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pjs/dom/base/nsLocation.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=80: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Travis Bogard <travis@netscape.com>
* Pierre Phaneuf <pp@ludusdesign.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsGlobalWindow.h"
#include "nsIScriptSecurityManager.h"
#include "nsIScriptContext.h"
#include "nsIDocShell.h"
#include "nsIDocShellLoadInfo.h"
#include "nsIWebNavigation.h"
#include "nsCDefaultURIFixup.h"
#include "nsIURIFixup.h"
#include "nsIURL.h"
#include "nsIJARURI.h"
#include "nsIIOService.h"
#include "nsIServiceManager.h"
#include "nsNetUtil.h"
#include "plstr.h"
#include "prprf.h"
#include "prmem.h"
#include "nsCOMPtr.h"
#include "nsEscape.h"
#include "nsJSUtils.h"
#include "nsIDOMWindow.h"
#include "nsIDOMDocument.h"
#include "nsIDocument.h"
#include "nsIPresShell.h"
#include "nsPresContext.h"
#include "nsIJSContextStack.h"
#include "nsXPIDLString.h"
#include "nsDOMError.h"
#include "nsDOMClassInfo.h"
#include "nsCRT.h"
#include "nsIProtocolHandler.h"
#include "nsReadableUtils.h"
#include "nsITextToSubURI.h"
#include "nsContentUtils.h"
#include "nsJSUtils.h"
static nsresult
GetContextFromStack(nsIJSContextStack *aStack, JSContext **aContext)
{
nsCOMPtr<nsIJSContextStackIterator>
iterator(do_CreateInstance("@mozilla.org/js/xpc/ContextStackIterator;1"));
NS_ENSURE_TRUE(iterator, NS_ERROR_FAILURE);
nsresult rv = iterator->Reset(aStack);
NS_ENSURE_SUCCESS(rv, rv);
PRBool done;
while (NS_SUCCEEDED(iterator->Done(&done)) && !done) {
rv = iterator->Prev(aContext);
NS_ASSERTION(NS_SUCCEEDED(rv), "Broken iterator implementation");
// Consider a null context the end of the line.
if (!*aContext) {
break;
}
if (nsJSUtils::GetDynamicScriptContext(*aContext)) {
return NS_OK;
}
}
*aContext = nsnull;
return NS_OK;
}
static nsresult
GetDocumentCharacterSetForURI(const nsAString& aHref, nsACString& aCharset)
{
aCharset.Truncate();
nsresult rv;
nsCOMPtr<nsIJSContextStack> stack(do_GetService("@mozilla.org/js/xpc/ContextStack;1", &rv));
NS_ENSURE_SUCCESS(rv, rv);
JSContext *cx;
rv = GetContextFromStack(stack, &cx);
NS_ENSURE_SUCCESS(rv, rv);
if (cx) {
nsCOMPtr<nsIDOMWindow> window =
do_QueryInterface(nsJSUtils::GetDynamicScriptGlobal(cx));
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMDocument> domDoc;
rv = window->GetDocument(getter_AddRefs(domDoc));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDocument> doc(do_QueryInterface(domDoc));
if (doc) {
aCharset = doc->GetDocumentCharacterSet();
}
}
return NS_OK;
}
nsLocation::nsLocation(nsIDocShell *aDocShell)
{
mDocShell = do_GetWeakReference(aDocShell);
}
nsLocation::~nsLocation()
{
}
DOMCI_DATA(Location, nsLocation)
// QueryInterface implementation for nsLocation
NS_INTERFACE_MAP_BEGIN(nsLocation)
NS_INTERFACE_MAP_ENTRY(nsIDOMLocation)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMLocation)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(Location)
NS_INTERFACE_MAP_END
NS_IMPL_ADDREF(nsLocation)
NS_IMPL_RELEASE(nsLocation)
void
nsLocation::SetDocShell(nsIDocShell *aDocShell)
{
mDocShell = do_GetWeakReference(aDocShell);
}
nsIDocShell *
nsLocation::GetDocShell()
{
nsCOMPtr<nsIDocShell> docshell(do_QueryReferent(mDocShell));
return docshell;
}
// Try to get the the document corresponding to the given JSStackFrame.
static already_AddRefed<nsIDocument>
GetFrameDocument(JSContext *cx, JSStackFrame *fp)
{
if (!cx || !fp)
return nsnull;
JSObject* scope = JS_GetFrameScopeChain(cx, fp);
if (!scope)
return nsnull;
JSAutoEnterCompartment ac;
if (!ac.enter(cx, scope))
return nsnull;
nsCOMPtr<nsIDOMWindow> window =
do_QueryInterface(nsJSUtils::GetStaticScriptGlobal(cx, scope));
if (!window)
return nsnull;
// If it's a window, get its document.
nsCOMPtr<nsIDOMDocument> domDoc;
window->GetDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
return doc.forget();
}
nsresult
nsLocation::CheckURL(nsIURI* aURI, nsIDocShellLoadInfo** aLoadInfo)
{
*aLoadInfo = nsnull;
nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mDocShell));
NS_ENSURE_TRUE(docShell, NS_ERROR_NOT_AVAILABLE);
nsresult rv;
// Get JSContext from stack.
nsCOMPtr<nsIJSContextStack>
stack(do_GetService("@mozilla.org/js/xpc/ContextStack;1", &rv));
NS_ENSURE_SUCCESS(rv, rv);
JSContext *cx;
NS_ENSURE_SUCCESS(GetContextFromStack(stack, &cx), NS_ERROR_FAILURE);
nsCOMPtr<nsISupports> owner;
nsCOMPtr<nsIURI> sourceURI;
if (cx) {
// No cx means that there's no JS running, or at least no JS that
// was run through code that properly pushed a context onto the
// context stack (as all code that runs JS off of web pages
// does). We won't bother with security checks in this case, but
// we need to create the loadinfo etc.
// Get security manager.
nsCOMPtr<nsIScriptSecurityManager>
secMan(do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv));
NS_ENSURE_SUCCESS(rv, rv);
// Check to see if URI is allowed.
rv = secMan->CheckLoadURIFromScript(cx, aURI);
NS_ENSURE_SUCCESS(rv, rv);
// Now get the principal to use when loading the URI
// First, get the principal and frame.
JSStackFrame *fp;
nsIPrincipal* principal = secMan->GetCxSubjectPrincipalAndFrame(cx, &fp);
NS_ENSURE_TRUE(principal, NS_ERROR_FAILURE);
nsCOMPtr<nsIURI> principalURI;
principal->GetURI(getter_AddRefs(principalURI));
// Make the load's referrer reflect changes to the document's URI caused by
// push/replaceState, if possible. First, get the document corresponding to
// fp. If the document's original URI (i.e. its URI before
// push/replaceState) matches the principal's URI, use the document's
// current URI as the referrer. If they don't match, use the principal's
// URI.
nsCOMPtr<nsIDocument> frameDoc = GetFrameDocument(cx, fp);
nsCOMPtr<nsIURI> docOriginalURI, docCurrentURI;
if (frameDoc) {
docOriginalURI = frameDoc->GetOriginalURI();
docCurrentURI = frameDoc->GetDocumentURI();
}
PRBool urisEqual = PR_FALSE;
if (docOriginalURI && docCurrentURI && principalURI) {
principalURI->Equals(docOriginalURI, &urisEqual);
}
if (urisEqual) {
sourceURI = docCurrentURI;
}
else {
sourceURI = principalURI;
}
owner = do_QueryInterface(principal);
}
// Create load info
nsCOMPtr<nsIDocShellLoadInfo> loadInfo;
docShell->CreateLoadInfo(getter_AddRefs(loadInfo));
NS_ENSURE_TRUE(loadInfo, NS_ERROR_FAILURE);
loadInfo->SetOwner(owner);
if (sourceURI) {
loadInfo->SetReferrer(sourceURI);
}
loadInfo.swap(*aLoadInfo);
return NS_OK;
}
nsresult
nsLocation::GetURI(nsIURI** aURI, PRBool aGetInnermostURI)
{
*aURI = nsnull;
nsresult rv;
nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mDocShell));
nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(docShell, &rv));
if (NS_FAILED(rv)) {
return rv;
}
nsCOMPtr<nsIURI> uri;
rv = webNav->GetCurrentURI(getter_AddRefs(uri));
NS_ENSURE_SUCCESS(rv, rv);
// It is valid for docshell to return a null URI. Don't try to fixup
// if this happens.
if (!uri) {
return NS_OK;
}
if (aGetInnermostURI) {
nsCOMPtr<nsIJARURI> jarURI(do_QueryInterface(uri));
while (jarURI) {
jarURI->GetJARFile(getter_AddRefs(uri));
jarURI = do_QueryInterface(uri);
}
}
NS_ASSERTION(uri, "nsJARURI screwed up?");
nsCOMPtr<nsIURIFixup> urifixup(do_GetService(NS_URIFIXUP_CONTRACTID, &rv));
NS_ENSURE_SUCCESS(rv, rv);
return urifixup->CreateExposableURI(uri, aURI);
}
nsresult
nsLocation::GetWritableURI(nsIURI** aURI)
{
*aURI = nsnull;
nsCOMPtr<nsIURI> uri;
nsresult rv = GetURI(getter_AddRefs(uri));
if (NS_FAILED(rv) || !uri) {
return rv;
}
return uri->Clone(aURI);
}
nsresult
nsLocation::SetURI(nsIURI* aURI, PRBool aReplace)
{
nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mDocShell));
if (docShell) {
nsCOMPtr<nsIDocShellLoadInfo> loadInfo;
nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(docShell));
if(NS_FAILED(CheckURL(aURI, getter_AddRefs(loadInfo))))
return NS_ERROR_FAILURE;
if (aReplace) {
loadInfo->SetLoadType(nsIDocShellLoadInfo::loadStopContentAndReplace);
} else {
loadInfo->SetLoadType(nsIDocShellLoadInfo::loadStopContent);
}
return docShell->LoadURI(aURI, loadInfo,
nsIWebNavigation::LOAD_FLAGS_NONE, PR_TRUE);
}
return NS_OK;
}
NS_IMETHODIMP
nsLocation::GetHash(nsAString& aHash)
{
aHash.SetLength(0);
nsCOMPtr<nsIURI> uri;
nsresult rv = GetURI(getter_AddRefs(uri));
if (NS_FAILED(rv) || !uri) {
return rv;
}
nsCAutoString ref;
nsAutoString unicodeRef;
rv = uri->GetRef(ref);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsITextToSubURI> textToSubURI(
do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv));
if (NS_SUCCEEDED(rv)) {
nsCAutoString charset;
uri->GetOriginCharset(charset);
rv = textToSubURI->UnEscapeURIForUI(charset, ref, unicodeRef);
}
if (NS_FAILED(rv)) {
// Oh, well. No intl here!
NS_UnescapeURL(ref);
CopyASCIItoUTF16(ref, unicodeRef);
rv = NS_OK;
}
}
if (NS_SUCCEEDED(rv) && !unicodeRef.IsEmpty()) {
aHash.Assign(PRUnichar('#'));
aHash.Append(unicodeRef);
}
if (aHash == mCachedHash) {
// Work around ShareThis stupidly polling location.hash every
// 5ms all the time by handing out the same exact string buffer
// we handed out last time.
aHash = mCachedHash;
} else {
mCachedHash = aHash;
}
return rv;
}
NS_IMETHODIMP
nsLocation::SetHash(const nsAString& aHash)
{
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
if (NS_FAILED(rv) || !uri) {
return rv;
}
NS_ConvertUTF16toUTF8 hash(aHash);
if (hash.IsEmpty() || hash.First() != PRUnichar('#')) {
hash.Insert(PRUnichar('#'), 0);
}
rv = uri->SetRef(hash);
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
return rv;
}
NS_IMETHODIMP
nsLocation::GetHost(nsAString& aHost)
{
aHost.Truncate();
nsCOMPtr<nsIURI> uri;
nsresult result;
result = GetURI(getter_AddRefs(uri), PR_TRUE);
if (uri) {
nsCAutoString hostport;
result = uri->GetHostPort(hostport);
if (NS_SUCCEEDED(result)) {
AppendUTF8toUTF16(hostport, aHost);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsLocation::SetHost(const nsAString& aHost)
{
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
if (uri) {
rv = uri->SetHostPort(NS_ConvertUTF16toUTF8(aHost));
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
}
return rv;
}
NS_IMETHODIMP
nsLocation::GetHostname(nsAString& aHostname)
{
aHostname.Truncate();
nsCOMPtr<nsIURI> uri;
nsresult result;
result = GetURI(getter_AddRefs(uri), PR_TRUE);
if (uri) {
nsCAutoString host;
result = uri->GetHost(host);
if (NS_SUCCEEDED(result)) {
AppendUTF8toUTF16(host, aHostname);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsLocation::SetHostname(const nsAString& aHostname)
{
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
if (uri) {
rv = uri->SetHost(NS_ConvertUTF16toUTF8(aHostname));
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
}
return rv;
}
NS_IMETHODIMP
nsLocation::GetHref(nsAString& aHref)
{
aHref.Truncate();
nsCOMPtr<nsIURI> uri;
nsresult result;
result = GetURI(getter_AddRefs(uri));
if (uri) {
nsCAutoString uriString;
result = uri->GetSpec(uriString);
if (NS_SUCCEEDED(result)) {
AppendUTF8toUTF16(uriString, aHref);
}
}
return result;
}
NS_IMETHODIMP
nsLocation::SetHref(const nsAString& aHref)
{
nsAutoString oldHref;
nsresult rv = NS_OK;
// Get JSContext from stack.
nsCOMPtr<nsIJSContextStack>
stack(do_GetService("@mozilla.org/js/xpc/ContextStack;1", &rv));
if (NS_FAILED(rv))
return NS_ERROR_FAILURE;
JSContext *cx;
if (NS_FAILED(GetContextFromStack(stack, &cx)))
return NS_ERROR_FAILURE;
if (cx) {
rv = SetHrefWithContext(cx, aHref, PR_FALSE);
} else {
rv = GetHref(oldHref);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIURI> oldUri;
rv = NS_NewURI(getter_AddRefs(oldUri), oldHref);
if (oldUri) {
rv = SetHrefWithBase(aHref, oldUri, PR_FALSE);
}
}
}
return rv;
}
nsresult
nsLocation::SetHrefWithContext(JSContext* cx, const nsAString& aHref,
PRBool aReplace)
{
nsCOMPtr<nsIURI> base;
// Get the source of the caller
nsresult result = GetSourceBaseURL(cx, getter_AddRefs(base));
if (NS_FAILED(result)) {
return result;
}
return SetHrefWithBase(aHref, base, aReplace);
}
nsresult
nsLocation::SetHrefWithBase(const nsAString& aHref, nsIURI* aBase,
PRBool aReplace)
{
nsresult result;
nsCOMPtr<nsIURI> newUri;
nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mDocShell));
nsCAutoString docCharset;
if (NS_SUCCEEDED(GetDocumentCharacterSetForURI(aHref, docCharset)))
result = NS_NewURI(getter_AddRefs(newUri), aHref, docCharset.get(), aBase);
else
result = NS_NewURI(getter_AddRefs(newUri), aHref, nsnull, aBase);
if (newUri) {
/* Check with the scriptContext if it is currently processing a script tag.
* If so, this must be a <script> tag with a location.href in it.
* we want to do a replace load, in such a situation.
* In other cases, for example if a event handler or a JS timer
* had a location.href in it, we want to do a normal load,
* so that the new url will be appended to Session History.
* This solution is tricky. Hopefully it isn't going to bite
* anywhere else. This is part of solution for bug # 39938, 72197
*
*/
PRBool inScriptTag=PR_FALSE;
// Get JSContext from stack.
nsCOMPtr<nsIJSContextStack> stack(do_GetService("@mozilla.org/js/xpc/ContextStack;1", &result));
if (stack) {
JSContext *cx;
result = GetContextFromStack(stack, &cx);
if (cx) {
nsIScriptContext *scriptContext =
nsJSUtils::GetDynamicScriptContext(cx);
if (scriptContext) {
if (scriptContext->GetProcessingScriptTag()) {
// Now check to make sure that the script is running in our window,
// since we only want to replace if the location is set by a
// <script> tag in the same window. See bug 178729.
nsCOMPtr<nsIScriptGlobalObject> ourGlobal(do_GetInterface(docShell));
inScriptTag = (ourGlobal == scriptContext->GetGlobalObject());
}
}
} //cx
} // stack
return SetURI(newUri, aReplace || inScriptTag);
}
return result;
}
NS_IMETHODIMP
nsLocation::GetPathname(nsAString& aPathname)
{
aPathname.Truncate();
nsCOMPtr<nsIURI> uri;
nsresult result = NS_OK;
result = GetURI(getter_AddRefs(uri));
nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
if (url) {
nsCAutoString file;
result = url->GetFilePath(file);
if (NS_SUCCEEDED(result)) {
AppendUTF8toUTF16(file, aPathname);
}
}
return result;
}
NS_IMETHODIMP
nsLocation::SetPathname(const nsAString& aPathname)
{
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
if (uri) {
rv = uri->SetPath(NS_ConvertUTF16toUTF8(aPathname));
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
}
return rv;
}
NS_IMETHODIMP
nsLocation::GetPort(nsAString& aPort)
{
aPort.SetLength(0);
nsCOMPtr<nsIURI> uri;
nsresult result = NS_OK;
result = GetURI(getter_AddRefs(uri), PR_TRUE);
if (uri) {
PRInt32 port;
result = uri->GetPort(&port);
if (NS_SUCCEEDED(result) && -1 != port) {
nsAutoString portStr;
portStr.AppendInt(port);
aPort.Append(portStr);
}
// Don't propagate this exception to caller
result = NS_OK;
}
return result;
}
NS_IMETHODIMP
nsLocation::SetPort(const nsAString& aPort)
{
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
if (uri) {
// perhaps use nsReadingIterators at some point?
NS_ConvertUTF16toUTF8 portStr(aPort);
const char *buf = portStr.get();
PRInt32 port = -1;
if (buf) {
if (*buf == ':') {
port = atol(buf+1);
}
else {
port = atol(buf);
}
}
rv = uri->SetPort(port);
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
}
return rv;
}
NS_IMETHODIMP
nsLocation::GetProtocol(nsAString& aProtocol)
{
aProtocol.SetLength(0);
nsCOMPtr<nsIURI> uri;
nsresult result = NS_OK;
result = GetURI(getter_AddRefs(uri));
if (uri) {
nsCAutoString protocol;
result = uri->GetScheme(protocol);
if (NS_SUCCEEDED(result)) {
CopyASCIItoUTF16(protocol, aProtocol);
aProtocol.Append(PRUnichar(':'));
}
}
return result;
}
NS_IMETHODIMP
nsLocation::SetProtocol(const nsAString& aProtocol)
{
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
if (uri) {
rv = uri->SetScheme(NS_ConvertUTF16toUTF8(aProtocol));
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
}
return rv;
}
NS_IMETHODIMP
nsLocation::GetSearch(nsAString& aSearch)
{
aSearch.SetLength(0);
nsCOMPtr<nsIURI> uri;
nsresult result = NS_OK;
result = GetURI(getter_AddRefs(uri));
nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
if (url) {
nsCAutoString search;
result = url->GetQuery(search);
if (NS_SUCCEEDED(result) && !search.IsEmpty()) {
aSearch.Assign(PRUnichar('?'));
AppendUTF8toUTF16(search, aSearch);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsLocation::SetSearch(const nsAString& aSearch)
{
nsCOMPtr<nsIURI> uri;
nsresult rv = GetWritableURI(getter_AddRefs(uri));
nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
if (url) {
rv = url->SetQuery(NS_ConvertUTF16toUTF8(aSearch));
if (NS_SUCCEEDED(rv)) {
SetURI(uri);
}
}
return rv;
}
NS_IMETHODIMP
nsLocation::Reload(PRBool aForceget)
{
nsresult rv;
nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mDocShell));
nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(docShell));
nsCOMPtr<nsPIDOMWindow> window(do_GetInterface(docShell));
if (window && window->IsHandlingResizeEvent()) {
// location.reload() was called on a window that is handling a
// resize event. Sites do this since Netscape 4.x needed it, but
// we don't, and it's a horrible experience for nothing. In stead
// of reloading the page, just clear style data and reflow the
// page since some sites may use this trick to work around gecko
// reflow bugs, and this should have the same effect.
nsCOMPtr<nsIDocument> doc(do_QueryInterface(window->GetExtantDocument()));
nsIPresShell *shell;
nsPresContext *pcx;
if (doc && (shell = doc->GetShell()) && (pcx = shell->GetPresContext())) {
pcx->RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
}
return NS_OK;
}
if (webNav) {
PRUint32 reloadFlags = nsIWebNavigation::LOAD_FLAGS_NONE;
if (aForceget) {
reloadFlags = nsIWebNavigation::LOAD_FLAGS_BYPASS_CACHE |
nsIWebNavigation::LOAD_FLAGS_BYPASS_PROXY;
}
rv = webNav->Reload(reloadFlags);
if (rv == NS_BINDING_ABORTED) {
// This happens when we attempt to reload a POST result and the user says
// no at the "do you want to reload?" prompt. Don't propagate this one
// back to callers.
rv = NS_OK;
}
} else {
rv = NS_ERROR_FAILURE;
}
return rv;
}
NS_IMETHODIMP
nsLocation::Replace(const nsAString& aUrl)
{
nsresult rv = NS_OK;
// Get JSContext from stack.
nsCOMPtr<nsIJSContextStack>
stack(do_GetService("@mozilla.org/js/xpc/ContextStack;1"));
if (stack) {
JSContext *cx;
rv = GetContextFromStack(stack, &cx);
NS_ENSURE_SUCCESS(rv, rv);
if (cx) {
return SetHrefWithContext(cx, aUrl, PR_TRUE);
}
}
nsAutoString oldHref;
rv = GetHref(oldHref);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURI> oldUri;
rv = NS_NewURI(getter_AddRefs(oldUri), oldHref);
NS_ENSURE_SUCCESS(rv, rv);
return SetHrefWithBase(aUrl, oldUri, PR_TRUE);
}
NS_IMETHODIMP
nsLocation::Assign(const nsAString& aUrl)
{
nsAutoString oldHref;
nsresult result = NS_OK;
result = GetHref(oldHref);
if (NS_SUCCEEDED(result)) {
nsCOMPtr<nsIURI> oldUri;
result = NS_NewURI(getter_AddRefs(oldUri), oldHref);
if (oldUri) {
result = SetHrefWithBase(aUrl, oldUri, PR_FALSE);
}
}
return result;
}
NS_IMETHODIMP
nsLocation::ToString(nsAString& aReturn)
{
return GetHref(aReturn);
}
nsresult
nsLocation::GetSourceDocument(JSContext* cx, nsIDocument** aDocument)
{
// XXX Code duplicated from nsHTMLDocument
// XXX Tom said this reminded him of the "Six Degrees of
// Kevin Bacon" game. We try to get from here to there using
// whatever connections possible. The problem is that this
// could break if any of the connections along the way change.
// I wish there were a better way.
nsresult rv = NS_ERROR_FAILURE;
// We need to use the dynamically scoped global and assume that the
// current JSContext is a DOM context with a nsIScriptGlobalObject so
// that we can get the url of the caller.
// XXX This will fail on non-DOM contexts :(
nsCOMPtr<nsIDOMWindow> window =
do_QueryInterface(nsJSUtils::GetDynamicScriptGlobal(cx), &rv);
if (window) {
nsCOMPtr<nsIDOMDocument> domDoc;
rv = window->GetDocument(getter_AddRefs(domDoc));
if (domDoc) {
return CallQueryInterface(domDoc, aDocument);
}
} else {
*aDocument = nsnull;
}
return rv;
}
nsresult
nsLocation::GetSourceBaseURL(JSContext* cx, nsIURI** sourceURL)
{
nsCOMPtr<nsIDocument> doc;
nsresult rv = GetSourceDocument(cx, getter_AddRefs(doc));
if (doc) {
*sourceURL = doc->GetBaseURI().get();
} else {
*sourceURL = nsnull;
}
return rv;
}
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