Initial checkin of the HTML downloads UI. It's not yet complete (lacking...

chrome/browser/dom_ui/downloads_ui.h

+// Copyright (c) 2006-2008 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_DOM_UI_DOWNLOADS_UI_H_
+#define CHROME_BROWSER_DOM_UI_DOWNLOADS_UI_H_
+
+#include "chrome/browser/dom_ui/chrome_url_data_manager.h"
+#include "chrome/browser/dom_ui/dom_ui.h"
+#include "chrome/browser/dom_ui/dom_ui_contents.h"
+#include "chrome/browser/download/download_manager.h"
+
+class GURL;
+
+class DownloadsUIHTMLSource : public ChromeURLDataManager::DataSource {
+ public:
+  DownloadsUIHTMLSource();
+
+  // Called when the network layer has requested a resource underneath
+  // the path we registered.
+  virtual void StartDataRequest(const std::string& path, int request_id);
+  virtual std::string GetMimeType(const std::string&) const {
+    return "text/html";
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(DownloadsUIHTMLSource);
+};
+
+// The handler for Javascript messages related to the "downloads" view,
+// also observes changes to the download manager.
+class DownloadsDOMHandler : public DOMMessageHandler,
+                            public DownloadManager::Observer,
+                            public DownloadItem::Observer {
+ public:
+  explicit DownloadsDOMHandler(DOMUI* dom_ui, DownloadManager* dlm);
+  virtual ~DownloadsDOMHandler();
+
+  void Init();
+
+  // DownloadItem::Observer interface
+  virtual void OnDownloadUpdated(DownloadItem* download);
+
+  // DownloadManager::Observer interface
+  virtual void ModelChanged();
+  virtual void SetDownloads(std::vector<DownloadItem*>& downloads);
+
+  // Callback for the "getDownloads" message.
+  void HandleGetDownloads(const Value* value);
+
+  // Callback for the "openFile" message - opens the file in the shell.
+  void HandleOpenFile(const Value* value);
+
+  // Callback for the "drag" message - initiates a file object drag.
+  void HandleDrag(const Value* value);
+
+  // Callback for the "saveDangerous" message - specifies that the user
+  // wishes to save a dangerous file.
+  void HandleSaveDangerous(const Value* value);
+
+  // Callback for the "discardDangerous" message - specifies that the user
+  // wishes to discard (remove) a dangerous file.
+  void HandleDiscardDangerous(const Value* value);
+
+  // Callback for the "show" message - shows the file in explorer.
+  void HandleShow(const Value* value);
+
+  // Callback for the "pause" message - pauses the file download.
+  void HandlePause(const Value* value);
+
+  // Callback for the "cancel" message - cancels the download.
+  void HandleCancel(const Value* value);
+
+ private:
+  // Send the current list of downloads to the page.
+  void SendCurrentDownloads();
+
+  // Creates a representation of a download in a format that the downloads
+  // HTML page can understand.
+  DictionaryValue* CreateDownloadItemValue(DownloadItem* download, int id);
+
+  // Clear all download items and their observers.
+  void ClearDownloadItems();
+
+  // Return the download that corresponds to a given id.
+  DownloadItem* GetDownloadById(int id);
+
+  // Current search text.
+  std::wstring search_text_;
+
+  // Our model
+  DownloadManager* download_manager_;
+
+  // The current set of visible DownloadItems for this view received from the
+  // DownloadManager. DownloadManager owns the DownloadItems. The vector is
+  // kept in order, sorted by ascending start time.
+  typedef std::vector<DownloadItem*> OrderedDownloads;
+  OrderedDownloads download_items_;
+
+  DISALLOW_COPY_AND_ASSIGN(DownloadsDOMHandler);
+};
+
+class DownloadsUI : public DOMUI {
+ public:
+  explicit DownloadsUI(DOMUIContents* contents);
+
+  // Return the URL for the front page of this UI.
+  static GURL GetBaseURL();
+
+  // DOMUI Implementation
+  virtual void Init();
+
+ private:
+  DOMUIContents* contents_;
+
+  DISALLOW_COPY_AND_ASSIGN(DownloadsUI);
+};
+
+#endif  // CHROME_BROWSER_DOM_UI_DOWNLOADS_UI_H_
+