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Package: GridCopyKeyListener
GridCopyKeyListener
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| GridCopyKeyListener(Display) |
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| copySelectionToClipboard(Grid) |
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| getSelectionAsText(Grid) |
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| getText(Grid, int, int) |
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| initializeTableSelection(Grid, Point[], int, int, int, int) |
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| isTriggerActive() |
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| keyPressed(KeyEvent) |
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| keyReleased(KeyEvent) |
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| setTriggerActive(boolean) |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2016 EclipseSource Muenchen GmbH and others.
3: *
4: * All rights reserved. This program and the accompanying materials
5: * are made available under the terms of the Eclipse Public License 2.0
6: * which accompanies this distribution, and is available at
7: * https://www.eclipse.org/legal/epl-2.0/
8: *
9: * SPDX-License-Identifier: EPL-2.0
10: *
11: * Contributors:
12: * Alexandra Buzila - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emf.ecp.view.internal.table.nebula.grid;
15:
16: import java.util.Map;
17:
18: import org.eclipse.emf.ecp.edit.spi.swt.table.ECPCellEditor;
19: import org.eclipse.nebula.widgets.grid.Grid;
20: import org.eclipse.nebula.widgets.grid.GridItem;
21: import org.eclipse.swt.SWT;
22: import org.eclipse.swt.dnd.Clipboard;
23: import org.eclipse.swt.dnd.TextTransfer;
24: import org.eclipse.swt.events.KeyEvent;
25: import org.eclipse.swt.events.KeyListener;
26: import org.eclipse.swt.graphics.Point;
27: import org.eclipse.swt.widgets.Display;
28:
29: /**
30: * {@link KeyListener} for the copy action on a {@link Grid} control.
31: *
32: * @author Alexandra Buzila
33: * @since 1.10
34: *
35: */
36: public class GridCopyKeyListener implements KeyListener {
37: private final Clipboard clipboard;
38: private boolean triggerActive;
39:
40: /**
41: * Constructor.
42: *
43: * @param display the {@link Display} on which to allocate this command's {@link Clipboard}.
44: */
45: public GridCopyKeyListener(Display display) {
46: clipboard = new Clipboard(display);
47: }
48:
49: @Override
50: public void keyPressed(KeyEvent e) {
51:• setTriggerActive((e.stateMask & SWT.CTRL) != 0 && e.keyCode == 'c');
52: }
53:
54: @Override
55: public void keyReleased(KeyEvent e) {
56:• if (isTriggerActive()) {
57: final Grid grid = (Grid) e.widget;
58: copySelectionToClipboard(grid);
59: }
60: }
61:
62: /**
63: * Copies the table selection of the {@link Grid} as a formatted string (if a selection exists).
64: *
65: * @param grid the {@link Grid} control.
66: */
67: public void copySelectionToClipboard(Grid grid) {
68: final String selectionText = getSelectionAsText(grid);
69:• if (selectionText == null || selectionText.isEmpty()) {
70: return;
71: }
72: final String[] data = { selectionText };
73: final TextTransfer[] dataTypes = { TextTransfer.getInstance() };
74:
75: clipboard.setContents(data, dataTypes);
76: }
77:
78: /**
79: * Returns the table selection of the {@link Grid} as a formatted string.
80: *
81: * @param grid the {@link Grid} control
82: * @return the selection
83: */
84: public String getSelectionAsText(Grid grid) {
85: final Point[] cellSelection = grid.getCellSelection();
86: final StringBuilder selection = new StringBuilder();
87: int minRow = Integer.MAX_VALUE;
88: int minColumn = Integer.MAX_VALUE;
89: int maxRow = Integer.MIN_VALUE;
90: int maxColumn = Integer.MIN_VALUE;
91:• for (final Point point : cellSelection) {
92: final int row = point.y;
93: final int col = point.x;
94:• if (row < minRow) {
95: minRow = row;
96: }
97:• if (row > maxRow) {
98: maxRow = row;
99: }
100:• if (col < minColumn) {
101: minColumn = col;
102: }
103:• if (col > maxColumn) {
104: maxColumn = col;
105: }
106: }
107: final int columnSize = maxColumn - minColumn + 1;
108: final int rowSize = maxRow - minRow + 1;
109: final String[][] tableSelection = initializeTableSelection(grid, cellSelection, columnSize, rowSize, minColumn,
110: minRow);
111:• for (int i = 0; i < rowSize; i++) {
112:• for (int j = 0; j < columnSize; j++) {
113: final String text = tableSelection[j][i];
114:• if (j != 0) {
115: selection.append('\t');
116: }
117:• if (text != null) {
118: selection.append(text);
119: }
120: }
121:• if (i != rowSize - 1) {
122: selection.append('\n');
123: }
124: }
125: return selection.toString();
126: }
127:
128: private String[][] initializeTableSelection(Grid grid, Point[] cellSelection, int columnSize, int rowSize,
129: int minColumn, int minRow) {
130: final String[][] tableSelection = new String[columnSize][rowSize];
131:• for (int i = 0; i < cellSelection.length; i++) {
132: final int column = cellSelection[i].x;
133: final int row = cellSelection[i].y;
134: final String text = getText(grid, column, row);
135: tableSelection[column - minColumn][row - minRow] = text;
136: }
137: return tableSelection;
138: }
139:
140: private String getText(Grid grid, int column, int row) {
141: final GridItem item = grid.getItem(row);
142: @SuppressWarnings("unchecked")
143: final Map<Integer, String> copyAlternative = (Map<Integer, String>) item
144: .getData(ECPCellEditor.COPY_STRING_ALTERNATIVE);
145:• if (copyAlternative != null && copyAlternative.containsKey(column)) {
146: return copyAlternative.get(column);
147: }
148: final String text = item.getText(column);
149: return text;
150: }
151:
152: /**
153: * @return <code>true</code> if copy was triggered in key pressed
154: */
155: protected boolean isTriggerActive() {
156: return triggerActive;
157: }
158:
159: /**
160: * May be called from {@link #keyPressed(KeyEvent)} to indicated whether this triggers the action.
161: *
162: * @param triggerActive <code>true</code> if key release should perform the action, <code>false</code> otherwise
163: */
164: protected void setTriggerActive(boolean triggerActive) {
165: this.triggerActive = triggerActive;
166: }
167: }