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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Tue Nov 30 14:11:21 MST 2004 --><TITLE>Swarm 2.2 Reference Guide: Interface CanvasAbstractItem</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT ID="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT ID="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT ID="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT ID="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html"><FONT ID="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT ID="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../swarm/gui/Canvas.html"><B>PREV CLASS</B></A> <A HREF="../../swarm/gui/CanvasAbstractItemC.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="CanvasAbstractItem.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">swarm.gui</FONT><BR>Interface CanvasAbstractItem</H2><DL><DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../swarm/gui/CanvasItem.html">CanvasItem</A>, <A HREF="../../swarm/gui/CompositeItem.html">CompositeItem</A>, <A HREF="../../swarm/gui/LinkItem.html">LinkItem</A>, <A HREF="../../swarm/gui/NodeItem.html">NodeItem</A>, <A HREF="../../swarm/gui/OvalNodeItem.html">OvalNodeItem</A>, <A HREF="../../swarm/gui/RectangleNodeItem.html">RectangleNodeItem</A></DD></DL><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../swarm/gui/CanvasItemImpl.html">CanvasItemImpl</A></DD></DL><HR><DL><DT>public interface <B>CanvasAbstractItem</B><DT>extends <A HREF="../../swarm/defobj/Create.html">Create</A>, <A HREF="../../swarm/defobj/CreateS.html">CreateS</A>, <A HREF="../../swarm/defobj/Drop.html">Drop</A>, <A HREF="../../swarm/defobj/DropS.html">DropS</A></DL><P><strong> An abstract class for items on a Canvas.</strong>.CanvasAbstractItem is the root class of all items drawn on a Canvas.<P><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../swarm/gui/CanvasAbstractItem.html#clicked()">clicked</A></B>()</CODE><BR> Called when a mouse click occurs.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../swarm/gui/Canvas.html">Canvas</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../swarm/gui/CanvasAbstractItem.html#getCanvas()">getCanvas</A></B>()</CODE><BR> Return the canvas.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../swarm/gui/CanvasAbstractItem.html#initiateMoveX$Y(int, int)">initiateMoveX$Y</A></B>(int deltaX, int deltaY)</CODE><BR> Method to be implemented by subclass.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../swarm/gui/CanvasAbstractItem.html#setClickSel(swarm.Selector)">setClickSel</A></B>(<A HREF="../../swarm/Selector.html">Selector</A> sel)</CODE><BR> Sets the message that will be sent upon a click on this item.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../swarm/gui/CanvasAbstractItem.html#setMoveSel(swarm.Selector)">setMoveSel</A></B>(<A HREF="../../swarm/Selector.html">Selector</A> sel)</CODE><BR> Sets the message that will effect the motion of the item on the canvas.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../swarm/gui/CanvasAbstractItem.html#setPostMoveSel(swarm.Selector)">setPostMoveSel</A></B>(<A HREF="../../swarm/Selector.html">Selector</A> sel)</CODE><BR> Sets the message that will dictate what happens after the item is moved.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../swarm/gui/CanvasAbstractItem.html#setTargetId(java.lang.Object)">setTargetId</A></B>(java.lang.Object target)</CODE><BR> Designates the object to which this item refers.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_swarm.defobj.Drop"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from interface swarm.defobj.<A HREF="../../swarm/defobj/Drop.html">Drop</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../swarm/defobj/Drop.html#drop()">drop</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_swarm.defobj.DefinedObject"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from interface swarm.defobj.<A HREF="../../swarm/defobj/DefinedObject.html">DefinedObject</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../swarm/defobj/DefinedObject.html#compare(java.lang.Object)">compare</A>, <A HREF="../../swarm/defobj/DefinedObject.html#describe(java.lang.Object)">describe</A>, <A HREF="../../swarm/defobj/DefinedObject.html#describeID(java.lang.Object)">describeID</A>, <A HREF="../../swarm/defobj/DefinedObject.html#getDisplayName()">getDisplayName</A>, <A HREF="../../swarm/defobj/DefinedObject.html#getTypeName()">getTypeName</A>, <A HREF="../../swarm/defobj/DefinedObject.html#getZone()">getZone</A>, <A HREF="../../swarm/defobj/DefinedObject.html#perform(swarm.Selector)">perform</A>, <A HREF="../../swarm/defobj/DefinedObject.html#perform$with(swarm.Selector, java.lang.Object)">perform$with</A>, <A HREF="../../swarm/defobj/DefinedObject.html#perform$with$with(swarm.Selector, java.lang.Object, java.lang.Object)">perform$with$with</A>, <A HREF="../../swarm/defobj/DefinedObject.html#perform$with$with$with(swarm.Selector, java.lang.Object, java.lang.Object, java.lang.Object)">perform$with$with$with</A>, <A HREF="../../swarm/defobj/DefinedObject.html#respondsTo(swarm.Selector)">respondsTo</A>, <A HREF="../../swarm/defobj/DefinedObject.html#setDisplayName(java.lang.String)">setDisplayName</A>, <A HREF="../../swarm/defobj/DefinedObject.html#xfprint()">xfprint</A>, <A HREF="../../swarm/defobj/DefinedObject.html#xfprintid()">xfprintid</A>, <A HREF="../../swarm/defobj/DefinedObject.html#xprint()">xprint</A>, <A HREF="../../swarm/defobj/DefinedObject.html#xprintid()">xprintid</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_swarm.defobj.GetName"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from interface swarm.defobj.<A HREF="../../swarm/defobj/GetName.html">GetName</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../swarm/defobj/GetName.html#getName()">getName</A></CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="setTargetId(java.lang.Object)"><!-- --></A><H3>setTargetId</H3><PRE>public void <B>setTargetId</B>(java.lang.Object target)</PRE><DL><DD>Designates the object to which this item refers.<DD><DL></DL></DD></DL><HR><A NAME="setClickSel(swarm.Selector)"><!-- --></A><H3>setClickSel</H3><PRE>public void <B>setClickSel</B>(<A HREF="../../swarm/Selector.html">Selector</A> sel)</PRE><DL><DD>Sets the message that will be sent upon a click on this item.<DD><DL></DL></DD></DL><HR><A NAME="setMoveSel(swarm.Selector)"><!-- --></A><H3>setMoveSel</H3><PRE>public void <B>setMoveSel</B>(<A HREF="../../swarm/Selector.html">Selector</A> sel)</PRE><DL><DD>Sets the message that will effect the motion of the item on the canvas.<DD><DL></DL></DD></DL><HR><A NAME="setPostMoveSel(swarm.Selector)"><!-- --></A><H3>setPostMoveSel</H3><PRE>public void <B>setPostMoveSel</B>(<A HREF="../../swarm/Selector.html">Selector</A> sel)</PRE><DL><DD>Sets the message that will dictate what happens after the item is moved.<DD><DL></DL></DD></DL><HR><A NAME="clicked()"><!-- --></A><H3>clicked</H3><PRE>public void <B>clicked</B>()</PRE><DL><DD>Called when a mouse click occurs.<DD><DL></DL></DD></DL><HR><A NAME="initiateMoveX$Y(int, int)"><!-- --></A><H3>initiateMoveX$Y</H3><PRE>public void <B>initiateMoveX$Y</B>(int deltaX, int deltaY)</PRE><DL><DD>Method to be implemented by subclass.<DD><DL></DL></DD></DL><HR><A NAME="getCanvas()"><!-- --></A><H3>getCanvas</H3><PRE>public <A HREF="../../swarm/gui/Canvas.html">Canvas</A> <B>getCanvas</B>()</PRE><DL><DD>Return the canvas.<DD><DL></DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_bottom"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT ID="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT ID="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT 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