org.drools.guvnor.client.decisiontable.GroupingsPanel.java Source code

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Here is the source code for org.drools.guvnor.client.decisiontable.GroupingsPanel.java

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/*
 * Copyright 2010 JBoss Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.drools.guvnor.client.decisiontable;

import org.drools.guvnor.client.common.SmallLabel;
import org.drools.guvnor.client.messages.Constants;
import org.drools.ide.common.client.modeldriven.dt.ActionCol;
import org.drools.ide.common.client.modeldriven.dt.AttributeCol;
import org.drools.ide.common.client.modeldriven.dt.ConditionCol;
import org.drools.ide.common.client.modeldriven.dt.GuidedDecisionTable;
import org.drools.ide.common.client.modeldriven.dt.MetadataCol;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.ListBox;

/**
 * 
 * @author rikkola
 *
 */
public class GroupingsPanel extends HorizontalPanel {

    private Constants constants = ((Constants) GWT.create(Constants.class));

    private final ListBox columnsListBox = new ListBox();
    private final GuidedDecisionTable guidedDecisionTable;
    private final Command refreshCommand;

    public GroupingsPanel(final GuidedDecisionTable guidedDecisionTable, final Command refreshCommand) {
        this.guidedDecisionTable = guidedDecisionTable;
        this.refreshCommand = refreshCommand;

        initColumnsListBox();

        add(new SmallLabel(constants.GroupByColumn()));
        add(columnsListBox);

        add(getOkButton());
    }

    private void initColumnsListBox() {
        columnsListBox.addItem(constants.Description(), "desc"); //NON-NLS

        addListItems();

        if (guidedDecisionTable.getGroupField() == null) {
            columnsListBox.setSelectedIndex(columnsListBox.getItemCount() - 1);
        }
    }

    private Button getOkButton() {
        Button ok = new Button(constants.Apply());
        ok.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent w) {
                guidedDecisionTable.setGroupField(columnsListBox.getValue(columnsListBox.getSelectedIndex()));
                refreshCommand.execute();
            }
        });
        return ok;
    }

    private void addListItems() {
        addMetaDataColumns();
        addAttributeColumns();
        addConditionColumns();
        addActionColumns();
        addNone();
    }

    private void addNone() {
        columnsListBox.addItem(constants.none(), "");
    }

    private void addActionColumns() {
        for (ActionCol c : guidedDecisionTable.getActionCols()) {
            columnsListBox.addItem(c.getHeader(), c.getHeader());
            if (c.getHeader().equals(guidedDecisionTable.getGroupField())) {
                columnsListBox.setSelectedIndex(columnsListBox.getItemCount() - 1);
            }
        }
    }

    private void addConditionColumns() {
        for (ConditionCol c : guidedDecisionTable.getConditionCols()) {
            columnsListBox.addItem(c.getHeader(), c.getHeader());
            if (c.getHeader().equals(guidedDecisionTable.getGroupField())) {
                columnsListBox.setSelectedIndex(columnsListBox.getItemCount() - 1);
            }
        }
    }

    private void addAttributeColumns() {
        for (AttributeCol c : guidedDecisionTable.getAttributeCols()) {
            columnsListBox.addItem(c.attr, c.attr);
            if (c.attr.equals(guidedDecisionTable.getGroupField())) {
                columnsListBox.setSelectedIndex(columnsListBox.getItemCount() - 1);
            }
        }
    }

    private void addMetaDataColumns() {
        for (MetadataCol c : guidedDecisionTable.getMetadataCols()) {
            columnsListBox.addItem(c.attr, c.attr);
            if (c.attr.equals(guidedDecisionTable.getGroupField())) {
                columnsListBox.setSelectedIndex(columnsListBox.getItemCount() - 1);
            }
        }
    }

    public void refresh() {
        columnsListBox.clear();
        addListItems();
    }
}