package nodebox.client.editor;

import nodebox.client.CodeArea;

import nodebox.client.PaneView;

import nodebox.client.Theme;

import javax.swing.*;

import javax.swing.event.*;

import java.awt.*;

import java.util.ArrayList;

public class SimpleEditor extends JPanel implements PaneView, DocumentListener {

private ArrayList<ChangeListener> changeListeners = new ArrayList<ChangeListener>();

private CodeArea codeArea;

private boolean changed = false;

public SimpleEditor() {

setLayout(new BorderLayout());

codeArea = new CodeArea();

codeArea.setBorder(BorderFactory.createEmptyBorder(0, 5, 0, 0));

codeArea.getDocument().addDocumentListener(this);

JScrollPane codeScroll = new JScrollPane(codeArea);

codeScroll.setBorder(null);

add(codeScroll, BorderLayout.CENTER);

}

public String getSource() {

return codeArea.getText();

}

public void setSource(String source) {

codeArea.setText(source);

codeArea.setCaretPosition(0);

codeArea.discardAllEdits();

changed = false;

}

@Override

public void setEnabled(boolean enabled) {

super.setEnabled(enabled);

codeArea.setEnabled(enabled);

if (enabled) {

codeArea.setBackground(Color.white);

} else {

codeArea.setBackground(Theme.EDITOR_DISABLED_BACKGROUND_COLOR);

}

}

public boolean isChanged() {

return changed;

}

public void setChanged(boolean changed) {

this.changed = changed;

if (changed) {

fireDocumentChanged();

}

}

public void insertUpdate(DocumentEvent e) {

setChanged(true);

}

public void removeUpdate(DocumentEvent e) {

setChanged(true);

}

public void changedUpdate(DocumentEvent e) {

setChanged(true);

}

public void addCaretListener(CaretListener l) {

codeArea.addCaretListener(l);

}

public void removeCaretListener(CaretListener l) {

codeArea.removeCaretListener(l);

}

public void addChangeListener(ChangeListener l) {

changeListeners.add(l);

}

public void removeChangeListener(ChangeListener l) {

changeListeners.remove(l);

}

public void fireDocumentChanged() {

ChangeEvent e = new ChangeEvent(this);

for (ChangeListener l : changeListeners) {

l.stateChanged(e);

}

}

}