Author: jfuerth
Date: Fri Aug 29 09:13:25 2008
New Revision: 2664
Added:
trunk/src/ca/sqlpower/architect/swingui/SQLObjectComboBoxModel.java
Log:
A fun new combo box model that's a good alternative to dumping a list of
SQLObjects into an array.
Added: trunk/src/ca/sqlpower/architect/swingui/SQLObjectComboBoxModel.java
==============================================================================
--- (empty file)
+++ trunk/src/ca/sqlpower/architect/swingui/SQLObjectComboBoxModel.java Fri
Aug 29 09:13:25 2008
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2008, SQL Power Group Inc.
+ *
+ * This file is part of Power*Architect.
+ *
+ * Power*Architect 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Power*Architect 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package ca.sqlpower.architect.swingui;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.swing.ComboBoxModel;
+import javax.swing.event.ListDataEvent;
+import javax.swing.event.ListDataListener;
+
+import ca.sqlpower.architect.ArchitectException;
+import ca.sqlpower.architect.ArchitectRuntimeException;
+import ca.sqlpower.architect.SQLObject;
+import ca.sqlpower.architect.SQLObjectEvent;
+import ca.sqlpower.architect.SQLObjectListener;
+
+/**
+ * Combo box model that presents the list of a SQLObject's children as the
+ * items. It is "live" in that its contents track the object's children in
+ * real time.
+ */
+public class SQLObjectComboBoxModel implements ComboBoxModel {
+
+ private final SQLObject parent;
+
+ private SQLObject selectedItem;
+
+ private final List<ListDataListener> listDataListeners = new
ArrayList<ListDataListener>();
+
+ public SQLObjectComboBoxModel(SQLObject parent) {
+ this.parent = parent;
+ if (!parent.allowsChildren()) {
+ throw new IllegalArgumentException("That parent object doesn't
allow children");
+ }
+ parent.addSQLObjectListener(childEventHandler);
+ }
+
+ public Object getSelectedItem() {
+ return selectedItem;
+ }
+
+ public void setSelectedItem(Object anItem) {
+ selectedItem = (SQLObject) anItem;
+ }
+
+ public Object getElementAt(int index) {
+ try {
+ // swing wants us to shrug and return null if the index is out
of bounds.
+ if (index < 0 || index > parent.getChildCount()) {
+ return null;
+ } else {
+ return parent.getChild(index);
+ }
+ } catch (ArchitectException ex) {
+ throw new ArchitectRuntimeException(ex);
+ }
+ }
+
+ public int getSize() {
+ try {
+ return parent.getChildCount();
+ } catch (ArchitectException ex) {
+ throw new ArchitectRuntimeException(ex);
+ }
+ }
+
+ public void addListDataListener(ListDataListener l) {
+ listDataListeners.add(l);
+ }
+
+ public void removeListDataListener(ListDataListener l) {
+ listDataListeners.remove(l);
+ }
+
+ private void fireListDataEvent(int type, int index0, int index1) {
+ ListDataEvent e = new ListDataEvent(this, type, index0, index1);
+ for (int i = listDataListeners.size() - 1; i >= 0; i--) {
+ listDataListeners.get(i).contentsChanged(e);
+ }
+ }
+
+ private SQLObjectListener childEventHandler = new SQLObjectListener() {
+
+ public void dbChildrenInserted(SQLObjectEvent e) {
+ for (int i : e.getChangedIndices()) {
+ fireListDataEvent(ListDataEvent.INTERVAL_ADDED, i, i);
+ }
+ }
+
+ public void dbChildrenRemoved(SQLObjectEvent e) {
+ for (int i : e.getChangedIndices()) {
+ fireListDataEvent(ListDataEvent.INTERVAL_REMOVED, i, i);
+ }
+ }
+
+ public void dbObjectChanged(SQLObjectEvent e) {
+ // doesn't matter
+ }
+
+ public void dbStructureChanged(SQLObjectEvent e) {
+ // I don't think these happen
+ fireListDataEvent(ListDataEvent.CONTENTS_CHANGED, 0, 0);
+ }
+
+ };
+}
