C++ (Cpp) COMPtr::forwardListCount Examples

Example #1

File: DumpRenderTree.cpp Project: mikezit/Webkit_Code

static void dumpBackForwardList(IWebView* webView)
{
    ASSERT(webView);

    printf("\n============== Back Forward List ==============\n");

    COMPtr<IWebBackForwardList> bfList;
    if (FAILED(webView->backForwardList(&bfList)))
        return;

    // Print out all items in the list after prevTestBFItem, which was from the previous test
    // Gather items from the end of the list, the print them out from oldest to newest

    Vector<COMPtr<IUnknown> > itemsToPrint;

    int forwardListCount;
    if (FAILED(bfList->forwardListCount(&forwardListCount)))
        return;

    for (int i = forwardListCount; i > 0; --i) {
        COMPtr<IWebHistoryItem> item;
        if (FAILED(bfList->itemAtIndex(i, &item)))
            return;
        // something is wrong if the item from the last test is in the forward part of the b/f list
        assert(item != prevTestBFItem);
        COMPtr<IUnknown> itemUnknown;
        item->QueryInterface(&itemUnknown);
        itemsToPrint.append(itemUnknown);
    }
    
    COMPtr<IWebHistoryItem> currentItem;
    if (FAILED(bfList->currentItem(&currentItem)))
        return;

    assert(currentItem != prevTestBFItem);
    COMPtr<IUnknown> currentItemUnknown;
    currentItem->QueryInterface(&currentItemUnknown);
    itemsToPrint.append(currentItemUnknown);
    int currentItemIndex = itemsToPrint.size() - 1;

    int backListCount;
    if (FAILED(bfList->backListCount(&backListCount)))
        return;

    for (int i = -1; i >= -backListCount; --i) {
        COMPtr<IWebHistoryItem> item;
        if (FAILED(bfList->itemAtIndex(i, &item)))
            return;
        if (item == prevTestBFItem)
            break;
        COMPtr<IUnknown> itemUnknown;
        item->QueryInterface(&itemUnknown);
        itemsToPrint.append(itemUnknown);
    }

    for (int i = itemsToPrint.size() - 1; i >= 0; --i) {
        COMPtr<IWebHistoryItem> historyItemToPrint;
        itemsToPrint[i]->QueryInterface(&historyItemToPrint);
        dumpHistoryItem(historyItemToPrint.get(), 8, i == currentItemIndex);
    }

    printf("===============================================\n");
}