Move ShellWindowGeometryCache into apps

chrome/browser/extensions/shell_window_geometry_cache.cc

-// Copyright (c) 2012 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/extensions/shell_window_geometry_cache.h"
-
-#include "base/bind.h"
-#include "base/stl_util.h"
-#include "base/strings/string_number_conversions.h"
-#include "chrome/browser/extensions/extension_prefs.h"
-#include "chrome/common/chrome_notification_types.h"
-#include "chrome/common/extensions/extension.h"
-#include "content/public/browser/notification_service.h"
-#include "content/public/browser/notification_types.h"
-
-namespace {
-
-// The timeout in milliseconds before we'll persist window geometry to the
-// StateStore.
-const int kSyncTimeoutMilliseconds = 1000;
-
-} // namespace
-
-namespace extensions {
-
-ShellWindowGeometryCache::ShellWindowGeometryCache(Profile* profile,
-                                                   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));
-}
-
-ShellWindowGeometryCache::~ShellWindowGeometryCache() {
-  SyncToStorage();
-}
-
-void ShellWindowGeometryCache::SaveGeometry(
-    const std::string& extension_id,
-    const std::string& window_id,
-    const gfx::Rect& 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 &&
-      !ContainsKey(unsynced_extensions_, extension_id))
-    return;
-
-  base::Time now = base::Time::Now();
-
-  extension_data[window_id].bounds = 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,
-                    &ShellWindowGeometryCache::SyncToStorage);
-}
-
-void ShellWindowGeometryCache::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;
-      value->SetInteger("x", bounds.x());
-      value->SetInteger("y", bounds.y());
-      value->SetInteger("w", bounds.width());
-      value->SetInteger("h", bounds.height());
-      value->SetInteger("state", it->second.window_state);
-      value->SetString(
-          "ts", base::Int64ToString(it->second.last_change.ToInternalValue()));
-      dict->SetWithoutPathExpansion(it->first, value);
-    }
-    prefs_->SetGeometryCache(extension_id, dict.Pass());
-  }
-}
-
-bool ShellWindowGeometryCache::GetGeometry(
-    const std::string& extension_id,
-    const std::string& window_id,
-    gfx::Rect* bounds,
-    ui::WindowShowState* window_state) const {
-
-  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.
-  if (extension_data_it == cache_.end())
-    return false;
-
-  ExtensionData::const_iterator window_data = extension_data_it->second.find(
-      window_id);
-
-  if (window_data == extension_data_it->second.end())
-    return false;
-
-  if (bounds)
-    *bounds = window_data->second.bounds;
-  if (window_state)
-    *window_state = window_data->second.window_state;
-  return true;
-}
-
-void ShellWindowGeometryCache::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 Extension>(details).ptr()->id();
-      OnExtensionLoaded(extension_id);
-      break;
-    }
-    case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
-      std::string extension_id =
-          content::Details<const UnloadedExtensionInfo>(details).
-              ptr()->extension->id();
-      OnExtensionUnloaded(extension_id);
-      break;
-    }
-    default:
-      NOTREACHED();
-      return;
-  }
-}
-
-void ShellWindowGeometryCache::SetSyncDelayForTests(int timeout_ms) {
-  sync_delay_ = base::TimeDelta::FromMilliseconds(timeout_ms);
-}
-
-void ShellWindowGeometryCache::OnExtensionLoaded(
-    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("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 ShellWindowGeometryCache::OnExtensionUnloaded(
-    const std::string& extension_id) {
-  SyncToStorage();
-  cache_.erase(extension_id);
-}
-
-} // namespace extensions