gecko-dev/widget/nsHTMLFormatConverter.cpp
Mason Chang 8180f9229c Bug 1085696. Part 1 Move widget/xpwidget to /widget. r=roc
--HG--
rename : widget/xpwidgets/ContentHelper.cpp => widget/ContentHelper.cpp
rename : widget/xpwidgets/ContentHelper.h => widget/ContentHelper.h
rename : widget/xpwidgets/GfxDriverInfo.cpp => widget/GfxDriverInfo.cpp
rename : widget/xpwidgets/GfxDriverInfo.h => widget/GfxDriverInfo.h
rename : widget/xpwidgets/GfxInfoBase.cpp => widget/GfxInfoBase.cpp
rename : widget/xpwidgets/GfxInfoBase.h => widget/GfxInfoBase.h
rename : widget/xpwidgets/GfxInfoCollector.cpp => widget/GfxInfoCollector.cpp
rename : widget/xpwidgets/GfxInfoCollector.h => widget/GfxInfoCollector.h
rename : widget/xpwidgets/GfxInfoWebGL.cpp => widget/GfxInfoWebGL.cpp
rename : widget/xpwidgets/GfxInfoWebGL.h => widget/GfxInfoWebGL.h
rename : widget/xpwidgets/GfxInfoX11.cpp => widget/GfxInfoX11.cpp
rename : widget/xpwidgets/GfxInfoX11.h => widget/GfxInfoX11.h
rename : widget/xpwidgets/InputData.cpp => widget/InputData.cpp
rename : widget/xpwidgets/PuppetWidget.cpp => widget/PuppetWidget.cpp
rename : widget/xpwidgets/PuppetWidget.h => widget/PuppetWidget.h
rename : widget/xpwidgets/ScreenProxy.cpp => widget/ScreenProxy.cpp
rename : widget/xpwidgets/ScreenProxy.h => widget/ScreenProxy.h
rename : widget/shared/SharedWidgetUtils.cpp => widget/SharedWidgetUtils.cpp
rename : widget/xpwidgets/WidgetUtils.cpp => widget/WidgetUtils.cpp
rename : widget/xpwidgets/nsAppShellSingleton.h => widget/nsAppShellSingleton.h
rename : widget/xpwidgets/nsBaseAppShell.cpp => widget/nsBaseAppShell.cpp
rename : widget/xpwidgets/nsBaseAppShell.h => widget/nsBaseAppShell.h
rename : widget/xpwidgets/nsBaseClipboard.cpp => widget/nsBaseClipboard.cpp
rename : widget/xpwidgets/nsBaseClipboard.h => widget/nsBaseClipboard.h
rename : widget/xpwidgets/nsBaseDragService.cpp => widget/nsBaseDragService.cpp
rename : widget/xpwidgets/nsBaseDragService.h => widget/nsBaseDragService.h
rename : widget/xpwidgets/nsBaseFilePicker.cpp => widget/nsBaseFilePicker.cpp
rename : widget/xpwidgets/nsBaseFilePicker.h => widget/nsBaseFilePicker.h
rename : widget/xpwidgets/nsBaseScreen.cpp => widget/nsBaseScreen.cpp
rename : widget/xpwidgets/nsBaseScreen.h => widget/nsBaseScreen.h
rename : widget/xpwidgets/nsBaseWidget.cpp => widget/nsBaseWidget.cpp
rename : widget/xpwidgets/nsBaseWidget.h => widget/nsBaseWidget.h
rename : widget/xpwidgets/nsClipboardHelper.cpp => widget/nsClipboardHelper.cpp
rename : widget/xpwidgets/nsClipboardHelper.h => widget/nsClipboardHelper.h
rename : widget/xpwidgets/nsClipboardProxy.cpp => widget/nsClipboardProxy.cpp
rename : widget/xpwidgets/nsClipboardProxy.h => widget/nsClipboardProxy.h
rename : widget/xpwidgets/nsColorPickerProxy.cpp => widget/nsColorPickerProxy.cpp
rename : widget/xpwidgets/nsColorPickerProxy.h => widget/nsColorPickerProxy.h
rename : widget/xpwidgets/nsContentProcessWidgetFactory.cpp => widget/nsContentProcessWidgetFactory.cpp
rename : widget/xpwidgets/nsFilePickerProxy.cpp => widget/nsFilePickerProxy.cpp
rename : widget/xpwidgets/nsFilePickerProxy.h => widget/nsFilePickerProxy.h
rename : widget/xpwidgets/nsHTMLFormatConverter.cpp => widget/nsHTMLFormatConverter.cpp
rename : widget/xpwidgets/nsHTMLFormatConverter.h => widget/nsHTMLFormatConverter.h
rename : widget/xpwidgets/nsIWidgetListener.cpp => widget/nsIWidgetListener.cpp
rename : widget/xpwidgets/nsIdleService.cpp => widget/nsIdleService.cpp
rename : widget/xpwidgets/nsIdleService.h => widget/nsIdleService.h
rename : widget/xpwidgets/nsNativeTheme.cpp => widget/nsNativeTheme.cpp
rename : widget/xpwidgets/nsNativeTheme.h => widget/nsNativeTheme.h
rename : widget/xpwidgets/nsPrimitiveHelpers.cpp => widget/nsPrimitiveHelpers.cpp
rename : widget/xpwidgets/nsPrimitiveHelpers.h => widget/nsPrimitiveHelpers.h
rename : widget/xpwidgets/nsPrintOptionsImpl.cpp => widget/nsPrintOptionsImpl.cpp
rename : widget/xpwidgets/nsPrintOptionsImpl.h => widget/nsPrintOptionsImpl.h
rename : widget/xpwidgets/nsPrintSession.cpp => widget/nsPrintSession.cpp
rename : widget/xpwidgets/nsPrintSession.h => widget/nsPrintSession.h
rename : widget/xpwidgets/nsPrintSettingsImpl.cpp => widget/nsPrintSettingsImpl.cpp
rename : widget/xpwidgets/nsPrintSettingsImpl.h => widget/nsPrintSettingsImpl.h
rename : widget/xpwidgets/nsScreenManagerProxy.cpp => widget/nsScreenManagerProxy.cpp
rename : widget/xpwidgets/nsScreenManagerProxy.h => widget/nsScreenManagerProxy.h
rename : widget/xpwidgets/nsTransferable.cpp => widget/nsTransferable.cpp
rename : widget/xpwidgets/nsTransferable.h => widget/nsTransferable.h
rename : widget/xpwidgets/nsXPLookAndFeel.cpp => widget/nsXPLookAndFeel.cpp
rename : widget/xpwidgets/nsXPLookAndFeel.h => widget/nsXPLookAndFeel.h
2014-10-23 10:16:45 -07:00

256 lines
7.5 KiB
C++
Raw Blame History

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsHTMLFormatConverter.h"
#include "nsCRT.h"
#include "nsISupportsArray.h"
#include "nsIComponentManager.h"
#include "nsCOMPtr.h"
#include "nsXPCOM.h"
#include "nsISupportsPrimitives.h"
#include "nsITransferable.h" // for mime defs, this is BAD
// HTML convertor stuff
#include "nsPrimitiveHelpers.h"
#include "nsIDocumentEncoder.h"
#include "nsContentUtils.h"
nsHTMLFormatConverter::nsHTMLFormatConverter()
{
}
nsHTMLFormatConverter::~nsHTMLFormatConverter()
{
}
NS_IMPL_ISUPPORTS(nsHTMLFormatConverter, nsIFormatConverter)
//
// GetInputDataFlavors
//
// Creates a new list and returns the list of all the flavors this converter
// knows how to import. In this case, it's just HTML.
//
// Flavors (strings) are wrapped in a primitive object so that JavaScript can
// access them easily via XPConnect.
//
NS_IMETHODIMP
nsHTMLFormatConverter::GetInputDataFlavors(nsISupportsArray **_retval)
{
if ( !_retval )
return NS_ERROR_INVALID_ARG;
nsresult rv = NS_NewISupportsArray ( _retval ); // addrefs for us
if ( NS_SUCCEEDED(rv) )
rv = AddFlavorToList ( *_retval, kHTMLMime );
return rv;
} // GetInputDataFlavors
//
// GetOutputDataFlavors
//
// Creates a new list and returns the list of all the flavors this converter
// knows how to export (convert). In this case, it's all sorts of things that HTML can be
// converted to.
//
// Flavors (strings) are wrapped in a primitive object so that JavaScript can
// access them easily via XPConnect.
//
NS_IMETHODIMP
nsHTMLFormatConverter::GetOutputDataFlavors(nsISupportsArray **_retval)
{
if ( !_retval )
return NS_ERROR_INVALID_ARG;
nsresult rv = NS_NewISupportsArray ( _retval ); // addrefs for us
if ( NS_SUCCEEDED(rv) ) {
rv = AddFlavorToList ( *_retval, kHTMLMime );
if ( NS_FAILED(rv) )
return rv;
#if NOT_NOW
// pinkerton
// no one uses this flavor right now, so it's just slowing things down. If anyone cares I
// can put it back in.
rv = AddFlavorToList ( *_retval, kAOLMailMime );
if ( NS_FAILED(rv) )
return rv;
#endif
rv = AddFlavorToList ( *_retval, kUnicodeMime );
if ( NS_FAILED(rv) )
return rv;
}
return rv;
} // GetOutputDataFlavors
//
// AddFlavorToList
//
// Convenience routine for adding a flavor wrapped in an nsISupportsCString object
// to a list
//
nsresult
nsHTMLFormatConverter :: AddFlavorToList ( nsISupportsArray* inList, const char* inFlavor )
{
nsresult rv;
nsCOMPtr<nsISupportsCString> dataFlavor =
do_CreateInstance(NS_SUPPORTS_CSTRING_CONTRACTID, &rv);
if ( dataFlavor ) {
dataFlavor->SetData ( nsDependentCString(inFlavor) );
// add to list as an nsISupports so the correct interface gets the addref
// in AppendElement()
nsCOMPtr<nsISupports> genericFlavor ( do_QueryInterface(dataFlavor) );
inList->AppendElement ( genericFlavor);
}
return rv;
} // AddFlavorToList
//
// CanConvert
//
// Determines if we support the given conversion. Currently, this method only
// converts from HTML to others.
//
NS_IMETHODIMP
nsHTMLFormatConverter::CanConvert(const char *aFromDataFlavor, const char *aToDataFlavor, bool *_retval)
{
if ( !_retval )
return NS_ERROR_INVALID_ARG;
*_retval = false;
if ( !nsCRT::strcmp(aFromDataFlavor, kHTMLMime) ) {
if ( !nsCRT::strcmp(aToDataFlavor, kHTMLMime) )
*_retval = true;
else if ( !nsCRT::strcmp(aToDataFlavor, kUnicodeMime) )
*_retval = true;
#if NOT_NOW
// pinkerton
// no one uses this flavor right now, so it's just slowing things down. If anyone cares I
// can put it back in.
else if ( toFlavor.Equals(kAOLMailMime) )
*_retval = true;
#endif
}
return NS_OK;
} // CanConvert
//
// Convert
//
// Convert data from one flavor to another. The data is wrapped in primitive objects so that it is
// accessible from JS. Currently, this only accepts HTML input, so anything else is invalid.
//
//XXX This method copies the data WAAAAY too many time for my liking. Grrrrrr. Mostly it's because
//XXX we _must_ put things into nsStrings so that the parser will accept it. Lame lame lame lame. We
//XXX also can't just get raw unicode out of the nsString, so we have to allocate heap to get
//XXX unicode out of the string. Lame lame lame.
//
NS_IMETHODIMP
nsHTMLFormatConverter::Convert(const char *aFromDataFlavor, nsISupports *aFromData, uint32_t aDataLen,
const char *aToDataFlavor, nsISupports **aToData, uint32_t *aDataToLen)
{
if ( !aToData || !aDataToLen )
return NS_ERROR_INVALID_ARG;
nsresult rv = NS_OK;
*aToData = nullptr;
*aDataToLen = 0;
if ( !nsCRT::strcmp(aFromDataFlavor, kHTMLMime) ) {
nsAutoCString toFlavor ( aToDataFlavor );
// HTML on clipboard is going to always be double byte so it will be in a primitive
// class of nsISupportsString. Also, since the data is in two byte chunks the
// length represents the length in 1-byte chars, so we need to divide by two.
nsCOMPtr<nsISupportsString> dataWrapper0 ( do_QueryInterface(aFromData) );
if (!dataWrapper0) {
return NS_ERROR_INVALID_ARG;
}
nsAutoString dataStr;
dataWrapper0->GetData ( dataStr ); //<2F><><EFBFBD> COPY #1
// note: conversion to text/plain is done inside the clipboard. we do not need to worry
// about it here.
if ( toFlavor.Equals(kHTMLMime) || toFlavor.Equals(kUnicodeMime) ) {
nsresult res;
if (toFlavor.Equals(kHTMLMime)) {
int32_t dataLen = dataStr.Length() * 2;
nsPrimitiveHelpers::CreatePrimitiveForData ( toFlavor.get(), dataStr.get(), dataLen, aToData );
if ( *aToData )
*aDataToLen = dataLen;
} else {
nsAutoString outStr;
res = ConvertFromHTMLToUnicode(dataStr, outStr);
if (NS_SUCCEEDED(res)) {
int32_t dataLen = outStr.Length() * 2;
nsPrimitiveHelpers::CreatePrimitiveForData ( toFlavor.get(), outStr.get(), dataLen, aToData );
if ( *aToData )
*aDataToLen = dataLen;
}
}
} // else if HTML or Unicode
else if ( toFlavor.Equals(kAOLMailMime) ) {
nsAutoString outStr;
if ( NS_SUCCEEDED(ConvertFromHTMLToAOLMail(dataStr, outStr)) ) {
int32_t dataLen = outStr.Length() * 2;
nsPrimitiveHelpers::CreatePrimitiveForData ( toFlavor.get(), outStr.get(), dataLen, aToData );
if ( *aToData )
*aDataToLen = dataLen;
}
} // else if AOL mail
else {
rv = NS_ERROR_FAILURE;
}
} // if we got html mime
else
rv = NS_ERROR_FAILURE;
return rv;
} // Convert
//
// ConvertFromHTMLToUnicode
//
// Takes HTML and converts it to plain text but in unicode.
//
NS_IMETHODIMP
nsHTMLFormatConverter::ConvertFromHTMLToUnicode(const nsAutoString & aFromStr, nsAutoString & aToStr)
{
return nsContentUtils::ConvertToPlainText(aFromStr,
aToStr,
nsIDocumentEncoder::OutputSelectionOnly |
nsIDocumentEncoder::OutputAbsoluteLinks |
nsIDocumentEncoder::OutputNoScriptContent |
nsIDocumentEncoder::OutputNoFramesContent,
0);
} // ConvertFromHTMLToUnicode
NS_IMETHODIMP
nsHTMLFormatConverter::ConvertFromHTMLToAOLMail(const nsAutoString & aFromStr,
nsAutoString & aToStr)
{
aToStr.AssignLiteral("<HTML>");
aToStr.Append(aFromStr);
aToStr.AppendLiteral("</HTML>");
return NS_OK;
}