diff options
Diffstat (limited to 'apps/app_window_geometry_cache.cc')
| -rw-r--r-- | apps/app_window_geometry_cache.cc | 336 |
1 files changed, 336 insertions, 0 deletions
diff --git a/apps/app_window_geometry_cache.cc b/apps/app_window_geometry_cache.cc new file mode 100644 index 0000000..deefc7a --- /dev/null +++ b/apps/app_window_geometry_cache.cc @@ -0,0 +1,336 @@ +// 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 "apps/app_window_geometry_cache.h" + +#include "base/bind.h" +#include "base/stl_util.h" +#include "base/strings/string_number_conversions.h" +#include "chrome/browser/chrome_notification_types.h" +#include "chrome/browser/profiles/incognito_helpers.h" +#include "chrome/browser/profiles/profile.h" +#include "components/browser_context_keyed_service/browser_context_dependency_manager.h" +#include "content/public/browser/notification_service.h" +#include "content/public/browser/notification_types.h" +#include "extensions/browser/extension_prefs.h" +#include "extensions/browser/extension_prefs_factory.h" +#include "extensions/browser/extensions_browser_client.h" +#include "extensions/common/extension.h" + +namespace { + +// The timeout in milliseconds before we'll persist window geometry to the +// StateStore. +const int kSyncTimeoutMilliseconds = 1000; + +} // namespace + +namespace apps { + +AppWindowGeometryCache::AppWindowGeometryCache( + Profile* profile, + extensions::ExtensionPrefs* prefs) + : prefs_(prefs), + sync_delay_(base::TimeDelta::FromMilliseconds(kSyncTimeoutMilliseconds)) { + registrar_.Add(this, + chrome::NOTIFICATION_EXTENSION_LOADED, + content::Source<Profile>(profile)); + registrar_.Add(this, + chrome::NOTIFICATION_EXTENSION_UNLOADED, + content::Source<Profile>(profile)); +} + +AppWindowGeometryCache::~AppWindowGeometryCache() {} + +// static +AppWindowGeometryCache* AppWindowGeometryCache::Get( + content::BrowserContext* context) { + return Factory::GetForContext(context, true /* create */); +} + +void AppWindowGeometryCache::SaveGeometry(const std::string& extension_id, + const std::string& window_id, + const gfx::Rect& bounds, + const gfx::Rect& screen_bounds, + ui::WindowShowState window_state) { + ExtensionData& extension_data = cache_[extension_id]; + + // If we don't have any unsynced changes and this is a duplicate of what's + // already in the cache, just ignore it. + if (extension_data[window_id].bounds == bounds && + extension_data[window_id].window_state == window_state && + extension_data[window_id].screen_bounds == screen_bounds && + !ContainsKey(unsynced_extensions_, extension_id)) + return; + + base::Time now = base::Time::Now(); + + extension_data[window_id].bounds = bounds; + extension_data[window_id].screen_bounds = screen_bounds; + extension_data[window_id].window_state = window_state; + extension_data[window_id].last_change = now; + + if (extension_data.size() > kMaxCachedWindows) { + ExtensionData::iterator oldest = extension_data.end(); + // Too many windows in the cache, find the oldest one to remove. + for (ExtensionData::iterator it = extension_data.begin(); + it != extension_data.end(); + ++it) { + // Don't expunge the window that was just added. + if (it->first == window_id) + continue; + + // If time is in the future, reset it to now to minimize weirdness. + if (it->second.last_change > now) + it->second.last_change = now; + + if (oldest == extension_data.end() || + it->second.last_change < oldest->second.last_change) + oldest = it; + } + extension_data.erase(oldest); + } + + unsynced_extensions_.insert(extension_id); + + // We don't use Reset() because the timer may not yet be running. + // (In that case Stop() is a no-op.) + sync_timer_.Stop(); + sync_timer_.Start( + FROM_HERE, sync_delay_, this, &AppWindowGeometryCache::SyncToStorage); +} + +void AppWindowGeometryCache::SyncToStorage() { + std::set<std::string> tosync; + tosync.swap(unsynced_extensions_); + for (std::set<std::string>::const_iterator it = tosync.begin(), + eit = tosync.end(); + it != eit; + ++it) { + const std::string& extension_id = *it; + const ExtensionData& extension_data = cache_[extension_id]; + + scoped_ptr<base::DictionaryValue> dict(new base::DictionaryValue); + for (ExtensionData::const_iterator it = extension_data.begin(), + eit = extension_data.end(); + it != eit; + ++it) { + base::DictionaryValue* value = new base::DictionaryValue; + const gfx::Rect& bounds = it->second.bounds; + const gfx::Rect& screen_bounds = it->second.screen_bounds; + DCHECK(!bounds.IsEmpty()); + DCHECK(!screen_bounds.IsEmpty()); + DCHECK(it->second.window_state != ui::SHOW_STATE_DEFAULT); + value->SetInteger("x", bounds.x()); + value->SetInteger("y", bounds.y()); + value->SetInteger("w", bounds.width()); + value->SetInteger("h", bounds.height()); + value->SetInteger("screen_bounds_x", screen_bounds.x()); + value->SetInteger("screen_bounds_y", screen_bounds.y()); + value->SetInteger("screen_bounds_w", screen_bounds.width()); + value->SetInteger("screen_bounds_h", screen_bounds.height()); + value->SetInteger("state", it->second.window_state); + value->SetString( + "ts", base::Int64ToString(it->second.last_change.ToInternalValue())); + dict->SetWithoutPathExpansion(it->first, value); + + FOR_EACH_OBSERVER( + Observer, + observers_, + OnGeometryCacheChanged(extension_id, it->first, bounds)); + } + + prefs_->SetGeometryCache(extension_id, dict.Pass()); + } +} + +bool AppWindowGeometryCache::GetGeometry(const std::string& extension_id, + const std::string& window_id, + gfx::Rect* bounds, + gfx::Rect* screen_bounds, + ui::WindowShowState* window_state) { + + std::map<std::string, ExtensionData>::const_iterator extension_data_it = + cache_.find(extension_id); + + // Not in the map means loading data for the extension didn't finish yet or + // the cache was not constructed until after the extension was loaded. + // Attempt to load from sync to address the latter case. + if (extension_data_it == cache_.end()) { + LoadGeometryFromStorage(extension_id); + extension_data_it = cache_.find(extension_id); + DCHECK(extension_data_it != cache_.end()); + } + + ExtensionData::const_iterator window_data_it = + extension_data_it->second.find(window_id); + + if (window_data_it == extension_data_it->second.end()) + return false; + + const WindowData& window_data = window_data_it->second; + + // Check for and do not return corrupt data. + if ((bounds && window_data.bounds.IsEmpty()) || + (screen_bounds && window_data.screen_bounds.IsEmpty()) || + (window_state && window_data.window_state == ui::SHOW_STATE_DEFAULT)) + return false; + + if (bounds) + *bounds = window_data.bounds; + if (screen_bounds) + *screen_bounds = window_data.screen_bounds; + if (window_state) + *window_state = window_data.window_state; + return true; +} + +void AppWindowGeometryCache::Shutdown() { SyncToStorage(); } + +AppWindowGeometryCache::WindowData::WindowData() + : window_state(ui::SHOW_STATE_DEFAULT) {} + +AppWindowGeometryCache::WindowData::~WindowData() {} + +void AppWindowGeometryCache::Observe( + int type, + const content::NotificationSource& source, + const content::NotificationDetails& details) { + switch (type) { + case chrome::NOTIFICATION_EXTENSION_LOADED: { + std::string extension_id = + content::Details<const extensions::Extension>(details).ptr()->id(); + LoadGeometryFromStorage(extension_id); + break; + } + case chrome::NOTIFICATION_EXTENSION_UNLOADED: { + std::string extension_id = + content::Details<const extensions::UnloadedExtensionInfo>(details) + .ptr() + ->extension->id(); + OnExtensionUnloaded(extension_id); + break; + } + default: + NOTREACHED(); + return; + } +} + +void AppWindowGeometryCache::SetSyncDelayForTests(int timeout_ms) { + sync_delay_ = base::TimeDelta::FromMilliseconds(timeout_ms); +} + +void AppWindowGeometryCache::LoadGeometryFromStorage( + const std::string& extension_id) { + ExtensionData& extension_data = cache_[extension_id]; + + const base::DictionaryValue* stored_windows = + prefs_->GetGeometryCache(extension_id); + if (!stored_windows) + return; + + for (base::DictionaryValue::Iterator it(*stored_windows); !it.IsAtEnd(); + it.Advance()) { + // If the cache already contains geometry for this window, don't + // overwrite that information since it is probably the result of an + // application starting up very quickly. + const std::string& window_id = it.key(); + ExtensionData::iterator cached_window = extension_data.find(window_id); + if (cached_window == extension_data.end()) { + const base::DictionaryValue* stored_window; + if (it.value().GetAsDictionary(&stored_window)) { + WindowData& window_data = extension_data[it.key()]; + + int i; + if (stored_window->GetInteger("x", &i)) + window_data.bounds.set_x(i); + if (stored_window->GetInteger("y", &i)) + window_data.bounds.set_y(i); + if (stored_window->GetInteger("w", &i)) + window_data.bounds.set_width(i); + if (stored_window->GetInteger("h", &i)) + window_data.bounds.set_height(i); + if (stored_window->GetInteger("screen_bounds_x", &i)) + window_data.screen_bounds.set_x(i); + if (stored_window->GetInteger("screen_bounds_y", &i)) + window_data.screen_bounds.set_y(i); + if (stored_window->GetInteger("screen_bounds_w", &i)) + window_data.screen_bounds.set_width(i); + if (stored_window->GetInteger("screen_bounds_h", &i)) + window_data.screen_bounds.set_height(i); + if (stored_window->GetInteger("state", &i)) { + window_data.window_state = static_cast<ui::WindowShowState>(i); + } + std::string ts_as_string; + if (stored_window->GetString("ts", &ts_as_string)) { + int64 ts; + if (base::StringToInt64(ts_as_string, &ts)) { + window_data.last_change = base::Time::FromInternalValue(ts); + } + } + } + } + } +} + +void AppWindowGeometryCache::OnExtensionUnloaded( + const std::string& extension_id) { + SyncToStorage(); + cache_.erase(extension_id); +} + +/////////////////////////////////////////////////////////////////////////////// +// Factory boilerplate + +// static +AppWindowGeometryCache* AppWindowGeometryCache::Factory::GetForContext( + content::BrowserContext* context, + bool create) { + return static_cast<AppWindowGeometryCache*>( + GetInstance()->GetServiceForBrowserContext(context, create)); +} + +AppWindowGeometryCache::Factory* +AppWindowGeometryCache::Factory::GetInstance() { + return Singleton<AppWindowGeometryCache::Factory>::get(); +} + +AppWindowGeometryCache::Factory::Factory() + : BrowserContextKeyedServiceFactory( + "AppWindowGeometryCache", + BrowserContextDependencyManager::GetInstance()) { + DependsOn(extensions::ExtensionPrefsFactory::GetInstance()); +} + +AppWindowGeometryCache::Factory::~Factory() {} + +BrowserContextKeyedService* +AppWindowGeometryCache::Factory::BuildServiceInstanceFor( + content::BrowserContext* context) const { + Profile* profile = Profile::FromBrowserContext(context); + return new AppWindowGeometryCache(profile, + extensions::ExtensionPrefs::Get(profile)); +} + +bool AppWindowGeometryCache::Factory::ServiceIsNULLWhileTesting() const { + return false; +} + +content::BrowserContext* +AppWindowGeometryCache::Factory::GetBrowserContextToUse( + content::BrowserContext* context) const { + return extensions::ExtensionsBrowserClient::Get()->GetOriginalContext( + context); +} + +void AppWindowGeometryCache::AddObserver(Observer* observer) { + observers_.AddObserver(observer); +} + +void AppWindowGeometryCache::RemoveObserver(Observer* observer) { + observers_.RemoveObserver(observer); +} + +} // namespace apps |