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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/views/controls/button/md_text_button_with_spinner.h"
#include <algorithm>
#include <memory>
#include <string>
#include <utility>
#include "base/notreached.h"
#include "base/time/time.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/ui_base_types.h"
#include "ui/color/color_id.h"
#include "ui/color/color_provider.h"
#include "ui/color/color_variant.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/controls/button/label_button.h"
#include "ui/views/controls/button/label_button_label.h"
#include "ui/views/controls/button/md_text_button.h"
#include "ui/views/style/typography.h"
namespace views {
constexpr int kSpinnerDiameter = 20;
constexpr int kSpinnerLabelSpacing = 8;
MdTextButtonWithSpinner::MdTextButtonWithSpinner(
Button::PressedCallback callback,
std::u16string_view text)
: MdTextButton(std::move(callback), text) {
spinner_ = AddChildView(std::make_unique<Throbber>(kSpinnerDiameter));
SetText(text);
}
MdTextButtonWithSpinner::~MdTextButtonWithSpinner() {
SetSpinnerVisible(false);
}
void MdTextButtonWithSpinner::SetSpinnerVisible(bool visible) {
spinner_visible_ = visible;
if (spinner_visible_) {
spinner_->Start();
} else {
spinner_->Stop();
}
PreferredSizeChanged();
}
bool MdTextButtonWithSpinner::GetSpinnerVisible() const {
return spinner_visible_;
}
gfx::Size MdTextButtonWithSpinner::CalculatePreferredSize(
const SizeBounds& available_size) const {
auto size = views::MdTextButton::CalculatePreferredSize(available_size);
if (GetSpinnerVisible()) {
size.set_width(size.width() + kSpinnerDiameter + kSpinnerLabelSpacing);
}
return size;
}
views::ProposedLayout MdTextButtonWithSpinner::CalculateProposedLayout(
const views::SizeBounds& size_bounds) const {
views::ProposedLayout layouts =
views::MdTextButton::CalculateProposedLayout(size_bounds);
if (!GetSpinnerVisible()) {
return layouts;
}
views::ChildLayout* label_layout = nullptr;
for (auto& child_layout : layouts.child_layouts) {
if (child_layout.child_view == label()) {
label_layout = &child_layout;
break;
}
}
DCHECK(label_layout);
const int button_content_width =
layouts.host_size.width() - GetInsets().left() - GetInsets().right();
const int label_preferred_width = label_layout->bounds.width();
// Calculate the total width of the spinner and label.
const int preferred_spinner_label_width =
kSpinnerDiameter + kSpinnerLabelSpacing + label_layout->bounds.width();
int label_width;
int spinner_label_width;
// Adjust width if the available space is smaller than the preferred space.
if (preferred_spinner_label_width > button_content_width) {
// Calculate the maximum width available for the label after accounting
// for the fixed spinner and spacing.
int max_available_label_width =
button_content_width - kSpinnerDiameter - kSpinnerLabelSpacing;
// Ensure the available width for the label is not negative.
label_width = std::max(0, max_available_label_width);
// Update combined width to reflect the shrunk label width.
spinner_label_width = kSpinnerDiameter + kSpinnerLabelSpacing + label_width;
} else {
label_width = label_preferred_width;
spinner_label_width = preferred_spinner_label_width;
}
// Account for different horizontal alignments.
int combo_start_x;
auto horizontal_alignment = GetHorizontalAlignment();
DCHECK_NE(gfx::ALIGN_TO_HEAD, horizontal_alignment);
switch (horizontal_alignment) {
case gfx::HorizontalAlignment::ALIGN_LEFT:
combo_start_x = GetInsets().left();
break;
case gfx::HorizontalAlignment::ALIGN_CENTER:
combo_start_x =
GetInsets().left() + (button_content_width - spinner_label_width) / 2;
break;
case gfx::HorizontalAlignment::ALIGN_RIGHT:
combo_start_x =
GetInsets().left() + button_content_width - spinner_label_width;
break;
case gfx::HorizontalAlignment::ALIGN_TO_HEAD:
NOTREACHED();
}
const int spinner_x = combo_start_x;
const int spinner_y =
label_layout->bounds.CenterPoint().y() - kSpinnerDiameter / 2;
const gfx::Rect spinner_bounds(spinner_x, spinner_y, kSpinnerDiameter,
kSpinnerDiameter);
// Adjust label position relative to spinner.
const int label_x = spinner_x + kSpinnerDiameter + kSpinnerLabelSpacing;
label_layout->bounds.set_x(label_x);
label_layout->bounds.set_width(label_width);
layouts.child_layouts.emplace_back(
const_cast<views::Throbber*>(spinner_.get()), GetSpinnerVisible(),
spinner_bounds, views::SizeBounds());
return layouts;
}
void MdTextButtonWithSpinner::UpdateSpinnerColor() {
style::TextStyle text_style = style::STYLE_PRIMARY;
if (GetStyle() == ui::ButtonStyle::kProminent) {
text_style = style::STYLE_DIALOG_BUTTON_DEFAULT;
} else if (GetStyle() == ui::ButtonStyle::kTonal) {
text_style = style::STYLE_DIALOG_BUTTON_TONAL;
}
if (GetState() == STATE_DISABLED) {
text_style = style::STYLE_DISABLED;
}
const auto& typography_provider = TypographyProvider::Get();
spinner_->SetColorId(
typography_provider.GetColorId(label()->GetTextContext(), text_style));
}
void MdTextButtonWithSpinner::UpdateColors() {
MdTextButton::UpdateColors();
UpdateSpinnerColor();
}
BEGIN_METADATA(MdTextButtonWithSpinner)
ADD_PROPERTY_METADATA(bool, SpinnerVisible);
END_METADATA
} // namespace views
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