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Package: PopupWindow
PopupWindow
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| PopupWindow(Control, int) |
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| PopupWindow(Control, int, int) |
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| PopupWindow(Control, int, int, boolean) |
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| close() |
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| configurePopupWindow(Control, int, boolean) |
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| getContent() |
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| open() |
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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.emfforms.spi.swt.core.util;
15:
16: import org.eclipse.core.runtime.Assert;
17: import org.eclipse.swt.SWT;
18: import org.eclipse.swt.graphics.Point;
19: import org.eclipse.swt.graphics.Rectangle;
20: import org.eclipse.swt.layout.FillLayout;
21: import org.eclipse.swt.layout.GridLayout;
22: import org.eclipse.swt.widgets.Composite;
23: import org.eclipse.swt.widgets.Control;
24: import org.eclipse.swt.widgets.Shell;
25:
26: /**
27: * Control used for displaying a popup shell.
28: *
29: * @author Alexandra Buzila
30: * @since 1.10
31: *
32: */
33: public class PopupWindow {
34: private Composite content;
35: private final Shell shell;
36:
37: /**
38: * Creates a new resizable popup window, with size and location relative to the reference control.
39: *
40: * @param control the reference control
41: * @param maxHeight the maxHeight of the window
42: */
43: public PopupWindow(final Control control, int maxHeight) {
44: this(control, maxHeight, SWT.RESIZE);
45: }
46:
47: /**
48: * Creates a new resizable popup window, with size and location relative to the reference control.
49: *
50: * @param control the reference control
51: * @param maxHeight the maximum height of the window
52: * @param style the style of the window
53: */
54: public PopupWindow(final Control control, int maxHeight, int style) {
55: Assert.isNotNull(control);
56: shell = new Shell(control.getShell(), style);
57: configurePopupWindow(control, maxHeight, false);
58: }
59:
60: /**
61: * Creates a new resizable popup window, with size and location relative to the reference control.
62: *
63: * @param control the reference control
64: * @param maxHeight the maximum height of the window
65: * @param style the style of the window
66: * @param stretchUp If the window does not fit on screen vertically, it will stretch up to reach the maxHeight
67: */
68: public PopupWindow(final Control control, int maxHeight, int style, boolean stretchUp) {
69: Assert.isNotNull(control);
70: shell = new Shell(control.getShell(), style);
71: configurePopupWindow(control, maxHeight, stretchUp);
72: }
73:
74: /**
75: * Configures the site, layout and location of the popup.
76: *
77: * @param control the reference control
78: * @param maxHeight the maximum height of the window
79: * @param stretchUp If the window does not fit on screen vertically, it will stretch up to reach the maxHeight
80: */
81: protected void configurePopupWindow(final Control control, int maxHeight, boolean stretchUp) {
82: final Point location = control.toDisplay(0, 0);
83: final Shell parentShell = control.getShell();
84: final Rectangle clientArea = control.getShell().getClientArea();
85: final Point bottomRight = parentShell.toDisplay(clientArea.width, clientArea.height);
86: final int distanceToScreenBottom = bottomRight.y - location.y;
87: int verticalMoveUp = 0;
88: int shellHeight = maxHeight;
89:• if (distanceToScreenBottom < maxHeight) {
90:• if (!stretchUp) {
91: shellHeight = Math.min(maxHeight, distanceToScreenBottom);
92: } else {
93: verticalMoveUp = maxHeight - distanceToScreenBottom;
94: }
95:
96: }
97: shell.setSize(control.getSize().x, shellHeight);
98: shell.setLayout(new FillLayout());
99: shell.setLocation(location.x - 4, location.y - 4 - verticalMoveUp);// compensate for shell's margins
100: }
101:
102: /**
103: * Returns the content {@link Composite} of the popup, which clients may use.
104: *
105: * @return the content {@link Composite}.
106: */
107: public Composite getContent() {
108:• if (content == null) {
109: content = new Composite(shell, SWT.NONE);
110: content.setLayout(new GridLayout());
111: }
112: return content;
113: }
114:
115: /**
116: * Opens the popup window.
117: *
118: * @see Shell#open()
119: */
120: public void open() {
121: shell.open();
122: }
123:
124: /**
125: * Closes the popup window.
126: *
127: * @see Shell#close()
128: */
129: public void close() {
130: shell.close();
131: }
132: }