<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <!--Rendered using the Haskell Html Library v0.2--> <HTML ><HEAD ><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8" ><TITLE >Graphics.UI.Gtk.ModelView.TreeRowReference</TITLE ><LINK HREF="haddock.css" REL="stylesheet" TYPE="text/css" ><SCRIPT SRC="haddock-util.js" TYPE="text/javascript" ></SCRIPT ><SCRIPT TYPE="text/javascript" >window.onload = function () {setSynopsis("mini_Graphics-UI-Gtk-ModelView-TreeRowReference.html")};</SCRIPT ></HEAD ><BODY ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="topbar" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD ><IMG SRC="haskell_icon.gif" WIDTH="16" HEIGHT="16" ALT=" " ></TD ><TD CLASS="title" >gtk-0.11.2: Binding to the Gtk+ graphical user interface library.</TD ><TD CLASS="topbut" ><A HREF="src/Graphics-UI-Gtk-ModelView-TreeRowReference.html" >Source code</A ></TD ><TD CLASS="topbut" ><A HREF="index.html" >Contents</A ></TD ><TD CLASS="topbut" ><A HREF="doc-index.html" >Index</A ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="modulebar" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD ><FONT SIZE="6" >Graphics.UI.Gtk.ModelView.TreeRowReference</FONT ></TD ><TD ALIGN="right" ><TABLE CLASS="narrow" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="infohead" >Portability</TD ><TD CLASS="infoval" >portable (depends on GHC)</TD ></TR ><TR ><TD CLASS="infohead" >Stability</TD ><TD CLASS="infoval" >provisional</TD ></TR ><TR ><TD CLASS="infohead" >Maintainer</TD ><TD CLASS="infoval" >gtk2hs-users@lists.sourceforge.net</TD ></TR ></TABLE ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="section4" ><B >Contents</B ></TD ></TR ><TR ><TD ><DL ><DT ><A HREF="#1" >Detail </A ></DT ><DT ><A HREF="#2" >Types </A ></DT ><DT ><A HREF="#3" >Constructors </A ></DT ><DT ><A HREF="#4" >Methods </A ></DT ></DL ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="section1" >Description</TD ></TR ><TR ><TD CLASS="doc" >A persistent index into a tree model. </TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="section1" >Synopsis</TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="body" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="decl" ><SPAN CLASS="keyword" >data</SPAN > <A HREF="#t%3ATreeRowReference" >TreeRowReference</A > </TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3AtreeRowReferenceNew" >treeRowReferenceNew</A > :: <A HREF="Graphics-UI-Gtk-ModelView-TreeModel.html#t%3ATreeModelClass" >TreeModelClass</A > self => self -> <A HREF="Graphics-UI-Gtk-ModelView-TreeModel.html#t%3ATreePath" >TreePath</A > -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/System-IO.html#t%3AIO" >IO</A > (<A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Maybe.html#t%3AMaybe" >Maybe</A > <A HREF="Graphics-UI-Gtk-ModelView-TreeRowReference.html#t%3ATreeRowReference" >TreeRowReference</A >)</TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3AtreeRowReferenceGetPath" >treeRowReferenceGetPath</A > :: <A HREF="Graphics-UI-Gtk-ModelView-TreeRowReference.html#t%3ATreeRowReference" >TreeRowReference</A > -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/System-IO.html#t%3AIO" >IO</A > <A HREF="Graphics-UI-Gtk-ModelView-TreeModel.html#t%3ATreePath" >TreePath</A ></TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3AtreeRowReferenceValid" >treeRowReferenceValid</A > :: <A HREF="Graphics-UI-Gtk-ModelView-TreeRowReference.html#t%3ATreeRowReference" >TreeRowReference</A > -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/System-IO.html#t%3AIO" >IO</A > <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Bool.html#t%3ABool" >Bool</A ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="section1" ><A NAME="1" ><A NAME="1" >Detail </A ></A ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="doc" >A RowReference is an index into a Graphics.UI.Gtk.ModelView.TreeModel.TreeModel that is persistent even if rows are inserted, deleted or reordered. </TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="section1" ><A NAME="2" ><A NAME="2" >Types </A ></A ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="topdecl" ><TABLE CLASS="declbar" ><TR ><TD CLASS="declname" ><SPAN CLASS="keyword" >data</SPAN > <A NAME="t:TreeRowReference" ><A NAME="t%3ATreeRowReference" ></A ></A ><B >TreeRowReference</B > </TD ><TD CLASS="declbut" ><A HREF="src/Graphics-UI-Gtk-ModelView-TreeRowReference.html#TreeRowReference" >Source</A ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="body" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="ndoc" >Tree Row Reference : like a <TT ><A HREF="Graphics-UI-Gtk-ModelView-TreeModel.html#t%3ATreePath" >TreePath</A ></TT > it points to a subtree or node, but it is persistent. It identifies the same node (so long as it exists) even when items are added, removed, or reordered. </TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="section1" ><A NAME="3" ><A NAME="3" >Constructors </A ></A ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="topdecl" ><TABLE CLASS="declbar" ><TR ><TD CLASS="declname" ><A NAME="v:treeRowReferenceNew" ><A NAME="v%3AtreeRowReferenceNew" ></A ></A ><B >treeRowReferenceNew</B > :: <A HREF="Graphics-UI-Gtk-ModelView-TreeModel.html#t%3ATreeModelClass" >TreeModelClass</A > self => self -> <A HREF="Graphics-UI-Gtk-ModelView-TreeModel.html#t%3ATreePath" >TreePath</A > -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/System-IO.html#t%3AIO" >IO</A > (<A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Maybe.html#t%3AMaybe" >Maybe</A > <A HREF="Graphics-UI-Gtk-ModelView-TreeRowReference.html#t%3ATreeRowReference" >TreeRowReference</A >)</TD ><TD CLASS="declbut" ><A HREF="src/Graphics-UI-Gtk-ModelView-TreeRowReference.html#treeRowReferenceNew" >Source</A ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="doc" >Creates a row reference based on a path. This reference will keep pointing to the node pointed to by the given path, so long as it exists. Returns <TT >Nothing</TT > if there is no node at the given path. </TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="section1" ><A NAME="4" ><A NAME="4" >Methods </A ></A ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="topdecl" ><TABLE CLASS="declbar" ><TR ><TD CLASS="declname" ><A NAME="v:treeRowReferenceGetPath" ><A NAME="v%3AtreeRowReferenceGetPath" ></A ></A ><B >treeRowReferenceGetPath</B > :: <A HREF="Graphics-UI-Gtk-ModelView-TreeRowReference.html#t%3ATreeRowReference" >TreeRowReference</A > -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/System-IO.html#t%3AIO" >IO</A > <A HREF="Graphics-UI-Gtk-ModelView-TreeModel.html#t%3ATreePath" >TreePath</A ></TD ><TD CLASS="declbut" ><A HREF="src/Graphics-UI-Gtk-ModelView-TreeRowReference.html#treeRowReferenceGetPath" >Source</A ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="doc" ><P >Returns a path that the row reference currently points to. </P ><UL ><LI > The returned path may be the empty list if the reference was invalid. </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="topdecl" ><TABLE CLASS="declbar" ><TR ><TD CLASS="declname" ><A NAME="v:treeRowReferenceValid" ><A NAME="v%3AtreeRowReferenceValid" ></A ></A ><B >treeRowReferenceValid</B > :: <A HREF="Graphics-UI-Gtk-ModelView-TreeRowReference.html#t%3ATreeRowReference" >TreeRowReference</A > -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/System-IO.html#t%3AIO" >IO</A > <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Bool.html#t%3ABool" >Bool</A ></TD ><TD CLASS="declbut" ><A HREF="src/Graphics-UI-Gtk-ModelView-TreeRowReference.html#treeRowReferenceValid" >Source</A ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="doc" >Returns True if the reference refers to a current valid path. </TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="botbar" >Produced by <A HREF="http://www.haskell.org/haddock/" >Haddock</A > version 2.6.1</TD ></TR ></TABLE ></BODY ></HTML >