Remove old downloads UI; Material Design version is now the default.

chrome/browser/ui/webui/downloads_dom_handler.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 CHROME_BROWSER_UI_WEBUI_DOWNLOADS_DOM_HANDLER_H_
-#define CHROME_BROWSER_UI_WEBUI_DOWNLOADS_DOM_HANDLER_H_
-
-#include <stdint.h>
-
-#include <set>
-#include <vector>
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "chrome/browser/download/all_download_item_notifier.h"
-#include "chrome/browser/download/download_danger_prompt.h"
-#include "content/public/browser/download_item.h"
-#include "content/public/browser/download_manager.h"
-#include "content/public/browser/web_ui_message_handler.h"
-
-namespace base {
-class ListValue;
-}
-
-namespace content {
-class WebContents;
-}
-
-// The handler for Javascript messages related to the "downloads" view,
-// also observes changes to the download manager.
-class DownloadsDOMHandler : public content::WebUIMessageHandler,
-                            public AllDownloadItemNotifier::Observer {
- public:
-  explicit DownloadsDOMHandler(content::DownloadManager* download_manager);
-  ~DownloadsDOMHandler() override;
-
-  void Init();
-
-  // WebUIMessageHandler implementation.
-  void RegisterMessages() override;
-
-  // AllDownloadItemNotifier::Observer interface
-  void OnDownloadCreated(content::DownloadManager* manager,
-                         content::DownloadItem* download_item) override;
-  void OnDownloadUpdated(content::DownloadManager* manager,
-                         content::DownloadItem* download_item) override;
-  void OnDownloadRemoved(content::DownloadManager* manager,
-                         content::DownloadItem* download_item) override;
-
-  // Callback for the "getDownloads" message.
-  void HandleGetDownloads(const base::ListValue* args);
-
-  // Callback for the "openFile" message - opens the file in the shell.
-  void HandleOpenFile(const base::ListValue* args);
-
-  // Callback for the "drag" message - initiates a file object drag.
-  void HandleDrag(const base::ListValue* args);
-
-  // Callback for the "saveDangerous" message - specifies that the user
-  // wishes to save a dangerous file.
-  void HandleSaveDangerous(const base::ListValue* args);
-
-  // Callback for the "discardDangerous" message - specifies that the user
-  // wishes to discard (remove) a dangerous file.
-  void HandleDiscardDangerous(const base::ListValue* args);
-
-  // Callback for the "show" message - shows the file in explorer.
-  void HandleShow(const base::ListValue* args);
-
-  // Callback for the "pause" message - pauses the file download.
-  void HandlePause(const base::ListValue* args);
-
-  // Callback for the "resume" message - resumes the file download.
-  void HandleResume(const base::ListValue* args);
-
-  // Callback for the "remove" message - removes the file download from shelf
-  // and list.
-  void HandleRemove(const base::ListValue* args);
-
-  // Callback for the "undo" message. Currently only undoes removals.
-  void HandleUndo(const base::ListValue* args);
-
-  // Callback for the "cancel" message - cancels the download.
-  void HandleCancel(const base::ListValue* args);
-
-  // Callback for the "clearAll" message - clears all the downloads.
-  void HandleClearAll(const base::ListValue* args);
-
-  // Callback for the "openDownloadsFolder" message - opens the downloads
-  // folder.
-  void HandleOpenDownloadsFolder(const base::ListValue* args);
-
- protected:
-  // These methods are for mocking so that most of this class does not actually
-  // depend on WebUI. The other methods that depend on WebUI are
-  // RegisterMessages() and HandleDrag().
-  virtual content::WebContents* GetWebUIWebContents();
-  virtual void CallUpdateAll(const base::ListValue& list);
-  virtual void CallUpdateItem(const base::DictionaryValue& item);
-
-  // Schedules a call to SendCurrentDownloads() in the next message loop
-  // iteration. Protected rather than private for use in tests.
-  void ScheduleSendCurrentDownloads();
-
-  // Actually remove downloads with an ID in |removals_|. This cannot be undone.
-  void FinalizeRemovals();
-
- private:
-  // Shorthand for |observing_items_|, which tracks all items that this is
-  // observing so that RemoveObserver will be called for all of them.
-  typedef std::set<content::DownloadItem*> DownloadSet;
-
-  // Convenience method to call |main_notifier_->GetManager()| while
-  // null-checking |main_notifier_|.
-  content::DownloadManager* GetMainNotifierManager() const;
-
-  // Convenience method to call |original_notifier_->GetManager()| while
-  // null-checking |original_notifier_|.
-  content::DownloadManager* GetOriginalNotifierManager() const;
-
-  // Sends the current list of downloads to the page.
-  void SendCurrentDownloads();
-
-  // Displays a native prompt asking the user for confirmation after accepting
-  // the dangerous download specified by |dangerous|. The function returns
-  // immediately, and will invoke DangerPromptAccepted() asynchronously if the
-  // user accepts the dangerous download. The native prompt will observe
-  // |dangerous| until either the dialog is dismissed or |dangerous| is no
-  // longer an in-progress dangerous download.
-  void ShowDangerPrompt(content::DownloadItem* dangerous);
-
-  // Conveys danger acceptance from the DownloadDangerPrompt to the
-  // DownloadItem.
-  void DangerPromptDone(int download_id, DownloadDangerPrompt::Action action);
-
-  // Returns true if the records of any downloaded items are allowed (and able)
-  // to be deleted.
-  bool IsDeletingHistoryAllowed();
-
-  // Returns the download that is referred to in a given value.
-  content::DownloadItem* GetDownloadByValue(const base::ListValue* args);
-
-  // Returns the download with |id| or NULL if it doesn't exist.
-  content::DownloadItem* GetDownloadById(uint32_t id);
-
-  // Remove all downloads in |to_remove| with the ability to undo removal later.
-  void RemoveDownloads(const std::vector<content::DownloadItem*>& to_remove);
-
-  // Weak reference to the DownloadManager this class was constructed with. You
-  // should probably be using use Get{Main,Original}NotifierManager() instead.
-  content::DownloadManager* download_manager_;
-
-  // Current search terms.
-  scoped_ptr<base::ListValue> search_terms_;
-
-  // Notifies OnDownload*() and provides safe access to the DownloadManager.
-  scoped_ptr<AllDownloadItemNotifier> main_notifier_;
-
-  // If |main_notifier_| observes an incognito profile, then this observes the
-  // DownloadManager for the original profile; otherwise, this is NULL.
-  scoped_ptr<AllDownloadItemNotifier> original_notifier_;
-
-  // IDs of downloads to remove when this handler gets deleted.
-  std::vector<std::set<uint32_t>> removals_;
-
-  // Whether a call to SendCurrentDownloads() is currently scheduled.
-  bool update_scheduled_;
-
-  // IDs of new downloads that the page doesn't know about yet.
-  std::set<uint32_t> new_downloads_;
-
-  base::WeakPtrFactory<DownloadsDOMHandler> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(DownloadsDOMHandler);
-};
-
-#endif  // CHROME_BROWSER_UI_WEBUI_DOWNLOADS_DOM_HANDLER_H_