zoneview.html

API資料大全

 an attempt is made to display or perform a model/view
 translation on a zone that was in an unloaded state.
 This is imlemented to check if the maximum number of
 zones was reached and to unload the oldest zone if so.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>zone</CODE> - the child view that was just loaded.</DL>
</DD>
</DL>
<HR>

<A NAME="unloadZone(javax.swing.text.View)"><!-- --></A><H3>
unloadZone</H3>
<PRE>
protected void <B>unloadZone</B>(<A HREF="../../../javax/swing/text/View.html">View</A>&nbsp;zone)</PRE>
<DL>
<DD>Unload a zone (Convert the zone to its memory saving state).
 The zones are expected to represent a subset of the
 child elements of the element this view is responsible for.
 Therefore, the default implementation is to simple remove
 all the children.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>zone</CODE> - the child view desired to be set to an
  unloaded state.</DL>
</DD>
</DL>
<HR>

<A NAME="isZoneLoaded(javax.swing.text.View)"><!-- --></A><H3>
isZoneLoaded</H3>
<PRE>
protected boolean <B>isZoneLoaded</B>(<A HREF="../../../javax/swing/text/View.html">View</A>&nbsp;zone)</PRE>
<DL>
<DD>Determine if a zone is in the loaded state.
 The zones are expected to represent a subset of the
 child elements of the element this view is responsible for.
 Therefore, the default implementation is to return
 true if the view has children.</DL>
<HR>

<A NAME="createZone(int, int)"><!-- --></A><H3>
createZone</H3>
<PRE>
protected <A HREF="../../../javax/swing/text/View.html">View</A> <B>createZone</B>(int&nbsp;p0,
                          int&nbsp;p1)</PRE>
<DL>
<DD>Create a view to represent a zone for the given
 range within the model (which should be within
 the range of this objects responsibility).  This
 is called by the zone management logic to create
 new zones.  Subclasses can provide a different
 implementation for a zone by changing this method.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>p0</CODE> - the start of the desired zone.  This should
  be >= getStartOffset() and < getEndOffset().  This
  value should also be < p1.<DD><CODE>p1</CODE> - the end of the desired zone.  This should
  be > getStartOffset() and <= getEndOffset().  This
  value should also be > p0.</DL>
</DD>
</DL>
<HR>

<A NAME="loadChildren(javax.swing.text.ViewFactory)"><!-- --></A><H3>
loadChildren</H3>
<PRE>
protected void <B>loadChildren</B>(<A HREF="../../../javax/swing/text/ViewFactory.html">ViewFactory</A>&nbsp;f)</PRE>
<DL>
<DD>Loads all of the children to initialize the view.
 This is called by the <code>setParent</code> method.
 This is reimplemented to not load any children directly
 (as they are created by the zones).  This method creates
 the initial set of zones.  Zones don't actually get 
 populated however until an attempt is made to display
 them or to do model/view coordinate translation.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../javax/swing/text/CompositeView.html#loadChildren(javax.swing.text.ViewFactory)">loadChildren</A></CODE> in class <CODE><A HREF="../../../javax/swing/text/CompositeView.html">CompositeView</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>f</CODE> - the view factory</DL>
</DD>
</DL>
<HR>

<A NAME="getViewIndexAtPosition(int)"><!-- --></A><H3>
getViewIndexAtPosition</H3>
<PRE>
protected int <B>getViewIndexAtPosition</B>(int&nbsp;pos)</PRE>
<DL>
<DD>Fetches the child view index representing the given position in
 the model.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../javax/swing/text/CompositeView.html#getViewIndexAtPosition(int)">getViewIndexAtPosition</A></CODE> in class <CODE><A HREF="../../../javax/swing/text/CompositeView.html">CompositeView</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pos</CODE> - the position >= 0</DL>
</DD>
</DL>
<HR>

<A NAME="updateChildren(javax.swing.event.DocumentEvent.ElementChange, javax.swing.event.DocumentEvent, javax.swing.text.ViewFactory)"><!-- --></A><H3>
updateChildren</H3>
<PRE>
protected boolean <B>updateChildren</B>(<A HREF="../../../javax/swing/event/DocumentEvent.ElementChange.html">DocumentEvent.ElementChange</A>&nbsp;ec,
                                 <A HREF="../../../javax/swing/event/DocumentEvent.html">DocumentEvent</A>&nbsp;e,
                                 <A HREF="../../../javax/swing/text/ViewFactory.html">ViewFactory</A>&nbsp;f)</PRE>
<DL>
<DD>The superclass behavior will try to update the child views
 which is not desired in this case, since the children are
 zones and not directly effected by the changes to the
 associated element.  This is reimplemented to do nothing
 and return false.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../javax/swing/text/View.html#updateChildren(javax.swing.event.DocumentEvent.ElementChange, javax.swing.event.DocumentEvent, javax.swing.text.ViewFactory)">updateChildren</A></CODE> in class <CODE><A HREF="../../../javax/swing/text/View.html">View</A></CODE></DL>
</DD>
<DD>Following copied from class: <CODE>javax.swing.text.View</CODE></DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ec</CODE> - The change information for the element this view
  is responsible for.  This should not be null if this method
  gets called.<DD><CODE>e</CODE> - the change information from the associated document<DD><CODE>f</CODE> - the factory to use to build child views<DT><B>Returns:</B><DD>whether or not the child views represent the
  child elements of the element this view is responsible
  for.  Some views create children that represent a portion 
  of the element they are responsible for, and should return
  false.  This information is used to determine if views 
  in the range of the added elements should be forwarded to
  or not.<DT><B>See Also: </B><DD><A HREF="../../../javax/swing/text/View.html#insertUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)"><CODE>View.insertUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)</CODE></A>, 
<A HREF="../../../javax/swing/text/View.html#removeUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)"><CODE>View.removeUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)</CODE></A>, 
<A HREF="../../../javax/swing/text/View.html#changedUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)"><CODE>View.changedUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="insertUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)"><!-- --></A><H3>
insertUpdate</H3>
<PRE>
public void <B>insertUpdate</B>(<A HREF="../../../javax/swing/event/DocumentEvent.html">DocumentEvent</A>&nbsp;changes,
                         <A HREF="../../../java/awt/Shape.html">Shape</A>&nbsp;a,
                         <A HREF="../../../javax/swing/text/ViewFactory.html">ViewFactory</A>&nbsp;f)</PRE>
<DL>
<DD>Gives notification that something was inserted into the document
 in a location that this view is responsible for.  This is largely
 delegated to the superclass, but is reimplemented to update the 
 relevant zone (i.e. determine if a zone needs to be split into a 
 set of 2 or more zones).<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../javax/swing/text/View.html#insertUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)">insertUpdate</A></CODE> in class <CODE><A HREF="../../../javax/swing/text/View.html">View</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>changes</CODE> - the change information from the associated document<DD><CODE>a</CODE> - the current allocation of the view<DD><CODE>f</CODE> - the factory to use to rebuild if the view has children<DT><B>See Also: </B><DD><A HREF="../../../javax/swing/text/View.html#insertUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)"><CODE>View.insertUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="removeUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)"><!-- --></A><H3>
removeUpdate</H3>
<PRE>
public void <B>removeUpdate</B>(<A HREF="../../../javax/swing/event/DocumentEvent.html">DocumentEvent</A>&nbsp;changes,
                         <A HREF="../../../java/awt/Shape.html">Shape</A>&nbsp;a,
                         <A HREF="../../../javax/swing/text/ViewFactory.html">ViewFactory</A>&nbsp;f)</PRE>
<DL>
<DD>Gives notification that something was removed from the document
 in a location that this view is responsible for.  This is largely
 delegated to the superclass, but is reimplemented to update the
 relevant zones (i.e. determine if zones need to be removed or 
 joined with another zone).<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../javax/swing/text/View.html#removeUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)">removeUpdate</A></CODE> in class <CODE><A HREF="../../../javax/swing/text/View.html">View</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>changes</CODE> - the change information from the associated document<DD><CODE>a</CODE> - the current allocation of the view<DD><CODE>f</CODE> - the factory to use to rebuild if the view has children<DT><B>See Also: </B><DD><A HREF="../../../javax/swing/text/View.html#removeUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)"><CODE>View.removeUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)</CODE></A></DL>
</DD>
</DL>
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