/******************************************************************************* | |
* Copyright (C) 2009 The University of Manchester | |
* | |
* Modifications to the initial code base are copyright of their respective | |
* authors, or their employers as appropriate. | |
* | |
* This program is free software; you can redistribute it and/or modify it under | |
* the terms of the GNU Lesser General Public License as published by the Free | |
* Software Foundation; either version 2.1 of the License, or (at your option) | |
* any later version. | |
* | |
* This program is distributed in the hope that it will be useful, but WITHOUT | |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more | |
* details. | |
* | |
* You should have received a copy of the GNU Lesser General Public License | |
* along with this program; if not, write to the Free Software Foundation, Inc., | |
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
******************************************************************************/ | |
package net.sf.taverna.t2.ui.perspectives.myexperiment; | |
import java.awt.Color; | |
import java.awt.Cursor; | |
import java.awt.event.ActionEvent; | |
import java.awt.event.ActionListener; | |
import java.awt.event.MouseEvent; | |
import java.awt.event.MouseListener; | |
import java.util.EventListener; | |
import javax.swing.BorderFactory; | |
import javax.swing.Icon; | |
import javax.swing.JLabel; | |
import javax.swing.SwingUtilities; | |
import net.sf.taverna.t2.ui.perspectives.myexperiment.model.Util; | |
/** | |
* @author Sergejs Aleksejevs, Jiten Bhagat | |
*/ | |
public class JClickableLabel extends JLabel implements MouseListener | |
{ | |
// This will hold the data which is relevant to processing the 'click' event on this label | |
private String strData; | |
// This will hold a reference to ResourcePreviewBrowser instance that is supposed to process the clicks | |
// on JClickableLabels | |
private ActionListener clickHandler; | |
public JClickableLabel(String strLabel, String strDataForAction, EventListener eventHandler) | |
{ | |
this(strLabel, strDataForAction, eventHandler, null); | |
} | |
public JClickableLabel(String strLabel, String strDataForAction, EventListener eventHandler, Icon icon) | |
{ | |
this(strLabel, strDataForAction, eventHandler, icon, SwingUtilities.LEFT); | |
} | |
public JClickableLabel(String strLabel, String strDataForAction, EventListener eventHandler, Icon icon, int horizontalAlignment) | |
{ | |
this(strLabel, strDataForAction, eventHandler, icon, horizontalAlignment, null); | |
} | |
/** | |
* | |
* @param strLabel Textual label that will be visible in the UI. | |
* @param strDataForAction Data that will be passed to eventHandler when click on the label is made. | |
* @param eventHandler ActionListener that will process clicks on this label. | |
* @param icon Icon to display in the label. | |
* @param horizontalAlignment This is one of SwingConstants: LEFT, CENTER, RIGHT, LEADING or TRAILING | |
* @param strTooltip Tooltip to show over the label - if none is provided (e.g. null value), the strLabel will be used as a tooltip. | |
*/ | |
public JClickableLabel(String strLabel, String strDataForAction, EventListener eventHandler, Icon icon, int horizontalAlignment, String strTooltip) | |
{ | |
super(strLabel, icon, horizontalAlignment); | |
this.strData = strDataForAction; | |
this.clickHandler = (ActionListener)eventHandler; | |
// empty border at the top and bottom will simulate "line-spacing" | |
// (this is only needed when an icon is displayed) | |
if (icon != null) { | |
this.setBorder(BorderFactory.createEmptyBorder(3, 0, 3, 0)); | |
} | |
// the tooltip for now only shows the full label text | |
this.setToolTipText(strTooltip == null ? strLabel : strTooltip); | |
this.setForeground(Color.BLUE); | |
this.addMouseListener(this); | |
} | |
/* This class extends JLabel, so it can't extend MouseAdapter; | |
* therefore, empty methods will be added for not useful callbacks | |
* from the MouseListener interface. | |
*/ | |
public void mouseClicked(MouseEvent e) | |
{ | |
// call 'actionPerfermed' method on the clickHandler instance that was supplied | |
// on creation of the JClickableLabel instance | |
this.clickHandler.actionPerformed(new ActionEvent(this, e.getID(), this.strData)); | |
} | |
public void mouseEntered(MouseEvent e) | |
{ | |
this.setCursor( Cursor.getPredefinedCursor( Cursor.HAND_CURSOR ) ) ; | |
} | |
public void mouseExited(MouseEvent e) | |
{ | |
this.setCursor( Cursor.getPredefinedCursor( Cursor.DEFAULT_CURSOR ) ) ; | |
} | |
public void mousePressed(MouseEvent e) | |
{ | |
// do nothing | |
} | |
public void mouseReleased(MouseEvent e) | |
{ | |
// do nothing | |
} | |
} |