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_ash.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 62namespace { 63 64Profile* 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. 77PrefService* 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) 87bool MonitorHasTopmostAutohideTaskbarForEdge(UINT edge, HMONITOR monitor) { 88 APPBARDATA taskbar_data = { sizeof(APPBARDATA), NULL, 0, edge }; 89 // MSDN documents an ABM_GETAUTOHIDEBAREX, which supposedly takes a monitor 90 // rect and returns autohide bars on that monitor. This sounds like a good 91 // idea for multi-monitor systems. Unfortunately, it appears to not work at 92 // least some of the time (erroneously returning NULL) and there's almost no 93 // online documentation or other sample code using it that suggests ways to 94 // address this problem. So we just use ABM_GETAUTOHIDEBAR and hope the user 95 // only cares about autohide bars on the monitor with the primary taskbar. 96 // 97 // NOTE: This call spins a nested message loop. 98 HWND taskbar = reinterpret_cast<HWND>(SHAppBarMessage(ABM_GETAUTOHIDEBAR, 99 &taskbar_data)); 100 return ::IsWindow(taskbar) && 101 (MonitorFromWindow(taskbar, MONITOR_DEFAULTTONULL) == monitor) && 102 (GetWindowLong(taskbar, GWL_EXSTYLE) & WS_EX_TOPMOST); 103} 104 105int GetAppbarAutohideEdgesOnWorkerThread(HMONITOR monitor) { 106 DCHECK(monitor); 107 108 int edges = 0; 109 if (MonitorHasTopmostAutohideTaskbarForEdge(ABE_LEFT, monitor)) 110 edges |= views::ViewsDelegate::EDGE_LEFT; 111 if (MonitorHasTopmostAutohideTaskbarForEdge(ABE_TOP, monitor)) 112 edges |= views::ViewsDelegate::EDGE_TOP; 113 if (MonitorHasTopmostAutohideTaskbarForEdge(ABE_RIGHT, monitor)) 114 edges |= views::ViewsDelegate::EDGE_RIGHT; 115 if (MonitorHasTopmostAutohideTaskbarForEdge(ABE_BOTTOM, monitor)) 116 edges |= views::ViewsDelegate::EDGE_BOTTOM; 117 return edges; 118} 119#endif 120 121} // namespace 122 123 124// ChromeViewsDelegate -------------------------------------------------------- 125 126#if defined(OS_WIN) 127ChromeViewsDelegate::ChromeViewsDelegate() 128 : weak_factory_(this), 129 in_autohide_edges_callback_(false) { 130#else 131ChromeViewsDelegate::ChromeViewsDelegate() { 132#endif 133} 134 135ChromeViewsDelegate::~ChromeViewsDelegate() { 136} 137 138void ChromeViewsDelegate::SaveWindowPlacement(const views::Widget* window, 139 const std::string& window_name, 140 const gfx::Rect& bounds, 141 ui::WindowShowState show_state) { 142 PrefService* prefs = GetPrefsForWindow(window); 143 if (!prefs) 144 return; 145 146 DCHECK(prefs->FindPreference(window_name.c_str())); 147 DictionaryPrefUpdate update(prefs, window_name.c_str()); 148 base::DictionaryValue* window_preferences = update.Get(); 149 window_preferences->SetInteger("left", bounds.x()); 150 window_preferences->SetInteger("top", bounds.y()); 151 window_preferences->SetInteger("right", bounds.right()); 152 window_preferences->SetInteger("bottom", bounds.bottom()); 153 window_preferences->SetBoolean("maximized", 154 show_state == ui::SHOW_STATE_MAXIMIZED); 155 gfx::Rect work_area(gfx::Screen::GetScreenFor(window->GetNativeView())-> 156 GetDisplayNearestWindow(window->GetNativeView()).work_area()); 157 window_preferences->SetInteger("work_area_left", work_area.x()); 158 window_preferences->SetInteger("work_area_top", work_area.y()); 159 window_preferences->SetInteger("work_area_right", work_area.right()); 160 window_preferences->SetInteger("work_area_bottom", work_area.bottom()); 161} 162 163bool ChromeViewsDelegate::GetSavedWindowPlacement( 164 const views::Widget* widget, 165 const std::string& window_name, 166 gfx::Rect* bounds, 167 ui::WindowShowState* show_state) const { 168 PrefService* prefs = g_browser_process->local_state(); 169 if (!prefs) 170 return false; 171 172 DCHECK(prefs->FindPreference(window_name.c_str())); 173 const base::DictionaryValue* dictionary = 174 prefs->GetDictionary(window_name.c_str()); 175 int left, top, right, bottom; 176 if (!dictionary || !dictionary->GetInteger("left", &left) || 177 !dictionary->GetInteger("top", &top) || 178 !dictionary->GetInteger("right", &right) || 179 !dictionary->GetInteger("bottom", &bottom)) 180 return false; 181 182 bounds->SetRect(left, top, right - left, bottom - top); 183 184 bool maximized = false; 185 if (dictionary) 186 dictionary->GetBoolean("maximized", &maximized); 187 *show_state = maximized ? ui::SHOW_STATE_MAXIMIZED : ui::SHOW_STATE_NORMAL; 188 189#if defined(USE_ASH) 190 // On Ash environment, a window won't span across displays. Adjust 191 // the bounds to fit the work area. 192 gfx::NativeView window = widget->GetNativeView(); 193 if (chrome::GetHostDesktopTypeForNativeView(window) == 194 chrome::HOST_DESKTOP_TYPE_ASH) { 195 gfx::Display display = gfx::Screen::GetScreenFor(window)-> 196 GetDisplayMatching(*bounds); 197 bounds->AdjustToFit(display.work_area()); 198 ash::wm::GetWindowState(window)->set_minimum_visibility(true); 199 } 200#endif 201 return true; 202} 203 204void ChromeViewsDelegate::NotifyAccessibilityEvent( 205 views::View* view, ui::AXEvent event_type) { 206 AccessibilityEventRouterViews::GetInstance()->HandleAccessibilityEvent( 207 view, event_type); 208 209#if defined(USE_ASH) 210 AutomationManagerAsh::GetInstance()->HandleEvent( 211 GetProfileForWindow(view->GetWidget()), view, event_type); 212#endif 213} 214 215void ChromeViewsDelegate::NotifyMenuItemFocused( 216 const base::string16& menu_name, 217 const base::string16& menu_item_name, 218 int item_index, 219 int item_count, 220 bool has_submenu) { 221 AccessibilityEventRouterViews::GetInstance()->HandleMenuItemFocused( 222 menu_name, menu_item_name, item_index, item_count, has_submenu); 223} 224 225#if defined(OS_WIN) 226HICON ChromeViewsDelegate::GetDefaultWindowIcon() const { 227 return GetAppIcon(); 228} 229 230bool ChromeViewsDelegate::IsWindowInMetro(gfx::NativeWindow window) const { 231 return chrome::IsNativeViewInAsh(window); 232} 233 234#elif defined(OS_LINUX) && !defined(OS_CHROMEOS) 235gfx::ImageSkia* ChromeViewsDelegate::GetDefaultWindowIcon() const { 236 ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance(); 237 return rb.GetImageSkiaNamed(IDR_PRODUCT_LOGO_64); 238} 239#endif 240 241#if defined(USE_ASH) 242views::NonClientFrameView* ChromeViewsDelegate::CreateDefaultNonClientFrameView( 243 views::Widget* widget) { 244 return chrome::IsNativeViewInAsh(widget->GetNativeView()) ? 245 ash::Shell::GetInstance()->CreateDefaultNonClientFrameView(widget) : NULL; 246} 247#endif 248 249void ChromeViewsDelegate::AddRef() { 250 g_browser_process->AddRefModule(); 251} 252 253void ChromeViewsDelegate::ReleaseRef() { 254 g_browser_process->ReleaseModule(); 255} 256 257void ChromeViewsDelegate::OnBeforeWidgetInit( 258 views::Widget::InitParams* params, 259 views::internal::NativeWidgetDelegate* delegate) { 260 // We need to determine opacity if it's not already specified. 261 if (params->opacity == views::Widget::InitParams::INFER_OPACITY) 262 params->opacity = GetOpacityForInitParams(*params); 263 264 // If we already have a native_widget, we don't have to try to come 265 // up with one. 266 if (params->native_widget) 267 return; 268 269#if defined(USE_AURA) && !defined(OS_CHROMEOS) 270 bool use_non_toplevel_window = 271 params->parent && 272 params->type != views::Widget::InitParams::TYPE_MENU && 273 params->type != views::Widget::InitParams::TYPE_TOOLTIP; 274 275#if defined(OS_WIN) 276 // On desktop Linux Chrome must run in an environment that supports a variety 277 // of window managers, some of which do not play nicely with parts of our UI 278 // that have specific expectations about window sizing and placement. For this 279 // reason windows opened as top level (!params.child) are always constrained 280 // by the browser frame, so we can position them correctly. This has some 281 // negative side effects, like dialogs being clipped by the browser frame, but 282 // the side effects are not as bad as the poor window manager interactions. On 283 // Windows however these WM interactions are not an issue, so we open windows 284 // requested as top_level as actual top level windows on the desktop. 285 use_non_toplevel_window = use_non_toplevel_window && 286 (params->child || 287 chrome::GetHostDesktopTypeForNativeView(params->parent) != 288 chrome::HOST_DESKTOP_TYPE_NATIVE); 289 290 if (!ui::win::IsAeroGlassEnabled()) { 291 // If we don't have composition (either because Glass is not enabled or 292 // because it was disabled at the command line), anything that requires 293 // transparency will be broken with a toplevel window, so force the use of 294 // a non toplevel window. 295 if (params->opacity == views::Widget::InitParams::TRANSLUCENT_WINDOW && 296 params->type != views::Widget::InitParams::TYPE_MENU) 297 use_non_toplevel_window = true; 298 } else { 299 // If we're on Vista+ with composition enabled, then we can use toplevel 300 // windows for most things (they get blended via WS_EX_COMPOSITED, which 301 // allows for animation effects, but also exceeding the bounds of the parent 302 // window). 303 if (chrome::GetActiveDesktop() != chrome::HOST_DESKTOP_TYPE_ASH && 304 params->parent && 305 params->type != views::Widget::InitParams::TYPE_CONTROL && 306 params->type != views::Widget::InitParams::TYPE_WINDOW) { 307 // When we set this to false, we get a DesktopNativeWidgetAura from the 308 // default case (not handled in this function). 309 use_non_toplevel_window = false; 310 } 311 } 312#endif // OS_WIN 313#endif // USE_AURA 314 315#if defined(OS_CHROMEOS) 316 // When we are doing straight chromeos builds, we still need to handle the 317 // toplevel window case. 318 // There may be a few remaining widgets in Chrome OS that are not top level, 319 // but have neither a context nor a parent. Provide a fallback context so 320 // users don't crash. Developers will hit the DCHECK and should provide a 321 // context. 322 if (params->context) 323 params->context = params->context->GetRootWindow(); 324 DCHECK(params->parent || params->context || !params->child) 325 << "Please provide a parent or context for this widget."; 326 if (!params->parent && !params->context) 327 params->context = ash::Shell::GetPrimaryRootWindow(); 328#elif defined(USE_AURA) 329 // While the majority of the time, context wasn't plumbed through due to the 330 // existence of a global WindowTreeClient, if this window is toplevel, it's 331 // possible that there is no contextual state that we can use. 332 if (params->parent == NULL && params->context == NULL && !params->child) { 333 // We need to make a decision about where to place this window based on the 334 // desktop type. 335 switch (chrome::GetActiveDesktop()) { 336 case chrome::HOST_DESKTOP_TYPE_NATIVE: 337 // If we're native, we should give this window its own toplevel desktop 338 // widget. 339 params->native_widget = new views::DesktopNativeWidgetAura(delegate); 340 break; 341#if defined(USE_ASH) 342 case chrome::HOST_DESKTOP_TYPE_ASH: 343 // If we're in ash, give this window the context of the main monitor. 344 params->context = ash::Shell::GetPrimaryRootWindow(); 345 break; 346#endif 347 default: 348 NOTREACHED(); 349 } 350 } else if (use_non_toplevel_window) { 351 views::NativeWidgetAura* native_widget = 352 new views::NativeWidgetAura(delegate); 353 if (params->parent) { 354 Profile* parent_profile = reinterpret_cast<Profile*>( 355 params->parent->GetNativeWindowProperty(Profile::kProfileKey)); 356 native_widget->SetNativeWindowProperty(Profile::kProfileKey, 357 parent_profile); 358 } 359 params->native_widget = native_widget; 360 } else { 361 // TODO(erg): Once we've threaded context to everywhere that needs it, we 362 // should remove this check here. 363 gfx::NativeView to_check = 364 params->context ? params->context : params->parent; 365 if (chrome::GetHostDesktopTypeForNativeView(to_check) == 366 chrome::HOST_DESKTOP_TYPE_NATIVE) { 367 params->native_widget = new views::DesktopNativeWidgetAura(delegate); 368 } 369 } 370#endif 371} 372 373#if defined(OS_LINUX) && !defined(OS_CHROMEOS) 374bool ChromeViewsDelegate::WindowManagerProvidesTitleBar(bool maximized) { 375 // On Ubuntu Unity, the system always provides a title bar for maximized 376 // windows. 377 views::LinuxUI* ui = views::LinuxUI::instance(); 378 return maximized && ui && ui->UnityIsRunning(); 379} 380#endif 381 382#if defined(USE_AURA) 383ui::ContextFactory* ChromeViewsDelegate::GetContextFactory() { 384 return content::GetContextFactory(); 385} 386#endif 387 388#if defined(OS_WIN) 389int ChromeViewsDelegate::GetAppbarAutohideEdges(HMONITOR monitor, 390 const base::Closure& callback) { 391 // Initialize the map with EDGE_BOTTOM. This is important, as if we return an 392 // initial value of 0 (no auto-hide edges) then we'll go fullscreen and 393 // windows will automatically remove WS_EX_TOPMOST from the appbar resulting 394 // in us thinking there is no auto-hide edges. By returning at least one edge 395 // we don't initially go fullscreen until we figure out the real auto-hide 396 // edges. 397 if (!appbar_autohide_edge_map_.count(monitor)) 398 appbar_autohide_edge_map_[monitor] = EDGE_BOTTOM; 399 if (monitor && !in_autohide_edges_callback_) { 400 base::PostTaskAndReplyWithResult( 401 content::BrowserThread::GetBlockingPool(), 402 FROM_HERE, 403 base::Bind(&GetAppbarAutohideEdgesOnWorkerThread, 404 monitor), 405 base::Bind(&ChromeViewsDelegate::OnGotAppbarAutohideEdges, 406 weak_factory_.GetWeakPtr(), 407 callback, 408 monitor, 409 appbar_autohide_edge_map_[monitor])); 410 } 411 return appbar_autohide_edge_map_[monitor]; 412} 413 414void ChromeViewsDelegate::OnGotAppbarAutohideEdges( 415 const base::Closure& callback, 416 HMONITOR monitor, 417 int returned_edges, 418 int edges) { 419 appbar_autohide_edge_map_[monitor] = edges; 420 if (returned_edges == edges) 421 return; 422 423 base::AutoReset<bool> in_callback_setter(&in_autohide_edges_callback_, true); 424 callback.Run(); 425} 426#endif 427 428#if !defined(USE_AURA) && !defined(USE_CHROMEOS) 429views::Widget::InitParams::WindowOpacity 430ChromeViewsDelegate::GetOpacityForInitParams( 431 const views::Widget::InitParams& params) { 432 return views::Widget::InitParams::OPAQUE_WINDOW; 433} 434#endif 435