svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.ui / src / main / java / org / gvsig / gui / beans / editabletextcomponent / EditableTextDecorator.java @ 40561
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 3
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.gui.beans.editabletextcomponent; |
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import java.awt.event.KeyAdapter; |
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import java.awt.event.KeyEvent; |
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import java.awt.event.KeyListener; |
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import java.awt.event.MouseAdapter; |
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import java.awt.event.MouseEvent; |
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import java.beans.PropertyChangeEvent; |
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import java.beans.PropertyChangeListener; |
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import javax.swing.ComboBoxEditor; |
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import javax.swing.event.EventListenerList; |
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import javax.swing.event.UndoableEditEvent; |
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import javax.swing.event.UndoableEditListener; |
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import javax.swing.text.BadLocationException; |
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import javax.swing.text.JTextComponent; |
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import javax.swing.text.PlainDocument; |
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import javax.swing.undo.CannotRedoException; |
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import javax.swing.undo.CannotUndoException; |
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import javax.swing.undo.UndoManager; |
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import org.gvsig.gui.beans.editabletextcomponent.event.UndoRedoEditEvent; |
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import org.gvsig.gui.beans.editabletextcomponent.event.UndoRedoEditListener; |
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import org.gvsig.gui.beans.editionpopupmenu.JOptionsEditionByMousePopupMenu; |
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/**
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* <p>Extra functionality that allows a {@link JTextComponent JTextComponent} having graphical edition options,
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* which allows user to select any: <i>COPY, CUT, PASTE, SELECT ALL, REMOVE, UNDO, REDO</i> in a popup menu.</p>
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*
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* <p>All options will be about the edition of the text in the component.</p>
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*
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* <p><b><i>How select an edition option using the mouse:</i></b> press the right button of the mouse on the text area, and a popup with the options will be displayed. Select and option.<br>
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* <b><i>Default fast-access keys:</i></b>
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* <ul>
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* <li><b>COPY:</b> </li> CTRL + C. Copies from the text field to the clipboard.
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* <li><b>CUT:</b> </li> CTRL + X. Cuts from the text field to the clipboad.
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* <li><b>PASTE:</b> </li> CTRL + V. Copies from the clipboard to the text field.
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* <li><b>REMOVE:</b> </li> SUPR (in spanish keyboard, and the equivalent in others). Removes the selected text.
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* <li><b>SELECT ALL:</b> </li> CTRL + A. Selects all the text.
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* <li><b>UNDO:</b> </li> CTRL + Z. Undoes.
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* <li><b>REDO:</b> </li> SHIFT + CTRL + Z. Redoes.
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* </ul></p>
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*
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* <p>This component by default stores 100 undo/redo actions. This value can be modified.</p>
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*
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* <p>A developer would have to re-implement {@linkplain #defineEditorKeyListener() #defineEditorKeyListener()}, creating
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* a new <code>editorKeyListener</code> for changing any fast-access key.</p>
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*
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* @version 27/02/2008
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* @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es)
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*/
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public class EditableTextDecorator implements IEditableText { |
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// CONSTANTS
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public static final int DEFAULT_UNDO_REDO_LIMIT_ACTIONS = 100; |
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// END CONSTANTS
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// A POPUPMENU FOR EDITION OPTIONS
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private JOptionsEditionByMousePopupMenu optionsEditionByMouse;
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// END A POPUPMENU FOR EDITION OPTIONS
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// UNDO-REDO
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private UndoManager undoManager; |
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private int undoRedoLimitActions; |
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// END UNDO-REDO
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// LISTENERS
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protected KeyListener editorKeyListener; |
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private MouseAdapter editorMouseListener; |
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private PropertyChangeListener editionMenuListener; |
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private EventListenerList undoRedoEditListeners; |
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// END LISTENERS
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// REFERENCE TO THE JTEXTCOMPONENT
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private JTextComponent jTextComponent; |
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// END REFERENCE TO THE JTEXTCOMPONENT
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/**
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* Default constructor
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*/
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public EditableTextDecorator(JTextComponent jTextComponent) { |
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super();
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// Reference to the JTextComponent
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this.jTextComponent = jTextComponent;
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initialize(); |
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// Other configuration tasks
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this.createDefaultListeners();
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this.configure();
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} |
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/**
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* This method sets the start values of inner attributes and creates the necessary inner objects
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*/
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private void initialize() { |
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undoRedoEditListeners = new EventListenerList(); |
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// Allows user to edit
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jTextComponent.setEditable(true);
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// Text options edition popupmenu initialization
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optionsEditionByMouse = new JOptionsEditionByMousePopupMenu();
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// Undo-Redo initialization
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undoManager = new UndoManager(); |
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undoRedoLimitActions = DEFAULT_UNDO_REDO_LIMIT_ACTIONS; // By default is 1
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undoManager.setLimit(undoRedoLimitActions); |
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} |
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/**
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* Creation of default listeners that will use the component
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*/
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private void createDefaultListeners() { |
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// Defines a listener for the PopupMenu of text edition options: when a change is produced in that component, it fires an event
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// and this listener captures it
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defineEditionMenuPropertyChangeListener(); |
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// Defines a key listener for the editor of this component
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defineEditorKeyListener(); |
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// Defines a mouse listener for the editor of this component
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defineEditorMouseListener(); |
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} |
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/**
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* Defines a listener for the PopupMenu of text edition options: when a change is produced in that component, it fires an event
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* and this listener captures and treats it
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*/
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private void defineEditionMenuPropertyChangeListener() { |
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editionMenuListener = new PropertyChangeListener() { |
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/*
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* (non-Javadoc)
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* @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)
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*/
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public void propertyChange(PropertyChangeEvent arg0) { |
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if (arg0.getPropertyName().equals(JOptionsEditionByMousePopupMenu.SELECTEDOPTION)) {
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switch(Integer.parseInt(arg0.getNewValue().toString())) |
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{
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case JOptionsEditionByMousePopupMenu.UNDO:
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undoOperationLogic(); |
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break;
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case JOptionsEditionByMousePopupMenu.REDO:
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redoOperationLogic(); |
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break;
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case JOptionsEditionByMousePopupMenu.CUT:
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jTextComponent.cut(); |
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break;
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case JOptionsEditionByMousePopupMenu.COPY:
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jTextComponent.copy(); |
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break;
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case JOptionsEditionByMousePopupMenu.PASTE:
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jTextComponent.paste(); |
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break;
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case JOptionsEditionByMousePopupMenu.DELETE:
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deleteTextLogic(); |
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break;
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case JOptionsEditionByMousePopupMenu.SELECT_ALL:
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jTextComponent.selectAll(); |
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break;
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default: // do anything |
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} |
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} |
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/*
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else
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{
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if (arg0.getPropertyName().equals(JOptionsEditionByMousePopupMenu.VISIBILITYCHANGED))
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{
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// First True, after False (when false -> optionsEditorWasVisible = true)
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if (!optionsEditionByMouse.isVisible())
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optionsEditorWasVisible = true;
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else
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optionsEditorWasVisible = false;
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}
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}
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*/
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} |
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}; |
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} |
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/**
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* Defines a key listener for the editor of the text component.
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*/
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protected void defineEditorKeyListener() { |
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editorKeyListener = new KeyAdapter() { |
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/*
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* (non-Javadoc)
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* @see java.awt.event.KeyAdapter#keyPressed(java.awt.event.KeyEvent)
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*/
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public void keyPressed(KeyEvent ke) // Executed on the Start view state or Search view state |
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{
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// COPY, CUT, PASTE, SELECT ALL, UNDO AND REDO WITH THE KEYBOARD (Combination of keys; REMOVE is implemented after: KV_DELETE (supr spanish key))
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if (ke.isControlDown())
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{
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// COPY
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if (ke.getKeyCode() == KeyEvent.VK_C) { |
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jTextComponent.copy(); |
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ke.consume(); |
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return;
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} |
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// CUT
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if (ke.getKeyCode() == KeyEvent.VK_X) { |
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jTextComponent.cut(); |
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ke.consume(); |
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return;
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} |
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// PASTE
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if (ke.getKeyCode() == KeyEvent.VK_V) { |
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jTextComponent.paste(); |
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ke.consume(); |
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return;
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} |
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// SELECT ALL
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if (ke.getKeyCode() == KeyEvent.VK_A) { |
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jTextComponent.selectAll(); |
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ke.consume(); |
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return;
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} |
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// UNDO OR REDO
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if (ke.getKeyCode() == KeyEvent.VK_Z) { |
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if (ke.isShiftDown()) // REDO |
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redoOperationLogic(); |
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else //UNDO |
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undoOperationLogic(); |
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ke.consume(); |
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return;
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} |
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} |
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// According the key pressed, do some actions or others
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switch (ke.getKeyCode())
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{
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case KeyEvent.VK_DELETE : // 'supr' key in spanish keyboard |
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deleteTextLogic(); |
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ke.consume(); |
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break;
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} |
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} |
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}; |
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} |
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/**
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* Defines a mouse listener for the editor of the text component.
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*/
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private void defineEditorMouseListener() { |
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editorMouseListener = new MouseAdapter() { |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseAdapter#mouseClicked(java.awt.event.MouseEvent)
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*/
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public void mouseClicked(MouseEvent e) { |
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if (e.getButton() == MouseEvent.BUTTON3) { |
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// By default disable all options
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optionsEditionByMouse.setEnabledAllOptions(false);
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// Enable the "Undo" option if there is any previous state to restore
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if (undoManager.canUndo())
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optionsEditionByMouse.setEnabledUndoOption(true);
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// Enable the "Redo" option if there is any later state to restore
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if (undoManager.canRedo())
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optionsEditionByMouse.setEnabledRedoOption(true);
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// Enable the "Copy", "Cut" and "Delete" options if there is text selected
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if (jTextComponent.getCaretPosition() != jTextComponent.getCaret().getMark())
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{
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optionsEditionByMouse.setEnabledCopyOption(true);
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optionsEditionByMouse.setEnabledCutOption(true);
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optionsEditionByMouse.setEnabledDeleteOption(true);
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} |
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// Enable the "Paste" option if there is text on the system's clipboard
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if ( jTextComponent.getToolkit().getSystemClipboard().getContents(this).toString().length() > 0 ) |
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optionsEditionByMouse.setEnabledPasteOption(true);// |
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// Enable the "Select-All" option (by default it's always enabled)
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optionsEditionByMouse.setEnabledSelectAllOption(true);
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optionsEditionByMouse.setLocation((int)jTextComponent.getLocationOnScreen().getX() + e.getX(), (int)jTextComponent.getLocationOnScreen().getY() + e.getY()); |
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optionsEditionByMouse.setInvoker(jTextComponent); |
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optionsEditionByMouse.setVisible(true);
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} |
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} |
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}; |
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} |
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/**
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* Configures the component and some of its parts
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*/
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private void configure() { |
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// Configures the document of the editor of this component
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PlainDocument document = this.configureDocument(); |
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// Configures the editor (ComboBoxEditor) of this component
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configureEditor(document); |
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// Configures the text-edition-options popupmenu
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configureOptionsEditionByMouse(); |
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} |
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/**
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* Configures the document of the editor of the text component
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*/
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private PlainDocument configureDocument() { |
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// Creates the document of the editor of this component
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PlainDocument document = new PlainDocument(); |
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// Configures the document
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configureUndoManager(document); |
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return document;
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} |
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/**
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* Configures the editor {@link ComboBoxEditor ComboBoxEditor} of the text component.
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*
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* @param document the document to display/edit
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*/
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private void configureEditor(PlainDocument document) { |
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if (jTextComponent != null) { |
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// Removes some previous listeners and adds some new others:
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// Adds the new Key Listener (tries to remove it if it existed before)
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jTextComponent.removeKeyListener(this.editorKeyListener);
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jTextComponent.addKeyListener(this.editorKeyListener);
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// Adds the new Mouse Listener (tries to remove it if it existed before)
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jTextComponent.removeMouseListener(this.editorMouseListener);
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jTextComponent.addMouseListener(this.editorMouseListener);
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// Adds the new document (tries to remove it if it existed before)
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jTextComponent.setDocument(document); |
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} |
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} |
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/**
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* Configures the text-edition-options popup menu.
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*/
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private void configureOptionsEditionByMouse() { |
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this.optionsEditionByMouse.addPropertyChangeListener(editionMenuListener);
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} |
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/**
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* Configures the UndoManager for Undo-Redo operations.
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*/
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private void configureUndoManager(PlainDocument document) { |
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// Listen for undo and redo events
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document.addUndoableEditListener(new UndoableEditListener() { |
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/*
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* (non-Javadoc)
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* @see javax.swing.event.UndoableEditListener#undoableEditHappened(javax.swing.event.UndoableEditEvent)
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*/
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public void undoableEditHappened(UndoableEditEvent evt) { |
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undoManager.addEdit(evt.getEdit()); |
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} |
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}); |
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} |
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/**
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* This method has the logic for a "undo" operation.
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*/
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private void undoOperationLogic() { |
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try {
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if (undoManager.canUndo()) {
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String previousText = jTextComponent.getText();
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undoManager.undo(); |
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String newText = jTextComponent.getText();
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fireUndoRedoEditUpdate(new UndoRedoEditEvent(jTextComponent, UndoRedoEditEvent.UNDO, previousText, newText));
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} |
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} catch (CannotUndoException e) { |
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e.printStackTrace(); |
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} |
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} |
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/**
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* This method has the logic for a "redo" operation.
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*/
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private void redoOperationLogic() { |
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try {
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if (undoManager.canRedo()) {
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String previousText = jTextComponent.getText();
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undoManager.redo(); |
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String newText = jTextComponent.getText();
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fireUndoRedoEditUpdate(new UndoRedoEditEvent(jTextComponent, UndoRedoEditEvent.REDO, previousText, newText));
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} |
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} catch (CannotRedoException e) { |
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e.printStackTrace(); |
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} |
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} |
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////// OTHER METHODS //////
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/*
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* (non-Javadoc)
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* @see org.gvsig.gui.beans.editabletextcomponent.IEditableText#setUndoRedoLimitActions(int)
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*/
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public void setUndoRedoLimitActions(int limit) { |
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this.undoRedoLimitActions = limit;
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undoManager.setLimit(undoRedoLimitActions); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.gui.beans.editabletextcomponent.IEditableText#getUndoRedoLimitActions()
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*/
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public int getUndoRedoLimitActions() { |
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return this.undoRedoLimitActions; |
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} |
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/**
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* This method is invoked when some text has to be removed: With the 'Delete' option of the text-edition-popupmenu or with the 'delete' ('supr'
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* in spanish keyboard) key.
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*/
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private void deleteTextLogic() { |
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// Get the new text:
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try {
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PlainDocument document = (PlainDocument)jTextComponent.getDocument(); |
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int caretPosition = jTextComponent.getCaretPosition();
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int markPosition = jTextComponent.getCaret().getMark();
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int min_index = Math.min(caretPosition, markPosition); |
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int length = Math.abs(caretPosition - markPosition); |
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document.remove(min_index, length); |
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} catch (BadLocationException e) { |
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e.printStackTrace(); |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.gui.beans.editabletextcomponent.IEditableText#addUndoRedoEditListener(org.gvsig.gui.beans.editabletextcomponent.event.UndoRedoEditListener)
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*/
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public void addUndoRedoEditListener(UndoRedoEditListener listener) { |
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undoRedoEditListeners.add(UndoRedoEditListener.class, listener); |
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} |
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/*
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* (non-Javadoc)
|
| 471 |
* @see org.gvsig.gui.beans.editabletextcomponent.IEditableText#removeCaretListener(org.gvsig.gui.beans.editabletextcomponent.event.UndoRedoEditListener)
|
| 472 |
*/
|
| 473 |
public void removeUndoRedoEditListener(UndoRedoEditListener listener) { |
| 474 |
undoRedoEditListeners.remove(UndoRedoEditListener.class, listener); |
| 475 |
} |
| 476 |
|
| 477 |
/*
|
| 478 |
* (non-Javadoc)
|
| 479 |
* @see org.gvsig.gui.beans.editabletextcomponent.IEditableText#getUndoRedoEditListeners()
|
| 480 |
*/
|
| 481 |
public UndoRedoEditListener[] getUndoRedoEditListeners() { |
| 482 |
return (UndoRedoEditListener[])undoRedoEditListeners.getListeners(UndoRedoEditListener.class); |
| 483 |
} |
| 484 |
|
| 485 |
/**
|
| 486 |
* Notifies all listeners that have registered interest for
|
| 487 |
* notification on this event type. The event instance
|
| 488 |
* is lazily created using the parameters passed into
|
| 489 |
* the fire method. The listener list is processed in a
|
| 490 |
* last-to-first manner.
|
| 491 |
*
|
| 492 |
* @param e the event
|
| 493 |
* @see EventListenerList
|
| 494 |
*/
|
| 495 |
protected void fireUndoRedoEditUpdate(UndoRedoEditEvent e) { |
| 496 |
// Guaranteed to return a non-null array
|
| 497 |
Object[] listeners = undoRedoEditListeners.getListenerList(); |
| 498 |
|
| 499 |
if (listeners != null) { |
| 500 |
for (int i = 1; i < listeners.length; i+=2) { |
| 501 |
if (listeners[i] instanceof UndoRedoEditListener) { |
| 502 |
((UndoRedoEditListener)listeners[i]).operationExecuted(e); |
| 503 |
} |
| 504 |
} |
| 505 |
} |
| 506 |
} |
| 507 |
////// END OTHER METHODS //////
|
| 508 |
} |