottom=*/0,
+                                  /*right=*/12);
+}  // namespace
+
+namespace ash {
+
+ClipboardHistoryFileItemView::ClipboardHistoryFileItemView(
+    const ClipboardHistoryItem* clipboard_history_item,
+    views::MenuItemView* container)
+    : ClipboardHistoryTextItemView(clipboard_history_item, container) {}
+ClipboardHistoryFileItemView::~ClipboardHistoryFileItemView() = default;
+
+std::unique_ptr<ClipboardHistoryFileItemView::ContentsView>
+ClipboardHistoryFileItemView::CreateContentsView() {
+  auto file_icon = std::make_unique<views::ImageView>();
+  const std::string copied_file_name = base::UTF16ToUTF8(text());
+  file_icon->SetImage(GetIconForPath(base::FilePath(copied_file_name)));
+  file_icon->SetImageSize(kIconSize);
+  file_icon->SetProperty(views::kMarginsKey, kIconMargin);
+  auto contents_view = ClipboardHistoryTextItemView::CreateContentsView();
+
+  // `file_icon` should be `contents_view`'s first child.
+  contents_view->AddChildViewAt(std::move(file_icon), /*index=*/0);
+
+  return contents_view;
+}
+
+const char* ClipboardHistoryFileItemView::GetClassName() const {
+  return "ClipboardHistoryFileItemView";
+}
+
+}  // namespace ash

ash/clipboard/views/clipboard_history_file_item_view.h

+// Copyright 2020 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 ASH_CLIPBOARD_VIEWS_CLIPBOARD_HISTORY_FILE_ITEM_VIEW_H_
+#define ASH_CLIPBOARD_VIEWS_CLIPBOARD_HISTORY_FILE_ITEM_VIEW_H_
+
+#include "ash/clipboard/views/clipboard_history_text_item_view.h"
+
+namespace views {
+class MenuItemView;
+}
+
+namespace ash {
+
+// The menu item showing the copied file.
+class ClipboardHistoryFileItemView : public ClipboardHistoryTextItemView {
+ public:
+  ClipboardHistoryFileItemView(
+      const ClipboardHistoryItem* clipboard_history_item,
+      views::MenuItemView* container);
+  ClipboardHistoryFileItemView(const ClipboardHistoryFileItemView& rhs) =
+      delete;
+  ClipboardHistoryFileItemView& operator=(
+      const ClipboardHistoryFileItemView& rhs) = delete;
+  ~ClipboardHistoryFileItemView() override;
+
+ private:
+  // ClipboardHistoryTextItemView:
+  std::unique_ptr<ContentsView> CreateContentsView() override;
+  const char* GetClassName() const override;
+};
+
+}  // namespace ash
+
+#endif  // ASH_CLIPBOARD_VIEWS_CLIPBOARD_HISTORY_FILE_ITEM_VIEW_H_

ash/clipboard/views/clipboard_history_item_view.cc

@@ -8,6 +8,7 @@
 #include "ash/clipboard/clipboard_history_resource_manager.h"
 #include "ash/clipboard/clipboard_history_util.h"
 #include "ash/clipboard/views/clipboard_history_bitmap_item_view.h"
+#include "ash/clipboard/views/clipboard_history_file_item_view.h"
 #include "ash/clipboard/views/clipboard_history_text_item_view.h"
 #include "ash/resources/vector_icons/vector_icons.h"
 #include "ash/style/ash_color_provider.h"
@@ -188,7 +189,7 @@ ClipboardHistoryItemView::CreateFromClipboardHistoryItem(
       return std::make_unique<ClipboardHistoryBitmapItemView>(
           &item, resource_manager, container);
     case ClipboardHistoryUtil::ClipboardHistoryDisplayFormat::kFile:
-      return std::make_unique<ClipboardHistoryTextItemView>(&item, container);
+      return std::make_unique<ClipboardHistoryFileItemView>(&item, container);
   }
 }
 

ash/clipboard/views/clipboard_history_text_item_view.h

@@ -25,11 +25,16 @@ class ClipboardHistoryTextItemView : public ClipboardHistoryItemView {
       delete;
   ~ClipboardHistoryTextItemView() override;
 
+ protected:
+  const base::string16& text() const { return text_; }
+
+  // ClipboardHistoryItemView:
+  std::unique_ptr<ContentsView> CreateContentsView() override;
+
  private:
   class TextContentsView;
 
   // ClipboardHistoryItemView:
-  std::unique_ptr<ContentsView> CreateContentsView() override;
   base::string16 GetAccessibleName() const override;
   const char* GetClassName() const override;