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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
// 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 "mozIDOMWindow.h"
#include "nsArray.h"
#include "nsString.h"
#include "plstr.h"
#include "nsComponentManagerUtils.h"
#include "nsCOMPtr.h"
#include "nsIWindowWatcher.h"
#include "nsISupportsPrimitives.h"
#include "nsICommandLine.h"
#include "nsIURI.h"
#include "nsServiceManagerUtils.h"
nsLayoutDebugCLH::nsLayoutDebugCLH() = default;
nsLayoutDebugCLH::~nsLayoutDebugCLH() = default;
NS_IMPL_ISUPPORTS(nsLayoutDebugCLH, ICOMMANDLINEHANDLER)
static nsresult HandleFlagWithOptionalArgument(nsICommandLine* aCmdLine,
const nsAString& aName,
const nsAString& aDefaultValue,
nsAString& aValue,
bool& aFlagPresent) {
aValue.Truncate();
aFlagPresent = false;
nsresult rv;
int32_t idx;
rv = aCmdLine->FindFlag(aName, false, &idx);
NS_ENSURE_SUCCESS(rv, rv);
if (idx < 0) return NS_OK;
aFlagPresent = true;
int32_t length;
aCmdLine->GetLength(&length);
bool argPresent = false;
if (idx + 1 < length) {
rv = aCmdLine->GetArgument(idx + 1, aValue);
NS_ENSURE_SUCCESS(rv, rv);
if (!aValue.IsEmpty() && aValue.CharAt(0) == '-') {
aValue.Truncate();
} else {
argPresent = true;
}
}
if (!argPresent) {
aValue = aDefaultValue;
}
return aCmdLine->RemoveArguments(idx, idx + argPresent);
}
static nsresult HandleFlagWithOptionalArgument(nsICommandLine* aCmdLine,
const nsAString& aName,
double aDefaultValue,
double& aValue,
bool& aFlagPresent) {
nsresult rv;
nsString s;
rv =
HandleFlagWithOptionalArgument(aCmdLine, aName, u"0"_ns, s, aFlagPresent);
NS_ENSURE_SUCCESS(rv, rv);
if (!aFlagPresent) {
aValue = 0.0;
return NS_OK;
}
aValue = s.ToDouble(&rv);
return rv;
}
static nsresult AppendArg(nsIMutableArray* aArray, const nsAString& aString) {
nsCOMPtr<nsISupportsString> s =
do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID);
NS_ENSURE_TRUE(s, NS_ERROR_FAILURE);
s->SetData(aString);
return aArray->AppendElement(s);
}
NS_IMETHODIMP
nsLayoutDebugCLH::Handle(nsICommandLine* aCmdLine) {
nsresult rv;
bool flagPresent;
nsString url;
bool autoclose = false;
double delay = 0.0;
bool captureProfile = false;
nsString profileFilename;
bool paged = false;
rv = HandleFlagWithOptionalArgument(aCmdLine, u"layoutdebug"_ns,
u"about:blank"_ns, url, flagPresent);
NS_ENSURE_SUCCESS(rv, rv);
if (!flagPresent) {
return NS_OK;
}
rv = HandleFlagWithOptionalArgument(aCmdLine, u"autoclose"_ns, 0.0, delay,
autoclose);
NS_ENSURE_SUCCESS(rv, rv);
rv = HandleFlagWithOptionalArgument(aCmdLine, u"capture-profile"_ns,
u"profile.json"_ns, profileFilename,
captureProfile);
NS_ENSURE_SUCCESS(rv, rv);
rv = aCmdLine->HandleFlag(u"paged"_ns, false, &paged);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIMutableArray> argsArray = nsArray::Create();
nsCOMPtr<nsIURI> uri;
nsAutoCString resolvedSpec;
rv = aCmdLine->ResolveURI(url, getter_AddRefs(uri));
NS_ENSURE_SUCCESS(rv, rv);
rv = uri->GetSpec(resolvedSpec);
NS_ENSURE_SUCCESS(rv, rv);
rv = AppendArg(argsArray, NS_ConvertUTF8toUTF16(resolvedSpec));
NS_ENSURE_SUCCESS(rv, rv);
if (autoclose) {
nsString arg;
arg.AppendPrintf("autoclose=%f", delay);
rv = AppendArg(argsArray, arg);
NS_ENSURE_SUCCESS(rv, rv);
}
if (captureProfile) {
nsString arg;
arg.AppendLiteral("profile=");
arg.Append(profileFilename);
rv = AppendArg(argsArray, arg);
NS_ENSURE_SUCCESS(rv, rv);
}
if (paged) {
rv = AppendArg(argsArray, u"paged"_ns);
NS_ENSURE_SUCCESS(rv, rv);
}
nsCOMPtr<nsIWindowWatcher> wwatch =
do_GetService(NS_WINDOWWATCHER_CONTRACTID);
NS_ENSURE_TRUE(wwatch, NS_ERROR_FAILURE);
nsCOMPtr<mozIDOMWindowProxy> opened;
wwatch->OpenWindow(
nullptr, "chrome://layoutdebug/content/layoutdebug.xhtml"_ns, "_blank"_ns,
"chrome,dialog=no,all"_ns, 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"
" --autoclose [<seconds>] Automatically close the Layout Debugger once\n"
" the page has loaded, after delaying the specified\n"
" number of seconds (which defaults to 0).\n"
" --capture-profile [<filename>] Capture a profile of the Layout\n"
" Debugger using the Gecko Profiler, and save the\n"
" profile to the specified file (which defaults to\n"
" profile.json).\n"
" --paged Layout the page in paginated mode.\n");
return NS_OK;
}
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