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+/* -*- 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 "nsISupports.idl"
+interface nsIScriptError;
+
+/**
+ * This interface should be implemented by any content sink that wants
+ * to get output from expat and do something with it; in other words,
+ * by any sink that handles some sort of XML dialect.
+ */
+
+[scriptable, uuid(01f681af-0f22-4725-a914-0d396114daf0)]
+interface nsIExpatSink : nsISupports
+{
+ /**
+ * Called to handle the opening tag of an element.
+ * @param aName the fully qualified tagname of the element
+ * @param aAtts the array of attribute names and values. There are
+ * aAttsCount/2 names and aAttsCount/2 values, so the total number of
+ * elements in the array is aAttsCount. The names and values
+ * alternate. Thus, if we number attributes starting with 0,
+ * aAtts[2*k] is the name of the k-th attribute and aAtts[2*k+1] is
+ * the value of that attribute Both explicitly specified attributes
+ * and attributes that are defined to have default values in a DTD are
+ * present in aAtts.
+ * @param aAttsCount the number of elements in aAtts.
+ * @param aLineNumber the line number of the start tag in the data stream.
+ * @param aColumnNumber the 0-origin column number of the start tag in the
+ * data stream.
+ */
+ void HandleStartElement(in wstring aName,
+ [array, size_is(aAttsCount)] in wstring aAtts,
+ in unsigned long aAttsCount,
+ in unsigned long aLineNumber,
+ in unsigned long aColumnNumber);
+
+ /**
+ * Called to handle the closing tag of an element.
+ * @param aName the fully qualified tagname of the element
+ */
+ void HandleEndElement(in wstring aName);
+
+ /**
+ * Called to handle a comment
+ * @param aCommentText the text of the comment (not including the
+ * "<!--" and "-->")
+ */
+ void HandleComment(in wstring aCommentText);
+
+ /**
+ * Called to handle a CDATA section
+ * @param aData the text in the CDATA section. This is null-terminated.
+ * @param aLength the length of the aData string
+ */
+ void HandleCDataSection([size_is(aLength)] in wstring aData,
+ in unsigned long aLength);
+
+ /**
+ * Called to handle the doctype declaration
+ */
+ void HandleDoctypeDecl(in AString aSubset,
+ in AString aName,
+ in AString aSystemId,
+ in AString aPublicId,
+ in nsISupports aCatalogData);
+
+ /**
+ * Called to handle character data. Note that this does NOT get
+ * called for the contents of CDATA sections.
+ * @param aData the data to handle. aData is NOT NULL-TERMINATED.
+ * @param aLength the length of the aData string
+ */
+ void HandleCharacterData([size_is(aLength)] in wstring aData,
+ in unsigned long aLength);
+
+ /**
+ * Called to handle a processing instruction
+ * @param aTarget the PI target (e.g. xml-stylesheet)
+ * @param aData all the rest of the data in the PI
+ */
+ void HandleProcessingInstruction(in wstring aTarget,
+ in wstring aData);
+
+ /**
+ * Handle the XML Declaration.
+ *
+ * @param aVersion The version string, can be null if not specified.
+ * @param aEncoding The encoding string, can be null if not specified.
+ * @param aStandalone -1, 0, or 1 indicating respectively that there was no
+ * standalone parameter in the declaration, that it was
+ * given as no, or that it was given as yes.
+ */
+ void HandleXMLDeclaration(in wstring aVersion,
+ in wstring aEncoding,
+ in long aStandalone);
+
+ /**
+ * Ask the content sink if the expat driver should log an error to the console.
+ *
+ * @param aErrorText Error message to pass to content sink.
+ * @param aSourceText Source text of the document we're parsing.
+ * @param aError Script error object with line number & column number
+ *
+ * @retval True if the expat driver should report the error.
+ */
+ boolean ReportError(in wstring aErrorText,
+ in wstring aSourceText,
+ in nsIScriptError aError);
+};