base/runtime/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/dialogs/SingleValue.java

   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.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 static final long serialVersionUID = 2843538207460082349L;
  35
  36         private Text valueT;
  37         private String value;
  38         private final String title, message, label;
  39         private final Boolean multiline;
  40
  41         public static String ask(String label, String message) {
  42                 SingleValue svd = new SingleValue(label, message);
  43                 if (svd.open() == Dialog.OK)
  44                         return svd.getString();
  45                 else
  46                         return null;
  47         }
  48
  49         public static Long askLong(String label, String message) {
  50                 SingleValue svd = new SingleValue(label, message);
  51                 if (svd.open() == Dialog.OK)
  52                         return svd.getLong();
  53                 else
  54                         return null;
  55         }
  56
  57         public static Double askDouble(String label, String message) {
  58                 SingleValue svd = new SingleValue(label, message);
  59                 if (svd.open() == Dialog.OK)
  60                         return svd.getDouble();
  61                 else
  62                         return null;
  63         }
  64
  65         public SingleValue(String label, String message) {
  66                 this(Display.getDefault().getActiveShell(), label, message, label,
  67                                 false);
  68         }
  69
  70         public SingleValue(Shell parentShell, String title, String message,
  71                         String label, Boolean multiline) {
  72                 super(parentShell);
  73                 this.title = title;
  74                 this.message = message;
  75                 this.label = label;
  76                 this.multiline = multiline;
  77         }
  78
  79         protected Point getInitialSize() {
  80                 return new Point(300, 250);
  81         }
  82
  83         protected Control createDialogArea(Composite parent) {
  84                 Composite dialogarea = (Composite) super.createDialogArea(parent);
  85                 dialogarea.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  86                 Composite composite = new Composite(dialogarea, SWT.NONE);
  87                 composite.setLayout(new GridLayout(2, false));
  88                 composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
  89                 valueT = createLT(composite, label);
  90
  91                 setMessage(message, IMessageProvider.NONE);
  92
  93                 parent.pack();
  94                 return composite;
  95         }
  96
  97         @Override
  98         protected void okPressed() {
  99                 value = valueT.getText();
 100                 super.okPressed();
 101         }
 102
 103         /** Creates label and text. */
 104         protected Text createLT(Composite parent, String label) {
 105                 new Label(parent, SWT.NONE).setText(label);
 106                 Text text = new Text(parent, SWT.SINGLE | SWT.LEAD | SWT.BORDER
 107                                 | (multiline ? SWT.MULTI : SWT.NONE));
 108                 text.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
 109                 return text;
 110         }
 111
 112         protected void configureShell(Shell shell) {
 113                 super.configureShell(shell);
 114                 shell.setText(title);
 115         }
 116
 117         public String getString() {
 118                 return value;
 119         }
 120
 121         public Long getLong() {
 122                 return Long.valueOf(getString());
 123         }
 124
 125         public Double getDouble() {
 126                 return Double.valueOf(getString());
 127         }
 128 }