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

   1 /**********************************************************************
   2  * Copyright (c) 2005, 2008 IBM Corporation and others.
   3  * Copyright (c) 2011, 2012 Ericsson.
   4  *
   5  * All rights reserved.   This program and the accompanying materials
   6  * are made available under the terms of the Eclipse Public License v1.0
   7  * which accompanies this distribution, and is available at
   8  * http://www.eclipse.org/legal/epl-v10.html
   9  *
  10  * Contributors:
  11  * IBM - Initial API and implementation
  12  * Bernd Hufmann - Updated for TMF
  13  **********************************************************************/
  14 package org.eclipse.linuxtools.tmf.ui.views.uml2sd.dialogs;
  15
  16 import java.text.MessageFormat;
  17
  18 import org.eclipse.jface.dialogs.Dialog;
  19 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.handlers.provider.ISDAdvancedPagingProvider;
  20 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.util.SDMessages;
  21 import org.eclipse.swt.SWT;
  22 import org.eclipse.swt.layout.FillLayout;
  23 import org.eclipse.swt.layout.GridData;
  24 import org.eclipse.swt.widgets.Composite;
  25 import org.eclipse.swt.widgets.Control;
  26 import org.eclipse.swt.widgets.Group;
  27 import org.eclipse.swt.widgets.Label;
  28 import org.eclipse.swt.widgets.Text;
  29 import org.eclipse.ui.IViewPart;
  30
  31 /**
  32  * Class implementation of the pages dialog.<br>
  33  *
  34  * It is associated to an SDView and to a ISDAdvancedPagingProvider.<br>
  35  *
  36  * @version 1.0
  37  * @author sveyrier
  38  */
  39 public class PagesDialog extends Dialog {
  40
  41     // ------------------------------------------------------------------------
  42     // Attributes
  43     // ------------------------------------------------------------------------
  44
  45     /**
  46      * viewer and provided are kept here as attributes
  47      */
  48     protected ISDAdvancedPagingProvider fProvider = null;
  49
  50     /** Current page */
  51     protected TextArea fCurrentPage;
  52
  53     /** Comment label */
  54     protected Label fTotalPageComment;
  55
  56     // ------------------------------------------------------------------------
  57     // Constructors
  58     // ------------------------------------------------------------------------
  59
  60     /**
  61      * Standard constructor
  62      *
  63      * @param view The sequence diagram view reference
  64      * @param provider The paging provider reference
  65      */
  66     public PagesDialog(IViewPart view, ISDAdvancedPagingProvider provider) {
  67         super(view.getSite().getShell());
  68         fProvider = provider;
  69         setShellStyle(SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
  70     }
  71
  72     // ------------------------------------------------------------------------
  73     // Methods
  74     // ------------------------------------------------------------------------
  75
  76     /*
  77      * (non-Javadoc)
  78      * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
  79      */
  80     @Override
  81     public Control createDialogArea(Composite parent) {
  82
  83         Group ret = new Group(parent, SWT.NONE);
  84         GridData data = new GridData();
  85         data.grabExcessHorizontalSpace = true;
  86         data.horizontalAlignment = GridData.FILL;
  87         ret.setLayoutData(data);
  88         ret.setText(SDMessages._67);
  89
  90         FillLayout fillLayout = new FillLayout(SWT.VERTICAL);
  91         ret.setLayout(fillLayout);
  92
  93         Label label = new Label(ret, SWT.NONE);
  94         label.setText(SDMessages._75);
  95
  96         fCurrentPage = new TextArea(ret);
  97         fCurrentPage.setBounds(1, fProvider.pagesCount());
  98         fCurrentPage.setValue(fProvider.currentPage() + 1);
  99
 100         fTotalPageComment = new Label(ret, SWT.NONE);
 101         fTotalPageComment.setAlignment(SWT.RIGHT);
 102
 103         updateComments();
 104
 105         getShell().setText(SDMessages._68);
 106         return ret;
 107     }
 108
 109     /*
 110      * (non-Javadoc)
 111      * @see org.eclipse.jface.dialogs.Dialog#okPressed()
 112      */
 113     @Override
 114     public void okPressed() {
 115         int currentPageValue = fCurrentPage.getValue() - 1;
 116         super.close();
 117         fProvider.pageNumberChanged(currentPageValue);
 118     }
 119
 120     /**
 121      * Updates the comments texts.
 122      */
 123     protected void updateComments() {
 124         int pages = Math.max(0, fProvider.pagesCount());
 125         StringBuffer totalPageCommentText = new StringBuffer();
 126         totalPageCommentText.append(SDMessages._70);
 127         totalPageCommentText.append(pages);
 128         totalPageCommentText.append(" "); //$NON-NLS-1$
 129         if (pages == 0) {
 130             totalPageCommentText.append(SDMessages._71);
 131         } else if (pages == 1) {
 132             totalPageCommentText.append(SDMessages._72);
 133         } else {
 134             totalPageCommentText.append(SDMessages._73);
 135         }
 136         fTotalPageComment.setText(totalPageCommentText.toString());
 137     }
 138
 139
 140     // ------------------------------------------------------------------------
 141     // Helper classes
 142     // ------------------------------------------------------------------------
 143     /**
 144      * This is a Text Control that accepts only digits and ensures that bounds are respected
 145      */
 146     protected static class TextArea {
 147         /**
 148          * The text field.
 149          */
 150         protected Text fText;
 151         /**
 152          * The minimum page value
 153          */
 154         int fMin;
 155         /**
 156          * The maximum page value
 157          */
 158         int fMax;
 159
 160         /**
 161          * Constructor
 162          *
 163          * @param parent The paren composite
 164          */
 165         public TextArea(Composite parent) {
 166             fText = new Text(parent, SWT.SINGLE | SWT.BORDER | SWT.RIGHT);
 167             fText.setTextLimit(10);
 168         }
 169
 170         /**
 171          * Sets the page value.
 172          *
 173          * @param page The page value
 174          */
 175         public void setValue(int page) {
 176             int value = Math.max(fMin, Math.min(fMax, page));
 177             fText.setText(Integer.toString(value));
 178         }
 179
 180         /**
 181          * Returns the page value.
 182          *
 183          * @return the page value
 184          */
 185         public int getValue() {
 186             int res;
 187             try {
 188                 res = Integer.parseInt(fText.getText());
 189             } catch (Exception e) {
 190                 // ignored
 191                 res = 0;
 192             }
 193             return Math.max(fMin, Math.min(fMax, res));
 194         }
 195
 196         /**
 197          * Sets the minimum and maximum page values.
 198          *
 199          * @param min A minimum page value
 200          * @param max A maximum page value
 201          */
 202         public void setBounds(int min, int max) {
 203             fMin = Math.max(0, min);
 204             fMax = Math.max(fMin, max);
 205             Integer tab[] = new Integer[2];
 206             tab[0] = Integer.valueOf(fMin);
 207             tab[1] = Integer.valueOf(fMax);
 208             fText.setToolTipText(MessageFormat.format(SDMessages._69, (Object[]) tab));
 209         }
 210     }
 211
 212 }