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gecko-dev/layout/forms/nsIsIndexFrame.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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):
*
* 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 "nsIsIndexFrame.h"
#include "nsIContent.h"
#include "prtypes.h"
#include "nsIAtom.h"
#include "nsPresContext.h"
#include "nsGkAtoms.h"
#include "nsPresState.h"
#include "nsWidgetsCID.h"
#include "nsIComponentManager.h"
#include "nsHTMLParts.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsINameSpaceManager.h"
#include "nsCOMPtr.h"
#include "nsIDOMElement.h"
#include "nsIDOMDocument.h"
#include "nsIDocument.h"
#include "nsIPresShell.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsIStatefulFrame.h"
#include "nsXPCOM.h"
#include "nsISupportsPrimitives.h"
#include "nsIComponentManager.h"
#include "nsHTMLParts.h"
#include "nsLinebreakConverter.h"
#include "nsILinkHandler.h"
#include "nsIHTMLDocument.h"
#include "nsXPIDLString.h"
#include "nsReadableUtils.h"
#include "nsNetUtil.h"
#include "nsICharsetConverterManager.h"
#include "nsEscape.h"
#include "nsIDOMKeyListener.h"
#include "nsIDOMKeyEvent.h"
#include "nsIFormControlFrame.h"
#include "nsINodeInfo.h"
#include "nsIDOMEventTarget.h"
#include "nsContentCID.h"
#include "nsNodeInfoManager.h"
#include "nsContentCreatorFunctions.h"
#include "nsContentUtils.h"
nsIFrame*
NS_NewIsIndexFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsIsIndexFrame(aContext);
}
nsIsIndexFrame::nsIsIndexFrame(nsStyleContext* aContext) :
nsAreaFrame(aContext)
{
SetFlags(NS_BLOCK_SPACE_MGR);
}
nsIsIndexFrame::~nsIsIndexFrame()
{
}
void
nsIsIndexFrame::Destroy()
{
// remove ourself as a listener of the text control (bug 40533)
if (mInputContent) {
mInputContent->RemoveEventListenerByIID(this, NS_GET_IID(nsIDOMKeyListener));
nsContentUtils::DestroyAnonymousContent(&mInputContent);
}
nsContentUtils::DestroyAnonymousContent(&mTextContent);
nsContentUtils::DestroyAnonymousContent(&mPreHr);
nsContentUtils::DestroyAnonymousContent(&mPostHr);
nsAreaFrame::Destroy();
}
// REVIEW: We don't need to override BuildDisplayList, nsAreaFrame will honour
// our visibility setting
NS_IMETHODIMP
nsIsIndexFrame::UpdatePromptLabel()
{
if (!mTextContent) return NS_ERROR_UNEXPECTED;
nsresult result = NS_OK;
// Get the text from the "prompt" attribute.
// If it is zero length, set it to a default value (localized)
nsXPIDLString prompt;
if (mContent)
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::prompt, prompt);
if (prompt.IsEmpty()) {
// Generate localized label.
// We can't make any assumption as to what the default would be
// because the value is localized for non-english platforms, thus
// it might not be the string "This is a searchable index. Enter search keywords: "
result =
nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
"IsIndexPrompt", prompt);
}
mTextContent->SetText(prompt, PR_TRUE);
return NS_OK;
}
nsresult
nsIsIndexFrame::GetInputFrame(nsIFormControlFrame** oFrame)
{
nsIPresShell *presShell = PresContext()->GetPresShell();
if (!mInputContent) NS_WARNING("null content - cannot restore state");
if (presShell && mInputContent) {
nsIFrame *frame = presShell->GetPrimaryFrameFor(mInputContent);
if (frame) {
return CallQueryInterface(frame, oFrame);
}
}
return NS_OK;
}
void
nsIsIndexFrame::GetInputValue(nsString& oString)
{
nsIFormControlFrame* frame = nsnull;
GetInputFrame(&frame);
if (frame) {
((nsNewFrame*)frame)->GetValue(oString, PR_FALSE);
}
}
void
nsIsIndexFrame::SetInputValue(const nsString& aString)
{
nsIFormControlFrame* frame = nsnull;
GetInputFrame(&frame);
if (frame) {
((nsNewFrame*)frame)->SetValue(aString);
}
}
void
nsIsIndexFrame::SetFocus(PRBool aOn, PRBool aRepaint)
{
nsIFormControlFrame* frame = nsnull;
GetInputFrame(&frame);
if (frame) {
frame->SetFocus(aOn, aRepaint);
}
}
nsresult
nsIsIndexFrame::CreateAnonymousContent(nsTArray<nsIContent*>& aElements)
{
// Get the node info manager (used to create hr's and input's)
nsCOMPtr<nsIDocument> doc = mContent->GetDocument();
nsNodeInfoManager *nimgr = doc->NodeInfoManager();
// Create an hr
nsCOMPtr<nsINodeInfo> hrInfo;
nimgr->GetNodeInfo(nsGkAtoms::hr, nsnull, kNameSpaceID_None,
getter_AddRefs(hrInfo));
NS_NewHTMLElement(getter_AddRefs(mPreHr), hrInfo);
if (!mPreHr || !aElements.AppendElement(mPreHr))
return NS_ERROR_OUT_OF_MEMORY;
// Add a child text content node for the label
NS_NewTextNode(getter_AddRefs(mTextContent), nimgr);
if (!mTextContent)
return NS_ERROR_OUT_OF_MEMORY;
// set the value of the text node and add it to the child list
UpdatePromptLabel();
if (!aElements.AppendElement(mTextContent))
return NS_ERROR_OUT_OF_MEMORY;
// Create text input field
nsCOMPtr<nsINodeInfo> inputInfo;
nimgr->GetNodeInfo(nsGkAtoms::input, nsnull, kNameSpaceID_None,
getter_AddRefs(inputInfo));
NS_NewHTMLElement(getter_AddRefs(mInputContent), inputInfo);
if (!mInputContent)
return NS_ERROR_OUT_OF_MEMORY;
mInputContent->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
NS_LITERAL_STRING("text"), PR_FALSE);
if (!aElements.AppendElement(mInputContent))
return NS_ERROR_OUT_OF_MEMORY;
// Register as an event listener to submit on Enter press
mInputContent->AddEventListenerByIID(this, NS_GET_IID(nsIDOMKeyListener));
// Create an hr
NS_NewHTMLElement(getter_AddRefs(mPostHr), hrInfo);
if (!mPostHr || !aElements.AppendElement(mPostHr))
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
// Frames are not refcounted, no need to AddRef
NS_IMETHODIMP
nsIsIndexFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
NS_PRECONDITION(aInstancePtr, "null out param");
if (aIID.Equals(NS_GET_IID(nsIAnonymousContentCreator))) {
*aInstancePtr = NS_STATIC_CAST(nsIAnonymousContentCreator*, this);
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIStatefulFrame))) {
*aInstancePtr = NS_STATIC_CAST(nsIStatefulFrame*, this);
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIDOMKeyListener))) {
*aInstancePtr = NS_STATIC_CAST(nsIDOMKeyListener*, this);
return NS_OK;
}
return nsAreaFrame::QueryInterface(aIID, aInstancePtr);
}
nscoord
nsIsIndexFrame::GetMinWidth(nsIRenderingContext *aRenderingContext)
{
nscoord result;
DISPLAY_MIN_WIDTH(this, result);
// Our min width is our pref width; the rest of our reflow is
// happily handled by nsAreaFrame
result = GetPrefWidth(aRenderingContext);
return result;
}
PRBool
nsIsIndexFrame::IsLeaf() const
{
return PR_TRUE;
}
NS_IMETHODIMP
nsIsIndexFrame::AttributeChanged(PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType)
{
nsresult rv = NS_OK;
if (nsGkAtoms::prompt == aAttribute) {
rv = UpdatePromptLabel();
} else {
rv = nsAreaFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
}
return rv;
}
nsresult
nsIsIndexFrame::KeyPress(nsIDOMEvent* aEvent)
{
nsCOMPtr<nsIDOMKeyEvent> keyEvent = do_QueryInterface(aEvent);
if (keyEvent) {
PRUint32 code;
keyEvent->GetKeyCode(&code);
if (code == 0) {
keyEvent->GetCharCode(&code);
}
if (nsIDOMKeyEvent::DOM_VK_RETURN == code) {
OnSubmit(PresContext());
aEvent->PreventDefault(); // XXX Needed?
}
}
return NS_OK;
}
#ifdef NS_DEBUG
NS_IMETHODIMP
nsIsIndexFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("IsIndex"), aResult);
}
#endif
// submission
// much of this is cut and paste from nsFormFrame::OnSubmit
NS_IMETHODIMP
nsIsIndexFrame::OnSubmit(nsPresContext* aPresContext)
{
if (!mContent || !mInputContent) {
return NS_ERROR_UNEXPECTED;
}
nsresult result = NS_OK;
// Begin ProcessAsURLEncoded
nsAutoString data;
nsCOMPtr<nsIUnicodeEncoder> encoder;
if(NS_FAILED(GetEncoder(getter_AddRefs(encoder)))) // Non-fatal error
encoder = nsnull;
nsAutoString value;
GetInputValue(value);
URLEncode(value, encoder, data);
// End ProcessAsURLEncoded
// make the url string
nsILinkHandler *handler = aPresContext->GetLinkHandler();
nsAutoString href;
// Get the document.
// We'll need it now to form the URL we're submitting to.
// We'll also need it later to get the DOM window when notifying form submit observers (bug 33203)
nsCOMPtr<nsIDocument> document = mContent->GetDocument();
if (!document) return NS_OK; // No doc means don't submit, see Bug 28988
// Resolve url to an absolute url
nsIURI *baseURI = document->GetBaseURI();
if (!baseURI) {
NS_ERROR("No Base URL found in Form Submit!\n");
return NS_OK; // No base URL -> exit early, see Bug 30721
}
// If an action is not specified and we are inside
// a HTML document then reload the URL. This makes us
// compatible with 4.x browsers.
// If we are in some other type of document such as XML or
// XUL, do nothing. This prevents undesirable reloading of
// a document inside XUL.
nsresult rv;
nsCOMPtr<nsIHTMLDocument> htmlDoc;
htmlDoc = do_QueryInterface(document, &rv);
if (NS_FAILED(rv)) {
// Must be a XML, XUL or other non-HTML document type
// so do nothing.
return NS_OK;
}
// Necko's MakeAbsoluteURI doesn't reuse the baseURL's rel path if it is
// passed a zero length rel path.
nsCAutoString relPath;
baseURI->GetSpec(relPath);
if (!relPath.IsEmpty()) {
CopyUTF8toUTF16(relPath, href);
// If re-using the same URL, chop off old query string (bug 25330)
PRInt32 queryStart = href.FindChar('?');
if (kNotFound != queryStart) {
href.Truncate(queryStart);
}
} else {
NS_ERROR("Rel path couldn't be formed in form submit!\n");
return NS_ERROR_OUT_OF_MEMORY;
}
// Add the URI encoded form values to the URI
// Get the scheme of the URI.
nsCOMPtr<nsIURI> actionURL;
nsXPIDLCString scheme;
PRBool isJSURL = PR_FALSE;
const nsACString &docCharset = document->GetDocumentCharacterSet();
const nsPromiseFlatCString& flatDocCharset = PromiseFlatCString(docCharset);
if (NS_SUCCEEDED(result = NS_NewURI(getter_AddRefs(actionURL), href,
flatDocCharset.get(),
baseURI))) {
result = actionURL->SchemeIs("javascript", &isJSURL);
}
// Append the URI encoded variable/value pairs for GET's
if (!isJSURL) { // Not for JS URIs, see bug 26917
if (href.FindChar('?') == kNotFound) { // Add a ? if needed
href.Append(PRUnichar('?'));
} else { // Adding to existing query string
if (href.Last() != '&' && href.Last() != '?') { // Add a & if needed
href.Append(PRUnichar('&'));
}
}
href.Append(data);
}
nsCOMPtr<nsIURI> uri;
result = NS_NewURI(getter_AddRefs(uri), href,
flatDocCharset.get(), baseURI);
if (NS_FAILED(result)) return result;
// Now pass on absolute url to the click handler
if (handler) {
handler->OnLinkClick(mContent, uri, nsnull);
}
return result;
}
void nsIsIndexFrame::GetSubmitCharset(nsCString& oCharset)
{
oCharset.AssignLiteral("UTF-8"); // default to utf-8
// XXX
// We may want to get it from the HTML 4 Accept-Charset attribute first
// see 17.3 The FORM element in HTML 4 for details
// Get the charset from document
nsIDocument* doc = mContent->GetDocument();
if (doc) {
oCharset = doc->GetDocumentCharacterSet();
}
}
NS_IMETHODIMP nsIsIndexFrame::GetEncoder(nsIUnicodeEncoder** encoder)
{
*encoder = nsnull;
nsCAutoString charset;
nsresult rv = NS_OK;
GetSubmitCharset(charset);
// Get Charset, get the encoder.
nsICharsetConverterManager * ccm = nsnull;
rv = CallGetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &ccm);
if(NS_SUCCEEDED(rv) && (nsnull != ccm)) {
rv = ccm->GetUnicodeEncoderRaw(charset.get(), encoder);
NS_RELEASE(ccm);
if (!*encoder) {
rv = NS_ERROR_FAILURE;
}
if (NS_SUCCEEDED(rv)) {
rv = (*encoder)->SetOutputErrorBehavior(nsIUnicodeEncoder::kOnError_Replace, nsnull, (PRUnichar)'?');
}
}
return rv;
}
// XXX i18n helper routines
char*
nsIsIndexFrame::UnicodeToNewBytes(const PRUnichar* aSrc, PRUint32 aLen, nsIUnicodeEncoder* encoder)
{
char* res = nsnull;
if(NS_SUCCEEDED(encoder->Reset()))
{
PRInt32 maxByteLen = 0;
if(NS_SUCCEEDED(encoder->GetMaxLength(aSrc, (PRInt32) aLen, &maxByteLen)))
{
res = new char[maxByteLen+1];
if(nsnull != res)
{
PRInt32 reslen = maxByteLen;
PRInt32 reslen2 ;
PRInt32 srclen = aLen;
encoder->Convert(aSrc, &srclen, res, &reslen);
reslen2 = maxByteLen-reslen;
encoder->Finish(res+reslen, &reslen2);
res[reslen+reslen2] = '\0';
}
}
}
return res;
}
// XXX i18n helper routines
void
nsIsIndexFrame::URLEncode(const nsString& aString, nsIUnicodeEncoder* encoder, nsString& oString)
{
char* inBuf = nsnull;
if(encoder)
inBuf = UnicodeToNewBytes(aString.get(), aString.Length(), encoder);
if(nsnull == inBuf)
inBuf = ToNewCString(aString);
// convert to CRLF breaks
char* convertedBuf = nsLinebreakConverter::ConvertLineBreaks(inBuf,
nsLinebreakConverter::eLinebreakAny, nsLinebreakConverter::eLinebreakNet);
delete [] inBuf;
char* outBuf = nsEscape(convertedBuf, url_XPAlphas);
oString.AssignASCII(outBuf);
nsMemory::Free(outBuf);
nsMemory::Free(convertedBuf);
}
//----------------------------------------------------------------------
// nsIStatefulFrame
//----------------------------------------------------------------------
NS_IMETHODIMP
nsIsIndexFrame::SaveState(SpecialStateID aStateID, nsPresState** aState)
{
NS_ENSURE_ARG_POINTER(aState);
// Get the value string
nsAutoString stateString;
GetInputValue(stateString);
nsresult res = NS_OK;
if (! stateString.IsEmpty()) {
// Construct a pres state and store value in it.
res = NS_NewPresState(aState);
NS_ENSURE_SUCCESS(res, res);
res = (*aState)->SetStateProperty(NS_LITERAL_STRING("value"), stateString);
}
return res;
}
NS_IMETHODIMP
nsIsIndexFrame::RestoreState(nsPresState* aState)
{
NS_ENSURE_ARG_POINTER(aState);
// Set the value to the stored state.
nsAutoString stateString;
nsresult res = aState->GetStateProperty(NS_LITERAL_STRING("value"), stateString);
NS_ENSURE_SUCCESS(res, res);
SetInputValue(stateString);
return NS_OK;
}
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