SingleValue.java

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   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.eclipse.jface.dialogs.Dialog;
  19 import org.eclipse.jface.dialogs.IMessageProvider;
  20 import org.eclipse.jface.dialogs.TitleAreaDialog;
  21 import org.eclipse.swt.SWT;
  22 import org.eclipse.swt.graphics.Point;
  23 import org.eclipse.swt.layout.GridData;
  24 import org.eclipse.swt.layout.GridLayout;
  25 import org.eclipse.swt.widgets.Composite;
  26 import org.eclipse.swt.widgets.Control;
  27 import org.eclipse.swt.widgets.Display;
  28 import org.eclipse.swt.widgets.Label;
  29 import org.eclipse.swt.widgets.Shell;
  30 import org.eclipse.swt.widgets.Text;
  31
  32 /** Dialog retrieve a single value. */
  33 public class SingleValue extends TitleAreaDialog {
  34         private Text valueT;
  35         private String value;
  36         private final String title, message, label;
  37         private final Boolean multiline;
  38
  39         public static String ask(String label, String message) {
  40                 SingleValue svd = new SingleValue(label, message);
  41                 if (svd.open() == Dialog.OK)
  42                         return svd.getString();
  43                 else
  44                         return null;
  45         }
  46
  47         public static Long askLong(String label, String message) {
  48                 SingleValue svd = new SingleValue(label, message);
  49                 if (svd.open() == Dialog.OK)
  50                         return svd.getLong();
  51                 else
  52                         return null;
  53         }
  54
  55         public static Double askDouble(String label, String message) {
  56                 SingleValue svd = new SingleValue(label, message);
  57                 if (svd.open() == Dialog.OK)
  58                         return svd.getDouble();
  59                 else
  60                         return null;
  61         }
  62
  63         public SingleValue(String label, String message) {
  64                 this(Display.getDefault().getActiveShell(), label, message, label,
  65                                 false);
  66         }
  67
  68         public SingleValue(Shell parentShell, String title, String message,
  69                         String label, Boolean multiline) {
  70                 super(parentShell);
  71                 this.title = title;
  72                 this.message = message;
  73                 this.label = label;
  74                 this.multiline = multiline;
  75         }
  76
  77         protected Point getInitialSize() {
  78                 return new Point(300, 250);
  79         }
  80
  81         protected Control createDialogArea(Composite parent) {
  82                 Composite dialogarea = (Composite) super.createDialogArea(parent);
  83                 dialogarea.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  84                 Composite composite = new Composite(dialogarea, SWT.NONE);
  85                 composite.setLayout(new GridLayout(2, false));
  86                 composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
  87                 valueT = createLT(composite, label);
  88
  89                 setMessage(message, IMessageProvider.NONE);
  90
  91                 parent.pack();
  92                 return composite;
  93         }
  94
  95         @Override
  96         protected void okPressed() {
  97                 value = valueT.getText();
  98                 super.okPressed();
  99         }
 100
 101         /** Creates label and text. */
 102         protected Text createLT(Composite parent, String label) {
 103                 new Label(parent, SWT.NONE).setText(label);
 104                 Text text = new Text(parent, SWT.SINGLE | SWT.LEAD | SWT.BORDER
 105                                 | (multiline ? SWT.MULTI : SWT.NONE));
 106                 text.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
 107                 return text;
 108         }
 109
 110         protected void configureShell(Shell shell) {
 111                 super.configureShell(shell);
 112                 shell.setText(title);
 113         }
 114
 115         public String getString() {
 116                 return value;
 117         }
 118
 119         public Long getLong() {
 120                 return Long.valueOf(getString());
 121         }
 122
 123         public Double getDouble() {
 124                 return Double.valueOf(getString());
 125         }
 126 }