%line	%branch
org.apache.jetspeed.layout.impl.NestedFragmentContext$NestedFragmentLevel	0%	0%

1		/*
2		* Licensed to the Apache Software Foundation (ASF) under one or more
3		* contributor license agreements. See the NOTICE file distributed with
4		* this work for additional information regarding copyright ownership.
5		* The ASF licenses this file to You under the Apache License, Version 2.0
6		* (the "License"); you may not use this file except in compliance with
7		* the License. You may obtain a copy of the License at
8		*
9		* http://www.apache.org/licenses/LICENSE-2.0
10		*
11		* Unless required by applicable law or agreed to in writing, software
12		* distributed under the License is distributed on an "AS IS" BASIS,
13		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14		* See the License for the specific language governing permissions and
15		* limitations under the License.
16		*/
17		package org.apache.jetspeed.layout.impl;
18
19		import java.util.List;
20		import java.util.ArrayList;
21
22		import org.apache.commons.logging.Log;
23		import org.apache.commons.logging.LogFactory;
24		import org.apache.jetspeed.components.portletregistry.PortletRegistry;
25		import org.apache.jetspeed.layout.PortletPlacementException;
26		import org.apache.jetspeed.om.page.Fragment;
27		import org.apache.jetspeed.om.page.Page;
28		/**
29		* NestedFragmentContext
30		*
31		* This object captures the nested position of a fragment
32		* within a page. Given a target fragment and a page,
33		* the target fragment col/row within its parent is
34		* recorded, followed by the target fragment's parent
35		* col/row within its parent, etc.
36		*
37		* The purpose of this object is to support the
38		* create-new-page-on-edit feature. For example, when
39		* a fragment is moved, causing the creation of a new
40		* page, the information captured by this object
41		* allows the copy of the fragment in the new page to
42		* be located.
43		*
44		* @author <a>Steve Milek</a>
45		* @author <a href="mailto:smilek@apache.org">Steve Milek</a>
46		* @version $Id: $
47		*/
48		public class NestedFragmentContext
49		{
50		protected static final Log log = LogFactory.getLog( NestedFragmentContext.class );
51		protected static final String eol = System.getProperty( "line.separator" );
52
53		private Fragment targetFragment;
54		private Fragment rootFragment;
55		private Page page;
56		private List fragmentLevels;
57
58		public NestedFragmentContext( Fragment targetFragment, Page page, PortletRegistry registry )
59		throws PortletPlacementException
60		{
61		this.targetFragment = targetFragment;
62		this.page = page;
63		this.rootFragment = page.getRootFragment();
64		init( registry );
65		}
66
67		protected void init( PortletRegistry registry )
68		throws PortletPlacementException
69		{
70		List nestedFragmentLevels = new ArrayList();
71		Fragment nextTarget = targetFragment;
72		Fragment nextParent = null;
73		do
74		{
75		nextParent = NestedFragmentContext.getParentFragmentById( nextTarget.getId(), rootFragment );
76		if ( nextParent != null )
77		{
78		NestedFragmentLevel level = new NestedFragmentLevel( nextTarget, nextParent, registry );
79		nestedFragmentLevels.add( level );
80
81		nextTarget = nextParent;
82		}
83		else
84		{
85		if ( ! nextTarget.getId().equals( rootFragment.getId() ) )
86		{
87		throw new PortletPlacementException( "Cannot determine complete nested structure for fragment " + targetFragment.getId() );
88		}
89		nextTarget = null;
90		}
91		}
92		while ( nextTarget != null );
93		this.fragmentLevels = nestedFragmentLevels;
94		}
95
96		public Fragment getFragmentOnNewPage( Page newPage, PortletRegistry registry )
97		throws PortletPlacementException
98		{
99		Fragment newPageRootFragment = newPage.getRootFragment();
100
101		int depth = fragmentLevels.size();
102
103		Fragment nextFragment = newPageRootFragment;
104		for ( int i = depth -1; i >= 0 ; i-- )
105		{
106		NestedFragmentLevel level = (NestedFragmentLevel)fragmentLevels.get(i);
107		PortletPlacementContextImpl placement = new PortletPlacementContextImpl( class="keyword">newPage, registry, nextFragment );
108		try
109		{
110		nextFragment = placement.getFragmentAtOldCoordinate( new CoordinateImpl( level.getChildCol(), level.getChildRow() ) );
111
112		}
113		catch ( PortletPlacementException ppex )
114		{
115		log.error( "getFragmentOnNewPage failure to locate fragment on new page (index=" + i + ") :" + eol + this.toString() + ( placement != null ? ( eol + placement.dumpFragments(class="keyword">null) ) : "" ) + eol, ppex );
116		throw ppex;
117		}
118		catch ( RuntimeException ex )
119		{
120		log.error( "getFragmentOnNewPage failure to locate fragment on new page (index=" + i + ") :" + eol + this.toString() + ( placement != null ? ( eol + placement.dumpFragments(class="keyword">null) ) : "" ) + eol, ex );
121		throw ex;
122		}
123		if ( nextFragment == null )
124		{
125		throw new PortletPlacementException( "Cannot locate copy of fragment " + targetFragment.getId() + " in the new page structure :" + eol + this.toString() + ( placement != null ? ( eol + placement.dumpFragments(class="keyword">null) ) : "" ));
126		}
127		}
128		return nextFragment;
129		}
130
131		public String toString()
132		{
133		StringBuffer out = new StringBuffer();
134		int depth = fragmentLevels.size();
135		int ldepth = 0;
136		for ( int i = depth -1; i >= 0 ; i-- )
137		{
138		NestedFragmentLevel level = (NestedFragmentLevel)fragmentLevels.get(i);
139		if ( ldepth > 0 )
140		{
141		out.append( eol );
142		for ( int j = 0 ; j < ldepth ; j++ )
143		out.append( " " );
144		}
145		ldepth++;
146		out.append( level.toString() );
147		}
148		return out.toString();
149		}
150
151		class NestedFragmentLevel
152		{
153		private int childRow;
154		private int childCol;
155		private Fragment child;
156		private Fragment parent;
157
158		NestedFragmentLevel( Fragment child, Fragment parent, PortletRegistry registry )
159		throws PortletPlacementException
160	0	{
161	0	this.child = child;
162	0	this.parent = parent;
163	0	PortletPlacementContextImpl placement = new PortletPlacementContextImpl( page, registry, parent );
164	0	this.childRow = placement.getFragmentRow( child );
165	0	this.childCol = placement.getFragmentCol( child );
166	0	}
167
168		protected int getChildRow()
169		{
170	0	return this.childRow;
171		}
172		protected int getChildCol()
173		{
174	0	return this.childCol;
175		}
176		protected Fragment getChild()
177		{
178	0	return this.child;
179		}
180		protected Fragment getParent()
181		{
182	0	return this.parent;
183		}
184		public String toString()
185		{
186	0	return child.getType() + " col=" + childCol + " row=" + childRow + " id=" + child.getId() + " parent-id=" + parent.getId() ;
187		}
188		}
189
190		public static Fragment getParentFragmentById( String id, Fragment parent )
191		{
192		// find fragment by id, tracking fragment parent
193		if ( id == null )
194		{
195		return null;
196		}
197
198		Fragment matchedParent = null;
199		if( parent != null )
200		{
201		// process the children
202		List children = parent.getFragments();
203		for( int i = 0, cSize = children.size() ; i < cSize ; i++)
204		{
205		Fragment childFrag = (Fragment)children.get( i );
206		if ( childFrag != null )
207		{
208		if ( id.equals( childFrag.getId() ) )
209		{
210		matchedParent = parent;
211		break;
212		}
213		else
214		{
215		matchedParent = NestedFragmentContext.getParentFragmentById( id, childFrag );
216		if ( matchedParent != null )
217		{
218		break;
219		}
220		}
221		}
222		}
223		}
224		return matchedParent;
225		}
226		}

This report is generated by jcoverage, Maven and Maven JCoverage Plugin.