/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
// vim:cindent:tabstop=4:expandtab:shiftwidth=4:
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsLayoutDebugCLH.h"
#include "nsArray.h"
#include "nsString.h"
#include "plstr.h"
#include "nsCOMPtr.h"
#include "nsIWindowWatcher.h"
#include "nsIServiceManager.h"
#include "nsIDOMWindow.h"
#include "nsISupportsPrimitives.h"
#include "nsICommandLine.h"

nsLayoutDebugCLH::nsLayoutDebugCLH()
{
}

nsLayoutDebugCLH::~nsLayoutDebugCLH()
{
}

NS_IMPL_ISUPPORTS(nsLayoutDebugCLH, ICOMMANDLINEHANDLER)

NS_IMETHODIMP
nsLayoutDebugCLH::Handle(nsICommandLine* aCmdLine)
{
    nsresult rv;

    int32_t idx;
    rv = aCmdLine->FindFlag(NS_LITERAL_STRING("layoutdebug"), false, &idx);
    NS_ENSURE_SUCCESS(rv, rv);
    if (idx < 0)
      return NS_OK;

    int32_t length;
    aCmdLine->GetLength(&length);

    nsAutoString url;
    if (idx + 1 < length) {
        rv = aCmdLine->GetArgument(idx + 1, url);
        NS_ENSURE_SUCCESS(rv, rv);
        if (!url.IsEmpty() && url.CharAt(0) == '-')
            url.Truncate();
    }

    aCmdLine->RemoveArguments(idx, idx + !url.IsEmpty());

    nsCOMPtr<nsIMutableArray> argsArray = nsArray::Create();

    if (!url.IsEmpty())
    {
        nsCOMPtr<nsISupportsString> scriptableURL =
            do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID);
        NS_ENSURE_TRUE(scriptableURL, NS_ERROR_FAILURE);
  
        scriptableURL->SetData(url);
        argsArray->AppendElement(scriptableURL, /*weak =*/ false);
    }

    nsCOMPtr<nsIWindowWatcher> wwatch =
        do_GetService(NS_WINDOWWATCHER_CONTRACTID);
    NS_ENSURE_TRUE(wwatch, NS_ERROR_FAILURE);

    nsCOMPtr<mozIDOMWindowProxy> opened;
    wwatch->OpenWindow(nullptr, "chrome://layoutdebug/content/",
                       "_blank", "chrome,dialog=no,all", argsArray,
                       getter_AddRefs(opened));
    aCmdLine->SetPreventDefault(true);
    return NS_OK;
}

NS_IMETHODIMP
nsLayoutDebugCLH::GetHelpInfo(nsACString& aResult)
{
    aResult.AssignLiteral("  -layoutdebug [<url>] Start with Layout Debugger\n");
    return NS_OK;
}

