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   1 package com.quantum.wizards;
   2
   3 import java.io.File;
   4 import java.io.FileWriter;
   5 import java.io.IOException;
   6
   7 import javax.xml.parsers.ParserConfigurationException;
   8
   9 import com.quantum.Messages;
  10 import com.quantum.QuantumPlugin;
  11 import com.quantum.model.Bookmark;
  12 import com.quantum.model.BookmarkCollection;
  13 import com.quantum.model.xml.ModelToXMLConverter;
  14 import com.quantum.ui.dialog.ExceptionDisplayDialog;
  15 import com.quantum.util.xml.XMLHelper;
  16
  17 import org.eclipse.jface.viewers.CheckStateChangedEvent;
  18 import org.eclipse.jface.viewers.CheckboxTreeViewer;
  19 import org.eclipse.jface.viewers.ICheckStateListener;
  20 import org.eclipse.jface.viewers.ILabelProvider;
  21 import org.eclipse.jface.viewers.ILabelProviderListener;
  22 import org.eclipse.jface.viewers.ITreeContentProvider;
  23 import org.eclipse.jface.viewers.Viewer;
  24 import org.eclipse.jface.wizard.WizardPage;
  25 import org.eclipse.swt.SWT;
  26 import org.eclipse.swt.events.ModifyEvent;
  27 import org.eclipse.swt.events.ModifyListener;
  28 import org.eclipse.swt.events.SelectionAdapter;
  29 import org.eclipse.swt.events.SelectionEvent;
  30 import org.eclipse.swt.graphics.Image;
  31 import org.eclipse.swt.layout.GridData;
  32 import org.eclipse.swt.layout.GridLayout;
  33 import org.eclipse.swt.widgets.Button;
  34 import org.eclipse.swt.widgets.Composite;
  35 import org.eclipse.swt.widgets.FileDialog;
  36 import org.eclipse.swt.widgets.Label;
  37 import org.eclipse.swt.widgets.Text;
  38 import org.w3c.dom.Document;
  39
  40 /**
  41  * @author BC
  42  */
  43 public class ExportBookmarkWizardPage extends WizardPage {
  44
  45     public class ContentProvider implements ITreeContentProvider {
  46
  47         public Object[] getChildren(Object parentElement) {
  48             if (parentElement instanceof BookmarkCollection) {
  49                 return ((BookmarkCollection) parentElement).getBookmarks();
  50             } else {
  51                 return new Object[0];
  52             }
  53         }
  54         public Object getParent(Object element) {
  55             if (element instanceof Bookmark) {
  56                 return BookmarkCollection.getInstance();
  57             } else {
  58                 return null;
  59             }
  60         }
  61         public boolean hasChildren(Object element) {
  62             if (element instanceof BookmarkCollection) {
  63                 return ((BookmarkCollection) element).getBookmarks().length > 0;
  64             } else {
  65                 return false;
  66             }
  67         }
  68         public Object[] getElements(Object inputElement) {
  69             return getChildren(inputElement);
  70         }
  71         public void dispose() {
  72         }
  73         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  74         }
  75     }
  76
  77     public class LabelProvider implements ILabelProvider {
  78
  79         public Image getImage(Object element) {
  80             if (element instanceof Bookmark) {
  81                 return QuantumPlugin.getImage("bookmarks.gif");
  82             } else {
  83                 return null;
  84             }
  85         }
  86
  87         public String getText(Object element) {
  88
  89             if (element instanceof Bookmark) {
  90                 return ((Bookmark) element).getName();
  91             } else {
  92                 return element.toString();
  93             }
  94         }
  95
  96         public void addListener(ILabelProviderListener listener) {
  97         }
  98
  99         public void dispose() {
 100         }
 101
 102         public boolean isLabelProperty(Object element, String property) {
 103             return false;
 104         }
 105
 106         public void removeListener(ILabelProviderListener listener) {
 107         }
 108     }
 109
 110     private CheckboxTreeViewer treeViewer;
 111     private Text fileNameText;
 112
 113     private boolean sourceIsSelected = false;
 114     private boolean destinationIsSelected = false;
 115
 116     /**
 117      * @param pageName
 118      */
 119     protected ExportBookmarkWizardPage() {
 120         super("page1");
 121         setTitle(Messages.getString(getClass(), "title"));
 122     }
 123
 124     public void createControl(Composite pageContainer) {
 125         this.sourceIsSelected = false;
 126         this.destinationIsSelected = false;
 127
 128         Composite composite = new Composite(pageContainer, SWT.NULL);
 129         composite.setLayout(new GridLayout());
 130         composite.setLayoutData(
 131             new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
 132
 133         this.treeViewer = new CheckboxTreeViewer(composite,
 134             SWT.CHECK | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
 135         this.treeViewer.setContentProvider(new ContentProvider());
 136         this.treeViewer.setLabelProvider(new LabelProvider());
 137         this.treeViewer.setInput(BookmarkCollection.getInstance());
 138         selectAll();
 139
 140         this.treeViewer.addCheckStateListener(new ICheckStateListener() {
 141             public void checkStateChanged(CheckStateChangedEvent event) {
 142                 setSourceIsSelected(
 143                     ExportBookmarkWizardPage.this.treeViewer.getCheckedElements().length > 0);
 144             }
 145         });
 146
 147         GridData data = new GridData();
 148         data.horizontalAlignment = GridData.HORIZONTAL_ALIGN_FILL;
 149         data.verticalAlignment = GridData.VERTICAL_ALIGN_BEGINNING;
 150         data.grabExcessHorizontalSpace = true;
 151         data.heightHint = 200;
 152         data.widthHint = 400;
 153         this.treeViewer.getControl().setLayoutData(data);
 154
 155         Composite buttons = new Composite(composite, SWT.NULL);
 156         buttons.setLayout(new GridLayout(2, false));
 157         buttons.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING));
 158
 159         Button selectAll = new Button(buttons, SWT.NONE);
 160         selectAll.setText(Messages.getString(getClass(), "selectAll"));
 161         selectAll.addSelectionListener(new SelectionAdapter() {
 162             public void widgetSelected(SelectionEvent event) {
 163                 selectAll();
 164             }
 165         });
 166
 167         Button deselectAll = new Button(buttons, SWT.NONE);
 168         deselectAll.setText(Messages.getString(getClass(), "deselectAll"));
 169         deselectAll.addSelectionListener(new SelectionAdapter() {
 170             public void widgetSelected(SelectionEvent event) {
 171                 deselectAll();
 172             }
 173         });
 174
 175         createDestinationArea(composite);
 176
 177         setControl(composite);
 178     }
 179
 180     private void createDestinationArea(Composite composite) {
 181         GridData data;
 182         Composite fileArea = new Composite(composite, SWT.NULL);
 183         fileArea.setLayout(new GridLayout(3, false));
 184         fileArea.setLayoutData(
 185             new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
 186         Label label = new Label(fileArea, SWT.NONE);
 187         label.setText("File name:");
 188
 189         this.fileNameText = new Text(fileArea, SWT.BORDER);
 190         data = new GridData();
 191         data.horizontalAlignment = GridData.HORIZONTAL_ALIGN_FILL;
 192         data.widthHint = 300;
 193         this.fileNameText.setLayoutData(data);
 194         this.fileNameText.addModifyListener(new ModifyListener() {
 195             public void modifyText(ModifyEvent event) {
 196                 String text = ((Text) event.getSource()).getText();
 197                 setDestinationIsSelected(text != null && text.trim().length() > 0);
 198             }
 199         });
 200
 201         Button button = new Button(fileArea, SWT.NONE);
 202         button.setText("Browse");
 203         button.addSelectionListener(new SelectionAdapter() {
 204             public void widgetSelected(SelectionEvent event) {
 205                 promptForFile();
 206             }
 207         });
 208     }
 209
 210     private void setSourceIsSelected(boolean selected) {
 211         this.sourceIsSelected = selected;
 212         setPageComplete(selected & this.destinationIsSelected);
 213     }
 214
 215     private void setDestinationIsSelected(boolean selected) {
 216         this.destinationIsSelected = selected;
 217         setPageComplete(selected & this.sourceIsSelected);
 218     }
 219
 220     protected void promptForFile() {
 221
 222         FileDialog dialog = new FileDialog(getShell(), SWT.SAVE);
 223         dialog.setFilterExtensions(new String[] { "xml" });
 224         dialog.setFilterNames(new String[] { "XML Files (*.xml)"});
 225         String filename = dialog.open();
 226         if (filename != null) {
 227             this.fileNameText.setText(filename);
 228         }
 229     }
 230     protected void deselectAll() {
 231         this.treeViewer.setCheckedElements(new Object[0]);
 232         setSourceIsSelected(false);
 233     }
 234
 235     protected void selectAll() {
 236         Bookmark[] bookmarks = BookmarkCollection.getInstance().getBookmarks();
 237         this.treeViewer.setCheckedElements(bookmarks);
 238         setSourceIsSelected(bookmarks.length > 0);
 239     }
 240
 241     public boolean finish() {
 242
 243         String fileName = this.fileNameText.getText();
 244         File file = new File(fileName);
 245         if (file.exists()) {
 246             // prompt for overwrite
 247         } else if (!file.getParentFile().exists()) {
 248             // do what?
 249         }
 250
 251         try {
 252             Object[] bookmarks = this.treeViewer.getCheckedElements();
 253             Document document = XMLHelper.createEmptyDocument();
 254             ModelToXMLConverter.getInstance().createRoot(document);
 255
 256             for (int i = 0, length = (bookmarks == null) ? 0 : bookmarks.length;
 257                 i < length;
 258                 i++) {
 259                 ModelToXMLConverter.getInstance().convert(
 260                     document.getDocumentElement(), (Bookmark) bookmarks[i]);
 261             }
 262
 263             FileWriter writer = new FileWriter(file);
 264             try {
 265                 XMLHelper.write(writer, document);
 266             } finally {
 267                 writer.close();
 268             }
 269         } catch (IOException e) {
 270             ExceptionDisplayDialog.openError(getShell(),
 271                 Messages.getString(getClass(), "error.IOException.title"),
 272                 Messages.getString(getClass(), "error.IOException.message",
 273                     new Object[] { fileName }), e);
 274         } catch (ParserConfigurationException e) {
 275             ExceptionDisplayDialog.openError(getShell(),
 276                 Messages.getString(getClass(), "error.IOException.title"),
 277                 Messages.getString(getClass(), "error.IOException.message",
 278                     new Object[] { fileName }), e);
 279         }
 280
 281         return true;
 282     }
 283 }