/*******************************************************************************
* Copyright (c) 2007, 2015 Innoopract Informationssysteme GmbH 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:
* Innoopract Informationssysteme GmbH - initial API and implementation
* EclipseSource - ongoing development
******************************************************************************/
package org.eclipse.rap.demo.controls;
import java.util.ArrayList;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.ListViewer;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.rap.rwt.RWT;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MenuAdapter;
import org.eclipse.swt.events.MenuEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
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.Event;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Link;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class ListTab extends ExampleTab {
private static final java.util.List<String> ELEMENTS;
static {
ELEMENTS = new ArrayList<String>();
String text = "A very long item that demonstrates horizontal scrolling in a List";
ELEMENTS.add( text );
text = "An item with a linebreak\n(converted to a whitespace)";
ELEMENTS.add( text );
text = "...and other control chars: \u0003 \t \u0004 \u000F";
ELEMENTS.add( text );
for( int i = 1; i <= 25; i++ ) {
ELEMENTS.add( "Item " + i );
}
}
private List list;
private List list2;
private ListViewer listViewer;
private boolean markup;
public ListTab() {
super( "List" );
}
@Override
protected void createStyleControls( Composite parent ) {
createStyleButton( "BORDER", SWT.BORDER );
createStyleButton( "SINGLE", SWT.SINGLE );
createStyleButton( "MULTI", SWT.MULTI );
createStyleButton( "H_SCROLL", SWT.H_SCROLL );
createStyleButton( "V_SCROLL", SWT.V_SCROLL );
createOrientationButton();
createVisibilityButton();
createEnablementButton();
createMarkupButton();
createFgColorButton();
createBgColorButton();
createBgImageButton();
createFontChooser();
createCursorCombo();
createSelectionButton();
Group group = new Group( parent, SWT.NONE );
group.setText( "Manipulate Right List" );
group.setLayout( new GridLayout() );
createAddItemsControls( group );
createSetTopIndexControls( group );
createGetTopIndexControls( group );
createShowSelectionControls( group );
createRemoveFirstItemButton( group );
createSelectAllButton( group );
createDeselectAllButton( group );
createSelectButton( group );
createDeselectButton( group );
createSetSelectionButton( group );
}
@Override
protected void createExampleControls( final Composite parent ) {
parent.setLayout( new GridLayout( 2, true ) );
int style = getStyle();
list = new List( parent, style );
list.setLayoutData( new GridData( GridData.FILL_BOTH ) );
Menu menu = new Menu( list );
MenuItem menuItem = new MenuItem( menu, SWT.PUSH );
menuItem.setText( "Context menu item" );
list.setMenu( menu );
listViewer = new ListViewer( list );
listViewer.setContentProvider( new ArrayContentProvider() );
listViewer.setLabelProvider( new LabelProvider() );
listViewer.setInput( ELEMENTS );
list.addListener( SWT.DefaultSelection, new Listener() {
@Override
public void handleEvent( Event event ) {
String item = list.getItem( list.getSelectionIndex() );
String message = "Selected Item: " + item;
MessageDialog.openInformation( getShell(), "Selection", message );
}
} );
registerControl( list );
// List 2
list2 = new List( parent, style );
list2.setData( RWT.MARKUP_ENABLED, new Boolean( markup ) );
list2.add( "Item 0" );
list2.add( "Item 1" );
list2.add( "Item 2" );
if( markup ) {
list2.setData( RWT.CUSTOM_ITEM_HEIGHT, new Integer( 60 ) );
list2.add( "<b>Some Markup Text</b><br/><i>This is italic</i>" );
list2.add( "A real <a href='http://eclipse.org/rap'>link</a>" );
list2.add( "This one opens <a href='http://eclipse.org/rap' target='_blank'>a new tab</a>" );
list2.add( "This is a special <a href='value_of_href' target='_rwt'>RWT Hyperlink</a>" );
list2.add( "This RWT Hyperlik <a href='http://eclipse.org/rap' "
+ "target='_rwt'>has an <i>URL</i></a>" );
list2.addListener( SWT.Selection, new Listener() {
@Override
public void handleEvent( Event event ) {
if( event.detail == RWT.HYPERLINK ) {
log( "Clicked link \"" + event.text + "\"" );
}
}
} );
} else {
createPopupMenu( parent.getShell(), list2 );
}
list2.setLayoutData( new GridData( GridData.FILL_BOTH ) );
registerControl( list2 );
// Code
int separatorStyle = SWT.SEPARATOR | SWT.HORIZONTAL | SWT.SHADOW_OUT;
Label separator = new Label( parent, separatorStyle );
separator.setLayoutData( createGridDataWithSpan() );
Label codeLabel = new Label( parent, SWT.WRAP );
String codeLabelText
= "Please note that the content of the left List is provided by a "
+ "ListViewer with JFace API.";
codeLabel.setText( codeLabelText );
codeLabel.setLayoutData( createGridDataWithSpan() );
Link link = new Link( parent, SWT.NONE );
link.setText( "See <a>example code</a>" );
link.setLayoutData( createGridDataWithSpan() );
link.addSelectionListener( new SelectionAdapter() {
private final String code = getExampleCode();
@Override
public void widgetSelected( final SelectionEvent event ) {
String title = "ListViewer Example Code";
HtmlDialog dialog = new HtmlDialog( parent.getShell(), title, code );
dialog.setSize( 550, 400 );
dialog.open();
}
} );
}
private GridData createGridDataWithSpan() {
GridData gridData = new GridData( GridData.FILL_HORIZONTAL );
gridData.horizontalSpan = 2;
return gridData;
}
private void createPopupMenu( final Shell parent, final List list ) {
final Menu menu = new Menu( parent, SWT.POP_UP );
String[] listItems = list.getItems();
for( int i = 0; i < listItems.length; i++ ) {
MenuItem item = new MenuItem( menu, SWT.PUSH );
item.setText( listItems[ i ] );
}
menu.addMenuListener( new MenuAdapter() {
@Override
public void menuShown( MenuEvent e ) {
MenuItem[] items = menu.getItems();
for( int i = 0; i < items.length; i++ ) {
MenuItem item = items[ i ];
item.setEnabled( list.isSelected( i ) );
}
}
} );
list.setMenu( menu );
}
private void createSelectionButton() {
Button button = new Button( styleComp, SWT.PUSH );
button.setText( "Select first" );
button.addSelectionListener( new SelectionAdapter() {
@Override
public void widgetSelected( SelectionEvent e ) {
listViewer.setSelection( new StructuredSelection( ELEMENTS.get( 0 ) ) );
}
} );
}
protected Button createMarkupButton( ) {
final Button button = new Button( styleComp, SWT.CHECK );
button.setText( "Markup" );
button.setSelection( markup );
button.addSelectionListener( new SelectionAdapter() {
@Override
public void widgetSelected( SelectionEvent event ) {
markup = button.getSelection();
createNew();
}
} );
return button;
}
private void createAddItemsControls( Composite parent ) {
Composite composite = new Composite( parent, SWT.NONE );
composite.setLayout( new GridLayout( 3, false ) );
Label lblAddItem = new Label( composite, SWT.NONE );
lblAddItem.setText( "Add" );
final Text txtAddItem = new Text( composite, SWT.BORDER );
txtAddItem.setLayoutData( new GridData( 50, SWT.DEFAULT) );
Button btnAddItem = new Button( composite, SWT.PUSH );
btnAddItem.setText( "Item(s)" );
btnAddItem.addSelectionListener( new SelectionAdapter() {
@Override
public void widgetSelected( final SelectionEvent event ) {
int count = -1;
String[] listItems = list2.getItems();
int existingItems = listItems.length;
try {
count = Integer.parseInt( txtAddItem.getText() );
} catch( NumberFormatException e ) {
//
}
if( count < 0 ) {
String msg = "Invalid number of ListItems: " + txtAddItem.getText();
MessageDialog.openInformation( getShell(), "Information", msg );
} else {
for( int i = 0; i < count; i++ ) {
list2.add( "Item " + ( existingItems + i ) );
}
}
}
} );
}
private void createSetTopIndexControls( Composite parent ) {
Composite composite = new Composite( parent, SWT.NONE );
composite.setLayout( new GridLayout( 2, false ) );
final Text txtTopIndex = new Text( composite, SWT.BORDER );
txtTopIndex.setLayoutData( new GridData( 50, SWT.DEFAULT) );
Button button = new Button( composite, SWT.PUSH );
button.setText( "setTopIndex" );
button.addSelectionListener( new SelectionAdapter() {
@Override
public void widgetSelected( final SelectionEvent event ) {
try {
int topIndex = Integer.parseInt( txtTopIndex.getText() );
list2.setTopIndex( topIndex );
} catch( NumberFormatException e ) {
String msg = "Invalid number of topIndex: " + txtTopIndex.getText();
MessageDialog.openInformation( getShell(), "Information", msg );
}
}
} );
}
private void createGetTopIndexControls( Composite parent ) {
Composite composite = new Composite( parent, SWT.NONE );
composite.setLayout( new GridLayout( 2, false ) );
final Text txtTopIndex = new Text( composite, SWT.BORDER );
txtTopIndex.setLayoutData( new GridData( 50, SWT.DEFAULT) );
txtTopIndex.setEditable( false );
Button button = new Button( composite, SWT.PUSH );
button.setText( "getTopIndex" );
button.addSelectionListener( new SelectionAdapter() {
@Override
public void widgetSelected( final SelectionEvent event ) {
int topIndex = list2.getTopIndex();
txtTopIndex.setText( String.valueOf( topIndex ) );
}
} );
}
private void createShowSelectionControls( Composite parent ) {
Composite composite = new Composite( parent, SWT.NONE );
composite.setLayout( new GridLayout( 2, false ) );
Button button = new Button( composite, SWT.PUSH );
button.setText( "showSelection" );
button.addSelectionListener( new SelectionAdapter() {
@Override
public void widgetSelected( final SelectionEvent event ) {
list2.showSelection();
}
} );
}
private void createRemoveFirstItemButton( Composite parent ) {
Button button = new Button( parent , SWT.PUSH );
button.setText( "Remove First Item" );
button.addSelectionListener( new SelectionAdapter() {
@Override
public void widgetSelected( SelectionEvent event ) {
if( list2.getItemCount() > 0 ) {
list2.remove( 0 );
}
}
} );
}
private void createSelectAllButton( Composite parent ) {
Button button = new Button( parent, SWT.PUSH );
button.setText( "Select All" );
button.addSelectionListener( new SelectionAdapter() {
@Override
public void widgetSelected( final SelectionEvent event ) {
list2.selectAll();
}
} );
}
private void createDeselectAllButton( Composite parent ) {
Button button = new Button( parent, SWT.PUSH );
button.setText( "Deselect All" );
button.addSelectionListener( new SelectionAdapter() {
@Override
public void widgetSelected( final SelectionEvent event ) {
list2.deselectAll();
}
} );
}
private void createSelectButton( Composite parent ) {
Button button = new Button( parent, SWT.PUSH );
button.setText( "Select 100th item" );
button.addSelectionListener( new SelectionAdapter() {
@Override
public void widgetSelected( final SelectionEvent event ) {
if( list2.getItemCount() > 100 ) {
list2.select( 100 );
}
}
} );
}
private void createDeselectButton( Composite parent ) {
Button button = new Button( parent, SWT.PUSH );
button.setText( "Deselect second item" );
button.addSelectionListener( new SelectionAdapter() {
@Override
public void widgetSelected( final SelectionEvent event ) {
if( list2.getItemCount() > 1 ) {
list2.deselect( 1 );
}
}
} );
}
private void createSetSelectionButton( Composite parent ) {
Button button = new Button( parent, SWT.PUSH );
button.setText( "Set selection to first item" );
button.addSelectionListener( new SelectionAdapter() {
@Override
public void widgetSelected( final SelectionEvent event ) {
if( list2.getItemCount() > 0 ) {
list2.setSelection( new int[] { 0 } );
}
}
} );
}
private String getExampleCode() {
String result
= "<html><head></head></body>"
+ "<pre>"
+ "class ListContentProvider implements IStructuredContentProvider {\n"
+ " public Object[] getElements( final Object inputElement ) {\n"
+ " return ( ( java.util.List )inputElement ).toArray();\n"
+ " }\n"
+ "}\n"
+ "...\n"
+ "java.util.List elements = ...\n"
+ "...\n"
+ "ListViewer viewer = new ListViewer( parent );\n"
+ "viewer.setContentProvider( new ListContentProvider() );\n"
+ "viewer.setLabelProvider( new LabelProvider() );\n"
+ "java.util.List input = new ArrayList();\n"
+ "... // populate list\n"
+ "viewer.setInput( input );\n"
+ "</pre>"
+ "</body>";
return result;
}
}