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// Copyright 2013 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/ui/ash/launcher/browser_status_monitor.h"
#include "ash/shelf/shelf_util.h"
#include "ash/shell.h"
#include "ash/wm/window_util.h"
#include "base/stl_util.h"
#include "chrome/browser/ui/ash/launcher/browser_shortcut_launcher_item_controller.h"
#include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
#include "chrome/browser/ui/ash/launcher/launcher_item_util.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/settings_window_manager.h"
#include "chrome/browser/ui/settings_window_manager_observer.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/web_applications/web_app.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_observer.h"
#include "grit/ash_resources.h"
#include "ui/aura/window.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/gfx/screen.h"
#include "ui/wm/public/activation_client.h"
// This class monitors the WebContent of the all tab and notifies a navigation
// to the BrowserStatusMonitor.
class BrowserStatusMonitor::LocalWebContentsObserver
: public content::WebContentsObserver {
public:
LocalWebContentsObserver(content::WebContents* contents,
BrowserStatusMonitor* monitor)
: content::WebContentsObserver(contents),
monitor_(monitor) {}
virtual ~LocalWebContentsObserver() {}
// content::WebContentsObserver
virtual void DidNavigateMainFrame(
const content::LoadCommittedDetails& details,
const content::FrameNavigateParams& params) OVERRIDE {
Browser* browser = chrome::FindBrowserWithWebContents(web_contents());
ChromeLauncherController::AppState state =
ChromeLauncherController::APP_STATE_INACTIVE;
if (browser->window()->IsActive() &&
browser->tab_strip_model()->GetActiveWebContents() == web_contents())
state = ChromeLauncherController::APP_STATE_WINDOW_ACTIVE;
else if (browser->window()->IsActive())
state = ChromeLauncherController::APP_STATE_ACTIVE;
monitor_->UpdateAppItemState(web_contents(), state);
monitor_->UpdateBrowserItemState();
// Navigating may change the ShelfID associated with the WebContents.
if (browser->tab_strip_model()->GetActiveWebContents() == web_contents())
monitor_->SetShelfIDForBrowserWindowContents(browser, web_contents());
}
virtual void WebContentsDestroyed() OVERRIDE {
// We can only come here when there was a non standard termination like
// an app got un-installed while running, etc.
monitor_->WebContentsDestroyed(web_contents());
// |this| is gone now.
}
private:
BrowserStatusMonitor* monitor_;
DISALLOW_COPY_AND_ASSIGN(LocalWebContentsObserver);
};
// Observes any new settings windows and sets their shelf icon (since they
// are excluded from BrowserShortcutLauncherItem).
class BrowserStatusMonitor::SettingsWindowObserver
: public chrome::SettingsWindowManagerObserver {
public:
SettingsWindowObserver() {}
virtual ~SettingsWindowObserver() {}
// SettingsWindowManagerObserver
virtual void OnNewSettingsWindow(Browser* settings_browser) OVERRIDE {
CreateShelfItemForDialog(IDR_ASH_SHELF_ICON_SETTINGS,
settings_browser->window()->GetNativeWindow());
}
private:
DISALLOW_COPY_AND_ASSIGN(SettingsWindowObserver);
};
BrowserStatusMonitor::BrowserStatusMonitor(
ChromeLauncherController* launcher_controller)
: launcher_controller_(launcher_controller),
observed_activation_clients_(this),
observed_root_windows_(this),
settings_window_observer_(new SettingsWindowObserver) {
DCHECK(launcher_controller_);
BrowserList::AddObserver(this);
chrome::SettingsWindowManager::GetInstance()->AddObserver(
settings_window_observer_.get());
// This check needs for win7_aura. Without this, all tests in
// ChromeLauncherController will fail in win7_aura.
if (ash::Shell::HasInstance()) {
// We can't assume all RootWindows have the same ActivationClient.
// Add a RootWindow and its ActivationClient to the observed list.
aura::Window::Windows root_windows = ash::Shell::GetAllRootWindows();
aura::Window::Windows::const_iterator iter = root_windows.begin();
for (; iter != root_windows.end(); ++iter) {
// |observed_activation_clients_| can have the same activation client
// multiple times - which would be handled by the used
// |ScopedObserverWithDuplicatedSources|.
observed_activation_clients_.Add(
aura::client::GetActivationClient(*iter));
observed_root_windows_.Add(static_cast<aura::Window*>(*iter));
}
ash::Shell::GetInstance()->GetScreen()->AddObserver(this);
}
}
BrowserStatusMonitor::~BrowserStatusMonitor() {
// This check needs for win7_aura. Without this, all tests in
// ChromeLauncherController will fail in win7_aura.
if (ash::Shell::HasInstance())
ash::Shell::GetInstance()->GetScreen()->RemoveObserver(this);
BrowserList::RemoveObserver(this);
BrowserList* browser_list =
BrowserList::GetInstance(chrome::HOST_DESKTOP_TYPE_ASH);
for (BrowserList::const_iterator i = browser_list->begin();
i != browser_list->end(); ++i) {
OnBrowserRemoved(*i);
}
STLDeleteContainerPairSecondPointers(webcontents_to_observer_map_.begin(),
webcontents_to_observer_map_.end());
}
void BrowserStatusMonitor::UpdateAppItemState(
content::WebContents* contents,
ChromeLauncherController::AppState app_state) {
DCHECK(contents);
// It is possible to come here from Browser::SwapTabContent where the contents
// cannot be associated with a browser. A removal however should be properly
// processed.
Browser* browser = chrome::FindBrowserWithWebContents(contents);
if (app_state == ChromeLauncherController::APP_STATE_REMOVED ||
(browser && launcher_controller_->IsBrowserFromActiveUser(browser)))
launcher_controller_->UpdateAppState(contents, app_state);
}
void BrowserStatusMonitor::UpdateBrowserItemState() {
launcher_controller_->GetBrowserShortcutLauncherItemController()->
UpdateBrowserItemState();
}
void BrowserStatusMonitor::OnWindowActivated(aura::Window* gained_active,
aura::Window* lost_active) {
Browser* browser = NULL;
content::WebContents* contents_from_gained = NULL;
content::WebContents* contents_from_lost = NULL;
// Update active webcontents's app item state of |lost_active|, if existed.
if (lost_active) {
browser = chrome::FindBrowserWithWindow(lost_active);
if (browser)
contents_from_lost = browser->tab_strip_model()->GetActiveWebContents();
if (contents_from_lost) {
UpdateAppItemState(
contents_from_lost,
ChromeLauncherController::APP_STATE_INACTIVE);
}
}
// Update active webcontents's app item state of |gained_active|, if existed.
if (gained_active) {
browser = chrome::FindBrowserWithWindow(gained_active);
if (browser)
contents_from_gained = browser->tab_strip_model()->GetActiveWebContents();
if (contents_from_gained) {
UpdateAppItemState(
contents_from_gained,
ChromeLauncherController::APP_STATE_WINDOW_ACTIVE);
}
}
if (contents_from_lost || contents_from_gained)
UpdateBrowserItemState();
}
void BrowserStatusMonitor::OnWindowDestroyed(aura::Window* window) {
// Remove RootWindow and its ActivationClient from observed list.
observed_root_windows_.Remove(window);
observed_activation_clients_.Remove(
aura::client::GetActivationClient(window));
}
void BrowserStatusMonitor::OnBrowserAdded(Browser* browser) {
if (browser->host_desktop_type() != chrome::HOST_DESKTOP_TYPE_ASH)
return;
if (browser->is_type_popup() && browser->is_app()) {
// Note: A V1 application will set the tab strip observer when the app gets
// added to the shelf. This makes sure that in the multi user case we will
// only set the observer while the app item exists in the shelf.
AddV1AppToShelf(browser);
} else {
browser->tab_strip_model()->AddObserver(this);
}
}
void BrowserStatusMonitor::OnBrowserRemoved(Browser* browser) {
if (browser->host_desktop_type() != chrome::HOST_DESKTOP_TYPE_ASH)
return;
if (browser->is_type_popup() && browser->is_app())
RemoveV1AppFromShelf(browser);
else
browser->tab_strip_model()->RemoveObserver(this);
UpdateBrowserItemState();
}
void BrowserStatusMonitor::OnDisplayAdded(const gfx::Display& new_display) {
// Add a new RootWindow and its ActivationClient to observed list.
aura::Window* root_window = ash::Shell::GetInstance()->
display_controller()->GetRootWindowForDisplayId(new_display.id());
// When the primary root window's display get removed, the existing root
// window is taken over by the new display and the observer is already set.
if (!observed_root_windows_.IsObserving(root_window)) {
observed_root_windows_.Add(static_cast<aura::Window*>(root_window));
observed_activation_clients_.Add(
aura::client::GetActivationClient(root_window));
}
}
void BrowserStatusMonitor::OnDisplayRemoved(const gfx::Display& old_display) {
// When this is called, RootWindow of |old_display| is already removed.
// Instead, we can remove RootWindow and its ActivationClient in the
// OnWindowRemoved().
// Do nothing here.
}
void BrowserStatusMonitor::OnDisplayMetricsChanged(const gfx::Display&,
uint32_t) {
// Do nothing here.
}
void BrowserStatusMonitor::ActiveTabChanged(content::WebContents* old_contents,
content::WebContents* new_contents,
int index,
int reason) {
Browser* browser = NULL;
// Use |new_contents|. |old_contents| could be NULL.
DCHECK(new_contents);
browser = chrome::FindBrowserWithWebContents(new_contents);
if (browser && browser->host_desktop_type() != chrome::HOST_DESKTOP_TYPE_ASH)
return;
ChromeLauncherController::AppState state =
ChromeLauncherController::APP_STATE_INACTIVE;
// Update immediately on a tab change.
if (old_contents &&
(TabStripModel::kNoTab !=
browser->tab_strip_model()->GetIndexOfWebContents(old_contents)))
UpdateAppItemState(old_contents, state);
if (new_contents) {
state = browser->window()->IsActive() ?
ChromeLauncherController::APP_STATE_WINDOW_ACTIVE :
ChromeLauncherController::APP_STATE_ACTIVE;
UpdateAppItemState(new_contents, state);
UpdateBrowserItemState();
SetShelfIDForBrowserWindowContents(browser, new_contents);
}
}
void BrowserStatusMonitor::TabReplacedAt(TabStripModel* tab_strip_model,
content::WebContents* old_contents,
content::WebContents* new_contents,
int index) {
DCHECK(old_contents && new_contents);
Browser* browser = chrome::FindBrowserWithWebContents(new_contents);
if (browser && browser->host_desktop_type() != chrome::HOST_DESKTOP_TYPE_ASH)
return;
UpdateAppItemState(old_contents,
ChromeLauncherController::APP_STATE_REMOVED);
RemoveWebContentsObserver(old_contents);
ChromeLauncherController::AppState state =
ChromeLauncherController::APP_STATE_ACTIVE;
if (browser->window()->IsActive() &&
(tab_strip_model->GetActiveWebContents() == new_contents))
state = ChromeLauncherController::APP_STATE_WINDOW_ACTIVE;
UpdateAppItemState(new_contents, state);
UpdateBrowserItemState();
if (tab_strip_model->GetActiveWebContents() == new_contents)
SetShelfIDForBrowserWindowContents(browser, new_contents);
AddWebContentsObserver(new_contents);
}
void BrowserStatusMonitor::TabInsertedAt(content::WebContents* contents,
int index,
bool foreground) {
// An inserted tab is not active - ActiveTabChanged() will be called to
// activate. We initialize therefore with |APP_STATE_INACTIVE|.
UpdateAppItemState(contents,
ChromeLauncherController::APP_STATE_INACTIVE);
AddWebContentsObserver(contents);
}
void BrowserStatusMonitor::TabClosingAt(TabStripModel* tab_strip_mode,
content::WebContents* contents,
int index) {
UpdateAppItemState(contents,
ChromeLauncherController::APP_STATE_REMOVED);
RemoveWebContentsObserver(contents);
}
void BrowserStatusMonitor::WebContentsDestroyed(
content::WebContents* contents) {
UpdateAppItemState(contents, ChromeLauncherController::APP_STATE_REMOVED);
RemoveWebContentsObserver(contents);
}
void BrowserStatusMonitor::AddV1AppToShelf(Browser* browser) {
DCHECK(browser->is_type_popup() && browser->is_app());
browser->tab_strip_model()->AddObserver(this);
std::string app_id =
web_app::GetExtensionIdFromApplicationName(browser->app_name());
if (!app_id.empty()) {
browser_to_app_id_map_[browser] = app_id;
launcher_controller_->LockV1AppWithID(app_id);
}
}
void BrowserStatusMonitor::RemoveV1AppFromShelf(Browser* browser) {
DCHECK(browser->is_type_popup() && browser->is_app());
browser->tab_strip_model()->RemoveObserver(this);
if (browser_to_app_id_map_.find(browser) != browser_to_app_id_map_.end()) {
launcher_controller_->UnlockV1AppWithID(browser_to_app_id_map_[browser]);
browser_to_app_id_map_.erase(browser);
}
}
bool BrowserStatusMonitor::IsV1AppInShelf(Browser* browser) {
return browser_to_app_id_map_.find(browser) != browser_to_app_id_map_.end();
}
void BrowserStatusMonitor::AddWebContentsObserver(
content::WebContents* contents) {
if (webcontents_to_observer_map_.find(contents) ==
webcontents_to_observer_map_.end()) {
webcontents_to_observer_map_[contents] =
new LocalWebContentsObserver(contents, this);
}
}
void BrowserStatusMonitor::RemoveWebContentsObserver(
content::WebContents* contents) {
DCHECK(webcontents_to_observer_map_.find(contents) !=
webcontents_to_observer_map_.end());
delete webcontents_to_observer_map_[contents];
webcontents_to_observer_map_.erase(contents);
}
ash::ShelfID BrowserStatusMonitor::GetShelfIDForWebContents(
content::WebContents* contents) {
return launcher_controller_->GetShelfIDForWebContents(contents);
}
void BrowserStatusMonitor::SetShelfIDForBrowserWindowContents(
Browser* browser,
content::WebContents* web_contents) {
launcher_controller_->GetBrowserShortcutLauncherItemController()->
SetShelfIDForBrowserWindowContents(browser, web_contents);
}
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