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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 "chrome/browser/ui/views/toolbar/split_tabs_button.h"
#include <memory>
#include "base/check_op.h"
#include "base/containers/fixed_flat_map.h"
#include "chrome/app/vector_icons/vector_icons.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_commands.h"
#include "chrome/browser/ui/browser_element_identifiers.h"
#include "chrome/browser/ui/browser_window/public/browser_window_interface.h"
#include "chrome/browser/ui/tabs/split_tab_menu_model.h"
#include "chrome/browser/ui/tabs/split_tab_util.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/ui/views/toolbar/toolbar_button.h"
#include "chrome/common/pref_names.h"
#include "chrome/grit/generated_resources.h"
#include "components/prefs/pref_service.h"
#include "components/tabs/public/split_tab_data.h"
#include "components/tabs/public/split_tab_visual_data.h"
#include "components/tabs/public/tab_interface.h"
#include "ui/base/interaction/element_identifier.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/menu_source_utils.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/gfx/vector_icon_types.h"
#include "ui/views/accessibility/view_accessibility.h"
#include "ui/views/view_class_properties.h"
DEFINE_CLASS_ELEMENT_IDENTIFIER_VALUE(SplitTabsToolbarButton,
kSplitTabButtonMenu);
SplitTabsToolbarButton::SplitTabsToolbarButton(Browser* browser)
: ToolbarButton(
base::BindRepeating(&SplitTabsToolbarButton::ButtonPressed,
base::Unretained(this)),
std::make_unique<SplitTabMenuModel>(browser->tab_strip_model()),
nullptr),
browser_(browser) {
SetProperty(views::kElementIdentifierKey,
kToolbarSplitTabsToolbarButtonElementId);
set_menu_identifier(kSplitTabButtonMenu);
GetViewAccessibility().SetName(
l10n_util::GetStringUTF16(IDS_ACCNAME_SPLIT_TABS));
pin_state_.Init(
prefs::kPinSplitTabButton, browser_->profile()->GetPrefs(),
base::BindRepeating(&SplitTabsToolbarButton::UpdateButtonVisibility,
base::Unretained(this)));
UpdateButtonVisibility();
browser->tab_strip_model()->AddObserver(this);
}
SplitTabsToolbarButton::~SplitTabsToolbarButton() {
browser_->tab_strip_model()->RemoveObserver(this);
}
bool SplitTabsToolbarButton::ShouldShowMenu() {
return browser_->tab_strip_model()->GetActiveTab()->IsSplit();
}
void SplitTabsToolbarButton::OnTabStripModelChanged(
TabStripModel* tab_strip_model,
const TabStripModelChange& change,
const TabStripSelectionChange& selection) {
if (selection.active_tab_changed()) {
UpdateButtonVisibility();
}
}
void SplitTabsToolbarButton::OnSplitTabChanged(const SplitTabChange& change) {
if (change.type == SplitTabChange::Type::kAdded ||
change.type == SplitTabChange::Type::kRemoved ||
change.type == SplitTabChange::Type::kContentsChanged) {
UpdateButtonVisibility();
}
}
void SplitTabsToolbarButton::ButtonPressed(const ui::Event& event) {
TabStripModel* const tab_strip_model = browser_->tab_strip_model();
tabs::TabInterface* const active_tab = tab_strip_model->GetActiveTab();
if (active_tab->IsSplit()) {
ShowDropDownMenu(ui::GetMenuSourceTypeForEvent(event));
} else {
chrome::NewSplitTab(browser_);
}
}
void SplitTabsToolbarButton::UpdateButtonVisibility() {
UpdateButtonIcon();
if (pin_state_.GetValue()) {
SetVisible(true);
return;
}
bool should_show_button = false;
TabStripModel* const tab_strip_model = browser_->tab_strip_model();
if (tab_strip_model) {
tabs::TabInterface* const active_tab = tab_strip_model->GetActiveTab();
should_show_button = active_tab && active_tab->IsSplit();
}
SetVisible(should_show_button);
}
void SplitTabsToolbarButton::UpdateButtonIcon() {
TabStripModel* const tab_strip_model = browser_->tab_strip_model();
tabs::TabInterface* const active_tab = tab_strip_model->GetActiveTab();
if (active_tab && active_tab->IsSplit()) {
const split_tabs::SplitTabActiveLocation location =
split_tabs::GetLastActiveTabLocation(tab_strip_model,
active_tab->GetSplit().value());
constexpr auto icons =
base::MakeFixedFlatMap<split_tabs::SplitTabActiveLocation,
const gfx::VectorIcon*>({
{split_tabs::SplitTabActiveLocation::kStart, &kSplitSceneLeftIcon},
{split_tabs::SplitTabActiveLocation::kEnd, &kSplitSceneRightIcon},
{split_tabs::SplitTabActiveLocation::kTop, &kSplitSceneUpIcon},
{split_tabs::SplitTabActiveLocation::kBottom, &kSplitSceneDownIcon},
});
SetVectorIcon(*icons.at(location));
} else {
SetVectorIcon(kSplitSceneIcon);
}
}
const std::optional<ToolbarButton::VectorIcons>&
SplitTabsToolbarButton::GetIconsForTesting() {
return GetVectorIcons();
}
BEGIN_METADATA(SplitTabsToolbarButton)
END_METADATA
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