/* ********************************************************************** **
** Copyright notice **
** **
** (c) 2005-2009 RSSOwl Development Team **
** http://www.rssowl.org/ **
** **
** 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.rssowl.org/legal/epl-v10.html **
** **
** A copy is found in the file epl-v10.html and important notices to the **
** license from the team is found in the textfile LICENSE.txt distributed **
** in this package. **
** **
** This copyright notice MUST APPEAR in all copies of the file! **
** **
** Contributors: **
** RSSOwl Development Team - initial API and implementation **
** **
** ********************************************************************** */
package org.rssowl.ui.internal.dialogs.preferences;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.resource.LocalResourceManager;
import org.eclipse.jface.viewers.CellLabelProvider;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.RGB;
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.Label;
import org.eclipse.swt.widgets.Link;
import org.eclipse.swt.widgets.TreeItem;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.rssowl.core.Owl;
import org.rssowl.core.persist.ILabel;
import org.rssowl.core.persist.dao.DynamicDAO;
import org.rssowl.core.persist.dao.ILabelDAO;
import org.rssowl.core.util.CoreUtils;
import org.rssowl.ui.internal.ApplicationWorkbenchWindowAdvisor;
import org.rssowl.ui.internal.Controller;
import org.rssowl.ui.internal.OwlUI;
import org.rssowl.ui.internal.dialogs.ConfirmDialog;
import org.rssowl.ui.internal.dialogs.LabelDialog;
import org.rssowl.ui.internal.dialogs.NewsFiltersListDialog;
import org.rssowl.ui.internal.dialogs.LabelDialog.DialogMode;
import org.rssowl.ui.internal.util.LayoutUtils;
import org.rssowl.ui.internal.util.ModelUtils;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
* @author bpasero
*/
public class ManageLabelsPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
/** ID of the Page */
public static final String ID = "org.rssowl.ui.ManageLabels"; //$NON-NLS-1$
private LocalResourceManager fResources;
private TreeViewer fViewer;
private Button fMoveDownButton;
private Button fMoveUpButton;
/** Leave for reflection */
public ManageLabelsPreferencePage() {
fResources = new LocalResourceManager(JFaceResources.getResources());
setImageDescriptor(OwlUI.getImageDescriptor("icons/elcl16/labels.gif")); //$NON-NLS-1$
}
/*
* @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
*/
public void init(IWorkbench workbench) {
noDefaultAndApplyButton();
}
/*
* @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
*/
@Override
protected Control createContents(Composite parent) {
Composite container = createContainer(parent);
/* Label */
Label infoLabel = new Label(container, SWT.None);
infoLabel.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false, 2, 1));
infoLabel.setText(Messages.ManageLabelsPreferencePage_LABEL_INFO);
/* Label Viewer */
createViewer(container);
/* Button Box */
createButtons(container);
/* Info Container */
Composite infoContainer = new Composite(container, SWT.None);
infoContainer.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
infoContainer.setLayout(LayoutUtils.createGridLayout(2, 0, 0));
Label infoImg = new Label(infoContainer, SWT.NONE);
infoImg.setImage(OwlUI.getImage(fResources, "icons/obj16/info.gif")); //$NON-NLS-1$
infoImg.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
Link infoText = new Link(infoContainer, SWT.WRAP);
infoText.setText(Messages.ManageLabelsPreferencePage_LABEL_TIP);
infoText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
infoText.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
NewsFiltersListDialog dialog = NewsFiltersListDialog.getVisibleInstance();
if (dialog == null) {
dialog = new NewsFiltersListDialog(getShell());
dialog.setBlockOnOpen(false);
dialog.open();
} else {
dialog.getShell().forceActive();
if (dialog.getShell().getMinimized())
dialog.getShell().setMinimized(false);
}
}
});
applyDialogFont(container);
return container;
}
private void createButtons(Composite container) {
Composite buttonBox = new Composite(container, SWT.None);
buttonBox.setLayout(LayoutUtils.createGridLayout(1, 0, 0));
buttonBox.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, true));
Button addButton = new Button(buttonBox, SWT.PUSH);
addButton.setText(Messages.ManageLabelsPreferencePage_NEW);
Dialog.applyDialogFont(addButton);
setButtonLayoutData(addButton);
addButton.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
onAdd();
}
});
final Button editButton = new Button(buttonBox, SWT.PUSH);
editButton.setText(Messages.ManageLabelsPreferencePage_EDIT);
editButton.setEnabled(!fViewer.getSelection().isEmpty());
Dialog.applyDialogFont(editButton);
setButtonLayoutData(editButton);
editButton.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
onEdit();
}
});
final Button deleteButton = new Button(buttonBox, SWT.PUSH);
deleteButton.setText(Messages.ManageLabelsPreferencePage_DELETE);
deleteButton.setEnabled(!fViewer.getSelection().isEmpty());
Dialog.applyDialogFont(deleteButton);
setButtonLayoutData(deleteButton);
deleteButton.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
onDelete();
}
});
/* Move Label Up */
fMoveUpButton = new Button(buttonBox, SWT.PUSH);
fMoveUpButton.setText(Messages.ManageLabelsPreferencePage_MOVE_UP);
fMoveUpButton.setEnabled(false);
Dialog.applyDialogFont(fMoveUpButton);
setButtonLayoutData(fMoveUpButton);
((GridData) fMoveUpButton.getLayoutData()).verticalIndent = 10;
fMoveUpButton.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
onMove(true);
}
});
/* Move Label Down */
fMoveDownButton = new Button(buttonBox, SWT.PUSH);
fMoveDownButton.setText(Messages.ManageLabelsPreferencePage_MOVE_DOWN);
fMoveDownButton.setEnabled(false);
Dialog.applyDialogFont(fMoveDownButton);
setButtonLayoutData(fMoveDownButton);
fMoveDownButton.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
onMove(false);
}
});
fViewer.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent event) {
editButton.setEnabled(!event.getSelection().isEmpty());
deleteButton.setEnabled(!event.getSelection().isEmpty());
updateMoveEnablement();
}
});
}
private void onMove(boolean up) {
TreeItem[] items = fViewer.getTree().getItems();
List<ILabel> sortedLabels = new ArrayList<ILabel>(items.length);
for (TreeItem item : items) {
sortedLabels.add((ILabel) item.getData());
}
IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection();
ILabel selectedLabel = (ILabel) selection.getFirstElement();
int selectedLabelOrder = selectedLabel.getOrder();
ILabel otherLabel = null;
int index = sortedLabels.indexOf(selectedLabel);
/* Move Up */
if (up && index > 0) {
otherLabel = sortedLabels.get(index - 1);
selectedLabel.setOrder(otherLabel.getOrder());
otherLabel.setOrder(selectedLabelOrder);
}
/* Move Down */
else if (!up && index < sortedLabels.size() - 1) {
otherLabel = sortedLabels.get(index + 1);
selectedLabel.setOrder(otherLabel.getOrder());
otherLabel.setOrder(selectedLabelOrder);
}
DynamicDAO.getDAO(ILabelDAO.class).saveAll(Arrays.asList(new ILabel[] { selectedLabel, otherLabel }));
fViewer.refresh();
fViewer.getTree().showSelection();
updateMoveEnablement();
}
private void updateMoveEnablement() {
boolean enableMoveUp = true;
boolean enableMoveDown = true;
TreeItem[] selection = fViewer.getTree().getSelection();
int[] selectionIndices = new int[selection.length];
for (int i = 0; i < selection.length; i++)
selectionIndices[i] = fViewer.getTree().indexOf(selection[i]);
if (selectionIndices.length == 1) {
enableMoveUp = selectionIndices[0] != 0;
enableMoveDown = selectionIndices[0] != fViewer.getTree().getItemCount() - 1;
} else {
enableMoveUp = false;
enableMoveDown = false;
}
fMoveUpButton.setEnabled(enableMoveUp);
fMoveDownButton.setEnabled(enableMoveDown);
}
private void onAdd() {
LabelDialog dialog = new LabelDialog(getShell(), DialogMode.ADD, null);
if (dialog.open() == IDialogConstants.OK_ID) {
String name = dialog.getName();
RGB color = dialog.getColor();
ILabel newLabel = Owl.getModelFactory().createLabel(null, name);
newLabel.setColor(OwlUI.toString(color));
newLabel.setOrder(fViewer.getTree().getItemCount());
DynamicDAO.save(newLabel);
fViewer.refresh();
fViewer.setSelection(new StructuredSelection(newLabel));
}
fViewer.getTree().setFocus();
}
private void onEdit() {
IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection();
if (!selection.isEmpty()) {
ILabel label = (ILabel) selection.getFirstElement();
LabelDialog dialog = new LabelDialog(getShell(), DialogMode.EDIT, label);
if (dialog.open() == IDialogConstants.OK_ID) {
boolean changed = false;
String name = dialog.getName();
RGB color = dialog.getColor();
if (!label.getName().equals(name)) {
label.setName(name);
changed = true;
}
String colorStr = OwlUI.toString(color);
if (!label.getColor().equals(colorStr)) {
label.setColor(colorStr);
changed = true;
}
/* Save Label */
if (changed) {
Controller.getDefault().getSavedSearchService().forceQuickUpdate();
DynamicDAO.save(label);
fViewer.update(label, null);
}
}
}
fViewer.getTree().setFocus();
}
private void onDelete() {
IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection();
if (!selection.isEmpty()) {
List<ILabel> selectedLabels = ModelUtils.getEntities(selection, ILabel.class);
String msg;
if (selectedLabels.size() == 1)
msg = NLS.bind(Messages.ManageLabelsPreferencePage_DELETE_LABEL_N, selectedLabels.get(0).getName());
else
msg = NLS.bind(Messages.ManageLabelsPreferencePage_DELETE_N_LABELS, selectedLabels.size());
ConfirmDialog dialog = new ConfirmDialog(getShell(), Messages.ManageLabelsPreferencePage_CONFIRM_DELETE, Messages.ManageLabelsPreferencePage_NO_UNDO, msg, null);
if (dialog.open() == IDialogConstants.OK_ID) {
/* Can have an impact on news, thereby force quick update */
Controller.getDefault().getSavedSearchService().forceQuickUpdate();
/* Delete Label from DB */
DynamicDAO.deleteAll(selectedLabels);
fViewer.refresh();
fixOrderAfterDelete();
}
}
fViewer.getTree().setFocus();
}
/* Ensure that after Delete, the orders are in sync again */
private void fixOrderAfterDelete() {
List<ILabel> labelsToSave = new ArrayList<ILabel>();
TreeItem[] items = fViewer.getTree().getItems();
for (int i = 0; i < items.length; i++) {
TreeItem item = items[i];
ILabel label = (ILabel) item.getData();
label.setOrder(i);
labelsToSave.add(label);
}
DynamicDAO.saveAll(labelsToSave);
}
private void createViewer(Composite container) {
fViewer = new TreeViewer(container, SWT.FULL_SELECTION | SWT.BORDER | SWT.MULTI);
fViewer.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
((GridData) fViewer.getTree().getLayoutData()).heightHint = 190;
fViewer.getTree().setFont(OwlUI.getBold(JFaceResources.DIALOG_FONT));
fViewer.getTree().setData(ApplicationWorkbenchWindowAdvisor.FOCUSLESS_SCROLL_HOOK, new Object());
/* Content Provider */
fViewer.setContentProvider(new ITreeContentProvider() {
public Object[] getElements(Object inputElement) {
return CoreUtils.loadSortedLabels().toArray();
}
public Object[] getChildren(Object parentElement) {
return null;
}
public Object getParent(Object element) {
return null;
}
public boolean hasChildren(Object element) {
return false;
}
public void dispose() {}
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {}
});
/* Label Provider */
final RGB listBackground = fViewer.getControl().getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND).getRGB();
final RGB listSelectionBackground = fViewer.getControl().getDisplay().getSystemColor(SWT.COLOR_LIST_SELECTION).getRGB();
fViewer.setLabelProvider(new CellLabelProvider() {
@Override
public void update(ViewerCell cell) {
ILabel label = (ILabel) cell.getElement();
/* Text */
cell.setText(label.getName());
/* Color */
if (!OwlUI.isHighContrast()) {
RGB labelRGB = OwlUI.getRGB(label);
if (!listBackground.equals(labelRGB) && !listSelectionBackground.equals(labelRGB))
cell.setForeground(OwlUI.getColor(fResources, labelRGB));
else
cell.setForeground(null);
}
}
});
/* Set dummy Input */
fViewer.setInput(new Object());
/* Edit on Doubleclick */
fViewer.addDoubleClickListener(new IDoubleClickListener() {
public void doubleClick(DoubleClickEvent event) {
onEdit();
}
});
}
private Composite createContainer(Composite parent) {
Composite composite = new Composite(parent, SWT.NULL);
GridLayout layout = new GridLayout(2, false);
layout.marginWidth = 0;
layout.marginHeight = 0;
composite.setLayout(layout);
composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL));
composite.setFont(parent.getFont());
return composite;
}
/*
* @see org.eclipse.jface.dialogs.DialogPage#dispose()
*/
@Override
public void dispose() {
super.dispose();
fResources.dispose();
}
}