annis.gui.querybuilder.EdgeWindow.java Source code

Introduction

Here is the source code for annis.gui.querybuilder.EdgeWindow.java

Source

/*
 * Copyright 2011 Corpuslinguistic working group Humboldt University Berlin.
 *
 * 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 annis.gui.querybuilder;

import annis.gui.querybuilder.NodeWindow.SimpleNewItemHandler;
import com.vaadin.data.Property.ValueChangeEvent;
import com.vaadin.data.Property.ValueChangeListener;
import com.vaadin.server.FontAwesome;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.ComboBox;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Panel;
import com.vaadin.ui.TextField;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.themes.ValoTheme;

/**
 *
 * @author thomas
 */
public class EdgeWindow extends Panel implements Button.ClickListener {

    private TigerQueryBuilderCanvas parent;

    private ComboBox cbOperator;
    private Button btClose;
    private NodeWindow source;
    private NodeWindow target;
    private TextField txtOperator;

    private final static String CUSTOM = "custom";

    public EdgeWindow(final TigerQueryBuilderCanvas parent, NodeWindow source, NodeWindow target) {
        this.parent = parent;
        this.source = source;
        this.target = target;

        setSizeFull();

        // HACK: use our own border since the one from chameleon does not really work
        addStyleName(ValoTheme.PANEL_BORDERLESS);
        addStyleName("border-layout");
        addStyleName("white-panel");

        VerticalLayout vLayout = new VerticalLayout();
        setContent(vLayout);
        vLayout.setMargin(false);

        HorizontalLayout toolbar = new HorizontalLayout();
        toolbar.addStyleName("toolbar");
        toolbar.setWidth("100%");
        toolbar.setHeight("-1px");
        vLayout.addComponent(toolbar);

        Label lblTitle = new Label("AQL Operator");
        lblTitle.setWidth("100%");

        toolbar.addComponent(lblTitle);
        toolbar.setComponentAlignment(lblTitle, Alignment.MIDDLE_LEFT);
        toolbar.setExpandRatio(lblTitle, 1.0f);

        btClose = new Button();
        btClose.addStyleName(ValoTheme.BUTTON_ICON_ONLY);
        btClose.addStyleName(ValoTheme.BUTTON_SMALL);
        btClose.setIcon(FontAwesome.TIMES_CIRCLE);
        btClose.setWidth("-1px");
        btClose.addListener((Button.ClickListener) this);
        toolbar.addComponent(btClose);

        toolbar.setComponentAlignment(btClose, Alignment.MIDDLE_RIGHT);
        toolbar.setExpandRatio(btClose, 0.0f);

        cbOperator = new ComboBox();
        cbOperator.setNewItemsAllowed(false);
        cbOperator.setTextInputAllowed(false);
        cbOperator.setNullSelectionAllowed(true);
        cbOperator.addItem(CUSTOM);
        cbOperator.setItemCaption(CUSTOM, "custom");
        cbOperator.setNullSelectionItemId(CUSTOM);
        cbOperator.setNewItemHandler(new SimpleNewItemHandler(cbOperator));
        cbOperator.setImmediate(true);
        vLayout.addComponent(cbOperator);
        for (AQLOperator o : AQLOperator.values()) {
            cbOperator.addItem(o);
            cbOperator.setItemCaption(o, o.getDescription() + " (" + o.getOp() + ")");
        }
        cbOperator.setValue(AQLOperator.DIRECT_PRECEDENCE);
        cbOperator.addValueChangeListener(new ValueChangeListener() {
            @Override
            public void valueChange(ValueChangeEvent event) {

                Object val = event.getProperty().getValue();
                if (val instanceof AQLOperator) {
                    txtOperator.setValue(((AQLOperator) val).getOp());
                }
            }
        });

        cbOperator.setWidth("100%");
        cbOperator.setHeight("20px");

        txtOperator = new TextField();
        txtOperator.setValue(".");
        txtOperator.setInputPrompt("select operator definition");
        txtOperator.setSizeFull();
        txtOperator.addValueChangeListener(new OperatorValueChangeListener(parent));
        txtOperator.setImmediate(true);

        vLayout.addComponent(txtOperator);

        vLayout.setExpandRatio(cbOperator, 1.0f);

    }

    @Override
    public void buttonClick(ClickEvent event) {
        if (event.getButton() == btClose) {
            parent.deleteEdge(this);
        }
    }

    public NodeWindow getSource() {
        return source;
    }

    public NodeWindow getTarget() {
        return target;
    }

    private AQLOperator findAQLOperatorForText(String txt) {
        for (AQLOperator op : AQLOperator.values()) {
            if (op.getOp().equals(txt)) {
                return op;
            }
        }
        return null;
    }

    public String getOperator() {
        String val = txtOperator.getValue();
        if (val == null || val.isEmpty()) {
            return "SET_OPERATOR";
        } else {
            return val;
        }
    }

    private class OperatorValueChangeListener implements ValueChangeListener {

        private final TigerQueryBuilderCanvas parent;

        public OperatorValueChangeListener(TigerQueryBuilderCanvas parent) {
            this.parent = parent;
        }

        @Override
        public void valueChange(ValueChangeEvent event) {

            Object oldVal = cbOperator.getValue();
            if (CUSTOM.equals(oldVal)) {
                oldVal = null;
            }
            AQLOperator newVal = findAQLOperatorForText((String) event.getProperty().getValue());
            if (oldVal != newVal) {
                cbOperator.setValue(newVal);
            }
            if (parent != null) {
                parent.updateQuery();
            }
        }
    }

}