chrome/browser/chromeos/input_method/hidable_area.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/chromeos/input_method/hidable_area.h"
   6
   7 #include "ui/views/layout/fill_layout.h"
   8
   9 namespace chromeos {
  10 namespace input_method {
  11
  12 HidableArea::HidableArea() {
  13   place_holder_.reset(new views::View);
  14   place_holder_->set_owned_by_client();  // Won't own
  15
  16   // Initially show nothing.
  17   SetLayoutManager(new views::FillLayout);
  18   AddChildView(place_holder_.get());
  19 }
  20
  21 HidableArea::~HidableArea() {
  22 }
  23
  24 void HidableArea::SetContents(views::View* contents) {
  25   contents_.reset(contents);
  26   contents_->set_owned_by_client();  // Won't own
  27 }
  28
  29 void HidableArea::Show() {
  30   if (contents_.get() && contents_->parent() != this) {
  31     RemoveAllChildViews(false);  // Don't delete child views.
  32     AddChildView(contents_.get());
  33   }
  34 }
  35
  36 void HidableArea::Hide() {
  37   if (IsShown()) {
  38     RemoveAllChildViews(false);  // Don't delete child views.
  39     AddChildView(place_holder_.get());
  40   }
  41 }
  42
  43 bool HidableArea::IsShown() const {
  44   return contents_.get() && contents_->parent() == this;
  45 }
  46
  47 }  // namespace input_method
  48 }  // namespace chromeos