/*******************************************************************************
* Copyright (c) 2000, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Vlad Dumitrescu
*******************************************************************************/
package org.erlide.ui.prefs;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.ListenerList;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.jface.viewers.CheckStateChangedEvent;
import org.eclipse.jface.viewers.CheckboxTableViewer;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.ICheckStateListener;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TableLayout;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlAdapter;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.progress.UIJob;
import org.erlide.backend.BackendCore;
import org.erlide.backend.runtimeinfo.RuntimeInfoPreferencesSerializer;
import org.erlide.runtime.api.RuntimeCore;
import org.erlide.runtime.runtimeinfo.IRuntimeInfoCatalog;
import org.erlide.runtime.runtimeinfo.RuntimeInfo;
import org.erlide.runtime.runtimeinfo.RuntimeInfoCatalogData;
import org.erlide.ui.internal.ErlideUIPlugin;
import org.erlide.ui.util.SWTUtil;
/**
* A preference page that displays installed runtimes in a table. Runtimes can
* be added, removed, edited, and searched for.
* <p>
* It implements ISelectionProvider - it sends selection change events when the
* checked runtime in the table changes, or when the "use default" button check
* state changes.
* </p>
*/
public class RuntimePreferencePage extends PreferencePage implements
IAddDialogRequestor<RuntimeInfo>, ISelectionProvider, IWorkbenchPreferencePage {
private static final String RUNTIMES_PREFERENCE_PAGE = "RUNTIMES_PREFERENCE_PAGE";
private final IRuntimeInfoCatalog catalog;
private List<RuntimeInfo> runtimes;
private RuntimeInfo defaultRuntime;
private RuntimeInfo erlideRuntime;
/**
* The main list control
*/
protected CheckboxTableViewer fRuntimeList;
// Action buttons
private Button fAddButton;
private Button fRemoveButton;
private Button fEditButton;
private Button fDuplicateButton;
// column weights
protected float fWeight1 = 1 / 4F;
protected float fWeight2 = 4 / 9F;
// ignore column re-sizing when the table is being resized
protected boolean fResizingTable = false;
// index of column used for sorting
private int fSortColumn = 0;
/**
* Selection listeners (checked Backend changes)
*/
private final ListenerList fSelectionListeners = new ListenerList();
/**
* Previous selection
*/
private ISelection fPrevSelection = new StructuredSelection();
public RuntimePreferencePage() {
super();
setTitle("Installed Erlang runtimes ");
setDescription("Add, remove or edit runtime definitions.\n"
+ "The checked one will be used by default in new projects "
+ "to build the project's code.");
catalog = BackendCore.getRuntimeInfoCatalog();
performDefaults();
}
@Override
public void addSelectionChangedListener(final ISelectionChangedListener listener) {
fSelectionListeners.add(listener);
}
@Override
public ISelection getSelection() {
return new StructuredSelection(fRuntimeList.getCheckedElements());
}
@Override
public void removeSelectionChangedListener(final ISelectionChangedListener listener) {
fSelectionListeners.remove(listener);
}
@Override
public void setSelection(final ISelection selection) {
if (selection instanceof IStructuredSelection) {
if (fPrevSelection.isEmpty() || !selection.equals(fPrevSelection)) {
fPrevSelection = selection;
final Object vm = ((IStructuredSelection) selection).getFirstElement();
if (vm == null) {
fRuntimeList.setCheckedElements(new Object[0]);
} else {
fRuntimeList.setCheckedElements(new Object[] { vm });
fRuntimeList.reveal(vm);
}
fireSelectionChanged();
}
}
}
/**
* Fire current selection
*/
void fireSelectionChanged() {
final SelectionChangedEvent event = new SelectionChangedEvent(this,
getSelection());
final Object[] listeners = fSelectionListeners.getListeners();
for (final Object element : listeners) {
final ISelectionChangedListener listener = (ISelectionChangedListener) element;
listener.selectionChanged(event);
}
}
/**
* Sorts by VM name.
*/
protected void sortByName() {
fRuntimeList.setSorter(new ViewerSorter() {
@Override
public int compare(final Viewer viewer, final Object e1, final Object e2) {
if (e1 instanceof RuntimeInfo && e2 instanceof RuntimeInfo) {
final RuntimeInfo left = (RuntimeInfo) e1;
final RuntimeInfo right = (RuntimeInfo) e2;
return left.getName().compareToIgnoreCase(right.getName());
}
return super.compare(viewer, e1, e2);
}
@Override
public boolean isSorterProperty(final Object element, final String property) {
return true;
}
});
fSortColumn = 1;
}
/**
* Sorts by VM location.
*/
protected void sortByDirectory() {
fRuntimeList.setSorter(new ViewerSorter() {
@Override
public int compare(final Viewer viewer, final Object e1, final Object e2) {
if (e1 instanceof RuntimeInfo && e2 instanceof RuntimeInfo) {
final RuntimeInfo left = (RuntimeInfo) e1;
final RuntimeInfo right = (RuntimeInfo) e2;
return left.getOtpHome().compareToIgnoreCase(right.getOtpHome());
}
return super.compare(viewer, e1, e2);
}
@Override
public boolean isSorterProperty(final Object element, final String property) {
return true;
}
});
fSortColumn = 2;
}
protected void enableButtons() {
final int selectionCount = ((IStructuredSelection) fRuntimeList.getSelection())
.size();
fEditButton.setEnabled(selectionCount == 1);
fDuplicateButton.setEnabled(selectionCount == 1);
fRemoveButton.setEnabled(selectionCount > 0 && runtimes.size() > 1);
}
protected Button createPushButton(final Composite parent, final String label) {
return SWTUtil.createPushButton(parent, label, null);
}
/**
* Correctly resizes the table so no phantom columns appear
*/
protected void configureTableResizing(final Composite parent,
final Composite buttons, final Table table, final TableColumn column1,
final TableColumn column2, final TableColumn column3) {
parent.addControlListener(new ControlAdapter() {
@Override
public void controlResized(final ControlEvent e) {
resizeTable(parent, buttons, table, column1, column2, column3);
}
});
table.addListener(SWT.Paint, new Listener() {
@Override
public void handleEvent(final Event event) {
table.removeListener(SWT.Paint, this);
resizeTable(parent, buttons, table, column1, column2, column3);
}
});
column1.addControlListener(new ControlAdapter() {
@Override
public void controlResized(final ControlEvent e) {
if (column1.getWidth() > 0 && !fResizingTable) {
fWeight1 = getColumnWeight(0);
}
}
});
column2.addControlListener(new ControlAdapter() {
@Override
public void controlResized(final ControlEvent e) {
if (column2.getWidth() > 0 && !fResizingTable) {
fWeight2 = getColumnWeight(1);
}
}
});
}
protected void resizeTable(final Composite parent, final Composite buttons,
final Table table, final TableColumn column1, final TableColumn column2,
final TableColumn column3) {
fResizingTable = true;
int parentWidth = -1;
int parentHeight = -1;
if (parent.isVisible()) {
final Rectangle area = parent.getClientArea();
parentWidth = area.width;
parentHeight = area.height;
} else {
final Point parentSize = parent.computeSize(SWT.DEFAULT, SWT.DEFAULT);
parentWidth = parentSize.x;
parentHeight = parentSize.y;
}
final Point preferredSize = table.computeSize(SWT.DEFAULT, SWT.DEFAULT);
int width = parentWidth - 2 * table.getBorderWidth();
if (preferredSize.y > parentHeight) {
// Subtract the scrollbar width from the total column width
// if a vertical scrollbar will be required
final Point vBarSize = table.getVerticalBar().getSize();
width -= vBarSize.x;
}
width -= buttons.getSize().x;
final Point oldSize = table.getSize();
if (oldSize.x > width) {
// table is getting smaller so make the columns
// smaller first and then resize the table to
// match the client area width
column1.setWidth(Math.round(width * fWeight1));
column2.setWidth(Math.round(width * fWeight2));
column3.setWidth(width - (column1.getWidth() + column2.getWidth()));
table.setSize(width, parentHeight);
} else {
// table is getting bigger so make the table
// bigger first and then make the columns wider
// to match the client area width
table.setSize(width, parentHeight);
column1.setWidth(Math.round(width * fWeight1));
column2.setWidth(Math.round(width * fWeight2));
column3.setWidth(width - (column1.getWidth() + column2.getWidth()));
}
fResizingTable = false;
}
/**
* Returns the Runtimes currently being displayed in this block
*
* @return Runtimes currently being displayed in this block
*/
public List<RuntimeInfo> getRuntimes() {
return new ArrayList<RuntimeInfo>(runtimes);
}
/**
* Bring up a dialog that lets the user create a new runtime definition.
*/
protected void addRuntime() {
fRuntimeList.refresh();
final AddRuntimeDialog dialog = new AddRuntimeDialog(this, getShell(), null);
dialog.setTitle(RuntimePreferenceMessages.add_title);
if (dialog.open() != Window.OK) {
return;
}
fRuntimeList.refresh();
}
@Override
public void itemAdded(final RuntimeInfo vm) {
runtimes.add(vm);
fRuntimeList.refresh();
selectSingle();
}
private void selectSingle() {
if (runtimes.size() == 1) {
final RuntimeInfo vm = runtimes.iterator().next();
fRuntimeList.setChecked(vm, true);
}
if (runtimes.size() > 1) {
final RuntimeInfo vm = runtimes.iterator().next();
if (fRuntimeList.getCheckedElements().length == 0) {
fRuntimeList.setChecked(vm, true);
}
}
}
/**
* @see IAddRuntimeDialogRequestor#hasRuntimeWithName(String)
*/
@Override
public boolean isDuplicateName(final String name) {
return catalog.hasRuntimeWithName(name);
}
protected void editRuntime() {
final IStructuredSelection selection = (IStructuredSelection) fRuntimeList
.getSelection();
final RuntimeInfo vm = (RuntimeInfo) selection.getFirstElement();
if (vm == null) {
return;
}
final AddRuntimeDialog dialog = new AddRuntimeDialog(this, getShell(), vm);
dialog.setTitle(RuntimePreferenceMessages.edit_title);
if (dialog.open() != Window.OK) {
return;
}
removeRuntimes(new RuntimeInfo[] { vm });
catalog.removeRuntime(vm.getName());
fRuntimeList.refresh();
}
protected void duplicateRuntime() {
final IStructuredSelection selection = (IStructuredSelection) fRuntimeList
.getSelection();
final RuntimeInfo vm = (RuntimeInfo) selection.getFirstElement();
if (vm == null) {
return;
}
final RuntimeInfo vm1 = new RuntimeInfo.Builder(vm).withName(
vm.getName() + "_copy").build();
final AddRuntimeDialog dialog = new AddRuntimeDialog(this, getShell(), vm1);
dialog.setTitle(RuntimePreferenceMessages.edit_title);
if (dialog.open() != Window.OK) {
return;
}
fRuntimeList.refresh();
}
protected void removeSelectedRuntimes() {
final IStructuredSelection selection = (IStructuredSelection) fRuntimeList
.getSelection();
final RuntimeInfo[] vms = new RuntimeInfo[selection.size()];
final Iterator<?> iter = selection.iterator();
int i = 0;
while (iter.hasNext()) {
vms[i] = (RuntimeInfo) iter.next();
i++;
}
removeRuntimes(vms);
}
/**
* Removes the given VMs from the table.
*
* @param vms
*/
public void removeRuntimes(final RuntimeInfo[] vms) {
final IStructuredSelection prev = (IStructuredSelection) getSelection();
if (runtimes.size() == 1) {
setMessage("You can't delete the last runtime definition",
IMessageProvider.INFORMATION);
return;
}
for (final RuntimeInfo element : vms) {
runtimes.remove(element);
}
fRuntimeList.refresh();
final IStructuredSelection curr = (IStructuredSelection) getSelection();
if (!curr.equals(prev)) {
final List<RuntimeInfo> installs = getRuntimes();
if (curr.size() == 0 && installs.size() == 1) {
// pick a default VM automatically
setSelection(new StructuredSelection(installs.get(0)));
} else {
fireSelectionChanged();
}
}
selectSingle();
}
@Override
public Shell getShell() {
return getControl().getShell();
}
/**
* Sets the checked Backend, possible <code>null</code>
*
* @param vm
* Backend or <code>null</code>
*/
public void setCheckedRuntime(final RuntimeInfo vm) {
if (vm == null) {
setSelection(new StructuredSelection());
} else {
setSelection(new StructuredSelection(vm));
}
}
/**
* Returns the checked Backend or <code>null</code> if none.
*
* @return the checked Backend or <code>null</code> if none
*/
public RuntimeInfo getCheckedRuntime() {
final Object[] objects = fRuntimeList.getCheckedElements();
if (objects.length == 0) {
return null;
}
return (RuntimeInfo) objects[0];
}
/**
* Persist table settings into the give dialog store, prefixed with the
* given key.
*
* @param settings
* dialog store
* @param qualifier
* key qualifier
*/
public void saveColumnSettings(final IDialogSettings settings, final String qualifier) {
for (int i = 0; i < 2; i++) {
// persist the first 2 column weights
settings.put(qualifier + ".column" + i, getColumnWeight(i)); //$NON-NLS-1$
}
settings.put(qualifier + ".sortColumn", fSortColumn); //$NON-NLS-1$
}
protected float getColumnWeight(final int col) {
final Table table = fRuntimeList.getTable();
final int tableWidth = table.getSize().x;
final int columnWidth = table.getColumn(col).getWidth();
if (tableWidth > columnWidth) {
return (float) columnWidth / tableWidth;
}
return 1 / 3F;
}
/**
* Restore table settings from the given dialog store using the given key.
*
* @param settings
* dialog settings store
* @param qualifier
* key to restore settings from
*/
public void restoreColumnSettings(final IDialogSettings settings,
final String qualifier) {
fWeight1 = restoreColumnWeight(settings, qualifier, 0);
fWeight2 = restoreColumnWeight(settings, qualifier, 1);
fRuntimeList.getTable().layout(true);
try {
fSortColumn = settings.getInt(qualifier + ".sortColumn"); //$NON-NLS-1$
} catch (final NumberFormatException e) {
fSortColumn = 1;
}
switch (fSortColumn) {
case 1:
sortByName();
break;
case 2:
sortByDirectory();
break;
}
}
private float restoreColumnWeight(final IDialogSettings settings,
final String qualifier, final int col) {
try {
return settings.getFloat(qualifier + ".column" + col); //$NON-NLS-1$
} catch (final NumberFormatException e) {
return 1 / 3F;
}
}
@Override
protected Control createContents(final Composite parent) {
initializeDialogUnits(parent);
final GridLayout layout = new GridLayout();
layout.numColumns = 1;
layout.marginHeight = 0;
layout.marginWidth = 0;
parent.setLayout(layout);
final Control ctrl = createMyControl(parent);
final GridData data = new GridData(GridData.FILL_BOTH);
data.horizontalSpan = 1;
ctrl.setLayoutData(data);
addSelectionChangedListener(new ISelectionChangedListener() {
@Override
public void selectionChanged(final SelectionChangedEvent event) {
checkValid();
}
});
checkValid();
applyDialogFont(parent);
return parent;
}
@Override
public void init(final IWorkbench workbench) {
}
private Control createMyControl(final Composite ancestor) {
final Composite parent = new Composite(ancestor, SWT.NULL);
GridLayout layout = new GridLayout();
layout.numColumns = 2;
layout.marginHeight = 0;
layout.marginWidth = 0;
parent.setLayout(layout);
final Font font = ancestor.getFont();
parent.setFont(font);
GridData data;
final Composite composite = new Composite(parent, SWT.NONE);
composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false));
final GridLayout gridLayout = new GridLayout();
gridLayout.numColumns = 2;
composite.setLayout(gridLayout);
final Label erlideLabel = new Label(composite, SWT.NONE);
erlideLabel
.setToolTipText("The erlide runtime is used for IDE purposes, not for running project code. "
+ "It is the most recent stable version that is installed.");
final String erlideName = erlideRuntime == null ? "none" : erlideRuntime
.getName();
erlideLabel
.setText(RuntimePreferenceMessages.RuntimePreferencePage_erlideLabel_text
+ erlideName);
new Label(composite, SWT.NONE);
new Label(parent, SWT.NONE);
final Label tableLabel = new Label(parent, SWT.NONE);
tableLabel.setText("Installed runtimes:");
data = new GridData();
data.horizontalSpan = 2;
tableLabel.setLayoutData(data);
tableLabel.setFont(font);
final Table table = new Table(parent, SWT.CHECK | SWT.BORDER | SWT.MULTI
| SWT.FULL_SELECTION);
table.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(final SelectionEvent e) {
if (e.detail == SWT.CHECK) {
final RuntimeInfo ri = (RuntimeInfo) e.item.getData();
defaultRuntime = ri;
}
}
});
data = new GridData(SWT.FILL, SWT.FILL, true, true);
data.widthHint = 403;
table.setLayoutData(data);
table.setFont(font);
table.setHeaderVisible(true);
table.setLinesVisible(true);
final TableLayout tableLayout = new TableLayout();
table.setLayout(tableLayout);
final TableColumn column1 = new TableColumn(table, SWT.NULL);
column1.setWidth(80);
column1.setText(RuntimePreferenceMessages.name);
column1.setResizable(true);
column1.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(final SelectionEvent e) {
sortByName();
}
});
final TableColumn column2 = new TableColumn(table, SWT.NULL);
column2.setWidth(150);
column2.setText("Directory");
column2.setResizable(true);
column2.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(final SelectionEvent e) {
sortByDirectory();
}
});
final TableColumn column3 = new TableColumn(table, SWT.NULL);
column3.setWidth(80);
column3.setText("Version");
column3.setResizable(false);
fRuntimeList = new CheckboxTableViewer(table);
fRuntimeList.setLabelProvider(new RuntimeLabelProvider());
fRuntimeList.setContentProvider(new RuntimeContentProvider());
fRuntimeList.setInput(runtimes);
if (defaultRuntime == null || defaultRuntime == RuntimeInfo.NO_RUNTIME_INFO) {
defaultRuntime = RuntimeCore.getRuntimeInfoCatalog().getDefaultRuntime();
}
if (defaultRuntime != null) {
fRuntimeList.setCheckedElements(new Object[] { defaultRuntime });
}
// by default, sort by name
sortByName();
fRuntimeList.addSelectionChangedListener(new ISelectionChangedListener() {
@Override
public void selectionChanged(final SelectionChangedEvent evt) {
enableButtons();
}
});
fRuntimeList.addCheckStateListener(new ICheckStateListener() {
@Override
public void checkStateChanged(final CheckStateChangedEvent event) {
if (event.getChecked()) {
setCheckedRuntime((RuntimeInfo) event.getElement());
} else {
setCheckedRuntime(null);
}
}
});
fRuntimeList.addDoubleClickListener(new IDoubleClickListener() {
@Override
public void doubleClick(final DoubleClickEvent e) {
if (!fRuntimeList.getSelection().isEmpty()) {
editRuntime();
}
}
});
table.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(final KeyEvent event) {
if (event.character == SWT.DEL && event.stateMask == 0) {
removeSelectedRuntimes();
}
}
});
final Composite buttons = new Composite(parent, SWT.NULL);
buttons.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));
layout = new GridLayout();
layout.marginHeight = 0;
layout.marginWidth = 0;
buttons.setLayout(layout);
buttons.setFont(font);
fAddButton = createPushButton(buttons, RuntimePreferenceMessages.add);
fAddButton.addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(final Event evt) {
addRuntime();
}
});
fEditButton = createPushButton(buttons, RuntimePreferenceMessages.edit);
fEditButton.addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(final Event evt) {
editRuntime();
}
});
fDuplicateButton = createPushButton(buttons, RuntimePreferenceMessages.duplicate);
fDuplicateButton.addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(final Event evt) {
duplicateRuntime();
}
});
fRemoveButton = createPushButton(buttons, RuntimePreferenceMessages.remove);
fRemoveButton.addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(final Event evt) {
removeSelectedRuntimes();
}
});
configureTableResizing(parent, buttons, table, column1, column2, column3);
enableButtons();
return parent;
}
@Override
public boolean performOk() {
if (defaultRuntime == null || defaultRuntime == RuntimeInfo.NO_RUNTIME_INFO) {
defaultRuntime = (RuntimeInfo) fRuntimeList.getElementAt(0);
}
if (erlideRuntime == null) {
erlideRuntime = defaultRuntime;
}
boolean restart = false;
final RuntimeInfo oldDefault = catalog.getDefaultRuntime();
if (oldDefault != RuntimeInfo.NO_RUNTIME_INFO
&& !defaultRuntime.equals(oldDefault)) {
restart = RestartDialog.openQuestion(getShell());
}
catalog.setRuntimes(runtimes, defaultRuntime.getName(), erlideRuntime.getName());
final RuntimeInfoPreferencesSerializer serializer = new RuntimeInfoPreferencesSerializer();
serializer.store(new RuntimeInfoCatalogData(runtimes, defaultRuntime.getName(),
erlideRuntime.getName()));
// save column widths
final IDialogSettings settings = ErlideUIPlugin.getDefault().getDialogSettings();
saveColumnSettings(settings, RUNTIMES_PREFERENCE_PAGE);
if (restart) {
new UIJob("restart") {
@Override
public IStatus runInUIThread(final IProgressMonitor monitor) {
PlatformUI.getWorkbench().restart();
return Status.OK_STATUS;
}
}.schedule(100);
}
return super.performOk();
}
@Override
public void performDefaults() {
runtimes = new ArrayList<RuntimeInfo>(catalog.getRuntimes());
defaultRuntime = catalog.getDefaultRuntime();
erlideRuntime = catalog.getErlideRuntime();
}
void checkValid() {
final RuntimeInfo def = getCheckedRuntime();
if (def == null && getRuntimes().size() > 0) {
setValid(false);
setErrorMessage("Please select a default runtime.");
} else {
setValid(true);
setErrorMessage(null);
}
}
/**
* Content provider to show a list of Runtimes
*/
class RuntimeContentProvider implements IStructuredContentProvider {
@Override
public Object[] getElements(final Object input) {
return runtimes.toArray(new RuntimeInfo[runtimes.size()]);
}
@Override
public void inputChanged(final Viewer viewer, final Object oldInput,
final Object newInput) {
}
@Override
public void dispose() {
}
}
/**
* Label provider for installed runtimes table.
*/
static class RuntimeLabelProvider extends LabelProvider implements
ITableLabelProvider {
/**
* @see ITableLabelProvider#getColumnText(Object, int)
*/
@Override
public String getColumnText(final Object element, final int columnIndex) {
if (element instanceof RuntimeInfo) {
final RuntimeInfo vm = (RuntimeInfo) element;
switch (columnIndex) {
case 0:
return vm.getName();
case 1:
return vm.getOtpHome();
case 2:
return vm.getVersion().toString();
}
}
return element.toString();
}
/**
* @see ITableLabelProvider#getColumnImage(Object, int)
*/
@Override
public Image getColumnImage(final Object element, final int columnIndex) {
return null;
}
@Override
public String getText(final Object element) {
return getColumnText(element, 0);
}
}
}