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/*
* Copyright (C) 2012 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "ewk_back_forward_list.h"
#include "WKAPICast.h"
#include "WKArray.h"
#include "WKBackForwardList.h"
#include "WKRetainPtr.h"
#include "ewk_back_forward_list_item_private.h"
#include <wtf/text/CString.h>
using namespace WebKit;
typedef HashMap<WKBackForwardListItemRef, Ewk_Back_Forward_List_Item*> ItemsMap;
/**
* \struct _Ewk_Back_Forward_List
* @brief Contains the Back Forward List data.
*/
struct _Ewk_Back_Forward_List {
WKRetainPtr<WKBackForwardListRef> wkList;
mutable ItemsMap wrapperCache;
_Ewk_Back_Forward_List(WKBackForwardListRef listRef)
: wkList(listRef)
{ }
~_Ewk_Back_Forward_List()
{
ItemsMap::iterator it = wrapperCache.begin();
ItemsMap::iterator end = wrapperCache.end();
for (; it != end; ++it)
ewk_back_forward_list_item_unref(it->second);
}
};
#define EWK_BACK_FORWARD_LIST_WK_GET_OR_RETURN(list, wkList_, ...) \
if (!(list)) { \
EINA_LOG_CRIT("list is NULL."); \
return __VA_ARGS__; \
} \
if (!(list)->wkList) { \
EINA_LOG_CRIT("list->wkList is NULL."); \
return __VA_ARGS__; \
} \
WKBackForwardListRef wkList_ = (list)->wkList.get()
static inline Ewk_Back_Forward_List_Item* addItemToWrapperCache(const Ewk_Back_Forward_List* list, WKBackForwardListItemRef wkItem)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(list, 0);
EINA_SAFETY_ON_NULL_RETURN_VAL(wkItem, 0);
Ewk_Back_Forward_List_Item* item = list->wrapperCache.get(wkItem);
if (!item) {
item = ewk_back_forward_list_item_new(wkItem);
list->wrapperCache.set(wkItem, item);
}
return item;
}
Ewk_Back_Forward_List_Item* ewk_back_forward_list_current_item_get(const Ewk_Back_Forward_List* list)
{
EWK_BACK_FORWARD_LIST_WK_GET_OR_RETURN(list, wkList, 0);
return addItemToWrapperCache(list, WKBackForwardListGetCurrentItem(wkList));
}
Ewk_Back_Forward_List_Item* ewk_back_forward_list_previous_item_get(const Ewk_Back_Forward_List* list)
{
EWK_BACK_FORWARD_LIST_WK_GET_OR_RETURN(list, wkList, 0);
return addItemToWrapperCache(list, WKBackForwardListGetBackItem(wkList));
}
Ewk_Back_Forward_List_Item* ewk_back_forward_list_next_item_get(const Ewk_Back_Forward_List* list)
{
EWK_BACK_FORWARD_LIST_WK_GET_OR_RETURN(list, wkList, 0);
return addItemToWrapperCache(list, WKBackForwardListGetForwardItem(wkList));
}
Ewk_Back_Forward_List_Item* ewk_back_forward_list_item_at_index_get(const Ewk_Back_Forward_List* list, int index)
{
EWK_BACK_FORWARD_LIST_WK_GET_OR_RETURN(list, wkList, 0);
return addItemToWrapperCache(list, WKBackForwardListGetItemAtIndex(wkList, index));
}
unsigned ewk_back_forward_list_count(Ewk_Back_Forward_List* list)
{
EWK_BACK_FORWARD_LIST_WK_GET_OR_RETURN(list, wkList, 0);
const unsigned currentItem = ewk_back_forward_list_current_item_get(list) ? 1 : 0;
return WKBackForwardListGetBackListCount(wkList) + WKBackForwardListGetForwardListCount(wkList) + currentItem;
}
/**
* @internal
* Updates items cache.
*/
void ewk_back_forward_list_changed(Ewk_Back_Forward_List* list, WKBackForwardListItemRef wkAddedItem, WKArrayRef wkRemovedItems)
{
if (wkAddedItem) // Checking also here to avoid EINA_SAFETY_ON_NULL_RETURN_VAL warnings.
addItemToWrapperCache(list, wkAddedItem); // Puts new item to the cache.
const size_t removedItemsSize = wkRemovedItems ? WKArrayGetSize(wkRemovedItems) : 0;
for (size_t i = 0; i < removedItemsSize; ++i) {
WKBackForwardListItemRef wkItem = static_cast<WKBackForwardListItemRef>(WKArrayGetItemAtIndex(wkRemovedItems, i));
if (Ewk_Back_Forward_List_Item* item = list->wrapperCache.take(wkItem))
ewk_back_forward_list_item_unref(item);
}
}
/**
* @internal
* Constructs a Ewk_Back_Forward_List from a WKBackForwardListRef.
*/
Ewk_Back_Forward_List* ewk_back_forward_list_new(WKBackForwardListRef wkBackForwardListRef)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(wkBackForwardListRef, 0);
return new Ewk_Back_Forward_List(wkBackForwardListRef);
}
/**
* @internal
* Frees a Ewk_Back_Forward_List object.
*/
void ewk_back_forward_list_free(Ewk_Back_Forward_List* list)
{
EINA_SAFETY_ON_NULL_RETURN(list);
delete list;
}
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