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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
*/
package org.apache.myfaces.trinidad.component;

import java.io.IOException;
import javax.el.MethodExpression;
import javax.faces.component.NamingContainer;
import javax.faces.component.UIComponent;
import javax.faces.component.visit.VisitCallback;
import javax.faces.component.visit.VisitContext;
import javax.faces.component.visit.VisitHint;
import javax.faces.context.FacesContext;
import javax.faces.el.MethodBinding;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.FacesEvent;
import javax.faces.event.PhaseId;
import org.apache.myfaces.trinidad.bean.FacesBean;
import org.apache.myfaces.trinidad.bean.PropertyKey;
import org.apache.myfaces.trinidad.event.FocusListener;
import org.apache.myfaces.trinidad.event.RowDisclosureEvent;
import org.apache.myfaces.trinidad.event.RowDisclosureListener;
import org.apache.myfaces.trinidad.event.SelectionEvent;
import org.apache.myfaces.trinidad.event.SelectionListener;
import org.apache.myfaces.trinidad.model.CollectionModel;
import org.apache.myfaces.trinidad.model.ModelUtils;
import org.apache.myfaces.trinidad.model.RowKeySet;
import org.apache.myfaces.trinidad.model.RowKeySetTreeImpl;
import org.apache.myfaces.trinidad.model.TreeModel;
import org.apache.myfaces.trinidad.util.ComponentUtils;

/**
 *
 * 
 *             Apache Trinidad tree components are used to display hierarchical data. 
 *             For example,
 *             if we have a personnel organization chart depicting all the direct 
 *             reports under 
 *             each employee, we could use a tree component to display this
 *             chart. While each element (employee) in the hierarchy may have any 
 *             number of
 *             child elements, each element can only have one parent element.
 *           
 *       
 *           
* * The Apache Trinidad tree components use a model to access the data in the * underlying hierarchy. The specific model class is * org.apache.myfaces.trinidad.model.TreeModel. * * You may find the * org.apache.myfaces.trinidad.model.ChildPropertyTreeModel class * useful when constructing a TreeModel. * *
* *
* * The tree components use a stamping strategy similar to the Trinidad Table * component. Child components are used to display the * data for each element in the tree. Each child component is not recreated * per element; instead, each child is repeatedly * rendered (stamped) once per element. Because of this stamping * behavior, only certain types of components are supported as * children. Supported components include all * components with no behavior and most components that implement the * EditableValueHolder or ActionSource interfaces. * * * Each time a child component is stamped, the data for the current * element is copied into an EL reachable property. The * name of this property is defined by the var * property on * the tree component. Once the tree has completed rendering, this property is * removed (or reverted back to its previous value). * *
*
* * When the user expands or collapses a subtree the tree * generates a DisclosureEvent. This event has an * isExpanded method that returns whether the user wants * to expand or collapse the subtree of a particular element. That * particular element is made current on the Tree before the event is * delivered. * *
* *
* * The Trinidad tree components use an instance of the * org.apache.myfaces.trinidad.model.RowKeySet * class to keep track * of which elements are expanded. This instance is stored * as the "expandedRowKeys" attribute on the component. You may use this * instance to programmatically control the expand/collapse state of an * element in the hierarchy. * *
* *

Events:

* * * * * * * * * * * * * * * * * * * * * * * * * * *
TypePhasesDescription
org.apache.myfaces.trinidad.event.RowDisclosureEventApply
Request
Values
Invoke
Application
The expansion event is generated for a table when the detail facet of a row is expanded or collapsed. For tree or a treeTable, the expansion event is generated when tree nodes are expanded or collapsed.
org.apache.myfaces.trinidad.event.SelectionEventApply
Request
Values
Invoke
Application
The selection event is delivered when the table selection changes.
org.apache.myfaces.trinidad.event.FocusEventApply
Request
Values
Invoke
Application
Event delivered when user clicks to focus on (or zoom into) a particular element's subtree of children. The TreeTable responds to this event by modifying the "focusPath" property appropriately. Subsequently, any registered FocusListener instances are called.
org.apache.myfaces.trinidad.event.AttributeChangeEventInvoke
Application
Apply
Request
Values
Event delivered to describe an attribute change. Attribute change events are not delivered for any programmatic change to a property. They are only delivered when a renderer changes a property without the application's specific request. An example of an attribute change event might include the width of a column that supported client-side resizing.
*/ public class UIXTree extends org.apache.myfaces.trinidad.component.UIXHierarchy implements NamingContainer { static public final FacesBean.Type TYPE = new FacesBean.Type( org.apache.myfaces.trinidad.component.UIXHierarchy.TYPE); static public final PropertyKey SELECTED_ROW_KEYS_KEY = TYPE.registerKey("selectedRowKeys", RowKeySet.class, null, 0, PropertyKey.Mutable.OFTEN); static public final PropertyKey IMMEDIATE_KEY = TYPE.registerKey("immediate", Boolean.class, Boolean.FALSE); static public final PropertyKey ROW_DISCLOSURE_LISTENER_KEY = TYPE.registerKey("rowDisclosureListener", MethodExpression.class); static public final PropertyKey DISCLOSED_ROW_KEYS_KEY = TYPE.registerKey("disclosedRowKeys", RowKeySet.class, null, 0, PropertyKey.Mutable.OFTEN); static public final PropertyKey SELECTION_LISTENER_KEY = TYPE.registerKey("selectionListener", MethodExpression.class); static public final PropertyKey VAR_STATUS_KEY = TYPE.registerKey("varStatus", String.class, PropertyKey.CAP_NOT_BOUND); static public final PropertyKey VALUE_KEY = TYPE.registerKey("value"); static public final PropertyKey FOCUS_ROW_KEY_KEY = TYPE.registerKey("focusRowKey"); static public final PropertyKey FOCUS_LISTENER_KEY = TYPE.registerKey("focusListener", MethodExpression.class); static public final PropertyKey INITIALLY_EXPANDED_KEY = TYPE.registerKey("initiallyExpanded", Boolean.class, Boolean.FALSE); static public final String NODE_STAMP_FACET = "nodeStamp"; static public final String COMPONENT_FAMILY = "org.apache.myfaces.trinidad.Tree"; static public final String COMPONENT_TYPE = "org.apache.myfaces.trinidad.Tree"; /** * Construct an instance of the UIXTree. */ public UIXTree() { super("org.apache.myfaces.trinidad.Tree"); } // These are "fake" properties that allow the table to get the disclosed row keys and the // selected row key without triggering the call to getCollectionModel from the // RowKeyFacesBeanWrapper class. See the stamp state saving code for its usage. static private final PropertyKey _DISCLOSED_ROW_KEYS_WITHOUT_MODEL_KEY = TYPE.registerKey("disclosedRowKeysWithoutModel", RowKeySet.class); static private final PropertyKey _SELECTED_ROW_KEYS_WITHOUT_MODEL_KEY = TYPE.registerKey("selectedRowKeysWithoutModel", RowKeySet.class); @Deprecated public void setRowDisclosureListener(MethodBinding binding) { setRowDisclosureListener(adaptMethodBinding(binding)); } @Deprecated public void setSelectionListener(MethodBinding binding) { setSelectionListener(adaptMethodBinding(binding)); } /** * Sets the phaseID of UI events depending on the "immediate" property. */ @Override public void queueEvent(FacesEvent event) { TableUtils.__handleQueueEvent(this, event); super.queueEvent(event); } /** * Delivers an event. * @param event * @throws javax.faces.event.AbortProcessingException */ @Override public void broadcast(FacesEvent event) throws AbortProcessingException { if (event instanceof SelectionEvent) { //pu: Implicitly record a Change for 'selectionState' attribute //=-=pu: This ain't getting restored. Check with Arj or file a bug. addAttributeChange("selectedRowKeys", getSelectedRowKeys()); broadcastToMethodExpression(event, getSelectionListener()); } HierarchyUtils.__handleBroadcast(this, event, getDisclosedRowKeys(), getRowDisclosureListener()); super.broadcast(event); } @Override protected void postCreateCollectionModel(CollectionModel model) { RowKeySet selectedRowKeys = getSelectedRowKeys(); if (selectedRowKeys == null) { selectedRowKeys = new RowKeySetTreeImpl(); setSelectedRowKeys(selectedRowKeys); } RowKeySet disclosedRowKeys = getDisclosedRowKeys(); if (disclosedRowKeys == null) { disclosedRowKeys = new RowKeySetTreeImpl(); setDisclosedRowKeys(disclosedRowKeys); } selectedRowKeys.setCollectionModel(model); disclosedRowKeys.setCollectionModel(model); } @Override public CollectionModel createCollectionModel(CollectionModel current, Object value) { TreeModel model = ModelUtils.toTreeModel(value); model.setRowKey(null); return model; } @Override protected void processFacetsAndChildren( FacesContext context, PhaseId phaseId) { // this component has no facets that need to be processed once. // instead process the "nodeStamp" facet as many times as necessary: HierarchyUtils.__iterateOverTree(context, phaseId, this, getDisclosedRowKeys(), true); } @Override protected boolean visitChildren( VisitContext visitContext, VisitCallback callback) { if (ComponentUtils.isSkipIterationVisit(visitContext)) { return visitChildrenWithoutIterating(visitContext, callback); } else { return visitData(visitContext, callback); } } @Override protected boolean visitData( VisitContext visitContext, VisitCallback callback) { // if we are only visiting rendered stamps, then pass in the disclosed row keys, otherwise // pass in null, indicating that all row keys should be visited RowKeySet disclosedRowKeys = (visitContext.getHints().contains(VisitHint.SKIP_UNRENDERED)) ? getDisclosedRowKeys() : null; return visitHierarchy(visitContext, callback, getStamps(), disclosedRowKeys); } @Override void __init() { super.__init(); if (getDisclosedRowKeys() == null) setDisclosedRowKeys(new RowKeySetTreeImpl()); if (getSelectedRowKeys() == null) setSelectedRowKeys(new RowKeySetTreeImpl()); } /** * Gets the internal state of this component. */ @Override Object __getMyStampState() { Object[] state = new Object[4]; state[0] = super.__getMyStampState(); state[1] = getFocusRowKey(); // Use "hidden" property keys to allow the row key sets to be retrieved without the // RowKeyFacesBeanWrapper trying to resolve the collection model to be set into the row key // set. This is needed to stop the unnecessary lookup of the collection model when it is not // needed during stamp state saving of the table. RowKeySet selectedRowKeys = (RowKeySet)getProperty(_SELECTED_ROW_KEYS_WITHOUT_MODEL_KEY); RowKeySet disclosedRowKeys = (RowKeySet)getProperty(_DISCLOSED_ROW_KEYS_WITHOUT_MODEL_KEY); state[2] = selectedRowKeys; state[3] = disclosedRowKeys; return state; } /** * Sets the internal state of this component. * @param stampState the internal state is obtained from this object. */ @Override @SuppressWarnings("unchecked") void __setMyStampState(Object stampState) { Object[] state = (Object[]) stampState; super.__setMyStampState(state[0]); setFocusRowKey(state[1]); setSelectedRowKeys((RowKeySet) state[2]); setDisclosedRowKeys((RowKeySet) state[3]); } @Override void __resetMyStampState() { super.__resetMyStampState(); setFocusRowKey(null); setSelectedRowKeys(null); setDisclosedRowKeys(null); } @Override protected FacesBean createFacesBean(String rendererType) { return new RowKeyFacesBeanWrapper(super.createFacesBean(rendererType)); } private class RowKeyFacesBeanWrapper extends FacesBeanWrapper { private boolean _retrievingDisclosedRows = false; private boolean _retrievingSelectedRows = false; RowKeyFacesBeanWrapper(FacesBean bean) { super(bean); } @Override public Object getProperty(PropertyKey key) { if (key == _DISCLOSED_ROW_KEYS_WITHOUT_MODEL_KEY) { // This case is only true if the table is trying to serialize the disclosed row keys to // the stamp state of a parent UIXCollection. This work-around prevents EL evaluation to // get the collection model during stamp state saving. This should be permissible as the // state saving code does not need the collection model to be set in the row key set in // order to save its state. return super.getProperty(DISCLOSED_ROW_KEYS_KEY); } else if (key == _SELECTED_ROW_KEYS_WITHOUT_MODEL_KEY) { // This case is only true if the table is trying to serialize the selected row keys to // the stamp state of a parent UIXCollection. This work-around prevents EL evaluation to // get the collection model during stamp state saving. This should be permissible as the // state saving code does not need the collection model to be set in the row key set in // order to save its state. return super.getProperty(SELECTED_ROW_KEYS_KEY); } Object value = super.getProperty(key); if (key == DISCLOSED_ROW_KEYS_KEY) { if (!_retrievingDisclosedRows && value instanceof RowKeySet) { // Ensure that when we are retrieving and setting the collection model, this property // is not asked for which would create an infinite loop _retrievingDisclosedRows = true; try { RowKeySet rowKeys = (RowKeySet) value; // row key sets need the most recent collection model, but there is no one common entry // point to set this on the set besides when code asks for the value from the bean rowKeys.setCollectionModel(getCollectionModel()); } finally { _retrievingDisclosedRows = false; } } } else if (key == SELECTED_ROW_KEYS_KEY) { if (!_retrievingSelectedRows && value instanceof RowKeySet) { // Ensure that when we are retrieving and setting the collection model, this property // is not asked for which would create an infinite loop _retrievingSelectedRows = true; try { RowKeySet rowKeys = (RowKeySet) value; // row key sets need the most recent collection model, but there is no one common entry // point to set this on the set besides when code asks for the value from the bean rowKeys.setCollectionModel(getCollectionModel()); } finally { _retrievingSelectedRows = false; } } } return value; } @Override public Object saveState(FacesContext context) { RowKeySet rowKeys = (RowKeySet)super.getProperty(DISCLOSED_ROW_KEYS_KEY); if (rowKeys != null) { // make sure the set does not pin the model in memory rowKeys.setCollectionModel(null); } rowKeys = (RowKeySet)super.getProperty(SELECTED_ROW_KEYS_KEY); if (rowKeys != null) { // make sure the set does not pin the model in memory rowKeys.setCollectionModel(null); } return super.saveState(context); } } /** * @see org.apache.myfaces.trinidad.component.UIXCollection#__encodeBegin(javax.faces.context.FacesContext) */ @Override @SuppressWarnings("unchecked") protected void __encodeBegin(FacesContext context) throws IOException { if (isInitiallyExpanded() && !Boolean.TRUE.equals(getAttributes().get(EXPAND_ONCE_KEY))) { Object oldRowKey = getRowKey(); try { Object rowKey = getFocusRowKey(); if (rowKey == null) { setRowIndex(0); rowKey = getRowKey(); } setRowKey(rowKey); RowKeySet old = getDisclosedRowKeys(); RowKeySet newset = old.clone(); newset.addAll(); // use an event to ensure the row disclosure listener is called UIXComponent.broadcastInContext(context, new RowDisclosureEvent(old, newset, this)); } finally { setRowKey(oldRowKey); } // use attributes to store that we have processed the initial expansion // as there is no support for private properties in the plug-in at the // moment getAttributes().put(EXPAND_ONCE_KEY, Boolean.TRUE); } super.__encodeBegin(context); } private final static String EXPAND_ONCE_KEY = "initialExpandCompleted"; /** * the component to use to stamp each element in the * tree. Only certain types of components are supported, * including all * components with no behavior and most components that implement the * EditableValueHolder or ActionSource interfaces. In a treeTable, this must be a column. */ final public UIComponent getNodeStamp() { return getFacet(NODE_STAMP_FACET); } /** * the component to use to stamp each element in the * tree. Only certain types of components are supported, * including all * components with no behavior and most components that implement the * EditableValueHolder or ActionSource interfaces. In a treeTable, this must be a column. */ @SuppressWarnings("unchecked") final public void setNodeStamp(UIComponent nodeStampFacet) { getFacets().put(NODE_STAMP_FACET, nodeStampFacet); } /** * Gets the selection state for this component. * * @return the new selectedRowKeys value */ final public RowKeySet getSelectedRowKeys() { return (RowKeySet)getProperty(SELECTED_ROW_KEYS_KEY); } /** * Sets the selection state for this component. * * @param selectedRowKeys the new selectedRowKeys value */ final public void setSelectedRowKeys(RowKeySet selectedRowKeys) { setProperty(SELECTED_ROW_KEYS_KEY, (selectedRowKeys)); } /** * Gets whether or not data validation - client-side or * server-side - * should take place when * events are generated by this component. * * When immediate is true, the default ActionListener * provided by the JavaServer Faces implementation * should be executed during Apply Request Values phase * of the request processing lifecycle, rather than * waiting until the Invoke Application phase. * * @return the new immediate value */ final public boolean isImmediate() { return ComponentUtils.resolveBoolean(getProperty(IMMEDIATE_KEY), false); } /** * Sets whether or not data validation - client-side or * server-side - * should take place when * events are generated by this component. * * When immediate is true, the default ActionListener * provided by the JavaServer Faces implementation * should be executed during Apply Request Values phase * of the request processing lifecycle, rather than * waiting until the Invoke Application phase. * * @param immediate the new immediate value */ final public void setImmediate(boolean immediate) { setProperty(IMMEDIATE_KEY, immediate ? Boolean.TRUE : Boolean.FALSE); } /** * Gets a method reference to an ExpansionListener * * @return the new rowDisclosureListener value */ final public MethodExpression getRowDisclosureListener() { return (MethodExpression)getProperty(ROW_DISCLOSURE_LISTENER_KEY); } /** * Sets a method reference to an ExpansionListener * * @param rowDisclosureListener the new rowDisclosureListener value */ final public void setRowDisclosureListener(MethodExpression rowDisclosureListener) { setProperty(ROW_DISCLOSURE_LISTENER_KEY, (rowDisclosureListener)); } /** * Gets the set of disclosed rows for this component. * Each entry in the set is a rowKey. * * @return the new disclosedRowKeys value */ final public RowKeySet getDisclosedRowKeys() { return (RowKeySet)getProperty(DISCLOSED_ROW_KEYS_KEY); } /** * Sets the set of disclosed rows for this component. * Each entry in the set is a rowKey. * * @param disclosedRowKeys the new disclosedRowKeys value */ final public void setDisclosedRowKeys(RowKeySet disclosedRowKeys) { setProperty(DISCLOSED_ROW_KEYS_KEY, (disclosedRowKeys)); } /** * Gets a method reference to a selection listener * * @return the new selectionListener value */ final public MethodExpression getSelectionListener() { return (MethodExpression)getProperty(SELECTION_LISTENER_KEY); } /** * Sets a method reference to a selection listener * * @param selectionListener the new selectionListener value */ final public void setSelectionListener(MethodExpression selectionListener) { setProperty(SELECTION_LISTENER_KEY, (selectionListener)); } /** * Gets * Name of the EL variable used to reference the varStatus information. * Once this component has completed rendering, this variable is * removed (or reverted back to its previous value). * The VarStatus provides contextual information about the state of the * component to EL expressions. For components that iterate, varStatus * also provides loop counter information. Please see the this * component's documentation for the specific properties on the varStatus. * The common properties on varStatus include: *
    *
  • "model" - returns the CollectionModel for this component
  • *
  • "index" - returns the zero based row index
  • *
  • "hierarchicalIndex" - returns an array containing the row indices of heirarchy of the currrent row, for e.g. [0,1,2] * Please use this attribute with caution since it requires moving currency to calculate the row index for * each parent collection in the tree hierarchy. *
  • *
  • "hierarchicalLabel" - returns a string label representing the hierarchy of that row, for e.g. 1.1, 1.1.1. * It should be noted that the labels are 1 based vs 0 based for rowIndex. * Please use this attribute with caution since it requires moving currency to calculate the row index for * each parent collection in the tree hierarchy. *
  • *
* * @return the new varStatus value */ final public String getVarStatus() { return ComponentUtils.resolveString(getProperty(VAR_STATUS_KEY)); } /** * Sets * Name of the EL variable used to reference the varStatus information. * Once this component has completed rendering, this variable is * removed (or reverted back to its previous value). * The VarStatus provides contextual information about the state of the * component to EL expressions. For components that iterate, varStatus * also provides loop counter information. Please see the this * component's documentation for the specific properties on the varStatus. * The common properties on varStatus include: *
    *
  • "model" - returns the CollectionModel for this component
  • *
  • "index" - returns the zero based row index
  • *
  • "hierarchicalIndex" - returns an array containing the row indices of heirarchy of the currrent row, for e.g. [0,1,2] * Please use this attribute with caution since it requires moving currency to calculate the row index for * each parent collection in the tree hierarchy. *
  • *
  • "hierarchicalLabel" - returns a string label representing the hierarchy of that row, for e.g. 1.1, 1.1.1. * It should be noted that the labels are 1 based vs 0 based for rowIndex. * Please use this attribute with caution since it requires moving currency to calculate the row index for * each parent collection in the tree hierarchy. *
  • *
* * @param varStatus the new varStatus value */ final public void setVarStatus(String varStatus) { setProperty(VAR_STATUS_KEY, (varStatus)); } /** * Gets the hierarchy of tree data - must be of type * org.apache.myfaces.trinidad.model.TreeModel * * @return the new value value */ final public Object getValue() { return getProperty(VALUE_KEY); } /** * Sets the hierarchy of tree data - must be of type * org.apache.myfaces.trinidad.model.TreeModel * * @param value the new value value */ final public void setValue(Object value) { setProperty(VALUE_KEY, (value)); } /** * Gets the rowKey of the currently focused row. * The rowKeys of the ancestor rows of the focus row are added * to the expandedRowKeys RowKeySet by default. * * @return the new focusRowKey value */ final public Object getFocusRowKey() { return getProperty(FOCUS_ROW_KEY_KEY); } /** * Sets the rowKey of the currently focused row. * The rowKeys of the ancestor rows of the focus row are added * to the expandedRowKeys RowKeySet by default. * * @param focusRowKey the new focusRowKey value */ final public void setFocusRowKey(Object focusRowKey) { setProperty(FOCUS_ROW_KEY_KEY, (focusRowKey)); } /** * Gets a method reference to a focus listener * * @return the new focusListener value */ final public MethodExpression getFocusListener() { return (MethodExpression)getProperty(FOCUS_LISTENER_KEY); } /** * Sets a method reference to a focus listener * * @param focusListener the new focusListener value */ final public void setFocusListener(MethodExpression focusListener) { setProperty(FOCUS_LISTENER_KEY, (focusListener)); } /** * Gets If upon initial rendering, the current subtree under the focused row path * should be expanded. A RowDisclosureEvent is broadcast from the encode begin of the * component so that listeners are properly notified of the disclosure. * * @return the new initiallyExpanded value */ final public boolean isInitiallyExpanded() { return ComponentUtils.resolveBoolean(getProperty(INITIALLY_EXPANDED_KEY), false); } /** * Sets If upon initial rendering, the current subtree under the focused row path * should be expanded. A RowDisclosureEvent is broadcast from the encode begin of the * component so that listeners are properly notified of the disclosure. * * @param initiallyExpanded the new initiallyExpanded value */ final public void setInitiallyExpanded(boolean initiallyExpanded) { setProperty(INITIALLY_EXPANDED_KEY, initiallyExpanded ? Boolean.TRUE : Boolean.FALSE); } /** * Adds a rowDisclosure listener. * * @param listener the rowDisclosure listener to add */ final public void addRowDisclosureListener( RowDisclosureListener listener) { addFacesListener(listener); } /** * Removes a rowDisclosure listener. * * @param listener the rowDisclosure listener to remove */ final public void removeRowDisclosureListener( RowDisclosureListener listener) { removeFacesListener(listener); } /** * Returns an array of attached rowDisclosure listeners. * * @return an array of attached rowDisclosure listeners. */ final public RowDisclosureListener[] getRowDisclosureListeners() { return (RowDisclosureListener[])getFacesListeners(RowDisclosureListener.class); } /** * Adds a selection listener. * * @param listener the selection listener to add */ final public void addSelectionListener( SelectionListener listener) { addFacesListener(listener); } /** * Removes a selection listener. * * @param listener the selection listener to remove */ final public void removeSelectionListener( SelectionListener listener) { removeFacesListener(listener); } /** * Returns an array of attached selection listeners. * * @return an array of attached selection listeners. */ final public SelectionListener[] getSelectionListeners() { return (SelectionListener[])getFacesListeners(SelectionListener.class); } /** * Adds a focus listener. * * @param listener the focus listener to add */ final public void addFocusListener( FocusListener listener) { addFacesListener(listener); } /** * Removes a focus listener. * * @param listener the focus listener to remove */ final public void removeFocusListener( FocusListener listener) { removeFacesListener(listener); } /** * Returns an array of attached focus listeners. * * @return an array of attached focus listeners. */ final public FocusListener[] getFocusListeners() { return (FocusListener[])getFacesListeners(FocusListener.class); } @Override public String getFamily() { return COMPONENT_FAMILY; } @Override protected FacesBean.Type getBeanType() { return TYPE; } /** * Construct an instance of the UIXTree. */ protected UIXTree( String rendererType ) { super(rendererType); } static { TYPE.lockAndRegister("org.apache.myfaces.trinidad.Tree","org.apache.myfaces.trinidad.Tree"); } }




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