Upstream Chrome on iOS source code [6/11].

ios/chrome/browser/ui/omnibox/page_info_view_controller.h

+// 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.
+
+#ifndef IOS_CHROME_BROWSER_UI_OMNIBOX_PAGE_INFO_VIEW_CONTROLLER_H_
+#define IOS_CHROME_BROWSER_UI_OMNIBOX_PAGE_INFO_VIEW_CONTROLLER_H_
+
+#import <UIKit/UIKit.h>
+
+#include <memory>
+
+#include "base/mac/scoped_nsobject.h"
+#include "base/memory/weak_ptr.h"
+#include "ios/chrome/browser/ui/omnibox/page_info_model_observer.h"
+#import "ios/chrome/browser/ui/popup_menu/popup_menu_controller.h"
+
+@class BidiContainerView;
+class PageInfoModel;
+
+// TODO(crbug.com/227827) Merge 178763: PageInfoModel has been removed in
+// upstream; check if we should use PageInfoModel.
+// The view controller for the page info view.
+@interface PageInfoViewController : NSObject
+// Designated initializer.
+// The |source| parameter should be in the coordinate system of the parent.
+// Typically this would be the frame of a button that resulted in this popup
+// being displayed.
+- (id)initWithModel:(PageInfoModel*)model
+             bridge:(PageInfoModelObserver*)bridge
+        sourceFrame:(CGRect)source
+         parentView:(UIView*)parent;
+
+// Dismisses the view.
+- (void)dismiss;
+
+// Layout the page info view.
+- (void)performLayout;
+
+@end
+
+// Bridge that listens for change notifications from the model.
+class PageInfoModelBubbleBridge : public PageInfoModelObserver {
+ public:
+  PageInfoModelBubbleBridge();
+  ~PageInfoModelBubbleBridge() override;
+
+  // PageInfoModelObserver implementation.
+  void OnPageInfoModelChanged() override;
+
+  // Sets the controller.
+  void set_controller(PageInfoViewController* controller) {
+    controller_ = controller;
+  }
+
+ private:
+  void PerformLayout() {
+    // If the window is animating closed when this is called, the
+    // animation could be holding the last reference to |controller_|
+    // (and thus |this|).  Pin it until the task is completed.
+    base::scoped_nsobject<PageInfoViewController> keep_alive(
+        [controller_ retain]);
+    [controller_ performLayout];
+  }
+
+  PageInfoViewController* controller_;  // weak
+
+  base::WeakPtrFactory<PageInfoModelBubbleBridge> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(PageInfoModelBubbleBridge);
+};
+
+#endif  // IOS_CHROME_BROWSER_UI_OMNIBOX_PAGE_INFO_VIEW_CONTROLLER_H_