View Javadoc
1   /*
2    * Copyright (C) 2007-2012 Argeo GmbH
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *         http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.argeo.eclipse.ui.dialogs;
17  
18  import org.argeo.eclipse.ui.EclipseUiUtils;
19  import org.eclipse.jface.dialogs.IMessageProvider;
20  import org.eclipse.jface.dialogs.TitleAreaDialog;
21  import org.eclipse.jface.window.Window;
22  import org.eclipse.swt.SWT;
23  import org.eclipse.swt.graphics.Point;
24  import org.eclipse.swt.layout.GridData;
25  import org.eclipse.swt.layout.GridLayout;
26  import org.eclipse.swt.widgets.Composite;
27  import org.eclipse.swt.widgets.Control;
28  import org.eclipse.swt.widgets.Display;
29  import org.eclipse.swt.widgets.Label;
30  import org.eclipse.swt.widgets.Shell;
31  import org.eclipse.swt.widgets.Text;
32  
33  /** Dialog to retrieve a single value. */
34  public class SingleValue extends TitleAreaDialog {
35  	private static final long serialVersionUID = 2843538207460082349L;
36  
37  	private Text valueT;
38  	private String value;
39  	private final String title, message, label;
40  	private final Boolean multiline;
41  
42  	public static String ask(String label, String message) {
43  		SingleValue svd = new SingleValue(label, message);
44  		if (svd.open() == Window.OK)
45  			return svd.getString();
46  		else
47  			return null;
48  	}
49  
50  	public static Long askLong(String label, String message) {
51  		SingleValue svd = new SingleValue(label, message);
52  		if (svd.open() == Window.OK)
53  			return svd.getLong();
54  		else
55  			return null;
56  	}
57  
58  	public static Double askDouble(String label, String message) {
59  		SingleValue svd = new SingleValue(label, message);
60  		if (svd.open() == Window.OK)
61  			return svd.getDouble();
62  		else
63  			return null;
64  	}
65  
66  	public SingleValue(String label, String message) {
67  		this(Display.getDefault().getActiveShell(), label, message, label,
68  				false);
69  	}
70  
71  	public SingleValue(Shell parentShell, String title, String message,
72  			String label, Boolean multiline) {
73  		super(parentShell);
74  		this.title = title;
75  		this.message = message;
76  		this.label = label;
77  		this.multiline = multiline;
78  	}
79  
80  	protected Point getInitialSize() {
81  		if (multiline)
82  			return new Point(450, 350);
83  
84  		else
85  			return new Point(400, 270);
86  	}
87  
88  	protected Control createDialogArea(Composite parent) {
89  		Composite dialogarea = (Composite) super.createDialogArea(parent);
90  		dialogarea.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
91  		Composite composite = new Composite(dialogarea, SWT.NONE);
92  		composite.setLayoutData(EclipseUiUtils.fillAll());
93  		GridLayout layout = new GridLayout(2, false);
94  		layout.marginWidth = layout.marginHeight = 20;
95  		composite.setLayout(layout);
96  
97  		valueT = createLT(composite, label);
98  
99  		setMessage(message, IMessageProvider.NONE);
100 
101 		parent.pack();
102 		valueT.setFocus();
103 		return composite;
104 	}
105 
106 	@Override
107 	protected void okPressed() {
108 		value = valueT.getText();
109 		super.okPressed();
110 	}
111 
112 	/** Creates label and text. */
113 	protected Text createLT(Composite parent, String label) {
114 		new Label(parent, SWT.NONE).setText(label);
115 		Text text;
116 		if (multiline) {
117 			text = new Text(parent, SWT.LEAD | SWT.BORDER | SWT.MULTI);
118 			text.setLayoutData(EclipseUiUtils.fillAll());
119 		} else {
120 			text = new Text(parent, SWT.LEAD | SWT.BORDER | SWT.SINGLE);
121 			text.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, true));
122 		}
123 		return text;
124 	}
125 
126 	protected void configureShell(Shell shell) {
127 		super.configureShell(shell);
128 		shell.setText(title);
129 	}
130 
131 	public String getString() {
132 		return value;
133 	}
134 
135 	public Long getLong() {
136 		return Long.valueOf(getString());
137 	}
138 
139 	public Double getDouble() {
140 		return Double.valueOf(getString());
141 	}
142 }