chrome/browser/ui/views/chrome_views_delegate.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/views/chrome_views_delegate.h"
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "base/prefs/pref_service.h"
   9 #include "base/prefs/scoped_user_pref_update.h"
  10 #include "base/strings/string_util.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "base/time/time.h"
  13 #include "chrome/browser/browser_process.h"
  14 #include "chrome/browser/profiles/profile_manager.h"
  15 #include "chrome/browser/ui/views/accessibility/accessibility_event_router_views.h"
  16 #include "chrome/common/pref_names.h"
  17 #include "grit/chrome_unscaled_resources.h"
  18 #include "ui/base/resource/resource_bundle.h"
  19 #include "ui/base/ui_base_switches.h"
  20 #include "ui/gfx/rect.h"
  21 #include "ui/gfx/screen.h"
  22 #include "ui/views/widget/native_widget.h"
  23 #include "ui/views/widget/widget.h"
  24
  25 #if defined(OS_WIN)
  26 #include <dwmapi.h>
  27 #include <shellapi.h>
  28 #include "base/task_runner_util.h"
  29 #include "base/win/windows_version.h"
  30 #include "chrome/browser/app_icon_win.h"
  31 #include "content/public/browser/browser_thread.h"
  32 #include "ui/base/win/shell.h"
  33 #endif
  34
  35 #if defined(USE_AURA)
  36 #include "content/public/browser/context_factory.h"
  37 #include "ui/aura/window.h"
  38 #include "ui/aura/window_event_dispatcher.h"
  39 #endif
  40
  41 #if defined(USE_AURA) && !defined(OS_CHROMEOS)
  42 #include "chrome/browser/ui/host_desktop.h"
  43 #include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
  44 #include "ui/views/widget/native_widget_aura.h"
  45 #endif
  46
  47 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
  48 #include "ui/views/linux_ui/linux_ui.h"
  49 #endif
  50
  51 #if defined(USE_ASH)
  52 #include "ash/shell.h"
  53 #include "ash/wm/window_state.h"
  54 #include "chrome/browser/ui/ash/accessibility/automation_manager_views.h"
  55 #include "chrome/browser/ui/ash/ash_init.h"
  56 #include "chrome/browser/ui/ash/ash_util.h"
  57 #endif
  58
  59
  60 // Helpers --------------------------------------------------------------------
  61
  62 namespace {
  63
  64 Profile* GetProfileForWindow(const views::Widget* window) {
  65   if (!window)
  66     return NULL;
  67   return reinterpret_cast<Profile*>(
  68       window->GetNativeWindowProperty(Profile::kProfileKey));
  69 }
  70
  71 // If the given window has a profile associated with it, use that profile's
  72 // preference service. Otherwise, store and retrieve the data from Local State.
  73 // This function may return NULL if the necessary pref service has not yet
  74 // been initialized.
  75 // TODO(mirandac): This function will also separate windows by profile in a
  76 // multi-profile environment.
  77 PrefService* GetPrefsForWindow(const views::Widget* window) {
  78   Profile* profile = GetProfileForWindow(window);
  79   if (!profile) {
  80     // Use local state for windows that have no explicit profile.
  81     return g_browser_process->local_state();
  82   }
  83   return profile->GetPrefs();
  84 }
  85
  86 #if defined(OS_WIN)
  87 bool MonitorHasTopmostAutohideTaskbarForEdge(UINT edge, const RECT& rect) {
  88   APPBARDATA taskbar_data = { sizeof(APPBARDATA), NULL, 0, edge, rect };
  89   // NOTE: This call spins a nested message loop.
  90   HWND taskbar = reinterpret_cast<HWND>(SHAppBarMessage(ABM_GETAUTOHIDEBAREX,
  91                                                         &taskbar_data));
  92   return ::IsWindow(taskbar) &&
  93       (GetWindowLong(taskbar, GWL_EXSTYLE) & WS_EX_TOPMOST);
  94 }
  95
  96 int GetAppbarAutohideEdgesOnWorkerThread(HMONITOR monitor) {
  97   DCHECK(monitor);
  98
  99   MONITORINFO mi = { sizeof(MONITORINFO) };
 100   GetMonitorInfo(monitor, &mi);
 101
 102   int edges = 0;
 103   if (MonitorHasTopmostAutohideTaskbarForEdge(ABE_LEFT, mi.rcMonitor))
 104     edges |= views::ViewsDelegate::EDGE_LEFT;
 105   if (MonitorHasTopmostAutohideTaskbarForEdge(ABE_TOP, mi.rcMonitor))
 106     edges |= views::ViewsDelegate::EDGE_TOP;
 107   if (MonitorHasTopmostAutohideTaskbarForEdge(ABE_RIGHT, mi.rcMonitor))
 108     edges |= views::ViewsDelegate::EDGE_RIGHT;
 109   if (MonitorHasTopmostAutohideTaskbarForEdge(ABE_BOTTOM, mi.rcMonitor))
 110     edges |= views::ViewsDelegate::EDGE_BOTTOM;
 111   return edges;
 112 }
 113 #endif
 114
 115 }  // namespace
 116
 117
 118 // ChromeViewsDelegate --------------------------------------------------------
 119
 120 #if defined(OS_WIN)
 121 ChromeViewsDelegate::ChromeViewsDelegate()
 122     : weak_factory_(this),
 123       in_autohide_edges_callback_(false) {
 124 #else
 125 ChromeViewsDelegate::ChromeViewsDelegate() {
 126 #endif
 127 }
 128
 129 ChromeViewsDelegate::~ChromeViewsDelegate() {
 130 }
 131
 132 void ChromeViewsDelegate::SaveWindowPlacement(const views::Widget* window,
 133                                               const std::string& window_name,
 134                                               const gfx::Rect& bounds,
 135                                               ui::WindowShowState show_state) {
 136   PrefService* prefs = GetPrefsForWindow(window);
 137   if (!prefs)
 138     return;
 139
 140   DCHECK(prefs->FindPreference(window_name.c_str()));
 141   DictionaryPrefUpdate update(prefs, window_name.c_str());
 142   base::DictionaryValue* window_preferences = update.Get();
 143   window_preferences->SetInteger("left", bounds.x());
 144   window_preferences->SetInteger("top", bounds.y());
 145   window_preferences->SetInteger("right", bounds.right());
 146   window_preferences->SetInteger("bottom", bounds.bottom());
 147   window_preferences->SetBoolean("maximized",
 148                                  show_state == ui::SHOW_STATE_MAXIMIZED);
 149   gfx::Rect work_area(gfx::Screen::GetScreenFor(window->GetNativeView())->
 150       GetDisplayNearestWindow(window->GetNativeView()).work_area());
 151   window_preferences->SetInteger("work_area_left", work_area.x());
 152   window_preferences->SetInteger("work_area_top", work_area.y());
 153   window_preferences->SetInteger("work_area_right", work_area.right());
 154   window_preferences->SetInteger("work_area_bottom", work_area.bottom());
 155 }
 156
 157 bool ChromeViewsDelegate::GetSavedWindowPlacement(
 158     const views::Widget* widget,
 159     const std::string& window_name,
 160     gfx::Rect* bounds,
 161     ui::WindowShowState* show_state) const {
 162   PrefService* prefs = g_browser_process->local_state();
 163   if (!prefs)
 164     return false;
 165
 166   DCHECK(prefs->FindPreference(window_name.c_str()));
 167   const base::DictionaryValue* dictionary =
 168       prefs->GetDictionary(window_name.c_str());
 169   int left, top, right, bottom;
 170   if (!dictionary || !dictionary->GetInteger("left", &left) ||
 171       !dictionary->GetInteger("top", &top) ||
 172       !dictionary->GetInteger("right", &right) ||
 173       !dictionary->GetInteger("bottom", &bottom))
 174     return false;
 175
 176   bounds->SetRect(left, top, right - left, bottom - top);
 177
 178   bool maximized = false;
 179   if (dictionary)
 180     dictionary->GetBoolean("maximized", &maximized);
 181   *show_state = maximized ? ui::SHOW_STATE_MAXIMIZED : ui::SHOW_STATE_NORMAL;
 182
 183 #if defined(USE_ASH)
 184   // On Ash environment, a window won't span across displays.  Adjust
 185   // the bounds to fit the work area.
 186   gfx::NativeView window = widget->GetNativeView();
 187   if (chrome::GetHostDesktopTypeForNativeView(window) ==
 188       chrome::HOST_DESKTOP_TYPE_ASH) {
 189     gfx::Display display = gfx::Screen::GetScreenFor(window)->
 190         GetDisplayMatching(*bounds);
 191     bounds->AdjustToFit(display.work_area());
 192     ash::wm::GetWindowState(window)->set_minimum_visibility(true);
 193   }
 194 #endif
 195   return true;
 196 }
 197
 198 void ChromeViewsDelegate::NotifyAccessibilityEvent(
 199     views::View* view, ui::AXEvent event_type) {
 200   AccessibilityEventRouterViews::GetInstance()->HandleAccessibilityEvent(
 201       view, event_type);
 202
 203 #if defined(USE_ASH)
 204   AutomationManagerViews::GetInstance()->HandleEvent(
 205       GetProfileForWindow(view->GetWidget()), view, event_type);
 206 #endif
 207 }
 208
 209 void ChromeViewsDelegate::NotifyMenuItemFocused(
 210     const base::string16& menu_name,
 211     const base::string16& menu_item_name,
 212     int item_index,
 213     int item_count,
 214     bool has_submenu) {
 215   AccessibilityEventRouterViews::GetInstance()->HandleMenuItemFocused(
 216       menu_name, menu_item_name, item_index, item_count, has_submenu);
 217 }
 218
 219 #if defined(OS_WIN)
 220 HICON ChromeViewsDelegate::GetDefaultWindowIcon() const {
 221   return GetAppIcon();
 222 }
 223
 224 bool ChromeViewsDelegate::IsWindowInMetro(gfx::NativeWindow window) const {
 225   return chrome::IsNativeViewInAsh(window);
 226 }
 227
 228 #elif defined(OS_LINUX) && !defined(OS_CHROMEOS)
 229 gfx::ImageSkia* ChromeViewsDelegate::GetDefaultWindowIcon() const {
 230   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 231   return rb.GetImageSkiaNamed(IDR_PRODUCT_LOGO_64);
 232 }
 233 #endif
 234
 235 #if defined(USE_ASH)
 236 views::NonClientFrameView* ChromeViewsDelegate::CreateDefaultNonClientFrameView(
 237     views::Widget* widget) {
 238   return chrome::IsNativeViewInAsh(widget->GetNativeView()) ?
 239       ash::Shell::GetInstance()->CreateDefaultNonClientFrameView(widget) : NULL;
 240 }
 241 #endif
 242
 243 void ChromeViewsDelegate::AddRef() {
 244   g_browser_process->AddRefModule();
 245 }
 246
 247 void ChromeViewsDelegate::ReleaseRef() {
 248   g_browser_process->ReleaseModule();
 249 }
 250
 251 void ChromeViewsDelegate::OnBeforeWidgetInit(
 252     views::Widget::InitParams* params,
 253     views::internal::NativeWidgetDelegate* delegate) {
 254   // We need to determine opacity if it's not already specified.
 255   if (params->opacity == views::Widget::InitParams::INFER_OPACITY)
 256     params->opacity = GetOpacityForInitParams(*params);
 257
 258   // If we already have a native_widget, we don't have to try to come
 259   // up with one.
 260   if (params->native_widget)
 261     return;
 262
 263 #if defined(USE_AURA) && !defined(OS_CHROMEOS)
 264   bool use_non_toplevel_window =
 265       params->parent && params->type != views::Widget::InitParams::TYPE_MENU;
 266
 267 #if defined(OS_WIN)
 268   // On desktop Linux Chrome must run in an environment that supports a variety
 269   // of window managers, some of which do not play nicely with parts of our UI
 270   // that have specific expectations about window sizing and placement. For this
 271   // reason windows opened as top level (params.top_level) are always
 272   // constrained by the browser frame, so we can position them correctly. This
 273   // has some negative side effects, like dialogs being clipped by the browser
 274   // frame, but the side effects are not as bad as the poor window manager
 275   // interactions. On Windows however these WM interactions are not an issue, so
 276   // we open windows requested as top_level as actual top level windows on the
 277   // desktop.
 278   use_non_toplevel_window = use_non_toplevel_window &&
 279       (!params->top_level ||
 280        chrome::GetHostDesktopTypeForNativeView(params->parent) !=
 281           chrome::HOST_DESKTOP_TYPE_NATIVE);
 282
 283   if (!ui::win::IsAeroGlassEnabled()) {
 284     // If we don't have composition (either because Glass is not enabled or
 285     // because it was disabled at the command line), anything that requires
 286     // transparency will be broken with a toplevel window, so force the use of
 287     // a non toplevel window.
 288     if (params->opacity == views::Widget::InitParams::TRANSLUCENT_WINDOW &&
 289         params->type != views::Widget::InitParams::TYPE_MENU)
 290       use_non_toplevel_window = true;
 291   } else {
 292     // If we're on Vista+ with composition enabled, then we can use toplevel
 293     // windows for most things (they get blended via WS_EX_COMPOSITED, which
 294     // allows for animation effects, but also exceeding the bounds of the parent
 295     // window).
 296     if (chrome::GetActiveDesktop() != chrome::HOST_DESKTOP_TYPE_ASH &&
 297         params->parent &&
 298         params->type != views::Widget::InitParams::TYPE_CONTROL &&
 299         params->type != views::Widget::InitParams::TYPE_WINDOW) {
 300       // When we set this to false, we get a DesktopNativeWidgetAura from the
 301       // default case (not handled in this function).
 302       use_non_toplevel_window = false;
 303     }
 304   }
 305 #endif  // OS_WIN
 306 #endif  // USE_AURA
 307
 308 #if defined(OS_CHROMEOS)
 309   // When we are doing straight chromeos builds, we still need to handle the
 310   // toplevel window case.
 311   // There may be a few remaining widgets in Chrome OS that are not top level,
 312   // but have neither a context nor a parent. Provide a fallback context so
 313   // users don't crash. Developers will hit the DCHECK and should provide a
 314   // context.
 315   if (params->context)
 316     params->context = params->context->GetRootWindow();
 317   DCHECK(params->parent || params->context || params->top_level)
 318       << "Please provide a parent or context for this widget.";
 319   if (!params->parent && !params->context)
 320     params->context = ash::Shell::GetPrimaryRootWindow();
 321 #elif defined(USE_AURA)
 322   // While the majority of the time, context wasn't plumbed through due to the
 323   // existence of a global WindowTreeClient, if this window is a toplevel, it's
 324   // possible that there is no contextual state that we can use.
 325   if (params->parent == NULL && params->context == NULL && params->top_level) {
 326     // We need to make a decision about where to place this window based on the
 327     // desktop type.
 328     switch (chrome::GetActiveDesktop()) {
 329       case chrome::HOST_DESKTOP_TYPE_NATIVE:
 330         // If we're native, we should give this window its own toplevel desktop
 331         // widget.
 332         params->native_widget = new views::DesktopNativeWidgetAura(delegate);
 333         break;
 334 #if defined(USE_ASH)
 335       case chrome::HOST_DESKTOP_TYPE_ASH:
 336         // If we're in ash, give this window the context of the main monitor.
 337         params->context = ash::Shell::GetPrimaryRootWindow();
 338         break;
 339 #endif
 340       default:
 341         NOTREACHED();
 342     }
 343   } else if (use_non_toplevel_window) {
 344     views::NativeWidgetAura* native_widget =
 345         new views::NativeWidgetAura(delegate);
 346     if (params->parent) {
 347       Profile* parent_profile = reinterpret_cast<Profile*>(
 348           params->parent->GetNativeWindowProperty(Profile::kProfileKey));
 349       native_widget->SetNativeWindowProperty(Profile::kProfileKey,
 350                                              parent_profile);
 351     }
 352     params->native_widget = native_widget;
 353   } else if (params->type != views::Widget::InitParams::TYPE_TOOLTIP) {
 354     // TODO(erg): Once we've threaded context to everywhere that needs it, we
 355     // should remove this check here.
 356     gfx::NativeView to_check =
 357         params->context ? params->context : params->parent;
 358     if (chrome::GetHostDesktopTypeForNativeView(to_check) ==
 359         chrome::HOST_DESKTOP_TYPE_NATIVE) {
 360       params->native_widget = new views::DesktopNativeWidgetAura(delegate);
 361     }
 362   }
 363 #endif
 364 }
 365
 366 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 367 bool ChromeViewsDelegate::WindowManagerProvidesTitleBar(bool maximized) {
 368   // On Ubuntu Unity, the system always provides a title bar for maximized
 369   // windows.
 370   views::LinuxUI* ui = views::LinuxUI::instance();
 371   return maximized && ui && ui->UnityIsRunning();
 372 }
 373 #endif
 374
 375 #if defined(USE_AURA)
 376 ui::ContextFactory* ChromeViewsDelegate::GetContextFactory() {
 377   return content::GetContextFactory();
 378 }
 379 #endif
 380
 381 #if defined(OS_WIN)
 382 int ChromeViewsDelegate::GetAppbarAutohideEdges(HMONITOR monitor,
 383                                                 const base::Closure& callback) {
 384   // Initialize the map with EDGE_BOTTOM. This is important, as if we return an
 385   // initial value of 0 (no auto-hide edges) then we'll go fullscreen and
 386   // windows will automatically remove WS_EX_TOPMOST from the appbar resulting
 387   // in us thinking there is no auto-hide edges. By returning at least one edge
 388   // we don't initially go fullscreen until we figure out the real auto-hide
 389   // edges.
 390   if (!appbar_autohide_edge_map_.count(monitor))
 391     appbar_autohide_edge_map_[monitor] = EDGE_BOTTOM;
 392   if (monitor && !in_autohide_edges_callback_) {
 393     base::PostTaskAndReplyWithResult(
 394         content::BrowserThread::GetBlockingPool(),
 395         FROM_HERE,
 396         base::Bind(&GetAppbarAutohideEdgesOnWorkerThread,
 397                    monitor),
 398         base::Bind(&ChromeViewsDelegate::OnGotAppbarAutohideEdges,
 399                    weak_factory_.GetWeakPtr(),
 400                    callback,
 401                    monitor,
 402                    appbar_autohide_edge_map_[monitor]));
 403   }
 404   return appbar_autohide_edge_map_[monitor];
 405 }
 406
 407 void ChromeViewsDelegate::OnGotAppbarAutohideEdges(
 408     const base::Closure& callback,
 409     HMONITOR monitor,
 410     int returned_edges,
 411     int edges) {
 412   appbar_autohide_edge_map_[monitor] = edges;
 413   if (returned_edges == edges)
 414     return;
 415
 416   base::AutoReset<bool> in_callback_setter(&in_autohide_edges_callback_, true);
 417   callback.Run();
 418 }
 419 #endif
 420
 421 #if !defined(USE_AURA) && !defined(USE_CHROMEOS)
 422 views::Widget::InitParams::WindowOpacity
 423 ChromeViewsDelegate::GetOpacityForInitParams(
 424     const views::Widget::InitParams& params) {
 425   return views::Widget::InitParams::OPAQUE_WINDOW;
 426 }
 427 #endif