Coverage Report - palmed.file.FileBrowser

Classes in this Package	Line Coverage	Branch Coverage	Complexity
FileBrowser	0%	0%	1.8;1,8

1		/**
2		* Redistribution and use in source and binary forms, with or without
3		* modification, are permitted provided that the following conditions are
4		* met :
5		*
6		* . Redistributions of source code must retain the above copyright
7		* notice, this list of conditions and the following disclaimer.
8		*
9		* . Redistributions in binary form must reproduce the above copyright
10		* notice, this list of conditions and the following disclaimer in the
11		* documentation and/or other materials provided with the distribution.
12		*
13		* . The name of the author may not be used to endorse or promote products
14		* derived from this software without specific prior written permission.
15		*
16		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17		* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18		* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19		* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20		* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21		* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22		* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24		* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25		* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26		* POSSIBILITY OF SUCH DAMAGE.
27		*
28		* $Id: FileBrowser.java 359 2005-12-23 14:26:53Z mat007 $
29		*/
30
31		package palmed.file;
32
33		import javax.microedition.io.file.FileSystemListener;
34		import javax.microedition.io.file.FileSystemRegistry;
35		import javax.microedition.lcdui.Alert;
36		import javax.microedition.lcdui.AlertType;
37		import javax.microedition.lcdui.Command;
38		import javax.microedition.lcdui.CommandListener;
39		import javax.microedition.lcdui.Display;
40		import javax.microedition.lcdui.Displayable;
41		import javax.microedition.lcdui.List;
42		import palmed.ui.IInputListener;
43		import palmed.ui.InputDialog;
44
45		/**
46		* This class implements a file browser.
47		*
48		* @author Mathieu Champlon
49		* @version $Revision: 359 $ $Date: 2005-12-23 23:26:53 +0900 (ven., 23 déc. 2005) $
50		*/
51	0	public final class FileBrowser extends List implements CommandListener, FileSystemListener
52		{
53		/**
54		* The display.
55		*/
56		private final Display display_;
57		/**
58		* The displayable to show when closing the browser.
59		*/
60		private final Displayable next_;
61		/**
62		* The file list select command.
63		*/
64	0	private final Command selectCommand_ = new Command( "select", Command.OK, 1 );
65		/**
66		* The cancel command.
67		*/
68	0	private final Command cancelCommand_ = new Command( "cancel", Command.OK, 1 );
69		/**
70		* The create file command.
71		*/
72	0	private final Command createFileCommand_ = new Command( "new file", Command.SCREEN, 1 );
73		/**
74		* The create directory command.
75		*/
76	0	private final Command createDirectoryCommand_ = new Command( "new directory", Command.SCREEN, 2 );
77		/**
78		* The file browser listener.
79		*/
80		private IFileBrowserListener listener_;
81		/**
82		* Current directory.
83		*/
84		private IDirectory current_;
85		/**
86		* Whether file creation should be enabled.
87		*/
88		private boolean isFileCreationAllowed_;
89		/**
90		* The directory visitor.
91		*/
92		private final DirectoryVisitor visitor_;
93
94		/**
95		* Create a file browser.
96		*
97		* @param display the display
98		* @param next the displayable to display when closing the file browser
99		*/
100		public FileBrowser( final Display display, final Displayable next )
101		{
102	0	super( null, List.IMPLICIT );
103	0	if( display == null )
104	0	throw new IllegalArgumentException( "parameter 'display' is null" );
105	0	if( next == null )
106	0	throw new IllegalArgumentException( "parameter 'next' is null" );
107	0	display_ = display;
108	0	next_ = next;
109	0	current_ = new Root();
110	0	visitor_ = new DirectoryVisitor();
111	0	setCommandListener( this );
112	0	setSelectCommand( selectCommand_ );
113	0	addCommand( cancelCommand_ );
114	0	FileSystemRegistry.addFileSystemListener( this );
115	0	show();
116	0	}
117
118		private void show()
119		{
120	0	deleteAll();
121		try
122		{
123	0	visitor_.fill( this, current_ );
124		}
125	0	catch( Exception e )
126		{
127	0	error( e.getMessage() );
128	0	}
129	0	}
130
131		/**
132		* Add or remove the possibility to create a new file and select it.
133		*
134		* @param canCreateFiles whether file creation is allowed or not
135		*/
136		public void allowCreation( final boolean canCreateFiles )
137		{
138	0	isFileCreationAllowed_ = canCreateFiles;
139	0	checkFileCreation();
140	0	}
141
142		private void checkFileCreation()
143		{
144	0	if( isFileCreationAllowed_ && current_.isWritable() )
145		{
146	0	addCommand( createFileCommand_ );
147	0	addCommand( createDirectoryCommand_ );
148	0	}
149		else
150		{
151	0	removeCommand( createFileCommand_ );
152	0	removeCommand( createDirectoryCommand_ );
153		}
154	0	}
155
156		/**
157		* Set or change the file browser listener.
158		*
159		* @param listener the file browser listener
160		*/
161		public void setListener( final IFileBrowserListener listener )
162		{
163	0	listener_ = listener;
164	0	}
165
166		/**
167		* {@inheritDoc}
168		*/
169		public void commandAction( final Command command, final Displayable displayable )
170		{
171	0	if( command == selectCommand_ )
172	0	select( getString( getSelectedIndex() ) );
173	0	else if( command == cancelCommand_ )
174	0	display_.setCurrent( next_ );
175	0	else if( command == createFileCommand_ )
176	0	createFile( this );
177	0	else if( command == createDirectoryCommand_ )
178	0	createDirectory( this );
179	0	}
180
181		private void select( final String filename )
182		{
183	0	current_ = current_.select( filename, listener_ );
184	0	checkFileCreation();
185	0	show();
186	0	}
187
188		private void createFile( final Displayable next )
189		{
190	0	final IInputListener listener = new IInputListener()
191		{
192		public void enter( final String value )
193		{
194	0	select( value );
195	0	}
196
197	0	public void cancel()
198		{
199	0	display_.setCurrent( next );
200	0	}
201		};
202	0	display_.setCurrent( new InputDialog( "Save in a new file", "Enter file name", listener ) );
203	0	}
204
205		private void createDirectory( final Displayable next )
206		{
207	0	final IInputListener listener = new IInputListener()
208		{
209		public void enter( final String value )
210		{
211		try
212		{
213	0	current_.create( value );
214		}
215	0	catch( Exception e )
216		{
217	0	error( e.getMessage() );
218	0	}
219	0	display_.setCurrent( next );
220	0	show();
221	0	}
222
223	0	public void cancel()
224		{
225	0	display_.setCurrent( next );
226	0	}
227		};
228	0	display_.setCurrent( new InputDialog( "Create a directory", "Enter directory name", listener ) );
229	0	}
230
231		/**
232		* {@inheritDoc}
233		*/
234		public void rootChanged( final int state, final String rootName )
235		{
236	0	if( state == FileSystemListener.ROOT_ADDED || current_.isInPath( rootName ) )
237	0	current_ = new Root();
238	0	show();
239	0	}
240
241		private void error( final String message )
242		{
243	0	display_.setCurrent( new Alert( "Error", message, null, AlertType.ERROR ), next_ );
244	0	}
245		}