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// Copyright 2012 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/extensions/window_controller_list.h"
#include <algorithm>
#include "base/containers/contains.h"
#include "base/observer_list.h"
#include "chrome/browser/extensions/api/tabs/windows_util.h"
#include "chrome/browser/extensions/window_controller_list_observer.h"
#include "chrome/common/extensions/api/windows.h"
#include "components/sessions/core/session_id.h"
#include "extensions/browser/extension_function.h"
#include "extensions/buildflags/buildflags.h"
#include "ui/base/base_window.h"
static_assert(BUILDFLAG(ENABLE_EXTENSIONS_CORE));
namespace extensions {
///////////////////////////////////////////////////////////////////////////////
// WindowControllerList
// static
WindowControllerList* WindowControllerList::GetInstance() {
return base::Singleton<WindowControllerList>::get();
}
WindowControllerList::WindowControllerList() = default;
WindowControllerList::~WindowControllerList() = default;
void WindowControllerList::AddExtensionWindow(WindowController* window) {
windows_.push_back(window);
for (auto& observer : observers_)
observer.OnWindowControllerAdded(window);
}
void WindowControllerList::RemoveExtensionWindow(WindowController* window) {
auto iter = std::ranges::find(windows_, window);
if (iter != windows_.end()) {
windows_.erase(iter);
for (auto& observer : observers_)
observer.OnWindowControllerRemoved(window);
}
}
void WindowControllerList::NotifyWindowBoundsChanged(WindowController* window) {
if (base::Contains(windows_, window)) {
for (auto& observer : observers_)
observer.OnWindowBoundsChanged(window);
}
}
void WindowControllerList::NotifyWindowFocusChanged(WindowController* window,
bool has_focus) {
if (base::Contains(windows_, window)) {
for (auto& observer : observers_) {
observer.OnWindowFocusChanged(window, has_focus);
}
}
}
void WindowControllerList::AddObserver(WindowControllerListObserver* observer) {
observers_.AddObserver(observer);
}
void WindowControllerList::RemoveObserver(
WindowControllerListObserver* observer) {
observers_.RemoveObserver(observer);
}
WindowController* WindowControllerList::FindWindowForFunctionByIdWithFilter(
const ExtensionFunction* function,
int id,
WindowController::TypeFilter filter) const {
for (auto iter = windows_.begin(); iter != windows_.end(); ++iter) {
if ((*iter)->GetWindowId() == id) {
if (windows_util::CanOperateOnWindow(function, *iter, filter))
return *iter;
return nullptr;
}
}
return nullptr;
}
WindowController* WindowControllerList::CurrentWindowForFunction(
ExtensionFunction* function) const {
return CurrentWindowForFunctionWithFilter(function,
WindowController::kNoWindowFilter);
}
WindowController* WindowControllerList::CurrentWindowForFunctionWithFilter(
ExtensionFunction* function,
WindowController::TypeFilter filter) const {
// Always prefer the focused window if available. If there is no focused
// window, prefer the window to which the sender window is logically parented.
// Since the browser window is not "focused" when an extension popup is open
// (because popup is hosted in a separate window, which is focused instead),
// we need to check for the logical parent window here. If neither of these
// are available, return the last window.
WindowController* last_window = nullptr;
WindowController* parent_window = nullptr;
for (const auto& controller : windows_) {
if (!windows_util::CanOperateOnWindow(function, controller, filter)) {
continue;
}
if (controller->window()->IsActive()) {
// If the window is focused, return it immediately.
return controller;
}
#if !BUILDFLAG(IS_ANDROID)
// TODO(crbug.com/371432155): Support on Android.
// windows_util::CalledFromChildWindow() checks native widgets for parents.
if (windows_util::CalledFromChildWindow(function, controller)) {
parent_window = controller;
}
#endif
last_window = controller;
}
return parent_window ? parent_window : last_window;
}
} // namespace extensions
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