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// Copyright 2018 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 "ui/views/touchui/touch_selection_menu_views.h"
#include <memory>
#include <utility>
#include "base/stl_util.h"
#include "base/strings/utf_string_conversions.h"
#include "ui/aura/window.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/pointer/touch_editing_controller.h"
#include "ui/display/display.h"
#include "ui/display/screen.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/text_utils.h"
#include "ui/strings/grit/ui_strings.h"
#include "ui/touch_selection/touch_selection_menu_runner.h"
#include "ui/views/controls/button/label_button.h"
#include "ui/views/layout/box_layout.h"
#include "ui/views/metadata/metadata_impl_macros.h"
namespace views {
namespace {
struct MenuCommand {
int command_id;
int message_id;
} kMenuCommands[] = {
{ui::TouchEditable::kCut, IDS_APP_CUT},
{ui::TouchEditable::kCopy, IDS_APP_COPY},
{ui::TouchEditable::kPaste, IDS_APP_PASTE},
};
constexpr int kSpacingBetweenButtons = 2;
} // namespace
TouchSelectionMenuViews::TouchSelectionMenuViews(
TouchSelectionMenuRunnerViews* owner,
ui::TouchSelectionMenuClient* client,
aura::Window* context)
: BubbleDialogDelegateView(nullptr, BubbleBorder::BOTTOM_CENTER),
owner_(owner),
client_(client) {
DCHECK(owner_);
DCHECK(client_);
DialogDelegate::SetButtons(ui::DIALOG_BUTTON_NONE);
set_shadow(BubbleBorder::STANDARD_SHADOW);
set_parent_window(context);
constexpr gfx::Insets kMenuMargins = gfx::Insets(1);
set_margins(kMenuMargins);
SetCanActivate(false);
set_adjust_if_offscreen(true);
SetFlipCanvasOnPaintForRTLUI(true);
SetLayoutManager(
std::make_unique<BoxLayout>(BoxLayout::Orientation::kHorizontal,
gfx::Insets(), kSpacingBetweenButtons));
}
void TouchSelectionMenuViews::ShowMenu(const gfx::Rect& anchor_rect,
const gfx::Size& handle_image_size) {
CreateButtons();
// After buttons are created, check if there is enough room between handles to
// show the menu and adjust anchor rect properly if needed, just in case the
// menu is needed to be shown under the selection.
gfx::Rect adjusted_anchor_rect(anchor_rect);
int menu_width = GetPreferredSize().width();
// TODO(mfomitchev): This assumes that the handles are center-aligned to the
// |achor_rect| edges, which is not true. We should fix this, perhaps by
// passing down the cumulative width occupied by the handles within
// |anchor_rect| plus the handle image height instead of |handle_image_size|.
// Perhaps we should also allow for some minimum padding.
if (menu_width > anchor_rect.width() - handle_image_size.width())
adjusted_anchor_rect.Inset(0, 0, 0, -handle_image_size.height());
SetAnchorRect(adjusted_anchor_rect);
BubbleDialogDelegateView::CreateBubble(this);
Widget* widget = GetWidget();
gfx::Rect bounds = widget->GetWindowBoundsInScreen();
gfx::Rect work_area = display::Screen::GetScreen()
->GetDisplayNearestPoint(bounds.origin())
.work_area();
if (!work_area.IsEmpty()) {
bounds.AdjustToFit(work_area);
widget->SetBounds(bounds);
}
// Using BubbleDialogDelegateView engages its CreateBubbleWidget() which
// invokes widget->StackAbove(context). That causes the bubble to stack
// _immediately_ above |context|; below any already-existing bubbles. That
// doesn't make sense for a menu, so put it back on top.
widget->StackAtTop();
widget->Show();
}
bool TouchSelectionMenuViews::IsMenuAvailable(
const ui::TouchSelectionMenuClient* client) {
DCHECK(client);
const auto is_enabled = [client](MenuCommand command) {
return client->IsCommandIdEnabled(command.command_id);
};
return std::any_of(std::cbegin(kMenuCommands), std::cend(kMenuCommands),
is_enabled);
}
void TouchSelectionMenuViews::CloseMenu() {
DisconnectOwner();
// Closing the widget will self-destroy this object.
Widget* widget = GetWidget();
if (widget && !widget->IsClosed())
widget->Close();
}
TouchSelectionMenuViews::~TouchSelectionMenuViews() = default;
void TouchSelectionMenuViews::CreateButtons() {
for (const auto& command : kMenuCommands) {
if (client_->IsCommandIdEnabled(command.command_id)) {
CreateButton(
l10n_util::GetStringUTF16(command.message_id),
base::BindRepeating(&TouchSelectionMenuViews::ButtonPressed,
base::Unretained(this), command.command_id));
}
}
// Finally, add ellipsis button.
CreateButton(u"...", base::BindRepeating(
[](TouchSelectionMenuViews* menu) {
menu->CloseMenu();
menu->client_->RunContextMenu();
},
base::Unretained(this)))
->SetID(ButtonViewId::kEllipsisButton);
InvalidateLayout();
}
LabelButton* TouchSelectionMenuViews::CreateButton(
const std::u16string& title,
Button::PressedCallback callback) {
std::u16string label = gfx::RemoveAccelerator(title);
auto* button = AddChildView(std::make_unique<LabelButton>(
std::move(callback), label, style::CONTEXT_TOUCH_MENU));
constexpr gfx::Size kMenuButtonMinSize = gfx::Size(63, 38);
button->SetMinSize(kMenuButtonMinSize);
button->SetHorizontalAlignment(gfx::ALIGN_CENTER);
return button;
}
void TouchSelectionMenuViews::DisconnectOwner() {
DCHECK(owner_);
owner_->menu_ = nullptr;
owner_ = nullptr;
}
void TouchSelectionMenuViews::OnPaint(gfx::Canvas* canvas) {
BubbleDialogDelegateView::OnPaint(canvas);
if (children().empty())
return;
// Draw separator bars.
for (auto i = children().cbegin(); i != std::prev(children().cend()); ++i) {
const View* child = *i;
int x = child->bounds().right() + kSpacingBetweenButtons / 2;
canvas->FillRect(gfx::Rect(x, 0, 1, child->height()),
GetNativeTheme()->GetSystemColor(
ui::NativeTheme::kColorId_SeparatorColor));
}
}
void TouchSelectionMenuViews::WindowClosing() {
DCHECK(!owner_ || owner_->menu_ == this);
BubbleDialogDelegateView::WindowClosing();
if (owner_)
DisconnectOwner();
}
void TouchSelectionMenuViews::ButtonPressed(int command,
const ui::Event& event) {
CloseMenu();
client_->ExecuteCommand(command, event.flags());
}
BEGIN_METADATA(TouchSelectionMenuViews, BubbleDialogDelegateView)
END_METADATA
} // namespace views
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