chrome_views_delegate.cc revision f2477e01787aa58f445919b809d89e252beef54f 
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(USE_ASH)
43#include "ash/shell.h"
44#include "ash/wm/window_state.h"
45#include "chrome/browser/ui/ash/ash_init.h"
46#include "chrome/browser/ui/ash/ash_util.h"
47#endif
48
49namespace {
50
51// If the given window has a profile associated with it, use that profile's
52// preference service. Otherwise, store and retrieve the data from Local State.
53// This function may return NULL if the necessary pref service has not yet
54// been initialized.
55// TODO(mirandac): This function will also separate windows by profile in a
56// multi-profile environment.
57PrefService* GetPrefsForWindow(const views::Widget* window) {
58  Profile* profile = reinterpret_cast<Profile*>(
59      window->GetNativeWindowProperty(Profile::kProfileKey));
60  if (!profile) {
61    // Use local state for windows that have no explicit profile.
62    return g_browser_process->local_state();
63  }
64  return profile->GetPrefs();
65}
66
67}  // namespace
68
69///////////////////////////////////////////////////////////////////////////////
70// ChromeViewsDelegate, views::ViewsDelegate implementation:
71
72void ChromeViewsDelegate::SaveWindowPlacement(const views::Widget* window,
73                                              const std::string& window_name,
74                                              const gfx::Rect& bounds,
75                                              ui::WindowShowState show_state) {
76  PrefService* prefs = GetPrefsForWindow(window);
77  if (!prefs)
78    return;
79
80  DCHECK(prefs->FindPreference(window_name.c_str()));
81  DictionaryPrefUpdate update(prefs, window_name.c_str());
82  DictionaryValue* window_preferences = update.Get();
83  window_preferences->SetInteger("left", bounds.x());
84  window_preferences->SetInteger("top", bounds.y());
85  window_preferences->SetInteger("right", bounds.right());
86  window_preferences->SetInteger("bottom", bounds.bottom());
87  window_preferences->SetBoolean("maximized",
88                                 show_state == ui::SHOW_STATE_MAXIMIZED);
89  gfx::Rect work_area(gfx::Screen::GetScreenFor(window->GetNativeView())->
90      GetDisplayNearestWindow(window->GetNativeView()).work_area());
91  window_preferences->SetInteger("work_area_left", work_area.x());
92  window_preferences->SetInteger("work_area_top", work_area.y());
93  window_preferences->SetInteger("work_area_right", work_area.right());
94  window_preferences->SetInteger("work_area_bottom", work_area.bottom());
95}
96
97bool ChromeViewsDelegate::GetSavedWindowPlacement(
98    const views::Widget* widget,
99    const std::string& window_name,
100    gfx::Rect* bounds,
101    ui::WindowShowState* show_state) const {
102  PrefService* prefs = g_browser_process->local_state();
103  if (!prefs)
104    return false;
105
106  DCHECK(prefs->FindPreference(window_name.c_str()));
107  const DictionaryValue* dictionary = prefs->GetDictionary(window_name.c_str());
108  int left, top, right, bottom;
109  if (!dictionary || !dictionary->GetInteger("left", &left) ||
110      !dictionary->GetInteger("top", &top) ||
111      !dictionary->GetInteger("right", &right) ||
112      !dictionary->GetInteger("bottom", &bottom))
113    return false;
114
115  bounds->SetRect(left, top, right - left, bottom - top);
116
117  bool maximized = false;
118  if (dictionary)
119    dictionary->GetBoolean("maximized", &maximized);
120  *show_state = maximized ? ui::SHOW_STATE_MAXIMIZED : ui::SHOW_STATE_NORMAL;
121
122#if defined(USE_ASH)
123  // On Ash environment, a window won't span across displays.  Adjust
124  // the bounds to fit the work area.
125  gfx::NativeView window = widget->GetNativeView();
126  if (chrome::GetHostDesktopTypeForNativeView(window) ==
127      chrome::HOST_DESKTOP_TYPE_ASH) {
128    gfx::Display display = gfx::Screen::GetScreenFor(window)->
129        GetDisplayMatching(*bounds);
130    bounds->AdjustToFit(display.work_area());
131    ash::wm::GetWindowState(window)->set_minimum_visibility(true);
132  }
133#endif
134  return true;
135}
136
137void ChromeViewsDelegate::NotifyAccessibilityEvent(
138    views::View* view, ui::AccessibilityTypes::Event event_type) {
139  AccessibilityEventRouterViews::GetInstance()->HandleAccessibilityEvent(
140      view, event_type);
141}
142
143void ChromeViewsDelegate::NotifyMenuItemFocused(const string16& menu_name,
144                                                const string16& menu_item_name,
145                                                int item_index,
146                                                int item_count,
147                                                bool has_submenu) {
148  AccessibilityEventRouterViews::GetInstance()->HandleMenuItemFocused(
149      menu_name, menu_item_name, item_index, item_count, has_submenu);
150}
151
152#if defined(OS_WIN)
153HICON ChromeViewsDelegate::GetDefaultWindowIcon() const {
154  return GetAppIcon();
155}
156#elif defined(OS_LINUX) && !defined(OS_CHROMEOS)
157gfx::ImageSkia* ChromeViewsDelegate::GetDefaultWindowIcon() const {
158  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
159  return rb.GetImageSkiaNamed(IDR_PRODUCT_LOGO_64);
160}
161#endif
162
163views::NonClientFrameView* ChromeViewsDelegate::CreateDefaultNonClientFrameView(
164    views::Widget* widget) {
165#if defined(USE_ASH)
166  if (chrome::IsNativeViewInAsh(widget->GetNativeView()))
167    return ash::Shell::GetInstance()->CreateDefaultNonClientFrameView(widget);
168#endif
169  return NULL;
170}
171
172bool ChromeViewsDelegate::UseTransparentWindows() const {
173#if defined(USE_ASH)
174  // TODO(scottmg): http://crbug.com/133312. This needs context to determine
175  // if it's desktop or ash.
176#if defined(OS_CHROMEOS)
177  return true;
178#else
179  NOTIMPLEMENTED();
180  return false;
181#endif
182#else
183  return false;
184#endif
185}
186
187void ChromeViewsDelegate::AddRef() {
188  g_browser_process->AddRefModule();
189}
190
191void ChromeViewsDelegate::ReleaseRef() {
192  g_browser_process->ReleaseModule();
193}
194
195content::WebContents* ChromeViewsDelegate::CreateWebContents(
196    content::BrowserContext* browser_context,
197    content::SiteInstance* site_instance) {
198  return NULL;
199}
200
201void ChromeViewsDelegate::OnBeforeWidgetInit(
202    views::Widget::InitParams* params,
203    views::internal::NativeWidgetDelegate* delegate) {
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
304base::TimeDelta
305ChromeViewsDelegate::GetDefaultTextfieldObscuredRevealDuration() {
306  return base::TimeDelta();
307}
308