/**
* Creates a new RecentFileManager object
*
* @param recentFileHandler the recent file handler object reference
* @param jMenu the menu component object reference onto which the recent files JMenuItems are to
* be added
* @param configFileName the recent files config save file name. the file will be created in the
* same folder as that of the project
* @param maxRecords the maximum no of recent files to be stored
* @param fileIconTypes the file icon type array. specifies what icon to be displayed for
* different files. the file type is recognized by their extension.
*/
public RecentFilesManager(
RecentFileHandler recentFileHandler,
JMenu jMenu,
String configFileName,
int maxRecords,
FileIconTypes[] fileIconTypes)
throws FileNotFoundException, IOException {
// set the recent file handler object
this.recentFileHandler = recentFileHandler;
// set the jmenu reference
this.jmenu = jMenu;
// create the config file from the config file name
this.configFile = new File(configFileName);
// if file doesnt exists the ncreate one
if (!configFile.exists()) {
this.configFile.createNewFile();
}
// set the maximun no of records
this.maxRecords = maxRecords;
// set the file icon types reference
this.fileIconTypesArray = fileIconTypes;
// create a new recent files list
recentFilesList = new ArrayList<>();
// create a properties object
this.properties = new Properties();
// load the properties from the config file
this.properties.load(new FileInputStream(configFile));
// the recent file name string
String fileName;
// the recent file attribute string
String attribute;
// the recent file attribute list
ArrayList<String> attributeList;
// for the maximun no of recent records
for (int i = 0; i < maxRecords; i++) {
// the value for key 'x0' gives the file name
fileName = properties.getProperty(String.valueOf(i) + 0);
// if file name is not equal to null then
if (fileName != null) {
// create a new recent file object
RecentFile recentFile = new RecentFile();
// create a file object based on the recent file name
// and set it to the recent file object
recentFile.setFile(new File(fileName));
// create the attribute list
attributeList = new ArrayList<String>();
// the value of j starts with 1 as the value 0 is already used for the file name
// we dont know how many attributes are present so we will try to search for
// all the possibilities till the integer max value
for (int j = 1; j < Integer.MAX_VALUE; j++) {
// get the attribute
attribute = properties.getProperty(String.valueOf(i) + String.valueOf(j));
// if the returned attribute is not null then
if (attribute != null) {
// add the attribute to the attribute list
attributeList.add(attribute);
} else {
// else if the attribute is null then it means
// the attribute for the file specified by the value 'i' is over
// so then break the search for the attribute for the file
break;
}
}
// if the attribute size is greater than zero then
if (attributeList.size() > 0) {
// convert the attributes list into attributes array
String[] attributesArray = (String[]) attributeList.toArray(new String[0]);
// set the attributes array to the recent file
recentFile.setAttributes(attributesArray);
} else {
// set the attribute array as null
recentFile.setAttributes(null);
}
// add the recent file to the recent files list
recentFilesList.add(recentFile);
}
}
// load the jmenu with the recent files JMenuItems
loadRecentFilesMenuItems();
}
