org.wicketstuff.table.TableUtil.java Source code

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Here is the source code for org.wicketstuff.table.TableUtil.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.wicketstuff.table;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

import javax.swing.DefaultListSelectionModel;
import javax.swing.ListSelectionModel;
import javax.swing.table.TableModel;

import org.apache.wicket.Component;
import org.apache.wicket.behavior.IBehavior;
import org.apache.wicket.behavior.SimpleAttributeModifier;
import org.apache.wicket.markup.html.list.ListItem;
import org.wicketstuff.table.cell.StylizedCell;
import org.wicketstuff.table.column.StylizedColumn;

public class TableUtil {

    public static ListSelectionModel createSingleSelectionModel() {
        ListSelectionModel selectionModel = new DefaultListSelectionModel();
        selectionModel.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        return selectionModel;
    }

    public static Set getRowsToUpdate(int[] oldSelection, int[] newSelection) {
        HashSet oldSelectionSet = new HashSet();
        for (int i = 0; i < oldSelection.length; i++) {
            oldSelectionSet.add(oldSelection[i]);
        }
        HashSet newSelectionSet = new HashSet();
        for (int i = 0; i < newSelection.length; i++) {
            newSelectionSet.add(newSelection[i]);
        }
        final Set newToUpdate = (Set) newSelectionSet.clone();
        newToUpdate.removeAll(oldSelectionSet);
        final Set oldToUpdate = (Set) oldSelectionSet.clone();
        oldToUpdate.removeAll(newSelectionSet);
        newToUpdate.addAll(oldToUpdate);
        return newToUpdate;
    }

    public static int[] getSelectedRows(ListSelectionModel listSelectionModel) {
        int iMin = listSelectionModel.getMinSelectionIndex();
        int iMax = listSelectionModel.getMaxSelectionIndex();

        if ((iMin == -1) || (iMax == -1)) {
            return new int[0];
        }

        int[] rvTmp = new int[1 + (iMax - iMin)];
        int n = 0;
        for (int i = iMin; i <= iMax; i++) {
            if (listSelectionModel.isSelectedIndex(i)) {
                rvTmp[n++] = i;
            }
        }
        int[] rv = new int[n];
        System.arraycopy(rvTmp, 0, rv, 0, n);
        return rv;
    }

    public static boolean doComponentHasBehavior(Component component, Class<? extends IBehavior> behavior) {
        for (Iterator i = component.getBehaviors().iterator(); i.hasNext();) {
            IBehavior b = (IBehavior) i.next();
            if (behavior.isAssignableFrom(b.getClass())) {
                return true;
            }
        }
        return false;
    }

    public static <T extends IBehavior> T getBehavior(Component component, Class<T> behavior) {
        for (Iterator i = component.getBehaviors().iterator(); i.hasNext();) {
            IBehavior b = (IBehavior) i.next();
            if (behavior.isAssignableFrom(b.getClass())) {
                return (T) b;
            }
        }
        return null;
    }

    public static void fillCellCss(final ListItem columnItem, TableModel tableModel, int modelColumnIndex,
            int modelRowIndex) {
        if (tableModel instanceof StylizedCell) {
            String cssClass = ((StylizedCell) tableModel).getCellCss(modelRowIndex, modelColumnIndex);
            if (cssClass != null) {
                columnItem.add(new SimpleAttributeModifier("class", cssClass));
            }
        }
    }

    public static void fillColumnCss(final ListItem columnItem, TableModel tableModel, int modelColumnIndex) {
        if (tableModel instanceof StylizedColumn) {
            String cssClass = ((StylizedColumn) tableModel).getColumnCssClass(modelColumnIndex);
            if (cssClass != null) {
                columnItem.add(new SimpleAttributeModifier("class", cssClass));
            }
        }
    }

}