views: Move bubble, events, focus and layout to ui/views/.

views/focus/focus_manager.cc

Index: views/focus/focus_manager.cc
diff --git a/views/focus/focus_manager.cc b/views/focus/focus_manager.cc
deleted file mode 100644
index 3ee07552a6da5129eabd4c46fe60e0fd715b6eb1..0000000000000000000000000000000000000000
--- a/views/focus/focus_manager.cc
+++ /dev/null
@@ -1,413 +0,0 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "views/focus/focus_manager.h"
-
-#include <algorithm>
-
-#include "base/auto_reset.h"
-#include "base/logging.h"
-#include "build/build_config.h"
-#include "ui/base/accelerator_manager.h"
-#include "ui/base/keycodes/keyboard_codes.h"
-#include "ui/base/models/accelerator.h"
-#include "views/focus/focus_search.h"
-#include "views/focus/view_storage.h"
-#include "views/focus/widget_focus_manager.h"
-#include "views/view.h"
-#include "views/widget/root_view.h"
-#include "views/widget/widget.h"
-
-namespace views {
-
-FocusManager::FocusManager(Widget* widget)
-    : widget_(widget),
-      focused_view_(NULL),
-      accelerator_manager_(new ui::AcceleratorManager),
-      focus_change_reason_(kReasonDirectFocusChange),
-      is_changing_focus_(false) {
-  DCHECK(widget_);
-  stored_focused_view_storage_id_ =
-      ViewStorage::GetInstance()->CreateStorageID();
-}
-
-FocusManager::~FocusManager() {
-}
-
-bool FocusManager::OnKeyEvent(const KeyEvent& event) {
-#if defined(OS_WIN)
-  // If the focused view wants to process the key event as is, let it be.
-  // On Linux we always dispatch key events to the focused view first, so
-  // we should not do this check here. See also NativeWidgetGtk::OnKeyEvent().
-  if (focused_view_ && focused_view_->SkipDefaultKeyEventProcessing(event))
-    return true;
-#endif
-
-  // Intercept Tab related messages for focus traversal.
-  // Note that we don't do focus traversal if the root window is not part of the
-  // active window hierarchy as this would mean we have no focused view and
-  // would focus the first focusable view.
-#if defined(OS_WIN) && !defined(USE_AURA)
-  HWND top_window = widget_->GetNativeView();
-  HWND active_window = ::GetActiveWindow();
-  if ((active_window == top_window || ::IsChild(active_window, top_window)) &&
-       IsTabTraversalKeyEvent(event)) {
-    AdvanceFocus(event.IsShiftDown());
-    return false;
-  }
-#else
-  if (IsTabTraversalKeyEvent(event)) {
-    AdvanceFocus(event.IsShiftDown());
-    return false;
-  }
-#endif
-
-  // Intercept arrow key messages to switch between grouped views.
-  ui::KeyboardCode key_code = event.key_code();
-  if (focused_view_ && focused_view_->GetGroup() != -1 &&
-      (key_code == ui::VKEY_UP || key_code == ui::VKEY_DOWN ||
-       key_code == ui::VKEY_LEFT || key_code == ui::VKEY_RIGHT)) {
-    bool next = (key_code == ui::VKEY_RIGHT || key_code == ui::VKEY_DOWN);
-    View::Views views;
-    focused_view_->parent()->GetViewsInGroup(focused_view_->GetGroup(), &views);
-    View::Views::const_iterator i(
-        std::find(views.begin(), views.end(), focused_view_));
-    DCHECK(i != views.end());
-    int index = static_cast<int>(i - views.begin());
-    index += next ? 1 : -1;
-    if (index < 0) {
-      index = static_cast<int>(views.size()) - 1;
-    } else if (index >= static_cast<int>(views.size())) {
-      index = 0;
-    }
-    SetFocusedViewWithReason(views[index], kReasonFocusTraversal);
-    return false;
-  }
-
-  // Process keyboard accelerators.
-  // If the key combination matches an accelerator, the accelerator is
-  // triggered, otherwise the key event is processed as usual.
-  ui::Accelerator accelerator(event.key_code(),
-                              event.IsShiftDown(),
-                              event.IsControlDown(),
-                              event.IsAltDown());
-  if (ProcessAccelerator(accelerator)) {
-    // If a shortcut was activated for this keydown message, do not propagate
-    // the event further.
-    return false;
-  }
-  return true;
-}
-
-void FocusManager::ValidateFocusedView() {
-  if (focused_view_) {
-    if (!ContainsView(focused_view_))
-      ClearFocus();
-  }
-}
-
-// Tests whether a view is valid, whether it still belongs to the window
-// hierarchy of the FocusManager.
-bool FocusManager::ContainsView(View* view) {
-  Widget* widget = view->GetWidget();
-  return widget ? widget->GetFocusManager() == this : false;
-}
-
-void FocusManager::AdvanceFocus(bool reverse) {
-  View* v = GetNextFocusableView(focused_view_, reverse, false);
-  // Note: Do not skip this next block when v == focused_view_.  If the user
-  // tabs past the last focusable element in a webpage, we'll get here, and if
-  // the TabContentsContainerView is the only focusable view (possible in
-  // fullscreen mode), we need to run this block in order to cycle around to the
-  // first element on the page.
-  if (v) {
-    v->AboutToRequestFocusFromTabTraversal(reverse);
-    SetFocusedViewWithReason(v, kReasonFocusTraversal);
-  }
-}
-
-void FocusManager::ClearNativeFocus() {
-  // Keep the top root window focused so we get keyboard events.
-  widget_->ClearNativeFocus();
-}
-
-View* FocusManager::GetNextFocusableView(View* original_starting_view,
-                                         bool reverse,
-                                         bool dont_loop) {
-  FocusTraversable* focus_traversable = NULL;
-
-  // Let's revalidate the focused view.
-  ValidateFocusedView();
-
-  View* starting_view = NULL;
-  if (original_starting_view) {
-    // Search up the containment hierarchy to see if a view is acting as
-    // a pane, and wants to implement its own focus traversable to keep
-    // the focus trapped within that pane.
-    View* pane_search = original_starting_view;
-    while (pane_search) {
-      focus_traversable = pane_search->GetPaneFocusTraversable();
-      if (focus_traversable) {
-        starting_view = original_starting_view;
-        break;
-      }
-      pane_search = pane_search->parent();
-    }
-
-    if (!focus_traversable) {
-      if (!reverse) {
-        // If the starting view has a focus traversable, use it.
-        // This is the case with NativeWidgetWins for example.
-        focus_traversable = original_starting_view->GetFocusTraversable();
-
-        // Otherwise default to the root view.
-        if (!focus_traversable) {
-          focus_traversable =
-              original_starting_view->GetWidget()->GetFocusTraversable();
-          starting_view = original_starting_view;
-        }
-      } else {
-        // When you are going back, starting view's FocusTraversable
-        // should not be used.
-        focus_traversable =
-            original_starting_view->GetWidget()->GetFocusTraversable();
-        starting_view = original_starting_view;
-      }
-    }
-  } else {
-    focus_traversable = widget_->GetFocusTraversable();
-  }
-
-  // Traverse the FocusTraversable tree down to find the focusable view.
-  View* v = FindFocusableView(focus_traversable, starting_view, reverse);
-  if (v) {
-    return v;
-  } else {
-    // Let's go up in the FocusTraversable tree.
-    FocusTraversable* parent_focus_traversable =
-        focus_traversable->GetFocusTraversableParent();
-    starting_view = focus_traversable->GetFocusTraversableParentView();
-    while (parent_focus_traversable) {
-      FocusTraversable* new_focus_traversable = NULL;
-      View* new_starting_view = NULL;
-      // When we are going backward, the parent view might gain the next focus.
-      bool check_starting_view = reverse;
-      v = parent_focus_traversable->GetFocusSearch()->FindNextFocusableView(
-          starting_view, reverse, FocusSearch::UP,
-          check_starting_view, &new_focus_traversable, &new_starting_view);
-
-      if (new_focus_traversable) {
-        DCHECK(!v);
-
-        // There is a FocusTraversable, traverse it down.
-        v = FindFocusableView(new_focus_traversable, NULL, reverse);
-      }
-
-      if (v)
-        return v;
-
-      starting_view = focus_traversable->GetFocusTraversableParentView();
-      parent_focus_traversable =
-          parent_focus_traversable->GetFocusTraversableParent();
-    }
-
-    // If we get here, we have reached the end of the focus hierarchy, let's
-    // loop. Make sure there was at least a view to start with, to prevent
-    // infinitely looping in empty windows.
-    if (!dont_loop && original_starting_view) {
-      // Easy, just clear the selection and press tab again.
-      // By calling with NULL as the starting view, we'll start from the
-      // top_root_view.
-      return GetNextFocusableView(NULL, reverse, true);
-    }
-  }
-  return NULL;
-}
-
-void FocusManager::SetFocusedViewWithReason(
-    View* view, FocusChangeReason reason) {
-  if (focused_view_ == view)
-    return;
-
-  AutoReset<bool> auto_changing_focus(&is_changing_focus_, true);
-  // Update the reason for the focus change (since this is checked by
-  // some listeners), then notify all listeners.
-  focus_change_reason_ = reason;
-  FOR_EACH_OBSERVER(FocusChangeListener, focus_change_listeners_,
-                    OnWillChangeFocus(focused_view_, view));
-
-  View* old_focused_view = focused_view_;
-  focused_view_ = view;
-  if (old_focused_view)
-    old_focused_view->Blur();
-  if (focused_view_)
-    focused_view_->Focus();
-
-  FOR_EACH_OBSERVER(FocusChangeListener, focus_change_listeners_,
-                    OnDidChangeFocus(old_focused_view, focused_view_));
-}
-
-void FocusManager::ClearFocus() {
-  SetFocusedView(NULL);
-  ClearNativeFocus();
-}
-
-void FocusManager::StoreFocusedView() {
-  ViewStorage* view_storage = ViewStorage::GetInstance();
-  if (!view_storage) {
-    // This should never happen but bug 981648 seems to indicate it could.
-    NOTREACHED();
-    return;
-  }
-
-  // TODO (jcampan): when a TabContents containing a popup is closed, the focus
-  // is stored twice causing an assert. We should find a better alternative than
-  // removing the view from the storage explicitly.
-  view_storage->RemoveView(stored_focused_view_storage_id_);
-
-  if (!focused_view_)
-    return;
-
-  view_storage->StoreView(stored_focused_view_storage_id_, focused_view_);
-
-  View* v = focused_view_;
-
-  {
-    // Temporarily disable notification.  ClearFocus() will set the focus to the
-    // main browser window.  This extra focus bounce which happens during
-    // deactivation can confuse registered WidgetFocusListeners, as the focus
-    // is not changing due to a user-initiated event.
-    AutoNativeNotificationDisabler local_notification_disabler;
-    ClearFocus();
-  }
-
-  if (v)
-    v->SchedulePaint();  // Remove focus border.
-}
-
-void FocusManager::RestoreFocusedView() {
-  ViewStorage* view_storage = ViewStorage::GetInstance();
-  if (!view_storage) {
-    // This should never happen but bug 981648 seems to indicate it could.
-    NOTREACHED();
-    return;
-  }
-
-  View* view = view_storage->RetrieveView(stored_focused_view_storage_id_);
-  if (view) {
-    if (ContainsView(view)) {
-      if (!view->IsFocusableInRootView() &&
-          view->IsAccessibilityFocusableInRootView()) {
-        // RequestFocus would fail, but we want to restore focus to controls
-        // that had focus in accessibility mode.
-        SetFocusedViewWithReason(view, kReasonFocusRestore);
-      } else {
-        // This usually just sets the focus if this view is focusable, but
-        // let the view override RequestFocus if necessary.
-        view->RequestFocus();
-
-        // If it succeeded, the reason would be incorrect; set it to
-        // focus restore.
-        if (focused_view_ == view)
-          focus_change_reason_ = kReasonFocusRestore;
-      }
-    }
-  }
-}
-
-void FocusManager::ClearStoredFocusedView() {
-  ViewStorage* view_storage = ViewStorage::GetInstance();
-  if (!view_storage) {
-    // This should never happen but bug 981648 seems to indicate it could.
-    NOTREACHED();
-    return;
-  }
-  view_storage->RemoveView(stored_focused_view_storage_id_);
-}
-
-// Find the next (previous if reverse is true) focusable view for the specified
-// FocusTraversable, starting at the specified view, traversing down the
-// FocusTraversable hierarchy.
-View* FocusManager::FindFocusableView(FocusTraversable* focus_traversable,
-                                      View* starting_view,
-                                      bool reverse) {
-  FocusTraversable* new_focus_traversable = NULL;
-  View* new_starting_view = NULL;
-  View* v = focus_traversable->GetFocusSearch()->FindNextFocusableView(
-      starting_view,
-      reverse,
-      FocusSearch::DOWN,
-      false,
-      &new_focus_traversable,
-      &new_starting_view);
-
-  // Let's go down the FocusTraversable tree as much as we can.
-  while (new_focus_traversable) {
-    DCHECK(!v);
-    focus_traversable = new_focus_traversable;
-    starting_view = new_starting_view;
-    new_focus_traversable = NULL;
-    starting_view = NULL;
-    v = focus_traversable->GetFocusSearch()->FindNextFocusableView(
-        starting_view,
-        reverse,
-        FocusSearch::DOWN,
-        false,
-        &new_focus_traversable,
-        &new_starting_view);
-  }
-  return v;
-}
-
-void FocusManager::RegisterAccelerator(
-    const ui::Accelerator& accelerator,
-    ui::AcceleratorTarget* target) {
-  accelerator_manager_->Register(accelerator, target);
-}
-
-void FocusManager::UnregisterAccelerator(const ui::Accelerator& accelerator,
-                                         ui::AcceleratorTarget* target) {
-  accelerator_manager_->Unregister(accelerator, target);
-}
-
-void FocusManager::UnregisterAccelerators(ui::AcceleratorTarget* target) {
-  accelerator_manager_->UnregisterAll(target);
-}
-
-bool FocusManager::ProcessAccelerator(const ui::Accelerator& accelerator) {
-  return accelerator_manager_->Process(accelerator);
-}
-
-ui::AcceleratorTarget* FocusManager::GetCurrentTargetForAccelerator(
-    const ui::Accelerator& accelerator) const {
-  return accelerator_manager_->GetCurrentTarget(accelerator);
-}
-
-void FocusManager::FocusNativeView(gfx::NativeView native_view) {
-  widget_->FocusNativeView(native_view);
-}
-
-// static
-bool FocusManager::IsTabTraversalKeyEvent(const KeyEvent& key_event) {
-  return key_event.key_code() == ui::VKEY_TAB && !key_event.IsControlDown();
-}
-
-void FocusManager::ViewRemoved(View* removed) {
-  // If the view being removed contains (or is) the focused view,
-  // clear the focus.  However, it's not safe to call ClearFocus()
-  // (and in turn ClearNativeFocus()) here because ViewRemoved() can
-  // be called while the top level widget is being destroyed.
-  if (focused_view_ && removed && removed->Contains(focused_view_))
-    SetFocusedView(NULL);
-}
-
-void FocusManager::AddFocusChangeListener(FocusChangeListener* listener) {
-  focus_change_listeners_.AddObserver(listener);
-}
-
-void FocusManager::RemoveFocusChangeListener(FocusChangeListener* listener) {
-  focus_change_listeners_.RemoveObserver(listener);
-}
-
-}  // namespace views