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      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 "ui/views/widget/widget_delegate.h"
      6 
      7 #include "base/strings/utf_string_conversions.h"
      8 #include "ui/gfx/image/image_skia.h"
      9 #include "ui/views/bubble/bubble_delegate.h"
     10 #include "ui/views/view.h"
     11 #include "ui/views/views_delegate.h"
     12 #include "ui/views/widget/widget.h"
     13 #include "ui/views/window/client_view.h"
     14 
     15 namespace views {
     16 
     17 ////////////////////////////////////////////////////////////////////////////////
     18 // WidgetDelegate:
     19 
     20 WidgetDelegate::WidgetDelegate() : default_contents_view_(NULL) {
     21 }
     22 
     23 void WidgetDelegate::OnWidgetMove() {
     24 }
     25 
     26 void WidgetDelegate::OnDisplayChanged() {
     27 }
     28 
     29 void WidgetDelegate::OnWorkAreaChanged() {
     30 }
     31 
     32 View* WidgetDelegate::GetInitiallyFocusedView() {
     33   return NULL;
     34 }
     35 
     36 BubbleDelegateView* WidgetDelegate::AsBubbleDelegate() {
     37   return NULL;
     38 }
     39 
     40 DialogDelegate* WidgetDelegate::AsDialogDelegate() {
     41   return NULL;
     42 }
     43 
     44 bool WidgetDelegate::CanResize() const {
     45   return false;
     46 }
     47 
     48 bool WidgetDelegate::CanMaximize() const {
     49   return false;
     50 }
     51 
     52 bool WidgetDelegate::CanActivate() const {
     53   return true;
     54 }
     55 
     56 ui::ModalType WidgetDelegate::GetModalType() const {
     57   return ui::MODAL_TYPE_NONE;
     58 }
     59 
     60 ui::AccessibilityTypes::Role WidgetDelegate::GetAccessibleWindowRole() const {
     61   return ui::AccessibilityTypes::ROLE_WINDOW;
     62 }
     63 
     64 string16 WidgetDelegate::GetAccessibleWindowTitle() const {
     65   return GetWindowTitle();
     66 }
     67 
     68 string16 WidgetDelegate::GetWindowTitle() const {
     69   return string16();
     70 }
     71 
     72 bool WidgetDelegate::ShouldShowWindowTitle() const {
     73   return true;
     74 }
     75 
     76 bool WidgetDelegate::ShouldShowCloseButton() const {
     77   return true;
     78 }
     79 
     80 bool WidgetDelegate::ShouldHandleSystemCommands() const {
     81   const Widget* widget = GetWidget();
     82   if (!widget)
     83     return false;
     84 
     85   return widget->non_client_view() != NULL;
     86 }
     87 
     88 gfx::ImageSkia WidgetDelegate::GetWindowAppIcon() {
     89   // Use the window icon as app icon by default.
     90   return GetWindowIcon();
     91 }
     92 
     93 // Returns the icon to be displayed in the window.
     94 gfx::ImageSkia WidgetDelegate::GetWindowIcon() {
     95   return gfx::ImageSkia();
     96 }
     97 
     98 bool WidgetDelegate::ShouldShowWindowIcon() const {
     99   return false;
    100 }
    101 
    102 bool WidgetDelegate::ExecuteWindowsCommand(int command_id) {
    103   return false;
    104 }
    105 
    106 std::string WidgetDelegate::GetWindowName() const {
    107   return std::string();
    108 }
    109 
    110 void WidgetDelegate::SaveWindowPlacement(const gfx::Rect& bounds,
    111                                          ui::WindowShowState show_state) {
    112   std::string window_name = GetWindowName();
    113   if (!ViewsDelegate::views_delegate || window_name.empty())
    114     return;
    115 
    116   ViewsDelegate::views_delegate->SaveWindowPlacement(
    117       GetWidget(), window_name, bounds, show_state);
    118 }
    119 
    120 bool WidgetDelegate::GetSavedWindowPlacement(
    121     gfx::Rect* bounds,
    122     ui::WindowShowState* show_state) const {
    123   std::string window_name = GetWindowName();
    124   if (!ViewsDelegate::views_delegate || window_name.empty())
    125     return false;
    126 
    127   return ViewsDelegate::views_delegate->GetSavedWindowPlacement(
    128       window_name, bounds, show_state);
    129 }
    130 
    131 bool WidgetDelegate::ShouldRestoreWindowSize() const {
    132   return true;
    133 }
    134 
    135 View* WidgetDelegate::GetContentsView() {
    136   if (!default_contents_view_)
    137     default_contents_view_ = new View;
    138   return default_contents_view_;
    139 }
    140 
    141 ClientView* WidgetDelegate::CreateClientView(Widget* widget) {
    142   return new ClientView(widget, GetContentsView());
    143 }
    144 
    145 NonClientFrameView* WidgetDelegate::CreateNonClientFrameView(Widget* widget) {
    146   return NULL;
    147 }
    148 
    149 View* WidgetDelegate::CreateOverlayView() {
    150   return NULL;
    151 }
    152 
    153 bool WidgetDelegate::WillProcessWorkAreaChange() const {
    154   return false;
    155 }
    156 
    157 bool WidgetDelegate::WidgetHasHitTestMask() const {
    158   return false;
    159 }
    160 
    161 void WidgetDelegate::GetWidgetHitTestMask(gfx::Path* mask) const {
    162   DCHECK(mask);
    163 }
    164 
    165 bool WidgetDelegate::ShouldDescendIntoChildForEventHandling(
    166     gfx::NativeView child,
    167     const gfx::Point& location) {
    168   return true;
    169 }
    170 
    171 ////////////////////////////////////////////////////////////////////////////////
    172 // WidgetDelegateView:
    173 
    174 WidgetDelegateView::WidgetDelegateView() {
    175   // A WidgetDelegate should be deleted on DeleteDelegate.
    176   set_owned_by_client();
    177 }
    178 
    179 WidgetDelegateView::~WidgetDelegateView() {
    180 }
    181 
    182 void WidgetDelegateView::DeleteDelegate() {
    183   delete this;
    184 }
    185 
    186 Widget* WidgetDelegateView::GetWidget() {
    187   return View::GetWidget();
    188 }
    189 
    190 const Widget* WidgetDelegateView::GetWidget() const {
    191   return View::GetWidget();
    192 }
    193 
    194 }  // namespace views
    195