ComboComponent.java

/*******************************************************************************
 * Copyright (c) 2014 Elphel, Inc.
 * Copyright (c) 2006 Elphel, Inc and Excelsior, LLC.
 * This file is a part of VDT plug-in.
 * VDT plug-in is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * VDT plug-in is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 *  Additional permission under GNU GPL version 3 section 7:
 * If you modify this Program, or any covered work, by linking or combining it
 * with Eclipse or Eclipse plugins (or a modified version of those libraries),
 * containing parts covered by the terms of EPL/CPL, the licensors of this
 * Program grant you additional permission to convey the resulting work.
 * {Corresponding Source for a non-source form of such a combination shall
 * include the source code for the parts of Eclipse or Eclipse plugins used
 * as well as that of the covered work.}
 *******************************************************************************/
package com.elphel.vdt.ui.options.component;

import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;

import com.elphel.vdt.core.tools.params.Parameter;
import com.elphel.vdt.core.tools.params.types.ParamTypeEnum;

public class ComboComponent extends GeneralComponent {

    private Combo comboField;

    public ComboComponent(Parameter param) {
        super(param);
    }
    
    public void createControl(Composite parent) {
        super.createControl(parent);

        GridData  gridData = new GridData( GridData.HORIZONTAL_ALIGN_FILL 
                                         | GridData.GRAB_HORIZONTAL );
         
        ParamTypeEnum type = (ParamTypeEnum)param.getType();

        comboField = new Combo(parent, SWT.DROP_DOWN | SWT.READ_ONLY);
        comboField.setLayoutData(gridData);
//        comboField.setItems(type.getLabels());
        comboField.setItems(type.getValues());
        StringBuilder sb= new StringBuilder();
        String [] values=type.getValues();
        String [] labels=type.getLabels();
/*        
        String paramTooltip=param.getToolTip();
        
        String paramTooltip=null;
        try {
           paramTooltip=comboField.getToolTipText();
        } catch (SWTException e){
        	
        }

        if ((paramTooltip!=null) && (paramTooltip.length()>0)){
        	sb.append(paramTooltip);
        	sb.append("\n---------------------------\n");
        }
*/        
        for (int i=0;i<type.getValues().length;i++){
        	sb.append("\"");
        	sb.append(values[i]);
        	sb.append("\" - ");
        	sb.append(labels[i]);
        	if (i<(values.length-1)){
        		sb.append("\n\n");
        	}
        }
        comboField.setToolTipText(sb.toString());
        comboField.setMenu(createPopupMenu(comboField.getShell()));        
        endCreateControl();
    }    
    
    public Combo getComboField() {
        return comboField;
    }
    
    public void setSelection(String value) {
        ParamTypeEnum type = (ParamTypeEnum)param.getType();
        int pos = type.getValueIndex(param.getValue(null).get(0)); // null for topFormatProcessor

        if(pos < 0)
            pos = 0;

        comboField.select(pos);
    }
    
    protected String getSelection() {
        String item = comboField.getText();
        
        if (item.length() == 0)
            item = param.getDefaultValue(null).get(0); // null for topFormatProcessor

        ParamTypeEnum type = (ParamTypeEnum)param.getType();
//        int pos = type.getLabelIndex(item);
        int pos = type.getValueIndex(item);
        String[] values = type.getValues();
        
        return values[pos];
    }
    
    protected boolean isDisposed() {
        return (comboField == null)
            ||  comboField.isDisposed();
    }
    
    public void setEnabled (boolean enabled) {
        super.setEnabled(enabled);
        comboField.setEnabled(enabled);
    }
    
    public void setVisible (boolean visible) {
        super.setVisible(visible);
        comboField.setVisible(visible);
    }
    
    public void setFocus() {
        comboField.setFocus();
    }
    
    protected void addListeners() {
        comboField.addModifyListener(modifyListener);
    }

    protected void removeListeners() {
        comboField.removeModifyListener(modifyListener);
    }
    
    protected void switchState(boolean defaulted) {
        comboField.setBackground(defaulted ? colorBackgroundDefault
                                           : colorBackground );     
    }
    
} // class ComboComponent