Hello,
I implemented a file selector. Perhaps it may help the one or the other. Included are:
- layout guis without xml
- using the ControlBuilder
- Programming your own control
Have fun
Michael
The main program:
[java]import java.io.File;
import com.jme3.app.SimpleApplication;
import com.jme3.niftygui.NiftyJmeDisplay;
import de.lessvoid.nifty.Nifty;
import de.lessvoid.nifty.builder.ControlBuilder;
import de.lessvoid.nifty.builder.ControlDefinitionBuilder;
import de.lessvoid.nifty.builder.LayerBuilder;
import de.lessvoid.nifty.builder.PanelBuilder;
import de.lessvoid.nifty.builder.ScreenBuilder;
import de.lessvoid.nifty.controls.button.builder.ButtonBuilder;
import de.lessvoid.nifty.controls.dropdown.builder.DropDownBuilder;
import de.lessvoid.nifty.controls.listbox.builder.ListBoxBuilder;
import de.lessvoid.nifty.controls.textfield.builder.TextFieldBuilder;
import de.lessvoid.nifty.screen.Screen;
public class FileSelector extends SimpleApplication implements FileSelectorObserver {
private Nifty nifty;
private Screen screen;
public static void main(String[] args){
FileSelector app = new FileSelector();
app.setPauseOnLostFocus(false);
app.start();
}
public void simpleInitApp() {
NiftyJmeDisplay niftyDisplay = new NiftyJmeDisplay(assetManager,
inputManager,
audioRenderer,
guiViewPort);
nifty = niftyDisplay.getNifty();
nifty.loadStyleFile("nifty-default-styles.xml");
nifty.loadControlFile("nifty-default-controls.xml");
guiViewPort.addProcessor(niftyDisplay);
registerControl();
screen = new ScreenBuilder("start") {{
layer(new LayerBuilder("baseLayer") {{
childLayoutCenter();
control(new ControlBuilder("fileSelector","FileSelectionControl") {{
set("textButtonCancel", "CANCEL");
set("textButtonOpen", "OPEN");
set("filterText", "Text Files (*.txt)");
set("filterEnding", ".txt");
}});
}});
}}.build(nifty);
nifty.gotoScreen("start");
screen.findControl("fileSelector", FileSelectionController.class).setDirectory(new File("./"));
screen.findControl("fileSelector", FileSelectionController.class).setFileSelectorObserver(this);
flyCam.setEnabled(false);
inputManager.setCursorVisible(true);
}
private void registerControl() {
new ControlDefinitionBuilder("FileSelectionControl") {{
controller("FileSelectionController");
panel(new PanelBuilder() {{
childLayoutVertical();
focusable(false);
width("600px");
panel(new PanelBuilder() {{
childLayoutVertical();
focusable(false);
panel(new PanelBuilder() {{
height("30px");
childLayoutHorizontal();
control(new DropDownBuilder("#rootDropBox") {{
width("140px");
height("22px");
marginLeft("10px");
marginRight("10px");
set("vertical","on");
set("#panel#listbox#horizontal","off");
set("displayItems","3");
font("aurulent-sans-16.fnt");
focusable(false);
}});
control(new TextFieldBuilder("#directory") {{
alignLeft();
textHAlignRight();
focusable(true);
font("aurulent-sans-16.fnt");
width("430px");
}});
}});
panel(new PanelBuilder() {{
width("100%");
childLayoutCenter();
control(new ListBoxBuilder("#listFiles") {{
width("580px");
set("vertical","on");
set("horizontal","off");
marginLeft("10px");
marginRight("10px");
backgroundColor("#0000");
set("displayItems","12");
font("aurulent-sans-16.fnt");
focusable(false);
}});
}});
panel(new PanelBuilder() {{
height("6px");
}});
panel(new PanelBuilder() {{
width("100%");
height("25px");
childLayoutHorizontal();
control(new DropDownBuilder("#fileTypeDropBox") {{
width("430px");
height("22px");
marginLeft("10px");
marginRight("10px");
set("vertical","on");
set("horizontal","off");
set("displayItems","2");
font("aurulent-sans-16.fnt");
focusable(false);
}});
control(new ButtonBuilder("#buttonCancel","$textButtonCancel") {{
width("140px");
height("22px");
}});
}});
panel(new PanelBuilder() {{
width("100%");
height("25px");
childLayoutHorizontal();
control(new TextFieldBuilder("#filename") {{
alignLeft();
textHAlignLeft();
font("aurulent-sans-16.fnt");
width("430px");
height("22px");
marginLeft("10px");
marginRight("10px");
focusable(true);
}});
control(new ButtonBuilder("#buttonOpen","$textButtonOpen") {{
width("140px");
height("22px");
}});
}});
}});
}});
}}.registerControlDefintion(nifty);
}
@Override
public void selected(boolean ok, File directory, File file) {
System.out.println("Selected: ");
System.out.println("ok: " + ok);
System.out.println("directory: " + directory);
System.out.println("file: " + file);
screen.findElementByName("baseLayer").hide();
}
}
[/java]
The Controller:
[java]
import java.io.File;
import java.io.FileFilter;
import java.util.Properties;
import org.bushe.swing.event.EventTopicSubscriber;
import de.lessvoid.nifty.Nifty;
import de.lessvoid.nifty.controls.Button;
import de.lessvoid.nifty.controls.ButtonClickedEvent;
import de.lessvoid.nifty.controls.Controller;
import de.lessvoid.nifty.controls.DropDown;
import de.lessvoid.nifty.controls.DropDownSelectionChangedEvent;
import de.lessvoid.nifty.controls.ListBox;
import de.lessvoid.nifty.controls.ListBoxSelectionChangedEvent;
import de.lessvoid.nifty.controls.TextField;
import de.lessvoid.nifty.controls.WindowClosedEvent;
import de.lessvoid.nifty.elements.Element;
import de.lessvoid.nifty.input.NiftyInputEvent;
import de.lessvoid.nifty.screen.Screen;
import de.lessvoid.xml.xpp3.Attributes;
public class FileSelectionController implements Controller {
Nifty nifty;
Screen niftyScreen;
String id;
File currentDirectory;
File[] directories;
File[] roots;
String filterText;
String filterEnding;
FileSelectorObserver fileSelectorObserver;
ListBoxSelectionChangedEvent lastListEvent = null;
EventTopicSubscriber<ListBoxSelectionChangedEvent> eventHandlerListBox;
EventTopicSubscriber<ButtonClickedEvent> eventHandlerButton;
EventTopicSubscriber<DropDownSelectionChangedEvent> eventHandlerRoot;
EventTopicSubscriber<WindowClosedEvent> eventHandlerClosed;
EventTopicSubscriber<NiftyInputEvent> eventHandlerDirectory;
boolean isClosing = false;
@Override
public void bind(Nifty nifty, Screen niftyScreen, Element arg2, Properties arg3,
Attributes arg4) {
this.nifty = nifty;
this.niftyScreen = niftyScreen;
}
@Override
public void init(Properties arg0, Attributes arg1) {
id = arg0.getProperty("id");
filterText = arg0.getProperty("filterText");
filterEnding = arg0.getProperty("filterEnding");
roots = File.listRoots();
DropDown<String> dropDown = nifty.getCurrentScreen().findNiftyControl(id+"#rootDropBox", DropDown.class);
if (dropDown != null) {
dropDown.removeAllItems(dropDown.getItems());
if (dropDown.getItems().size()==0) {
for (int i=0; i < roots.length; i++){
dropDown.addItem(roots[i].getAbsolutePath());
}
}
dropDown.getElement().layoutElements();
}
dropDown = nifty.getCurrentScreen().findNiftyControl(id+"#fileTypeDropBox", DropDown.class);
if (dropDown != null) {
dropDown.removeAllItems(dropDown.getItems());
dropDown.addItem(filterText);
dropDown.addItem("all files (*.*)");
dropDown.getElement().layoutElements();
}
if (eventHandlerListBox == null) {
eventHandlerListBox = new EventTopicSubscriber<ListBoxSelectionChangedEvent>() {
@Override
public void onEvent(String arg0,
ListBoxSelectionChangedEvent arg1) {
if (arg1.getSelectionIndices().size() > 0)
if (!arg1.equals(lastListEvent)) {
lastListEvent = arg1;
int index = (Integer)arg1.getSelectionIndices().get(0);
if (currentDirectory.getParentFile() != null) {
if (index == 0)
newDirectory(currentDirectory.getParentFile());
else {
if (directories[index-1].isDirectory())
newDirectory(directories[index-1]);
else
newFile(directories[index-1]);
}
}
else {
if (directories[index].isDirectory())
newDirectory(directories[index]);
else
newFile(directories[index]);
}
}
}
};
nifty.subscribe(niftyScreen, id + "#listFiles", ListBoxSelectionChangedEvent.class, eventHandlerListBox);
}
if (eventHandlerRoot == null) {
eventHandlerRoot = new EventTopicSubscriber<DropDownSelectionChangedEvent>() {
public void onEvent(String arg0, DropDownSelectionChangedEvent arg1) {
if (arg0.equalsIgnoreCase(id + "#fileTypeDropBox"))
newDirectory(currentDirectory);
else
newDirectory(roots[arg1.getSelectionItemIndex()]);
}
};
nifty.subscribe(niftyScreen, id + "#fileTypeDropBox", DropDownSelectionChangedEvent.class, eventHandlerRoot);
nifty.subscribe(niftyScreen, id + "#rootDropBox", DropDownSelectionChangedEvent.class, eventHandlerRoot);
}
if (eventHandlerButton == null) {
eventHandlerButton = new EventTopicSubscriber<ButtonClickedEvent>() {
@Override
public void onEvent(String arg0, ButtonClickedEvent arg1) {
if (arg0.endsWith("Open"))
open();
if (arg0.endsWith("Cancel"))
cancel();
}
};
nifty.subscribe(niftyScreen, id + "#buttonCancel", ButtonClickedEvent.class, eventHandlerButton);
nifty.subscribe(niftyScreen, id + "#buttonOpen", ButtonClickedEvent.class, eventHandlerButton);
}
if (eventHandlerClosed == null) {
eventHandlerClosed = new EventTopicSubscriber<WindowClosedEvent>() {
@Override
public void onEvent(String arg0, WindowClosedEvent arg1) {
cancel();
}
};
nifty.subscribe(niftyScreen, "windowFile", WindowClosedEvent.class, eventHandlerClosed);
}
if (eventHandlerDirectory == null) {
eventHandlerDirectory = new EventTopicSubscriber<NiftyInputEvent>() {
@Override
public void onEvent(String arg0, NiftyInputEvent arg1) {
if (arg0.equalsIgnoreCase(id + "#directory") && arg1.toString().equalsIgnoreCase("SubmitText")) {
TextField textField = nifty.getCurrentScreen().findNiftyControl(id+"#directory", TextField.class);
File file = new File(textField.getRealText());
newDirectory(file);
}
if (arg0.equalsIgnoreCase(id + "#filename") ) {
Button b = nifty.getCurrentScreen().findNiftyControl(id+"#buttonOpen", Button.class);
b.setEnabled(true);
}
}
};
nifty.subscribe(niftyScreen, id + "#directory", NiftyInputEvent.class, eventHandlerDirectory);
nifty.subscribe(niftyScreen, id + "#filename", NiftyInputEvent.class, eventHandlerDirectory);
}
}
@Override
public boolean inputEvent(NiftyInputEvent arg0) {
// TODO Auto-generated method stub
return true;
}
@Override
public void onFocus(boolean arg0) {
// TODO Auto-generated method stub
}
@Override
public void onStartScreen() {
// TODO Auto-generated method stub
}
public void newDirectory(File newDirectory) {
currentDirectory = newDirectory;
TextField textField = nifty.getCurrentScreen().findNiftyControl(id+"#directory", TextField.class);
textField.setText(currentDirectory.getAbsolutePath());
textField = nifty.getCurrentScreen().findNiftyControl(id+"#filename", TextField.class);
textField.setText("");
Button b = nifty.getCurrentScreen().findNiftyControl(id+"#buttonOpen", Button.class);
b.setEnabled(false);
ListBox<String> listBox = nifty.getCurrentScreen().findNiftyControl(id+"#listFiles", ListBox.class);
listBox.removeAllItems(listBox.getItems());
if (currentDirectory.getParentFile() != null)
listBox.addItem("..");
DropDown dropDown = nifty.getCurrentScreen().findNiftyControl(id+"#fileTypeDropBox", DropDown.class);
if (dropDown.getSelectedIndex() == 0)
directories = currentDirectory.listFiles(new FileFilter() {
@Override
public boolean accept(File pathname) {
return pathname.getName().toLowerCase().endsWith(filterEnding) | pathname.isDirectory();
}
});
else
directories = currentDirectory.listFiles();
for (int i=0; i < directories.length; i++)
listBox.addItem(directories[i].getName());
listBox.selectItemByIndex(-1);
}
protected void newFile(File file) {
TextField textField = nifty.getCurrentScreen().findNiftyControl(id+"#filename", TextField.class);
textField.setText(file.getName());
Button b = nifty.getCurrentScreen().findNiftyControl(id+"#buttonOpen", Button.class);
b.setEnabled(true);
}
protected void open() {
if (!isClosing) {
isClosing = true;
TextField textField = nifty.getCurrentScreen().findNiftyControl(id+"#filename", TextField.class);
String filename = textField.getRealText().trim();
if (filename.length() > 0) {
File currentFile = new File(currentDirectory, filename);
if (fileSelectorObserver != null) {
fileSelectorObserver.selected(true, currentDirectory, currentFile);
}
}
else {
if (fileSelectorObserver != null) {
fileSelectorObserver.selected(false, null, null);
}
}
close();
}
}
protected void cancel() {
if (!isClosing) {
isClosing = true;
if (fileSelectorObserver != null) {
fileSelectorObserver.selected(false, null, null);
}
close();
}
}
public void setFileSelectorObserver(FileSelectorObserver fileSelectorObserver) {
this.fileSelectorObserver = fileSelectorObserver;
}
private void close() {
}
public void setDirectory(File file) {
if (file != null)
newDirectory(file);
}
}
[/Java]
An interface
[java]
import java.io.File;
public interface FileSelectorObserver {
public void selected(boolean ok, File directory, File file);
}
[/java]
. Why don’t you send a pull request to nifty-gui on