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