/*******************************************************************************
* Copyright (c) 2000, 2017 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:
* Jesper Kamstrup Linnet (eclipse@kamstrup-linnet.dk) - initial API and implementation
* (report 36180: Callers/Callees view)
*******************************************************************************/
package org.eclipse.dltk.ui.viewsupport;
import java.util.HashMap;
import java.util.List;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.dltk.internal.corext.util.Messages;
import org.eclipse.dltk.internal.ui.DLTKUIMessages;
import org.eclipse.dltk.internal.ui.wizards.dialogfields.DialogField;
import org.eclipse.dltk.internal.ui.wizards.dialogfields.IListAdapter;
import org.eclipse.dltk.internal.ui.wizards.dialogfields.LayoutUtil;
import org.eclipse.dltk.internal.ui.wizards.dialogfields.ListDialogField;
import org.eclipse.dltk.internal.ui.wizards.dialogfields.Separator;
import org.eclipse.dltk.internal.ui.wizards.dialogfields.StringDialogField;
import org.eclipse.dltk.ui.dialogs.StatusInfo;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.StatusDialog;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
/*package*/class HistoryListAction<E> extends Action {
private class HistoryListDialog extends StatusDialog {
private static final int MAX_MAX_ENTRIES = 100;
private ListDialogField fHistoryList;
private StringDialogField fMaxEntriesField;
private int fMaxEntries;
private E fResult;
private HistoryListDialog() {
super(fHistory.getShell());
setTitle(fHistory.getHistoryListDialogTitle());
createHistoryList();
createMaxEntriesField();
setHelpAvailable(false);
}
private void createHistoryList() {
IListAdapter adapter = new IListAdapter() {
@Override
public void customButtonPressed(ListDialogField field,
int index) {
doCustomButtonPressed(index);
}
@Override
public void selectionChanged(ListDialogField field) {
doSelectionChanged();
}
@Override
public void doubleClicked(ListDialogField field) {
doDoubleClicked();
}
};
String[] buttonLabels = new String[] {
DLTKUIMessages.HistoryListAction_remove,
DLTKUIMessages.HistoryListAction_remove_all };
LabelProvider labelProvider = new TestRunLabelProvider();
fHistoryList = new ListDialogField(adapter, buttonLabels,
labelProvider);
fHistoryList.setLabelText(fHistory.getHistoryListDialogMessage());
List<E> historyEntries = fHistory.getHistoryEntries();
fHistoryList.setElements(historyEntries);
E currentEntry = fHistory.getCurrentEntry();
ISelection sel;
if (currentEntry != null) {
sel = new StructuredSelection(currentEntry);
} else {
sel = new StructuredSelection();
}
fHistoryList.selectElements(sel);
}
private void createMaxEntriesField() {
fMaxEntriesField = new StringDialogField();
fMaxEntriesField.setLabelText(fHistory.getMaxEntriesMessage());
fMaxEntriesField.setDialogFieldListener(field -> {
String maxString = fMaxEntriesField.getText();
boolean valid;
try {
fMaxEntries = Integer.parseInt(maxString);
valid = fMaxEntries > 0 && fMaxEntries < MAX_MAX_ENTRIES;
} catch (NumberFormatException e) {
valid = false;
}
if (valid)
updateStatus(StatusInfo.OK_STATUS);
else
updateStatus(new StatusInfo(IStatus.ERROR, Messages.format(
DLTKUIMessages.HistoryListAction_max_entries_constraint,
Integer.toString(MAX_MAX_ENTRIES))));
});
fMaxEntriesField
.setText(Integer.toString(fHistory.getMaxEntries()));
}
@Override
protected Control createDialogArea(Composite parent) {
initializeDialogUnits(parent);
Composite composite = (Composite) super.createDialogArea(parent);
Composite inner = new Composite(composite, SWT.NONE);
inner.setLayoutData(new GridData(GridData.FILL_BOTH));
inner.setFont(composite.getFont());
LayoutUtil.doDefaultLayout(inner,
new DialogField[] { fHistoryList, new Separator() }, true);
LayoutUtil.setHeightHint(fHistoryList.getListControl(null),
convertHeightInCharsToPixels(12));
LayoutUtil.setHorizontalGrabbing(fHistoryList.getListControl(null));
Composite additionalControls = new Composite(inner, SWT.NONE);
additionalControls.setLayoutData(
new GridData(SWT.FILL, SWT.FILL, true, false));
LayoutUtil.doDefaultLayout(additionalControls,
new DialogField[] { fMaxEntriesField }, false);
LayoutUtil.setHorizontalGrabbing(
fMaxEntriesField.getTextControl(null));
applyDialogFont(composite);
return composite;
}
private void doCustomButtonPressed(int index) {
switch (index) {
case 0: // remove
fHistoryList.removeElements(fHistoryList.getSelectedElements());
fHistoryList.selectFirstElement();
break;
case 1: // remove all
fHistoryList.removeAllElements();
default:
break;
}
}
private void doDoubleClicked() {
okPressed();
}
private void doSelectionChanged() {
List<E> selected = fHistoryList.getSelectedElements();
if (selected.size() >= 1) {
fResult = selected.get(0);
} else {
fResult = null;
}
fHistoryList.enableButton(0, selected.size() != 0);
}
public E getResult() {
return fResult;
}
public List<E> getRemaining() {
return fHistoryList.getElements();
}
public int getMaxEntries() {
return fMaxEntries;
}
@Override
public void create() {
setShellStyle(getShellStyle() | SWT.RESIZE);
super.create();
}
}
private final class TestRunLabelProvider extends LabelProvider {
private final HashMap<ImageDescriptor, Image> fImages = new HashMap<>();
@Override
public String getText(Object element) {
return fHistory.getText((E) element);
}
@Override
public Image getImage(Object element) {
ImageDescriptor imageDescriptor = fHistory
.getImageDescriptor((E) element);
return getCachedImage(imageDescriptor);
}
private Image getCachedImage(ImageDescriptor imageDescriptor) {
Image cached = fImages.get(imageDescriptor);
if (cached != null)
return cached;
Image image = imageDescriptor
.createImage(fHistory.getShell().getDisplay());
fImages.put(imageDescriptor, image);
return image;
}
@Override
public void dispose() {
for (Image image : fImages.values()) {
image.dispose();
}
fImages.clear();
}
}
private ViewHistory<E> fHistory;
public HistoryListAction(ViewHistory history) {
super(null, IAction.AS_RADIO_BUTTON);
fHistory = history;
fHistory.configureHistoryListAction(this);
}
@Override
public void run() {
HistoryListDialog dialog = new HistoryListDialog();
if (dialog.open() == Window.OK) {
fHistory.setHistoryEntries(dialog.getRemaining(),
dialog.getResult());
fHistory.setMaxEntries(dialog.getMaxEntries());
}
}
}