/*******************************************************************************
 * Copyright (c) 2016 EclipseSource 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:
 *    EclipseSource - initial API and implementation
 ******************************************************************************/
package org.eclipse.rap.nebula.widgets.richtext.demo.examples;

import org.eclipse.nebula.widgets.richtext.RichTextEditor;
import org.eclipse.rap.examples.ExampleUtil;
import org.eclipse.rap.examples.IExamplePage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
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.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;


public class NebulaRichTextExamplePage implements IExamplePage {

  @Override
  public void createControl( Composite parent ) {
    parent.setLayout( ExampleUtil.createMainLayout( 1 ) );
    createEditorExample( parent );
  }

  private static void createEditorExample( final Composite parent ) {
    final Display display = parent.getDisplay();
    Composite composite = new Composite( parent, SWT.NONE );
    composite.setLayoutData( ExampleUtil.createFillData() );
    composite.setLayout( ExampleUtil.createGridLayout( 1, true, true, true ) );
    final RichTextEditor richTextEditor = new RichTextEditor( composite, SWT.BORDER );
    richTextEditor.setText( "<b>Rich</b> <i>Text</i> <u>Editor</u>" );
    GridData layoutData = new GridData( SWT.FILL, SWT.FILL, true, true  );
    richTextEditor.setLayoutData( layoutData );
    richTextEditor.setBackground( new Color( display, 247, 247, 247 ) );
    Composite toolbar = new Composite( composite, SWT.NONE );
    toolbar.setLayoutData( new GridData( SWT.FILL, SWT.FILL, true, false  ) );
    toolbar.setLayout( new GridLayout( 3, false ) );
    Button showContent = new Button( toolbar, SWT.PUSH );
    showContent.setText( "Show Content" );
    showContent.addSelectionListener( new SelectionAdapter() {
      @Override
      public void widgetSelected( SelectionEvent e ) {
        showContent( parent, richTextEditor, false );
      }
    } );
    Button showSource = new Button( toolbar, SWT.PUSH );
    showSource.setText( "Show Source" );
    showSource.addSelectionListener( new SelectionAdapter() {
      @Override
      public void widgetSelected( SelectionEvent e ) {
        showContent( parent, richTextEditor, true );
      }
    } );
    Button clearBtn = new Button( toolbar, SWT.NONE );
    clearBtn.setText( "Clear" );
    clearBtn.addSelectionListener( new SelectionAdapter() {
      @Override
      public void widgetSelected( SelectionEvent e ) {
        richTextEditor.setText( "" );
      }
    } );

  }

  private static void showContent( Composite parent, RichTextEditor editor, boolean source ) {
    int style = SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL;
    final Shell content = new Shell( parent.getShell(), style );
    content.setLayout( new GridLayout( 1, true ) );
    String text = editor.getText();
    if( source ) {
      content.setText( "Rich Text Source" );
      Text viewer = new Text( content, SWT.MULTI | SWT.WRAP );
      viewer.setLayoutData( new GridData( 400, 400 ) );
      viewer.setText( text );
      viewer.setEditable( false );
    } else {
      content.setText( "Rich Text" );
      Browser viewer = new Browser( content, SWT.NONE );
      viewer.setLayoutData( new GridData( 400, 400 ) );
      viewer.setText( text );
      viewer.setEnabled( false );
    }
    Button ok = new Button( content, SWT.PUSH );
    ok.setLayoutData( new GridData( SWT.RIGHT, SWT.BOTTOM, false, false ) );
    ok.setText( "OK" );
    ok.addSelectionListener( new SelectionAdapter() {
      @Override
      public void widgetSelected( SelectionEvent e ) {
        content.dispose();
      }
    } );
    content.setDefaultButton( ok );
    content.pack();
    Display display = parent.getDisplay();
    int left = ( display.getClientArea().width / 2 ) - ( content.getBounds().width / 2 );
    content.setLocation( left, 40 );
    content.open();
    ok.setFocus();
  }

}