/*
* (C) Copyright IBM Corp. 1998-2004. All Rights Reserved.
*
* The program is provided "as is" without any warranty express or
* implied, including the warranty of non-infringement and the implied
* warranties of merchantibility and fitness for a particular purpose.
* IBM will not be liable for any damages suffered by you as a result
* of using the Program. In no event will IBM be liable for any
* special, indirect or consequential damages or lost profits even if
* IBM has been advised of the possibility of their occurrence. IBM
* will not be liable for any third party claims against you.
*/
package com.ibm.richtext.uiimpl;
import java.util.EventObject;
import com.ibm.richtext.textlayout.attributes.AttributeSet;
import com.ibm.richtext.styledtext.StyleModifier;
import com.ibm.richtext.textpanel.MTextPanel;
import com.ibm.richtext.textpanel.TextPanelEvent;
import com.ibm.richtext.uiimpl.resources.MenuData;
public final class BooleanStyleMenuItem extends SingleCheckMenuItem {
static final String COPYRIGHT =
"(C) Copyright IBM Corp. 1998-1999 - All Rights Reserved";
private final Object fKey;
private final boolean fCharacter;
private final Object fOnValue;
public BooleanStyleMenuItem(Object style,
Object onValue,
MenuData menuData,
boolean character) {
super(menuData);
if (onValue == null) {
throw new IllegalArgumentException("On value cannot be null");
}
fKey = style;
fCharacter = character;
fOnValue = onValue;
fItem.addListener(new EventListener() {
public void eventOccurred(EventObject event) {
StyleModifier modifier;
MTextPanel panel = getTextPanel();
if (panel == null) {
throw new Error("Menu item is enabled when panel is null!");
}
if (continuousAndCommand()) {
AttributeSet set = new AttributeSet(fKey);
modifier = StyleModifier.createRemoveModifier(set);
}
else {
modifier = StyleModifier.createAddModifier(fKey, fOnValue);
}
if (fCharacter == CHARACTER) {
panel.modifyCharacterStyleOnSelection(modifier);
}
else {
panel.modifyParagraphStyleOnSelection(modifier);
}
}
});
}
private boolean continuousAndCommand() {
MTextPanel panel = getTextPanel();
Object value = (fCharacter == CHARACTER)?
panel.getCharacterStyleOverSelection(fKey) :
panel.getParagraphStyleOverSelection(fKey);
return fOnValue.equals(value);
}
protected void setChecked() {
fItem.setState(continuousAndCommand());
}
public boolean respondsToEventType(int type) {
return type == TextPanelEvent.SELECTION_STYLES_CHANGED;
}
public final void textEventOccurred(TextPanelEvent event) {
setChecked();
}
}