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/browser/ui/webui/html_dialog_ui.h"
6
7 #include "base/callback.h"
8 #include "base/lazy_instance.h"
9 #include "base/values.h"
10 #include "content/browser/renderer_host/render_view_host.h"
11 #include "content/browser/tab_contents/tab_contents.h"
12 #include "content/common/bindings_policy.h"
13
14 static base::LazyInstance<PropertyAccessor<HtmlDialogUIDelegate*> >
15 g_html_dialog_ui_property_accessor(base::LINKER_INITIALIZED);
16
HtmlDialogUI(TabContents * tab_contents)17 HtmlDialogUI::HtmlDialogUI(TabContents* tab_contents) : WebUI(tab_contents) {
18 }
19
~HtmlDialogUI()20 HtmlDialogUI::~HtmlDialogUI() {
21 // Don't unregister our property. During the teardown of the TabContents,
22 // this will be deleted, but the TabContents will already be destroyed.
23 //
24 // This object is owned indirectly by the TabContents. WebUIs can change, so
25 // it's scary if this WebUI is changed out and replaced with something else,
26 // since the property will still point to the old delegate. But the delegate
27 // is itself the owner of the TabContents for a dialog so will be in scope,
28 // and the HTML dialogs won't swap WebUIs anyway since they don't navigate.
29 }
30
31 // static
GetPropertyAccessor()32 PropertyAccessor<HtmlDialogUIDelegate*>& HtmlDialogUI::GetPropertyAccessor() {
33 return g_html_dialog_ui_property_accessor.Get();
34 }
35
36 ////////////////////////////////////////////////////////////////////////////////
37 // Private:
38
RenderViewCreated(RenderViewHost * render_view_host)39 void HtmlDialogUI::RenderViewCreated(RenderViewHost* render_view_host) {
40 // Hook up the javascript function calls, also known as chrome.send("foo")
41 // calls in the HTML, to the actual C++ functions.
42 RegisterMessageCallback("DialogClose",
43 NewCallback(this, &HtmlDialogUI::OnDialogClosed));
44
45 // Pass the arguments to the renderer supplied by the delegate.
46 std::string dialog_args;
47 std::vector<WebUIMessageHandler*> handlers;
48 HtmlDialogUIDelegate** delegate = GetPropertyAccessor().GetProperty(
49 tab_contents()->property_bag());
50 if (delegate) {
51 dialog_args = (*delegate)->GetDialogArgs();
52 (*delegate)->GetWebUIMessageHandlers(&handlers);
53 }
54
55 if (0 != (bindings_ & BindingsPolicy::WEB_UI))
56 render_view_host->SetWebUIProperty("dialogArguments", dialog_args);
57 for (std::vector<WebUIMessageHandler*>::iterator it = handlers.begin();
58 it != handlers.end(); ++it) {
59 (*it)->Attach(this);
60 AddMessageHandler(*it);
61 }
62 }
63
OnDialogClosed(const ListValue * args)64 void HtmlDialogUI::OnDialogClosed(const ListValue* args) {
65 HtmlDialogUIDelegate** delegate = GetPropertyAccessor().GetProperty(
66 tab_contents()->property_bag());
67 if (delegate) {
68 std::string json_retval;
69 if (!args->GetString(0, &json_retval))
70 NOTREACHED() << "Could not read JSON arguments";
71
72 (*delegate)->OnDialogClosed(json_retval);
73 }
74 }
75
ExternalHtmlDialogUI(TabContents * tab_contents)76 ExternalHtmlDialogUI::ExternalHtmlDialogUI(TabContents* tab_contents)
77 : HtmlDialogUI(tab_contents) {
78 // Non-file based UI needs to not have access to the Web UI bindings
79 // for security reasons. The code hosting the dialog should provide
80 // dialog specific functionality through other bindings and methods
81 // that are scoped in duration to the dialogs existence.
82 bindings_ &= ~BindingsPolicy::WEB_UI;
83 }
84
~ExternalHtmlDialogUI()85 ExternalHtmlDialogUI::~ExternalHtmlDialogUI() {
86 }
87
OnWindowClosed()88 void HtmlDialogUIDelegate::OnWindowClosed() {
89 }
90
HandleContextMenu(const ContextMenuParams & params)91 bool HtmlDialogUIDelegate::HandleContextMenu(const ContextMenuParams& params) {
92 return false;
93 }
94