com.viaoa.jfc.control.TextAreaController Maven / Gradle / Ivy
/* Copyright 1999-2015 Vince Via [email protected]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package com.viaoa.jfc.control;
import java.awt.Component;
import java.awt.Rectangle;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.EmptyBorder;
import java.lang.reflect.*;
import com.viaoa.object.*;
import com.viaoa.hub.*;
import com.viaoa.jfc.undo.*;
import com.viaoa.util.*;
import com.viaoa.ds.*;
import com.viaoa.jfc.*;
/**
* Controller for binding OA to JTextArea.
* @author vvia
*
*/
public class TextAreaController extends JFCController implements FocusListener, KeyListener, MouseListener {
private JTextArea textField;
private String prevText;
private boolean bSettingText;
private Object activeObject;
private Object focusActiveObject;
private int dataSourceMax=-2;
private int max=-1;
private OAPlainDocument document;
/**
Create an unbound TextField.
*/
public TextAreaController(JTextArea tf) {
create(tf);
}
/**
Create TextField that is bound to a property path in a Hub.
@param propertyPath path from Hub, used to find bound property.
*/
public TextAreaController(Hub hub, JTextArea tf, String propertyPath) {
super(hub, propertyPath, tf); // this will add hub listener
create(tf);
}
/**
Create TextField that is bound to a property path in a Hub.
@param propertyPath path from Hub, used to find bound property.
*/
public TextAreaController(Object object, JTextArea tf, String propertyPath) {
super(object, propertyPath, tf); // this will add hub listener
create(tf);
}
protected void create(JTextArea tf) {
if (textField != null) {
textField.removeFocusListener(this);
textField.removeKeyListener(this);
textField.removeMouseListener(this);
}
textField = tf;
textField.setBorder(new EmptyBorder(2,2,2,2));
if (actualHub == null) return;
if (textField != null) {
textField.addFocusListener(this);
textField.addKeyListener(this);
textField.addMouseListener(this);
}
// set initial value of textField
// this needs to run before listeners are added
if (getActualHub() != null) {
HubEvent e = new HubEvent(getActualHub(),getActualHub().getActiveObject());
this.afterChangeActiveObject(e);
getEnabledController().add(getActualHub());
}
}
public int getDataSourceMax() {
if (dataSourceMax == -2) {
if (hub != null) {
dataSourceMax = -1;
OADataSource ds = OADataSource.getDataSource(actualHub.getObjectClass());
if (ds != null) {
dataSourceMax = ds.getMaxLength(actualHub.getObjectClass(), getHubListenerPropertyName());
Method method = getLastMethod();
if (method != null) {
if (method.getReturnType().equals(String.class)) {
if (dataSourceMax > 254) dataSourceMax = -1;
}
else dataSourceMax = -1;
}
}
}
}
return dataSourceMax;
}
public int getMax() {
if (max > getDataSourceMax() || max < 0) {
if (dataSourceMax >= 0) return dataSourceMax;
}
return max;
}
/** max length of text. If -1 (default) then unlimited.
*/
public void setMax(int x) {
max = x;
if (document != null) document.setMaxLength(getMax());
}
protected void resetHubOrProperty() { // called when Hub or PropertyName is changed
super.resetHubOrProperty();
if (textField != null) create(textField);
}
public void close() {
if (textField != null) {
textField.removeFocusListener(this);
textField.removeKeyListener(this);
textField.removeMouseListener(this);
}
super.close(); // this will call hub.removeHubListener()
}
public @Override void afterPropertyChange(HubEvent e) {
if (activeObject != null && e.getObject() == activeObject) {
if (e.getPropertyName().equalsIgnoreCase(this.getHubListenerPropertyName()) ) {
update();
}
}
}
public @Override void afterChangeActiveObject(HubEvent e) {
boolean b = (focusActiveObject != null && focusActiveObject == activeObject);
if (b) onFocusLost();
Hub h = getActualHub();
if (h != null) activeObject = getActualHub().getActiveObject();
else activeObject = null;
update();
if (b) onFocusGained();
}
@Override
public void focusGained(FocusEvent e) {
onFocusGained();
}
protected void onFocusGained() {
focusActiveObject = activeObject;
prevText = textField.getText();
}
@Override
public void focusLost(FocusEvent e) {
onFocusLost();
}
/**
Saves changes to property in active object of Hub.
*/
public void onFocusLost() {
if (focusActiveObject != null && focusActiveObject == activeObject) {
saveText();
}
update();
focusActiveObject = null;
//was: update();
}
private boolean bSaving; // only used by saveChanges(), calling setText generates actionPerformed()
public void saveText() {
if (bSettingText) return;
if (bSaving) return;
try {
bSaving = true;
_saveText();
}
finally {
bSaving = false;
}
}
private void _saveText() {
if (activeObject == null) return;
String text = textField.getText();
if (text.equals(prevText)) return;
try {
Object convertedValue = getConvertedValue(text, null); // dont include format - it is for display only
// Object convertedValue = OAReflect.convertParameterFromString(getSetMethod(), text, null); // dont include format - it is for display only
if (convertedValue == null && text.length() > 0) {
JOptionPane.showMessageDialog(SwingUtilities.getRoot(textField),
"Invalid Entry \""+text+"\"",
"Invalid Entry", JOptionPane.ERROR_MESSAGE);
return;
}
String msg = validateNewValue(activeObject, convertedValue);
if (msg == null) {
msg = isValid(activeObject, convertedValue);
}
if (msg != null) {
JOptionPane.showMessageDialog(SwingUtilities.getRoot(textField),
"Invalid Entry \""+text+"\"\n"+msg,
"Invalid Entry", JOptionPane.ERROR_MESSAGE);
return;
}
prevText = text;
Object prevValue = getPropertyPathValue(activeObject);
String prop = getHubListenerPropertyName();
if (prop == null || prop.length() == 0) { // use object. (ex: String.class)
Object oldObj = activeObject;
Hub h = getActualHub();
Object newObj = OAReflect.convertParameterFromString(h.getObjectClass(), text);
if (newObj != null) {
int posx = h.getPos(oldObj);
h.remove(posx);
h.insert(newObj, posx);
}
}
else {
setPropertyPathValue(activeObject, convertedValue);
// OAReflect.setPropertyValue(activeObject, getSetMethod(), convertedValue);
if (text == null || text.length() == 0) {
Class c = getLastMethod().getReturnType();
if (OAReflect.isNumber(c) && activeObject instanceof OAObject) {
OAObjectReflectDelegate.setProperty((OAObject)activeObject, getPropertyPathFromActualHub(), null, null); // was: setNull(prop)
}
}
}
if (getEnableUndo()) {
OAUndoManager.add( OAUndoableEdit.createUndoablePropertyChange(undoDescription, activeObject, getPropertyPathFromActualHub(), prevValue, getPropertyPathValue(activeObject)) );
}
}
catch (Exception e) {
JOptionPane.showMessageDialog(SwingUtilities.getRoot(textField),
"Invalid Entry \""+e.getMessage()+"\"",
"Invalid Entry", JOptionPane.ERROR_MESSAGE);
}
}
private String undoDescription;
/**
Description to use for Undo and Redo presentation names.
@see OAUndoableEdit#setPresentationName
*/
public void setUndoDescription(String s) {
undoDescription = s;
}
/**
Description to use for Undo and Redo presentation names.
@see OAUndoableEdit#setPresentationName
*/
public String getUndoDescription() {
return undoDescription;
}
// Key Events
private boolean bConsumeEsc;
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ESCAPE) {
bConsumeEsc = false;
if (!textField.getText().equals(prevText)) {
bConsumeEsc = true;
e.consume();
textField.setText(prevText);
textField.setCaretPosition(0);
}
}
}
@Override
public void keyReleased(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ESCAPE && bConsumeEsc) {
e.consume();
}
}
@Override
public void keyTyped(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ESCAPE && bConsumeEsc) {
e.consume();
return;
}
}
@Override
public void mouseClicked(MouseEvent e) {
//bMousePressed = true;
}
@Override
public void mouseEntered(MouseEvent e) {
}
@Override
public void mouseExited(MouseEvent e) {
}
@Override
public void mousePressed(MouseEvent e) {
}
@Override
public void mouseReleased(MouseEvent e) {
}
protected Object getPropertyValue(Object obj) {
if (obj == null) return null;
if (getPropertyPath() == null) return null;
Object value = getPropertyPathValue(obj);
if (value instanceof OANullObject) value = null;
if (value != null && obj instanceof OAObject) {
String ss = getPropertyPathFromActualHub();
//was: String ss = getPropertyName();
if (OAObjectReflectDelegate.getPrimitiveNull((OAObject)obj, ss) ) value = null;
}
return value;
}
public Component getTableRenderer(JLabel label, JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
super.getTableRenderer(label, table, value, isSelected, hasFocus, row, column);
return label;
}
@Override
public void update() {
try {
_update();
}
catch (Exception e) {
}
}
public void _update() {
if (textField == null) return;
if (focusActiveObject == null) {
if (getActualHub() != null) {
String text = null;
if (activeObject != null) {
Object value = getPropertyValue(activeObject);
if (value == null) text = "";
else text = OAConv.toString(value, null); // dont format
}
if (text == null) {
text = getNullDescription();
if (text == null) text = " ";
}
boolean bHold = bSettingText;
bSettingText = true;
textField.setText(text);
prevText = text; // 20110112 to fix bug found while testing undo
textField.setCaretPosition(0);
bSettingText = bHold;
}
}
super.update();
super.update(textField, activeObject);
}
}
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