| /******************************************************************************* |
| * 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 |
| * Jonas Hugo <Jonas.Hugo@jeppesen.com>, |
| * Markus Wahl <Markus.Wahl@jeppesen.com> - Use getters and setters for |
| * the markers of SelectionLayer instead of the fields. |
| * Vincent Lorenzo <vincent.lorenzo@cea.fr> - Bug 478622 |
| ******************************************************************************/ |
| package org.eclipse.nebula.widgets.nattable.selection; |
| |
| import static org.eclipse.nebula.widgets.nattable.selection.SelectionUtils.isControlOnly; |
| import static org.eclipse.nebula.widgets.nattable.selection.SelectionUtils.isShiftOnly; |
| import static org.eclipse.nebula.widgets.nattable.selection.SelectionUtils.noShiftOrControl; |
| |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.stream.IntStream; |
| |
| import org.eclipse.nebula.widgets.nattable.command.AbstractLayerCommandHandler; |
| import org.eclipse.nebula.widgets.nattable.coordinate.Range; |
| import org.eclipse.nebula.widgets.nattable.group.RowGroupHeaderLayer; |
| import org.eclipse.nebula.widgets.nattable.group.RowGroupUtils; |
| import org.eclipse.nebula.widgets.nattable.group.model.IRowGroupModel; |
| import org.eclipse.nebula.widgets.nattable.selection.command.SelectRowGroupsCommand; |
| import org.eclipse.nebula.widgets.nattable.selection.event.RowSelectionEvent; |
| import org.eclipse.swt.graphics.Rectangle; |
| |
| public class SelectRowGroupCommandHandler<T> extends AbstractLayerCommandHandler<SelectRowGroupsCommand> { |
| |
| private final IRowGroupModel<T> model; |
| private final RowGroupHeaderLayer<T> rowGroupHeaderLayer; |
| private final SelectionLayer selectionLayer; |
| |
| public SelectRowGroupCommandHandler( |
| IRowGroupModel<T> model, |
| SelectionLayer selectionLayer, |
| RowGroupHeaderLayer<T> rowGroupHeaderLayer) { |
| |
| this.model = model; |
| this.selectionLayer = selectionLayer; |
| this.rowGroupHeaderLayer = rowGroupHeaderLayer; |
| } |
| |
| @Override |
| public Class<SelectRowGroupsCommand> getCommandClass() { |
| return SelectRowGroupsCommand.class; |
| } |
| |
| @Override |
| protected boolean doCommand(SelectRowGroupsCommand command) { |
| int[] rowIndexes = RowGroupUtils.getRowIndexesInGroupAsArray( |
| this.model, |
| this.rowGroupHeaderLayer.getRowIndexByPosition(command.getRowPosition())); |
| int[] rowPositions = RowGroupUtils.getRowPositionsInGroup( |
| this.selectionLayer, |
| rowIndexes); |
| selectRows( |
| command.getColumnPosition(), |
| rowPositions, |
| command.isWithShiftMask(), |
| command.isWithControlMask(), |
| command.getRowPositionToMoveIntoViewport(), |
| command.isMoveAnchorToTopOfGroup()); |
| return true; |
| } |
| |
| /** |
| * Trigger the selection of rows. |
| * |
| * @param columnPosition |
| * column position needed for the selection anchor. |
| * @param rowPositions |
| * the row to select. |
| * @param withShiftMask |
| * if shift mask selection behavior is enabled or not. |
| * @param withControlMask |
| * if control mask selection behavior is enabled or not. |
| * @param rowPositionToMoveIntoViewport |
| * <code>true</code> if the selected row should be moved into the |
| * viewport to make it visible. |
| * @param moveAnchorToTopOfGroup |
| * <code>true</code> if the selection anchor should be moved to |
| * the first row in the group. |
| * |
| * @since 2.0 |
| */ |
| protected void selectRows( |
| int columnPosition, |
| int[] rowPositions, |
| boolean withShiftMask, |
| boolean withControlMask, |
| int rowPositionToMoveIntoViewport, |
| boolean moveAnchorToTopOfGroup) { |
| |
| HashSet<Range> changedRowRanges = new HashSet<>(); |
| |
| if (rowPositions.length > 0) { |
| changedRowRanges.addAll(internalSelectRow( |
| columnPosition, |
| rowPositions[0], |
| rowPositions.length, |
| withShiftMask, |
| withControlMask, |
| moveAnchorToTopOfGroup)); |
| } |
| |
| int[] changedRows = changedRowRanges.stream() |
| .flatMapToInt(range -> IntStream.range(range.start, range.end)) |
| .toArray(); |
| this.selectionLayer.fireLayerEvent( |
| new RowSelectionEvent( |
| this.selectionLayer, |
| changedRows, |
| rowPositionToMoveIntoViewport, |
| withShiftMask, |
| withControlMask)); |
| } |
| |
| private HashSet<Range> internalSelectRow( |
| int columnPosition, |
| int rowPosition, |
| int rowCount, |
| boolean withShiftMask, |
| boolean withControlMask, |
| boolean moveAnchorToTopOfGroup) { |
| |
| HashSet<Range> changedRowRanges = new HashSet<>(); |
| |
| if (noShiftOrControl(withShiftMask, withControlMask)) { |
| changedRowRanges.addAll(this.selectionLayer.getSelectedRowPositions()); |
| this.selectionLayer.clear(false); |
| this.selectionLayer.selectCell(0, rowPosition, withShiftMask, withControlMask); |
| this.selectionLayer.selectRegion( |
| 0, |
| rowPosition, |
| this.selectionLayer.getColumnCount(), |
| rowCount); |
| changedRowRanges.add(new Range(rowPosition, rowPosition + rowCount)); |
| } else if (isControlOnly(withShiftMask, withControlMask)) { |
| changedRowRanges.add(selectRowWithCtrlKey(columnPosition, rowPosition, rowCount)); |
| } else if (isShiftOnly(withShiftMask, withControlMask)) { |
| changedRowRanges.add(selectRowWithShiftKey(columnPosition, rowPosition, rowCount)); |
| } |
| if (moveAnchorToTopOfGroup) { |
| this.selectionLayer.moveSelectionAnchor(columnPosition, rowPosition); |
| } |
| this.selectionLayer.getLastSelectedCellPosition().columnPosition = this.selectionLayer.getColumnCount() - 1; |
| this.selectionLayer.getLastSelectedCellPosition().rowPosition = rowPosition; |
| |
| return changedRowRanges; |
| } |
| |
| private Range selectRowWithCtrlKey(int columnPosition, int rowPosition, int rowCount) { |
| Rectangle selectedRowRectangle = new Rectangle(0, rowPosition, this.selectionLayer.getColumnCount(), rowCount); |
| |
| if (this.selectionLayer.isRowPositionFullySelected(rowPosition)) { |
| this.selectionLayer.clearSelection(selectedRowRectangle); |
| if (this.selectionLayer.getLastSelectedRegion() != null |
| && this.selectionLayer.getLastSelectedRegion().equals(selectedRowRectangle)) { |
| this.selectionLayer.setLastSelectedRegion(null); |
| } |
| } else { |
| // Preserve last selected region |
| if (this.selectionLayer.getLastSelectedRegion() != null) { |
| this.selectionLayer.selectionModel.addSelection(new Rectangle( |
| this.selectionLayer.getLastSelectedRegion().x, |
| this.selectionLayer.getLastSelectedRegion().y, |
| this.selectionLayer.getLastSelectedRegion().width, |
| this.selectionLayer.getLastSelectedRegion().height)); |
| } |
| this.selectionLayer.selectRegion( |
| 0, |
| rowPosition, |
| this.selectionLayer.getColumnCount(), |
| rowCount); |
| } |
| |
| return new Range(rowPosition, rowPosition + 1); |
| } |
| |
| private Range selectRowWithShiftKey(int columnPosition, int rowPosition, int rowCount) { |
| if (this.selectionLayer.getLastSelectedRegion() != null) { |
| int start = Math.min(this.selectionLayer.getLastSelectedRegion().y, rowPosition); |
| int end = Math.max(this.selectionLayer.getLastSelectedRegion().y, rowPosition); |
| |
| for (int i = start; i <= end; i++) { |
| int index = this.selectionLayer.getRowIndexByPosition(i); |
| if (RowGroupUtils.isPartOfAGroup(this.model, index) |
| && !this.selectionLayer.isRowPositionFullySelected(i)) { |
| int[] rowPositions = RowGroupUtils.getRowPositionsInGroup( |
| this.selectionLayer, |
| RowGroupUtils.getRowIndexesInGroupAsArray(this.model, index)); |
| Arrays.sort(rowPositions); |
| this.selectionLayer.selectRegion( |
| 0, |
| rowPositions[0], |
| this.selectionLayer.getColumnCount(), |
| rowPositions.length); |
| i = rowPositions[rowPositions.length - 1]; |
| } |
| } |
| |
| } |
| return new Range(rowPosition, rowPosition + 1); |
| } |
| |
| } |