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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "headless/lib/browser/headless_focus_client.h"
#include "base/observer_list.h"
#include "ui/aura/client/focus_change_observer.h"
#include "ui/aura/window.h"
namespace headless {
HeadlessFocusClient::HeadlessFocusClient() : focused_window_(nullptr) {}
HeadlessFocusClient::~HeadlessFocusClient() = default;
void HeadlessFocusClient::AddObserver(
aura::client::FocusChangeObserver* observer) {
focus_observers_.AddObserver(observer);
}
void HeadlessFocusClient::RemoveObserver(
aura::client::FocusChangeObserver* observer) {
focus_observers_.RemoveObserver(observer);
}
void HeadlessFocusClient::FocusWindow(aura::Window* window) {
if (window && !window->CanFocus())
return;
if (focused_window_) {
DCHECK(observation_manager_.IsObservingSource(focused_window_.get()));
observation_manager_.Reset();
}
aura::Window* old_focused_window = focused_window_;
focused_window_ = window;
if (focused_window_)
observation_manager_.Observe(focused_window_.get());
for (aura::client::FocusChangeObserver& observer : focus_observers_)
observer.OnWindowFocused(focused_window_, old_focused_window);
aura::client::FocusChangeObserver* observer =
aura::client::GetFocusChangeObserver(old_focused_window);
if (observer)
observer->OnWindowFocused(focused_window_, old_focused_window);
observer = aura::client::GetFocusChangeObserver(focused_window_);
if (observer)
observer->OnWindowFocused(focused_window_, old_focused_window);
}
void HeadlessFocusClient::ResetFocusWithinActiveWindow(aura::Window* window) {
if (!window->Contains(focused_window_))
FocusWindow(window);
}
aura::Window* HeadlessFocusClient::GetFocusedWindow() {
return focused_window_;
}
void HeadlessFocusClient::OnWindowDestroying(aura::Window* window) {
DCHECK_EQ(window, focused_window_);
FocusWindow(NULL);
}
} // namespace headless
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