| /******************************************************************************* |
| * Copyright (c) 2012, 2020 Original authors and others. |
| * |
| * This program and the accompanying materials are made |
| * available under the terms of the Eclipse Public License 2.0 |
| * which is available at https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Original authors and others - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.nebula.widgets.nattable.group.command; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.LinkedHashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.eclipse.nebula.widgets.nattable.Messages; |
| import org.eclipse.nebula.widgets.nattable.columnRename.ColumnRenameDialog; |
| import org.eclipse.nebula.widgets.nattable.command.AbstractLayerCommandHandler; |
| import org.eclipse.nebula.widgets.nattable.group.ColumnGroupHeaderLayer; |
| import org.eclipse.nebula.widgets.nattable.group.ColumnGroupModel; |
| import org.eclipse.nebula.widgets.nattable.group.ColumnGroupModel.ColumnGroup; |
| import org.eclipse.nebula.widgets.nattable.group.ColumnGroupUtils; |
| import org.eclipse.nebula.widgets.nattable.group.event.GroupColumnsEvent; |
| import org.eclipse.nebula.widgets.nattable.group.event.UngroupColumnsEvent; |
| import org.eclipse.nebula.widgets.nattable.reorder.command.MultiColumnReorderCommand; |
| import org.eclipse.nebula.widgets.nattable.selection.SelectionLayer; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Display; |
| |
| public class ColumnGroupsCommandHandler extends |
| AbstractLayerCommandHandler<IColumnGroupCommand> { |
| |
| private final ColumnGroupModel model; |
| private final SelectionLayer selectionLayer; |
| private final ColumnGroupHeaderLayer contextLayer; |
| private Map<Integer, Integer> columnIndexesToPositionsMap; |
| |
| public ColumnGroupsCommandHandler(ColumnGroupModel model, SelectionLayer selectionLayer, ColumnGroupHeaderLayer contextLayer) { |
| this.model = model; |
| this.selectionLayer = selectionLayer; |
| this.contextLayer = contextLayer; |
| } |
| |
| @Override |
| public boolean doCommand(IColumnGroupCommand command) { |
| if (command instanceof CreateColumnGroupCommand) { |
| if (this.columnIndexesToPositionsMap.size() > 0) { |
| handleGroupColumnsCommand(((CreateColumnGroupCommand) command).getColumnGroupName()); |
| this.columnIndexesToPositionsMap.clear(); |
| return true; |
| } |
| } else if (command instanceof OpenCreateColumnGroupDialog) { |
| OpenCreateColumnGroupDialog openDialogCommand = (OpenCreateColumnGroupDialog) command; |
| loadSelectedColumnsIndexesWithPositions(); |
| if (this.selectionLayer.getFullySelectedColumnPositions().length > 0 |
| && this.columnIndexesToPositionsMap.size() > 0) { |
| openDialogCommand.openDialog(this.contextLayer); |
| } else { |
| openDialogCommand.openErrorBox(Messages.getString("ColumnGroups.selectNonGroupedColumns")); //$NON-NLS-1$ |
| } |
| return true; |
| } else if (command instanceof UngroupColumnCommand) { |
| handleUngroupCommand(); |
| return true; |
| } else if (command instanceof RemoveColumnGroupCommand) { |
| RemoveColumnGroupCommand removeColumnGroupCommand = (RemoveColumnGroupCommand) command; |
| int columnIndex = removeColumnGroupCommand.getColumnIndex(); |
| handleRemoveColumnGroupCommand(columnIndex); |
| return true; |
| } else if (command instanceof DisplayColumnGroupRenameDialogCommand) { |
| return displayColumnGroupRenameDialog((DisplayColumnGroupRenameDialogCommand) command); |
| } |
| return false; |
| } |
| |
| private boolean displayColumnGroupRenameDialog(DisplayColumnGroupRenameDialogCommand command) { |
| int columnPosition = command.getColumnPosition(); |
| |
| ColumnRenameDialog dialog = new ColumnRenameDialog(Display.getDefault().getActiveShell(), null, null); |
| Rectangle colHeaderBounds = this.contextLayer.getBoundsByPosition(columnPosition, 0); |
| Point point = new Point(colHeaderBounds.x, colHeaderBounds.y + colHeaderBounds.height); |
| dialog.setLocation(command.toDisplayCoordinates(point)); |
| dialog.open(); |
| |
| if (!dialog.isCancelPressed()) { |
| int columnIndex = this.contextLayer.getColumnIndexByPosition(columnPosition); |
| ColumnGroup columnGroup = this.model.getColumnGroupByIndex(columnIndex); |
| columnGroup.setName(dialog.getNewColumnLabel()); |
| } |
| |
| return true; |
| } |
| |
| @Override |
| public Class<IColumnGroupCommand> getCommandClass() { |
| return IColumnGroupCommand.class; |
| } |
| |
| protected void loadSelectedColumnsIndexesWithPositions() { |
| this.columnIndexesToPositionsMap = new LinkedHashMap<>(); |
| int[] fullySelectedColumns = this.selectionLayer.getFullySelectedColumnPositions(); |
| |
| if (fullySelectedColumns.length > 0) { |
| for (int index = 0; index < fullySelectedColumns.length; index++) { |
| final int columnPosition = fullySelectedColumns[index]; |
| int columnIndex = this.selectionLayer.getColumnIndexByPosition(columnPosition); |
| if (this.model.isPartOfAGroup(columnIndex)) { |
| this.columnIndexesToPositionsMap.clear(); |
| break; |
| } |
| this.columnIndexesToPositionsMap.put(columnIndex, columnPosition); |
| } |
| |
| } |
| } |
| |
| public void handleGroupColumnsCommand(String columnGroupName) { |
| try { |
| Set<Integer> positions = new HashSet<>(); |
| List<Integer> selectedPositions = null; |
| |
| ColumnGroup group = this.model.getColumnGroupByName(columnGroupName); |
| if (group != null) { |
| // a group with the same name already exists so we update the |
| // existing group as this command handler does not support |
| // multiple groups with the same name |
| for (Integer pos : group.getMembers()) { |
| positions.add(this.selectionLayer.getColumnPositionByIndex(pos)); |
| } |
| positions.addAll(this.columnIndexesToPositionsMap.values()); |
| selectedPositions = new ArrayList<>(positions); |
| } else { |
| selectedPositions = new ArrayList<>(this.columnIndexesToPositionsMap.values()); |
| } |
| |
| Collections.sort(selectedPositions); |
| |
| int[] fullySelectedColumns = new int[this.columnIndexesToPositionsMap.size()]; |
| int count = 0; |
| for (Integer columnIndex : this.columnIndexesToPositionsMap.keySet()) { |
| fullySelectedColumns[count++] = columnIndex.intValue(); |
| } |
| // we first need to reorder and then process the group creation, |
| // otherwise the group reordering will be processed before the |
| // column reordering which breaks the rendering |
| this.selectionLayer.doCommand( |
| new MultiColumnReorderCommand(this.selectionLayer, selectedPositions, selectedPositions.get(0))); |
| this.model.addColumnsIndexesToGroup(columnGroupName, fullySelectedColumns); |
| this.selectionLayer.clear(); |
| } catch (Exception t) { |
| // do nothing |
| } |
| this.contextLayer.fireLayerEvent(new GroupColumnsEvent(this.contextLayer)); |
| } |
| |
| public void handleUngroupCommand() { |
| // Grab fully selected column positions |
| int[] fullySelectedColumns = this.selectionLayer.getFullySelectedColumnPositions(); |
| Map<String, Integer> toColumnPositions = new HashMap<>(); |
| if (fullySelectedColumns.length > 0) { |
| |
| // Pick the ones which belong to a group and remove them from the |
| // group |
| for (int index = 0; index < fullySelectedColumns.length; index++) { |
| final int columnPosition = fullySelectedColumns[index]; |
| int columnIndex = this.selectionLayer.getColumnIndexByPosition(columnPosition); |
| if (this.model.isPartOfAGroup(columnIndex) |
| && !this.model.isPartOfAnUnbreakableGroup(columnIndex)) { |
| handleRemovalFromGroup(toColumnPositions, columnIndex); |
| } |
| } |
| // The groups which were affected should be reordered to the start |
| // position, this should group all columns together |
| Collection<Integer> values = toColumnPositions.values(); |
| final Iterator<Integer> toColumnPositionsIterator = values.iterator(); |
| while (toColumnPositionsIterator.hasNext()) { |
| Integer toColumnPosition = toColumnPositionsIterator.next(); |
| this.selectionLayer.doCommand( |
| new ReorderColumnGroupCommand(this.selectionLayer, toColumnPosition, toColumnPosition)); |
| } |
| this.selectionLayer.clear(); |
| } |
| |
| this.contextLayer.fireLayerEvent(new UngroupColumnsEvent(this.contextLayer)); |
| } |
| |
| private void handleRemovalFromGroup(Map<String, Integer> toColumnPositions, int columnIndex) { |
| ColumnGroup columnGroup = this.model.getColumnGroupByIndex(columnIndex); |
| |
| final String columnGroupName = columnGroup.getName(); |
| final List<Integer> columnIndexesInGroup = columnGroup.getMembers(); |
| final int columnGroupSize = columnIndexesInGroup.size(); |
| if (!toColumnPositions.containsKey(columnGroupName)) { |
| for (int colGroupIndex : columnIndexesInGroup) { |
| if (ColumnGroupUtils.isFirstVisibleColumnIndexInGroup(colGroupIndex, this.selectionLayer, this.model)) { |
| int toPosition = this.selectionLayer.getColumnPositionByIndex(colGroupIndex); |
| if (colGroupIndex == columnIndex) { |
| if (columnGroupSize == 1) { |
| break; |
| } else { |
| toPosition++; |
| } |
| } |
| toColumnPositions.put(columnGroupName, toPosition); |
| break; |
| } |
| } |
| } else { |
| if (columnGroupSize - 1 <= 0) { |
| toColumnPositions.remove(columnGroupName); |
| } |
| } |
| columnGroup.removeColumn(columnIndex); |
| } |
| |
| private void handleRemoveColumnGroupCommand(int columnIndex) { |
| ColumnGroup columnGroup = this.model.getColumnGroupByIndex(columnIndex); |
| this.model.removeColumnGroup(columnGroup); |
| } |
| |
| } |