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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/chromeos/events/event_rewriter_controller.h"
#include "ash/shell.h"
#include "ui/aura/env.h"
#include "ui/aura/window_tree_host.h"
#include "ui/events/event_source.h"
namespace chromeos {
EventRewriterController::EventRewriterController() : initialized_(false) {
// Add the controller as an observer for new root windows.
aura::Env::GetInstance()->AddObserver(this);
}
EventRewriterController::~EventRewriterController() {
aura::Env::GetInstance()->RemoveObserver(this);
// Remove the rewriters from every root window EventSource and destroy them.
for (EventRewriters::iterator rewriter_iter = rewriters_.begin();
rewriter_iter != rewriters_.end();
++rewriter_iter) {
aura::Window::Windows windows = ash::Shell::GetAllRootWindows();
for (aura::Window::Windows::iterator window_iter = windows.begin();
window_iter != windows.end();
++window_iter) {
(*window_iter)->GetHost()->GetEventSource()->RemoveEventRewriter(
*rewriter_iter);
}
}
rewriters_.clear();
}
void EventRewriterController::AddEventRewriter(
scoped_ptr<ui::EventRewriter> rewriter) {
DCHECK(!initialized_);
rewriters_.push_back(rewriter.release());
}
void EventRewriterController::Init() {
DCHECK(!initialized_);
initialized_ = true;
// Add the rewriters to each existing root window EventSource.
aura::Window::Windows windows = ash::Shell::GetAllRootWindows();
for (aura::Window::Windows::iterator it = windows.begin();
it != windows.end();
++it) {
AddToEventSource((*it)->GetHost()->GetEventSource());
}
}
void EventRewriterController::OnHostInitialized(aura::WindowTreeHost* host) {
if (initialized_)
AddToEventSource(host->GetEventSource());
}
void EventRewriterController::AddToEventSource(ui::EventSource* source) {
DCHECK(source);
for (EventRewriters::iterator it = rewriters_.begin(); it != rewriters_.end();
++it) {
source->AddEventRewriter(*it);
}
}
} // namespace chromeos
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