Input file type now supported in extension popups.

To do this, this CL generalize the TabContentsFileSelectHelper (renamed FileSelectHelper) so it is associated with a RenderViewHost rather than a TabContents.
This allows the extension popups which don't use a TabContents to use it.

As part of that, I also moved GetTopLevelNativeWindow() from TabContentsView to TabContent, as it can be implemented in a non-platform specific way.

BUG=28829
TEST=Make sure you can still open file on web pages (such as http://www.cs.tut.fi/~jkorpela/forms/file.html.
     Create an extension with a popup that contains an input file tag. Make sure it does open a file dialog and lets you choose a file.

Review URL: http://codereview.chromium.org/3209002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@59105 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 85 insertions, 0 deletions

diff --git a/chrome/browser/file_select_helper.h b/chrome/browser/file_select_helper.h
new file mode 100644
index 0000000..ba8441b
--- /dev/null
+++ b/chrome/browser/file_select_helper.h
@@ -0,0 +1,85 @@
+// Copyright (c) 2010 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_FILE_SELECT_HELPER_H_
+#define CHROME_BROWSER_FILE_SELECT_HELPER_H_
+#pragma once
+
+#include <vector>
+
+#include "chrome/browser/shell_dialogs.h"
+#include "chrome/browser/renderer_host/render_view_host_delegate.h"
+#include "chrome/common/notification_observer.h"
+#include "chrome/common/notification_registrar.h"
+#include "net/base/directory_lister.h"
+
+class Profile;
+class RenderViewHost;
+struct ViewHostMsg_RunFileChooser_Params;
+
+class FileSelectHelper
+    : public SelectFileDialog::Listener,
+      public net::DirectoryLister::DirectoryListerDelegate,
+      public RenderViewHostDelegate::FileSelect,
+      public NotificationObserver {
+ public:
+  explicit FileSelectHelper(Profile* profile);
+  ~FileSelectHelper();
+
+  // SelectFileDialog::Listener
+  virtual void FileSelected(const FilePath& path, int index, void* params);
+  virtual void MultiFilesSelected(const std::vector<FilePath>& files,
+                                  void* params);
+  virtual void FileSelectionCanceled(void* params);
+
+  // net::DirectoryLister::DirectoryListerDelegate
+  virtual void OnListFile(
+      const net::DirectoryLister::DirectoryListerData& data);
+  virtual void OnListDone(int error);
+
+  // RenderViewHostDelegate::FileSelect
+  virtual void RunFileChooser(RenderViewHost* render_view_host,
+                              const ViewHostMsg_RunFileChooser_Params& params);
+
+ private:
+  // NotificationObserver implementation.
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
+  // Helper method for handling the SelectFileDialog::Listener callbacks.
+  void DirectorySelected(const FilePath& path);
+
+  // Helper method to get allowed extensions for select file dialog from
+  // the specified accept types as defined in the spec:
+  //   http://whatwg.org/html/number-state.html#attr-input-accept
+  SelectFileDialog::FileTypeInfo* GetFileTypesFromAcceptType(
+      const string16& accept_types);
+
+  // Profile used to set/retrieve the last used directory.
+  Profile* profile_;
+
+  // The RenderViewHost for the page we are associated with.
+  RenderViewHost* render_view_host_;
+
+  // Dialog box used for choosing files to upload from file form fields.
+  scoped_refptr<SelectFileDialog> select_file_dialog_;
+
+  // The type of file dialog last shown.
+  SelectFileDialog::Type dialog_type_;
+
+  // The current directory lister (runs on a separate thread).
+  scoped_refptr<net::DirectoryLister> directory_lister_;
+
+  // The current directory lister results, which may update incrementally
+  // as the listing proceeds.
+  std::vector<FilePath> directory_lister_results_;
+
+  // Registrar for notifications regarding our RenderViewHost.
+  NotificationRegistrar notification_registrar_;
+
+  DISALLOW_COPY_AND_ASSIGN(FileSelectHelper);
+};
+
+#endif  // CHROME_BROWSER_FILE_SELECT_HELPER_H_