ui/views/controls/webview/web_dialog_view.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 "ui/views/controls/webview/web_dialog_view.h"
   6
   7 #include <vector>
   8
   9 #include "base/strings/utf_string_conversions.h"
  10 #include "content/public/browser/browser_context.h"
  11 #include "content/public/browser/native_web_keyboard_event.h"
  12 #include "content/public/browser/notification_details.h"
  13 #include "content/public/browser/notification_source.h"
  14 #include "content/public/browser/notification_types.h"
  15 #include "content/public/browser/render_frame_host.h"
  16 #include "content/public/browser/web_contents.h"
  17 #include "ui/events/event.h"
  18 #include "ui/events/keycodes/keyboard_codes.h"
  19 #include "ui/views/controls/webview/webview.h"
  20 #include "ui/views/layout/fill_layout.h"
  21 #include "ui/views/widget/native_widget_private.h"
  22 #include "ui/views/widget/root_view.h"
  23 #include "ui/views/widget/widget.h"
  24 #include "ui/web_dialogs/web_dialog_delegate.h"
  25 #include "ui/web_dialogs/web_dialog_ui.h"
  26
  27 using content::NativeWebKeyboardEvent;
  28 using content::WebContents;
  29 using content::WebUIMessageHandler;
  30 using ui::WebDialogDelegate;
  31 using ui::WebDialogUI;
  32 using ui::WebDialogWebContentsDelegate;
  33
  34 namespace views {
  35
  36 ////////////////////////////////////////////////////////////////////////////////
  37 // WebDialogView, public:
  38
  39 WebDialogView::WebDialogView(
  40     content::BrowserContext* context,
  41     WebDialogDelegate* delegate,
  42     WebContentsHandler* handler)
  43     : ClientView(NULL, NULL),
  44       WebDialogWebContentsDelegate(context, handler),
  45       delegate_(delegate),
  46       web_view_(new views::WebView(context)),
  47       is_attempting_close_dialog_(false),
  48       before_unload_fired_(false),
  49       closed_via_webui_(false),
  50       close_contents_called_(false) {
  51   web_view_->set_allow_accelerators(true);
  52   AddChildView(web_view_);
  53   set_contents_view(web_view_);
  54   SetLayoutManager(new views::FillLayout);
  55   // Pressing the ESC key will close the dialog.
  56   AddAccelerator(ui::Accelerator(ui::VKEY_ESCAPE, ui::EF_NONE));
  57 }
  58
  59 WebDialogView::~WebDialogView() {
  60 }
  61
  62 content::WebContents* WebDialogView::web_contents() {
  63   return web_view_->web_contents();
  64 }
  65
  66 ////////////////////////////////////////////////////////////////////////////////
  67 // WebDialogView, views::View implementation:
  68
  69 gfx::Size WebDialogView::GetPreferredSize() const {
  70   gfx::Size out;
  71   if (delegate_)
  72     delegate_->GetDialogSize(&out);
  73   return out;
  74 }
  75
  76 gfx::Size WebDialogView::GetMinimumSize() const {
  77   gfx::Size out;
  78   if (delegate_)
  79     delegate_->GetMinimumDialogSize(&out);
  80   return out;
  81 }
  82
  83 bool WebDialogView::AcceleratorPressed(const ui::Accelerator& accelerator) {
  84   // Pressing ESC closes the dialog.
  85   DCHECK_EQ(ui::VKEY_ESCAPE, accelerator.key_code());
  86   if (GetWidget())
  87     GetWidget()->Close();
  88   return true;
  89 }
  90
  91 void WebDialogView::ViewHierarchyChanged(
  92     const ViewHierarchyChangedDetails& details) {
  93   if (details.is_add && GetWidget())
  94     InitDialog();
  95 }
  96
  97 bool WebDialogView::CanClose() {
  98   // Don't close UI if |delegate_| does not allow users to close it by
  99   // clicking on "x" button or pressing Esc shortcut key on hosting dialog.
 100   if (!delegate_->CanCloseDialog() && !close_contents_called_)
 101     return false;
 102
 103   // If CloseContents() is called before CanClose(), which is called by
 104   // RenderViewHostImpl::ClosePageIgnoringUnloadEvents, it indicates
 105   // beforeunload event should not be fired during closing.
 106   if ((is_attempting_close_dialog_ && before_unload_fired_) ||
 107       close_contents_called_) {
 108     is_attempting_close_dialog_ = false;
 109     before_unload_fired_ = false;
 110     return true;
 111   }
 112
 113   if (!is_attempting_close_dialog_) {
 114     // Fire beforeunload event when user attempts to close the dialog.
 115     is_attempting_close_dialog_ = true;
 116     web_view_->web_contents()->DispatchBeforeUnload(false);
 117   }
 118   return false;
 119 }
 120
 121 ////////////////////////////////////////////////////////////////////////////////
 122 // WebDialogView, views::WidgetDelegate implementation:
 123
 124 bool WebDialogView::CanResize() const {
 125   if (delegate_)
 126     return delegate_->CanResizeDialog();
 127   return true;
 128 }
 129
 130 ui::ModalType WebDialogView::GetModalType() const {
 131   return GetDialogModalType();
 132 }
 133
 134 base::string16 WebDialogView::GetWindowTitle() const {
 135   if (delegate_)
 136     return delegate_->GetDialogTitle();
 137   return base::string16();
 138 }
 139
 140 std::string WebDialogView::GetWindowName() const {
 141   if (delegate_)
 142     return delegate_->GetDialogName();
 143   return std::string();
 144 }
 145
 146 void WebDialogView::WindowClosing() {
 147   // If we still have a delegate that means we haven't notified it of the
 148   // dialog closing. This happens if the user clicks the Close button on the
 149   // dialog.
 150   if (delegate_)
 151     OnDialogClosed("");
 152 }
 153
 154 views::View* WebDialogView::GetContentsView() {
 155   return this;
 156 }
 157
 158 views::ClientView* WebDialogView::CreateClientView(views::Widget* widget) {
 159   return this;
 160 }
 161
 162 views::View* WebDialogView::GetInitiallyFocusedView() {
 163   return web_view_;
 164 }
 165
 166 bool WebDialogView::ShouldShowWindowTitle() const {
 167   return ShouldShowDialogTitle();
 168 }
 169
 170 views::Widget* WebDialogView::GetWidget() {
 171   return View::GetWidget();
 172 }
 173
 174 const views::Widget* WebDialogView::GetWidget() const {
 175   return View::GetWidget();
 176 }
 177
 178 ////////////////////////////////////////////////////////////////////////////////
 179 // WebDialogDelegate implementation:
 180
 181 ui::ModalType WebDialogView::GetDialogModalType() const {
 182   if (delegate_)
 183     return delegate_->GetDialogModalType();
 184   return ui::MODAL_TYPE_NONE;
 185 }
 186
 187 base::string16 WebDialogView::GetDialogTitle() const {
 188   return GetWindowTitle();
 189 }
 190
 191 GURL WebDialogView::GetDialogContentURL() const {
 192   if (delegate_)
 193     return delegate_->GetDialogContentURL();
 194   return GURL();
 195 }
 196
 197 void WebDialogView::GetWebUIMessageHandlers(
 198     std::vector<WebUIMessageHandler*>* handlers) const {
 199   if (delegate_)
 200     delegate_->GetWebUIMessageHandlers(handlers);
 201 }
 202
 203 void WebDialogView::GetDialogSize(gfx::Size* size) const {
 204   if (delegate_)
 205     delegate_->GetDialogSize(size);
 206 }
 207
 208 void WebDialogView::GetMinimumDialogSize(gfx::Size* size) const {
 209   if (delegate_)
 210     delegate_->GetMinimumDialogSize(size);
 211 }
 212
 213 std::string WebDialogView::GetDialogArgs() const {
 214   if (delegate_)
 215     return delegate_->GetDialogArgs();
 216   return std::string();
 217 }
 218
 219 void WebDialogView::OnDialogShown(content::WebUI* webui,
 220                                   content::RenderViewHost* render_view_host) {
 221   if (delegate_)
 222     delegate_->OnDialogShown(webui, render_view_host);
 223 }
 224
 225 void WebDialogView::OnDialogClosed(const std::string& json_retval) {
 226   Detach();
 227   if (delegate_) {
 228     // Store the dialog content area size.
 229     delegate_->StoreDialogSize(GetContentsBounds().size());
 230   }
 231
 232   if (GetWidget())
 233     GetWidget()->Close();
 234
 235   if (delegate_) {
 236     delegate_->OnDialogClosed(json_retval);
 237     delegate_ = NULL;  // We will not communicate further with the delegate.
 238   }
 239 }
 240
 241 void WebDialogView::OnDialogCloseFromWebUI(const std::string& json_retval) {
 242   closed_via_webui_ = true;
 243   dialog_close_retval_ = json_retval;
 244   if (GetWidget())
 245     GetWidget()->Close();
 246 }
 247
 248 void WebDialogView::OnCloseContents(WebContents* source,
 249                                     bool* out_close_dialog) {
 250   if (delegate_)
 251     delegate_->OnCloseContents(source, out_close_dialog);
 252 }
 253
 254 bool WebDialogView::ShouldShowDialogTitle() const {
 255   if (delegate_)
 256     return delegate_->ShouldShowDialogTitle();
 257   return true;
 258 }
 259
 260 bool WebDialogView::HandleContextMenu(
 261     const content::ContextMenuParams& params) {
 262   if (delegate_)
 263     return delegate_->HandleContextMenu(params);
 264   return WebDialogWebContentsDelegate::HandleContextMenu(params);
 265 }
 266
 267 ////////////////////////////////////////////////////////////////////////////////
 268 // content::WebContentsDelegate implementation:
 269
 270 void WebDialogView::MoveContents(WebContents* source, const gfx::Rect& pos) {
 271   // The contained web page wishes to resize itself. We let it do this because
 272   // if it's a dialog we know about, we trust it not to be mean to the user.
 273   GetWidget()->SetBounds(pos);
 274 }
 275
 276 // A simplified version of BrowserView::HandleKeyboardEvent().
 277 // We don't handle global keyboard shortcuts here, but that's fine since
 278 // they're all browser-specific. (This may change in the future.)
 279 void WebDialogView::HandleKeyboardEvent(content::WebContents* source,
 280                                         const NativeWebKeyboardEvent& event) {
 281   if (!event.os_event)
 282     return;
 283
 284   GetWidget()->native_widget_private()->RepostNativeEvent(event.os_event);
 285 }
 286
 287 void WebDialogView::CloseContents(WebContents* source) {
 288   close_contents_called_ = true;
 289   bool close_dialog = false;
 290   OnCloseContents(source, &close_dialog);
 291   if (close_dialog)
 292     OnDialogClosed(closed_via_webui_ ? dialog_close_retval_ : std::string());
 293 }
 294
 295 content::WebContents* WebDialogView::OpenURLFromTab(
 296     content::WebContents* source,
 297     const content::OpenURLParams& params) {
 298   content::WebContents* new_contents = NULL;
 299   if (delegate_ &&
 300       delegate_->HandleOpenURLFromTab(source, params, &new_contents)) {
 301     return new_contents;
 302   }
 303   return WebDialogWebContentsDelegate::OpenURLFromTab(source, params);
 304 }
 305
 306 void WebDialogView::AddNewContents(content::WebContents* source,
 307                                    content::WebContents* new_contents,
 308                                    WindowOpenDisposition disposition,
 309                                    const gfx::Rect& initial_rect,
 310                                    bool user_gesture,
 311                                    bool* was_blocked) {
 312   if (delegate_ && delegate_->HandleAddNewContents(
 313           source, new_contents, disposition, initial_rect, user_gesture)) {
 314     return;
 315   }
 316   WebDialogWebContentsDelegate::AddNewContents(
 317       source, new_contents, disposition, initial_rect, user_gesture,
 318       was_blocked);
 319 }
 320
 321 void WebDialogView::LoadingStateChanged(content::WebContents* source,
 322     bool to_different_document) {
 323   if (delegate_)
 324     delegate_->OnLoadingStateChanged(source);
 325 }
 326
 327 void WebDialogView::BeforeUnloadFired(content::WebContents* tab,
 328                                       bool proceed,
 329                                       bool* proceed_to_fire_unload) {
 330   before_unload_fired_ = true;
 331   *proceed_to_fire_unload = proceed;
 332 }
 333
 334 bool WebDialogView::ShouldCreateWebContents(
 335     content::WebContents* web_contents,
 336     int route_id,
 337     int main_frame_route_id,
 338     WindowContainerType window_container_type,
 339     const base::string16& frame_name,
 340     const GURL& target_url,
 341     const std::string& partition_id,
 342     content::SessionStorageNamespace* session_storage_namespace) {
 343   if (delegate_)
 344     return delegate_->HandleShouldCreateWebContents();
 345   return true;
 346 }
 347
 348 ////////////////////////////////////////////////////////////////////////////////
 349 // WebDialogView, private:
 350
 351 void WebDialogView::InitDialog() {
 352   content::WebContents* web_contents = web_view_->GetWebContents();
 353   if (web_contents->GetDelegate() == this)
 354     return;
 355
 356   web_contents->SetDelegate(this);
 357
 358   // Set the delegate. This must be done before loading the page. See
 359   // the comment above WebDialogUI in its header file for why.
 360   WebDialogUI::SetDelegate(web_contents, this);
 361
 362   web_view_->LoadInitialURL(GetDialogContentURL());
 363 }
 364
 365 }  // namespace views