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   1 package net.sourceforge.phpdt.externaltools.internal.ui;
   2
   3 import java.util.ArrayList;
   4 import java.util.List;
   5
   6 import org.eclipse.core.resources.IContainer;
   7 import org.eclipse.core.resources.IFile;
   8 import org.eclipse.core.resources.IResource;
   9 import org.eclipse.core.runtime.CoreException;
  10 import org.eclipse.core.runtime.IAdaptable;
  11 import org.eclipse.jface.dialogs.MessageDialog;
  12 import org.eclipse.jface.viewers.ISelectionChangedListener;
  13 import org.eclipse.jface.viewers.ITreeContentProvider;
  14 import org.eclipse.jface.viewers.SelectionChangedEvent;
  15 import org.eclipse.swt.SWT;
  16 import org.eclipse.swt.events.ControlEvent;
  17 import org.eclipse.swt.events.ControlListener;
  18 import org.eclipse.swt.widgets.Button;
  19 import org.eclipse.swt.widgets.Composite;
  20 import org.eclipse.swt.widgets.Control;
  21 import org.eclipse.swt.widgets.Shell;
  22 import org.eclipse.swt.widgets.TableColumn;
  23 import net.sourceforge.phpdt.externaltools.model.StringMatcher;
  24 import org.eclipse.ui.model.WorkbenchContentProvider;
  25 import org.eclipse.ui.model.WorkbenchLabelProvider;
  26
  27 /**
  28  * Dialog for selecting a file in the workspace. Derived from
  29  * org.eclipse.ui.dialogs.ResourceSelectionDialog
  30  */
  31 public class FileSelectionDialog extends MessageDialog {
  32         // the root element to populate the viewer with
  33         private IAdaptable                                      root;
  34
  35         // the visual selection widget group
  36         private TreeAndListGroup        selectionGroup;
  37         // constants
  38         private final static int                        SIZING_SELECTION_WIDGET_WIDTH = 400;
  39         private final static int                        SIZING_SELECTION_WIDGET_HEIGHT = 300;
  40         /**
  41          * The file selected by the user.
  42          */
  43         private IFile result= null;
  44         /**
  45          * String matcher used to filter content
  46          */
  47         private StringMatcher stringMatcher= null;
  48 /**
  49  * Creates a resource selection dialog rooted at the given element.
  50  *
  51  * @param parentShell the parent shell
  52  * @param rootElement the root element to populate this dialog with
  53  * @param message the message to be displayed at the top of this dialog, or
  54  *    <code>null</code> to display a default message
  55  */
  56 public FileSelectionDialog(Shell parentShell, IAdaptable rootElement, String message) {
  57         super(parentShell, "Add Build File", null, message, MessageDialog.NONE, new String[] {"Ok", "Cancel"}, 0);
  58         root = rootElement;
  59         setShellStyle(getShellStyle() | SWT.RESIZE);
  60 }
  61 /**
  62  * Limits the files displayed in this dialog to files matching the given
  63  * pattern. The string can be a filename or a regular expression containing
  64  * '*' for any series of characters or '?' for any single character.
  65  *
  66  * @param pattern a pattern used to filter the displayed files or
  67  * <code>null</code> to display all files. If a pattern is supplied, only files
  68  * whose names match the given pattern will be available for selection.
  69  * @param ignoreCase if true, case is ignored. If the pattern argument is
  70  * <code>null</code>, this argument is ignored.
  71  */
  72 public void setFileFilter(String pattern, boolean ignoreCase) {
  73         if (pattern != null) {
  74                 stringMatcher= new StringMatcher(pattern, ignoreCase, false);
  75         } else {
  76                 stringMatcher= null;
  77         }
  78 }
  79 /* (non-Javadoc)
  80  * Method declared in Window.
  81  */
  82 protected void configureShell(Shell shell) {
  83         super.configureShell(shell);
  84         //WorkbenchHelp.setHelp(shell, IHelpContextIds.RESOURCE_SELECTION_DIALOG);
  85 }
  86
  87 protected void createButtonsForButtonBar(Composite parent) {
  88         super.createButtonsForButtonBar(parent);
  89         initializeDialog();
  90 }
  91 /* (non-Javadoc)
  92  * Method declared on Dialog.
  93  */
  94 protected Control createDialogArea(Composite parent) {
  95         // page group
  96         Composite composite = (Composite) super.createDialogArea(parent);
  97
  98         //create the input element, which has the root resource
  99         //as its only child
 100
 101         selectionGroup =
 102                 new TreeAndListGroup(
 103                         composite,
 104                         root,
 105                         getResourceProvider(IResource.FOLDER | IResource.PROJECT | IResource.ROOT),
 106                         new WorkbenchLabelProvider(),
 107                         getResourceProvider(IResource.FILE),
 108                         new WorkbenchLabelProvider(),
 109                         SWT.NONE,
 110                         // since this page has no other significantly-sized
 111                         // widgets we need to hardcode the combined widget's
 112                         // size, otherwise it will open too small
 113                         SIZING_SELECTION_WIDGET_WIDTH,
 114                         SIZING_SELECTION_WIDGET_HEIGHT);
 115
 116         composite.addControlListener(new ControlListener() {
 117                 public void controlMoved(ControlEvent e) {};
 118                 public void controlResized(ControlEvent e) {
 119                         //Also try and reset the size of the columns as appropriate
 120                         TableColumn[] columns = selectionGroup.getListTable().getColumns();
 121                         for (int i = 0; i < columns.length; i++) {
 122                                 columns[i].pack();
 123                         }
 124                 }
 125         });
 126
 127         return composite;
 128 }
 129 /**
 130  * Returns a content provider for <code>IResource</code>s that returns
 131  * only children of the given resource type.
 132  */
 133 private ITreeContentProvider getResourceProvider(final int resourceType) {
 134         return new WorkbenchContentProvider() {
 135                 public Object[] getChildren(Object o) {
 136                         if (o instanceof IContainer) {
 137                                 IResource[] members = null;
 138                                 try {
 139                                         members = ((IContainer)o).members();
 140                                         List accessibleMembers= new ArrayList(members.length);
 141                                         for (int i = 0; i < members.length; i++) {
 142                                                 IResource resource = members[i];
 143                                                 if (resource.isAccessible()) {
 144                                                         accessibleMembers.add(resource);
 145                                                 }
 146                                         }
 147                                         members= (IResource[])accessibleMembers.toArray(new IResource[accessibleMembers.size()]);
 148                                 } catch (CoreException e) {
 149                                         //just return an empty set of children
 150                                         return new Object[0];
 151                                 }
 152
 153                                 //filter out the desired resource types
 154                                 ArrayList results = new ArrayList();
 155                                 for (int i = 0; i < members.length; i++) {
 156                                         //And the test bits with the resource types to see if they are what we want
 157                                         if ((members[i].getType() & resourceType) > 0) {
 158                                                 if (members[i].getType() == IResource.FILE &&
 159                                                                 stringMatcher != null &&
 160                                                                 !stringMatcher.match(members[i].getName())) {
 161                                                         continue;
 162                                                 }
 163                                                 results.add(members[i]);
 164                                         }
 165                                 }
 166                                 return results.toArray();
 167                         } else {
 168                                 return new Object[0];
 169                         }
 170                 }
 171         };
 172 }
 173 /**
 174  * Initializes this dialog's controls.
 175  */
 176 private void initializeDialog() {
 177         selectionGroup.addSelectionChangedListener(new ISelectionChangedListener() {
 178                 public void selectionChanged(SelectionChangedEvent event) {
 179                         getOkButton().setEnabled(!selectionGroup.getListTableSelection().isEmpty());
 180                 }
 181         });
 182
 183         getOkButton().setEnabled(false);
 184 }
 185
 186 /**
 187  * Returns this dialog's OK button.
 188  */
 189 protected Button getOkButton() {
 190         return getButton(0);
 191 }
 192 /**
 193  * Returns the file the user chose or <code>null</code> if none.
 194  */
 195 public IFile getResult() {
 196         return result;
 197 }
 198
 199 protected void buttonPressed(int buttonId) {
 200         if (buttonId == 0) {
 201                 Object resource= selectionGroup.getListTableSelection().getFirstElement();
 202                 if (resource instanceof IFile) {
 203                         result = (IFile) resource;
 204                 }
 205         }
 206         super.buttonPressed(buttonId);
 207 }
 208
 209 }