// Copyright 2004, 2005 The Apache Software Foundation
//
// Licensed 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.tapestry.contrib.tree.components;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.tapestry.BaseComponent;
import org.apache.tapestry.IBinding;
import org.apache.tapestry.IMarkupWriter;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.Tapestry;
import org.apache.tapestry.contrib.tree.model.ISessionStoreManager;
import org.apache.tapestry.contrib.tree.model.ITreeModel;
import org.apache.tapestry.contrib.tree.model.ITreeModelSource;
import org.apache.tapestry.contrib.tree.model.ITreeSessionStateManager;
import org.apache.tapestry.contrib.tree.model.ITreeStateListener;
import org.apache.tapestry.contrib.tree.simple.FullTreeSessionStateManager;
import org.apache.tapestry.event.PageBeginRenderListener;
import org.apache.tapestry.event.PageDetachListener;
import org.apache.tapestry.event.PageEvent;
import org.apache.tapestry.util.ComponentAddress;
/**
*/
public abstract class TreeView extends BaseComponent implements
PageDetachListener, PageBeginRenderListener, ITreeModelSource
{
private static final Log LOG = LogFactory.getLog(TreeView.class);
private IBinding m_objSessionStoreManagerBinding;
private IBinding m_objTreeModelBinding;
private IBinding m_objSessionStateManagerBinding;
private ITreeModel m_objTreeModel;
private ITreeSessionStateManager m_objTreeSessionStateManager;
private ISessionStoreManager m_objSessionStoreManager;
private Object m_objTreeSessionState;
private ComponentAddress m_objComponentAddress;
public TreeView()
{
super();
initialize();
}
private void initialize()
{
m_objTreeModel = null;
m_objTreeSessionStateManager = null;
m_objSessionStoreManager = null;
m_objTreeSessionState = null;
m_objComponentAddress = null;
}
/**
* @see org.apache.tapestry.AbstractComponent#renderComponent(IMarkupWriter,
* IRequestCycle)
*/
/**
* @see org.apache.tapestry.event.PageDetachListener#pageDetached(PageEvent)
*/
public void pageDetached(PageEvent arg0)
{
initialize();
}
/**
* @see org.apache.tapestry.event.PageRenderListener#pageBeginRender(PageEvent)
*/
public void pageBeginRender(PageEvent arg0)
{
if (arg0.getRequestCycle().isRewinding()) { return; }
storeSesion();
}
/**
* Returns the treeModelBinding.
*
* @return IBinding
*/
public IBinding getTreeModelBinding()
{
return m_objTreeModelBinding;
}
/**
* Sets the treeModelBinding.
*
* @param treeModelBinding
* The treeModelBinding to set
*/
public void setTreeModelBinding(IBinding treeModelBinding)
{
m_objTreeModelBinding = treeModelBinding;
}
/**
* Returns the SessionStoreManagerBinding.
*
* @return IBinding
*/
public IBinding getSessionStoreManagerBinding()
{
return m_objSessionStoreManagerBinding;
}
/**
* Returns the sessionStateManagerBinding.
*
* @return IBinding
*/
public IBinding getSessionStateManagerBinding()
{
return m_objSessionStateManagerBinding;
}
/**
* Sets the SessionStoreManagerBinding.
*
* @param sessionStoreManagerBinding
* The SessionStoreManagerBinding to set
*/
public void setSessionStoreManagerBinding(
IBinding sessionStoreManagerBinding)
{
m_objSessionStoreManagerBinding = sessionStoreManagerBinding;
}
/**
* Sets the sessionStateManagerBinding.
*
* @param sessionStateManagerBinding
* The sessionStateManagerBinding to set
*/
public void setSessionStateManagerBinding(
IBinding sessionStateManagerBinding)
{
m_objSessionStateManagerBinding = sessionStateManagerBinding;
}
private void extractTreeModel()
{
if (LOG.isDebugEnabled())
{
LOG.debug("TreeView.extractTreeModel()");
}
ISessionStoreManager objHolder = getSessionStoreManager();
ITreeSessionStateManager objSessionManager = getTreeSessionStateMgr();
Object objSessionState;
if (objHolder == null)
{
objSessionState = getTreeSessionState();
}
else
{
objSessionState = objHolder.getSessionState(this.getPage(),
"treeSessionState");
}
if (objSessionState != null)
{
m_objTreeModel = objSessionManager.getModel(objSessionState);
}
else
{
if (LOG.isDebugEnabled())
{
LOG.debug("TreeView.extractTreeModel() from BINDING");
}
m_objTreeModel = (ITreeModel) getTreeModelBinding().getObject();
}
}
private void storeSesion()
{
if (LOG.isDebugEnabled())
{
LOG.debug("TreeView.storeSesion()");
}
ITreeSessionStateManager objSessionManager = getTreeSessionStateMgr();
Object objSessionState = objSessionManager
.getSessionState(getTreeModel());
store(objSessionState);
}
private void store(Object objSessionState)
{
ISessionStoreManager objHolder = getSessionStoreManager();
if (objHolder == null)
{
Tapestry.fireObservedChange(this, "treeSessionState",
objSessionState);
}
else
{
// String strPath = "treeSessionState";
String strPath = getExtendedId();
if (LOG.isDebugEnabled())
LOG.debug("store(): setting state with: " + strPath);
objHolder.setSessionState(this.getPage(), strPath, objSessionState);
}
}
/**
* @see ITreeComponent#resetState()
*/
public void resetState()
{
if (LOG.isDebugEnabled())
{
LOG.debug("TreeView.resetState()");
}
initialize();
store(null);
}
/**
* Returns the SessionStoreManager.
*
* @return ISessionStoreManager
*/
public ISessionStoreManager getSessionStoreManager()
{
if (m_objSessionStoreManager == null
&& getSessionStoreManagerBinding() != null)
{
m_objSessionStoreManager = (ISessionStoreManager) getSessionStoreManagerBinding()
.getObject();
}
return m_objSessionStoreManager;
}
/**
* Returns the wizardSessionStateMgr.
*
* @return IWizardSessionStateManager
*/
public ITreeSessionStateManager getTreeSessionStateMgr()
{
if (m_objTreeSessionStateManager == null)
{
IBinding objBinding = getSessionStateManagerBinding();
if (objBinding != null)
{
Object objManager = objBinding.getObject();
m_objTreeSessionStateManager = (ITreeSessionStateManager) objManager;
}
else
{
m_objTreeSessionStateManager = new FullTreeSessionStateManager();
}
}
return m_objTreeSessionStateManager;
}
public ComponentAddress getComponentPath()
{
if (m_objComponentAddress == null)
{
m_objComponentAddress = new ComponentAddress(this);
}
return m_objComponentAddress;
}
/**
* Returns the treeModel.
*
* @return ITreeModel
*/
public ITreeModel getTreeModel()
{
if (m_objTreeModel == null)
{
extractTreeModel();
}
return m_objTreeModel;
}
/**
* Sets the treeModel.
*
* @param treeModel
* The treeModel to set
*/
public void setTreeModel(ITreeModel treeModel)
{
m_objTreeModel = treeModel;
}
/**
* Returns the treeSessionState.
*
* @return Object
*/
public Object getTreeSessionState()
{
return m_objTreeSessionState;
}
/**
* Sets the treeSessionState.
*
* @param treeSessionState
* The treeSessionState to set
*/
public void setTreeSessionState(Object treeSessionState)
{
m_objTreeSessionState = treeSessionState;
}
public String getSelectedNodeStyleID()
{
return getId() + ":selected";
}
/**
* @see org.apache.tapestry.BaseComponent#renderComponent(org.apache.tapestry.IMarkupWriter,
* org.apache.tapestry.IRequestCycle)
*/
protected void renderComponent(IMarkupWriter arg0, IRequestCycle arg1)
{
Object objExistedTreeModelSource = arg1
.getAttribute(ITreeModelSource.TREE_MODEL_SOURCE_ATTRIBUTE);
arg1.setAttribute(ITreeModelSource.TREE_MODEL_SOURCE_ATTRIBUTE, this);
super.renderComponent(arg0, arg1);
arg1.setAttribute(ITreeModelSource.TREE_MODEL_SOURCE_ATTRIBUTE,
objExistedTreeModelSource);
}
/**
* @see org.apache.tapestry.contrib.tree.model.ITreeModelSource#getTreeStateListener()
*/
public ITreeStateListener getTreeStateListener()
{
ITreeStateListener objListener = null;
IBinding objBinding = getBinding("treeStateListener");
if (objBinding != null)
{
objListener = (ITreeStateListener) objBinding.getObject();
}
return objListener;
}
}