/* ********************************************************************** **
** Copyright notice **
** **
** (c) 2005-2006 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;
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.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
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.ColorDialog;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
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.INews;
import org.rssowl.core.persist.dao.DynamicDAO;
import org.rssowl.core.persist.dao.INewsDAO;
import org.rssowl.ui.internal.dialogs.ConfirmDeleteDialog;
import org.rssowl.ui.internal.util.LayoutUtils;
import java.util.Collection;
/**
* @author bpasero
*/
public class ManageLabelsPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
/** ID of the Page */
public static final String ID = "org.rssowl.ui.ManageLabels";
private LocalResourceManager fResources;
private TreeViewer fViewer;
/* Supported Modes of the Label Dialog */
private enum DialogMode {
/** Add Label */
ADD,
/** Edit Label */
EDIT,
};
/* A dialog to add or edit Labels */
class LabelDialog extends Dialog {
private final DialogMode fMode;
private final ILabel fExistingLabel;
private Text fNameInput;
private ToolItem fColorItem;
private Image fColorImage;
private RGB fSelectedColor;
private String fName;
LabelDialog(Shell parentShell, DialogMode mode, ILabel label) {
super(parentShell);
fMode = mode;
fExistingLabel = label;
if (fExistingLabel != null)
fSelectedColor = OwlUI.getRGB(fExistingLabel);
else
fSelectedColor = new RGB(0, 0, 0);
}
String getName() {
return fName;
}
RGB getColor() {
return fSelectedColor;
}
/*
* @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
*/
@Override
protected Control createDialogArea(Composite parent) {
Composite composite = new Composite(parent, SWT.NONE);
composite.setLayout(LayoutUtils.createGridLayout(2, 10, 10));
composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
/* Label */
Label label = new Label(composite, SWT.None);
label.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false, 2, 1));
switch (fMode) {
case ADD:
label.setText("Please enter the name and color for the new Label:");
break;
case EDIT:
label.setText("Please update the name and color for this Label:");
break;
}
/* Name */
if (fMode == DialogMode.ADD || fMode == DialogMode.EDIT) {
Label nameLabel = new Label(composite, SWT.NONE);
nameLabel.setText("Name: ");
fNameInput = new Text(composite, SWT.BORDER | SWT.SINGLE);
fNameInput.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false));
if (fExistingLabel != null) {
fNameInput.setText(fExistingLabel.getName());
fNameInput.selectAll();
fNameInput.setFocus();
}
}
/* Color */
if (fMode == DialogMode.ADD || fMode == DialogMode.EDIT) {
Label nameLabel = new Label(composite, SWT.NONE);
nameLabel.setText("Color: ");
Composite colorContainer = new Composite(composite, SWT.BORDER);
colorContainer.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false));
colorContainer.setBackground(getShell().getDisplay().getSystemColor(SWT.COLOR_WHITE));
colorContainer.setLayout(LayoutUtils.createGridLayout(1, 0, 0));
ToolBar colorBar = new ToolBar(colorContainer, SWT.FLAT);
colorBar.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false));
colorBar.setBackground(getShell().getDisplay().getSystemColor(SWT.COLOR_WHITE));
fColorItem = new ToolItem(colorBar, SWT.PUSH);
fColorItem.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
onSelectColor();
}
});
updateColorItem();
}
return composite;
}
/*
* @see org.eclipse.jface.dialogs.Dialog#createButtonBar(org.eclipse.swt.widgets.Composite)
*/
@Override
protected Control createButtonBar(Composite parent) {
/* Spacer */
new Label(parent, SWT.None).setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false, 2, 1));
Control control = super.createButtonBar(parent);
/* Update OK Button based on Input */
fNameInput.addModifyListener(new ModifyListener() {
public void modifyText(ModifyEvent e) {
getButton(IDialogConstants.OK_ID).setEnabled(fNameInput.getText().length() > 0);
}
});
/* Udate now */
getButton(IDialogConstants.OK_ID).setEnabled(fNameInput.getText().length() > 0);
return control;
}
private void updateColorItem() {
Color color = OwlUI.getColor(fResources, fSelectedColor);
/* Dispose old first */
if (fColorImage != null)
fColorImage.dispose();
fColorImage = new Image(getShell().getDisplay(), 32, 10);
GC gc = new GC(fColorImage);
gc.setBackground(color);
gc.fillRectangle(0, 0, 32, 10);
gc.setForeground(getShell().getDisplay().getSystemColor(SWT.COLOR_BLACK));
gc.drawRectangle(0, 0, 31, 9);
gc.dispose();
fColorItem.setImage(fColorImage);
}
private void onSelectColor() {
ColorDialog dialog = new ColorDialog(getShell());
dialog.setRGB(fSelectedColor);
RGB color = dialog.open();
if (color != null) {
fSelectedColor = color;
updateColorItem();
}
}
/*
* @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)
*/
@Override
protected void configureShell(Shell newShell) {
super.configureShell(newShell);
switch (fMode) {
case ADD:
newShell.setText("Add Label");
break;
case EDIT:
newShell.setText("Edit Label");
break;
}
}
/*
* @see org.eclipse.jface.dialogs.Dialog#okPressed()
*/
@Override
protected void okPressed() {
if (fNameInput != null)
fName = fNameInput.getText();
super.okPressed();
}
/*
* @see org.eclipse.jface.dialogs.Dialog#close()
*/
@Override
public boolean close() {
boolean res = super.close();
if (res && fColorImage != null)
fColorImage.dispose();
return res;
}
}
/** Leave for reflection */
public ManageLabelsPreferencePage() {
fResources = new LocalResourceManager(JFaceResources.getResources());
}
/*
* @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("Labels can be used to categorize and prioritize your news.");
/* Label Viewer */
createViewer(container);
/* Button Box */
createButtons(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("&Add...");
setButtonLayoutData(addButton);
addButton.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
onAdd();
}
});
final Button editButton = new Button(buttonBox, SWT.PUSH);
editButton.setText("&Edit...");
editButton.setEnabled(!fViewer.getSelection().isEmpty());
setButtonLayoutData(editButton);
editButton.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
onEdit();
}
});
final Button deleteButton = new Button(buttonBox, SWT.PUSH);
deleteButton.setText("&Delete");
deleteButton.setEnabled(!fViewer.getSelection().isEmpty());
setButtonLayoutData(deleteButton);
deleteButton.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
onDelete();
}
});
fViewer.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent event) {
editButton.setEnabled(!event.getSelection().isEmpty());
deleteButton.setEnabled(!event.getSelection().isEmpty());
}
});
}
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(color.red + "," + color.green + "," + color.blue);
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 = color.red + "," + color.green + "," + color.blue;
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()) {
ILabel label = (ILabel) selection.getFirstElement();
String msg = "Are you sure you want to delete the Label '" + label.getName() + "'?";
ConfirmDeleteDialog dialog = new ConfirmDeleteDialog(getShell(), "Confirm Delete", "This action can not be undone", msg, null);
if (dialog.open() == IDialogConstants.OK_ID) {
/* Remove Label from any News containing it */
Collection<INews> affectedNews = DynamicDAO.getDAO(INewsDAO.class).loadAll(label);
for (INews news : affectedNews) {
news.removeLabel(label);
}
Controller.getDefault().getSavedSearchService().forceQuickUpdate();
DynamicDAO.saveAll(affectedNews);
/* Delete Label from DB */
DynamicDAO.delete(label);
fViewer.refresh();
}
}
fViewer.getTree().setFocus();
}
private void createViewer(Composite container) {
fViewer = new TreeViewer(container, SWT.FULL_SELECTION | SWT.BORDER | SWT.SINGLE);
fViewer.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
/* Content Provider */
fViewer.setContentProvider(new ITreeContentProvider() {
public Object[] getElements(Object inputElement) {
return DynamicDAO.loadAll(ILabel.class).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 */
fViewer.setLabelProvider(new CellLabelProvider() {
@Override
public void update(ViewerCell cell) {
ILabel label = (ILabel) cell.getElement();
/* Text */
cell.setText(label.getName());
/* Color */
cell.setForeground(OwlUI.getColor(fResources, label));
}
});
/* 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();
}
}