Add a path for a web page to request the enumeration of a directory. This, t...

chrome/renderer/render_view.cc

Index: chrome/renderer/render_view.cc
===================================================================
--- chrome/renderer/render_view.cc	(revision 76768)
+++ chrome/renderer/render_view.cc	(working copy)
@@ -540,6 +540,7 @@
       : params(p),
         completion(c) {
   }
+
   ViewHostMsg_RunFileChooser_Params params;
   WebFileChooserCompletion* completion;  // MAY BE NULL to skip callback.
 };
@@ -591,6 +592,7 @@
       spellcheck_provider_(NULL),
       accessibility_ack_pending_(false),
       p2p_socket_dispatcher_(NULL),
+      enumeration_completion_id_(0),
       pending_app_icon_requests_(0),
       session_storage_namespace_id_(session_storage_namespace_id) {
 #if defined(OS_MACOSX)
@@ -690,7 +692,8 @@
   if (decrement_shared_popup_at_destruction_)
     shared_popup_counter_->data--;
 
-  // If file chooser is still waiting for answer, dispatch empty answer.
+  // If file chooser or directory enumeration
+  // is still waiting for answer, dispatch empty answer.
   while (!file_chooser_completions_.empty()) {
     if (file_chooser_completions_.front()->completion) {
       file_chooser_completions_.front()->completion->didChooseFile(
@@ -699,6 +702,14 @@
     file_chooser_completions_.pop_front();
   }
 
+  while (!enumeration_completions_.empty()) {
+    if (enumeration_completions_.begin()->second) {
+      enumeration_completions_.begin()->second->didChooseFile(
+          WebVector<WebString>());
+    }
+    enumeration_completions_.erase(enumeration_completions_.begin());
+  }
+
 #if defined(OS_MACOSX)
   // Tell the spellchecker that the document is closed.
   if (has_document_tag_)
@@ -1060,6 +1071,8 @@
     IPC_MESSAGE_HANDLER(ViewMsg_DisplayPrerenderedPage,
                         OnDisplayPrerenderedPage)
     IPC_MESSAGE_HANDLER(ViewMsg_RunFileChooserResponse, OnFileChooserResponse)
+    IPC_MESSAGE_HANDLER(ViewMsg_EnumerateDirectoryResponse,
+                        OnEnumerateDirectoryResponse)
     IPC_MESSAGE_HANDLER(ViewMsg_EnableViewSourceMode, OnEnableViewSourceMode)
     IPC_MESSAGE_HANDLER(ViewMsg_GetAllSavableResourceLinksForCurrentPage,
                         OnGetAllSavableResourceLinksForCurrentPage)
@@ -2368,6 +2381,17 @@
                                                              word));
 }
 
+bool RenderView::enumerateDirectory(
+    const WebString& path,
+    WebFileChooserCompletion* chooser_completion) {
+  int id = enumeration_completion_id_++;
+  enumeration_completions_[id] = chooser_completion;
+  return Send(new ViewHostMsg_EnumerateDirectory(
+      routing_id_,
+      id,
+      webkit_glue::WebStringToFilePath(path)));
+}
+
 void RenderView::continuousSpellCheckingEnabledStateChanged() {
   UpdateToggleSpellCheckCommandState();
 }
@@ -4737,6 +4761,20 @@
   }
 }
 
+void RenderView::OnEnumerateDirectoryResponse(
+    int id,
+    const std::vector<FilePath>& paths) {
+  if (!enumeration_completions_[id])
+    return;
+
+  WebVector<WebString> ws_file_names(paths.size());
+  for (size_t i = 0; i < paths.size(); ++i)
+    ws_file_names[i] = webkit_glue::FilePathToWebString(paths[i]);
+
+  enumeration_completions_[id]->didChooseFile(ws_file_names);
+  enumeration_completions_.erase(id);
+}
+
 void RenderView::OnFileChooserResponse(const std::vector<FilePath>& paths) {
   // This could happen if we navigated to a different page before the user
   // closed the chooser.