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public class Explorateur extends JFrame implements TreeSelectionListener{
//ATTRIBUTS_________________________________________________________________
private File root,currentFile;private TreeModel model;private JTree tree;
private JTextPane textPane;private JButton jbDelete;
private JLabel statut,labelImage;private JPanel panelAffichage;
private JScrollPane jspTree,jspAffichage;
//CONSTRUCTEURS_____________________________________________________________
public Explorateur(String nomRepertoire){
super("Explorateur");
initRoot(nomRepertoire);initTree();
initAutresComposants();initFenetre();
}
//METHODES__________________________________________________________________
//fonctions-----------------------------------------------------------------
public boolean acceptFile(File file){
if(file==null||file.isDirectory()){return false;}
String nom = file.getName();
if(nom.endsWith(".rtf")||nom.endsWith(".htm")||nom.endsWith(".html")
||nom.endsWith(".gif")||nom.endsWith(".jpg")){return true;}
return false;
}
public boolean acceptFile(){return acceptFile(currentFile); }
public boolean isImageFile(){
if(currentFile==null){return false;}
String nom = currentFile.getName();
if(nom.endsWith(".gif")||nom.endsWith(".jpg")){return true;}
return false;
}
public boolean isTextFile(){
if(currentFile==null){return false;}
String nom = currentFile.getName();
if(nom.endsWith(".rtf")||nom.endsWith(".htm")||nom.endsWith(".html")){return true;}
return false;
}
public JWindow getFenetreChargement(){
JWindow w = new JWindow();
JLabel label = new JLabel("Chargement en cours ...");label.setOpaque(true);
label.setForeground(Color.BLUE);label.setBorder(BorderFactory.createLineBorder(Color.BLUE));
w.getContentPane().add(label);w.pack();w.setLocationRelativeTo(null);
return w;
}
//procedures----------------------------------------------------------------
public void delete(){
if(currentFile==null||currentFile.isDirectory()){return;}
int commande = JOptionPane.showConfirmDialog(this
,"Voulez vous vraiment supprimmer "+currentFile.getPath()
,"Confirmez",JOptionPane.YES_NO_OPTION);
switch(commande){
case JOptionPane.YES_OPTION :
currentFile.delete();currentFile = null;
jspAffichage.setViewportView(null);tree.updateUI();
break;
default : return;
}
}
public void chargerTexte(){
try{
if(!acceptFile())return;
if(currentFile.getName().indexOf(".htm")!=-1){textPane.setContentType("text/html");}
else if(currentFile.getName().endsWith(".rtf")){textPane.setContentType("text/rtf");}
textPane.setPage(currentFile.toURL());textPane.setPreferredSize(panelAffichage.getSize());
jspAffichage.setViewportView(textPane);jspAffichage.getViewport().setViewSize(textPane.getPreferredSize());
}
catch(Exception exc){exc.printStackTrace();}
}
public void chargerImage(){
try{
ImageIcon imageIcon = new ImageIcon(currentFile.getPath());
labelImage.setIcon(imageIcon);jspAffichage.setViewportView(labelImage);
jspAffichage.getViewport().setViewSize(labelImage.getPreferredSize());
}catch(Exception exc){exc.printStackTrace();}
}
public void afficherFichierTexte(){
Thread thread = new Thread(){
public void run(){
JWindow w = getFenetreChargement();w.show();
chargerTexte();w.dispose();
}
};
thread.start();
}
public void afficherFichierImage(){
Thread thread = new Thread(){
public void run(){
JWindow w = getFenetreChargement();w.show();
chargerImage();w.dispose();
}
};
thread.start();
}
//procedures TreeSelectionListener------------------------------------------
public void valueChanged(TreeSelectionEvent e){
TreePath path = e.getPath();jspAffichage.setViewportView(null);
if(e==null||path==null){
currentFile=null;
statut.setText("Current file = null");statut.setForeground(Color.RED);
jbDelete.setEnabled(false);return;
}
currentFile = (File)path.getLastPathComponent();
statut.setText("Current file = "+currentFile.getPath());
if(acceptFile()){
jbDelete.setEnabled(true); statut.setForeground(Color.BLUE);
if(isImageFile()){afficherFichierImage();}else if(isTextFile()){afficherFichierTexte();}
}else{
jbDelete.setEnabled(false); statut.setForeground(Color.RED);
}
}
//procedures d'initialisation-----------------------------------------------
public void initRoot(String nomRepertoire){
System.out.println("INIT ROOT");
if(nomRepertoire==null){System.out.println("Erreur : nom repertoire null");System.exit(0); }
root = new File(nomRepertoire);
if(!root.exists()){System.out.println("Erreur : "+nomRepertoire+" n'existe pas");System.exit(0); }
if(!root.isDirectory()){System.out.println("Erreur : "+nomRepertoire+" n'est pas un dossier");System.exit(0); }
currentFile = null;
}
public void initTree(){
System.out.println("INIT TREE");
System.out.println("->init modele");
model = new TreeModel(){
//methodes sur mesure
public java.util.List getFichiers(Object parent){
File fileParent = (File)parent;
File[] fichiers = fileParent.listFiles(new FileFilter(){
public boolean accept(File file){return acceptFile(file)||file.isDirectory();}
});
Arrays.sort(fichiers,new Comparator(){
public int compare(Object o1,Object o2){
File f1 = (File)o1;File f2 = (File)o2;
boolean dirf1 = f1.isDirectory();boolean dirf2 = f2.isDirectory();
if(dirf1&&!dirf2){return -1;}if(!dirf1&&dirf2){return 1;}
return f1.getPath().compareTo(f2.getPath());
}
});
return Arrays.asList(fichiers);
}
//surcharge de certaines methodes
public Object getRoot(){return root;}
public Object getChild(Object parent, int index){return getFichiers(parent).get(index);}
public int getChildCount(Object parent){return getFichiers(parent).size();}
public int getIndexOfChild(Object parent, Object child){return getFichiers(parent).indexOf(child);}
public boolean isLeaf(Object node){
File f = (File)node;if(!f.isDirectory()){return true;}
return false;
}
public void valueForPathChanged(TreePath path, Object newValue){}
public void addTreeModelListener(TreeModelListener l){}
public void removeTreeModelListener(TreeModelListener l){}
};
System.out.println("->init tree");
tree = new JTree(model);tree.setEditable(false);
tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
tree.addTreeSelectionListener(this);tree.putClientProperty("JTree.lineStyle","Angled");
System.out.println("->init renderer");
tree.setCellRenderer(new DefaultTreeCellRenderer(){
public Component getTreeCellRendererComponent(JTree tree,Object value
,boolean selected,boolean expanded
,boolean leaf,int row,boolean hasFocus){
JLabel label = (JLabel)super.getTreeCellRendererComponent(tree,value,selected,expanded,leaf,row,hasFocus);
File fichier = (File)value;label.setText(fichier.getName());
if(fichier.isDirectory()){label.setForeground(Color.BLACK);}
else if(acceptFile(fichier)){label.setForeground(Color.BLUE);}
else{label.setForeground(Color.RED);}
return label;
}
});
tree.addTreeExpansionListener(new TreeExpansionListener(){
public void treeCollapsed(TreeExpansionEvent event){jspTree.getViewport().setViewSize(tree.getPreferredScrollableViewportSize());}
public void treeExpanded(TreeExpansionEvent event){jspTree.getViewport().setViewSize(tree.getPreferredScrollableViewportSize());}
});
}
public void initAutresComposants(){
System.out.println("INIT AUTRES COMPOSANTS GRAPHIQUES");
System.out.println("->init pane");
textPane = new JTextPane();textPane.setEditable(false);
System.out.println("->init label image");labelImage = new JLabel();
System.out.println("->init bouton");
jbDelete = new JButton("Supprimmer");jbDelete.setEnabled(false);
jbDelete.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent ae){delete();} });
System.out.println("->init barre de statut");
statut = new JLabel("Current file = null");statut.setOpaque(true);
statut.setForeground(Color.RED);statut.setBorder(BorderFactory.createLineBorder(Color.BLUE));
}
public void initFenetre(){
System.out.println("INIT FENETRE");
System.out.println("->init panneaux intermediaires");
panelAffichage = new JPanel();
panelAffichage.setPreferredSize(new Dimension(500,500));
JPanel panelOuest = new JPanel(new BorderLayout());
panelOuest.setPreferredSize(new Dimension(300,500));
System.out.println("->init jsp");
jspTree = new JScrollPane(tree);jspAffichage = new JScrollPane();
jspAffichage.setPreferredSize(panelAffichage.getPreferredSize());
jspAffichage.setBorder(BorderFactory.createTitledBorder("Zone d'affichage"));
System.out.println("->placement des composants");
panelOuest.add(jspTree,BorderLayout.CENTER);panelOuest.add(jbDelete,BorderLayout.SOUTH);
panelAffichage.add(jspAffichage);
getContentPane().add(panelAffichage,BorderLayout.CENTER);
getContentPane().add(panelOuest,BorderLayout.WEST);
getContentPane().add(statut,BorderLayout.SOUTH);
System.out.println("->finitions");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);pack();setLocationRelativeTo(null);setVisible(true);
}
//MAIN______________________________________________________________________
public static void main(String[] args){new Explorateur("c:\\ioan");}
} |
