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/strings/string_util.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "base/time/time.h"
  12 #include "chrome/browser/browser_process.h"
  13 #include "chrome/browser/prefs/scoped_user_pref_update.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 "ui/base/ui_base_switches.h"
  18 #include "ui/gfx/rect.h"
  19 #include "ui/gfx/screen.h"
  20 #include "ui/views/widget/native_widget.h"
  21 #include "ui/views/widget/widget.h"
  22
  23 #if defined(OS_WIN)
  24 #include <dwmapi.h>
  25 #include "base/win/windows_version.h"
  26 #include "chrome/browser/app_icon_win.h"
  27 #include "ui/base/win/shell.h"
  28 #endif
  29
  30 #if defined(USE_AURA)
  31 #include "ui/aura/root_window.h"
  32 #endif
  33
  34 #if defined(USE_AURA) && !defined(OS_CHROMEOS)
  35 #include "chrome/browser/ui/host_desktop.h"
  36 #include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
  37 #include "ui/views/widget/native_widget_aura.h"
  38 #endif
  39
  40 #if defined(USE_ASH)
  41 #include "ash/shell.h"
  42 #include "chrome/browser/ui/ash/ash_init.h"
  43 #include "chrome/browser/ui/ash/ash_util.h"
  44 #endif
  45
  46 namespace {
  47
  48 // If the given window has a profile associated with it, use that profile's
  49 // preference service. Otherwise, store and retrieve the data from Local State.
  50 // This function may return NULL if the necessary pref service has not yet
  51 // been initialized.
  52 // TODO(mirandac): This function will also separate windows by profile in a
  53 // multi-profile environment.
  54 PrefService* GetPrefsForWindow(const views::Widget* window) {
  55   Profile* profile = reinterpret_cast<Profile*>(
  56       window->GetNativeWindowProperty(Profile::kProfileKey));
  57   if (!profile) {
  58     // Use local state for windows that have no explicit profile.
  59     return g_browser_process->local_state();
  60   }
  61   return profile->GetPrefs();
  62 }
  63
  64 }  // namespace
  65
  66 ///////////////////////////////////////////////////////////////////////////////
  67 // ChromeViewsDelegate, views::ViewsDelegate implementation:
  68
  69 void ChromeViewsDelegate::SaveWindowPlacement(const views::Widget* window,
  70                                               const std::string& window_name,
  71                                               const gfx::Rect& bounds,
  72                                               ui::WindowShowState show_state) {
  73   PrefService* prefs = GetPrefsForWindow(window);
  74   if (!prefs)
  75     return;
  76
  77   DCHECK(prefs->FindPreference(window_name.c_str()));
  78   DictionaryPrefUpdate update(prefs, window_name.c_str());
  79   DictionaryValue* window_preferences = update.Get();
  80   window_preferences->SetInteger("left", bounds.x());
  81   window_preferences->SetInteger("top", bounds.y());
  82   window_preferences->SetInteger("right", bounds.right());
  83   window_preferences->SetInteger("bottom", bounds.bottom());
  84   window_preferences->SetBoolean("maximized",
  85                                  show_state == ui::SHOW_STATE_MAXIMIZED);
  86   gfx::Rect work_area(gfx::Screen::GetScreenFor(window->GetNativeView())->
  87       GetDisplayNearestWindow(window->GetNativeView()).work_area());
  88   window_preferences->SetInteger("work_area_left", work_area.x());
  89   window_preferences->SetInteger("work_area_top", work_area.y());
  90   window_preferences->SetInteger("work_area_right", work_area.right());
  91   window_preferences->SetInteger("work_area_bottom", work_area.bottom());
  92 }
  93
  94 bool ChromeViewsDelegate::GetSavedWindowPlacement(
  95     const std::string& window_name,
  96     gfx::Rect* bounds,
  97     ui::WindowShowState* show_state) const {
  98   PrefService* prefs = g_browser_process->local_state();
  99   if (!prefs)
 100     return false;
 101
 102   DCHECK(prefs->FindPreference(window_name.c_str()));
 103   const DictionaryValue* dictionary = prefs->GetDictionary(window_name.c_str());
 104   int left, top, right, bottom;
 105   if (!dictionary || !dictionary->GetInteger("left", &left) ||
 106       !dictionary->GetInteger("top", &top) ||
 107       !dictionary->GetInteger("right", &right) ||
 108       !dictionary->GetInteger("bottom", &bottom))
 109     return false;
 110
 111   bounds->SetRect(left, top, right - left, bottom - top);
 112
 113   bool maximized = false;
 114   if (dictionary)
 115     dictionary->GetBoolean("maximized", &maximized);
 116   *show_state = maximized ? ui::SHOW_STATE_MAXIMIZED : ui::SHOW_STATE_NORMAL;
 117
 118   return true;
 119 }
 120
 121 void ChromeViewsDelegate::NotifyAccessibilityEvent(
 122     views::View* view, ui::AccessibilityTypes::Event event_type) {
 123   AccessibilityEventRouterViews::GetInstance()->HandleAccessibilityEvent(
 124       view, event_type);
 125 }
 126
 127 void ChromeViewsDelegate::NotifyMenuItemFocused(const string16& menu_name,
 128                                                 const string16& menu_item_name,
 129                                                 int item_index,
 130                                                 int item_count,
 131                                                 bool has_submenu) {
 132   AccessibilityEventRouterViews::GetInstance()->HandleMenuItemFocused(
 133       menu_name, menu_item_name, item_index, item_count, has_submenu);
 134 }
 135
 136 #if defined(OS_WIN)
 137 HICON ChromeViewsDelegate::GetDefaultWindowIcon() const {
 138   return GetAppIcon();
 139 }
 140 #endif
 141
 142 views::NonClientFrameView* ChromeViewsDelegate::CreateDefaultNonClientFrameView(
 143     views::Widget* widget) {
 144 #if defined(USE_ASH)
 145   if (chrome::IsNativeViewInAsh(widget->GetNativeView()))
 146     return ash::Shell::GetInstance()->CreateDefaultNonClientFrameView(widget);
 147 #endif
 148   return NULL;
 149 }
 150
 151 bool ChromeViewsDelegate::UseTransparentWindows() const {
 152 #if defined(USE_ASH)
 153   // TODO(scottmg): http://crbug.com/133312. This needs context to determine
 154   // if it's desktop or ash.
 155 #if defined(OS_CHROMEOS)
 156   return true;
 157 #else
 158   NOTIMPLEMENTED();
 159   return false;
 160 #endif
 161 #else
 162   return false;
 163 #endif
 164 }
 165
 166 void ChromeViewsDelegate::AddRef() {
 167   g_browser_process->AddRefModule();
 168 }
 169
 170 void ChromeViewsDelegate::ReleaseRef() {
 171   g_browser_process->ReleaseModule();
 172 }
 173
 174 content::WebContents* ChromeViewsDelegate::CreateWebContents(
 175     content::BrowserContext* browser_context,
 176     content::SiteInstance* site_instance) {
 177   return NULL;
 178 }
 179
 180 void ChromeViewsDelegate::OnBeforeWidgetInit(
 181     views::Widget::InitParams* params,
 182     views::internal::NativeWidgetDelegate* delegate) {
 183   // If we already have a native_widget, we don't have to try to come
 184   // up with one.
 185   if (params->native_widget)
 186     return;
 187
 188 #if defined(USE_AURA) && !defined(OS_CHROMEOS)
 189   bool use_non_toplevel_window =
 190       params->parent && params->type != views::Widget::InitParams::TYPE_MENU;
 191
 192 #if defined(OS_WIN)
 193   // On desktop Linux Chrome must run in an environment that supports a variety
 194   // of window managers, some of which do not play nicely with parts of our UI
 195   // that have specific expectations about window sizing and placement. For this
 196   // reason windows opened as top level (params.top_level) are always
 197   // constrained by the browser frame, so we can position them correctly. This
 198   // has some negative side effects, like dialogs being clipped by the browser
 199   // frame, but the side effects are not as bad as the poor window manager
 200   // interactions. On Windows however these WM interactions are not an issue, so
 201   // we open windows requested as top_level as actual top level windows on the
 202   // desktop.
 203   use_non_toplevel_window = use_non_toplevel_window &&
 204       (!params->top_level ||
 205        chrome::GetHostDesktopTypeForNativeView(params->parent) !=
 206           chrome::HOST_DESKTOP_TYPE_NATIVE);
 207
 208   if (!ui::win::IsAeroGlassEnabled()) {
 209     // If we don't have composition (either because Glass is not enabled or
 210     // because it was disabled at the command line), anything that requires
 211     // transparency will be broken with a toplevel window, so force the use of
 212     // a non toplevel window.
 213     if (params->opacity == views::Widget::InitParams::TRANSLUCENT_WINDOW &&
 214         params->type != views::Widget::InitParams::TYPE_MENU)
 215       use_non_toplevel_window = true;
 216   } else {
 217     // If we're on Vista+ with composition enabled, then we can use toplevel
 218     // windows for most things (they get blended via WS_EX_COMPOSITED, which
 219     // allows for animation effects, but also exceeding the bounds of the parent
 220     // window).
 221     if (chrome::GetActiveDesktop() != chrome::HOST_DESKTOP_TYPE_ASH &&
 222         params->parent &&
 223         params->type != views::Widget::InitParams::TYPE_CONTROL &&
 224         params->type != views::Widget::InitParams::TYPE_WINDOW) {
 225       // When we set this to false, we get a DesktopNativeWidgetAura from the
 226       // default case (not handled in this function).
 227       use_non_toplevel_window = false;
 228     }
 229   }
 230 #endif  // OS_WIN
 231 #endif  // USE_AURA
 232
 233 #if defined(OS_CHROMEOS)
 234   // When we are doing straight chromeos builds, we still need to handle the
 235   // toplevel window case.
 236   // There may be a few remaining widgets in Chrome OS that are not top level,
 237   // but have neither a context nor a parent. Provide a fallback context so
 238   // users don't crash. Developers will hit the DCHECK and should provide a
 239   // context.
 240   DCHECK(params->parent || params->context || params->top_level)
 241       << "Please provide a parent or context for this widget.";
 242   if (!params->parent && !params->context)
 243     params->context = ash::Shell::GetPrimaryRootWindow();
 244 #elif defined(USE_AURA)
 245   // While the majority of the time, context wasn't plumbed through due to the
 246   // existence of a global StackingClient, if this window is a toplevel, it's
 247   // possible that there is no contextual state that we can use.
 248   if (params->parent == NULL && params->context == NULL && params->top_level) {
 249     // We need to make a decision about where to place this window based on the
 250     // desktop type.
 251     switch (chrome::GetActiveDesktop()) {
 252       case chrome::HOST_DESKTOP_TYPE_NATIVE:
 253         // If we're native, we should give this window its own toplevel desktop
 254         // widget.
 255         params->native_widget = new views::DesktopNativeWidgetAura(delegate);
 256         break;
 257 #if defined(USE_ASH)
 258       case chrome::HOST_DESKTOP_TYPE_ASH:
 259         // If we're in ash, give this window the context of the main monitor.
 260         params->context = ash::Shell::GetPrimaryRootWindow();
 261         break;
 262 #endif
 263       default:
 264         NOTREACHED();
 265     }
 266   } else if (use_non_toplevel_window) {
 267     params->native_widget = new views::NativeWidgetAura(delegate);
 268   } else if (params->type != views::Widget::InitParams::TYPE_TOOLTIP) {
 269     // TODO(erg): Once we've threaded context to everywhere that needs it, we
 270     // should remove this check here.
 271     gfx::NativeView to_check =
 272         params->context ? params->context : params->parent;
 273     if (chrome::GetHostDesktopTypeForNativeView(to_check) ==
 274         chrome::HOST_DESKTOP_TYPE_NATIVE) {
 275       params->native_widget = new views::DesktopNativeWidgetAura(delegate);
 276     }
 277   }
 278 #endif
 279 }
 280
 281 #if !defined(OS_CHROMEOS)
 282 base::TimeDelta
 283 ChromeViewsDelegate::GetDefaultTextfieldObscuredRevealDuration() {
 284   return base::TimeDelta();
 285 }
 286 #endif