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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
AbstractTableDataModel.java | 0% | 0% | 0% | 0% |
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// Copyright 2004, 2005 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package org.apache.tapestry.contrib.table.model.common;
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import java.lang.ref.WeakReference;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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import org.apache.tapestry.contrib.table.model.CTableDataModelEvent;
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import org.apache.tapestry.contrib.table.model.ITableDataModel;
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import org.apache.tapestry.contrib.table.model.ITableDataModelListener;
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/**
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* An implementation of the listener support in the ITableDataModel interface
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*
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* @author mindbridge
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*/
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public abstract class AbstractTableDataModel implements ITableDataModel |
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{ |
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private List m_arrListeners;
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public AbstractTableDataModel()
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{ |
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m_arrListeners = new ArrayList();
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} |
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/**
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* Method fireTableDataModelEvent.
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* Fires a change event to all listeners
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* @param objEvent the event to pass to the listeners
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*/
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protected void fireTableDataModelEvent(CTableDataModelEvent objEvent) |
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{ |
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synchronized (m_arrListeners) {
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List arrEmptyReferences = null;
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for (Iterator it = m_arrListeners.iterator(); it.hasNext();)
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{ |
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WeakReference objRef = (WeakReference) it.next(); |
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ITableDataModelListener objListener = |
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(ITableDataModelListener) objRef.get(); |
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if (objListener != null) |
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objListener.tableDataChanged(objEvent); |
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else {
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if (arrEmptyReferences == null) |
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arrEmptyReferences = new ArrayList();
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arrEmptyReferences.add(objRef); |
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} |
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} |
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if (arrEmptyReferences != null) |
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m_arrListeners.removeAll(arrEmptyReferences); |
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} |
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} |
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/**
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* @see org.apache.tapestry.contrib.table.model.ITableDataModel#addTableDataModelListener(ITableDataModelListener)
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*/
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public void addTableDataModelListener(ITableDataModelListener objListener) |
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{ |
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synchronized (m_arrListeners) {
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m_arrListeners.add(new WeakReference(objListener));
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} |
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} |
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/**
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* @see org.apache.tapestry.contrib.table.model.ITableDataModel#removeTableDataModelListener(ITableDataModelListener)
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*/
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public void removeTableDataModelListener(ITableDataModelListener objListener) |
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{ |
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synchronized (m_arrListeners) {
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List arrEmptyReferences = null;
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for (Iterator it = m_arrListeners.iterator(); it.hasNext();)
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{ |
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WeakReference objRef = (WeakReference) it.next(); |
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ITableDataModelListener objStoredListener = |
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(ITableDataModelListener) objRef.get(); |
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if (objListener == objStoredListener || objStoredListener == null) { |
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if (arrEmptyReferences == null) |
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arrEmptyReferences = new ArrayList();
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arrEmptyReferences.add(objRef); |
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} |
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} |
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if (arrEmptyReferences != null) |
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m_arrListeners.removeAll(arrEmptyReferences); |
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} |
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} |
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} |
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