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// Copyright 2019 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/metrics/browser_activity_watcher.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/browser_list_observer.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
BrowserActivityWatcher::BrowserActivityWatcher(
const base::RepeatingClosure& on_browser_activity)
: on_browser_activity_(on_browser_activity) {
BrowserList::AddObserver(this);
for (Browser* browser : *BrowserList::GetInstance()) {
if (browser->tab_strip_model())
browser->tab_strip_model()->AddObserver(this);
}
}
BrowserActivityWatcher::~BrowserActivityWatcher() {
BrowserList::RemoveObserver(this);
}
void BrowserActivityWatcher::OnBrowserAdded(Browser* browser) {
if (browser->tab_strip_model())
browser->tab_strip_model()->AddObserver(this);
on_browser_activity_.Run();
}
void BrowserActivityWatcher::OnBrowserRemoved(Browser* browser) {
if (browser->tab_strip_model())
browser->tab_strip_model()->RemoveObserver(this);
on_browser_activity_.Run();
}
void BrowserActivityWatcher::OnTabStripModelChanged(
TabStripModel* tab_strip_model,
const TabStripModelChange& change,
const TabStripSelectionChange& selection) {
on_browser_activity_.Run();
}
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