FilterControlString.java example

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/*******************************************************************************
 * Copyright (c) 2014 Formal Mind GmbH.
 * 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:
 *     Michael Jastram - initial API and implementation
 ******************************************************************************/
package org.eclipse.rmf.reqif10.search.filter.ui;

import java.util.List;

import org.eclipse.rmf.reqif10.AttributeDefinition;
import org.eclipse.rmf.reqif10.AttributeDefinitionString;
import org.eclipse.rmf.reqif10.AttributeDefinitionXHTML;
import org.eclipse.rmf.reqif10.search.filter.AbstractTextFilter;
import org.eclipse.rmf.reqif10.search.filter.AbstractTextFilter.InternalAttribute;
import org.eclipse.rmf.reqif10.search.filter.IFilter;
import org.eclipse.rmf.reqif10.search.filter.IFilter.Operator;
import org.eclipse.rmf.reqif10.search.filter.StringFilter;
import org.eclipse.rmf.reqif10.search.filter.XhtmlFilter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Text;

/**
 * Used for plain text and XHTML
 * 
 * @author jastram
 */
public class FilterControlString extends FilterControl {

	private Text text;
	private Button caseSensitive;

	public FilterControlString(FilterPanel parent, StringFilter.InternalAttribute attribute) {
		super(parent, attribute);
	}

	public FilterControlString(FilterPanel parent,
			AttributeDefinition attribute) {
		super(parent, attribute);
	}

	public FilterControlString(FilterPanel parent, AbstractTextFilter template) {
		super(parent, template);
	}

	@Override
	protected List<Operator> getOperators() {
		if (attribute instanceof AttributeDefinitionXHTML) {
			return XhtmlFilter.SUPPORTED_OPERATORS.asList();
		} else {
			return StringFilter.SUPPORTED_OPERATORS.asList();
		}
	}

	@Override
	protected void updateValueControls(boolean initialize) {
		if (getOperator() == Operator.IS_SET
				|| getOperator() == Operator.IS_NOT_SET) {
			showControl(false);
		} else {
			showControl(true);
		}
		if (initialize) {
			if (text != null) {
				caseSensitive.setSelection(((AbstractTextFilter) templateFilter)
						.isCaseSensitive());
				text.setText((String) templateFilter.getFilterValue1());
	
			}
		}
	}

	private void showControl(boolean show) {
		if (show && text == null) {
			caseSensitive = new Button(this, SWT.CHECK);
			caseSensitive.setText("Aa");
			caseSensitive.setToolTipText("Case Sensitive");
			GridData layoutData = new GridData(SWT.LEFT, SWT.CENTER, false, false);
			caseSensitive.setLayoutData(layoutData);
			
			text = new Text(this, SWT.SINGLE | SWT.BORDER | SWT.FILL);
			layoutData = new GridData(SWT.FILL, SWT.CENTER, true, false);
			text.setLayoutData(layoutData);
		}
		if (!show && text != null) {
			text.dispose();
			text = null;
			caseSensitive.dispose();
			caseSensitive = null;
		}
	}

	public IFilter getFilter() {
		String value = text == null ? null : text.getText();
		boolean cv = caseSensitive == null ? false : caseSensitive.getSelection();
		
		if (attribute instanceof InternalAttribute) {
			return new StringFilter(getOperator(), value, (InternalAttribute) attribute, cv);
		} else if (attribute instanceof AttributeDefinitionString) {
			return new StringFilter(getOperator(), value, (AttributeDefinitionString) attribute, cv);
		} else if (attribute instanceof AttributeDefinitionXHTML) {
			return new XhtmlFilter(getOperator(), value, (AttributeDefinitionXHTML) attribute, cv);
		} else {
			throw new IllegalStateException("Can't handle: " + attribute);
		}
	}

}