gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.swing / org.gvsig.raster.swing.impl / src / main / java / org / gvsig / raster / swing / impl / pagedtable / Pager.java @ 1802
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.raster.swing.impl.pagedtable; |
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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.Observable; |
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import javax.swing.JOptionPane; |
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import org.gvsig.andami.PluginServices; |
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import org.gvsig.i18n.Messages; |
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import org.gvsig.raster.swing.pagedtable.PagedTable; |
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import org.gvsig.raster.swing.pagedtable.PagedTableEvent; |
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import org.gvsig.raster.swing.pagedtable.PagedTableListener; |
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/**
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class Pager extends Observable { |
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private List<Object> entries = null; |
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private int entriesPerPage = 0; |
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private int selectedPage = 0; |
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private int[] selectedRows = null; |
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private List<PagedTableListener> listeners = null; |
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private PagedTable table = null; |
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private String deleteOneEntryMessage = null; |
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private String deleteAllEntriesMessage = null; |
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public Pager(int entriesPerPage, PagedTable table) { |
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this.entriesPerPage = entriesPerPage;
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entries = new ArrayList<Object>(); |
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listeners = new ArrayList<PagedTableListener>(); |
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this.table = table;
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} |
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public void throwEvent(int event, int[] rows) { |
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setChanged(); |
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notifyObservers(event); |
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for (int i = 0; i < listeners.size(); i++) { |
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listeners.get(i).tableChanged(new PagedTableEvent(table, event, rows));
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} |
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} |
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public void setConfirmationMessageDeleteAllEntries(String message) { |
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deleteAllEntriesMessage = message; |
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} |
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public void setConfirmationMessageDeleteOneEntry(String message) { |
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deleteOneEntryMessage = message; |
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} |
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//*************ROWS**********************
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public void setSelectedRows(int[] rows) { |
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selectedRows = rows; |
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throwEvent(PagedTableEvent.EVENT_SELECTED_ROWS, rows); |
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} |
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public void increaseSelectedRows() { |
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boolean change = false; |
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for (int i = 0; i < selectedRows.length; i++) { |
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if(selectedRows[i] < getEntriesCount()) {
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selectedRows[i] ++; |
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change = true;
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} |
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} |
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if(change) {
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throwEvent(PagedTableEvent.EVENT_SELECTED_ROWS, selectedRows); |
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} |
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} |
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public void decreaseSelectedRows() { |
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boolean change = false; |
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for (int i = 0; i < selectedRows.length; i++) { |
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if(selectedRows[i] > 0) { |
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selectedRows[i] --; |
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change = true;
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} |
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} |
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if(change) {
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throwEvent(PagedTableEvent.EVENT_SELECTED_ROWS, selectedRows); |
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} |
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} |
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public void addSelectedRow(int row) { |
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int[] newSelected = new int[selectedRows.length + 1]; |
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for (int i = 0; i < selectedRows.length; i++) { |
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newSelected[i] = selectedRows[i]; |
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} |
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newSelected[newSelected.length - 1] = row;
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selectedRows = newSelected; |
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throwEvent(PagedTableEvent.EVENT_SELECTED_ROWS, selectedRows); |
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} |
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public int[] getSelectedRows() { |
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return selectedRows;
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} |
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/**
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* Adds a new entry. In the first place, if it is necessary
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* changes the selected page and throws the event to actualize the
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* table and controls. Next it will notify the "add entry" event
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*
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* @param entry
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*/
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public void addEntry(Object entry) { |
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int newSelectedRow = entries.size();
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if(!isInCurrentPage(newSelectedRow)) {
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setSelectedPage(getPageFromRow(newSelectedRow)); |
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throwEvent(PagedTableEvent.EVENT_SELECTED_PAGE, new int[]{newSelectedRow}); |
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} |
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entries.add(entry); |
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throwEvent(PagedTableEvent.EVENT_ADD_ENTRY, new int[]{newSelectedRow}); |
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setSelectedRows(new int[]{newSelectedRow}); |
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} |
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public Object[] getEntry(int row) { |
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if(row >= 0 && row < entries.size()) |
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return (Object[])entries.get(row); |
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return null; |
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} |
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public void removeEntry(int pos) { |
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if(deleteOneEntryMessage != null) { |
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if (!messageBoxYesOrNot(deleteOneEntryMessage, null)) |
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return;
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} |
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if(pos >= 0 && pos < entries.size()) { |
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int oldSelectedPageInRow = getPageFromRow(pos);
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int oldSelectedPage = getSelectedPageNumber();
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Object removedEntry = entries.get(pos);
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entries.remove(pos); |
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if(isSelectedRow(pos)) {
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//La p?gina donde est? la entrada a borrar est? en la p?gina seleccionada
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if(oldSelectedPageInRow == oldSelectedPage) {
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int newRowSelected = selectAlternativeRow(pos);
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int newPageSelected = getPageFromRow(newRowSelected);
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if(newPageSelected != oldSelectedPage) {
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setSelectedPage(newPageSelected); |
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throwEvent(PagedTableEvent.EVENT_SELECTED_PAGE, new int[]{pos}); |
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return;
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} |
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} |
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} |
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setChanged(); |
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notifyObservers(PagedTableEvent.EVENT_REMOVE_ENTRY); |
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for (int i = 0; i < listeners.size(); i++) { |
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listeners.get(i).tableChanged(new PagedTableEvent(table, PagedTableEvent.EVENT_REMOVE_ENTRY, removedEntry));
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} |
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} |
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} |
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private int selectAlternativeRow(int row) { |
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for (int i = 0; i < selectedRows.length; i++) { |
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if(selectedRows[i] == row && selectedRows[i] != 0) { |
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selectedRows[i] --; |
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return selectedRows[i];
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} |
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} |
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return row;
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} |
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public void swapRow(int i, int j) { |
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if(i == j)
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return;
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if(j < i) {
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int aux = i;
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i = j; |
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j = aux; |
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} |
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Object a = entries.get(i);
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Object b = entries.get(j);
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entries.add(i, b); |
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entries.remove(i + 1);
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entries.add(j, a); |
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entries.remove(j + 1);
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if(!isSelectedRow(j) || !isSelectedRow(i)) { //Si hay solo una seleccionada se intercambia la selecci?n |
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for (int k = 0; k < selectedRows.length; k++) { |
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if(selectedRows[k] == j) {
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selectedRows[k] = i; |
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throwEvent(PagedTableEvent.EVENT_SELECTED_ROWS, new int[]{i, j}); |
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break;
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} |
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if(selectedRows[k] == i) {
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selectedRows[k] = j; |
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throwEvent(PagedTableEvent.EVENT_SELECTED_ROWS, new int[]{i, j}); |
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break;
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} |
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} |
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} |
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throwEvent(PagedTableEvent.EVENT_SWAP_ENTRIES, new int[]{i, j}); |
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} |
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public boolean isSelectedRow(int row) { |
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if(selectedRows == null) |
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return false; |
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for (int i = 0; i < selectedRows.length; i++) { |
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if(selectedRows[i] == row)
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return true; |
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} |
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return false; |
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} |
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/**
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* Gets the number of entries in this pager
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* @return
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*/
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public int getEntriesCount() { |
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return entries.size();
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} |
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/**
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* Gets the number of row from the row in the current page
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* @param pageRow
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* @return
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*/
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public int getRowFromPageRow(int pageRow) { |
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return getSelectedPageNumber() * getEntriesPerPage() + pageRow;
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} |
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public Object[] getLastEntry() { |
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return (Object[])entries.get(entries.size() - 1); |
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} |
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public void removeAllEntries() { |
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if(deleteAllEntriesMessage != null) { |
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if (!messageBoxYesOrNot(deleteAllEntriesMessage, null)) |
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return;
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} |
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entries.clear(); |
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throwEvent(PagedTableEvent.EVENT_REMOVE_ALL, null);
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} |
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public void removeAllEntriesWithoutAsk() { |
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entries.clear(); |
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throwEvent(PagedTableEvent.EVENT_REMOVE_ALL, null);
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} |
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//*************PAGE**********************
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public void setEntriesPerPage(int n) { |
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this.entriesPerPage = n;
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setChanged(); |
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notifyObservers(PagedTableEvent.EVENT_SELECTED_PAGE); |
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} |
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public void increaseSelectedPage() { |
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if(selectedPage < getPageCount() - 1) { |
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selectedPage ++; |
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throwEvent(PagedTableEvent.EVENT_SELECTED_PAGE, null);
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} |
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} |
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public void decreaseSelectedPage() { |
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if (selectedPage > 0) { |
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selectedPage --; |
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throwEvent(PagedTableEvent.EVENT_SELECTED_PAGE, null);
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} |
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} |
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public void setSelectedPage(int page) { |
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if(page >= 0 && page < getPageCount()) { |
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selectedPage = page; |
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throwEvent(PagedTableEvent.EVENT_SELECTED_PAGE, null);
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} |
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} |
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public int getPageFromRow(int row) { |
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if(getEntriesPerPage() > 0) |
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return (int)(row / getEntriesPerPage()); |
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return 0; |
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} |
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public List<Object> getSelectedPage() { |
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return getPage(getSelectedPageNumber());
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} |
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public void removePage(int page) { |
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if(page >= 0 && page < getPageCount()) { |
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int init = entriesPerPage * page;
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int end = init + entriesPerPage;
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for (int i = end - 1; i >= init; i--) { |
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entries.remove(i); |
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} |
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} |
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} |
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public int getPageCount() { |
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return (int)Math.ceil(entries.size() / (double)entriesPerPage); |
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} |
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public boolean isInCurrentPage(int row) { |
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int init = selectedPage * getEntriesPerPage();
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int end = init + getEntriesPerPage() - 1; |
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if(row >= init && row <= end)
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return true; |
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return false; |
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} |
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public List<Object> getPage(int page) { |
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if(page >= 0 && page < getPageCount()) { |
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int init = entriesPerPage * page;
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int end = init + entriesPerPage;
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end = end >= entries.size() ? entries.size() : end; |
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return entries.subList(init, end);
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} |
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return null; |
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} |
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public int getEntriesPerPage() { |
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return entriesPerPage;
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} |
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public int getSelectedPageNumber() { |
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if(selectedPage >= getPageCount()) {
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selectedPage = getPageCount() - 1;
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if(selectedPage < 0) |
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selectedPage = 0;
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} |
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return selectedPage;
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} |
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public void addListener(PagedTableListener listener) { |
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this.listeners.add(listener);
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} |
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public boolean messageBoxYesOrNot(String msg, Object parentWindow){ |
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String string1 = Messages.getText("yes"); |
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String string2 = Messages.getText( "no"); |
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Object[] options = {string1, string2}; |
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int n = JOptionPane.showOptionDialog(table.getJTable(), |
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"<html>" + msg.replaceAll("\n", "<br>") + "</html>", |
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PluginServices.getText(parentWindow, "confirmacion"),
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JOptionPane.YES_NO_OPTION,
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JOptionPane.QUESTION_MESSAGE,
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null,
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options, |
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string1); |
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if (n == JOptionPane.YES_OPTION) |
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return true; |
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else
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return false; |
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} |
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} |