src/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 #if defined(ENABLE_EXTENSIONS)
  22 #include "chrome/browser/extensions/tab_helper.h"
  23 #endif
  24
  25 using content::RenderViewHost;
  26 using content::WebContents;
  27 using content::WebUIMessageHandler;
  28
  29 namespace {
  30
  31 const char kConstrainedWebDialogDelegateUserDataKey[] =
  32     "ConstrainedWebDialogDelegateUserData";
  33
  34 class ConstrainedWebDialogDelegateUserData
  35     : public base::SupportsUserData::Data {
  36  public:
  37   explicit ConstrainedWebDialogDelegateUserData(
  38       ConstrainedWebDialogDelegate* delegate) : delegate_(delegate) {}
  39   virtual ~ConstrainedWebDialogDelegateUserData() {}
  40
  41   ConstrainedWebDialogDelegate* delegate() { return delegate_; }
  42
  43  private:
  44   ConstrainedWebDialogDelegate* delegate_;  // unowned
  45
  46   DISALLOW_COPY_AND_ASSIGN(ConstrainedWebDialogDelegateUserData);
  47 };
  48
  49 }  // namespace
  50
  51 ConstrainedWebDialogUI::ConstrainedWebDialogUI(content::WebUI* web_ui)
  52     : WebUIController(web_ui) {
  53 #if defined(ENABLE_EXTENSIONS)
  54   extensions::TabHelper::CreateForWebContents(web_ui->GetWebContents());
  55 #endif
  56 }
  57
  58 ConstrainedWebDialogUI::~ConstrainedWebDialogUI() {
  59 }
  60
  61 void ConstrainedWebDialogUI::RenderViewCreated(
  62     RenderViewHost* render_view_host) {
  63   ConstrainedWebDialogDelegate* delegate = GetConstrainedDelegate();
  64   if (!delegate)
  65     return;
  66
  67   ui::WebDialogDelegate* dialog_delegate = delegate->GetWebDialogDelegate();
  68   std::vector<WebUIMessageHandler*> handlers;
  69   dialog_delegate->GetWebUIMessageHandlers(&handlers);
  70   render_view_host->SetWebUIProperty("dialogArguments",
  71                                      dialog_delegate->GetDialogArgs());
  72   for (std::vector<WebUIMessageHandler*>::iterator it = handlers.begin();
  73        it != handlers.end(); ++it) {
  74     web_ui()->AddMessageHandler(*it);
  75   }
  76
  77   // Add a "dialogClose" callback which matches WebDialogUI behavior.
  78   web_ui()->RegisterMessageCallback("dialogClose",
  79       base::Bind(&ConstrainedWebDialogUI::OnDialogCloseMessage,
  80                  base::Unretained(this)));
  81
  82   dialog_delegate->OnDialogShown(web_ui(), render_view_host);
  83 }
  84
  85 void ConstrainedWebDialogUI::OnDialogCloseMessage(const base::ListValue* args) {
  86   ConstrainedWebDialogDelegate* delegate = GetConstrainedDelegate();
  87   if (!delegate)
  88     return;
  89
  90   std::string json_retval;
  91   if (!args->empty() && !args->GetString(0, &json_retval))
  92     NOTREACHED() << "Could not read JSON argument";
  93   delegate->GetWebDialogDelegate()->OnDialogClosed(json_retval);
  94   delegate->OnDialogCloseFromWebUI();
  95 }
  96
  97 // static
  98 void ConstrainedWebDialogUI::SetConstrainedDelegate(
  99     content::WebContents* web_contents,
 100     ConstrainedWebDialogDelegate* delegate) {
 101   web_contents->SetUserData(&kConstrainedWebDialogDelegateUserDataKey,
 102                             new ConstrainedWebDialogDelegateUserData(delegate));
 103 }
 104
 105 ConstrainedWebDialogDelegate* ConstrainedWebDialogUI::GetConstrainedDelegate() {
 106   ConstrainedWebDialogDelegateUserData* user_data =
 107       static_cast<ConstrainedWebDialogDelegateUserData*>(
 108           web_ui()->GetWebContents()->
 109               GetUserData(&kConstrainedWebDialogDelegateUserDataKey));
 110
 111   return user_data ? user_data->delegate() : NULL;
 112 }