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authorBenjamin Culkin <scorpress@gmail.com>2024-05-19 17:56:33 -0400
committerBenjamin Culkin <scorpress@gmail.com>2024-05-19 17:56:33 -0400
commitaedc34d55462a75e329bbf342251ff6504cd117e (patch)
treebcc8f1f2352582717b484df302aeea6696b8f000 /projects/net.wotonomy.ui.swing/src/main/java/net/wotonomy/ui/swing/TimedTextAssociation.java
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diff --git a/projects/net.wotonomy.ui.swing/src/main/java/net/wotonomy/ui/swing/TimedTextAssociation.java b/projects/net.wotonomy.ui.swing/src/main/java/net/wotonomy/ui/swing/TimedTextAssociation.java
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+/*
+Wotonomy: OpenStep design patterns for pure Java applications.
+Copyright (C) 2000 Intersect Software Corporation
+
+This library 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 library 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 library; if not, see http://www.gnu.org
+*/
+
+package net.wotonomy.ui.swing;
+
+import java.awt.Component;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.FocusEvent;
+import java.awt.event.FocusListener;
+import java.net.URL;
+import java.text.Format;
+import java.text.ParseException;
+import java.util.Enumeration;
+import java.util.Iterator;
+
+import javax.swing.Icon;
+import javax.swing.ImageIcon;
+import javax.swing.JOptionPane;
+import javax.swing.JTextArea;
+import javax.swing.LookAndFeel;
+import javax.swing.Timer;
+import javax.swing.event.DocumentEvent;
+import javax.swing.event.DocumentListener;
+import javax.swing.text.Document;
+import javax.swing.text.JTextComponent;
+
+import net.wotonomy.foundation.NSArray;
+import net.wotonomy.foundation.NSSelector;
+import net.wotonomy.foundation.internal.ValueConverter;
+import net.wotonomy.foundation.internal.WotonomyException;
+import net.wotonomy.ui.EOAssociation;
+import net.wotonomy.ui.EODisplayGroup;
+
+/**
+* TimedTextAssociation works like TextAssociation,
+* but instead of using a delayed event to update the
+* model, it uses a timer so that the model is only
+* updated if the user pauses typing for some short interval.
+* This is useful when the update and/or re-read of the model
+* is a costly operation.
+* Bindings are:
+* <ul>
+* <li>value: a property convertable to/from a string</li>
+* <li>editable: a boolean property that determines whether
+* the user can edit the text in the field</li>
+* <li>enabled: a boolean property that determines whether
+* the user can select the text in the field</li>
+* <li>label: a boolean property that determines whether
+* field should appear as a read-only, selectable label</li>
+* <li>icon: a property that returns a Swing icon, for use
+* with JLabels and other components with setIcon() methods.
+* If bound to a static string, the string will be used to
+* load an image resource from the selected object's class.</li>
+* </ul>
+*
+* @author michael@mpowers.net
+* @author $Author: cgruber $
+* @version $Revision: 904 $
+*/
+public class TimedTextAssociation extends EOAssociation
+ implements FocusListener, ActionListener, DocumentListener
+{
+ //TODO: need to refactor this so that it can subclass text association.
+ //This implementation is basically a branch from the v1.20 TextAssociation.
+
+ static final NSArray aspects =
+ new NSArray( new Object[] {
+ ValueAspect, EnabledAspect, EditableAspect, LabelAspect, IconAspect
+ } );
+ static final NSArray aspectSignatures =
+ new NSArray( new Object[] {
+ AttributeToOneAspectSignature,
+ AttributeToOneAspectSignature,
+ AttributeToOneAspectSignature,
+ AttributeToOneAspectSignature
+ } );
+ static final NSArray objectKeysTaken =
+ new NSArray( new Object[] {
+ "text", "enabled", "editable"
+ } );
+
+ private final static NSSelector getText =
+ new NSSelector( "getText" );
+ private final static NSSelector setText =
+ new NSSelector( "setText",
+ new Class[] { String.class } );
+ private final static NSSelector getDocument =
+ new NSSelector( "getDocument" );
+ private final static NSSelector setIcon =
+ new NSSelector( "setIcon",
+ new Class[] { Icon.class } );
+ private final static NSSelector addActionListener =
+ new NSSelector( "addActionListener",
+ new Class[] { ActionListener.class } );
+ private final static NSSelector removeActionListener =
+ new NSSelector( "removeActionListener",
+ new Class[] { ActionListener.class } );
+ private final static NSSelector addFocusListener =
+ new NSSelector( "addFocusListener",
+ new Class[] { FocusListener.class } );
+ private final static NSSelector removeFocusListener =
+ new NSSelector( "removeFocusListener",
+ new Class[] { FocusListener.class } );
+
+ // null handling
+ protected boolean wasNull;
+ protected static final String EMPTY_STRING = "";
+
+ // dirty handling
+ protected boolean needsUpdate;
+ protected boolean hasDocument;
+ protected boolean isListening;
+
+ // formatting
+ protected Format format;
+
+ // cache the value aspect
+ private EODisplayGroup valueDisplayGroup;
+ private String valueKey;
+
+ // coalescing document events
+ protected boolean autoUpdating;
+ protected int interval = 400; // adjust as needed
+ protected Timer keyTimer;
+
+ // NOTE: a new key timer is created for each use and
+ // is disposed when the timer is stopped.
+ // Swing's Timer class is kept in a static list of timers
+ // and each retains a strong reference to their listeners.
+ // This caused a memory leak as associations typically
+ // refer to their controlled component which is referred
+ // to by its parents and so on until no application window
+ // will ever get garbage collected. yikes.
+
+ /**
+ * Constructor specifying the object to be controlled by this
+ * association. Does not establish connection.
+ */
+ public TimedTextAssociation ( Object anObject )
+ {
+ super( anObject );
+ wasNull = false;
+ needsUpdate = false;
+ hasDocument = false;
+ isListening = true;
+ valueDisplayGroup = null;
+ valueKey = null;
+
+ autoUpdating = true;
+ keyTimer = null;
+ }
+
+ /**
+ * Returns a List of aspect signatures whose contents
+ * correspond with the aspects list. Each element is
+ * a string whose characters represent a capability of
+ * the corresponding aspect. <ul>
+ * <li>"A" attribute: the aspect can be bound to
+ * an attribute.</li>
+ * <li>"1" to-one: the aspect can be bound to a
+ * property that returns a single object.</li>
+ * <li>"M" to-one: the aspect can be bound to a
+ * property that returns multiple objects.</li>
+ * </ul>
+ * An empty signature "" means that the aspect can
+ * bind without needing a key.
+ * This implementation returns "A1M" for each
+ * element in the aspects array.
+ */
+ public static NSArray aspectSignatures ()
+ {
+ return aspectSignatures;
+ }
+
+ /**
+ * Returns a List that describes the aspects supported
+ * by this class. Each element in the list is the string
+ * name of the aspect. This implementation returns an
+ * empty list.
+ */
+ public static NSArray aspects ()
+ {
+ return aspects;
+ }
+
+ /**
+ * Returns a List of EOAssociation subclasses that,
+ * for the objects that are usable for this association,
+ * are less suitable than this association.
+ */
+ public static NSArray associationClassesSuperseded ()
+ {
+ return new NSArray();
+ }
+
+ /**
+ * Returns whether this class can control the specified
+ * object.
+ */
+ public static boolean isUsableWithObject ( Object anObject )
+ {
+ return setText.implementedByObject( anObject );
+ }
+
+ /**
+ * Returns a List of properties of the controlled object
+ * that are controlled by this class. For example,
+ * "stringValue", or "selected".
+ */
+ public static NSArray objectKeysTaken ()
+ {
+ return objectKeysTaken;
+ }
+
+ /**
+ * Returns the aspect that is considered primary
+ * or default. This is typically "value" or somesuch.
+ */
+ public static String primaryAspect ()
+ {
+ return ValueAspect;
+ }
+
+ /**
+ * Returns whether this association can bind to the
+ * specified display group on the specified key for
+ * the specified aspect.
+ */
+ public boolean canBindAspect (
+ String anAspect, EODisplayGroup aDisplayGroup, String aKey)
+ {
+ return ( aspects.containsObject( anAspect ) );
+ }
+
+ /**
+ * Binds the specified aspect of this association to the
+ * specified key on the specified display group.
+ */
+ public void bindAspect (
+ String anAspect, EODisplayGroup aDisplayGroup, String aKey )
+ {
+ if ( ValueAspect.equals( anAspect ) )
+ {
+ valueDisplayGroup = aDisplayGroup;
+ valueKey = aKey;
+ }
+ super.bindAspect( anAspect, aDisplayGroup, aKey );
+ }
+
+ /**
+ * Establishes a connection between this association
+ * and the controlled object. This implementation
+ * attempts to add this class as an ActionListener
+ * and as a FocusListener to the specified object.
+ */
+ public void establishConnection ()
+ {
+ Object component = object();
+ try
+ {
+ if ( addActionListener.implementedByObject( component ) )
+ {
+ addActionListener.invoke( component, this );
+ }
+ if ( addFocusListener.implementedByObject( component ) )
+ {
+ addFocusListener.invoke( component, this );
+ }
+ hasDocument = false;
+ if ( getDocument.implementedByObject( component ) )
+ {
+ Object document = getDocument.invoke( component );
+ if ( document instanceof Document )
+ {
+ ((Document)document).addDocumentListener( this );
+ hasDocument = true;
+ }
+ }
+ }
+ catch ( Exception exc )
+ {
+ throw new WotonomyException(
+ "Error while establishing connection", exc );
+ }
+
+ super.establishConnection();
+
+ // forces update from bindings
+ subjectChanged();
+ }
+
+ /**
+ * Breaks the connection between this association and
+ * its object. Override to stop listening for events
+ * from the object.
+ */
+ public void breakConnection ()
+ {
+ Object component = object();
+ try
+ {
+ if ( removeActionListener.implementedByObject( component ) )
+ {
+ removeActionListener.invoke( component, this );
+ }
+ if ( removeFocusListener.implementedByObject( component ) )
+ {
+ removeFocusListener.invoke( component, this );
+ }
+ if ( getDocument.implementedByObject( component ) )
+ {
+ Object document = getDocument.invoke( component );
+ if ( document instanceof Document )
+ {
+ ((Document)document).removeDocumentListener( this );
+ }
+ }
+ }
+ catch ( Exception exc )
+ {
+ throw new WotonomyException(
+ "Error while breaking connection", exc );
+ }
+ super.breakConnection();
+ }
+
+ /**
+ * Called when either the selection or the contents
+ * of an associated display group have changed.
+ */
+ public void subjectChanged ()
+ {
+ Object component = object();
+ EODisplayGroup displayGroup;
+ String key;
+ Object value;
+
+ // value aspect
+ displayGroup = valueDisplayGroup;
+ if ( displayGroup != null )
+ {
+ if ( component instanceof Component )
+ {
+ ((Component)component).setEnabled(
+ displayGroup.enabledToSetSelectedObjectValueForKey( valueKey ) );
+ }
+
+ key = valueKey;
+
+ if ( displayGroup.selectedObjects().size() > 1 )
+ {
+ // if there're more than one object selected, set
+ // the value to blank for all of them.
+ Object previousValue;
+
+ Iterator indexIterator = displayGroup.selectionIndexes().
+ iterator();
+
+ // get value for the first selected object.
+ int initialIndex = ( (Integer)indexIterator.next() ).intValue();
+ previousValue = displayGroup.valueForObjectAtIndex(
+ initialIndex, key );
+ value = null;
+
+ // go through the rest of the selected objects, compare each
+ // value with the previous one. continue comparing if two
+ // values are equal, break the while loop if they're different.
+ // the final value will be the common value of all selected objects
+ // if there is one, or be blank if there is not.
+ while ( indexIterator.hasNext() )
+ {
+ int index = ( (Integer)indexIterator.next() ).intValue();
+ Object currentValue = displayGroup.valueForObjectAtIndex(
+ index, key );
+ if ( currentValue != null && !currentValue.equals( previousValue ) )
+ {
+ value = null;
+ break;
+ }
+ else
+ {
+ // currentValue is the same as the previous one
+ value = currentValue;
+ }
+
+ } // end while
+
+ } else {
+
+ // if there's only one object selected.
+ value = displayGroup.selectedObjectValueForKey( key );
+ } // end checking the size of selected objects in displayGroup
+
+ // convert value to string
+ if ( value == null )
+ {
+ wasNull = true;
+ value = EMPTY_STRING;
+ }
+ else
+ {
+ wasNull = false;
+ if ( format() != null )
+ {
+ try
+ {
+ value = format().format( value );
+ }
+ catch ( IllegalArgumentException exc )
+ {
+ value = value.toString();
+ }
+ }
+ }
+
+
+ try
+ {
+ if ( ! value.toString().equals( getText.invoke( component ) ) )
+ {
+ // No need to listen for any events that might get fired
+ // while setting the text since we are the one setting it.
+ boolean wasListening = isListening;
+ isListening = false;
+
+ // setText is an expensive operation
+ setText.invoke( component, value.toString() );
+
+ isListening = wasListening;
+ needsUpdate = false;
+ }
+ }
+ catch ( Exception exc )
+ {
+ throw new WotonomyException(
+ "Error while updating component connection", exc );
+ }
+ }
+
+ // icon aspect
+ displayGroup = displayGroupForAspect( IconAspect );
+ key = displayGroupKeyForAspect( IconAspect );
+ if ( key != null )
+ {
+ if ( displayGroup != null )
+ {
+ value =
+ displayGroup.selectedObjectValueForKey( key );
+ }
+ else
+ {
+ // treat bound key without display group
+ // as a resource to be loaded from the selected class.
+ value = null;
+ Object o = displayGroup.selectedObject();
+ if ( o != null )
+ {
+ URL url = o.getClass().getResource( key );
+ if ( url != null )
+ {
+ value = new ImageIcon( url );
+ }
+ }
+ }
+
+ try
+ {
+ setIcon.invoke( component, value );
+ }
+ catch ( Exception exc )
+ {
+ throw new WotonomyException(
+ "Error while updating component connection", exc );
+ }
+ }
+
+ // enabled aspect
+ displayGroup = displayGroupForAspect( EnabledAspect );
+ key = displayGroupKeyForAspect( EnabledAspect );
+ if ( ( key != null )
+ && ( component instanceof Component ) )
+ {
+ if ( displayGroup != null )
+ {
+ value =
+ displayGroup.selectedObjectValueForKey( key );
+ }
+ else
+ {
+ // treat bound key without display group as a value
+ value = key;
+ }
+ Boolean converted = null;
+ if ( value != null )
+ {
+ converted = (Boolean)
+ ValueConverter.convertObjectToClass(
+ value, Boolean.class );
+ }
+ if ( converted == null ) converted = Boolean.FALSE;
+ if ( ((Component)component).isEnabled() != converted.booleanValue() )
+ {
+ ((Component)component).setEnabled( converted.booleanValue() );
+ }
+ }
+
+ // editable aspect
+ displayGroup = displayGroupForAspect( EditableAspect );
+ key = displayGroupKeyForAspect( EditableAspect );
+ if ( ( key != null )
+ && ( component instanceof JTextComponent ) )
+ {
+ if ( displayGroup != null )
+ {
+ value =
+ displayGroup.selectedObjectValueForKey( key );
+ }
+ else
+ {
+ // treat bound key without display group as a value
+ value = key;
+ }
+ Boolean converted = (Boolean)
+ ValueConverter.convertObjectToClass(
+ value, Boolean.class );
+
+ if ( converted != null )
+ {
+ if ( converted.booleanValue() != ((JTextComponent)component).isEditable() )
+ {
+ ((JTextComponent)component).setEditable( converted.booleanValue() );
+ }
+ }
+ }
+
+ // label aspect
+ displayGroup = displayGroupForAspect( LabelAspect );
+ key = displayGroupKeyForAspect( LabelAspect );
+
+ if ( ( key != null )
+ && ( component instanceof JTextComponent ) )
+ {
+ if ( displayGroup != null )
+ {
+ value =
+ displayGroup.selectedObjectValueForKey( key );
+ }
+ else
+ {
+ // treat bound key without display group as a value
+ value = key;
+ }
+ Boolean converted = (Boolean)
+ ValueConverter.convertObjectToClass(
+ value, Boolean.class );
+
+ if ( converted != null )
+ {
+ if ( converted.booleanValue() )
+ {
+ if ( component instanceof JTextComponent )
+ {
+ if ( component instanceof JTextArea )
+ {
+ areaToLabel( (JTextArea) component );
+ }
+ else
+ {
+ fieldToLabel( (JTextComponent) component );
+ }
+ }
+ }
+ else
+ {
+ if ( component instanceof JTextComponent )
+ {
+ if ( component instanceof JTextArea )
+ {
+ labelToArea( (JTextArea) component );
+ }
+ else
+ {
+ labelToField( (JTextComponent ) component );
+ }
+ }
+ }
+ }
+ }
+
+ }
+
+ private void fieldToLabel( JTextComponent aTextField )
+ {
+ // turn on wrapping and disable editing and highlighting
+
+ aTextField.setEditable(false);
+ aTextField.setOpaque(false);
+
+ // Set the border, colors and font to that of a label
+
+ LookAndFeel.installBorder(aTextField, "Label.border");
+
+ LookAndFeel.installColorsAndFont(aTextField,
+ "Label.background",
+ "Label.foreground",
+ "Label.font");
+ }
+
+ private void labelToField( JTextComponent aTextField )
+ {
+ // turn on wrapping and disable editing and highlighting
+
+ aTextField.setEditable(true);
+ aTextField.setOpaque(true);
+
+ // Set the border, colors and font to that of a label
+
+ LookAndFeel.installBorder(aTextField, "TextField.border");
+
+ LookAndFeel.installColorsAndFont(aTextField,
+ "TextField.background",
+ "TextField.foreground",
+ "TextField.font");
+ }
+
+ private void areaToLabel( JTextArea aTextArea )
+ {
+ // turn on wrapping and disable editing and highlighting
+
+ aTextArea.setLineWrap(true);
+ aTextArea.setWrapStyleWord(true);
+ aTextArea.setEditable(false);
+
+ // Set the text area's border, colors and font to
+ // that of a label
+
+ LookAndFeel.installBorder(aTextArea, "Label.border");
+
+ LookAndFeel.installColorsAndFont(aTextArea,
+ "Label.background",
+ "Label.foreground",
+ "Label.font");
+
+ }
+
+ private void labelToArea( JTextArea aTextArea )
+ {
+ // turn on wrapping and disable editing and highlighting
+
+ aTextArea.setEditable(true);
+
+ // Set the border, colors and font to that of a label
+
+ LookAndFeel.installBorder(aTextArea, "TextArea.border");
+
+ LookAndFeel.installColorsAndFont(aTextArea,
+ "TextArea.background",
+ "TextArea.foreground",
+ "TextArea.font");
+ }
+
+
+ /**
+ * Forces this association to cause the object to
+ * stop editing and validate the user's input.
+ * @return false if there were problems validating,
+ * or true to continue.
+ */
+ public boolean endEditing ()
+ {
+ if ( keyTimer != null )
+ {
+ keyTimer.stop();
+ keyTimer.removeActionListener( this );
+ keyTimer = null;
+ }
+ return writeValueToDisplayGroup();
+ }
+
+ /**
+ * Writes the value currently in the component
+ * to the selected object in the display group
+ * bound to the value aspect.
+ * @return false if there were problems validating,
+ * or true to continue.
+ */
+ protected boolean writeValueToDisplayGroup()
+ {
+ boolean returnValue = true;
+ if ( hasDocument && !needsUpdate ) return true;
+
+ EODisplayGroup displayGroup = valueDisplayGroup;
+ if ( displayGroup != null )
+ {
+ String key = valueKey;
+ Object component = object();
+ Object value = null;
+ try
+ {
+ //if ( getText.implementedByObject( component ) )
+ //{
+ value = getText.invoke( component );
+ //}
+ }
+ catch ( Exception exc )
+ {
+ throw new WotonomyException(
+ "Error updating display group", exc );
+ }
+
+ if ( ( wasNull ) && ( EMPTY_STRING.equals( value ) ) )
+ {
+ value = null;
+ }
+ else
+ if ( format() != null )
+ {
+ try
+ {
+ value = format().parseObject( value.toString() );
+ }
+ catch ( ParseException exc )
+ {
+ String message = exc.getMessage();
+ //"That format was not recognized.";
+ if ( displayGroup.associationFailedToValidateValue(
+ this, value.toString(), key, exc, message ) )
+ {
+ boolean wasListening = isListening;
+ isListening = false;
+ JOptionPane.showMessageDialog(
+ (Component)component, message );
+ isListening = wasListening;
+ }
+ needsUpdate = false;
+ return false;
+ }
+ }
+
+ needsUpdate = false;
+
+ // only update if the value is different from the one in the display group
+ Object existingValue = displayGroup.selectedObjectValueForKey( key );
+ if ( displayGroup.selectedObjects().size() == 1 )
+ {
+ if ( existingValue == value ) return true;
+ if ( ( existingValue != null ) && ( existingValue.equals( value ) ) ) return true;
+ if ( ( value != null ) && ( value.equals( existingValue ) ) ) return true;
+ }
+
+ // we might lose focus if display group displays a validation message
+ boolean wasListening = isListening;
+ isListening = false;
+
+ Iterator selectedIterator = displayGroup.selectionIndexes().iterator();
+ while ( selectedIterator.hasNext() )
+ {
+ int index = ( (Integer)selectedIterator.next() ).intValue();
+
+ if ( displayGroup.setValueForObjectAtIndex( value, index, key ) )
+ {
+ isListening = wasListening;
+ needsUpdate = false;
+ }
+ else
+ {
+ isListening = wasListening;
+ needsUpdate = false;
+ returnValue = false;
+ }
+ }
+
+ }
+ return returnValue;
+ }
+
+ /**
+ * Sets the Format that is used to convert values from the display
+ * group to and from text that is displayed in the component.
+ * Having a formatter disables auto-updating.
+ */
+ public void setFormat( Format aFormat )
+ {
+ format = aFormat;
+ }
+
+ /**
+ * Gets the Format that is used to convert values from the display
+ * group to and from text that is displayed in the component.
+ */
+ public Format format()
+ {
+ return format;
+ }
+
+ // interface ActionListener
+
+ /**
+ * Updates object on action performed.
+ */
+ public void actionPerformed( ActionEvent evt )
+ {
+ if ( keyTimer != null )
+ {
+ keyTimer.stop();
+ keyTimer.removeActionListener( this );
+ keyTimer = null;
+ }
+ if ( ! isListening ) return;
+ if ( needsUpdate )
+ {
+ writeValueToDisplayGroup();
+ }
+ }
+
+ // interface FocusListener
+
+ /**
+ * Notifies of beginning of edit.
+ */
+ public void focusGained(FocusEvent evt)
+ {
+ if ( ! isListening ) return;
+ Object o;
+ EODisplayGroup displayGroup;
+ Enumeration e = aspects().objectEnumerator();
+ while ( e.hasMoreElements() )
+ {
+ displayGroup =
+ displayGroupForAspect( e.nextElement().toString() );
+ if ( displayGroup != null )
+ {
+ displayGroup.associationDidBeginEditing( this );
+ }
+ }
+ }
+
+ /**
+ * Updates object on focus lost and notifies of end of edit.
+ */
+ public void focusLost(FocusEvent evt)
+ {
+ if ( ! isListening ) return;
+ if ( endEditing() )
+ {
+ Object o;
+ EODisplayGroup displayGroup;
+ Enumeration e = aspects().objectEnumerator();
+ while ( e.hasMoreElements() )
+ {
+ displayGroup =
+ displayGroupForAspect( e.nextElement().toString() );
+ if ( displayGroup != null )
+ {
+ displayGroup.associationDidEndEditing( this );
+ }
+ }
+ }
+ else
+ {
+ // probably should notify of a validation error here,
+ }
+ }
+
+ /**
+ * Returns whether the data model is updated for every change
+ * in the controlled component. If false, the data is only
+ * updated on focus lost or the enter key. Default is true.
+ */
+ public boolean isAutoUpdating()
+ {
+ if ( format() != null ) return false;
+ return autoUpdating;
+ }
+
+ /**
+ * Sets whether the data model is updated for every change
+ * in the controlled component.
+ */
+ public void setAutoUpdating( boolean isAutoUpdating )
+ {
+ autoUpdating = isAutoUpdating;
+ }
+
+ /**
+ * Triggers the key timer to start.
+ */
+ protected void queueUpdate()
+ {
+ if ( isAutoUpdating() )
+ {
+ if ( keyTimer == null )
+ {
+ keyTimer = new Timer( interval, this );
+ }
+ keyTimer.restart();
+ }
+ }
+
+ // interface DocumentListener
+
+ public void insertUpdate(DocumentEvent e)
+ {
+ if ( ! isListening ) return;
+ needsUpdate = true;
+ queueUpdate();
+ }
+
+ public void removeUpdate(DocumentEvent e)
+ {
+ if ( ! isListening ) return;
+ needsUpdate = true;
+ queueUpdate();
+ }
+
+ public void changedUpdate(DocumentEvent e)
+ {
+ if ( ! isListening ) return;
+ needsUpdate = true;
+ queueUpdate();
+ }
+
+}
+
+/*
+ * $Log$
+ * Revision 1.2 2006/02/18 23:19:05 cgruber
+ * Update imports and maven dependencies.
+ *
+ * Revision 1.1 2006/02/16 13:22:22 cgruber
+ * Check in all sources in eclipse-friendly maven-enabled packages.
+ *
+ * Revision 1.3 2004/01/28 18:34:57 mpowers
+ * Better handling for enabling.
+ * Now respecting enabledToSetSelectedObjectValueForKey from display group.
+ *
+ * Revision 1.2 2003/08/06 23:07:52 chochos
+ * general code cleanup (mostly, removing unused imports)
+ *
+ * Revision 1.1 2001/12/20 18:57:24 mpowers
+ * (Re-)Contributing TimedTextAssociation. Just like TA, except uses timers.
+ *
+ * Revision 1.20 2001/10/26 19:58:06 mpowers
+ * Better handling for non-string types. We were testing with equals with the
+ * new value against the existing value in the component. Now we convert
+ * the new value to a string before comparing. Fixes case for properties
+ * of non-String types, like StringBuffer.
+ *
+ * Revision 1.19 2001/09/30 21:57:14 mpowers
+ * Timers were not getting cleaned up if breakConnection was called
+ * before the timer got a chance to fire.
+ *
+ * Revision 1.18 2001/08/22 15:42:26 mpowers
+ * Added support for JTextComponent label-izing.
+ *
+ * Revision 1.17 2001/07/30 16:32:55 mpowers
+ * Implemented support for bulk-editing. Detail associations will now
+ * apply changes to all selected objects.
+ *
+ * Revision 1.16 2001/07/17 19:53:37 mpowers
+ * Made some private fields protected for benefit of subclassers.
+ *
+ * Revision 1.15 2001/06/30 14:59:36 mpowers
+ * LabelAspect now sets the text field's opaque setting.
+ *
+ * Revision 1.14 2001/06/29 14:54:08 mpowers
+ * Another fix for timers - timers were definitely causing a memory leak.
+ *
+ * Revision 1.13 2001/06/26 21:37:19 mpowers
+ * Fixed a null pointer in the new key timer scheme.
+ *
+ * Revision 1.12 2001/06/25 14:46:03 mpowers
+ * Fixed a memory leak involving the use of timers.
+ *
+ * Revision 1.11 2001/06/01 19:14:59 mpowers
+ * Text association's enabled aspect is now more discriminating.
+ *
+ * Revision 1.10 2001/05/18 21:07:24 mpowers
+ * Changed the way we handle failure to update object value.
+ *
+ * Revision 1.9 2001/03/13 21:39:58 mpowers
+ * Improved validation handling.
+ *
+ * Revision 1.8 2001/03/12 12:49:10 mpowers
+ * Improved validation handling.
+ * Having a formatter disables auto-updating.
+ *
+ * Revision 1.7 2001/03/09 22:08:13 mpowers
+ * Now handling any objects that have a valid Document.
+ * No longer checking enabled before updating the enabled state.
+ *
+ * Revision 1.6 2001/03/07 19:57:32 mpowers
+ * Fixed paste error in IconAspect.
+ *
+ * Revision 1.4 2001/02/17 16:52:05 mpowers
+ * Changes in imports to support building with jdk1.1 collections.
+ *
+ * Revision 1.3 2001/01/31 19:12:33 mpowers
+ * Implemented auto-updating in TextComponent.
+ *
+ * Revision 1.2 2001/01/10 15:53:58 mpowers
+ * Preventing a null pointer exception if getText were to return null,
+ * which doesn't happen for JTextFields but might happen for other objects.
+ *
+ * Revision 1.1.1.1 2000/12/21 15:49:08 mpowers
+ * Contributing wotonomy.
+ *
+ * Revision 1.13 2000/12/20 16:25:41 michael
+ * Added log to all files.
+ *
+ *
+ */
+