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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 "components/web_cache/renderer/web_cache_render_process_observer.h"
#include <limits>
#include "components/web_cache/common/web_cache_messages.h"
#include "third_party/WebKit/public/web/WebCache.h"
using blink::WebCache;
namespace web_cache {
namespace {
const size_t kUnitializedCacheCapacity = UINT_MAX;
}
WebCacheRenderProcessObserver::WebCacheRenderProcessObserver()
: clear_cache_pending_(false),
webkit_initialized_(false),
pending_cache_min_dead_capacity_(0),
pending_cache_max_dead_capacity_(0),
pending_cache_capacity_(kUnitializedCacheCapacity) {
}
WebCacheRenderProcessObserver::~WebCacheRenderProcessObserver() {
}
void WebCacheRenderProcessObserver::ExecutePendingClearCache() {
if (clear_cache_pending_ && webkit_initialized_) {
clear_cache_pending_ = false;
WebCache::clear();
}
}
bool WebCacheRenderProcessObserver::OnControlMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(WebCacheRenderProcessObserver, message)
IPC_MESSAGE_HANDLER(WebCacheMsg_SetCacheCapacities, OnSetCacheCapacities)
IPC_MESSAGE_HANDLER(WebCacheMsg_ClearCache, OnClearCache)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void WebCacheRenderProcessObserver::WebKitInitialized() {
webkit_initialized_ = true;
if (pending_cache_capacity_ != kUnitializedCacheCapacity) {
WebCache::setCapacities(pending_cache_min_dead_capacity_,
pending_cache_max_dead_capacity_,
pending_cache_capacity_);
}
}
void WebCacheRenderProcessObserver::OnRenderProcessShutdown() {
webkit_initialized_ = false;
}
void WebCacheRenderProcessObserver::OnSetCacheCapacities(
size_t min_dead_capacity,
size_t max_dead_capacity,
size_t capacity) {
if (!webkit_initialized_) {
pending_cache_min_dead_capacity_ = min_dead_capacity;
pending_cache_max_dead_capacity_ = max_dead_capacity;
pending_cache_capacity_ = capacity;
return;
}
WebCache::setCapacities(
min_dead_capacity, max_dead_capacity, capacity);
}
void WebCacheRenderProcessObserver::OnClearCache(bool on_navigation) {
if (on_navigation || !webkit_initialized_)
clear_cache_pending_ = true;
else
WebCache::clear();
}
} // namespace web_cache
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