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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome/renderer/web_ui_bindings.h" | |
| 6 | |
| 7 #include "base/json/json_writer.h" | |
| 8 #include "base/scoped_ptr.h" | |
| 9 #include "base/stl_util-inl.h" | |
| 10 #include "base/values.h" | |
| 11 #include "chrome/common/render_messages.h" | |
| 12 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h" | |
| 13 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURL.h" | |
| 14 | |
| 15 namespace { | |
| 16 | |
| 17 // Creates a Value which is a copy of the CppVariant |value|. All objects are | |
| 18 // treated as Lists for now since CppVariant does not distinguish arrays in any | |
| 19 // convenient way and we currently have no need of non array objects. | |
| 20 Value* CreateValueFromCppVariant(const CppVariant& value) { | |
| 21 if (value.isBool()) | |
| 22 return Value::CreateBooleanValue(value.ToBoolean()); | |
| 23 if (value.isDouble()) | |
| 24 return Value::CreateDoubleValue(value.ToDouble()); | |
| 25 if (value.isInt32()) | |
| 26 return Value::CreateIntegerValue(value.ToInt32()); | |
| 27 if (value.isString()) | |
| 28 return Value::CreateStringValue(value.ToString()); | |
| 29 | |
| 30 if (value.isObject()) { | |
| 31 // We currently assume all objects are arrays. | |
| 32 std::vector<CppVariant> vector = value.ToVector(); | |
| 33 ListValue* list = new ListValue(); | |
| 34 for (size_t i = 0; i < vector.size(); ++i) { | |
| 35 list->Append(CreateValueFromCppVariant(vector[i])); | |
| 36 } | |
| 37 return list; | |
| 38 } | |
| 39 | |
| 40 // Covers null and undefined. | |
| 41 return Value::CreateNullValue(); | |
| 42 } | |
| 43 | |
| 44 } // namespace | |
| 45 | |
| 46 DOMBoundBrowserObject::DOMBoundBrowserObject() | |
| 47 : sender_(NULL), | |
| 48 routing_id_(0) { | |
| 49 } | |
| 50 | |
| 51 DOMBoundBrowserObject::~DOMBoundBrowserObject() { | |
| 52 STLDeleteContainerPointers(properties_.begin(), properties_.end()); | |
| 53 } | |
| 54 | |
| 55 WebUIBindings::WebUIBindings() { | |
| 56 BindMethod("send", &WebUIBindings::send); | |
| 57 } | |
| 58 | |
| 59 WebUIBindings::~WebUIBindings() {} | |
| 60 | |
| 61 void WebUIBindings::send(const CppArgumentList& args, CppVariant* result) { | |
| 62 // We expect at least a string message identifier, and optionally take | |
| 63 // an object parameter. If we get anything else we bail. | |
| 64 if (args.size() < 1 || args.size() > 2) | |
| 65 return; | |
| 66 | |
| 67 // Require the first parameter to be the message name. | |
| 68 if (!args[0].isString()) | |
| 69 return; | |
| 70 const std::string message = args[0].ToString(); | |
| 71 | |
| 72 // If they've provided an optional message parameter, convert that into JSON. | |
| 73 std::string content; | |
| 74 if (args.size() == 2) { | |
| 75 if (!args[1].isObject()) | |
| 76 return; | |
| 77 | |
| 78 scoped_ptr<Value> value(CreateValueFromCppVariant(args[1])); | |
| 79 base::JSONWriter::Write(value.get(), /* pretty_print= */ false, &content); | |
| 80 } | |
| 81 | |
| 82 // Retrieve the source frame's url | |
| 83 GURL source_url; | |
| 84 WebKit::WebFrame* webframe = WebKit::WebFrame::frameForCurrentContext(); | |
| 85 if (webframe) | |
| 86 source_url = webframe->url(); | |
| 87 | |
| 88 // Send the message up to the browser. | |
| 89 sender()->Send( | |
| 90 new ViewHostMsg_WebUISend(routing_id(), source_url, message, content)); | |
| 91 } | |
| 92 | |
| 93 void DOMBoundBrowserObject::SetProperty(const std::string& name, | |
| 94 const std::string& value) { | |
| 95 CppVariant* cpp_value = new CppVariant; | |
| 96 cpp_value->Set(value); | |
| 97 BindProperty(name, cpp_value); | |
| 98 properties_.push_back(cpp_value); | |
| 99 } | |
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