com.twosigma.beaker.easyform.EasyFormComponent.java Source code

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Here is the source code for com.twosigma.beaker.easyform.EasyFormComponent.java

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/*
 *  Copyright 2015 TWO SIGMA OPEN SOURCE, LLC
 *
 *  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.twosigma.beaker.easyform;

import com.twosigma.beaker.easyform.formitem.EasyFormListener;
import org.apache.commons.lang3.StringUtils;

import java.util.LinkedList;
import java.util.List;

public class EasyFormComponent {

    private String value;
    private boolean enabled = true;
    //Acts like ID
    private String label;
    private List<EasyFormListener> onChangeListeners = new LinkedList<>();
    private List<EasyFormListener> onInitListeners = new LinkedList<>();

    public EasyFormComponent() {
        setValue(StringUtils.EMPTY);
    }

    public void fireInit() {
        for (EasyFormListener listener : onInitListeners) {
            listener.execute(value);
        }
    }

    public EasyFormComponent onInit(final EasyFormListener listener) {
        addOnInitListener(listener);
        return this;
    }

    public void addOnInitListener(final EasyFormListener listener) {
        if (listener != null) {
            onInitListeners.add(listener);
        }
    }

    public void removeOnInitListener(final EasyFormListener listener) {
        if (onInitListeners.contains(listener)) {
            onInitListeners.remove(listener);
        }
    }

    public EasyFormComponent onChange(final EasyFormListener listener) {
        addOnChangeListener(listener);
        return this;
    }

    public void fireChanged() {
        for (EasyFormListener listener : onChangeListeners) {
            listener.execute(this.getValue());
        }
    }

    public void addOnChangeListener(final EasyFormListener listener) {
        if (listener != null) {
            onChangeListeners.add(listener);
        }
    }

    public void removeOnChangeListener(final EasyFormListener listener) {
        if (onChangeListeners.contains(listener)) {
            onChangeListeners.remove(listener);
        }
    }

    public void clearListeners() {
        onChangeListeners.clear();
        onInitListeners.clear();
    }

    public boolean isEnabled() {
        return enabled;
    }

    public void setEnabled(final boolean enabled) {
        this.enabled = enabled;
    }

    public String getLabel() {
        return label;
    }

    public void setLabel(final String label) {
        this.label = label;
    }

    public String getValue() {
        return value;
    }

    public void setValue(final String value) {
        this.value = value;
    }

    /**
     * Throw IllegalArgumentException if such value can't be set to this component
     */
    protected boolean checkValue(Object value) {
        return true;
    }

    public boolean isButton() {
        return false;
    }
}