WebUI: Move the core files of WebUI from chrome/browser/webui to content/browser/webui.

BUG=59946
TEST=trybots

Review URL: http://codereview.chromium.org/6575054

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@76020 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 49 insertions, 0 deletions

diff --git a/content/browser/webui/web_ui_util.h b/content/browser/webui/web_ui_util.h
new file mode 100644
index 0000000..d7034dc
--- /dev/null
+++ b/content/browser/webui/web_ui_util.h
@@ -0,0 +1,49 @@
+// Copyright (c) 2011 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_WEBUI_WEB_UI_UTIL_H_
+#define CONTENT_BROWSER_WEBUI_WEB_UI_UTIL_H_
+#pragma once
+
+#include <string>
+
+class ListValue;
+class SkBitmap;
+
+namespace web_ui_util {
+
+// Convenience routine to get the response string from an argument
+// list.  Typically used when supporting a WebUI and getting calls
+// from the hosted code.  Content must be a ListValue with at least
+// one entry in it, and that first entry must be a string, which is
+// returned.  The parameter is a Value for convenience.  Returns an
+// empty string on error or if the parameter is not a ListValue.
+std::string GetJsonResponseFromFirstArgumentInList(const ListValue* args);
+
+// Convenience routine to get one of the response strings from an
+// argument list.  content must be a ListValue, with at least
+// (list_index+1) entries in it.  list_index is the 0-based index of
+// the entry to pull from that list, and that entry must be a string,
+// which is returned.  The parameter is a Value for convenience.
+// Returns an empty string on error or if the parameter is not a
+// ListValue.
+std::string GetJsonResponseFromArgumentList(const ListValue* args,
+                                            size_t list_index);
+
+
+// Convenience routine to convert SkBitmap object to data url
+// so that it can be used in WebUI.
+std::string GetImageDataUrl(const SkBitmap& bitmap);
+
+// Convenience routine to get data url that corresponds to given
+// resource_id as an image. This function does not check if the
+// resource for the |resource_id| is an image, therefore it is the
+// caller's responsibility to make sure the resource is indeed an
+// image. Returns empty string if a resource does not exist for given
+// |resource_id|.
+std::string GetImageDataUrlFromResource(int resource_id);
+
+}  // namespace web_ui_util
+
+#endif  // CONTENT_BROWSER_WEBUI_WEB_UI_UTIL_H_