зеркало из https://github.com/mozilla/gecko-dev.git
567 строки
16 KiB
C++
567 строки
16 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsIsIndexFrame.h"
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#include "nsIContent.h"
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#include "prtypes.h"
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#include "nsIAtom.h"
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#include "nsPresContext.h"
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#include "nsGkAtoms.h"
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#include "nsPresState.h"
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#include "nsWidgetsCID.h"
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#include "nsIComponentManager.h"
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#include "nsHTMLParts.h"
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#include "nsIDOMHTMLInputElement.h"
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#include "nsINameSpaceManager.h"
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#include "nsCOMPtr.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMDocument.h"
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#include "nsIDocument.h"
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#include "nsIPresShell.h"
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#include "nsIDOMHTMLInputElement.h"
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#include "nsIStatefulFrame.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIComponentManager.h"
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#include "nsHTMLParts.h"
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#include "nsLinebreakConverter.h"
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#include "nsILinkHandler.h"
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#include "nsIHTMLDocument.h"
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#include "nsXPIDLString.h"
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#include "nsReadableUtils.h"
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#include "nsNetUtil.h"
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#include "nsICharsetConverterManager.h"
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#include "nsEscape.h"
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#include "nsIDOMKeyListener.h"
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#include "nsIDOMKeyEvent.h"
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#include "nsIFormControlFrame.h"
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#include "nsINodeInfo.h"
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#include "nsIDOMEventTarget.h"
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#include "nsContentCID.h"
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#include "nsNodeInfoManager.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsContentUtils.h"
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#include "nsLayoutErrors.h"
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nsIFrame*
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NS_NewIsIndexFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsIsIndexFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsIsIndexFrame)
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nsIsIndexFrame::nsIsIndexFrame(nsStyleContext* aContext) :
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nsBlockFrame(aContext)
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{
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SetFlags(NS_BLOCK_FLOAT_MGR);
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}
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nsIsIndexFrame::~nsIsIndexFrame()
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{
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}
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void
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nsIsIndexFrame::DestroyFrom(nsIFrame* aDestructRoot)
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{
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// remove ourself as a listener of the text control (bug 40533)
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if (mInputContent) {
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if (mListener) {
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mInputContent->RemoveEventListenerByIID(mListener, NS_GET_IID(nsIDOMKeyListener));
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}
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nsContentUtils::DestroyAnonymousContent(&mInputContent);
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}
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nsContentUtils::DestroyAnonymousContent(&mTextContent);
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nsContentUtils::DestroyAnonymousContent(&mPreHr);
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nsContentUtils::DestroyAnonymousContent(&mPostHr);
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nsBlockFrame::DestroyFrom(aDestructRoot);
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}
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// REVIEW: We don't need to override BuildDisplayList, nsBlockFrame will honour
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// our visibility setting
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nsresult
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nsIsIndexFrame::UpdatePromptLabel(PRBool aNotify)
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{
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if (!mTextContent) return NS_ERROR_UNEXPECTED;
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nsresult result = NS_OK;
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// Get the text from the "prompt" attribute.
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// If it is zero length, set it to a default value (localized)
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nsXPIDLString prompt;
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if (mContent)
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mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::prompt, prompt);
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if (prompt.IsEmpty()) {
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// Generate localized label.
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// We can't make any assumption as to what the default would be
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// because the value is localized for non-english platforms, thus
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// it might not be the string "This is a searchable index. Enter search keywords: "
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result =
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nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
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"IsIndexPromptWithSpace", prompt);
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}
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mTextContent->SetText(prompt, aNotify);
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return NS_OK;
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}
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nsresult
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nsIsIndexFrame::GetInputFrame(nsIFormControlFrame** oFrame)
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{
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if (!mInputContent) NS_WARNING("null content - cannot restore state");
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if (mInputContent) {
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nsIFrame *frame = mInputContent->GetPrimaryFrame();
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if (frame) {
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*oFrame = do_QueryFrame(frame);
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return *oFrame ? NS_OK : NS_NOINTERFACE;
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}
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}
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return NS_OK;
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}
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void
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nsIsIndexFrame::GetInputValue(nsString& oString)
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{
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nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(mInputContent);
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if (txtCtrl) {
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txtCtrl->GetTextEditorValue(oString, PR_FALSE);
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}
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}
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void
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nsIsIndexFrame::SetInputValue(const nsString& aString)
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{
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nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(mInputContent);
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if (txtCtrl) {
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txtCtrl->SetTextEditorValue(aString, PR_FALSE);
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}
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}
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void
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nsIsIndexFrame::SetFocus(PRBool aOn, PRBool aRepaint)
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{
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nsIFormControlFrame* frame = nsnull;
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GetInputFrame(&frame);
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if (frame) {
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frame->SetFocus(aOn, aRepaint);
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}
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}
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nsresult
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nsIsIndexFrame::CreateAnonymousContent(nsTArray<nsIContent*>& aElements)
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{
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// Get the node info manager (used to create hr's and input's)
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nsCOMPtr<nsIDocument> doc = mContent->GetDocument();
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nsNodeInfoManager *nimgr = doc->NodeInfoManager();
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// Create an hr
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nsCOMPtr<nsINodeInfo> hrInfo;
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hrInfo = nimgr->GetNodeInfo(nsGkAtoms::hr, nsnull, kNameSpaceID_XHTML);
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NS_NewHTMLElement(getter_AddRefs(mPreHr), hrInfo, PR_FALSE);
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if (!mPreHr || !aElements.AppendElement(mPreHr))
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return NS_ERROR_OUT_OF_MEMORY;
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// Add a child text content node for the label
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NS_NewTextNode(getter_AddRefs(mTextContent), nimgr);
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if (!mTextContent)
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return NS_ERROR_OUT_OF_MEMORY;
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// set the value of the text node and add it to the child list
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UpdatePromptLabel(PR_FALSE);
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if (!aElements.AppendElement(mTextContent))
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return NS_ERROR_OUT_OF_MEMORY;
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// Create text input field
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nsCOMPtr<nsINodeInfo> inputInfo;
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inputInfo = nimgr->GetNodeInfo(nsGkAtoms::input, nsnull, kNameSpaceID_XHTML);
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NS_NewHTMLElement(getter_AddRefs(mInputContent), inputInfo, PR_FALSE);
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if (!mInputContent)
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return NS_ERROR_OUT_OF_MEMORY;
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mInputContent->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
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NS_LITERAL_STRING("text"), PR_FALSE);
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if (!aElements.AppendElement(mInputContent))
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return NS_ERROR_OUT_OF_MEMORY;
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// Register as an event listener to submit on Enter press
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mListener = new nsIsIndexFrame::KeyListener(this);
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mInputContent->AddEventListenerByIID(mListener, NS_GET_IID(nsIDOMKeyListener));
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// Create an hr
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NS_NewHTMLElement(getter_AddRefs(mPostHr), hrInfo, PR_FALSE);
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if (!mPostHr || !aElements.AppendElement(mPostHr))
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return NS_ERROR_OUT_OF_MEMORY;
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return NS_OK;
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}
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void
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nsIsIndexFrame::AppendAnonymousContentTo(nsBaseContentList& aElements)
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{
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aElements.MaybeAppendElement(mTextContent);
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aElements.MaybeAppendElement(mInputContent);
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}
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NS_QUERYFRAME_HEAD(nsIsIndexFrame)
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NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
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NS_QUERYFRAME_ENTRY(nsIStatefulFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
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NS_IMPL_ISUPPORTS2(nsIsIndexFrame::KeyListener,
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nsIDOMKeyListener,
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nsIDOMEventListener)
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nscoord
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nsIsIndexFrame::GetMinWidth(nsIRenderingContext *aRenderingContext)
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{
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nscoord result;
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DISPLAY_MIN_WIDTH(this, result);
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// Our min width is our pref width; the rest of our reflow is
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// happily handled by nsBlockFrame
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result = GetPrefWidth(aRenderingContext);
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return result;
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}
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PRBool
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nsIsIndexFrame::IsLeaf() const
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{
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return PR_TRUE;
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}
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NS_IMETHODIMP
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nsIsIndexFrame::AttributeChanged(PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType)
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{
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nsresult rv = NS_OK;
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if (nsGkAtoms::prompt == aAttribute) {
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rv = UpdatePromptLabel(PR_TRUE);
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} else {
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rv = nsBlockFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
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}
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return rv;
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}
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nsresult
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nsIsIndexFrame::KeyListener::KeyPress(nsIDOMEvent* aEvent)
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{
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mOwner->KeyPress(aEvent);
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return NS_OK;
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}
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void
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nsIsIndexFrame::KeyPress(nsIDOMEvent* aEvent)
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{
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nsCOMPtr<nsIDOMKeyEvent> keyEvent = do_QueryInterface(aEvent);
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if (keyEvent) {
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PRUint32 code;
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keyEvent->GetKeyCode(&code);
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if (code == 0) {
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keyEvent->GetCharCode(&code);
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}
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if (nsIDOMKeyEvent::DOM_VK_RETURN == code) {
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OnSubmit(PresContext());
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aEvent->PreventDefault(); // XXX Needed?
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}
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}
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}
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#ifdef NS_DEBUG
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NS_IMETHODIMP
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nsIsIndexFrame::GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("IsIndex"), aResult);
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}
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#endif
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// submission
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// much of this is cut and paste from nsFormFrame::OnSubmit
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NS_IMETHODIMP
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nsIsIndexFrame::OnSubmit(nsPresContext* aPresContext)
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{
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if (!mContent || !mInputContent) {
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return NS_ERROR_UNEXPECTED;
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}
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if (mContent->IsEditable()) {
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return NS_OK;
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}
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nsresult result = NS_OK;
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// Begin ProcessAsURLEncoded
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nsAutoString data;
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nsCOMPtr<nsIUnicodeEncoder> encoder;
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if(NS_FAILED(GetEncoder(getter_AddRefs(encoder)))) // Non-fatal error
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encoder = nsnull;
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nsAutoString value;
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GetInputValue(value);
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URLEncode(value, encoder, data);
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// End ProcessAsURLEncoded
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// make the url string
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nsILinkHandler *handler = aPresContext->GetLinkHandler();
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nsAutoString href;
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// Get the document.
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// We'll need it now to form the URL we're submitting to.
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// We'll also need it later to get the DOM window when notifying form submit observers (bug 33203)
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nsCOMPtr<nsIDocument> document = mContent->GetDocument();
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if (!document) return NS_OK; // No doc means don't submit, see Bug 28988
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// Resolve url to an absolute url
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nsIURI *baseURI = document->GetDocBaseURI();
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if (!baseURI) {
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NS_ERROR("No Base URL found in Form Submit!");
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return NS_OK; // No base URL -> exit early, see Bug 30721
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}
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// If an action is not specified and we are inside
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// a HTML document then reload the URL. This makes us
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// compatible with 4.x browsers.
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// If we are in some other type of document such as XML or
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// XUL, do nothing. This prevents undesirable reloading of
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// a document inside XUL.
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nsresult rv;
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nsCOMPtr<nsIHTMLDocument> htmlDoc;
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htmlDoc = do_QueryInterface(document, &rv);
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if (NS_FAILED(rv)) {
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// Must be a XML, XUL or other non-HTML document type
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// so do nothing.
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return NS_OK;
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}
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// Necko's MakeAbsoluteURI doesn't reuse the baseURL's rel path if it is
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// passed a zero length rel path.
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nsCAutoString relPath;
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baseURI->GetSpec(relPath);
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if (!relPath.IsEmpty()) {
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CopyUTF8toUTF16(relPath, href);
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// If re-using the same URL, chop off old query string (bug 25330)
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PRInt32 queryStart = href.FindChar('?');
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if (kNotFound != queryStart) {
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href.Truncate(queryStart);
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}
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} else {
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NS_ERROR("Rel path couldn't be formed in form submit!");
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return NS_ERROR_OUT_OF_MEMORY;
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}
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// Add the URI encoded form values to the URI
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// Get the scheme of the URI.
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nsCOMPtr<nsIURI> actionURL;
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nsXPIDLCString scheme;
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PRBool isJSURL = PR_FALSE;
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const nsACString &docCharset = document->GetDocumentCharacterSet();
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const nsPromiseFlatCString& flatDocCharset = PromiseFlatCString(docCharset);
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if (NS_SUCCEEDED(result = NS_NewURI(getter_AddRefs(actionURL), href,
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flatDocCharset.get(),
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baseURI))) {
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result = actionURL->SchemeIs("javascript", &isJSURL);
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}
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// Append the URI encoded variable/value pairs for GET's
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if (!isJSURL) { // Not for JS URIs, see bug 26917
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if (href.FindChar('?') == kNotFound) { // Add a ? if needed
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href.Append(PRUnichar('?'));
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} else { // Adding to existing query string
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if (href.Last() != '&' && href.Last() != '?') { // Add a & if needed
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href.Append(PRUnichar('&'));
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}
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}
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href.Append(data);
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}
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nsCOMPtr<nsIURI> uri;
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result = NS_NewURI(getter_AddRefs(uri), href,
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flatDocCharset.get(), baseURI);
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if (NS_FAILED(result)) return result;
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// Now pass on absolute url to the click handler
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if (handler) {
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handler->OnLinkClick(mContent, uri, nsnull);
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}
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return result;
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}
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void nsIsIndexFrame::GetSubmitCharset(nsCString& oCharset)
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{
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oCharset.AssignLiteral("UTF-8"); // default to utf-8
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// XXX
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// We may want to get it from the HTML 4 Accept-Charset attribute first
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// see 17.3 The FORM element in HTML 4 for details
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// Get the charset from document
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nsIDocument* doc = mContent->GetDocument();
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if (doc) {
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oCharset = doc->GetDocumentCharacterSet();
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}
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}
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NS_IMETHODIMP nsIsIndexFrame::GetEncoder(nsIUnicodeEncoder** encoder)
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{
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*encoder = nsnull;
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nsCAutoString charset;
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nsresult rv = NS_OK;
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GetSubmitCharset(charset);
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// Get Charset, get the encoder.
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nsICharsetConverterManager * ccm = nsnull;
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rv = CallGetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &ccm);
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if(NS_SUCCEEDED(rv) && (nsnull != ccm)) {
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rv = ccm->GetUnicodeEncoderRaw(charset.get(), encoder);
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NS_RELEASE(ccm);
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if (!*encoder) {
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rv = NS_ERROR_FAILURE;
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}
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if (NS_SUCCEEDED(rv)) {
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rv = (*encoder)->SetOutputErrorBehavior(nsIUnicodeEncoder::kOnError_Replace, nsnull, (PRUnichar)'?');
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}
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}
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return rv;
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}
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// XXX i18n helper routines
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char*
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nsIsIndexFrame::UnicodeToNewBytes(const PRUnichar* aSrc, PRUint32 aLen, nsIUnicodeEncoder* encoder)
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{
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char* res = nsnull;
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if(NS_SUCCEEDED(encoder->Reset()))
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{
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PRInt32 maxByteLen = 0;
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if(NS_SUCCEEDED(encoder->GetMaxLength(aSrc, (PRInt32) aLen, &maxByteLen)))
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{
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res = new char[maxByteLen+1];
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if(nsnull != res)
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{
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PRInt32 reslen = maxByteLen;
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PRInt32 reslen2 ;
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PRInt32 srclen = aLen;
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encoder->Convert(aSrc, &srclen, res, &reslen);
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reslen2 = maxByteLen-reslen;
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encoder->Finish(res+reslen, &reslen2);
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res[reslen+reslen2] = '\0';
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}
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}
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}
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return res;
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}
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// XXX i18n helper routines
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void
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nsIsIndexFrame::URLEncode(const nsString& aString, nsIUnicodeEncoder* encoder, nsString& oString)
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{
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char* inBuf = nsnull;
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if(encoder)
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inBuf = UnicodeToNewBytes(aString.get(), aString.Length(), encoder);
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|
|
|
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.
|
|
*aState = new nsPresState();
|
|
if (!*aState)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
nsCOMPtr<nsISupportsString> state
|
|
(do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID));
|
|
|
|
if (!state)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
state->SetData(stateString);
|
|
(*aState)->SetStateProperty(state);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsIsIndexFrame::RestoreState(nsPresState* aState)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aState);
|
|
|
|
// Set the value to the stored state.
|
|
nsCOMPtr<nsISupportsString> stateString
|
|
(do_QueryInterface(aState->GetStateProperty()));
|
|
|
|
nsAutoString data;
|
|
stateString->GetData(data);
|
|
SetInputValue(data);
|
|
|
|
return NS_OK;
|
|
}
|