Refactor download shelf and prepare for porting.

Side effect of removing some views dependencies from places they don't belong.

Review URL: http://codereview.chromium.org/28252

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@10657 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 51 insertions, 0 deletions

diff --git a/chrome/browser/download/download_shelf.h b/chrome/browser/download/download_shelf.h
new file mode 100644
index 0000000..d3b83a1
--- /dev/null
+++ b/chrome/browser/download/download_shelf.h
@@ -0,0 +1,51 @@
+// Copyright (c) 2009 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_DOWNLOAD_DOWNLOAD_SHELF_H_
+#define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_SHELF_H_
+
+#include "base/basictypes.h"
+
+class BaseDownloadItemModel;
+class TabContents;
+
+// DownloadShelf is an interface for platform-specific download shelves to
+// implement. It also contains some shared logic. This class should not be
+// instantiated directly, but rather created via a call to Create().
+class DownloadShelf {
+ public:
+  explicit DownloadShelf(TabContents* tab_contents)
+      : tab_contents_(tab_contents) { }
+
+  virtual ~DownloadShelf() { }
+
+  // Creates a platform-specific DownloadShelf, passing ownership to the caller.
+  static DownloadShelf* Create(TabContents* tab_contents);
+
+  // A new download has started, so add it to our shelf. This object will
+  // take ownership of |download_model|.
+  virtual void AddDownload(BaseDownloadItemModel* download_model) = 0;
+
+  // Invoked when the user clicks the 'show all downloads' link button.
+  void ShowAllDownloads();
+
+  // Invoked when the download shelf is migrated from one tab contents to a new
+  // one.
+  void ChangeTabContents(TabContents* old_contents, TabContents* new_contents);
+
+  // The browser view needs to know when we are going away to properly return
+  // the resize corner size to WebKit so that we don't draw on top of it.
+  // This returns the showing state of our animation which is set to false at
+  // the beginning Show and true at the beginning of a Hide.
+  virtual bool IsShowing() const = 0;
+
+ protected:
+  TabContents* tab_contents_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(DownloadShelf);
+};
+
+#endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_SHELF_H_
+