org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/views/uml2sd/dialogs/PagesDialog.java

   1 /**********************************************************************
   2  * Copyright (c) 2005, 2013 IBM Corporation, Ericsson
   3  * All rights reserved.   This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM - Initial API and implementation
  10  *     Bernd Hufmann - Updated for TMF
  11  **********************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.ui.views.uml2sd.dialogs;
  14
  15 import java.text.MessageFormat;
  16
  17 import org.eclipse.jface.dialogs.Dialog;
  18 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.handlers.provider.ISDAdvancedPagingProvider;
  19 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.util.SDMessages;
  20 import org.eclipse.swt.SWT;
  21 import org.eclipse.swt.layout.FillLayout;
  22 import org.eclipse.swt.layout.GridData;
  23 import org.eclipse.swt.widgets.Composite;
  24 import org.eclipse.swt.widgets.Control;
  25 import org.eclipse.swt.widgets.Group;
  26 import org.eclipse.swt.widgets.Label;
  27 import org.eclipse.swt.widgets.Text;
  28 import org.eclipse.ui.IViewPart;
  29
  30 /**
  31  * Class implementation of the pages dialog.<br>
  32  *
  33  * It is associated to an SDView and to a ISDAdvancedPagingProvider.<br>
  34  *
  35  * @version 1.0
  36  * @author sveyrier
  37  */
  38 public class PagesDialog extends Dialog {
  39
  40     // ------------------------------------------------------------------------
  41     // Attributes
  42     // ------------------------------------------------------------------------
  43
  44     /**
  45      * viewer and provided are kept here as attributes
  46      */
  47     protected ISDAdvancedPagingProvider fProvider = null;
  48
  49     /** Current page */
  50     protected TextArea fCurrentPage;
  51
  52     /** Comment label */
  53     protected Label fTotalPageComment;
  54
  55     // ------------------------------------------------------------------------
  56     // Constructors
  57     // ------------------------------------------------------------------------
  58
  59     /**
  60      * Standard constructor
  61      *
  62      * @param view The sequence diagram view reference
  63      * @param provider The paging provider reference
  64      */
  65     public PagesDialog(IViewPart view, ISDAdvancedPagingProvider provider) {
  66         super(view.getSite().getShell());
  67         fProvider = provider;
  68         setShellStyle(SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
  69     }
  70
  71     // ------------------------------------------------------------------------
  72     // Methods
  73     // ------------------------------------------------------------------------
  74
  75     /*
  76      * (non-Javadoc)
  77      * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
  78      */
  79     @Override
  80     public Control createDialogArea(Composite parent) {
  81
  82         Group ret = new Group(parent, SWT.NONE);
  83         GridData data = new GridData();
  84         data.grabExcessHorizontalSpace = true;
  85         data.horizontalAlignment = GridData.FILL;
  86         ret.setLayoutData(data);
  87         ret.setText(SDMessages._67);
  88
  89         FillLayout fillLayout = new FillLayout(SWT.VERTICAL);
  90         ret.setLayout(fillLayout);
  91
  92         Label label = new Label(ret, SWT.NONE);
  93         label.setText(SDMessages._75);
  94
  95         fCurrentPage = new TextArea(ret);
  96         fCurrentPage.setBounds(1, fProvider.pagesCount());
  97         fCurrentPage.setValue(fProvider.currentPage() + 1);
  98
  99         fTotalPageComment = new Label(ret, SWT.NONE);
 100         fTotalPageComment.setAlignment(SWT.RIGHT);
 101
 102         updateComments();
 103
 104         getShell().setText(SDMessages._68);
 105         return ret;
 106     }
 107
 108     /*
 109      * (non-Javadoc)
 110      * @see org.eclipse.jface.dialogs.Dialog#okPressed()
 111      */
 112     @Override
 113     public void okPressed() {
 114         int currentPageValue = fCurrentPage.getValue() - 1;
 115         super.close();
 116         fProvider.pageNumberChanged(currentPageValue);
 117     }
 118
 119     /**
 120      * Updates the comments texts.
 121      */
 122     protected void updateComments() {
 123         int pages = Math.max(0, fProvider.pagesCount());
 124         StringBuffer totalPageCommentText = new StringBuffer();
 125         totalPageCommentText.append(SDMessages._70);
 126         totalPageCommentText.append(pages);
 127         totalPageCommentText.append(" "); //$NON-NLS-1$
 128         if (pages == 0) {
 129             totalPageCommentText.append(SDMessages._71);
 130         } else if (pages == 1) {
 131             totalPageCommentText.append(SDMessages._72);
 132         } else {
 133             totalPageCommentText.append(SDMessages._73);
 134         }
 135         fTotalPageComment.setText(totalPageCommentText.toString());
 136     }
 137
 138
 139     // ------------------------------------------------------------------------
 140     // Helper classes
 141     // ------------------------------------------------------------------------
 142     /**
 143      * This is a Text Control that accepts only digits and ensures that bounds are respected
 144      */
 145     protected static class TextArea {
 146         /**
 147          * The text field.
 148          */
 149         protected Text fText;
 150         /**
 151          * The minimum page value
 152          */
 153         int fMin;
 154         /**
 155          * The maximum page value
 156          */
 157         int fMax;
 158
 159         /**
 160          * Constructor
 161          *
 162          * @param parent The paren composite
 163          */
 164         public TextArea(Composite parent) {
 165             fText = new Text(parent, SWT.SINGLE | SWT.BORDER | SWT.RIGHT);
 166             fText.setTextLimit(10);
 167         }
 168
 169         /**
 170          * Sets the page value.
 171          *
 172          * @param page The page value
 173          */
 174         public void setValue(int page) {
 175             int value = Math.max(fMin, Math.min(fMax, page));
 176             fText.setText(Integer.toString(value));
 177         }
 178
 179         /**
 180          * Returns the page value.
 181          *
 182          * @return the page value
 183          */
 184         public int getValue() {
 185             int res;
 186             try {
 187                 res = Integer.parseInt(fText.getText());
 188             } catch (Exception e) {
 189                 // ignored
 190                 res = 0;
 191             }
 192             return Math.max(fMin, Math.min(fMax, res));
 193         }
 194
 195         /**
 196          * Sets the minimum and maximum page values.
 197          *
 198          * @param min A minimum page value
 199          * @param max A maximum page value
 200          */
 201         public void setBounds(int min, int max) {
 202             fMin = Math.max(0, min);
 203             fMax = Math.max(fMin, max);
 204             Integer tab[] = new Integer[2];
 205             tab[0] = Integer.valueOf(fMin);
 206             tab[1] = Integer.valueOf(fMax);
 207             fText.setToolTipText(MessageFormat.format(SDMessages._69, (Object[]) tab));
 208         }
 209     }
 210
 211 }