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 "base/win/windows_version.h"
  28 #include "chrome/browser/app_icon_win.h"
  29 #include "ui/base/win/shell.h"
  30 #endif
  31
  32 #if defined(USE_AURA)
  33 #include "ui/aura/root_window.h"
  34 #endif
  35
  36 #if defined(USE_AURA) && !defined(OS_CHROMEOS)
  37 #include "chrome/browser/ui/host_desktop.h"
  38 #include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
  39 #include "ui/views/widget/native_widget_aura.h"
  40 #endif
  41
  42 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
  43 #include "ui/views/linux_ui/linux_ui.h"
  44 #endif
  45
  46 #if defined(USE_ASH)
  47 #include "ash/shell.h"
  48 #include "ash/wm/window_state.h"
  49 #include "chrome/browser/ui/ash/ash_init.h"
  50 #include "chrome/browser/ui/ash/ash_util.h"
  51 #endif
  52
  53 namespace {
  54
  55 // If the given window has a profile associated with it, use that profile's
  56 // preference service. Otherwise, store and retrieve the data from Local State.
  57 // This function may return NULL if the necessary pref service has not yet
  58 // been initialized.
  59 // TODO(mirandac): This function will also separate windows by profile in a
  60 // multi-profile environment.
  61 PrefService* GetPrefsForWindow(const views::Widget* window) {
  62   Profile* profile = reinterpret_cast<Profile*>(
  63       window->GetNativeWindowProperty(Profile::kProfileKey));
  64   if (!profile) {
  65     // Use local state for windows that have no explicit profile.
  66     return g_browser_process->local_state();
  67   }
  68   return profile->GetPrefs();
  69 }
  70
  71 }  // namespace
  72
  73 ///////////////////////////////////////////////////////////////////////////////
  74 // ChromeViewsDelegate, views::ViewsDelegate implementation:
  75
  76 void ChromeViewsDelegate::SaveWindowPlacement(const views::Widget* window,
  77                                               const std::string& window_name,
  78                                               const gfx::Rect& bounds,
  79                                               ui::WindowShowState show_state) {
  80   PrefService* prefs = GetPrefsForWindow(window);
  81   if (!prefs)
  82     return;
  83
  84   DCHECK(prefs->FindPreference(window_name.c_str()));
  85   DictionaryPrefUpdate update(prefs, window_name.c_str());
  86   base::DictionaryValue* window_preferences = update.Get();
  87   window_preferences->SetInteger("left", bounds.x());
  88   window_preferences->SetInteger("top", bounds.y());
  89   window_preferences->SetInteger("right", bounds.right());
  90   window_preferences->SetInteger("bottom", bounds.bottom());
  91   window_preferences->SetBoolean("maximized",
  92                                  show_state == ui::SHOW_STATE_MAXIMIZED);
  93   gfx::Rect work_area(gfx::Screen::GetScreenFor(window->GetNativeView())->
  94       GetDisplayNearestWindow(window->GetNativeView()).work_area());
  95   window_preferences->SetInteger("work_area_left", work_area.x());
  96   window_preferences->SetInteger("work_area_top", work_area.y());
  97   window_preferences->SetInteger("work_area_right", work_area.right());
  98   window_preferences->SetInteger("work_area_bottom", work_area.bottom());
  99 }
 100
 101 bool ChromeViewsDelegate::GetSavedWindowPlacement(
 102     const views::Widget* widget,
 103     const std::string& window_name,
 104     gfx::Rect* bounds,
 105     ui::WindowShowState* show_state) const {
 106   PrefService* prefs = g_browser_process->local_state();
 107   if (!prefs)
 108     return false;
 109
 110   DCHECK(prefs->FindPreference(window_name.c_str()));
 111   const base::DictionaryValue* dictionary =
 112       prefs->GetDictionary(window_name.c_str());
 113   int left, top, right, bottom;
 114   if (!dictionary || !dictionary->GetInteger("left", &left) ||
 115       !dictionary->GetInteger("top", &top) ||
 116       !dictionary->GetInteger("right", &right) ||
 117       !dictionary->GetInteger("bottom", &bottom))
 118     return false;
 119
 120   bounds->SetRect(left, top, right - left, bottom - top);
 121
 122   bool maximized = false;
 123   if (dictionary)
 124     dictionary->GetBoolean("maximized", &maximized);
 125   *show_state = maximized ? ui::SHOW_STATE_MAXIMIZED : ui::SHOW_STATE_NORMAL;
 126
 127 #if defined(USE_ASH)
 128   // On Ash environment, a window won't span across displays.  Adjust
 129   // the bounds to fit the work area.
 130   gfx::NativeView window = widget->GetNativeView();
 131   if (chrome::GetHostDesktopTypeForNativeView(window) ==
 132       chrome::HOST_DESKTOP_TYPE_ASH) {
 133     gfx::Display display = gfx::Screen::GetScreenFor(window)->
 134         GetDisplayMatching(*bounds);
 135     bounds->AdjustToFit(display.work_area());
 136     ash::wm::GetWindowState(window)->set_minimum_visibility(true);
 137   }
 138 #endif
 139   return true;
 140 }
 141
 142 void ChromeViewsDelegate::NotifyAccessibilityEvent(
 143     views::View* view, ui::AccessibilityTypes::Event event_type) {
 144   AccessibilityEventRouterViews::GetInstance()->HandleAccessibilityEvent(
 145       view, event_type);
 146 }
 147
 148 void ChromeViewsDelegate::NotifyMenuItemFocused(
 149     const base::string16& menu_name,
 150     const base::string16& menu_item_name,
 151     int item_index,
 152     int item_count,
 153     bool has_submenu) {
 154   AccessibilityEventRouterViews::GetInstance()->HandleMenuItemFocused(
 155       menu_name, menu_item_name, item_index, item_count, has_submenu);
 156 }
 157
 158 #if defined(OS_WIN)
 159 HICON ChromeViewsDelegate::GetDefaultWindowIcon() const {
 160   return GetAppIcon();
 161 }
 162
 163 bool ChromeViewsDelegate::IsWindowInMetro(gfx::NativeWindow window) const {
 164   return chrome::IsNativeViewInAsh(window);
 165 }
 166
 167 #elif defined(OS_LINUX) && !defined(OS_CHROMEOS)
 168 gfx::ImageSkia* ChromeViewsDelegate::GetDefaultWindowIcon() const {
 169   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 170   return rb.GetImageSkiaNamed(IDR_PRODUCT_LOGO_64);
 171 }
 172 #endif
 173
 174 views::NonClientFrameView* ChromeViewsDelegate::CreateDefaultNonClientFrameView(
 175     views::Widget* widget) {
 176 #if defined(USE_ASH)
 177   if (chrome::IsNativeViewInAsh(widget->GetNativeView()))
 178     return ash::Shell::GetInstance()->CreateDefaultNonClientFrameView(widget);
 179 #endif
 180   return NULL;
 181 }
 182
 183 void ChromeViewsDelegate::AddRef() {
 184   g_browser_process->AddRefModule();
 185 }
 186
 187 void ChromeViewsDelegate::ReleaseRef() {
 188   g_browser_process->ReleaseModule();
 189 }
 190
 191 content::WebContents* ChromeViewsDelegate::CreateWebContents(
 192     content::BrowserContext* browser_context,
 193     content::SiteInstance* site_instance) {
 194   return NULL;
 195 }
 196
 197 void ChromeViewsDelegate::OnBeforeWidgetInit(
 198     views::Widget::InitParams* params,
 199     views::internal::NativeWidgetDelegate* delegate) {
 200   // We need to determine opacity if it's not already specified.
 201   if (params->opacity == views::Widget::InitParams::INFER_OPACITY)
 202     params->opacity = GetOpacityForInitParams(*params);
 203
 204   // If we already have a native_widget, we don't have to try to come
 205   // up with one.
 206   if (params->native_widget)
 207     return;
 208
 209 #if defined(USE_AURA) && !defined(OS_CHROMEOS)
 210   bool use_non_toplevel_window =
 211       params->parent && params->type != views::Widget::InitParams::TYPE_MENU;
 212
 213 #if defined(OS_WIN)
 214   // On desktop Linux Chrome must run in an environment that supports a variety
 215   // of window managers, some of which do not play nicely with parts of our UI
 216   // that have specific expectations about window sizing and placement. For this
 217   // reason windows opened as top level (params.top_level) are always
 218   // constrained by the browser frame, so we can position them correctly. This
 219   // has some negative side effects, like dialogs being clipped by the browser
 220   // frame, but the side effects are not as bad as the poor window manager
 221   // interactions. On Windows however these WM interactions are not an issue, so
 222   // we open windows requested as top_level as actual top level windows on the
 223   // desktop.
 224   use_non_toplevel_window = use_non_toplevel_window &&
 225       (!params->top_level ||
 226        chrome::GetHostDesktopTypeForNativeView(params->parent) !=
 227           chrome::HOST_DESKTOP_TYPE_NATIVE);
 228
 229   if (!ui::win::IsAeroGlassEnabled()) {
 230     // If we don't have composition (either because Glass is not enabled or
 231     // because it was disabled at the command line), anything that requires
 232     // transparency will be broken with a toplevel window, so force the use of
 233     // a non toplevel window.
 234     if (params->opacity == views::Widget::InitParams::TRANSLUCENT_WINDOW &&
 235         params->type != views::Widget::InitParams::TYPE_MENU)
 236       use_non_toplevel_window = true;
 237   } else {
 238     // If we're on Vista+ with composition enabled, then we can use toplevel
 239     // windows for most things (they get blended via WS_EX_COMPOSITED, which
 240     // allows for animation effects, but also exceeding the bounds of the parent
 241     // window).
 242     if (chrome::GetActiveDesktop() != chrome::HOST_DESKTOP_TYPE_ASH &&
 243         params->parent &&
 244         params->type != views::Widget::InitParams::TYPE_CONTROL &&
 245         params->type != views::Widget::InitParams::TYPE_WINDOW) {
 246       // When we set this to false, we get a DesktopNativeWidgetAura from the
 247       // default case (not handled in this function).
 248       use_non_toplevel_window = false;
 249     }
 250   }
 251 #endif  // OS_WIN
 252 #endif  // USE_AURA
 253
 254 #if defined(OS_CHROMEOS)
 255   // When we are doing straight chromeos builds, we still need to handle the
 256   // toplevel window case.
 257   // There may be a few remaining widgets in Chrome OS that are not top level,
 258   // but have neither a context nor a parent. Provide a fallback context so
 259   // users don't crash. Developers will hit the DCHECK and should provide a
 260   // context.
 261   if (params->context)
 262     params->context = params->context->GetRootWindow();
 263   DCHECK(params->parent || params->context || params->top_level)
 264       << "Please provide a parent or context for this widget.";
 265   if (!params->parent && !params->context)
 266     params->context = ash::Shell::GetPrimaryRootWindow();
 267 #elif defined(USE_AURA)
 268   // While the majority of the time, context wasn't plumbed through due to the
 269   // existence of a global WindowTreeClient, if this window is a toplevel, it's
 270   // possible that there is no contextual state that we can use.
 271   if (params->parent == NULL && params->context == NULL && params->top_level) {
 272     // We need to make a decision about where to place this window based on the
 273     // desktop type.
 274     switch (chrome::GetActiveDesktop()) {
 275       case chrome::HOST_DESKTOP_TYPE_NATIVE:
 276         // If we're native, we should give this window its own toplevel desktop
 277         // widget.
 278         params->native_widget = new views::DesktopNativeWidgetAura(delegate);
 279         break;
 280 #if defined(USE_ASH)
 281       case chrome::HOST_DESKTOP_TYPE_ASH:
 282         // If we're in ash, give this window the context of the main monitor.
 283         params->context = ash::Shell::GetPrimaryRootWindow();
 284         break;
 285 #endif
 286       default:
 287         NOTREACHED();
 288     }
 289   } else if (use_non_toplevel_window) {
 290     params->native_widget = new views::NativeWidgetAura(delegate);
 291   } else if (params->type != views::Widget::InitParams::TYPE_TOOLTIP) {
 292     // TODO(erg): Once we've threaded context to everywhere that needs it, we
 293     // should remove this check here.
 294     gfx::NativeView to_check =
 295         params->context ? params->context : params->parent;
 296     if (chrome::GetHostDesktopTypeForNativeView(to_check) ==
 297         chrome::HOST_DESKTOP_TYPE_NATIVE) {
 298       params->native_widget = new views::DesktopNativeWidgetAura(delegate);
 299     }
 300   }
 301 #endif
 302 }
 303
 304 base::TimeDelta
 305 ChromeViewsDelegate::GetDefaultTextfieldObscuredRevealDuration() {
 306   return base::TimeDelta();
 307 }
 308
 309 bool ChromeViewsDelegate::WindowManagerProvidesTitleBar(bool maximized) {
 310 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 311   // On Ubuntu Unity, the system always provides a title bar for maximized
 312   // windows.
 313   views::LinuxUI* ui = views::LinuxUI::instance();
 314   return maximized && ui && ui->UnityIsRunning();
 315 #endif
 316
 317   return false;
 318 }
 319
 320 #if !defined(USE_AURA) && !defined(USE_CHROMEOS)
 321 views::Widget::InitParams::WindowOpacity
 322 ChromeViewsDelegate::GetOpacityForInitParams(
 323     const views::Widget::InitParams& params) {
 324   return views::Widget::InitParams::OPAQUE_WINDOW;
 325 }
 326 #endif