If a datapath's replication attribute is set to
"lazy", then a match to multiple nodes will create an
lz.LazyReplicationManager
instead of an lz.ReplicationManager.
The lazy replication manager creates only enough replicated views in order
to display the data, so there is not a view for each data node. This
enables the display of very large datasets.
With lazy replication you must use a lz.dataselectionmanager
instead of a lz.selectionmanager.
The lz.dataselectionmanager will operate on the data
itself, instead of on the views (which may not be present if the data has
scrolled out of view). For each dataset you are controlling, you can have
only one lz.dataselectionmanager operating on it.
As with a lz.selectionmanager, ctrl-click will select multiple items and shift-click will
select a range. To modify this behavior, you can extend the lz.dataselectionmanager
and implement isRangeSelect and isMultiSelect.
<canvas height="200">
<dataset name="mydata">
<list>
<item>tricycle</item>
<item>train</item>
<item>racecar</item>
<item>scooter</item>
<item>bicycle</item>
<item>rollerblades</item>
<item>iceskates</item>
<item>minivan</item>
<item>sailboat</item>
<item>motorboat</item>
</list>
</dataset>
<class name="selectme" onclick="immediateparent.selector.select(this)" height="17" width="100" bgcolor="white">
<text datapath="text()"/>
<method name="setSelected" args="isselected">
this.setAttribute('bgcolor', isselected ? 'yellow' : 'white');
</method>
</class>
<view height="70" clip="true">
<view>
<dataselectionmanager name="selector"/>
<selectme>
<datapath xpath="mydata:/list/item" replication="lazy"/>
</selectme>
</view>
<scrollbar/>
</view>
</canvas>
Attributes inherited from <node>
classroot, cloneManager, data, datapath, defaultplacement, id, ignoreplacement, immediateparent, inited, initstage, name, nodeLevel, options, parent, placement, styleclass, subnodes, transition
Methods
Methods inherited from <selectionmanager>
clearSelection, getSelection, isMultiSelect, isRangeSelect, isSelected, select, unselect
Methods inherited from <node>
animate, applyConstraintMethod, applyData, childOf, completeInstantiation, construct, createChildren, dataBindAttribute, destroy, determinePlacement, getOption, getUID, init, lookupSourceLocator, releaseConstraint, releaseConstraintMethod, searchImmediateSubnodes, searchSubnodes, setOption, setSelected, updateData
Events