gtcomponent.html

Geotools是一个开源的Java GIS工具包,可利用它来开发符合标准的地理信息系统。Geotools提供了OGC(Open Geospatial Consortium)规范的一个实现来作为他们的

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Small stratagy object passed in by our parent so we can call home.
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<A NAME="getParent()"><!-- --></A><H3>
getParent</H3>
<PRE>
public <A HREF="../../../org/geotools/event/GTComponent.html" title="interface in org.geotools.event">GTComponent</A> <B>getParent</B>()</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>use getNote().getParent()</I>
<P>
<DD>Used to locate our parent.
 <p>
 This method will return a "NULLObject", called GTRoot.NO_PARENT when
 no parent is present, client code should never have to be concerned
 this method return <code>null</code>.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>Parent GTComponent or GTRoot.NO_PARENT if none</DL>
</DD>
</DL>
<HR>

<A NAME="getNote()"><!-- --></A><H3>
getNote</H3>
<PRE>
public <A HREF="../../../org/geotools/event/GTNote.html" title="interface in org.geotools.event">GTNote</A> <B>getNote</B>()</PRE>
<DL>
<DD>Small stratagy object passed in by our parent so we can call home.
 Used to pass change information "up" to our parent, to root parent
 will broadcast the events out to listeners.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setNote(org.geotools.event.GTNote)"><!-- --></A><H3>
setNote</H3>
<PRE>
public void <B>setNote</B>(<A HREF="../../../org/geotools/event/GTNote.html" title="interface in org.geotools.event">GTNote</A>&nbsp;container)</PRE>
<DL>
<DD>Small stratagy object passed in by our parent so we can call home.
 Used to pass change information "up" to our parent, to root parent
 will broadcast the events out to listeners.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>container</CODE> - </DL>
</DD>
</DL>
<HR>

<A NAME="removed(org.geotools.event.GTDelta)"><!-- --></A><H3>
removed</H3>
<PRE>
public void <B>removed</B>(<A HREF="../../../org/geotools/event/GTDelta.html" title="interface in org.geotools.event">GTDelta</A>&nbsp;delta)</PRE>
<DL>
<DD>A child has been removed, issued before change.
 <p>
 This method is for use by children <b>only</b> it is implementor
 API and should not be called by client code.
 </p>
 Q:Why does it exist then?<br>
 So you can implement your own Symbolizer,
 and still allow the GeoTools Stroke implementation to pass change
 notification onto you.
 </p>
 <p>
 Q:GeoAPI does not support this?
 No they don't, their interface are set up to match specification
 for interoptability between toolkit implementations. By the time
 you pass a GeoAPI object around it should stop wiggling and just be
 viewed as stable data. But yes we should ask them about this...
 </p>
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="changed(org.geotools.event.GTDelta)"><!-- --></A><H3>
changed</H3>
<PRE>
public void <B>changed</B>(<A HREF="../../../org/geotools/event/GTDelta.html" title="interface in org.geotools.event">GTDelta</A>&nbsp;delta)</PRE>
<DL>
<DD>A child has been changed (maybe added), issued after change.
 <p>
 This method is for use by children <b>only</b> it is implementor
 API and should not be called by client code.
 </p>
 Q:Why does it exist then?<br>
 So you can implement your own Symbolizer,
 and still allow the GeoTools Stroke implementation to pass change
 notification onto you.
 </p>
 <p>
 Q:GeoAPI does not support this?
 No they don't, their interface are set up to match specification
 for interoptability between toolkit implementations. By the time
 you pass a GeoAPI object around it should stop wiggling and just be
 viewed as stable data. But yes we should ask them about this...
 </p>
<P>
<DD><DL>
</DL>
</DD>
</DL>
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