chrome/browser/ui/webui/constrained_web_dialog_ui.cc

   1 // Copyright (c) 2012 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/constrained_web_dialog_ui.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/bind.h"
  11 #include "base/bind_helpers.h"
  12 #include "base/lazy_instance.h"
  13 #include "base/values.h"
  14 #include "content/public/browser/notification_service.h"
  15 #include "content/public/browser/render_view_host.h"
  16 #include "content/public/browser/web_contents.h"
  17 #include "content/public/browser/web_ui.h"
  18 #include "ui/web_dialogs/web_dialog_delegate.h"
  19 #include "ui/web_dialogs/web_dialog_ui.h"
  20
  21 using content::RenderViewHost;
  22 using content::WebContents;
  23 using content::WebUIMessageHandler;
  24
  25 namespace {
  26
  27 const char kConstrainedWebDialogDelegateUserDataKey[] =
  28     "ConstrainedWebDialogDelegateUserData";
  29
  30 class ConstrainedWebDialogDelegateUserData
  31     : public base::SupportsUserData::Data {
  32  public:
  33   explicit ConstrainedWebDialogDelegateUserData(
  34       ConstrainedWebDialogDelegate* delegate) : delegate_(delegate) {}
  35   virtual ~ConstrainedWebDialogDelegateUserData() {}
  36
  37   ConstrainedWebDialogDelegate* delegate() { return delegate_; }
  38
  39  private:
  40   ConstrainedWebDialogDelegate* delegate_;  // unowned
  41
  42   DISALLOW_COPY_AND_ASSIGN(ConstrainedWebDialogDelegateUserData);
  43 };
  44
  45 }  // namespace
  46
  47 ConstrainedWebDialogUI::ConstrainedWebDialogUI(content::WebUI* web_ui)
  48     : WebUIController(web_ui) {
  49 }
  50
  51 ConstrainedWebDialogUI::~ConstrainedWebDialogUI() {
  52 }
  53
  54 void ConstrainedWebDialogUI::RenderViewCreated(
  55     RenderViewHost* render_view_host) {
  56   ConstrainedWebDialogDelegate* delegate = GetConstrainedDelegate();
  57   if (!delegate)
  58     return;
  59
  60   ui::WebDialogDelegate* dialog_delegate = delegate->GetWebDialogDelegate();
  61   std::vector<WebUIMessageHandler*> handlers;
  62   dialog_delegate->GetWebUIMessageHandlers(&handlers);
  63   render_view_host->SetWebUIProperty("dialogArguments",
  64                                      dialog_delegate->GetDialogArgs());
  65   for (std::vector<WebUIMessageHandler*>::iterator it = handlers.begin();
  66        it != handlers.end(); ++it) {
  67     web_ui()->AddMessageHandler(*it);
  68   }
  69
  70   // Add a "DialogClose" callback which matches WebDialogUI behavior.
  71   web_ui()->RegisterMessageCallback("DialogClose",
  72       base::Bind(&ConstrainedWebDialogUI::OnDialogCloseMessage,
  73                  base::Unretained(this)));
  74
  75   dialog_delegate->OnDialogShown(web_ui(), render_view_host);
  76 }
  77
  78 void ConstrainedWebDialogUI::OnDialogCloseMessage(const base::ListValue* args) {
  79   ConstrainedWebDialogDelegate* delegate = GetConstrainedDelegate();
  80   if (!delegate)
  81     return;
  82
  83   std::string json_retval;
  84   if (!args->empty() && !args->GetString(0, &json_retval))
  85     NOTREACHED() << "Could not read JSON argument";
  86   delegate->GetWebDialogDelegate()->OnDialogClosed(json_retval);
  87   delegate->OnDialogCloseFromWebUI();
  88 }
  89
  90 // static
  91 void ConstrainedWebDialogUI::SetConstrainedDelegate(
  92     content::WebContents* web_contents,
  93     ConstrainedWebDialogDelegate* delegate) {
  94   web_contents->SetUserData(&kConstrainedWebDialogDelegateUserDataKey,
  95                             new ConstrainedWebDialogDelegateUserData(delegate));
  96 }
  97
  98 ConstrainedWebDialogDelegate* ConstrainedWebDialogUI::GetConstrainedDelegate() {
  99   ConstrainedWebDialogDelegateUserData* user_data =
 100       static_cast<ConstrainedWebDialogDelegateUserData*>(
 101           web_ui()->GetWebContents()->
 102               GetUserData(&kConstrainedWebDialogDelegateUserDataKey));
 103
 104   return user_data ? user_data->delegate() : NULL;
 105 }