org.argeo.eclipse.ui/src/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.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 }