1 files changed, 70 insertions, 0 deletions
diff --git a/content/browser/download/download_item_impl_delegate.h b/content/browser/download/download_item_impl_delegate.h
new file mode 100644
index 0000000..b947af7
--- /dev/null
+++ b/content/browser/download/download_item_impl_delegate.h
@@ -0,0 +1,70 @@
+// 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 CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_IMPL_DELEGATE_H_
+#define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_IMPL_DELEGATE_H_
+
+#include "base/file_path.h"
+#include "content/common/content_export.h"
+
+class DownloadItemImpl;
+
+namespace content {
+class BrowserContext;
+}
+
+// Delegate for operations that a DownloadItemImpl can't do for itself.
+// The base implementation of this class does nothing (returning false
+// on predicates) so interfaces not of interest to a derived class may
+// be left unimplemented.
+class CONTENT_EXPORT DownloadItemImplDelegate {
+ public:
+  DownloadItemImplDelegate();
+  virtual ~DownloadItemImplDelegate();
+
+  // Used for catching use-after-free errors.
+  void Attach();
+  void Detach();
+
+  // Tests if a file type should be opened automatically.
+  virtual bool ShouldOpenFileBasedOnExtension(const FilePath& path);
+
+  // Allows the delegate to override the opening of a download. If it returns
+  // true then it's reponsible for opening the item.
+  virtual bool ShouldOpenDownload(DownloadItemImpl* download);
+
+  // Checks whether a downloaded file still exists and updates the
+  // file's state if the file is already removed.
+  // The check may or may not result in a later asynchronous call
+  // to OnDownloadedFileRemoved().
+  virtual void CheckForFileRemoval(DownloadItemImpl* download_item);
+
+  // If all pre-requisites have been met, complete download processing.
+  // TODO(rdsmith): Move into DownloadItem.
+  virtual void MaybeCompleteDownload(DownloadItemImpl* download);
+
+  // For contextual issues like language and prefs.
+  virtual content::BrowserContext* GetBrowserContext() const;
+
+  // Handle any delegate portions of a state change operation on the
+  // DownloadItem.
+  virtual void DownloadStopped(DownloadItemImpl* download);
+  virtual void DownloadCompleted(DownloadItemImpl* download);
+  virtual void DownloadOpened(DownloadItemImpl* download);
+  virtual void DownloadRemoved(DownloadItemImpl* download);
+  virtual void DownloadRenamedToIntermediateName(
+      DownloadItemImpl* download);
+  virtual void DownloadRenamedToFinalName(DownloadItemImpl* download);
+
+  // Assert consistent state for delgate object at various transitions.
+  virtual void AssertStateConsistent(DownloadItemImpl* download) const;
+
+ private:
+  // For "Outlives attached DownloadItemImpl" invariant assertion.
+  int count_;
+
+  DISALLOW_COPY_AND_ASSIGN(DownloadItemImplDelegate);
+};
+
+#endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_IMPL_DELEGATE_H_