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-/* DefaultTableColumnModel.java --
- Copyright (C) 2002, 2004 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath 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, or (at your option)
-any later version.
-
-GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package javax.swing.table;
-
-import java.beans.PropertyChangeEvent;
-import java.beans.PropertyChangeListener;
-import java.io.Serializable;
-import java.util.Enumeration;
-import java.util.EventListener;
-import java.util.Vector;
-
-import javax.swing.DefaultListSelectionModel;
-import javax.swing.ListSelectionModel;
-import javax.swing.event.ChangeEvent;
-import javax.swing.event.EventListenerList;
-import javax.swing.event.ListSelectionEvent;
-import javax.swing.event.ListSelectionListener;
-import javax.swing.event.TableColumnModelEvent;
-import javax.swing.event.TableColumnModelListener;
-
-/**
- * DefaultTableColumnModel
- * @author Andrew Selkirk
- * @version 1.0
- */
-public class DefaultTableColumnModel
- implements TableColumnModel, PropertyChangeListener, ListSelectionListener,
- Serializable
-{
- private static final long serialVersionUID = 6580012493508960512L;
-
- /**
- * Columns that this model keeps track of.
- */
- protected Vector tableColumns;
-
- /**
- * Selection Model that keeps track of columns selection
- */
- protected ListSelectionModel selectionModel;
-
- /**
- * Space between two columns. By default it is set to 1
- */
- protected int columnMargin;
-
- /**
- * listenerList keeps track of all listeners registered with this model
- */
- protected EventListenerList listenerList = new EventListenerList();
-
- /**
- * changeEvent is fired when change occurs in one of the columns properties
- */
- protected transient ChangeEvent changeEvent = new ChangeEvent(this);
-
- /**
- * Indicates whether columns can be selected
- */
- protected boolean columnSelectionAllowed;
-
- /**
- * Total width of all the columns in this model
- */
- protected int totalColumnWidth;
-
- /**
- * Constructor DefaultTableColumnModel
- */
- public DefaultTableColumnModel()
- {
- tableColumns = new Vector();
- setSelectionModel(createSelectionModel());
- columnMargin = 1;
- columnSelectionAllowed = false;
- }
-
- /**
- * addColumn adds column to the model. This method fires ColumnAdded
- * event to model's registered TableColumnModelListeners.
- *
- * @param col column to add
- */
- public void addColumn(TableColumn col)
- {
- tableColumns.add(col);
- invalidateWidthCache();
- fireColumnAdded(new TableColumnModelEvent(this,0,tableColumns.size()));
- }
-
- /**
- * removeColumn removes table column from the model. This method fires
- * ColumnRemoved event to model's registered TableColumnModelListeners.
- *
- * @param col column to be removed
- */
- public void removeColumn(TableColumn col)
- {
- int index = getColumnIndex(col);
- fireColumnRemoved(new TableColumnModelEvent(this,index,0));
- tableColumns.remove(col);
- invalidateWidthCache();
- }
-
- /**
- * moveColumn moves column at index i to index j. This method fires
- * ColumnMoved event to model's registered TableColumnModelListeners.
- *
- * @param i index of the column that will be moved
- * @param j index of column's new location
- */
- public void moveColumn(int i, int j)
- {
- Object tmp = tableColumns.get(i);
- tableColumns.set(i, tableColumns.get(j));
- tableColumns.set(j, tmp);
- fireColumnAdded(new TableColumnModelEvent(this,i,j));
- }
-
- /**
- * setColumnMargin sets margin of the columns.
- * @param m new column margin
- */
- public void setColumnMargin(int m)
- {
- columnMargin = m;
- fireColumnMarginChanged();
- }
-
- /**
- * getColumnCount returns number of columns in the model
- * @return int number of columns in the model
- */
- public int getColumnCount()
- {
- return tableColumns.size();
- }
-
- /**
- * getColumns
- * @return Enumeration
- */
- public Enumeration getColumns()
- {
- return tableColumns.elements();
- }
-
- /**
- * getColumnIndex returns index of the specified column
- *
- * @param identifier identifier of the column
- * @return int index of the given column
- */
- public int getColumnIndex(Object identifier)
- {
- return tableColumns.indexOf(identifier, 0);
- }
-
- /**
- * getColumn returns column at the specified index
- * @param i index of the column
- * @return TableColumn column at the specified index
- */
- public TableColumn getColumn(int i)
- {
- return (TableColumn) tableColumns.get(i);
- }
-
- /**
- * getColumnMargin returns column margin
- * @return int column margin
- */
- public int getColumnMargin()
- {
- return columnMargin;
- }
-
- /**
- * getColumnIndexAtX returns column that contains specified x-coordinate.
- * @param x x-coordinate that column should contain
- * @return int index of the column that contains specified x-coordinate relative
- * to this column model
- */
- public int getColumnIndexAtX(int x)
- {
- for (int i = 0; i < tableColumns.size(); ++i)
- {
- int w = ((TableColumn)tableColumns.get(i)).getWidth();
- if (0 <= x && x < w)
- return i;
- else
- x -= w;
- }
- return -1;
- }
-
- /**
- * getTotalColumnWidth returns total width of all the columns including
- * column's margins.
- *
- * @return total width of all the columns
- */
- public int getTotalColumnWidth()
- {
- if (totalColumnWidth == -1)
- recalcWidthCache();
- return totalColumnWidth;
- }
-
- /**
- * setSelectionModel sets selection model that will be used by this ColumnTableModel
- * to keep track of currently selected columns
- *
- * @param model new selection model
- * @exception IllegalArgumentException if model is null
- */
- public void setSelectionModel(ListSelectionModel model)
- {
- if (model == null)
- throw new IllegalArgumentException();
-
- selectionModel = model;
- selectionModel.addListSelectionListener(this);
- }
-
- /**
- * getSelectionModel returns selection model
- * @return ListSelectionModel selection model
- */
- public ListSelectionModel getSelectionModel()
- {
- return selectionModel;
- }
-
- /**
- * setColumnSelectionAllowed sets whether column selection is allowed
- * or not.
- *
- * @param flag true if column selection is allowed and false otherwise
- */
- public void setColumnSelectionAllowed(boolean flag)
- {
- columnSelectionAllowed = flag;
- }
-
- /**
- * getColumnSelectionAllowed indicates whether column selection is
- * allowed or not.
- *
- * @return boolean true if column selection is allowed and false otherwise.
- */
- public boolean getColumnSelectionAllowed()
- {
- return columnSelectionAllowed;
- }
-
- /**
- * getSelectedColumns returns array containing indexes of currently
- * selected columns
- *
- * @return int[] array containing indexes of currently selected columns
- */
- public int[] getSelectedColumns()
- {
- // FIXME: Implementation of this method was taken from private method
- // JTable.getSelections(), which is used in various places in JTable
- // including selected row calculations and cannot be simply removed.
- // This design should be improved to illuminate duplication of code.
-
- ListSelectionModel lsm = this.selectionModel;
- int sz = getSelectedColumnCount();
- int [] ret = new int[sz];
-
- int lo = lsm.getMinSelectionIndex();
- int hi = lsm.getMaxSelectionIndex();
- int j = 0;
- java.util.ArrayList ls = new java.util.ArrayList();
- if (lo != -1 && hi != -1)
- {
- switch (lsm.getSelectionMode())
- {
- case ListSelectionModel.SINGLE_SELECTION:
- ret[0] = lo;
- break;
-
- case ListSelectionModel.SINGLE_INTERVAL_SELECTION:
- for (int i = lo; i <= hi; ++i)
- ret[j++] = i;
- break;
-
- case ListSelectionModel.MULTIPLE_INTERVAL_SELECTION:
- for (int i = lo; i <= hi; ++i)
- if (lsm.isSelectedIndex(i))
- ret[j++] = i;
- break;
- }
- }
- return ret;
- }
-
- /**
- * getSelectedColumnCount returns number of currently selected columns
- * @return int number of currently selected columns
- */
- public int getSelectedColumnCount()
- {
- // FIXME: Implementation of this method was taken from private method
- // JTable.countSelections(), which is used in various places in JTable
- // including selected row calculations and cannot be simply removed.
- // This design should be improved to illuminate duplication of code.
-
- ListSelectionModel lsm = this.selectionModel;
- int lo = lsm.getMinSelectionIndex();
- int hi = lsm.getMaxSelectionIndex();
- int sum = 0;
-
- if (lo != -1 && hi != -1)
- {
- switch (lsm.getSelectionMode())
- {
- case ListSelectionModel.SINGLE_SELECTION:
- sum = 1;
- break;
-
- case ListSelectionModel.SINGLE_INTERVAL_SELECTION:
- sum = hi - lo + 1;
- break;
-
- case ListSelectionModel.MULTIPLE_INTERVAL_SELECTION:
- for (int i = lo; i <= hi; ++i)
- if (lsm.isSelectedIndex(i))
- ++sum;
- break;
- }
- }
-
- return sum;
- }
-
- /**
- * addColumnModelListener adds specified listener to the model's
- * listener list
- *
- * @param listener the listener to add
- */
- public void addColumnModelListener(TableColumnModelListener listener)
- {
- listenerList.add(TableColumnModelListener.class, listener);
- }
-
- /**
- * removeColumnModelListener removes specified listener from the model's
- * listener list.
- *
- * @param listener the listener to remove
- */
- public void removeColumnModelListener(TableColumnModelListener listener)
- {
- listenerList.remove(TableColumnModelListener.class, listener);
- }
-
- /**
- * @since 1.4
- */
- public TableColumnModelListener[] getColumnModelListeners()
- {
- return (TableColumnModelListener[])
- listenerList.getListeners(TableColumnModelListener.class);
- }
-
- /**
- * fireColumnAdded fires TableColumnModelEvent to registered
- * TableColumnModelListeners to indicate that column was added
- *
- * @param e TableColumnModelEvent
- */
- protected void fireColumnAdded(TableColumnModelEvent e)
- {
- TableColumnModelListener[] listeners = getColumnModelListeners();
-
- for (int i=0; i< listeners.length; i++)
- listeners[i].columnAdded(e);
- }
-
- /**
- * fireColumnAdded fires TableColumnModelEvent to registered
- * TableColumnModelListeners to indicate that column was removed
- *
- * @param e TableColumnModelEvent
- */
- protected void fireColumnRemoved(TableColumnModelEvent e)
- {
- TableColumnModelListener[] listeners = getColumnModelListeners();
-
- for (int i=0; i< listeners.length; i++)
- listeners[i].columnRemoved(e);
- }
-
- /**
- * fireColumnAdded fires TableColumnModelEvent to registered
- * TableColumnModelListeners to indicate that column was moved
- *
- * @param e TableColumnModelEvent
- */
- protected void fireColumnMoved(TableColumnModelEvent e)
- {
- TableColumnModelListener[] listeners = getColumnModelListeners();
-
- for (int i=0; i< listeners.length; i++)
- listeners[i].columnMoved(e);
- }
-
- /**
- * fireColumnSelectionChanged fires TableColumnModelEvent to model's
- * registered TableColumnModelListeners to indicate that different column
- * was selected.
- *
- * @param evt ListSelectionEvent
- */
- protected void fireColumnSelectionChanged(ListSelectionEvent evt)
- {
- EventListener [] listeners = getListeners(TableColumnModelListener.class);
- for (int i = 0; i < listeners.length; ++i)
- ((TableColumnModelListener)listeners[i]).columnSelectionChanged(evt);
- }
-
- /**
- * fireColumnMarginChanged fires TableColumnModelEvent to model's
- * registered TableColumnModelListeners to indicate that column margin
- * was changed.
- */
- protected void fireColumnMarginChanged()
- {
- EventListener [] listeners = getListeners(TableColumnModelListener.class);
- for (int i = 0; i < listeners.length; ++i)
- ((TableColumnModelListener)listeners[i]).columnMarginChanged(changeEvent);
- }
-
- /**
- * getListeners returns currently registered listeners with this model.
- * @param listenerType type of listeners to return
- *
- * @return EventListener[] array of model's listeners of the specified type
- */
- public EventListener[] getListeners(Class listenerType)
- {
- return listenerList.getListeners(listenerType);
- }
-
- /**
- * propertyChange handles changes occuring in the properties of the
- * model's columns.
- *
- * @param evt PropertyChangeEvent
- */
- public void propertyChange(PropertyChangeEvent evt)
- {
- if (evt.getPropertyName().equals(TableColumn.COLUMN_WIDTH_PROPERTY))
- invalidateWidthCache();
- }
-
- /**
- * valueChanged handles changes in the selectionModel.
- * @param e ListSelectionEvent
- */
- public void valueChanged(ListSelectionEvent e)
- {
- fireColumnSelectionChanged(e);
- }
-
- /**
- * createSelectionModel creates selection model that will keep track
- * of currently selected column(s)
- *
- * @return ListSelectionModel selection model of the columns
- */
- protected ListSelectionModel createSelectionModel()
- {
- return new DefaultListSelectionModel();
- }
-
- /**
- * recalcWidthCache calculates total width of the columns.
- * If the current cache of the total width is in invalidated state,
- * then width is recalculated. Otherwise nothing is done.
- */
- protected void recalcWidthCache()
- {
- if (totalColumnWidth == -1)
- {
- totalColumnWidth = 0;
- for (int i = 0; i < tableColumns.size(); ++i)
- {
- totalColumnWidth += ((TableColumn)tableColumns.get(i)).getWidth();
- }
- }
- }
-
- /**
- * invalidateWidthCache
- */
- private void invalidateWidthCache()
- {
- totalColumnWidth = -1;
- }
-}
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