/*
* Jacareto Copyright (c) 2002-2005
* Applied Computer Science Research Group, Darmstadt University of
* Technology, Institute of Mathematics & Computer Science,
* Ludwigsburg University of Education, and Computer Based
* Learning Research Group, Aachen University. All rights reserved.
*
* Jacareto is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* Jacareto 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with Jacareto; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
package jacareto.struct;
import jacareto.parse.RecordTokenizer;
import jacareto.parse.RecordTokenizerState;
import jacareto.record.ListSelectionEventRecordable;
import jacareto.record.MouseEventRecordable;
import jacareto.system.Environment;
import java.awt.event.MouseEvent;
/**
* The selection of a list has changed
*
* @author <a href="mailto:cspannagel@web.de">Christian Spannagel</a>
* @version 1.01
*/
public class ListSelectionChange extends StructureElement {
/**
* Creates a new "list selection change" structure element.
*
* @param env the environment
* @param children the child structure elements
*/
public ListSelectionChange (Environment env, StructureElement[] children) {
super(env, children);
}
/**
* Parses a record which is tokenized by the given record tokenizer.
*
* @param env DOCUMENT ME!
* @param recordTokenizer the record tokenizer
*
* @return a structure element, or <code>null</code> if this class cannot parse the record at
* the current position
*/
public static StructureElement parse (Environment env, RecordTokenizer recordTokenizer) {
StructureElement result = null;
StructureElement[] children = null;
RecordTokenizerState rtState = recordTokenizer.saveState ();
// mouse pressed, list selection, mouse released, list selection, mouse clicked
try {
MouseEventRecordable mousePressed = (MouseEventRecordable) recordTokenizer.next ();
ListSelectionEventRecordable list1 = (ListSelectionEventRecordable) recordTokenizer.next ();
MouseEventRecordable mouseReleased = (MouseEventRecordable) recordTokenizer.next ();
ListSelectionEventRecordable list2 = (ListSelectionEventRecordable) recordTokenizer.next ();
MouseEventRecordable mouseClicked = (MouseEventRecordable) recordTokenizer.next ();
boolean cond = true;
cond = cond && (mousePressed.getID () == MouseEvent.MOUSE_PRESSED) &&
(mouseReleased.getID () == MouseEvent.MOUSE_RELEASED) &&
(mouseClicked.getID () == MouseEvent.MOUSE_CLICKED);
if (cond) {
RecordTokenizerState beforeClick = recordTokenizer.saveState ();
MouseClick secondClick = (MouseClick) MouseClick.parse (env, recordTokenizer);
if ((secondClick != null) &&
(secondClick.getClickedChild ().getClickCount () != 2)) {
secondClick = null;
recordTokenizer.restoreState (beforeClick);
}
StructureElement[] mouseChildren = new StructureElement[3];
mouseChildren[0] = mousePressed;
mouseChildren[1] = mouseReleased;
mouseChildren[2] = mouseClicked;
MouseClick firstClick = new MouseClick(env, mouseChildren);
children = new StructureElement[3];
int index = 0;
if (secondClick != null) {
MouseClick[] mClickChildren = new MouseClick[2];
mClickChildren[0] = firstClick;
mClickChildren[1] = secondClick;
MultipleMouseClick mClick = new MultipleMouseClick(env, mClickChildren);
children[index++] = mClick;
} else {
children[index++] = firstClick;
}
children[index++] = list1;
children[index++] = list2;
} else {
throw new Exception();
}
} catch (Throwable t) {
recordTokenizer.restoreState (rtState);
}
// mouse pressed, focus change, mouse released, list selection, (list selection), mouse clicked
if (children == null) {
try {
MouseEventRecordable mousePressed = (MouseEventRecordable) recordTokenizer.next ();
FocusChange focusChange = (FocusChange) FocusChange.parse (env, recordTokenizer);
MouseEventRecordable mouseReleased = (MouseEventRecordable) recordTokenizer.next ();
ListSelectionEventRecordable list1 = (ListSelectionEventRecordable) recordTokenizer.next ();
ListSelectionEventRecordable list2 = null;
StructureElement tmp = recordTokenizer.get (0);
if ((tmp != null) && tmp instanceof ListSelectionEventRecordable) {
list2 = (ListSelectionEventRecordable) tmp;
recordTokenizer.forward ();
}
MouseEventRecordable mouseClicked = (MouseEventRecordable) recordTokenizer.next ();
boolean cond = true;
cond = cond && (focusChange != null);
cond = cond && (mousePressed.getID () == MouseEvent.MOUSE_PRESSED) &&
(mouseReleased.getID () == MouseEvent.MOUSE_RELEASED) &&
(mouseClicked.getID () == MouseEvent.MOUSE_CLICKED);
if (cond) {
StructureElement[] mouseChildren = new StructureElement[3];
mouseChildren[0] = mousePressed;
mouseChildren[1] = mouseReleased;
mouseChildren[2] = mouseClicked;
if (list2 != null) {
children = new StructureElement[4];
} else {
children = new StructureElement[3];
}
int index = 0;
children[index++] = new MouseClick(env, mouseChildren);
children[index++] = focusChange;
children[index++] = list1;
if (list2 != null) {
children[index++] = list2;
}
} else {
throw new Exception();
}
} catch (Throwable t) {
recordTokenizer.restoreState (rtState);
}
}
// mouse pressed, list selection, focus change, mouse drag, mouse released, list selection
if (children == null) {
try {
MouseEventRecordable mousePressed = (MouseEventRecordable) recordTokenizer.next ();
ListSelectionEventRecordable list1 = (ListSelectionEventRecordable) recordTokenizer.next ();
FocusChange focusChange = (FocusChange) FocusChange.parse (env, recordTokenizer);
MouseDrag mouseDrag = (MouseDrag) MouseDrag.parse (env, recordTokenizer);
MouseEventRecordable mouseReleased = (MouseEventRecordable) recordTokenizer.next ();
ListSelectionEventRecordable list2 = (ListSelectionEventRecordable) recordTokenizer.next ();
boolean cond = true;
cond = cond && (focusChange != null) && (mouseDrag != null);
cond = cond && (mousePressed.getID () == MouseEvent.MOUSE_PRESSED) &&
(mouseReleased.getID () == MouseEvent.MOUSE_RELEASED);
cond = cond && (list1 != null) && (list2 != null);
if (cond) {
children = new StructureElement[6];
int index = 0;
children[index++] = mousePressed;
children[index++] = list1;
children[index++] = focusChange;
children[index++] = mouseDrag;
children[index++] = mouseReleased;
children[index++] = list2;
} else {
throw new Exception();
}
} catch (Throwable t) {
recordTokenizer.restoreState (rtState);
}
}
// mouse pressed, list selection, focus change, mouse released, list selection, mouse clicked
if (children == null) {
try {
MouseEventRecordable mousePressed = (MouseEventRecordable) recordTokenizer.next ();
ListSelectionEventRecordable list1 = (ListSelectionEventRecordable) recordTokenizer.next ();
FocusChange focusChange = (FocusChange) FocusChange.parse (env, recordTokenizer);
MouseEventRecordable mouseReleased = (MouseEventRecordable) recordTokenizer.next ();
ListSelectionEventRecordable list2 = (ListSelectionEventRecordable) recordTokenizer.next ();
MouseEventRecordable mouseClicked = (MouseEventRecordable) recordTokenizer.next ();
boolean cond = true;
cond = cond && (focusChange != null);
cond = cond && (mousePressed.getID () == MouseEvent.MOUSE_PRESSED) &&
(mouseReleased.getID () == MouseEvent.MOUSE_RELEASED) &&
(mouseClicked.getID () == MouseEvent.MOUSE_CLICKED);
cond = cond && (list1 != null) && (list2 != null);
if (cond) {
RecordTokenizerState beforeClick = recordTokenizer.saveState ();
MouseClick secondClick = (MouseClick) MouseClick.parse (env, recordTokenizer);
if ((secondClick != null) &&
(secondClick.getClickedChild ().getClickCount () != 2)) {
secondClick = null;
recordTokenizer.restoreState (beforeClick);
}
StructureElement[] mouseChildren = new StructureElement[3];
mouseChildren[0] = mousePressed;
mouseChildren[1] = mouseReleased;
mouseChildren[2] = mouseClicked;
MouseClick firstClick = new MouseClick(env, mouseChildren);
children = new StructureElement[4];
int index = 0;
if (secondClick != null) {
MouseClick[] mClickChildren = new MouseClick[2];
mClickChildren[0] = firstClick;
mClickChildren[1] = secondClick;
MultipleMouseClick mClick = new MultipleMouseClick(env, mClickChildren);
children[index++] = mClick;
} else {
children[index++] = firstClick;
}
children[index++] = focusChange;
children[index++] = list1;
children[index++] = list2;
} else {
throw new Exception();
}
} catch (Throwable t) {
recordTokenizer.restoreState (rtState);
}
}
// focus change, list selection, list selection,
if (children == null) {
try {
FocusChange focusChange = (FocusChange) FocusChange.parse (env, recordTokenizer);
ListSelectionEventRecordable list1 = (ListSelectionEventRecordable) recordTokenizer.next ();
ListSelectionEventRecordable list2 = (ListSelectionEventRecordable) recordTokenizer.next ();
boolean cond = (focusChange != null) && (list1 != null) && (list2 != null);
if (cond) {
children = new StructureElement[3];
int index = 0;
children[index++] = focusChange;
children[index++] = list1;
children[index++] = list2;
} else {
throw new Exception();
}
} catch (Throwable t) {
recordTokenizer.restoreState (rtState);
}
}
// mouse pressed, list selection, mouse drag, mouse released, list selection
if (children == null) {
try {
MouseEventRecordable mousePressed = (MouseEventRecordable) recordTokenizer.next ();
ListSelectionEventRecordable list1 = (ListSelectionEventRecordable) recordTokenizer.next ();
MouseDrag mouseDrag = (MouseDrag) MouseDrag.parse (env, recordTokenizer);
MouseEventRecordable mouseReleased = (MouseEventRecordable) recordTokenizer.next ();
ListSelectionEventRecordable list2 = (ListSelectionEventRecordable) recordTokenizer.next ();
boolean cond = true;
cond = cond && (mouseDrag != null);
cond = cond && (mousePressed.getID () == MouseEvent.MOUSE_PRESSED) &&
(mouseReleased.getID () == MouseEvent.MOUSE_RELEASED);
cond = cond && (list1 != null) && (list2 != null);
if (cond) {
children = new StructureElement[5];
int index = 0;
children[index++] = mousePressed;
children[index++] = mouseDrag;
children[index++] = list1;
children[index++] = mouseReleased;
children[index++] = list2;
} else {
throw new Exception();
}
} catch (Throwable t) {
recordTokenizer.restoreState (rtState);
}
}
// Create the result;
if (children != null) {
result = new ListSelectionChange(env, children);
} else {
recordTokenizer.restoreState (rtState);
}
return result;
}
/**
* Returns the name of the element.
*
* @return the name
*/
public String getElementName () {
return language.getString ("Structures.ListSelectionChange.Name");
}
/**
* Returns a description of the element.
*
* @return the description
*/
public String getElementDescription () {
return language.getString ("Structures.ListSelectionChange.Description");
}
/**
* Returns a String which describes the content of the element shortly.
*
* @return a string with a short description of the element
*/
public String toShortString () {
return getElementName ();
}
/**
* Clones the element.
*
* @return DOCUMENT ME!
*/
public Object clone () {
StructureElement[] clonedChildren = getClonedChildren ();
return new ListSelectionChange(env, clonedChildren);
}
}
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