зеркало из https://github.com/mozilla/gecko-dev.git
360 строки
10 KiB
C++
360 строки
10 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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*
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* This Original Code has been modified by IBM Corporation.
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* Modifications made by IBM described herein are
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* Copyright (c) International Business Machines
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* Corporation, 2000
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*
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* Modifications to Mozilla code or documentation
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* identified per MPL Section 3.3
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*
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* Date Modified by Description of modification
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* 03/27/2000 IBM Corp. Added PR_CALLBACK for Optlink
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* use in OS2
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*/
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/*
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A package of routines shared by the XUL content code.
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*/
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#include "mozilla/ArrayUtils.h"
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#include "DateTimeFormat.h"
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#include "nsCOMPtr.h"
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#include "nsIContent.h"
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#include "nsIDocument.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMXULCommandDispatcher.h"
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#include "nsIDOMXULDocument.h"
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#include "nsIRDFNode.h"
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#include "nsIRDFService.h"
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#include "nsIServiceManager.h"
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#include "nsIURL.h"
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#include "nsXULContentUtils.h"
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#include "nsLayoutCID.h"
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#include "nsNameSpaceManager.h"
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#include "nsRDFCID.h"
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#include "nsString.h"
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#include "nsXPIDLString.h"
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#include "nsGkAtoms.h"
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#include "mozilla/Logging.h"
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#include "prtime.h"
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#include "rdf.h"
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#include "nsContentUtils.h"
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#include "nsIScriptableDateFormat.h"
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#include "nsICollation.h"
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#include "nsCollationCID.h"
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#include "nsILocale.h"
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#include "nsILocaleService.h"
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#include "nsIConsoleService.h"
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#include "nsEscape.h"
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using namespace mozilla;
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//------------------------------------------------------------------------
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nsIRDFService* nsXULContentUtils::gRDF;
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nsICollation *nsXULContentUtils::gCollation;
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extern LazyLogModule gXULTemplateLog;
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#define XUL_RESOURCE(ident, uri) nsIRDFResource* nsXULContentUtils::ident
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#define XUL_LITERAL(ident, val) nsIRDFLiteral* nsXULContentUtils::ident
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#include "nsXULResourceList.h"
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#undef XUL_RESOURCE
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#undef XUL_LITERAL
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//------------------------------------------------------------------------
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// Constructors n' stuff
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//
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nsresult
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nsXULContentUtils::Init()
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{
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static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID);
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nsresult rv = CallGetService(kRDFServiceCID, &gRDF);
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if (NS_FAILED(rv)) {
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return rv;
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}
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#define XUL_RESOURCE(ident, uri) \
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PR_BEGIN_MACRO \
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rv = gRDF->GetResource(NS_LITERAL_CSTRING(uri), &(ident)); \
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if (NS_FAILED(rv)) return rv; \
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PR_END_MACRO
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#define XUL_LITERAL(ident, val) \
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PR_BEGIN_MACRO \
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rv = gRDF->GetLiteral(val, &(ident)); \
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if (NS_FAILED(rv)) return rv; \
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PR_END_MACRO
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#include "nsXULResourceList.h"
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#undef XUL_RESOURCE
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#undef XUL_LITERAL
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return NS_OK;
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}
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nsresult
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nsXULContentUtils::Finish()
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{
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NS_IF_RELEASE(gRDF);
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#define XUL_RESOURCE(ident, uri) NS_IF_RELEASE(ident)
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#define XUL_LITERAL(ident, val) NS_IF_RELEASE(ident)
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#include "nsXULResourceList.h"
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#undef XUL_RESOURCE
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#undef XUL_LITERAL
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NS_IF_RELEASE(gCollation);
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return NS_OK;
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}
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nsICollation*
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nsXULContentUtils::GetCollation()
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{
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if (!gCollation) {
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nsresult rv;
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// get a locale service
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nsCOMPtr<nsILocaleService> localeService =
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do_GetService(NS_LOCALESERVICE_CONTRACTID, &rv);
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if (NS_SUCCEEDED(rv)) {
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nsCOMPtr<nsILocale> locale;
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rv = localeService->GetApplicationLocale(getter_AddRefs(locale));
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if (NS_SUCCEEDED(rv) && locale) {
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nsCOMPtr<nsICollationFactory> colFactory =
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do_CreateInstance(NS_COLLATIONFACTORY_CONTRACTID);
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if (colFactory) {
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rv = colFactory->CreateCollation(locale, &gCollation);
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NS_ASSERTION(NS_SUCCEEDED(rv),
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"couldn't create collation instance");
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} else
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NS_ERROR("couldn't create instance of collation factory");
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} else
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NS_ERROR("unable to get application locale");
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} else
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NS_ERROR("couldn't get locale factory");
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}
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return gCollation;
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}
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//------------------------------------------------------------------------
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nsresult
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nsXULContentUtils::FindChildByTag(nsIContent* aElement,
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int32_t aNameSpaceID,
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nsIAtom* aTag,
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nsIContent** aResult)
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{
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for (nsIContent* child = aElement->GetFirstChild();
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child;
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child = child->GetNextSibling()) {
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if (child->NodeInfo()->Equals(aTag, aNameSpaceID)) {
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NS_ADDREF(*aResult = child);
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return NS_OK;
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}
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}
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*aResult = nullptr;
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return NS_RDF_NO_VALUE; // not found
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}
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/*
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Note: this routine is similar, yet distinctly different from, nsBookmarksService::GetTextForNode
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*/
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nsresult
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nsXULContentUtils::GetTextForNode(nsIRDFNode* aNode, nsAString& aResult)
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{
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if (! aNode) {
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aResult.Truncate();
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return NS_OK;
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}
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nsresult rv;
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// Literals are the most common, so try these first.
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nsCOMPtr<nsIRDFLiteral> literal = do_QueryInterface(aNode);
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if (literal) {
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const char16_t* p;
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rv = literal->GetValueConst(&p);
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if (NS_FAILED(rv)) return rv;
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aResult = p;
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return NS_OK;
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}
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nsCOMPtr<nsIRDFDate> dateLiteral = do_QueryInterface(aNode);
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if (dateLiteral) {
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PRTime value;
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rv = dateLiteral->GetValue(&value);
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if (NS_FAILED(rv)) return rv;
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nsAutoString str;
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rv = DateTimeFormat::FormatPRTime(kDateFormatShort,
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kTimeFormatSeconds,
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value,
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str);
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aResult.Assign(str);
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if (NS_FAILED(rv)) return rv;
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return NS_OK;
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}
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nsCOMPtr<nsIRDFInt> intLiteral = do_QueryInterface(aNode);
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if (intLiteral) {
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int32_t value;
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rv = intLiteral->GetValue(&value);
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if (NS_FAILED(rv)) return rv;
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aResult.Truncate();
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nsAutoString intStr;
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intStr.AppendInt(value, 10);
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aResult.Append(intStr);
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return NS_OK;
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}
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nsCOMPtr<nsIRDFResource> resource = do_QueryInterface(aNode);
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if (resource) {
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const char* p;
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rv = resource->GetValueConst(&p);
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if (NS_FAILED(rv)) return rv;
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CopyUTF8toUTF16(p, aResult);
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return NS_OK;
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}
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NS_ERROR("not a resource or a literal");
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return NS_ERROR_UNEXPECTED;
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}
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nsresult
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nsXULContentUtils::GetResource(int32_t aNameSpaceID, nsIAtom* aAttribute, nsIRDFResource** aResult)
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{
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// construct a fully-qualified URI from the namespace/tag pair.
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NS_PRECONDITION(aAttribute != nullptr, "null ptr");
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if (! aAttribute)
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return NS_ERROR_NULL_POINTER;
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return GetResource(aNameSpaceID, nsDependentAtomString(aAttribute),
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aResult);
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}
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nsresult
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nsXULContentUtils::GetResource(int32_t aNameSpaceID, const nsAString& aAttribute, nsIRDFResource** aResult)
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{
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// construct a fully-qualified URI from the namespace/tag pair.
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// XXX should we allow nodes with no namespace???
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//NS_PRECONDITION(aNameSpaceID != kNameSpaceID_Unknown, "no namespace");
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//if (aNameSpaceID == kNameSpaceID_Unknown)
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// return NS_ERROR_UNEXPECTED;
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nsresult rv;
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char16_t buf[256];
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nsFixedString uri(buf, ArrayLength(buf), 0);
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if (aNameSpaceID != kNameSpaceID_Unknown && aNameSpaceID != kNameSpaceID_None) {
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rv = nsContentUtils::NameSpaceManager()->GetNameSpaceURI(aNameSpaceID, uri);
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// XXX ignore failure; treat as "no namespace"
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}
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// XXX check to see if we need to insert a '/' or a '#'. Oy.
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if (!uri.IsEmpty() && uri.Last() != '#' && uri.Last() != '/' && aAttribute.First() != '#')
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uri.Append(char16_t('#'));
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uri.Append(aAttribute);
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rv = gRDF->GetUnicodeResource(uri, aResult);
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NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get resource");
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if (NS_FAILED(rv)) return rv;
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return NS_OK;
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}
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nsresult
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nsXULContentUtils::SetCommandUpdater(nsIDocument* aDocument, nsIContent* aElement)
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{
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// Deal with setting up a 'commandupdater'. Pulls the 'events' and
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// 'targets' attributes off of aElement, and adds it to the
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// document's command dispatcher.
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NS_PRECONDITION(aDocument != nullptr, "null ptr");
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if (! aDocument)
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return NS_ERROR_NULL_POINTER;
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NS_PRECONDITION(aElement != nullptr, "null ptr");
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if (! aElement)
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return NS_ERROR_NULL_POINTER;
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nsresult rv;
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nsCOMPtr<nsIDOMXULDocument> xuldoc = do_QueryInterface(aDocument);
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NS_ASSERTION(xuldoc != nullptr, "not a xul document");
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if (! xuldoc)
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return NS_ERROR_UNEXPECTED;
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nsCOMPtr<nsIDOMXULCommandDispatcher> dispatcher;
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rv = xuldoc->GetCommandDispatcher(getter_AddRefs(dispatcher));
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NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get dispatcher");
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if (NS_FAILED(rv)) return rv;
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NS_ASSERTION(dispatcher != nullptr, "no dispatcher");
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if (! dispatcher)
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return NS_ERROR_UNEXPECTED;
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nsAutoString events;
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aElement->GetAttr(kNameSpaceID_None, nsGkAtoms::events, events);
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if (events.IsEmpty())
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events.Assign('*');
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nsAutoString targets;
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aElement->GetAttr(kNameSpaceID_None, nsGkAtoms::targets, targets);
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if (targets.IsEmpty())
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targets.Assign('*');
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nsCOMPtr<nsIDOMElement> domelement = do_QueryInterface(aElement);
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NS_ASSERTION(domelement != nullptr, "not a DOM element");
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if (! domelement)
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return NS_ERROR_UNEXPECTED;
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rv = dispatcher->AddCommandUpdater(domelement, events, targets);
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if (NS_FAILED(rv)) return rv;
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return NS_OK;
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}
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void
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nsXULContentUtils::LogTemplateError(const char* aStr)
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{
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nsAutoString message;
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message.AssignLiteral("Error parsing template: ");
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message.Append(NS_ConvertUTF8toUTF16(aStr).get());
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nsCOMPtr<nsIConsoleService> cs = do_GetService(NS_CONSOLESERVICE_CONTRACTID);
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if (cs) {
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cs->LogStringMessage(message.get());
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MOZ_LOG(gXULTemplateLog, LogLevel::Info, ("Error parsing template: %s", aStr));
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}
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}
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