com.qualogy.qafe.gwt.client.component.QSuggestBox.java Source code

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Here is the source code for com.qualogy.qafe.gwt.client.component.QSuggestBox.java

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/**
 * Copyright 2008-2015 Qualogy Solutions B.V.
 *
 * 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 com.qualogy.qafe.gwt.client.component;

import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.google.gwt.user.client.ui.SuggestBox;
import com.google.gwt.user.client.ui.SuggestOracle.Suggestion;
import com.google.gwt.user.client.ui.TextBoxBase;
import com.google.gwt.user.client.ui.Widget;

public class QSuggestBox extends SuggestBox implements HasDataModel, HasEditable {

    private QSuggestOracle qoracle = null;
    private QMultiWordSuggestion currentSuggestion = null;
    private int suggestCharactersLength = 1;

    public QSuggestBox(QSuggestOracle oracle) {
        super(oracle);
        init(oracle);
    }

    public QSuggestBox(QSuggestOracle oracle, TextBoxBase box) {
        super(oracle, box);
        init(oracle);
    }

    protected void init(QSuggestOracle oracle) {
        setOracle(oracle);
        setAnimationEnabled(true);
        setPopupStyleName("qafe_suggest_popup");
        addDefaultEventHandler();
    }

    public int getSuggestCharactersLength() {
        return suggestCharactersLength;
    }

    public void setSuggestCharactersLength(int suggestCharactersLength) {
        this.suggestCharactersLength = suggestCharactersLength;
    }

    public QMultiWordSuggestion getCurrentSuggestion() {
        return currentSuggestion;
    }

    public QSuggestOracle getOracle() {
        return qoracle;
    }

    public void setOracle(QSuggestOracle oracle) {
        this.qoracle = oracle;
    }

    private void addDefaultEventHandler() {
        addSelectionHandler(new SelectionHandler<Suggestion>() {

            public void onSelection(SelectionEvent<Suggestion> event) {
                currentSuggestion = (QMultiWordSuggestion) event.getSelectedItem();
            }
        });
    }

    public void addChangeHandler(ChangeHandler handler) {
        getTextBox().addChangeHandler(handler);
    }

    public Widget getWidget() {
        return getWidget();
    }

    public void clearSuggestions() {
        if (getOracle() != null) {
            getOracle().clear();
        }
    }

    public Object getDataModel() {
        if (getCurrentSuggestion() != null) {
            return getCurrentSuggestion().getData();
        }
        return null;
    }

    public boolean isEditable() {
        return !getTextBox().isReadOnly();
    }

    public void setEditable(boolean editable) {
        getTextBox().setReadOnly(!editable);
    }
}