chrome/browser/ui/views/toolbar/reload_button.cc

   1 // Copyright 2013 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/toolbar/reload_button.h"
   6
   7 #include "base/strings/utf_string_conversions.h"
   8 #include "chrome/app/chrome_command_ids.h"
   9 #include "chrome/browser/command_updater.h"
  10 #include "chrome/browser/search/search.h"
  11 #include "chrome/browser/ui/search/search_model.h"
  12 #include "chrome/grit/generated_resources.h"
  13 #include "grit/theme_resources.h"
  14 #include "ui/base/l10n/l10n_util.h"
  15 #include "ui/base/models/simple_menu_model.h"
  16 #include "ui/base/theme_provider.h"
  17 #include "ui/base/window_open_disposition.h"
  18 #include "ui/views/metrics.h"
  19 #include "ui/views/widget/widget.h"
  20
  21
  22 namespace {
  23
  24 // Contents of the Reload drop-down menu.
  25 const int kReloadMenuItems[]  = {
  26   IDS_RELOAD_MENU_NORMAL_RELOAD_ITEM,
  27   IDS_RELOAD_MENU_HARD_RELOAD_ITEM,
  28   IDS_RELOAD_MENU_EMPTY_AND_HARD_RELOAD_ITEM,
  29 };
  30
  31 }  // namespace
  32
  33
  34 // ReloadButton ---------------------------------------------------------------
  35
  36 // static
  37 const char ReloadButton::kViewClassName[] = "ReloadButton";
  38
  39 ReloadButton::ReloadButton(CommandUpdater* command_updater)
  40     : ToolbarButton(this, CreateMenuModel()),
  41       command_updater_(command_updater),
  42       intended_mode_(MODE_RELOAD),
  43       visible_mode_(MODE_RELOAD),
  44       double_click_timer_delay_(
  45           base::TimeDelta::FromMilliseconds(views::GetDoubleClickInterval())),
  46       stop_to_reload_timer_delay_(base::TimeDelta::FromMilliseconds(1350)),
  47       menu_enabled_(false),
  48       testing_mouse_hovered_(false),
  49       testing_reload_count_(0) {
  50 }
  51
  52 ReloadButton::~ReloadButton() {
  53 }
  54
  55 void ReloadButton::ChangeMode(Mode mode, bool force) {
  56   intended_mode_ = mode;
  57
  58   // If the change is forced, or the user isn't hovering the icon, or it's safe
  59   // to change it to the other image type, make the change immediately;
  60   // otherwise we'll let it happen later.
  61   if (force || (!IsMouseHovered() && !testing_mouse_hovered_) ||
  62       ((mode == MODE_STOP) ?
  63       !double_click_timer_.IsRunning() : (visible_mode_ != MODE_STOP))) {
  64     double_click_timer_.Stop();
  65     stop_to_reload_timer_.Stop();
  66     if (mode != visible_mode_)
  67       ChangeModeInternal(mode);
  68     SetEnabled(true);
  69
  70   // We want to disable the button if we're preventing a change from stop to
  71   // reload due to hovering, but not if we're preventing a change from reload to
  72   // stop due to the double-click timer running.  (Disabled reload state is only
  73   // applicable when instant extended API is enabled and mode is NTP, which is
  74   // handled just above.)
  75   } else if (visible_mode_ != MODE_RELOAD) {
  76     SetEnabled(false);
  77
  78     // Go ahead and change to reload after a bit, which allows repeated reloads
  79     // without moving the mouse.
  80     if (!stop_to_reload_timer_.IsRunning()) {
  81       stop_to_reload_timer_.Start(FROM_HERE, stop_to_reload_timer_delay_, this,
  82                                   &ReloadButton::OnStopToReloadTimer);
  83     }
  84   }
  85 }
  86
  87 void ReloadButton::LoadImages() {
  88   ChangeModeInternal(visible_mode_);
  89
  90   SchedulePaint();
  91   PreferredSizeChanged();
  92 }
  93
  94 void ReloadButton::OnMouseExited(const ui::MouseEvent& event) {
  95   ToolbarButton::OnMouseExited(event);
  96   if (!IsMenuShowing())
  97     ChangeMode(intended_mode_, true);
  98 }
  99
 100 bool ReloadButton::GetTooltipText(const gfx::Point& p,
 101                                   base::string16* tooltip) const {
 102   int reload_tooltip = menu_enabled_ ?
 103       IDS_TOOLTIP_RELOAD_WITH_MENU : IDS_TOOLTIP_RELOAD;
 104   int text_id = (visible_mode_ == MODE_RELOAD) ?
 105       reload_tooltip : IDS_TOOLTIP_STOP;
 106   tooltip->assign(l10n_util::GetStringUTF16(text_id));
 107   return true;
 108 }
 109
 110 const char* ReloadButton::GetClassName() const {
 111   return kViewClassName;
 112 }
 113
 114 void ReloadButton::GetAccessibleState(ui::AXViewState* state) {
 115   if (menu_enabled_)
 116     ToolbarButton::GetAccessibleState(state);
 117   else
 118     CustomButton::GetAccessibleState(state);
 119 }
 120
 121 bool ReloadButton::ShouldShowMenu() {
 122   return menu_enabled_ && (visible_mode_ == MODE_RELOAD);
 123 }
 124
 125 void ReloadButton::ShowDropDownMenu(ui::MenuSourceType source_type) {
 126   ToolbarButton::ShowDropDownMenu(source_type);  // Blocks.
 127   ChangeMode(intended_mode_, true);
 128 }
 129
 130 void ReloadButton::ButtonPressed(views::Button* /* button */,
 131                                  const ui::Event& event) {
 132   ClearPendingMenu();
 133
 134   if (visible_mode_ == MODE_STOP) {
 135     if (command_updater_)
 136       command_updater_->ExecuteCommandWithDisposition(IDC_STOP, CURRENT_TAB);
 137     // The user has clicked, so we can feel free to update the button,
 138     // even if the mouse is still hovering.
 139     ChangeMode(MODE_RELOAD, true);
 140   } else if (!double_click_timer_.IsRunning()) {
 141     // Shift-clicking or ctrl-clicking the reload button means we should ignore
 142     // any cached content.
 143     int command;
 144     int flags = event.flags();
 145     if (event.IsShiftDown() || event.IsControlDown()) {
 146       command = IDC_RELOAD_IGNORING_CACHE;
 147       // Mask off Shift and Control so they don't affect the disposition below.
 148       flags &= ~(ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN);
 149     } else {
 150       command = IDC_RELOAD;
 151     }
 152
 153     // Start a timer - while this timer is running, the reload button cannot be
 154     // changed to a stop button.  We do not set |intended_mode_| to MODE_STOP
 155     // here as the browser will do that when it actually starts loading (which
 156     // may happen synchronously, thus the need to do this before telling the
 157     // browser to execute the reload command).
 158     double_click_timer_.Start(FROM_HERE, double_click_timer_delay_, this,
 159                               &ReloadButton::OnDoubleClickTimer);
 160
 161     ExecuteBrowserCommand(command, flags);
 162     ++testing_reload_count_;
 163   }
 164 }
 165
 166 bool ReloadButton::IsCommandIdChecked(int command_id) const {
 167   return false;
 168 }
 169
 170 bool ReloadButton::IsCommandIdEnabled(int command_id) const {
 171   return true;
 172 }
 173
 174 bool ReloadButton::IsCommandIdVisible(int command_id) const {
 175   return true;
 176 }
 177
 178 bool ReloadButton::GetAcceleratorForCommandId(int command_id,
 179     ui::Accelerator* accelerator) {
 180   switch (command_id) {
 181     case IDS_RELOAD_MENU_NORMAL_RELOAD_ITEM:
 182       GetWidget()->GetAccelerator(IDC_RELOAD, accelerator);
 183       return true;
 184     case IDS_RELOAD_MENU_HARD_RELOAD_ITEM:
 185       GetWidget()->GetAccelerator(IDC_RELOAD_IGNORING_CACHE, accelerator);
 186       return true;
 187   }
 188   return GetWidget()->GetAccelerator(command_id, accelerator);
 189 }
 190
 191 void ReloadButton::ExecuteCommand(int command_id, int event_flags) {
 192   int browser_command = 0;
 193   switch (command_id) {
 194     case IDS_RELOAD_MENU_NORMAL_RELOAD_ITEM:
 195       browser_command = IDC_RELOAD;
 196       break;
 197     case IDS_RELOAD_MENU_HARD_RELOAD_ITEM:
 198       browser_command = IDC_RELOAD_IGNORING_CACHE;
 199       break;
 200     case IDS_RELOAD_MENU_EMPTY_AND_HARD_RELOAD_ITEM:
 201       browser_command = IDC_RELOAD_CLEARING_CACHE;
 202       break;
 203     default:
 204       NOTREACHED();
 205   }
 206   ExecuteBrowserCommand(browser_command, event_flags);
 207 }
 208
 209 ui::SimpleMenuModel* ReloadButton::CreateMenuModel() {
 210   ui::SimpleMenuModel* menu_model = new ui::SimpleMenuModel(this);
 211   for (size_t i = 0; i < arraysize(kReloadMenuItems); ++i)
 212     menu_model->AddItemWithStringId(kReloadMenuItems[i], kReloadMenuItems[i]);
 213
 214   return menu_model;
 215 }
 216
 217 void ReloadButton::ExecuteBrowserCommand(int command, int event_flags) {
 218   if (!command_updater_)
 219     return;
 220   command_updater_->ExecuteCommandWithDisposition(
 221       command, ui::DispositionFromEventFlags(event_flags));
 222 }
 223
 224 void ReloadButton::ChangeModeInternal(Mode mode) {
 225   ui::ThemeProvider* tp = GetThemeProvider();
 226   // |tp| can be NULL in unit tests.
 227   if (tp) {
 228     SetImage(views::Button::STATE_NORMAL, *(tp->GetImageSkiaNamed(
 229         (mode == MODE_RELOAD) ? IDR_RELOAD : IDR_STOP)));
 230     SetImage(views::Button::STATE_DISABLED, *(tp->GetImageSkiaNamed(
 231         (mode == MODE_RELOAD) ? IDR_RELOAD_D : IDR_STOP_D)));
 232   }
 233
 234   visible_mode_ = mode;
 235   SchedulePaint();
 236 }
 237
 238 void ReloadButton::OnDoubleClickTimer() {
 239   if (!IsMenuShowing())
 240     ChangeMode(intended_mode_, false);
 241 }
 242
 243 void ReloadButton::OnStopToReloadTimer() {
 244   DCHECK(!IsMenuShowing());
 245   ChangeMode(intended_mode_, true);
 246 }