| // Copyright 2013 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 "chrome/browser/ui/views/toolbar/toolbar_button.h" |
| |
| #include "base/bind.h" |
| #include "chrome/browser/ui/views/location_bar/location_bar_view.h" |
| #include "grit/theme_resources.h" |
| #include "grit/ui_strings.h" |
| #include "ui/base/accessibility/accessible_view_state.h" |
| #include "ui/base/l10n/l10n_util.h" |
| #include "ui/base/models/menu_model.h" |
| #include "ui/gfx/display.h" |
| #include "ui/gfx/screen.h" |
| #include "ui/views/controls/button/label_button_border.h" |
| #include "ui/views/controls/menu/menu_item_view.h" |
| #include "ui/views/controls/menu/menu_model_adapter.h" |
| #include "ui/views/controls/menu/menu_runner.h" |
| #include "ui/views/widget/widget.h" |
| |
| ToolbarButton::ToolbarButton(views::ButtonListener* listener, |
| ui::MenuModel* model) |
| : views::LabelButton(listener, base::string16()), |
| model_(model), |
| menu_showing_(false), |
| y_position_on_lbuttondown_(0), |
| show_menu_factory_(this) { |
| set_context_menu_controller(this); |
| } |
| |
| ToolbarButton::~ToolbarButton() { |
| } |
| |
| void ToolbarButton::Init() { |
| SetFocusable(true); |
| image()->EnableCanvasFlippingForRTLUI(true); |
| |
| // Provides the hover/pressed style used by buttons in the toolbar. |
| views::LabelButtonBorder* border = |
| new views::LabelButtonBorder(views::Button::STYLE_BUTTON); |
| const int kHoverImages[] = IMAGE_GRID(IDR_TOOLBAR_BUTTON_HOVER); |
| border->SetPainter(false, views::Button::STATE_HOVERED, |
| views::Painter::CreateImageGridPainter( |
| kHoverImages)); |
| const int kPressedImages[] = IMAGE_GRID(IDR_TOOLBAR_BUTTON_PRESSED); |
| border->SetPainter(false, views::Button::STATE_PRESSED, |
| views::Painter::CreateImageGridPainter( |
| kPressedImages)); |
| border->SetPainter(false, views::Button::STATE_NORMAL, NULL); |
| border->SetPainter(true, views::Button::STATE_NORMAL, NULL); |
| set_border(border); |
| } |
| |
| void ToolbarButton::ClearPendingMenu() { |
| show_menu_factory_.InvalidateWeakPtrs(); |
| } |
| |
| bool ToolbarButton::IsMenuShowing() const { |
| return menu_showing_; |
| } |
| |
| gfx::Size ToolbarButton::GetPreferredSize() { |
| gfx::Size size(image()->GetPreferredSize()); |
| gfx::Size label_size = label()->GetPreferredSize(); |
| if (label_size.width() > 0) |
| size.Enlarge(label_size.width() + LocationBarView::GetItemPadding(), 0); |
| return size; |
| } |
| |
| bool ToolbarButton::OnMousePressed(const ui::MouseEvent& event) { |
| if (enabled() && ShouldShowMenu() && |
| IsTriggerableEvent(event) && HitTestPoint(event.location())) { |
| // Store the y pos of the mouse coordinates so we can use them later to |
| // determine if the user dragged the mouse down (which should pop up the |
| // drag down menu immediately, instead of waiting for the timer) |
| y_position_on_lbuttondown_ = event.y(); |
| |
| // Schedule a task that will show the menu. |
| const int kMenuTimerDelay = 500; |
| base::MessageLoop::current()->PostDelayedTask( |
| FROM_HERE, |
| base::Bind(&ToolbarButton::ShowDropDownMenu, |
| show_menu_factory_.GetWeakPtr(), |
| ui::GetMenuSourceTypeForEvent(event)), |
| base::TimeDelta::FromMilliseconds(kMenuTimerDelay)); |
| } |
| return LabelButton::OnMousePressed(event); |
| } |
| |
| bool ToolbarButton::OnMouseDragged(const ui::MouseEvent& event) { |
| bool result = LabelButton::OnMouseDragged(event); |
| |
| if (show_menu_factory_.HasWeakPtrs()) { |
| // If the mouse is dragged to a y position lower than where it was when |
| // clicked then we should not wait for the menu to appear but show |
| // it immediately. |
| if (event.y() > y_position_on_lbuttondown_ + GetHorizontalDragThreshold()) { |
| show_menu_factory_.InvalidateWeakPtrs(); |
| ShowDropDownMenu(ui::GetMenuSourceTypeForEvent(event)); |
| } |
| } |
| |
| return result; |
| } |
| |
| void ToolbarButton::OnMouseReleased(const ui::MouseEvent& event) { |
| if (IsTriggerableEvent(event) || |
| (event.IsRightMouseButton() && !HitTestPoint(event.location()))) { |
| LabelButton::OnMouseReleased(event); |
| } |
| |
| if (IsTriggerableEvent(event)) |
| show_menu_factory_.InvalidateWeakPtrs(); |
| } |
| |
| void ToolbarButton::OnMouseCaptureLost() { |
| } |
| |
| void ToolbarButton::OnMouseExited(const ui::MouseEvent& event) { |
| // Starting a drag results in a MouseExited, we need to ignore it. |
| // A right click release triggers an exit event. We want to |
| // remain in a PUSHED state until the drop down menu closes. |
| if (state_ != STATE_DISABLED && !InDrag() && state_ != STATE_PRESSED) |
| SetState(STATE_NORMAL); |
| } |
| |
| void ToolbarButton::OnGestureEvent(ui::GestureEvent* event) { |
| if (menu_showing_) { |
| // While dropdown menu is showing the button should not handle gestures. |
| event->StopPropagation(); |
| return; |
| } |
| |
| LabelButton::OnGestureEvent(event); |
| } |
| |
| void ToolbarButton::GetAccessibleState(ui::AccessibleViewState* state) { |
| CustomButton::GetAccessibleState(state); |
| state->role = ui::AccessibilityTypes::ROLE_BUTTONDROPDOWN; |
| state->default_action = l10n_util::GetStringUTF16(IDS_APP_ACCACTION_PRESS); |
| state->state = ui::AccessibilityTypes::STATE_HASPOPUP; |
| } |
| |
| void ToolbarButton::ShowContextMenuForView(View* source, |
| const gfx::Point& point, |
| ui::MenuSourceType source_type) { |
| if (!enabled()) |
| return; |
| |
| show_menu_factory_.InvalidateWeakPtrs(); |
| ShowDropDownMenu(source_type); |
| } |
| |
| bool ToolbarButton::ShouldEnterPushedState(const ui::Event& event) { |
| // Enter PUSHED state on press with Left or Right mouse button or on taps. |
| // Remain in this state while the context menu is open. |
| return event.type() == ui::ET_GESTURE_TAP || |
| event.type() == ui::ET_GESTURE_TAP_DOWN || |
| (event.IsMouseEvent() && ((ui::EF_LEFT_MOUSE_BUTTON | |
| ui::EF_RIGHT_MOUSE_BUTTON) & event.flags()) != 0); |
| } |
| |
| bool ToolbarButton::ShouldShowMenu() { |
| return model_ != NULL; |
| } |
| |
| void ToolbarButton::ShowDropDownMenu(ui::MenuSourceType source_type) { |
| if (!ShouldShowMenu()) |
| return; |
| |
| gfx::Rect lb = GetLocalBounds(); |
| |
| // Both the menu position and the menu anchor type change if the UI layout |
| // is right-to-left. |
| gfx::Point menu_position(lb.origin()); |
| menu_position.Offset(0, lb.height() - 1); |
| if (base::i18n::IsRTL()) |
| menu_position.Offset(lb.width() - 1, 0); |
| |
| View::ConvertPointToScreen(this, &menu_position); |
| |
| #if defined(OS_WIN) |
| int left_bound = GetSystemMetrics(SM_XVIRTUALSCREEN); |
| #elif defined(OS_CHROMEOS) |
| // A window won't overlap between displays on ChromeOS. |
| // Use the left bound of the display on which |
| // the menu button exists. |
| gfx::NativeView view = GetWidget()->GetNativeView(); |
| gfx::Display display = gfx::Screen::GetScreenFor( |
| view)->GetDisplayNearestWindow(view); |
| int left_bound = display.bounds().x(); |
| #else |
| int left_bound = 0; |
| NOTIMPLEMENTED(); |
| #endif |
| if (menu_position.x() < left_bound) |
| menu_position.set_x(left_bound); |
| |
| // Make the button look depressed while the menu is open. |
| SetState(STATE_PRESSED); |
| |
| menu_showing_ = true; |
| |
| // Create and run menu. Display an empty menu if model is NULL. |
| if (model_.get()) { |
| views::MenuModelAdapter menu_delegate(model_.get()); |
| menu_delegate.set_triggerable_event_flags(triggerable_event_flags()); |
| menu_runner_.reset(new views::MenuRunner(menu_delegate.CreateMenu())); |
| views::MenuRunner::RunResult result = |
| menu_runner_->RunMenuAt(GetWidget(), NULL, |
| gfx::Rect(menu_position, gfx::Size(0, 0)), |
| views::MenuItemView::TOPLEFT, |
| source_type, |
| views::MenuRunner::HAS_MNEMONICS); |
| if (result == views::MenuRunner::MENU_DELETED) |
| return; |
| } else { |
| views::MenuDelegate menu_delegate; |
| views::MenuItemView* menu = new views::MenuItemView(&menu_delegate); |
| menu_runner_.reset(new views::MenuRunner(menu)); |
| views::MenuRunner::RunResult result = |
| menu_runner_->RunMenuAt(GetWidget(), NULL, |
| gfx::Rect(menu_position, gfx::Size(0, 0)), |
| views::MenuItemView::TOPLEFT, |
| source_type, |
| views::MenuRunner::HAS_MNEMONICS); |
| if (result == views::MenuRunner::MENU_DELETED) |
| return; |
| } |
| |
| menu_showing_ = false; |
| |
| // Need to explicitly clear mouse handler so that events get sent |
| // properly after the menu finishes running. If we don't do this, then |
| // the first click to other parts of the UI is eaten. |
| SetMouseHandler(NULL); |
| |
| // Set the state back to normal after the drop down menu is closed. |
| if (state_ != STATE_DISABLED) |
| SetState(STATE_NORMAL); |
| } |