ColorPickerDialog.java

/*
 * Copyright 2015 JBoss, by Red Hat, 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.uberfire.ext.widgets.common.client.colorpicker;

import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Widget;
import org.uberfire.ext.widgets.common.client.colorpicker.dialog.Dialog;
import org.uberfire.ext.widgets.common.client.resources.i18n.CommonConstants;

public class ColorPickerDialog extends Dialog {

    private SaturationLightnessPicker slPicker;
    private HuePicker huePicker;
    private String color;

    @Override
    protected Widget createDialogArea() {
        setText(CommonConstants.INSTANCE.ColorPickerTitle());

        HorizontalPanel panel = new HorizontalPanel();

        // the pickers
        slPicker = new SaturationLightnessPicker();
        panel.add(slPicker);
        huePicker = new HuePicker();
        panel.add(huePicker);

        // bind saturation/lightness picker and hue picker together
        huePicker.addHueChangedHandler(new HueChangedHandler() {
            public void hueChanged(HueChangedEvent event) {
                slPicker.setHue(event.getHue());
            }
        });

        return panel;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        int[] rgb = ColorUtils.getRGB(color);
        int[] hsl = ColorUtils.rgb2hsl(rgb);
        huePicker.setHue(hsl[0]);
        slPicker.setColor(color);
    }

    @Override
    protected void buttonClicked(Widget button) {
        // remember color when "OK" is clicked
        if (button == getOkButton()) {
            color = slPicker.getColor();
        }

        close(button == getCancelButton());
    }
}