Example usage for org.eclipse.jface.viewers StructuredSelection EMPTY

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In this page you can find the example usage for org.eclipse.jface.viewers StructuredSelection EMPTY.

Prototype

StructuredSelection EMPTY

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The canonical empty selection.

Usage

From source file:net.enilink.komma.edit.ui.commands.AbstractHandler.java

License:Open Source License

/**
 * Retrieves the current structured selection.
 * // w  w  w.  ja  va2s  .co  m
 * @return The current structured selection.
 */
protected IStructuredSelection getStructuredSelection(ExecutionEvent event) {
    ISelection selection = getSelection(event);
    return (selection instanceof StructuredSelection) ? (StructuredSelection) selection
            : StructuredSelection.EMPTY;
}

---

From source file:net.enilink.komma.edit.ui.dialogs.FilteredList.java

License:Open Source License

/**
 * Refreshes the dialog - has to be called in UI thread.
 *//*from w ww . j a  v a 2s  . c om*/
public void refresh() {
    if (list != null && !list.getTable().isDisposed()) {

        List<?> lastRefreshSelection = ((StructuredSelection) list.getSelection()).toList();

        list.setItemCount(contentProvider.getElements(null).length);
        list.refresh();

        if (list.getTable().getItemCount() > 0) {
            // preserve previous selection
            if (refreshWithLastSelection && lastRefreshSelection != null && lastRefreshSelection.size() > 0) {
                list.setSelection(new StructuredSelection(lastRefreshSelection));
            } else {
                refreshWithLastSelection = true;

                list.getTable().setSelection(0);

                list.getTable().notifyListeners(SWT.Selection, new Event());
            }
        } else {
            list.setSelection(StructuredSelection.EMPTY);
        }

    }

    scheduleProgressMessageRefresh();
}

---

From source file:net.refractions.udig.catalog.ui.operation.TransformPanel.java

License:Open Source License

protected Control createExpressionTable(Composite parent) {
    setLayout(new MigLayout("insets 0", "[grow,fill][]", "[][][][][grow,fill][][][][grow,fill][][]"));

    Label label = new Label(this, SWT.LEFT);
    label.setText("Transform");
    label.setLayoutData("cell 0 0 2 1,width pref!,left");

    Button button = new Button(this, SWT.CENTER);
    button.setText("Add");
    button.setLayoutData("cell 1 1 1 1,grow");
    button.addSelectionListener(new SelectionAdapter() {
        @Override/* w w  w  . ja v  a2s.  c  om*/
        public void widgetSelected(SelectionEvent e) {
            int row = table.getTable().getSelectionIndex();
            Definition definition = new Definition();
            definition.name = "";
            definition.expression = Expression.NIL;
            transform.add(row, definition);
            table.refresh();
            table.setSelection(new StructuredSelection(definition));
        }
    });

    button = new Button(this, SWT.CENTER);
    button.setText("Up");
    button.setLayoutData("cell 1 2 1 1,grow");
    button.addSelectionListener(new SelectionAdapter() {
        @Override
        public void widgetSelected(SelectionEvent e) {
            int row = table.getTable().getSelectionIndex();
            if (row == 0 || row == -1) {
                return;
            }
            row--;
            Definition definition = selectedDefinition();
            transform.remove(definition);
            transform.add(row, definition);
            table.refresh();
            table.setSelection(new StructuredSelection(definition));
        }
    });

    button = new Button(this, SWT.CENTER);
    button.setText("Down");
    button.setLayoutData("cell 1 3 1 1,grow");
    button.addSelectionListener(new SelectionAdapter() {
        @Override
        public void widgetSelected(SelectionEvent e) {
            int row = table.getTable().getSelectionIndex();
            if (row == transform.size() - 1 || row == -1) {
                return;
            }
            row++;
            Definition definition = selectedDefinition();
            transform.remove(definition);
            transform.add(row, definition);
            table.refresh();
            table.setSelection(new StructuredSelection(definition));
        }
    });

    button = new Button(this, SWT.CENTER);
    button.setText("Remove");
    button.setLayoutData("cell 1 5 1 1,grow");
    button.addSelectionListener(new SelectionAdapter() {
        @Override
        public void widgetSelected(SelectionEvent e) {
            int row = table.getTable().getSelectionIndex();
            if (row == -1) {
                return;
            }
            if (row > 0) {
                row = row - 1;
            }
            Definition definition = selectedDefinition();
            transform.remove(definition);
            table.refresh();

            if (row < transform.size()) {
                table.getTable().setSelection(row);
            } else {
                table.getTable().deselectAll();
            }
        }
    });

    table = new TableViewer(this, SWT.SINGLE | SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
    table.setContentProvider(ArrayContentProvider.getInstance());
    table.getControl().setLayoutData("cell 0 1 1 5, grow, height 200:50%:70%,width 300:pref:100%");

    TableViewerColumn column = new TableViewerColumn(table, SWT.NONE);
    column.getColumn().setWidth(100);
    column.getColumn().setMoveable(false);
    column.getColumn().setResizable(true);
    column.getColumn().setText("Attribute");
    column.setLabelProvider(new ColumnLabelProvider() {
        @Override
        public String getText(Object element) {
            Definition definition = (Definition) element;
            return definition.name;
        }
    });
    column = new TableViewerColumn(table, SWT.NONE);
    column.getColumn().setWidth(60);
    column.getColumn().setMoveable(false);
    column.getColumn().setResizable(true);
    column.getColumn().setText("Type");
    column.getColumn().setAlignment(SWT.CENTER);
    column.setLabelProvider(new ColumnLabelProvider() {
        @Override
        public String getText(Object element) {
            Definition definition = (Definition) element;
            return definition.binding == null ? NO_CONTENT : definition.binding.getSimpleName();
        }
    });
    column = new TableViewerColumn(table, SWT.NONE);
    column.getColumn().setWidth(140);
    column.getColumn().setMoveable(false);
    column.getColumn().setResizable(true);
    column.getColumn().setText("Expression");
    column.setLabelProvider(new ColumnLabelProvider() {
        @Override
        public String getText(Object element) {
            Definition definition = (Definition) element;
            return definition.expression == null ? NO_CONTENT : ECQL.toCQL(definition.expression);
        }
    });
    table.getTable().setHeaderVisible(true);
    table.getTable().setLinesVisible(true);
    table.addSelectionChangedListener(tableListener);

    Transfer[] types = new Transfer[] { UDigByteAndLocalTransfer.getInstance() };
    table.addDragSupport(DND.DROP_MOVE | DND.DROP_DEFAULT, types, new DragSourceAdapter() {
        @Override
        public void dragSetData(DragSourceEvent event) {
            IStructuredSelection selection = (IStructuredSelection) table.getSelection();

            if (UDigByteAndLocalTransfer.getInstance().isSupportedType(event.dataType)) {
                event.data = selection.getFirstElement();
            }
        }
    });

    // drag drop order support
    table.addDropSupport(DND.DROP_MOVE | DND.DROP_DEFAULT, types, new ViewerDropAdapter(table) {

        @Override
        public boolean validateDrop(Object target, int operation, TransferData transferType) {
            if (target instanceof Definition) {
                return true;
            } else {
                return false;
            }
        }

        @Override
        public boolean performDrop(Object data) {
            if (data instanceof Definition) {
                listen(false);

                int index = transform.indexOf(getCurrentTarget());

                // if (location == LOCATION_BEFORE)
                // index--;

                Definition definition = (Definition) data;
                transform.remove(definition);
                transform.add(index, definition);
                table.refresh();
                table.setSelection(new StructuredSelection(definition));

                listen(true);
                return true;
            }
            return false;
        }
    });

    definitionLabel = new Label(this, SWT.LEFT);
    definitionLabel.setText("Definition");
    definitionLabel.setLayoutData("cell 0 6 2 1, width pref!,left");

    feedbackDecorator = new ControlDecoration(definitionLabel, SWT.RIGHT | SWT.TOP);

    name = new Text(this, SWT.SINGLE | SWT.BORDER);
    name.setEditable(true);
    name.setText("");
    name.setLayoutData("cell 0 7 2 1");

    expression = new ExpressionViewer(this, SWT.MULTI);
    // expression.setInput(expressionInput);
    expression.getControl().setLayoutData("cell 0 8 2 1,height 200:50%:50%,width 300:pref:100%");
    expression.addSelectionChangedListener(expressionListener);

    // start up with nothing selected
    table.setSelection(StructuredSelection.EMPTY);
    enable(false);
    return this;
}

---

From source file:net.refractions.udig.core.SelectionProviderForwarder.java

License:Open Source License

@Override
public ISelection getSelection() {
    ISelection selection = provider.getSelection();
    if (selection instanceof IStructuredSelection && !selection.isEmpty()) {
        IStructuredSelection sel = (IStructuredSelection) selection;
        Object element = sel.getFirstElement();

        if (forwardType.isInstance(element)) {
            return selection;
        }/*  ww w .j  a v  a2s . c o m*/
        // check IAdaptable incase ILayer or another selection wants to play
        if (element instanceof IAdaptable) {
            IAdaptable adaptable = (IAdaptable) element;

            Object value = adaptable.getAdapter(forwardType);
            if (value != null) {
                return new StructuredSelection(value);
            }
        }
    }
    return StructuredSelection.EMPTY; // no dice!
}

---

From source file:net.refractions.udig.ui.filter.IExpressionViewer.java

License:Open Source License

/**
 * Returns the current selection for this provider.
 * /*from  w  w  w .j a  v a  2s  .c  om*/
 * @return Current expression from {@link #getExpression()} or {@link StructuredSelection#EMPTY} if not defined
 */
public ISelection getSelection() {
    if (expression != null) {
        return new StructuredSelection(expression);
    }
    return StructuredSelection.EMPTY;
}

---

From source file:net.refractions.udig.ui.filter.IExpressionViewer.java

License:Open Source License

/**
 * Used internally to update the expression and issue a {@link SelectionChangedEvent}.
 * //  w w  w .ja v a 2s  .c om
 * @param newExpression Expression used to update {@link #getExpression()} and the user interface components
 */
protected void internalUpdate(Expression newExpression) {
    if (this.expression == newExpression) {
        return;
    }
    String before = expression != null ? ECQL.toCQL(expression) : "(empty)";
    String after = newExpression != null ? ECQL.toCQL(newExpression) : "(empty)";
    if (!Utilities.equals(before, after)) {
        this.expression = newExpression;
        feedback(); // clear any outstanding feedback as our value matches our display now

        StructuredSelection selection = newExpression != null ? new StructuredSelection(newExpression)
                : StructuredSelection.EMPTY;
        fireSelectionChanged(new SelectionChangedEvent(this, selection));
    }
}

---

From source file:net.refractions.udig.ui.filter.IFilterViewer.java

License:Open Source License

/**
 * Returns the current selection for this provider.
 * /*from ww  w  .j a  v  a 2  s . c  o  m*/
 * @return Current filter from {@link #getFilter()} or {@link StructuredSelection#EMPTY} if not defined
 */
public ISelection getSelection() {
    if (filter != null) {
        return new StructuredSelection(filter);
    }
    return StructuredSelection.EMPTY;
}

---

From source file:net.refractions.udig.ui.filter.IFilterViewer.java

License:Open Source License

/**
 * Used internally to update the filter and issue a {@link SelectionChangedEvent}.
 * /*from   w ww.  ja  v a 2s  . co m*/
 * @param newFilter
 */
protected void internalUpdate(Filter newFilter) {
    if (this.filter == newFilter) {
        return;
    }
    String before = filter != null ? ECQL.toCQL(filter) : "(empty)";
    String after = newFilter != null ? ECQL.toCQL(newFilter) : "(empty)";
    if (!Utilities.equals(before, after)) {
        this.filter = newFilter;
        StructuredSelection selection = newFilter != null ? new StructuredSelection(newFilter)
                : StructuredSelection.EMPTY;
        SelectionChangedEvent selectionEvent = new SelectionChangedEvent(this, selection);
        fireSelectionChanged(selectionEvent);
    }
}

---

From source file:net.rim.ejde.internal.menu.DebugConfigurationsCommandHandler.java

License:Open Source License

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
    StructuredSelection selection = (StructuredSelection) HandlerUtil.getCurrentSelection(event);
    if (selection != null && !selection.isEmpty()) {
        AbstractLaunchShortcut ls = new FledgeLaunchShortcut();
        ls.openLaunchConfiguration(selection, "debug");
    } else {//  w  w  w  .  jav  a 2  s  .com
        DebugUITools.openLaunchConfigurationDialog(Display.getDefault().getShells()[0],
                StructuredSelection.EMPTY, "debug");
    }
    return null;
}

---

From source file:net.rim.ejde.internal.menu.NewProjectCommandHandler.java

License:Open Source License

private void doIt() {
    IWorkbench workbench = PlatformUI.getWorkbench();
    BlackBerryProjectWizard bbProjWiz = new BlackBerryProjectWizard();
    bbProjWiz.init(workbench, StructuredSelection.EMPTY);
    WizardDialog dialog = new WizardDialog(Display.getDefault().getShells()[0], bbProjWiz);
    dialog.create();/*from  w ww  .ja  v a2 s.c  o  m*/

    // Open wizard.
    dialog.open();
}

---

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