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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/tabs/public/tab_collection_storage.h"
#include <memory>
#include "base/notimplemented.h"
#include "components/tabs/public/tab_collection.h"
#include "components/tabs/public/tab_interface.h"
namespace tabs {
TabCollectionStorage::TabCollectionStorage(TabCollection& owner)
: owning_collection_(owner) {}
TabCollectionStorage::~TabCollectionStorage() = default;
bool TabCollectionStorage::ContainsTab(const TabInterface* tab) const {
CHECK(tab);
return GetIndexOfTab(tab).has_value();
}
TabInterface* TabCollectionStorage::GetTabAtIndex(size_t index) const {
CHECK(index < GetChildrenCount() && index >= 0);
CHECK(std::holds_alternative<std::unique_ptr<tabs::TabInterface>>(
children_[index]));
const std::unique_ptr<tabs::TabInterface>& tab =
std::get<std::unique_ptr<tabs::TabInterface>>(children_[index]);
return tab.get();
}
bool TabCollectionStorage::ContainsCollection(
TabCollection* tab_collection) const {
CHECK(tab_collection);
return GetIndexOfCollection(tab_collection).has_value();
}
TabInterface* TabCollectionStorage::AddTab(std::unique_ptr<TabInterface> tab,
size_t index) {
CHECK(index <= GetChildrenCount() && index >= 0);
CHECK(tab);
TabInterface* tab_ptr = tab.get();
children_.insert(children_.begin() + index, std::move(tab));
owning_collection_->OnTabAddedToTree();
return tab_ptr;
}
void TabCollectionStorage::MoveTab(TabInterface* tab, size_t dst_index) {
CHECK(tab);
CHECK(dst_index < GetChildrenCount() && dst_index >= 0);
std::unique_ptr<TabInterface> tab_to_move = RemoveTab(tab);
CHECK(tab_to_move);
AddTab(std::move(tab_to_move), dst_index);
}
std::unique_ptr<TabInterface> TabCollectionStorage::RemoveTab(
TabInterface* tab) {
CHECK(tab);
for (size_t i = 0; i < children_.size(); ++i) {
if (std::holds_alternative<std::unique_ptr<TabInterface>>(children_[i])) {
std::unique_ptr<TabInterface>& stored_tab =
std::get<std::unique_ptr<TabInterface>>(children_[i]);
if (stored_tab.get() == tab) {
auto removed_tab = std::move(stored_tab);
children_.erase(children_.begin() + i);
owning_collection_->OnTabRemovedFromTree();
return removed_tab;
}
}
}
NOTREACHED();
}
TabCollection* TabCollectionStorage::AddCollection(
std::unique_ptr<TabCollection> collection,
size_t index) {
CHECK(index <= GetChildrenCount() && index >= 0);
CHECK(collection);
TabCollection* collection_ptr = collection.get();
children_.insert(children_.begin() + index, std::move(collection));
owning_collection_->OnCollectionAddedToTree(collection_ptr);
return collection_ptr;
}
void TabCollectionStorage::MoveCollection(TabCollection* collection,
size_t dst_index) {
CHECK(collection);
CHECK(dst_index < GetChildrenCount() && dst_index >= 0);
std::unique_ptr<TabCollection> tab_collection_to_move =
RemoveCollection(collection);
CHECK(tab_collection_to_move);
AddCollection(std::move(tab_collection_to_move), dst_index);
}
std::unique_ptr<TabCollection> TabCollectionStorage::RemoveCollection(
TabCollection* collection) {
CHECK(collection);
for (size_t i = 0; i < children_.size(); ++i) {
if (std::holds_alternative<std::unique_ptr<TabCollection>>(children_[i])) {
std::unique_ptr<TabCollection>& stored_tab_collection =
std::get<std::unique_ptr<TabCollection>>(children_[i]);
if (stored_tab_collection.get() == collection) {
auto removed_tab_collection = std::move(stored_tab_collection);
children_.erase(children_.begin() + i);
owning_collection_->OnCollectionRemovedFromTree(
removed_tab_collection.get());
return removed_tab_collection;
}
}
}
NOTREACHED();
}
std::optional<size_t> TabCollectionStorage::GetIndexOfTab(
const TabInterface* const tab) const {
CHECK(tab);
const auto it = std::find_if(
children_.begin(), children_.end(), [tab](const auto& child) {
return std::holds_alternative<std::unique_ptr<TabInterface>>(child) &&
std::get<std::unique_ptr<TabInterface>>(child).get() == tab;
});
return it == children_.end() ? std::nullopt
: std::optional<size_t>(it - children_.begin());
}
std::optional<size_t> TabCollectionStorage::GetIndexOfCollection(
TabCollection* tab_collection) const {
CHECK(tab_collection);
const auto it = std::find_if(
children_.begin(), children_.end(), [tab_collection](const auto& child) {
return std::holds_alternative<std::unique_ptr<TabCollection>>(child) &&
std::get<std::unique_ptr<TabCollection>>(child).get() ==
tab_collection;
});
return it == children_.end() ? std::nullopt
: std::optional<size_t>(it - children_.begin());
}
size_t TabCollectionStorage::GetChildrenCount() const {
return children_.size();
}
} // namespace tabs
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