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Diffstat (limited to '')
-rw-r--r-- | layout/tools/layout-debug/src/nsLayoutDebugCLH.cpp | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/layout/tools/layout-debug/src/nsLayoutDebugCLH.cpp b/layout/tools/layout-debug/src/nsLayoutDebugCLH.cpp new file mode 100644 index 0000000000..c50f3af44a --- /dev/null +++ b/layout/tools/layout-debug/src/nsLayoutDebugCLH.cpp @@ -0,0 +1,187 @@ +/* -*- 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 "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; +} |