net.alantea.swing.pageelements.elements.URLElement Maven / Gradle / Ivy

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package net.alantea.swing.pageelements.elements;

import java.awt.BorderLayout;
import java.awt.Desktop;
import java.awt.event.ActionEvent;
import java.io.IOException;
import java.lang.reflect.Field;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Map;

import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JPanel;

import net.alantea.horizon.message.Messenger;
import net.alantea.liteprops.StringProperty;
import net.alantea.swing.pageelements.GUIFieldAnnotation;
import net.alantea.swing.pageelements.GUIFieldElement;
import net.alantea.swing.text.InstrumentedTextField;
import net.alantea.utils.MultiMessages;
import net.alantea.utils.exception.LntException;

@GUIFieldAnnotation(value="URL", height=32)
public class URLElement extends GUIFieldElement
{
   private JPanel panel;
   private InstrumentedTextField textfield;
   private boolean avoidCollisions = false;
   
   URLElement(String reference, String type, Field field, Object target, String key,
         boolean editable, String page, int height, int order, Map attrs)
   {
      super(type, field, target, key, editable, page, height, order, attrs);
      
      panel = new JPanel(new BorderLayout());
      
      textfield = new InstrumentedTextField();
      JButton seeButton = new JButton(MultiMessages.get("URLElement.button.see.label"));
      seeButton.setText("...");
      seeButton.addActionListener(this::seeURL);
      panel.add(seeButton, BorderLayout.WEST);
      panel.add(textfield, BorderLayout.CENTER);
      textfield.setEditable(editable);
      
      textfield.getStringProperty().addListener((o, v) -> {
         try
         {
            String old = "";
            if (field.getType().getName().equals(StringProperty.class.getName()))
            {
               avoidCollisions = true;
               StringProperty prop = (StringProperty) field.get(target);
               old = prop.get();
               prop.set(v);
            }
            else if (field.getType().getName().equals(String.class.getName()))
            {
               old = (String) field.get(target);
               field.set(target, v);
            }
            if ((old == null) || (!old.equals(v)))
            {
               Messenger.sendMessage(target, field.getName(), v);
            }
         }
         catch (IllegalArgumentException | IllegalAccessException e)
         {
            new LntException("Error getting URL from field", e);
         }
      });

      try
      {
         if (field.getType().getName().equals(StringProperty.class.getName()))
         {
            StringProperty prop = (StringProperty) field.get(target);
            String val = prop.get();
            textfield.setText(val);
            prop.addListener((o, v) -> {
               if (!avoidCollisions)
               {
                  textfield.setText(v);
               }
               avoidCollisions = false;
            });
         }
         else if (field.getType().getName().equals(String.class.getName()))
         {
            textfield.setText((String) field.get(target));
         }
      }
      catch (IllegalArgumentException | IllegalAccessException e)
      {
         new LntException("Error reading URL field", e);
      }
   }
   
   private void seeURL(ActionEvent e) 
   {
      if (Desktop.isDesktopSupported() && Desktop.getDesktop().isSupported(Desktop.Action.BROWSE)) {
         try
         {
            Desktop.getDesktop().browse(new URI(textfield.getText()));
         }
         catch (IOException | URISyntaxException e1)
         {
            new LntException("Error opening URL on desktop", e1);
         }
      }
   }

   @Override
   protected JComponent getSpecificGUIComponent()
   {
      return panel;
   }

}