/*
* Copyright 2010 IT Mill Ltd.
*
* Licensed 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 com.vaadin.ui;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.vaadin.data.Container;
import com.vaadin.data.Item;
import com.vaadin.data.Property;
import com.vaadin.data.util.ContainerOrderedWrapper;
import com.vaadin.data.util.IndexedContainer;
import com.vaadin.event.Action;
import com.vaadin.event.Action.Handler;
import com.vaadin.event.DataBoundTransferable;
import com.vaadin.event.ItemClickEvent;
import com.vaadin.event.ItemClickEvent.ItemClickListener;
import com.vaadin.event.ItemClickEvent.ItemClickNotifier;
import com.vaadin.event.ItemClickEvent.ItemClickSource;
import com.vaadin.event.MouseEvents.ClickEvent;
import com.vaadin.event.dd.DragAndDropEvent;
import com.vaadin.event.dd.DragSource;
import com.vaadin.event.dd.DropHandler;
import com.vaadin.event.dd.DropTarget;
import com.vaadin.event.dd.acceptcriteria.ClientCriterion;
import com.vaadin.event.dd.acceptcriteria.ServerSideCriterion;
import com.vaadin.terminal.KeyMapper;
import com.vaadin.terminal.PaintException;
import com.vaadin.terminal.PaintTarget;
import com.vaadin.terminal.Resource;
import com.vaadin.terminal.gwt.client.MouseEventDetails;
import com.vaadin.terminal.gwt.client.ui.VScrollTable;
import com.vaadin.terminal.gwt.client.ui.dd.VLazyInitItemIdentifiers;
/**
* <p>
* <code>Table</code> is used for representing data or components in a pageable
* and selectable table.
* </p>
*
* <p>
* Scalability of the Table is largely dictated by the container. A table does
* not have a limit for the number of items and is just as fast with hundreds of
* thousands of items as with just a few. The current GWT implementation with
* scrolling however limits the number of rows to around 500000, depending on
* the browser and the pixel height of rows.
* </p>
*
* <p>
* Components in a Table will not have their caption nor icon rendered.
* </p>
*
* @author IT Mill Ltd.
* @version
* 6.5.4
* @since 3.0
*/
@SuppressWarnings({ "serial", "deprecation" })
@ClientWidget(VScrollTable.class)
public class Table extends AbstractSelect implements Action.Container,
Container.Ordered, Container.Sortable, ItemClickSource,
ItemClickNotifier, DragSource, DropTarget {
private static final Logger logger = Logger
.getLogger(Table.class.getName());
/**
* Modes that Table support as drag sourse.
*/
public enum TableDragMode {
/**
* Table does not start drag and drop events. HTM5 style events started
* by browser may still happen.
*/
NONE,
/**
* Table starts drag with a one row only.
*/
ROW,
/**
* Table drags selected rows, if drag starts on a selected rows. Else it
* starts like in ROW mode. Note, that in Transferable there will still
* be only the row on which the drag started, other dragged rows need to
* be checked from the source Table.
*/
MULTIROW
}
protected static final int CELL_KEY = 0;
protected static final int CELL_HEADER = 1;
protected static final int CELL_ICON = 2;
protected static final int CELL_ITEMID = 3;
protected static final int CELL_FIRSTCOL = 4;
/**
* Left column alignment. <b>This is the default behaviour. </b>
*/
public static final String ALIGN_LEFT = "b";
/**
* Center column alignment.
*/
public static final String ALIGN_CENTER = "c";
/**
* Right column alignment.
*/
public static final String ALIGN_RIGHT = "e";
/**
* Column header mode: Column headers are hidden.
*/
public static final int COLUMN_HEADER_MODE_HIDDEN = -1;
/**
* Column header mode: Property ID:s are used as column headers.
*/
public static final int COLUMN_HEADER_MODE_ID = 0;
/**
* Column header mode: Column headers are explicitly specified with
* {@link #setColumnHeaders(String[])}.
*/
public static final int COLUMN_HEADER_MODE_EXPLICIT = 1;
/**
* Column header mode: Column headers are explicitly specified with
* {@link #setColumnHeaders(String[])}. If a header is not specified for a
* given property, its property id is used instead.
* <p>
* <b>This is the default behavior. </b>
*/
public static final int COLUMN_HEADER_MODE_EXPLICIT_DEFAULTS_ID = 2;
/**
* Row caption mode: The row headers are hidden. <b>This is the default
* mode. </b>
*/
public static final int ROW_HEADER_MODE_HIDDEN = -1;
/**
* Row caption mode: Items Id-objects toString is used as row caption.
*/
public static final int ROW_HEADER_MODE_ID = AbstractSelect.ITEM_CAPTION_MODE_ID;
/**
* Row caption mode: Item-objects toString is used as row caption.
*/
public static final int ROW_HEADER_MODE_ITEM = AbstractSelect.ITEM_CAPTION_MODE_ITEM;
/**
* Row caption mode: Index of the item is used as item caption. The index
* mode can only be used with the containers implementing Container.Indexed
* interface.
*/
public static final int ROW_HEADER_MODE_INDEX = AbstractSelect.ITEM_CAPTION_MODE_INDEX;
/**
* Row caption mode: Item captions are explicitly specified.
*/
public static final int ROW_HEADER_MODE_EXPLICIT = AbstractSelect.ITEM_CAPTION_MODE_EXPLICIT;
/**
* Row caption mode: Item captions are read from property specified with
* {@link #setItemCaptionPropertyId(Object)}.
*/
public static final int ROW_HEADER_MODE_PROPERTY = AbstractSelect.ITEM_CAPTION_MODE_PROPERTY;
/**
* Row caption mode: Only icons are shown, the captions are hidden.
*/
public static final int ROW_HEADER_MODE_ICON_ONLY = AbstractSelect.ITEM_CAPTION_MODE_ICON_ONLY;
/**
* Row caption mode: Item captions are explicitly specified, but if the
* caption is missing, the item id objects <code>toString()</code> is used
* instead.
*/
public static final int ROW_HEADER_MODE_EXPLICIT_DEFAULTS_ID = AbstractSelect.ITEM_CAPTION_MODE_EXPLICIT_DEFAULTS_ID;
/**
* The default rate that table caches rows for smooth scrolling.
*/
private static final double CACHE_RATE_DEFAULT = 2;
/* Private table extensions to Select */
/**
* True if column collapsing is allowed.
*/
private boolean columnCollapsingAllowed = false;
/**
* True if reordering of columns is allowed on the client side.
*/
private boolean columnReorderingAllowed = false;
/**
* Keymapper for column ids.
*/
private final KeyMapper columnIdMap = new KeyMapper();
/**
* Holds visible column propertyIds - in order.
*/
private LinkedList<Object> visibleColumns = new LinkedList<Object>();
/**
* Holds propertyIds of currently collapsed columns.
*/
private final HashSet<Object> collapsedColumns = new HashSet<Object>();
/**
* Holds headers for visible columns (by propertyId).
*/
private final HashMap<Object, String> columnHeaders = new HashMap<Object, String>();
/**
* Holds footers for visible columns (by propertyId).
*/
private final HashMap<Object, String> columnFooters = new HashMap<Object, String>();
/**
* Holds icons for visible columns (by propertyId).
*/
private final HashMap<Object, Resource> columnIcons = new HashMap<Object, Resource>();
/**
* Holds alignments for visible columns (by propertyId).
*/
private HashMap<Object, String> columnAlignments = new HashMap<Object, String>();
/**
* Holds column widths in pixels (Integer) or expand ratios (Float) for
* visible columns (by propertyId).
*/
private final HashMap<Object, Object> columnWidths = new HashMap<Object, Object>();
/**
* Holds column generators
*/
private final HashMap<Object, ColumnGenerator> columnGenerators = new LinkedHashMap<Object, ColumnGenerator>();
/**
* Holds value of property pageLength. 0 disables paging.
*/
private int pageLength = 15;
/**
* Id the first item on the current page.
*/
private Object currentPageFirstItemId = null;
/**
* Index of the first item on the current page.
*/
private int currentPageFirstItemIndex = 0;
/**
* Holds value of property selectable.
*/
private boolean selectable = false;
/**
* Holds value of property columnHeaderMode.
*/
private int columnHeaderMode = COLUMN_HEADER_MODE_EXPLICIT_DEFAULTS_ID;
/**
* Should the Table footer be visible?
*/
private boolean columnFootersVisible = false;
/**
* True iff the row captions are hidden.
*/
private boolean rowCaptionsAreHidden = true;
/**
* Page contents buffer used in buffered mode.
*/
private Object[][] pageBuffer = null;
/**
* Set of properties listened - the list is kept to release the listeners
* later.
*/
private HashSet<Property> listenedProperties = null;
/**
* Set of visible components - the is used for needsRepaint calculation.
*/
private HashSet<Component> visibleComponents = null;
/**
* List of action handlers.
*/
private LinkedList<Handler> actionHandlers = null;
/**
* Action mapper.
*/
private KeyMapper actionMapper = null;
/**
* Table cell editor factory.
*/
private TableFieldFactory fieldFactory = DefaultFieldFactory.get();
/**
* Is table editable.
*/
private boolean editable = false;
/**
* Current sorting direction.
*/
private boolean sortAscending = true;
/**
* Currently table is sorted on this propertyId.
*/
private Object sortContainerPropertyId = null;
/**
* Is table sorting disabled alltogether; even if some of the properties
* would be sortable.
*/
private boolean sortDisabled = false;
/**
* Number of rows explicitly requested by the client to be painted on next
* paint. This is -1 if no request by the client is made. Painting the
* component will automatically reset this to -1.
*/
private int reqRowsToPaint = -1;
/**
* Index of the first rows explicitly requested by the client to be painted.
* This is -1 if no request by the client is made. Painting the component
* will automatically reset this to -1.
*/
private int reqFirstRowToPaint = -1;
private int firstToBeRenderedInClient = -1;
private int lastToBeRenderedInClient = -1;
private boolean isContentRefreshesEnabled = true;
private int pageBufferFirstIndex;
private boolean containerChangeToBeRendered = false;
/**
* Table cell specific style generator
*/
private CellStyleGenerator cellStyleGenerator = null;
/*
* EXPERIMENTAL feature: will tell the client to re-calculate column widths
* if set to true. Currently no setter: extend to enable.
*/
protected boolean alwaysRecalculateColumnWidths = false;
private double cacheRate = CACHE_RATE_DEFAULT;
private TableDragMode dragMode = TableDragMode.NONE;
private DropHandler dropHandler;
private MultiSelectMode multiSelectMode = MultiSelectMode.DEFAULT;
/* Table constructors */
/**
* Creates a new empty table.
*/
public Table() {
setRowHeaderMode(ROW_HEADER_MODE_HIDDEN);
}
/**
* Creates a new empty table with caption.
*
* @param caption
*/
public Table(String caption) {
this();
setCaption(caption);
}
/**
* Creates a new table with caption and connect it to a Container.
*
* @param caption
* @param dataSource
*/
public Table(String caption, Container dataSource) {
this();
setCaption(caption);
setContainerDataSource(dataSource);
}
/* Table functionality */
/**
* Gets the array of visible column id:s, including generated columns.
*
* <p>
* The columns are show in the order of their appearance in this array.
* </p>
*
* @return an array of currently visible propertyIds and generated column
* ids.
*/
public Object[] getVisibleColumns() {
if (visibleColumns == null) {
return null;
}
return visibleColumns.toArray();
}
/**
* Sets the array of visible column property id:s.
*
* <p>
* The columns are show in the order of their appearance in this array.
* </p>
*
* @param visibleColumns
* the Array of shown property id:s.
*/
public void setVisibleColumns(Object[] visibleColumns) {
// Visible columns must exist
if (visibleColumns == null) {
throw new NullPointerException(
"Can not set visible columns to null value");
}
// TODO add error check that no duplicate identifiers exist
// Checks that the new visible columns contains no nulls and properties
// exist
final Collection<?> properties = getContainerPropertyIds();
for (int i = 0; i < visibleColumns.length; i++) {
if (visibleColumns[i] == null) {
throw new NullPointerException("Ids must be non-nulls");
} else if (!properties.contains(visibleColumns[i])
&& !columnGenerators.containsKey(visibleColumns[i])) {
throw new IllegalArgumentException(
"Ids must exist in the Container or as a generated column , missing id: "
+ visibleColumns[i]);
}
}
// If this is called before the constructor is finished, it might be
// uninitialized
final LinkedList<Object> newVC = new LinkedList<Object>();
for (int i = 0; i < visibleColumns.length; i++) {
newVC.add(visibleColumns[i]);
}
// Removes alignments, icons and headers from hidden columns
if (this.visibleColumns != null) {
boolean disabledHere = disableContentRefreshing();
try {
for (final Iterator<Object> i = this.visibleColumns.iterator(); i
.hasNext();) {
final Object col = i.next();
if (!newVC.contains(col)) {
setColumnHeader(col, null);
setColumnAlignment(col, null);
setColumnIcon(col, null);
}
}
} finally {
if (disabledHere) {
enableContentRefreshing(false);
}
}
}
this.visibleColumns = newVC;
// Assures visual refresh
resetPageBuffer();
refreshRenderedCells();
}
/**
* Gets the headers of the columns.
*
* <p>
* The headers match the property id:s given my the set visible column
* headers. The table must be set in either
* {@link #COLUMN_HEADER_MODE_EXPLICIT} or
* {@link #COLUMN_HEADER_MODE_EXPLICIT_DEFAULTS_ID} mode to show the
* headers. In the defaults mode any nulls in the headers array are replaced
* with id.toString().
* </p>
*
* @return the Array of column headers.
*/
public String[] getColumnHeaders() {
if (columnHeaders == null) {
return null;
}
final String[] headers = new String[visibleColumns.size()];
int i = 0;
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext(); i++) {
headers[i] = getColumnHeader(it.next());
}
return headers;
}
/**
* Sets the headers of the columns.
*
* <p>
* The headers match the property id:s given my the set visible column
* headers. The table must be set in either
* {@link #COLUMN_HEADER_MODE_EXPLICIT} or
* {@link #COLUMN_HEADER_MODE_EXPLICIT_DEFAULTS_ID} mode to show the
* headers. In the defaults mode any nulls in the headers array are replaced
* with id.toString() outputs when rendering.
* </p>
*
* @param columnHeaders
* the Array of column headers that match the
* {@link #getVisibleColumns()} method.
*/
public void setColumnHeaders(String[] columnHeaders) {
if (columnHeaders.length != visibleColumns.size()) {
throw new IllegalArgumentException(
"The length of the headers array must match the number of visible columns");
}
this.columnHeaders.clear();
int i = 0;
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext() && i < columnHeaders.length; i++) {
this.columnHeaders.put(it.next(), columnHeaders[i]);
}
// Assures the visual refresh
// FIXME: Is this really needed? Header captions should not affect
// content so requestRepaint() should be sufficient.
resetPageBuffer();
refreshRenderedCells();
}
/**
* Gets the icons of the columns.
*
* <p>
* The icons in headers match the property id:s given my the set visible
* column headers. The table must be set in either
* {@link #COLUMN_HEADER_MODE_EXPLICIT} or
* {@link #COLUMN_HEADER_MODE_EXPLICIT_DEFAULTS_ID} mode to show the headers
* with icons.
* </p>
*
* @return the Array of icons that match the {@link #getVisibleColumns()}.
*/
public Resource[] getColumnIcons() {
if (columnIcons == null) {
return null;
}
final Resource[] icons = new Resource[visibleColumns.size()];
int i = 0;
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext(); i++) {
icons[i] = columnIcons.get(it.next());
}
return icons;
}
/**
* Sets the icons of the columns.
*
* <p>
* The icons in headers match the property id:s given my the set visible
* column headers. The table must be set in either
* {@link #COLUMN_HEADER_MODE_EXPLICIT} or
* {@link #COLUMN_HEADER_MODE_EXPLICIT_DEFAULTS_ID} mode to show the headers
* with icons.
* </p>
*
* @param columnIcons
* the Array of icons that match the {@link #getVisibleColumns()}
* .
*/
public void setColumnIcons(Resource[] columnIcons) {
if (columnIcons.length != visibleColumns.size()) {
throw new IllegalArgumentException(
"The length of the icons array must match the number of visible columns");
}
this.columnIcons.clear();
int i = 0;
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext() && i < columnIcons.length; i++) {
this.columnIcons.put(it.next(), columnIcons[i]);
}
// Assure visual refresh
resetPageBuffer();
refreshRenderedCells();
}
/**
* Gets the array of column alignments.
*
* <p>
* The items in the array must match the properties identified by
* {@link #getVisibleColumns()}. The possible values for the alignments
* include:
* <ul>
* <li>{@link #ALIGN_LEFT}: Left alignment</li>
* <li>{@link #ALIGN_CENTER}: Centered</li>
* <li>{@link #ALIGN_RIGHT}: Right alignment</li>
* </ul>
* The alignments default to {@link #ALIGN_LEFT}: any null values are
* rendered as align lefts.
* </p>
*
* @return the Column alignments array.
*/
public String[] getColumnAlignments() {
if (columnAlignments == null) {
return null;
}
final String[] alignments = new String[visibleColumns.size()];
int i = 0;
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext(); i++) {
alignments[i] = getColumnAlignment(it.next());
}
return alignments;
}
/**
* Sets the column alignments.
*
* <p>
* The items in the array must match the properties identified by
* {@link #getVisibleColumns()}. The possible values for the alignments
* include:
* <ul>
* <li>{@link #ALIGN_LEFT}: Left alignment</li>
* <li>{@link #ALIGN_CENTER}: Centered</li>
* <li>{@link #ALIGN_RIGHT}: Right alignment</li>
* </ul>
* The alignments default to {@link #ALIGN_LEFT}
* </p>
*
* @param columnAlignments
* the Column alignments array.
*/
public void setColumnAlignments(String[] columnAlignments) {
if (columnAlignments.length != visibleColumns.size()) {
throw new IllegalArgumentException(
"The length of the alignments array must match the number of visible columns");
}
// Checks all alignments
for (int i = 0; i < columnAlignments.length; i++) {
final String a = columnAlignments[i];
if (a != null && !a.equals(ALIGN_LEFT) && !a.equals(ALIGN_CENTER)
&& !a.equals(ALIGN_RIGHT)) {
throw new IllegalArgumentException("Column " + i
+ " aligment '" + a + "' is invalid");
}
}
// Resets the alignments
final HashMap<Object, String> newCA = new HashMap<Object, String>();
int i = 0;
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext() && i < columnAlignments.length; i++) {
newCA.put(it.next(), columnAlignments[i]);
}
this.columnAlignments = newCA;
// Assures the visual refresh
resetPageBuffer();
refreshRenderedCells();
}
/**
* Sets columns width (in pixels). Theme may not necessary respect very
* small or very big values. Setting width to -1 (default) means that theme
* will make decision of width.
*
* <p>
* Column can either have a fixed width or expand ratio. The latter one set
* is used. See @link {@link #setColumnExpandRatio(Object, float)}.
*
* @param columnId
* colunmns property id
* @param width
* width to be reserved for colunmns content
* @since 4.0.3
*/
public void setColumnWidth(Object columnId, int width) {
if (width < 0) {
columnWidths.remove(columnId);
} else {
columnWidths.put(columnId, Integer.valueOf(width));
}
}
/**
* Sets the column expand ratio for given column.
* <p>
* Expand ratios can be defined to customize the way how excess space is
* divided among columns. Table can have excess space if it has its width
* defined and there is horizontally more space than columns consume
* naturally. Excess space is the space that is not used by columns with
* explicit width (see {@link #setColumnWidth(Object, int)}) or with natural
* width (no width nor expand ratio).
*
* <p>
* By default (without expand ratios) the excess space is divided
* proportionally to columns natural widths.
*
* <p>
* Only expand ratios of visible columns are used in final calculations.
*
* <p>
* Column can either have a fixed width or expand ratio. The latter one set
* is used.
*
* <p>
* A column with expand ratio is considered to be minimum width by default
* (if no excess space exists). The minimum width is defined by terminal
* implementation.
*
* <p>
* If terminal implementation supports re-sizeable columns the column
* becomes fixed width column if users resizes the column.
*
* @param columnId
* colunmns property id
* @param expandRatio
* the expandRatio used to divide excess space for this column
*/
public void setColumnExpandRatio(Object columnId, float expandRatio) {
if (expandRatio < 0) {
columnWidths.remove(columnId);
} else {
columnWidths.put(columnId, new Float(expandRatio));
}
}
public float getColumnExpandRatio(Object propertyId) {
final Object width = columnWidths.get(propertyId);
if (width == null || !(width instanceof Float)) {
return -1;
}
final Float value = (Float) width;
return value.floatValue();
}
/**
* Gets the pixel width of column
*
* @param propertyId
* @return width of colun or -1 when value not set
*/
public int getColumnWidth(Object propertyId) {
final Object width = columnWidths.get(propertyId);
if (width == null || !(width instanceof Integer)) {
return -1;
}
final Integer value = (Integer) width;
return value.intValue();
}
/**
* Gets the page length.
*
* <p>
* Setting page length 0 disables paging.
* </p>
*
* @return the Length of one page.
*/
public int getPageLength() {
return pageLength;
}
/**
* Sets the page length.
*
* <p>
* Setting page length 0 disables paging. The page length defaults to 15.
* </p>
*
* <p>
* If Table has width set ({@link #setWidth(float, int)} ) the client side
* may update the page length automatically the correct value.
* </p>
*
* @param pageLength
* the length of one page.
*/
public void setPageLength(int pageLength) {
if (pageLength >= 0 && this.pageLength != pageLength) {
this.pageLength = pageLength;
// Assures the visual refresh
resetPageBuffer();
refreshRenderedCells();
}
}
/**
* This method adjusts a possible caching mechanism of table implementation.
*
* <p>
* Table component may fetch and render some rows outside visible area. With
* complex tables (for example containing layouts and components), the
* client side may become unresponsive. Setting the value lower, UI will
* become more responsive. With higher values scrolling in client will hit
* server less frequently.
*
* <p>
* The amount of cached rows will be cacheRate multiplied with pageLength (
* {@link #setPageLength(int)} both below and above visible area..
*
* @param cacheRate
* a value over 0 (fastest rendering time). Higher value will
* cache more rows on server (smoother scrolling). Default value
* is 2.
*/
public void setCacheRate(double cacheRate) {
if (cacheRate < 0) {
throw new IllegalArgumentException(
"cacheRate cannot be less than zero");
}
if (this.cacheRate != cacheRate) {
this.cacheRate = cacheRate;
requestRepaint();
}
}
/**
* @see #setCacheRate(double)
*
* @return the current cache rate value
*/
public double getCacheRate() {
return cacheRate;
}
/**
* Getter for property currentPageFirstItem.
*
* @return the Value of property currentPageFirstItem.
*/
public Object getCurrentPageFirstItemId() {
// Priorise index over id if indexes are supported
if (items instanceof Container.Indexed) {
final int index = getCurrentPageFirstItemIndex();
Object id = null;
if (index >= 0 && index < size()) {
id = getIdByIndex(index);
}
if (id != null && !id.equals(currentPageFirstItemId)) {
currentPageFirstItemId = id;
}
}
// If there is no item id at all, use the first one
if (currentPageFirstItemId == null) {
currentPageFirstItemId = firstItemId();
}
return currentPageFirstItemId;
}
protected Object getIdByIndex(int index) {
return ((Container.Indexed) items).getIdByIndex(index);
}
/**
* Setter for property currentPageFirstItemId.
*
* @param currentPageFirstItemId
* the New value of property currentPageFirstItemId.
*/
public void setCurrentPageFirstItemId(Object currentPageFirstItemId) {
// Gets the corresponding index
int index = -1;
if (items instanceof Container.Indexed) {
index = indexOfId(currentPageFirstItemId);
} else {
// If the table item container does not have index, we have to
// calculates the index by hand
Object id = firstItemId();
while (id != null && !id.equals(currentPageFirstItemId)) {
index++;
id = nextItemId(id);
}
if (id == null) {
index = -1;
}
}
// If the search for item index was successful
if (index >= 0) {
/*
* The table is not capable of displaying an item in the container
* as the first if there are not enough items following the selected
* item so the whole table (pagelength) is filled.
*/
int maxIndex = size() - pageLength;
if (maxIndex < 0) {
maxIndex = 0;
}
if (index > maxIndex) {
setCurrentPageFirstItemIndex(maxIndex);
return;
}
this.currentPageFirstItemId = currentPageFirstItemId;
currentPageFirstItemIndex = index;
}
// Assures the visual refresh
resetPageBuffer();
refreshRenderedCells();
}
protected int indexOfId(Object itemId) {
return ((Container.Indexed) items).indexOfId(itemId);
}
/**
* Gets the icon Resource for the specified column.
*
* @param propertyId
* the propertyId indentifying the column.
* @return the icon for the specified column; null if the column has no icon
* set, or if the column is not visible.
*/
public Resource getColumnIcon(Object propertyId) {
return columnIcons.get(propertyId);
}
/**
* Sets the icon Resource for the specified column.
* <p>
* Throws IllegalArgumentException if the specified column is not visible.
* </p>
*
* @param propertyId
* the propertyId identifying the column.
* @param icon
* the icon Resource to set.
*/
public void setColumnIcon(Object propertyId, Resource icon) {
if (icon == null) {
columnIcons.remove(propertyId);
} else {
columnIcons.put(propertyId, icon);
}
// Assures the visual refresh
resetPageBuffer();
refreshRenderedCells();
}
/**
* Gets the header for the specified column.
*
* @param propertyId
* the propertyId indentifying the column.
* @return the header for the specifed column if it has one.
*/
public String getColumnHeader(Object propertyId) {
if (getColumnHeaderMode() == COLUMN_HEADER_MODE_HIDDEN) {
return null;
}
String header = columnHeaders.get(propertyId);
if ((header == null && getColumnHeaderMode() == COLUMN_HEADER_MODE_EXPLICIT_DEFAULTS_ID)
|| getColumnHeaderMode() == COLUMN_HEADER_MODE_ID) {
header = propertyId.toString();
}
return header;
}
/**
* Sets the column header for the specified column;
*
* @param propertyId
* the propertyId indentifying the column.
* @param header
* the header to set.
*/
public void setColumnHeader(Object propertyId, String header) {
if (header == null) {
columnHeaders.remove(propertyId);
} else {
columnHeaders.put(propertyId, header);
}
// Assures the visual refresh
// FIXME: Is this really needed? Header captions should not affect
// content so requestRepaint() should be sufficient.
refreshRenderedCells();
}
/**
* Gets the specified column's alignment.
*
* @param propertyId
* the propertyID identifying the column.
* @return the specified column's alignment if it as one; null otherwise.
*/
public String getColumnAlignment(Object propertyId) {
final String a = columnAlignments.get(propertyId);
return a == null ? ALIGN_LEFT : a;
}
/**
* Sets the specified column's alignment.
*
* <p>
* Throws IllegalArgumentException if the alignment is not one of the
* following: {@link #ALIGN_LEFT}, {@link #ALIGN_CENTER} or
* {@link #ALIGN_RIGHT}
* </p>
*
* @param propertyId
* the propertyID identifying the column.
* @param alignment
* the desired alignment.
*/
public void setColumnAlignment(Object propertyId, String alignment) {
// Checks for valid alignments
if (alignment != null && !alignment.equals(ALIGN_LEFT)
&& !alignment.equals(ALIGN_CENTER)
&& !alignment.equals(ALIGN_RIGHT)) {
throw new IllegalArgumentException("Column alignment '" + alignment
+ "' is not supported.");
}
if (alignment == null || alignment.equals(ALIGN_LEFT)) {
columnAlignments.remove(propertyId);
return;
}
columnAlignments.put(propertyId, alignment);
// Assures the visual refresh
refreshRenderedCells();
}
/**
* Checks if the specified column is collapsed.
*
* @param propertyId
* the propertyID identifying the column.
* @return true if the column is collapsed; false otherwise;
*/
public boolean isColumnCollapsed(Object propertyId) {
return collapsedColumns != null
&& collapsedColumns.contains(propertyId);
}
/**
* Sets whether the specified column is collapsed or not.
*
*
* @param propertyId
* the propertyID identifying the column.
* @param collapsed
* the desired collapsedness.
* @throws IllegalStateException
* if column collapsing is not allowed
*/
public void setColumnCollapsed(Object propertyId, boolean collapsed)
throws IllegalStateException {
if (!isColumnCollapsingAllowed()) {
throw new IllegalStateException("Column collapsing not allowed!");
}
if (collapsed) {
collapsedColumns.add(propertyId);
} else {
collapsedColumns.remove(propertyId);
}
// Assures the visual refresh
resetPageBuffer();
refreshRenderedCells();
}
/**
* Checks if column collapsing is allowed.
*
* @return true if columns can be collapsed; false otherwise.
*/
public boolean isColumnCollapsingAllowed() {
return columnCollapsingAllowed;
}
/**
* Sets whether column collapsing is allowed or not.
*
* @param collapsingAllowed
* specifies whether column collapsing is allowed.
*/
public void setColumnCollapsingAllowed(boolean collapsingAllowed) {
columnCollapsingAllowed = collapsingAllowed;
if (!collapsingAllowed) {
collapsedColumns.clear();
}
// Assures the visual refresh
refreshRenderedCells();
}
/**
* Checks if column reordering is allowed.
*
* @return true if columns can be reordered; false otherwise.
*/
public boolean isColumnReorderingAllowed() {
return columnReorderingAllowed;
}
/**
* Sets whether column reordering is allowed or not.
*
* @param reorderingAllowed
* specifies whether column reordering is allowed.
*/
public void setColumnReorderingAllowed(boolean reorderingAllowed) {
columnReorderingAllowed = reorderingAllowed;
// Assures the visual refresh
refreshRenderedCells();
}
/*
* Arranges visible columns according to given columnOrder. Silently ignores
* colimnId:s that are not visible columns, and keeps the internal order of
* visible columns left out of the ordering (trailing). Silently does
* nothing if columnReordering is not allowed.
*/
private void setColumnOrder(Object[] columnOrder) {
if (columnOrder == null || !isColumnReorderingAllowed()) {
return;
}
final LinkedList<Object> newOrder = new LinkedList<Object>();
for (int i = 0; i < columnOrder.length; i++) {
if (columnOrder[i] != null
&& visibleColumns.contains(columnOrder[i])) {
visibleColumns.remove(columnOrder[i]);
newOrder.add(columnOrder[i]);
}
}
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext();) {
final Object columnId = it.next();
if (!newOrder.contains(columnId)) {
newOrder.add(columnId);
}
}
visibleColumns = newOrder;
// Assure visual refresh
resetPageBuffer();
refreshRenderedCells();
}
/**
* Getter for property currentPageFirstItem.
*
* @return the Value of property currentPageFirstItem.
*/
public int getCurrentPageFirstItemIndex() {
return currentPageFirstItemIndex;
}
private void setCurrentPageFirstItemIndex(int newIndex,
boolean needsPageBufferReset) {
if (newIndex < 0) {
newIndex = 0;
}
/*
* minimize Container.size() calls which may be expensive. For example
* it may cause sql query.
*/
final int size = size();
/*
* The table is not capable of displaying an item in the container as
* the first if there are not enough items following the selected item
* so the whole table (pagelength) is filled.
*/
int maxIndex = size - pageLength;
if (maxIndex < 0) {
maxIndex = 0;
}
// Ensures that the new value is valid
if (newIndex > maxIndex) {
newIndex = maxIndex;
}
// Refresh first item id
if (items instanceof Container.Indexed) {
try {
currentPageFirstItemId = getIdByIndex(newIndex);
} catch (final IndexOutOfBoundsException e) {
currentPageFirstItemId = null;
}
currentPageFirstItemIndex = newIndex;
} else {
// For containers not supporting indexes, we must iterate the
// container forwards / backwards
// next available item forward or backward
currentPageFirstItemId = firstItemId();
// Go forwards in the middle of the list (respect borders)
while (currentPageFirstItemIndex < newIndex
&& !isLastId(currentPageFirstItemId)) {
currentPageFirstItemIndex++;
currentPageFirstItemId = nextItemId(currentPageFirstItemId);
}
// If we did hit the border
if (isLastId(currentPageFirstItemId)) {
currentPageFirstItemIndex = size - 1;
}
// Go backwards in the middle of the list (respect borders)
while (currentPageFirstItemIndex > newIndex
&& !isFirstId(currentPageFirstItemId)) {
currentPageFirstItemIndex--;
currentPageFirstItemId = prevItemId(currentPageFirstItemId);
}
// If we did hit the border
if (isFirstId(currentPageFirstItemId)) {
currentPageFirstItemIndex = 0;
}
// Go forwards once more
while (currentPageFirstItemIndex < newIndex
&& !isLastId(currentPageFirstItemId)) {
currentPageFirstItemIndex++;
currentPageFirstItemId = nextItemId(currentPageFirstItemId);
}
// If for some reason we do hit border again, override
// the user index request
if (isLastId(currentPageFirstItemId)) {
newIndex = currentPageFirstItemIndex = size - 1;
}
}
if (needsPageBufferReset) {
// Assures the visual refresh
resetPageBuffer();
refreshRenderedCells();
}
}
/**
* Setter for property currentPageFirstItem.
*
* @param newIndex
* the New value of property currentPageFirstItem.
*/
public void setCurrentPageFirstItemIndex(int newIndex) {
setCurrentPageFirstItemIndex(newIndex, true);
}
/**
* Getter for property pageBuffering.
*
* @deprecated functionality is not needed in ajax rendering model
*
* @return the Value of property pageBuffering.
*/
@Deprecated
public boolean isPageBufferingEnabled() {
return true;
}
/**
* Setter for property pageBuffering.
*
* @deprecated functionality is not needed in ajax rendering model
*
* @param pageBuffering
* the New value of property pageBuffering.
*/
@Deprecated
public void setPageBufferingEnabled(boolean pageBuffering) {
}
/**
* Getter for property selectable.
*
* <p>
* The table is not selectable by default.
* </p>
*
* @return the Value of property selectable.
*/
public boolean isSelectable() {
return selectable;
}
/**
* Setter for property selectable.
*
* <p>
* The table is not selectable by default.
* </p>
*
* @param selectable
* the New value of property selectable.
*/
public void setSelectable(boolean selectable) {
if (this.selectable != selectable) {
this.selectable = selectable;
requestRepaint();
}
}
/**
* Getter for property columnHeaderMode.
*
* @return the Value of property columnHeaderMode.
*/
public int getColumnHeaderMode() {
return columnHeaderMode;
}
/**
* Setter for property columnHeaderMode.
*
* @param columnHeaderMode
* the New value of property columnHeaderMode.
*/
public void setColumnHeaderMode(int columnHeaderMode) {
if (columnHeaderMode >= COLUMN_HEADER_MODE_HIDDEN
&& columnHeaderMode <= COLUMN_HEADER_MODE_EXPLICIT_DEFAULTS_ID) {
this.columnHeaderMode = columnHeaderMode;
}
// Assures the visual refresh
refreshRenderedCells();
}
/**
* Refreshes rendered rows
*/
protected void refreshRenderedCells() {
if (getParent() == null) {
return;
}
if (isContentRefreshesEnabled) {
HashSet<Property> oldListenedProperties = listenedProperties;
HashSet<Component> oldVisibleComponents = visibleComponents;
// initialize the listener collections
listenedProperties = new HashSet<Property>();
visibleComponents = new HashSet<Component>();
// Collects the basic facts about the table page
final Object[] colids = getVisibleColumns();
final int cols = colids.length;
final int pagelen = getPageLength();
int firstIndex = getCurrentPageFirstItemIndex();
int rows, totalRows;
rows = totalRows = size();
if (rows > 0 && firstIndex >= 0) {
rows -= firstIndex;
}
if (pagelen > 0 && pagelen < rows) {
rows = pagelen;
}
// If "to be painted next" variables are set, use them
if (lastToBeRenderedInClient - firstToBeRenderedInClient > 0) {
rows = lastToBeRenderedInClient - firstToBeRenderedInClient + 1;
}
Object id;
if (firstToBeRenderedInClient >= 0) {
if (firstToBeRenderedInClient < totalRows) {
firstIndex = firstToBeRenderedInClient;
} else {
firstIndex = totalRows - 1;
}
} else {
// initial load
firstToBeRenderedInClient = firstIndex;
}
if (totalRows > 0) {
if (rows + firstIndex > totalRows) {
rows = totalRows - firstIndex;
}
} else {
rows = 0;
}
Object[][] cells = new Object[cols + CELL_FIRSTCOL][rows];
if (rows == 0) {
pageBuffer = cells;
unregisterPropertiesAndComponents(oldListenedProperties,
oldVisibleComponents);
/*
* We need to repaint so possible header or footer changes are
* sent to the server
*/
requestRepaint();
return;
}
// Gets the first item id
if (items instanceof Container.Indexed) {
id = getIdByIndex(firstIndex);
} else {
id = firstItemId();
for (int i = 0; i < firstIndex; i++) {
id = nextItemId(id);
}
}
final int headmode = getRowHeaderMode();
final boolean[] iscomponent = new boolean[cols];
for (int i = 0; i < cols; i++) {
iscomponent[i] = columnGenerators.containsKey(colids[i])
|| Component.class.isAssignableFrom(getType(colids[i]));
}
int firstIndexNotInCache;
if (pageBuffer != null && pageBuffer[CELL_ITEMID].length > 0) {
firstIndexNotInCache = pageBufferFirstIndex
+ pageBuffer[CELL_ITEMID].length;
} else {
firstIndexNotInCache = -1;
}
// Creates the page contents
int filledRows = 0;
for (int i = 0; i < rows && id != null; i++) {
cells[CELL_ITEMID][i] = id;
cells[CELL_KEY][i] = itemIdMapper.key(id);
if (headmode != ROW_HEADER_MODE_HIDDEN) {
switch (headmode) {
case ROW_HEADER_MODE_INDEX:
cells[CELL_HEADER][i] = String.valueOf(i + firstIndex
+ 1);
break;
default:
cells[CELL_HEADER][i] = getItemCaption(id);
}
cells[CELL_ICON][i] = getItemIcon(id);
}
if (cols > 0) {
for (int j = 0; j < cols; j++) {
if (isColumnCollapsed(colids[j])) {
continue;
}
Property p = null;
Object value = "";
boolean isGenerated = columnGenerators
.containsKey(colids[j]);
if (!isGenerated) {
p = getContainerProperty(id, colids[j]);
}
// check in current pageBuffer already has row
int index = firstIndex + i;
if (p != null || isGenerated) {
if (index < firstIndexNotInCache
&& index >= pageBufferFirstIndex) {
// we have data already in our cache,
// recycle it instead of fetching it via
// getValue/getPropertyValue
int indexInOldBuffer = index
- pageBufferFirstIndex;
value = pageBuffer[CELL_FIRSTCOL + j][indexInOldBuffer];
if (!isGenerated && iscomponent[j]
|| !(value instanceof Component)) {
listenProperty(p, oldListenedProperties);
}
} else {
if (isGenerated) {
ColumnGenerator cg = columnGenerators
.get(colids[j]);
value = cg
.generateCell(this, id, colids[j]);
} else if (iscomponent[j]) {
value = p.getValue();
listenProperty(p, oldListenedProperties);
} else if (p != null) {
value = getPropertyValue(id, colids[j], p);
/*
* If returned value is Component (via
* fieldfactory or overridden
* getPropertyValue) we excpect it to listen
* property value changes. Otherwise if
* property emits value change events, table
* will start to listen them and refresh
* content when needed.
*/
if (!(value instanceof Component)) {
listenProperty(p, oldListenedProperties);
}
} else {
value = getPropertyValue(id, colids[j],
null);
}
}
}
if (value instanceof Component) {
if (oldVisibleComponents == null
|| !oldVisibleComponents.contains(value)) {
((Component) value).setParent(this);
}
visibleComponents.add((Component) value);
}
cells[CELL_FIRSTCOL + j][i] = value;
}
}
// Gets the next item id
if (items instanceof Container.Indexed) {
int index = firstIndex + i + 1;
if (index < totalRows) {
id = getIdByIndex(index);
} else {
id = null;
}
} else {
id = nextItemId(id);
}
filledRows++;
}
// Assures that all the rows of the cell-buffer are valid
if (filledRows != cells[0].length) {
final Object[][] temp = new Object[cells.length][filledRows];
for (int i = 0; i < cells.length; i++) {
for (int j = 0; j < filledRows; j++) {
temp[i][j] = cells[i][j];
}
}
cells = temp;
}
pageBufferFirstIndex = firstIndex;
// Saves the results to internal buffer
pageBuffer = cells;
unregisterPropertiesAndComponents(oldListenedProperties,
oldVisibleComponents);
requestRepaint();
}
}
private void listenProperty(Property p,
HashSet<Property> oldListenedProperties) {
if (p instanceof Property.ValueChangeNotifier) {
if (oldListenedProperties == null
|| !oldListenedProperties.contains(p)) {
((Property.ValueChangeNotifier) p).addListener(this);
}
/*
* register listened properties, so we can do proper cleanup to free
* memory. Essential if table has loads of data and it is used for a
* long time.
*/
listenedProperties.add(p);
}
}
/**
* Helper method to remove listeners and maintain correct component
* hierarchy. Detaches properties and components if those are no more
* rendered in client.
*
* @param oldListenedProperties
* set of properties that where listened in last render
* @param oldVisibleComponents
* set of components that where attached in last render
*/
private void unregisterPropertiesAndComponents(
HashSet<Property> oldListenedProperties,
HashSet<Component> oldVisibleComponents) {
if (oldVisibleComponents != null) {
for (final Iterator<Component> i = oldVisibleComponents.iterator(); i
.hasNext();) {
Component c = i.next();
if (!visibleComponents.contains(c)) {
unregisterComponent(c);
}
}
}
if (oldListenedProperties != null) {
for (final Iterator<Property> i = oldListenedProperties.iterator(); i
.hasNext();) {
Property.ValueChangeNotifier o = (ValueChangeNotifier) i.next();
if (!listenedProperties.contains(o)) {
o.removeListener(this);
}
}
}
}
/**
* This method cleans up a Component that has been generated when Table is
* in editable mode. The component needs to be detached from its parent and
* if it is a field, it needs to be detached from its property data source
* in order to allow garbage collection to take care of removing the unused
* component from memory.
*
* Override this method and getPropertyValue(Object, Object, Property) with
* custom logic if you need to deal with buffered fields.
*
* @see #getPropertyValue(Object, Object, Property)
*
* @param oldVisibleComponents
* a set of components that should be unregistered.
*/
protected void unregisterComponent(Component component) {
component.setParent(null);
/*
* Also remove property data sources to unregister listeners keeping the
* fields in memory.
*/
if (component instanceof Field) {
((Field) component).setPropertyDataSource(null);
}
}
/**
* Refreshes the current page contents.
*
* @deprecated should not need to be used
*/
@Deprecated
public void refreshCurrentPage() {
}
/**
* Sets the row header mode.
* <p>
* The mode can be one of the following ones:
* <ul>
* <li>{@link #ROW_HEADER_MODE_HIDDEN}: The row captions are hidden.</li>
* <li>{@link #ROW_HEADER_MODE_ID}: Items Id-objects <code>toString()</code>
* is used as row caption.
* <li>{@link #ROW_HEADER_MODE_ITEM}: Item-objects <code>toString()</code>
* is used as row caption.
* <li>{@link #ROW_HEADER_MODE_PROPERTY}: Property set with
* {@link #setItemCaptionPropertyId(Object)} is used as row header.
* <li>{@link #ROW_HEADER_MODE_EXPLICIT_DEFAULTS_ID}: Items Id-objects
* <code>toString()</code> is used as row header. If caption is explicitly
* specified, it overrides the id-caption.
* <li>{@link #ROW_HEADER_MODE_EXPLICIT}: The row headers must be explicitly
* specified.</li>
* <li>{@link #ROW_HEADER_MODE_INDEX}: The index of the item is used as row
* caption. The index mode can only be used with the containers implementing
* <code>Container.Indexed</code> interface.</li>
* </ul>
* The default value is {@link #ROW_HEADER_MODE_HIDDEN}
* </p>
*
* @param mode
* the One of the modes listed above.
*/
public void setRowHeaderMode(int mode) {
if (ROW_HEADER_MODE_HIDDEN == mode) {
rowCaptionsAreHidden = true;
} else {
rowCaptionsAreHidden = false;
setItemCaptionMode(mode);
}
// Assure visual refresh
refreshRenderedCells();
}
/**
* Gets the row header mode.
*
* @return the Row header mode.
* @see #setRowHeaderMode(int)
*/
public int getRowHeaderMode() {
return rowCaptionsAreHidden ? ROW_HEADER_MODE_HIDDEN
: getItemCaptionMode();
}
/**
* Adds the new row to table and fill the visible cells (except generated
* columns) with given values.
*
* @param cells
* the Object array that is used for filling the visible cells
* new row. The types must be settable to visible column property
* types.
* @param itemId
* the Id the new row. If null, a new id is automatically
* assigned. If given, the table cant already have a item with
* given id.
* @return Returns item id for the new row. Returns null if operation fails.
*/
public Object addItem(Object[] cells, Object itemId)
throws UnsupportedOperationException {
// remove generated columns from the list of columns being assigned
final LinkedList<Object> availableCols = new LinkedList<Object>();
for (Iterator<Object> it = visibleColumns.iterator(); it.hasNext();) {
Object id = it.next();
if (!columnGenerators.containsKey(id)) {
availableCols.add(id);
}
}
// Checks that a correct number of cells are given
if (cells.length != availableCols.size()) {
return null;
}
// Creates new item
Item item;
if (itemId == null) {
itemId = items.addItem();
if (itemId == null) {
return null;
}
item = items.getItem(itemId);
} else {
item = items.addItem(itemId);
}
if (item == null) {
return null;
}
// Fills the item properties
for (int i = 0; i < availableCols.size(); i++) {
item.getItemProperty(availableCols.get(i)).setValue(cells[i]);
}
if (!(items instanceof Container.ItemSetChangeNotifier)) {
resetPageBuffer();
refreshRenderedCells();
}
return itemId;
}
/* Overriding select behavior */
@Override
public void setValue(Object newValue) throws ReadOnlyException,
ConversionException {
// external selection change, need to truncate pageBuffer
resetPageBuffer();
refreshRenderedCells();
super.setValue(newValue);
}
@Override
public void setContainerDataSource(Container newDataSource) {
disableContentRefreshing();
if (newDataSource == null) {
newDataSource = new IndexedContainer();
}
// Assures that the data source is ordered by making unordered
// containers ordered by wrapping them
if (newDataSource instanceof Container.Ordered) {
super.setContainerDataSource(newDataSource);
} else {
super.setContainerDataSource(new ContainerOrderedWrapper(
newDataSource));
}
// Resets page position
currentPageFirstItemId = null;
currentPageFirstItemIndex = 0;
// Resets column properties
if (collapsedColumns != null) {
collapsedColumns.clear();
}
// columnGenerators 'override' properties, don't add the same id twice
Collection<Object> col = new LinkedList<Object>();
for (Iterator<?> it = getContainerPropertyIds().iterator(); it
.hasNext();) {
Object id = it.next();
if (columnGenerators == null || !columnGenerators.containsKey(id)) {
col.add(id);
}
}
// generators added last
if (columnGenerators != null && columnGenerators.size() > 0) {
col.addAll(columnGenerators.keySet());
}
setVisibleColumns(col.toArray());
// Assure visual refresh
resetPageBuffer();
enableContentRefreshing(true);
}
/**
* Gets items ids from a range of key values
*
* @param startRowKey
* The start key
* @param endRowKey
* The end key
* @return
*/
private Set<Object> getItemIdsInRange(Object itemId, final int length) {
HashSet<Object> ids = new HashSet<Object>();
for (int i = 0; i < length; i++) {
assert itemId != null; // should not be null unless client-server
// are out of sync
ids.add(itemId);
itemId = nextItemId(itemId);
}
return ids;
}
/**
* Handles selection if selection is a multiselection
*
* @param variables
* The variables
*/
private void handleSelectedItems(Map<String, Object> variables) {
final String[] ka = (String[]) variables.get("selected");
final String[] ranges = (String[]) variables.get("selectedRanges");
Set<Object> renderedItemIds = getCurrentlyRenderedItemIds();
@SuppressWarnings("unchecked")
HashSet<Object> newValue = new HashSet<Object>(
(Collection<Object>) getValue());
if (variables.containsKey("clearSelections")) {
// the client side has instructed to swipe all previous selections
newValue.clear();
} else {
/*
* first clear all selections that are currently rendered rows (the
* ones that the client side counterpart is aware of)
*/
newValue.removeAll(renderedItemIds);
}
/*
* Then add (possibly some of them back) rows that are currently
* selected on the client side (the ones that the client side is aware
* of).
*/
for (int i = 0; i < ka.length; i++) {
// key to id
final Object id = itemIdMapper.get(ka[i]);
if (!isNullSelectionAllowed()
&& (id == null || id == getNullSelectionItemId())) {
// skip empty selection if nullselection is not allowed
requestRepaint();
} else if (id != null && containsId(id)) {
newValue.add(id);
}
}
/* Add range items aka shift clicked multiselection areas */
if (ranges != null) {
for (String range : ranges) {
String[] split = range.split("-");
Object startItemId = itemIdMapper.get(split[0]);
int length = Integer.valueOf(split[1]);
newValue.addAll(getItemIdsInRange(startItemId, length));
}
}
if (!isNullSelectionAllowed() && newValue.isEmpty()) {
// empty selection not allowed, keep old value
requestRepaint();
return;
}
setValue(newValue, true);
}
private Set<Object> getCurrentlyRenderedItemIds() {
HashSet<Object> ids = new HashSet<Object>();
if (pageBuffer != null) {
for (int i = 0; i < pageBuffer[CELL_ITEMID].length; i++) {
ids.add(pageBuffer[CELL_ITEMID][i]);
}
}
return ids;
}
/* Component basics */
/**
* Invoked when the value of a variable has changed.
*
* @see com.vaadin.ui.Select#changeVariables(java.lang.Object,
* java.util.Map)
*/
@Override
public void changeVariables(Object source, Map<String, Object> variables) {
boolean clientNeedsContentRefresh = false;
handleClickEvent(variables);
handleColumnResizeEvent(variables);
disableContentRefreshing();
if (!isSelectable() && variables.containsKey("selected")) {
// Not-selectable is a special case, AbstractSelect does not support
// TODO could be optimized.
variables = new HashMap<String, Object>(variables);
variables.remove("selected");
}
/*
* The AbstractSelect cannot handle the multiselection properly, instead
* we handle it ourself
*/
else if (isSelectable() && isMultiSelect()
&& variables.containsKey("selected")
&& multiSelectMode == MultiSelectMode.DEFAULT) {
handleSelectedItems(variables);
variables = new HashMap<String, Object>(variables);
variables.remove("selected");
}
super.changeVariables(source, variables);
// Client might update the pagelength if Table height is fixed
if (variables.containsKey("pagelength")) {
// Sets pageLength directly to avoid repaint that setter causes
pageLength = (Integer) variables.get("pagelength");
}
// Page start index
if (variables.containsKey("firstvisible")) {
final Integer value = (Integer) variables.get("firstvisible");
if (value != null) {
setCurrentPageFirstItemIndex(value.intValue(), false);
}
}
// Sets requested firstrow and rows for the next paint
if (variables.containsKey("reqfirstrow")
|| variables.containsKey("reqrows")) {
try {
firstToBeRenderedInClient = ((Integer) variables
.get("firstToBeRendered")).intValue();
lastToBeRenderedInClient = ((Integer) variables
.get("lastToBeRendered")).intValue();
} catch (Exception e) {
// FIXME: Handle exception
logger.log(Level.FINER,
"Could not parse the first and/or last rows.", e);
}
// respect suggested rows only if table is not otherwise updated
// (row caches emptied by other event)
if (!containerChangeToBeRendered) {
Integer value = (Integer) variables.get("reqfirstrow");
if (value != null) {
reqFirstRowToPaint = value.intValue();
}
value = (Integer) variables.get("reqrows");
if (value != null) {
reqRowsToPaint = value.intValue();
// sanity check
if (reqFirstRowToPaint + reqRowsToPaint > size()) {
reqRowsToPaint = size() - reqFirstRowToPaint;
}
}
}
clientNeedsContentRefresh = true;
}
if (!sortDisabled) {
// Sorting
boolean doSort = false;
if (variables.containsKey("sortcolumn")) {
final String colId = (String) variables.get("sortcolumn");
if (colId != null && !"".equals(colId) && !"null".equals(colId)) {
final Object id = columnIdMap.get(colId);
setSortContainerPropertyId(id, false);
doSort = true;
}
}
if (variables.containsKey("sortascending")) {
final boolean state = ((Boolean) variables.get("sortascending"))
.booleanValue();
if (state != sortAscending) {
setSortAscending(state, false);
doSort = true;
}
}
if (doSort) {
this.sort();
resetPageBuffer();
}
}
// Dynamic column hide/show and order
// Update visible columns
if (isColumnCollapsingAllowed()) {
if (variables.containsKey("collapsedcolumns")) {
try {
final Object[] ids = (Object[]) variables
.get("collapsedcolumns");
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext();) {
setColumnCollapsed(it.next(), false);
}
for (int i = 0; i < ids.length; i++) {
setColumnCollapsed(columnIdMap.get(ids[i].toString()),
true);
}
} catch (final Exception e) {
// FIXME: Handle exception
logger.log(Level.FINER,
"Could not determine column collapsing state", e);
}
clientNeedsContentRefresh = true;
}
}
if (isColumnReorderingAllowed()) {
if (variables.containsKey("columnorder")) {
try {
final Object[] ids = (Object[]) variables
.get("columnorder");
// need a real Object[], ids can be a String[]
final Object[] idsTemp = new Object[ids.length];
for (int i = 0; i < ids.length; i++) {
idsTemp[i] = columnIdMap.get(ids[i].toString());
}
setColumnOrder(idsTemp);
} catch (final Exception e) {
// FIXME: Handle exception
logger.log(Level.FINER,
"Could not determine column reordering state", e);
}
clientNeedsContentRefresh = true;
}
}
enableContentRefreshing(clientNeedsContentRefresh);
// Actions
if (variables.containsKey("action")) {
final StringTokenizer st = new StringTokenizer(
(String) variables.get("action"), ",");
if (st.countTokens() == 2) {
final Object itemId = itemIdMapper.get(st.nextToken());
final Action action = (Action) actionMapper.get(st.nextToken());
if (action != null && containsId(itemId)
&& actionHandlers != null) {
for (final Iterator<Handler> i = actionHandlers.iterator(); i
.hasNext();) {
(i.next()).handleAction(action, this, itemId);
}
}
}
}
}
/**
* Handles click event
*
* @param variables
*/
private void handleClickEvent(Map<String, Object> variables) {
// Item click event
if (variables.containsKey("clickEvent")) {
String key = (String) variables.get("clickedKey");
Object itemId = itemIdMapper.get(key);
Object propertyId = null;
String colkey = (String) variables.get("clickedColKey");
// click is not necessary on a property
if (colkey != null) {
propertyId = columnIdMap.get(colkey);
}
MouseEventDetails evt = MouseEventDetails
.deSerialize((String) variables.get("clickEvent"));
Item item = getItem(itemId);
if (item != null) {
fireEvent(new ItemClickEvent(this, item, itemId, propertyId,
evt));
}
}
// Header click event
else if (variables.containsKey("headerClickEvent")) {
MouseEventDetails details = MouseEventDetails
.deSerialize((String) variables.get("headerClickEvent"));
Object cid = variables.get("headerClickCID");
Object propertyId = null;
if (cid != null) {
propertyId = columnIdMap.get(cid.toString());
}
fireEvent(new HeaderClickEvent(this, propertyId, details));
}
// Footer click event
else if (variables.containsKey("footerClickEvent")) {
MouseEventDetails details = MouseEventDetails
.deSerialize((String) variables.get("footerClickEvent"));
Object cid = variables.get("footerClickCID");
Object propertyId = null;
if (cid != null) {
propertyId = columnIdMap.get(cid.toString());
}
fireEvent(new FooterClickEvent(this, propertyId, details));
}
}
/**
* Handles the column resize event sent by the client.
*
* @param variables
*/
private void handleColumnResizeEvent(Map<String, Object> variables) {
if (variables.containsKey("columnResizeEventColumn")) {
Object cid = variables.get("columnResizeEventColumn");
Object propertyId = null;
if (cid != null) {
propertyId = columnIdMap.get(cid.toString());
}
Object prev = variables.get("columnResizeEventPrev");
int previousWidth = -1;
if (prev != null) {
previousWidth = Integer.valueOf(prev.toString());
}
Object curr = variables.get("columnResizeEventCurr");
int currentWidth = -1;
if (curr != null) {
currentWidth = Integer.valueOf(curr.toString());
}
/*
* Update the sizes on the server side. If a column previously had a
* expand ratio and the user resized the column then the expand
* ratio will be turned into a static pixel size.
*/
setColumnWidth(propertyId, currentWidth);
fireEvent(new ColumnResizeEvent(this, propertyId, previousWidth,
currentWidth));
}
}
/**
* Go to mode where content updates are not done. This is due we want to
* bypass expensive content for some reason (like when we know we may have
* other content changes on their way).
*
* @return true if content refresh flag was enabled prior this call
*/
protected boolean disableContentRefreshing() {
boolean wasDisabled = isContentRefreshesEnabled;
isContentRefreshesEnabled = false;
return wasDisabled;
}
/**
* Go to mode where content content refreshing has effect.
*
* @param refreshContent
* true if content refresh needs to be done
*/
protected void enableContentRefreshing(boolean refreshContent) {
isContentRefreshesEnabled = true;
if (refreshContent) {
refreshRenderedCells();
// Ensure that client gets a response
requestRepaint();
}
}
/*
* (non-Javadoc)
*
* @see com.vaadin.ui.AbstractSelect#paintContent(com.vaadin.
* terminal.PaintTarget)
*/
@Override
public void paintContent(PaintTarget target) throws PaintException {
// The tab ordering number
if (getTabIndex() > 0) {
target.addAttribute("tabindex", getTabIndex());
}
if (dragMode != TableDragMode.NONE) {
target.addAttribute("dragmode", dragMode.ordinal());
}
if (multiSelectMode != MultiSelectMode.DEFAULT) {
target.addAttribute("multiselectmode", multiSelectMode.ordinal());
}
// Initialize temps
final Object[] colids = getVisibleColumns();
final int cols = colids.length;
final int first = getCurrentPageFirstItemIndex();
int total = size();
final int pagelen = getPageLength();
final int colHeadMode = getColumnHeaderMode();
final boolean colheads = colHeadMode != COLUMN_HEADER_MODE_HIDDEN;
final Object[][] cells = getVisibleCells();
final boolean iseditable = isEditable();
int rows;
if (reqRowsToPaint >= 0) {
rows = reqRowsToPaint;
} else {
rows = cells[0].length;
if (alwaysRecalculateColumnWidths) {
// TODO experimental feature for now: tell the client to
// recalculate column widths.
// We'll only do this for paints that do not originate from
// table scroll/cache requests (i.e when reqRowsToPaint<0)
target.addAttribute("recalcWidths", true);
}
}
if (!isNullSelectionAllowed() && getNullSelectionItemId() != null
&& containsId(getNullSelectionItemId())) {
total--;
rows--;
}
// selection support
LinkedList<String> selectedKeys = new LinkedList<String>();
if (isMultiSelect()) {
HashSet<?> sel = new HashSet<Object>((Set<?>) getValue());
Collection<?> vids = getVisibleItemIds();
for (Iterator<?> it = vids.iterator(); it.hasNext();) {
Object id = it.next();
if (sel.contains(id)) {
selectedKeys.add(itemIdMapper.key(id));
}
}
} else {
Object value = getValue();
if (value == null) {
value = getNullSelectionItemId();
}
if (value != null) {
selectedKeys.add(itemIdMapper.key(value));
}
}
// Table attributes
if (isSelectable()) {
target.addAttribute("selectmode", (isMultiSelect() ? "multi"
: "single"));
} else {
target.addAttribute("selectmode", "none");
}
if (cacheRate != CACHE_RATE_DEFAULT) {
target.addAttribute("cr", cacheRate);
}
target.addAttribute("cols", cols);
target.addAttribute("rows", rows);
if (!isNullSelectionAllowed()) {
target.addAttribute("nsa", false);
}
target.addAttribute("firstrow",
(reqFirstRowToPaint >= 0 ? reqFirstRowToPaint
: firstToBeRenderedInClient));
target.addAttribute("totalrows", total);
if (pagelen != 0) {
target.addAttribute("pagelength", pagelen);
}
if (colheads) {
target.addAttribute("colheaders", true);
}
if (getRowHeaderMode() != ROW_HEADER_MODE_HIDDEN) {
target.addAttribute("rowheaders", true);
}
target.addAttribute("colfooters", columnFootersVisible);
// Visible column order
final Collection<?> sortables = getSortableContainerPropertyIds();
final ArrayList<String> visibleColOrder = new ArrayList<String>();
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext();) {
final Object columnId = it.next();
if (!isColumnCollapsed(columnId)) {
visibleColOrder.add(columnIdMap.key(columnId));
}
}
target.addAttribute("vcolorder", visibleColOrder.toArray());
// Rows
final Set<Action> actionSet = new LinkedHashSet<Action>();
final boolean selectable = isSelectable();
final boolean[] iscomponent = new boolean[visibleColumns.size()];
int iscomponentIndex = 0;
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext() && iscomponentIndex < iscomponent.length;) {
final Object columnId = it.next();
if (columnGenerators.containsKey(columnId)) {
iscomponent[iscomponentIndex++] = true;
} else {
final Class<?> colType = getType(columnId);
iscomponent[iscomponentIndex++] = colType != null
&& Component.class.isAssignableFrom(colType);
}
}
target.startTag("rows");
// cells array contains all that are supposed to be visible on client,
// but we'll start from the one requested by client
int start = 0;
if (reqFirstRowToPaint != -1 && firstToBeRenderedInClient != -1) {
start = reqFirstRowToPaint - firstToBeRenderedInClient;
}
int end = cells[0].length;
if (reqRowsToPaint != -1) {
end = start + reqRowsToPaint;
}
// sanity check
if (lastToBeRenderedInClient != -1 && lastToBeRenderedInClient < end) {
end = lastToBeRenderedInClient + 1;
}
if (start > cells[CELL_ITEMID].length || start < 0) {
start = 0;
}
for (int indexInRowbuffer = start; indexInRowbuffer < end; indexInRowbuffer++) {
final Object itemId = cells[CELL_ITEMID][indexInRowbuffer];
if (!isNullSelectionAllowed() && getNullSelectionItemId() != null
&& itemId == getNullSelectionItemId()) {
// Remove null selection item if null selection is not allowed
continue;
}
paintRow(target, cells, iseditable, actionSet, iscomponent,
indexInRowbuffer, itemId);
}
target.endTag("rows");
// The select variable is only enabled if selectable
if (selectable) {
target.addVariable(this, "selected",
selectedKeys.toArray(new String[selectedKeys.size()]));
}
// The cursors are only shown on pageable table
if (first != 0 || getPageLength() > 0) {
target.addVariable(this, "firstvisible", first);
}
// Sorting
if (getContainerDataSource() instanceof Container.Sortable) {
target.addVariable(this, "sortcolumn",
columnIdMap.key(sortContainerPropertyId));
target.addVariable(this, "sortascending", sortAscending);
}
// Resets and paints "to be painted next" variables. Also reset
// pageBuffer
reqFirstRowToPaint = -1;
reqRowsToPaint = -1;
containerChangeToBeRendered = false;
target.addVariable(this, "reqrows", reqRowsToPaint);
target.addVariable(this, "reqfirstrow", reqFirstRowToPaint);
// Actions
if (!actionSet.isEmpty()) {
target.addVariable(this, "action", "");
target.startTag("actions");
for (final Iterator<Action> it = actionSet.iterator(); it.hasNext();) {
final Action a = it.next();
target.startTag("action");
if (a.getCaption() != null) {
target.addAttribute("caption", a.getCaption());
}
if (a.getIcon() != null) {
target.addAttribute("icon", a.getIcon());
}
target.addAttribute("key", actionMapper.key(a));
target.endTag("action");
}
target.endTag("actions");
}
if (columnReorderingAllowed) {
final String[] colorder = new String[visibleColumns.size()];
int i = 0;
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext() && i < colorder.length;) {
colorder[i++] = columnIdMap.key(it.next());
}
target.addVariable(this, "columnorder", colorder);
}
// Available columns
if (columnCollapsingAllowed) {
final HashSet<Object> ccs = new HashSet<Object>();
for (final Iterator<Object> i = visibleColumns.iterator(); i
.hasNext();) {
final Object o = i.next();
if (isColumnCollapsed(o)) {
ccs.add(o);
}
}
final String[] collapsedkeys = new String[ccs.size()];
int nextColumn = 0;
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext() && nextColumn < collapsedkeys.length;) {
final Object columnId = it.next();
if (isColumnCollapsed(columnId)) {
collapsedkeys[nextColumn++] = columnIdMap.key(columnId);
}
}
target.addVariable(this, "collapsedcolumns", collapsedkeys);
}
target.startTag("visiblecolumns");
int i = 0;
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext(); i++) {
final Object columnId = it.next();
if (columnId != null) {
target.startTag("column");
target.addAttribute("cid", columnIdMap.key(columnId));
final String head = getColumnHeader(columnId);
target.addAttribute("caption", (head != null ? head : ""));
final String foot = getColumnFooter(columnId);
target.addAttribute("fcaption", (foot != null ? foot : ""));
if (isColumnCollapsed(columnId)) {
target.addAttribute("collapsed", true);
}
if (colheads) {
if (getColumnIcon(columnId) != null) {
target.addAttribute("icon", getColumnIcon(columnId));
}
if (sortables.contains(columnId)) {
target.addAttribute("sortable", true);
}
}
if (!ALIGN_LEFT.equals(getColumnAlignment(columnId))) {
target.addAttribute("align", getColumnAlignment(columnId));
}
if (columnWidths.containsKey(columnId)) {
if (getColumnWidth(columnId) > -1) {
target.addAttribute("width",
String.valueOf(getColumnWidth(columnId)));
} else {
target.addAttribute("er",
getColumnExpandRatio(columnId));
}
}
target.endTag("column");
}
}
target.endTag("visiblecolumns");
if (dropHandler != null) {
dropHandler.getAcceptCriterion().paint(target);
}
}
private void paintRow(PaintTarget target, final Object[][] cells,
final boolean iseditable, final Set<Action> actionSet,
final boolean[] iscomponent, int indexInRowbuffer,
final Object itemId) throws PaintException {
target.startTag("tr");
paintRowAttributes(target, cells, actionSet, indexInRowbuffer, itemId);
// cells
int currentColumn = 0;
for (final Iterator<Object> it = visibleColumns.iterator(); it
.hasNext(); currentColumn++) {
final Object columnId = it.next();
if (columnId == null || isColumnCollapsed(columnId)) {
continue;
}
/*
* For each cell, if a cellStyleGenerator is specified, get the
* specific style for the cell. If there is any, add it to the
* target.
*/
if (cellStyleGenerator != null) {
String cellStyle = cellStyleGenerator
.getStyle(itemId, columnId);
if (cellStyle != null && !cellStyle.equals("")) {
target.addAttribute("style-" + columnIdMap.key(columnId),
cellStyle);
}
}
if ((iscomponent[currentColumn] || iseditable)
&& Component.class.isInstance(cells[CELL_FIRSTCOL
+ currentColumn][indexInRowbuffer])) {
final Component c = (Component) cells[CELL_FIRSTCOL
+ currentColumn][indexInRowbuffer];
if (c == null) {
target.addText("");
} else {
c.paint(target);
}
} else {
target.addText((String) cells[CELL_FIRSTCOL + currentColumn][indexInRowbuffer]);
}
}
target.endTag("tr");
}
private void paintRowAttributes(PaintTarget target, final Object[][] cells,
final Set<Action> actionSet, int indexInRowbuffer,
final Object itemId) throws PaintException {
// tr attributes
paintRowIcon(target, cells, indexInRowbuffer);
paintRowHeader(target, cells, indexInRowbuffer);
target.addAttribute("key",
Integer.parseInt(cells[CELL_KEY][indexInRowbuffer].toString()));
if (isSelected(itemId)) {
target.addAttribute("selected", true);
}
// Actions
if (actionHandlers != null) {
final ArrayList<String> keys = new ArrayList<String>();
for (final Iterator<Handler> ahi = actionHandlers.iterator(); ahi
.hasNext();) {
final Action[] aa = (ahi.next()).getActions(itemId, this);
if (aa != null) {
for (int ai = 0; ai < aa.length; ai++) {
final String key = actionMapper.key(aa[ai]);
actionSet.add(aa[ai]);
keys.add(key);
}
}
}
target.addAttribute("al", keys.toArray());
}
/*
* For each row, if a cellStyleGenerator is specified, get the specific
* style for the cell, using null as propertyId. If there is any, add it
* to the target.
*/
if (cellStyleGenerator != null) {
String rowStyle = cellStyleGenerator.getStyle(itemId, null);
if (rowStyle != null && !rowStyle.equals("")) {
target.addAttribute("rowstyle", rowStyle);
}
}
paintRowAttributes(target, itemId);
}
protected void paintRowHeader(PaintTarget target, Object[][] cells,
int indexInRowbuffer) throws PaintException {
if (getRowHeaderMode() != ROW_HEADER_MODE_HIDDEN) {
if (cells[CELL_HEADER][indexInRowbuffer] != null) {
target.addAttribute("caption",
(String) cells[CELL_HEADER][indexInRowbuffer]);
}
}
}
protected void paintRowIcon(PaintTarget target, final Object[][] cells,
int indexInRowbuffer) throws PaintException {
if (getRowHeaderMode() != ROW_HEADER_MODE_HIDDEN
&& cells[CELL_ICON][indexInRowbuffer] != null) {
target.addAttribute("icon",
(Resource) cells[CELL_ICON][indexInRowbuffer]);
}
}
/**
* A method where extended Table implementations may add their custom
* attributes for rows.
*
* @param target
* @param itemId
*/
protected void paintRowAttributes(PaintTarget target, Object itemId)
throws PaintException {
}
/**
* Gets the cached visible table contents.
*
* @return the cached visible table contents.
*/
private Object[][] getVisibleCells() {
if (pageBuffer == null) {
refreshRenderedCells();
}
return pageBuffer;
}
/**
* Gets the value of property.
*
* By default if the table is editable the fieldFactory is used to create
* editors for table cells. Otherwise formatPropertyValue is used to format
* the value representation.
*
* @param rowId
* the Id of the row (same as item Id).
* @param colId
* the Id of the column.
* @param property
* the Property to be presented.
* @return Object Either formatted value or Component for field.
* @see #setTableFieldFactory(TableFieldFactory)
*/
protected Object getPropertyValue(Object rowId, Object colId,
Property property) {
if (isEditable() && fieldFactory != null) {
final Field f = fieldFactory.createField(getContainerDataSource(),
rowId, colId, this);
if (f != null) {
f.setPropertyDataSource(property);
return f;
}
}
return formatPropertyValue(rowId, colId, property);
}
/**
* Formats table cell property values. By default the property.toString()
* and return a empty string for null properties.
*
* @param rowId
* the Id of the row (same as item Id).
* @param colId
* the Id of the column.
* @param property
* the Property to be formatted.
* @return the String representation of property and its value.
* @since 3.1
*/
protected String formatPropertyValue(Object rowId, Object colId,
Property property) {
if (property == null) {
return "";
}
return property.toString();
}
/* Action container */
/**
* Registers a new action handler for this container
*
* @see com.vaadin.event.Action.Container#addActionHandler(Action.Handler)
*/
public void addActionHandler(Action.Handler actionHandler) {
if (actionHandler != null) {
if (actionHandlers == null) {
actionHandlers = new LinkedList<Handler>();
actionMapper = new KeyMapper();
}
if (!actionHandlers.contains(actionHandler)) {
actionHandlers.add(actionHandler);
requestRepaint();
}
}
}
/**
* Removes a previously registered action handler for the contents of this
* container.
*
* @see com.vaadin.event.Action.Container#removeActionHandler(Action.Handler)
*/
public void removeActionHandler(Action.Handler actionHandler) {
if (actionHandlers != null && actionHandlers.contains(actionHandler)) {
actionHandlers.remove(actionHandler);
if (actionHandlers.isEmpty()) {
actionHandlers = null;
actionMapper = null;
}
requestRepaint();
}
}
/**
* Removes all action handlers
*/
public void removeAllActionHandlers() {
actionHandlers = null;
actionMapper = null;
requestRepaint();
}
/* Property value change listening support */
/**
* Notifies this listener that the Property's value has changed.
*
* Also listens changes in rendered items to refresh content area.
*
* @see com.vaadin.data.Property.ValueChangeListener#valueChange(Property.ValueChangeEvent)
*/
@Override
public void valueChange(Property.ValueChangeEvent event) {
if (event.getProperty() == this) {
super.valueChange(event);
} else {
resetPageBuffer();
refreshRenderedCells();
containerChangeToBeRendered = true;
}
requestRepaint();
}
protected void resetPageBuffer() {
firstToBeRenderedInClient = -1;
lastToBeRenderedInClient = -1;
reqFirstRowToPaint = -1;
reqRowsToPaint = -1;
pageBuffer = null;
}
/**
* Notifies the component that it is connected to an application.
*
* @see com.vaadin.ui.Component#attach()
*/
@Override
public void attach() {
super.attach();
refreshRenderedCells();
if (visibleComponents != null) {
for (final Iterator<Component> i = visibleComponents.iterator(); i
.hasNext();) {
i.next().attach();
}
}
}
/**
* Notifies the component that it is detached from the application
*
* @see com.vaadin.ui.Component#detach()
*/
@Override
public void detach() {
super.detach();
if (visibleComponents != null) {
for (final Iterator<Component> i = visibleComponents.iterator(); i
.hasNext();) {
i.next().detach();
}
}
}
/**
* Removes all Items from the Container.
*
* @see com.vaadin.data.Container#removeAllItems()
*/
@Override
public boolean removeAllItems() {
currentPageFirstItemId = null;
currentPageFirstItemIndex = 0;
return super.removeAllItems();
}
/**
* Removes the Item identified by <code>ItemId</code> from the Container.
*
* @see com.vaadin.data.Container#removeItem(Object)
*/
@Override
public boolean removeItem(Object itemId) {
final Object nextItemId = nextItemId(itemId);
final boolean ret = super.removeItem(itemId);
if (ret && (itemId != null) && (itemId.equals(currentPageFirstItemId))) {
currentPageFirstItemId = nextItemId;
}
if (!(items instanceof Container.ItemSetChangeNotifier)) {
resetPageBuffer();
refreshRenderedCells();
}
return ret;
}
/**
* Removes a Property specified by the given Property ID from the Container.
*
* @see com.vaadin.data.Container#removeContainerProperty(Object)
*/
@Override
public boolean removeContainerProperty(Object propertyId)
throws UnsupportedOperationException {
// If a visible property is removed, remove the corresponding column
visibleColumns.remove(propertyId);
columnAlignments.remove(propertyId);
columnIcons.remove(propertyId);
columnHeaders.remove(propertyId);
columnFooters.remove(propertyId);
return super.removeContainerProperty(propertyId);
}
/**
* Adds a new property to the table and show it as a visible column.
*
* @param propertyId
* the Id of the proprty.
* @param type
* the class of the property.
* @param defaultValue
* the default value given for all existing items.
* @see com.vaadin.data.Container#addContainerProperty(Object, Class,
* Object)
*/
@Override
public boolean addContainerProperty(Object propertyId, Class<?> type,
Object defaultValue) throws UnsupportedOperationException {
boolean visibleColAdded = false;
if (!visibleColumns.contains(propertyId)) {
visibleColumns.add(propertyId);
visibleColAdded = true;
}
if (!super.addContainerProperty(propertyId, type, defaultValue)) {
if (visibleColAdded) {
visibleColumns.remove(propertyId);
}
return false;
}
if (!(items instanceof Container.PropertySetChangeNotifier)) {
resetPageBuffer();
refreshRenderedCells();
}
return true;
}
/**
* Adds a new property to the table and show it as a visible column.
*
* @param propertyId
* the Id of the proprty
* @param type
* the class of the property
* @param defaultValue
* the default value given for all existing items
* @param columnHeader
* the Explicit header of the column. If explicit header is not
* needed, this should be set null.
* @param columnIcon
* the Icon of the column. If icon is not needed, this should be
* set null.
* @param columnAlignment
* the Alignment of the column. Null implies align left.
* @throws UnsupportedOperationException
* if the operation is not supported.
* @see com.vaadin.data.Container#addContainerProperty(Object, Class,
* Object)
*/
public boolean addContainerProperty(Object propertyId, Class<?> type,
Object defaultValue, String columnHeader, Resource columnIcon,
String columnAlignment) throws UnsupportedOperationException {
if (!this.addContainerProperty(propertyId, type, defaultValue)) {
return false;
}
setColumnAlignment(propertyId, columnAlignment);
setColumnHeader(propertyId, columnHeader);
setColumnIcon(propertyId, columnIcon);
return true;
}
/**
* Adds a generated column to the Table.
* <p>
* A generated column is a column that exists only in the Table, not as a
* property in the underlying Container. It shows up just as a regular
* column.
* </p>
* <p>
* A generated column will override a property with the same id, so that the
* generated column is shown instead of the column representing the
* property. Note that getContainerProperty() will still get the real
* property.
* </p>
* <p>
* Table will not listen to value change events from properties overridden
* by generated columns. If the content of your generated column depends on
* properties that are not directly visible in the table, attach value
* change listener to update the content on all depended properties.
* Otherwise your UI might not get updated as expected.
* </p>
* <p>
* Also note that getVisibleColumns() will return the generated columns,
* while getContainerPropertyIds() will not.
* </p>
*
* @param id
* the id of the column to be added
* @param generatedColumn
* the {@link ColumnGenerator} to use for this column
*/
public void addGeneratedColumn(Object id, ColumnGenerator generatedColumn) {
if (generatedColumn == null) {
throw new IllegalArgumentException(
"Can not add null as a GeneratedColumn");
}
if (columnGenerators.containsKey(id)) {
throw new IllegalArgumentException(
"Can not add the same GeneratedColumn twice, id:" + id);
} else {
columnGenerators.put(id, generatedColumn);
/*
* add to visible column list unless already there (overriding
* column from DS)
*/
if (!visibleColumns.contains(id)) {
visibleColumns.add(id);
}
resetPageBuffer();
refreshRenderedCells();
}
}
/**
* Removes a generated column previously added with addGeneratedColumn.
*
* @param columnId
* id of the generated column to remove
* @return true if the column could be removed (existed in the Table)
*/
public boolean removeGeneratedColumn(Object columnId) {
if (columnGenerators.containsKey(columnId)) {
columnGenerators.remove(columnId);
// remove column from visibleColumns list unless it exists in
// container (generator previously overrode this column)
if (!items.getContainerPropertyIds().contains(columnId)) {
visibleColumns.remove(columnId);
}
resetPageBuffer();
refreshRenderedCells();
return true;
} else {
return false;
}
}
/**
* Returns the list of items on the current page
*
* @see com.vaadin.ui.Select#getVisibleItemIds()
*/
@Override
public Collection<?> getVisibleItemIds() {
final LinkedList<Object> visible = new LinkedList<Object>();
final Object[][] cells = getVisibleCells();
for (int i = 0; i < cells[CELL_ITEMID].length; i++) {
visible.add(cells[CELL_ITEMID][i]);
}
return visible;
}
/**
* Container datasource item set change. Table must flush its buffers on
* change.
*
* @see com.vaadin.data.Container.ItemSetChangeListener#containerItemSetChange(com.vaadin.data.Container.ItemSetChangeEvent)
*/
@Override
public void containerItemSetChange(Container.ItemSetChangeEvent event) {
super.containerItemSetChange(event);
if (event instanceof IndexedContainer.ItemSetChangeEvent) {
IndexedContainer.ItemSetChangeEvent evt = (IndexedContainer.ItemSetChangeEvent) event;
// if the event is not a global one and the added item is outside
// the visible/buffered area, no need to do anything
if (evt.getAddedItemIndex() != -1
&& (firstToBeRenderedInClient >= 0)
&& (lastToBeRenderedInClient >= 0)
&& (firstToBeRenderedInClient > evt.getAddedItemIndex() || lastToBeRenderedInClient < evt
.getAddedItemIndex())) {
return;
}
}
// ensure that page still has first item in page, ignore buffer refresh
// (forced in this method)
setCurrentPageFirstItemIndex(getCurrentPageFirstItemIndex(), false);
resetPageBuffer();
refreshRenderedCells();
}
/**
* Container datasource property set change. Table must flush its buffers on
* change.
*
* @see com.vaadin.data.Container.PropertySetChangeListener#containerPropertySetChange(com.vaadin.data.Container.PropertySetChangeEvent)
*/
@Override
public void containerPropertySetChange(
Container.PropertySetChangeEvent event) {
disableContentRefreshing();
super.containerPropertySetChange(event);
// sanitetize visibleColumns. note that we are not adding previously
// non-existing properties as columns
Collection<?> containerPropertyIds = getContainerDataSource()
.getContainerPropertyIds();
LinkedList<Object> newVisibleColumns = new LinkedList<Object>(
visibleColumns);
for (Iterator<Object> iterator = newVisibleColumns.iterator(); iterator
.hasNext();) {
Object id = iterator.next();
if (!(containerPropertyIds.contains(id) || columnGenerators
.containsKey(id))) {
iterator.remove();
}
}
setVisibleColumns(newVisibleColumns.toArray());
// same for collapsed columns
for (Iterator<Object> iterator = collapsedColumns.iterator(); iterator
.hasNext();) {
Object id = iterator.next();
if (!(containerPropertyIds.contains(id) || columnGenerators
.containsKey(id))) {
iterator.remove();
}
}
resetPageBuffer();
enableContentRefreshing(true);
}
/**
* Adding new items is not supported.
*
* @throws UnsupportedOperationException
* if set to true.
* @see com.vaadin.ui.Select#setNewItemsAllowed(boolean)
*/
@Override
public void setNewItemsAllowed(boolean allowNewOptions)
throws UnsupportedOperationException {
if (allowNewOptions) {
throw new UnsupportedOperationException();
}
}
/**
* Gets the ID of the Item following the Item that corresponds to itemId.
*
* @see com.vaadin.data.Container.Ordered#nextItemId(java.lang.Object)
*/
public Object nextItemId(Object itemId) {
return ((Container.Ordered) items).nextItemId(itemId);
}
/**
* Gets the ID of the Item preceding the Item that corresponds to the
* itemId.
*
* @see com.vaadin.data.Container.Ordered#prevItemId(java.lang.Object)
*/
public Object prevItemId(Object itemId) {
return ((Container.Ordered) items).prevItemId(itemId);
}
/**
* Gets the ID of the first Item in the Container.
*
* @see com.vaadin.data.Container.Ordered#firstItemId()
*/
public Object firstItemId() {
return ((Container.Ordered) items).firstItemId();
}
/**
* Gets the ID of the last Item in the Container.
*
* @see com.vaadin.data.Container.Ordered#lastItemId()
*/
public Object lastItemId() {
return ((Container.Ordered) items).lastItemId();
}
/**
* Tests if the Item corresponding to the given Item ID is the first Item in
* the Container.
*
* @see com.vaadin.data.Container.Ordered#isFirstId(java.lang.Object)
*/
public boolean isFirstId(Object itemId) {
return ((Container.Ordered) items).isFirstId(itemId);
}
/**
* Tests if the Item corresponding to the given Item ID is the last Item in
* the Container.
*
* @see com.vaadin.data.Container.Ordered#isLastId(java.lang.Object)
*/
public boolean isLastId(Object itemId) {
return ((Container.Ordered) items).isLastId(itemId);
}
/**
* Adds new item after the given item.
*
* @see com.vaadin.data.Container.Ordered#addItemAfter(java.lang.Object)
*/
public Object addItemAfter(Object previousItemId)
throws UnsupportedOperationException {
Object itemId = ((Container.Ordered) items)
.addItemAfter(previousItemId);
if (!(items instanceof Container.ItemSetChangeNotifier)) {
resetPageBuffer();
refreshRenderedCells();
}
return itemId;
}
/**
* Adds new item after the given item.
*
* @see com.vaadin.data.Container.Ordered#addItemAfter(java.lang.Object,
* java.lang.Object)
*/
public Item addItemAfter(Object previousItemId, Object newItemId)
throws UnsupportedOperationException {
Item item = ((Container.Ordered) items).addItemAfter(previousItemId,
newItemId);
if (!(items instanceof Container.ItemSetChangeNotifier)) {
resetPageBuffer();
refreshRenderedCells();
}
return item;
}
/**
* Sets the TableFieldFactory that is used to create editor for table cells.
*
* The TableFieldFactory is only used if the Table is editable. By default
* the DefaultFieldFactory is used.
*
* @param fieldFactory
* the field factory to set.
* @see #isEditable
* @see DefaultFieldFactory
*/
public void setTableFieldFactory(TableFieldFactory fieldFactory) {
this.fieldFactory = fieldFactory;
}
/**
* Gets the TableFieldFactory that is used to create editor for table cells.
*
* The FieldFactory is only used if the Table is editable.
*
* @return TableFieldFactory used to create the Field instances.
* @see #isEditable
*/
public TableFieldFactory getTableFieldFactory() {
return fieldFactory;
}
/**
* Gets the FieldFactory that is used to create editor for table cells.
*
* The FieldFactory is only used if the Table is editable.
*
* @return FieldFactory used to create the Field instances.
* @see #isEditable
* @deprecated use {@link #getTableFieldFactory()} instead
*/
@Deprecated
public FieldFactory getFieldFactory() {
if (fieldFactory instanceof FieldFactory) {
return (FieldFactory) fieldFactory;
}
return null;
}
/**
* Sets the FieldFactory that is used to create editor for table cells.
*
* The FieldFactory is only used if the Table is editable. By default the
* BaseFieldFactory is used.
*
* @param fieldFactory
* the field factory to set.
* @see #isEditable
* @see BaseFieldFactory
* @deprecated use {@link #setTableFieldFactory(TableFieldFactory)} instead
*/
@Deprecated
public void setFieldFactory(FieldFactory fieldFactory) {
this.fieldFactory = fieldFactory;
// Assure visual refresh
resetPageBuffer();
refreshRenderedCells();
}
/**
* Is table editable.
*
* If table is editable a editor of type Field is created for each table
* cell. The assigned FieldFactory is used to create the instances.
*
* To provide custom editors for table cells create a class implementins the
* FieldFactory interface, and assign it to table, and set the editable
* property to true.
*
* @return true if table is editable, false oterwise.
* @see Field
* @see FieldFactory
*
*/
public boolean isEditable() {
return editable;
}
/**
* Sets the editable property.
*
* If table is editable a editor of type Field is created for each table
* cell. The assigned FieldFactory is used to create the instances.
*
* To provide custom editors for table cells create a class implementins the
* FieldFactory interface, and assign it to table, and set the editable
* property to true.
*
* @param editable
* true if table should be editable by user.
* @see Field
* @see FieldFactory
*
*/
public void setEditable(boolean editable) {
this.editable = editable;
// Assure visual refresh
resetPageBuffer();
refreshRenderedCells();
}
/**
* Sorts the table.
*
* @throws UnsupportedOperationException
* if the container data source does not implement
* Container.Sortable
* @see com.vaadin.data.Container.Sortable#sort(java.lang.Object[],
* boolean[])
*
*/
public void sort(Object[] propertyId, boolean[] ascending)
throws UnsupportedOperationException {
final Container c = getContainerDataSource();
if (c instanceof Container.Sortable) {
final int pageIndex = getCurrentPageFirstItemIndex();
((Container.Sortable) c).sort(propertyId, ascending);
setCurrentPageFirstItemIndex(pageIndex);
resetPageBuffer();
refreshRenderedCells();
} else if (c != null) {
throw new UnsupportedOperationException(
"Underlying Data does not allow sorting");
}
}
/**
* Sorts the table by currently selected sorting column.
*
* @throws UnsupportedOperationException
* if the container data source does not implement
* Container.Sortable
*/
public void sort() {
if (getSortContainerPropertyId() == null) {
return;
}
sort(new Object[] { sortContainerPropertyId },
new boolean[] { sortAscending });
}
/**
* Gets the container property IDs, which can be used to sort the item.
*
* @see com.vaadin.data.Container.Sortable#getSortableContainerPropertyIds()
*/
public Collection<?> getSortableContainerPropertyIds() {
final Container c = getContainerDataSource();
if (c instanceof Container.Sortable && !isSortDisabled()) {
return ((Container.Sortable) c).getSortableContainerPropertyIds();
} else {
return new LinkedList<Object>();
}
}
/**
* Gets the currently sorted column property ID.
*
* @return the Container property id of the currently sorted column.
*/
public Object getSortContainerPropertyId() {
return sortContainerPropertyId;
}
/**
* Sets the currently sorted column property id.
*
* @param propertyId
* the Container property id of the currently sorted column.
*/
public void setSortContainerPropertyId(Object propertyId) {
setSortContainerPropertyId(propertyId, true);
}
/**
* Internal method to set currently sorted column property id. With doSort
* flag actual sorting may be bypassed.
*
* @param propertyId
* @param doSort
*/
private void setSortContainerPropertyId(Object propertyId, boolean doSort) {
if ((sortContainerPropertyId != null && !sortContainerPropertyId
.equals(propertyId))
|| (sortContainerPropertyId == null && propertyId != null)) {
sortContainerPropertyId = propertyId;
if (doSort) {
sort();
// Assures the visual refresh
refreshRenderedCells();
}
}
}
/**
* Is the table currently sorted in ascending order.
*
* @return <code>true</code> if ascending, <code>false</code> if descending.
*/
public boolean isSortAscending() {
return sortAscending;
}
/**
* Sets the table in ascending order.
*
* @param ascending
* <code>true</code> if ascending, <code>false</code> if
* descending.
*/
public void setSortAscending(boolean ascending) {
setSortAscending(ascending, true);
}
/**
* Internal method to set sort ascending. With doSort flag actual sort can
* be bypassed.
*
* @param ascending
* @param doSort
*/
private void setSortAscending(boolean ascending, boolean doSort) {
if (sortAscending != ascending) {
sortAscending = ascending;
if (doSort) {
sort();
}
}
// Assures the visual refresh
refreshRenderedCells();
}
/**
* Is sorting disabled altogether.
*
* True iff no sortable columns are given even in the case where data source
* would support this.
*
* @return True iff sorting is disabled.
*/
public boolean isSortDisabled() {
return sortDisabled;
}
/**
* Disables the sorting altogether.
*
* To disable sorting altogether, set to true. In this case no sortable
* columns are given even in the case where datasource would support this.
*
* @param sortDisabled
* True iff sorting is disabled.
*/
public void setSortDisabled(boolean sortDisabled) {
if (this.sortDisabled != sortDisabled) {
this.sortDisabled = sortDisabled;
refreshRenderedCells();
}
}
/**
* Table does not support lazy options loading mode. Setting this true will
* throw UnsupportedOperationException.
*
* @see com.vaadin.ui.Select#setLazyLoading(boolean)
*/
public void setLazyLoading(boolean useLazyLoading) {
if (useLazyLoading) {
throw new UnsupportedOperationException(
"Lazy options loading is not supported by Table.");
}
}
/**
* Used to create "generated columns"; columns that exist only in the Table,
* not in the underlying Container. Implement this interface and pass it to
* Table.addGeneratedColumn along with an id for the column to be generated.
*
*/
public interface ColumnGenerator extends Serializable {
/**
* Called by Table when a cell in a generated column needs to be
* generated.
*
* @param source
* the source Table
* @param itemId
* the itemId (aka rowId) for the of the cell to be generated
* @param columnId
* the id for the generated column (as specified in
* addGeneratedColumn)
* @return
*/
public abstract Component generateCell(Table source, Object itemId,
Object columnId);
}
/**
* Set cell style generator for Table.
*
* @param cellStyleGenerator
* New cell style generator or null to remove generator.
*/
public void setCellStyleGenerator(CellStyleGenerator cellStyleGenerator) {
this.cellStyleGenerator = cellStyleGenerator;
requestRepaint();
}
/**
* Get the current cell style generator.
*
*/
public CellStyleGenerator getCellStyleGenerator() {
return cellStyleGenerator;
}
/**
* Allow to define specific style on cells (and rows) contents. Implements
* this interface and pass it to Table.setCellStyleGenerator. Row styles are
* generated when porpertyId is null. The CSS class name that will be added
* to the cell content is <tt>v-table-cell-content-[style name]</tt>, and
* the row style will be <tt>v-table-row-[style name]</tt>.
*/
public interface CellStyleGenerator extends Serializable {
/**
* Called by Table when a cell (and row) is painted.
*
* @param itemId
* The itemId of the painted cell
* @param propertyId
* The propertyId of the cell, null when getting row style
* @return The style name to add to this cell or row. (the CSS class
* name will be v-table-cell-content-[style name], or
* v-table-row-[style name] for rows)
*/
public abstract String getStyle(Object itemId, Object propertyId);
}
public void addListener(ItemClickListener listener) {
addListener(VScrollTable.ITEM_CLICK_EVENT_ID, ItemClickEvent.class,
listener, ItemClickEvent.ITEM_CLICK_METHOD);
}
public void removeListener(ItemClickListener listener) {
removeListener(VScrollTable.ITEM_CLICK_EVENT_ID, ItemClickEvent.class,
listener);
}
// Identical to AbstractCompoenentContainer.setEnabled();
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
if (getParent() != null && !getParent().isEnabled()) {
// some ancestor still disabled, don't update children
return;
} else {
requestRepaintAll();
}
}
// Virtually identical to AbstractCompoenentContainer.setEnabled();
public void requestRepaintAll() {
requestRepaint();
if (visibleComponents != null) {
for (Iterator<Component> childIterator = visibleComponents
.iterator(); childIterator.hasNext();) {
Component c = childIterator.next();
if (c instanceof Form) {
// Form has children in layout, but is not
// ComponentContainer
c.requestRepaint();
((Form) c).getLayout().requestRepaintAll();
} else if (c instanceof Table) {
((Table) c).requestRepaintAll();
} else if (c instanceof ComponentContainer) {
((ComponentContainer) c).requestRepaintAll();
} else {
c.requestRepaint();
}
}
}
}
/**
* Sets the drag start mode of the Table. Drag start mode controls how Table
* behaves as a drag source.
*
* @param newDragMode
*/
public void setDragMode(TableDragMode newDragMode) {
dragMode = newDragMode;
requestRepaint();
}
/**
* @return the current start mode of the Table. Drag start mode controls how
* Table behaves as a drag source.
*/
public TableDragMode getDragMode() {
return dragMode;
}
/**
* Concrete implementation of {@link DataBoundTransferable} for data
* transferred from a table.
*
* @see {@link DataBoundTransferable}.
*
* @since 6.3
*/
public class TableTransferable extends DataBoundTransferable {
protected TableTransferable(Map<String, Object> rawVariables) {
super(Table.this, rawVariables);
Object object = rawVariables.get("itemId");
if (object != null) {
setData("itemId", itemIdMapper.get((String) object));
}
object = rawVariables.get("propertyId");
if (object != null) {
setData("propertyId", columnIdMap.get((String) object));
}
}
@Override
public Object getItemId() {
return getData("itemId");
}
@Override
public Object getPropertyId() {
return getData("propertyId");
}
@Override
public Table getSourceComponent() {
return (Table) super.getSourceComponent();
}
}
public TableTransferable getTransferable(Map<String, Object> rawVariables) {
TableTransferable transferable = new TableTransferable(rawVariables);
return transferable;
}
public DropHandler getDropHandler() {
return dropHandler;
}
public void setDropHandler(DropHandler dropHandler) {
this.dropHandler = dropHandler;
}
public AbstractSelectTargetDetails translateDropTargetDetails(
Map<String, Object> clientVariables) {
return new AbstractSelectTargetDetails(clientVariables);
}
/**
* Sets the behavior of how the multi-select mode should behave when the
* table is both selectable and in multi-select mode.
*
* @param mode
* The select mode of the table
*/
public void setMultiSelectMode(MultiSelectMode mode) {
multiSelectMode = mode;
requestRepaint();
}
/**
* Returns the select mode in which multi-select is used.
*
* @return The multi select mode
*/
public MultiSelectMode getMultiSelectMode() {
return multiSelectMode;
}
/**
* Lazy loading accept criterion for Table. Accepted target rows are loaded
* from server once per drag and drop operation. Developer must override one
* method that decides on which rows the currently dragged data can be
* dropped.
*
* <p>
* Initially pretty much no data is sent to client. On first required
* criterion check (per drag request) the client side data structure is
* initialized from server and no subsequent requests requests are needed
* during that drag and drop operation.
*/
@ClientCriterion(VLazyInitItemIdentifiers.class)
public static abstract class TableDropCriterion extends ServerSideCriterion {
private Table table;
private Set<Object> allowedItemIds;
/*
* (non-Javadoc)
*
* @see
* com.vaadin.event.dd.acceptcriteria.ServerSideCriterion#getIdentifier
* ()
*/
@Override
protected String getIdentifier() {
return TableDropCriterion.class.getCanonicalName();
}
/*
* (non-Javadoc)
*
* @see
* com.vaadin.event.dd.acceptcriteria.AcceptCriterion#accepts(com.vaadin
* .event.dd.DragAndDropEvent)
*/
public boolean accept(DragAndDropEvent dragEvent) {
AbstractSelectTargetDetails dropTargetData = (AbstractSelectTargetDetails) dragEvent
.getTargetDetails();
table = (Table) dragEvent.getTargetDetails().getTarget();
ArrayList<Object> visibleItemIds = new ArrayList<Object>(
table.getPageLength());
visibleItemIds.size();
Object id = table.getCurrentPageFirstItemId();
for (int i = 0; i < table.getPageLength() && id != null; i++) {
visibleItemIds.add(id);
id = table.nextItemId(id);
}
allowedItemIds = getAllowedItemIds(dragEvent, table, visibleItemIds);
return allowedItemIds.contains(dropTargetData.getItemIdOver());
}
/*
* (non-Javadoc)
*
* @see
* com.vaadin.event.dd.acceptcriteria.AcceptCriterion#paintResponse(
* com.vaadin.terminal.PaintTarget)
*/
@Override
public void paintResponse(PaintTarget target) throws PaintException {
/*
* send allowed nodes to client so subsequent requests can be
* avoided
*/
Object[] array = allowedItemIds.toArray();
for (int i = 0; i < array.length; i++) {
String key = table.itemIdMapper.key(array[i]);
array[i] = key;
}
target.addAttribute("allowedIds", array);
}
/**
* @param dragEvent
* @param table
* the table for which the allowed item identifiers are
* defined
* @param visibleItemIds
* the list of currently rendered item identifiers, accepted
* item id's need to be detected only for these visible items
* @return the set of identifiers for items on which the dragEvent will
* be accepted
*/
protected abstract Set<Object> getAllowedItemIds(
DragAndDropEvent dragEvent, Table table,
Collection<Object> visibleItemIds);
}
/**
* Click event fired when clicking on the Table headers. The event includes
* a reference the the Table the event originated from, the property id of
* the column which header was pressed and details about the mouse event
* itself.
*/
public static class HeaderClickEvent extends ClickEvent {
public static final Method HEADER_CLICK_METHOD;
static {
try {
// Set the header click method
HEADER_CLICK_METHOD = HeaderClickListener.class
.getDeclaredMethod("headerClick",
new Class[] { HeaderClickEvent.class });
} catch (final java.lang.NoSuchMethodException e) {
// This should never happen
throw new java.lang.RuntimeException();
}
}
// The property id of the column which header was pressed
private final Object columnPropertyId;
public HeaderClickEvent(Component source, Object propertyId,
MouseEventDetails details) {
super(source, details);
columnPropertyId = propertyId;
}
/**
* Gets the property id of the column which header was pressed
*
* @return The column propety id
*/
public Object getPropertyId() {
return columnPropertyId;
}
}
/**
* Click event fired when clicking on the Table footers. The event includes
* a reference the the Table the event originated from, the property id of
* the column which header was pressed and details about the mouse event
* itself.
*/
public static class FooterClickEvent extends ClickEvent {
public static final Method FOOTER_CLICK_METHOD;
static {
try {
// Set the header click method
FOOTER_CLICK_METHOD = FooterClickListener.class
.getDeclaredMethod("footerClick",
new Class[] { FooterClickEvent.class });
} catch (final java.lang.NoSuchMethodException e) {
// This should never happen
throw new java.lang.RuntimeException();
}
}
// The property id of the column which header was pressed
private final Object columnPropertyId;
/**
* Constructor
*
* @param source
* The source of the component
* @param propertyId
* The propertyId of the column
* @param details
* The mouse details of the click
*/
public FooterClickEvent(Component source, Object propertyId,
MouseEventDetails details) {
super(source, details);
columnPropertyId = propertyId;
}
/**
* Gets the property id of the column which header was pressed
*
* @return The column propety id
*/
public Object getPropertyId() {
return columnPropertyId;
}
}
/**
* Interface for the listener for column header mouse click events. The
* headerClick method is called when the user presses a header column cell.
*/
public interface HeaderClickListener extends Serializable {
/**
* Called when a user clicks a header column cell
*
* @param event
* The event which contains information about the column and
* the mouse click event
*/
public void headerClick(HeaderClickEvent event);
}
/**
* Interface for the listener for column footer mouse click events. The
* footerClick method is called when the user presses a footer column cell.
*/
public interface FooterClickListener extends Serializable {
/**
* Called when a user clicks a footer column cell
*
* @param event
* The event which contains information about the column and
* the mouse click event
*/
public void footerClick(FooterClickEvent event);
}
/**
* Adds a header click listener which handles the click events when the user
* clicks on a column header cell in the Table.
* <p>
* The listener will receive events which contain information about which
* column was clicked and some details about the mouse event.
* </p>
*
* @param listener
* The handler which should handle the header click events.
*/
public void addListener(HeaderClickListener listener) {
addListener(VScrollTable.HEADER_CLICK_EVENT_ID, HeaderClickEvent.class,
listener, HeaderClickEvent.HEADER_CLICK_METHOD);
}
/**
* Removes a header click listener
*
* @param listener
* The listener to remove.
*/
public void removeListener(HeaderClickListener listener) {
removeListener(VScrollTable.HEADER_CLICK_EVENT_ID,
HeaderClickEvent.class, listener);
}
/**
* Adds a footer click listener which handles the click events when the user
* clicks on a column footer cell in the Table.
* <p>
* The listener will receive events which contain information about which
* column was clicked and some details about the mouse event.
* </p>
*
* @param listener
* The handler which should handle the footer click events.
*/
public void addListener(FooterClickListener listener) {
addListener(VScrollTable.FOOTER_CLICK_EVENT_ID, FooterClickEvent.class,
listener, FooterClickEvent.FOOTER_CLICK_METHOD);
}
/**
* Removes a footer click listener
*
* @param listener
* The listener to remove.
*/
public void removeListener(FooterClickListener listener) {
removeListener(VScrollTable.FOOTER_CLICK_EVENT_ID,
FooterClickEvent.class, listener);
}
/**
* Gets the footer caption beneath the rows
*
* @param propertyId
* The propertyId of the column *
* @return The caption of the footer or NULL if not set
*/
public String getColumnFooter(Object propertyId) {
return columnFooters.get(propertyId);
}
/**
* Sets the column footer caption. The column footer caption is the text
* displayed beneath the column if footers have been set visible.
*
* @param propertyId
* The properyId of the column
*
* @param footer
* The caption of the footer
*/
public void setColumnFooter(Object propertyId, String footer) {
if (footer == null) {
columnFooters.remove(propertyId);
} else {
columnFooters.put(propertyId, footer);
}
requestRepaint();
}
/**
* Sets the footer visible in the bottom of the table.
* <p>
* The footer can be used to add column related data like sums to the bottom
* of the Table using setColumnFooter(Object propertyId, String footer).
* </p>
*
* @param visible
* Should the footer be visible
*/
public void setFooterVisible(boolean visible) {
columnFootersVisible = visible;
// Assures the visual refresh
refreshRenderedCells();
}
/**
* Is the footer currently visible?
*
* @return Returns true if visible else false
*/
public boolean isFooterVisible() {
return columnFootersVisible;
}
/**
* This event is fired when a column is resized. The event contains the
* columns property id which was fired, the previous width of the column and
* the width of the column after the resize.
*/
public static class ColumnResizeEvent extends Component.Event {
public static final Method COLUMN_RESIZE_METHOD;
static {
try {
COLUMN_RESIZE_METHOD = ColumnResizeListener.class
.getDeclaredMethod("columnResize",
new Class[] { ColumnResizeEvent.class });
} catch (final java.lang.NoSuchMethodException e) {
// This should never happen
throw new java.lang.RuntimeException();
}
}
private final int previousWidth;
private final int currentWidth;
private final Object columnPropertyId;
/**
* Constructor
*
* @param source
* The source of the event
* @param propertyId
* The columns property id
* @param previous
* The width in pixels of the column before the resize event
* @param current
* The width in pixels of the column after the resize event
*/
public ColumnResizeEvent(Component source, Object propertyId,
int previous, int current) {
super(source);
previousWidth = previous;
currentWidth = current;
columnPropertyId = propertyId;
}
/**
* Get the column property id of the column that was resized.
*
* @return The column property id
*/
public Object getPropertyId() {
return columnPropertyId;
}
/**
* Get the width in pixels of the column before the resize event
*
* @return Width in pixels
*/
public int getPreviousWidth() {
return previousWidth;
}
/**
* Get the width in pixels of the column after the resize event
*
* @return Width in pixels
*/
public int getCurrentWidth() {
return currentWidth;
}
}
/**
* Interface for listening to column resize events.
*/
public interface ColumnResizeListener extends Serializable {
/**
* This method is triggered when the column has been resized
*
* @param event
* The event which contains the column property id, the
* previous width of the column and the current width of the
* column
*/
public void columnResize(ColumnResizeEvent event);
}
/**
* Adds a column resize listener to the Table. A column resize listener is
* called when a user resizes a columns width.
*
* @param listener
* The listener to attach to the Table
*/
public void addListener(ColumnResizeListener listener) {
addListener(VScrollTable.COLUMN_RESIZE_EVENT_ID,
ColumnResizeEvent.class, listener,
ColumnResizeEvent.COLUMN_RESIZE_METHOD);
}
/**
* Removes a column resize listener from the Table.
*
* @param listener
* The listener to remove
*/
public void removeListener(ColumnResizeListener listener) {
removeListener(VScrollTable.COLUMN_RESIZE_EVENT_ID,
ColumnResizeEvent.class, listener);
}
}