griffon.swing.editors.ColorPropertyEditor.java Source code

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Here is the source code for griffon.swing.editors.ColorPropertyEditor.java

Source

/*
 * Copyright 2010-2013 the original author or authors.
 *
 * 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 griffon.swing.editors;

import griffon.core.resources.editors.AbstractPropertyEditor;
import griffon.core.resources.formatters.Formatter;
import griffon.core.resources.formatters.ParseException;
import griffon.swing.formatters.ColorFormatter;
import griffon.util.GriffonNameUtils;

import java.awt.Color;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import static org.apache.commons.lang.StringUtils.isBlank;

/**
 * @author Andres Almiray
 * @author Alexander Klein
 * @since 1.1.0
 */
public class ColorPropertyEditor extends AbstractPropertyEditor {
    public static String format(Color color) {
        return ColorFormatter.LONG.format(color);
    }

    @Override
    public String getAsText() {
        return GriffonNameUtils.isBlank(getFormat()) ? format((Color) getValueInternal()) : getFormattedValue();
    }

    protected void setValueInternal(Object value) {
        if (null == value) {
            super.setValueInternal(null);
        } else if (value instanceof CharSequence) {
            handleAsString(String.valueOf(value).trim());
        } else if (value instanceof List) {
            handleAsList((List) value);
        } else if (value instanceof Map) {
            handleAsMap((Map) value);
        } else if (value instanceof Number) {
            handleAsNumber((Number) value);
        } else if (value instanceof Color) {
            super.setValueInternal(value);
        } else {
            throw illegalValue(value, Color.class);
        }
    }

    @Override
    protected Formatter resolveFormatter() {
        return !isBlank(getFormat()) ? ColorFormatter.getInstance(getFormat()) : null;
    }

    private void handleAsString(String str) {
        try {
            super.setValueInternal(ColorFormatter.parseColor(str));
        } catch (ParseException e) {
            throw illegalValue(str, Color.class, e);
        }
    }

    private void handleAsList(List list) {
        List values = new ArrayList();
        values.addAll(list);
        switch (list.size()) {
        case 3:
            values.add(255);
            break;
        case 4:
            // ok
            break;
        default:
            throw illegalValue(list, Color.class);
        }
        for (int i = 0, valuesSize = values.size(); i < valuesSize; i++) {
            Object val = values.get(i);
            if (val instanceof Number) {
                values.set(i, parse((Number) val));
            } else if (val instanceof CharSequence) {
                values.set(i, parse(String.valueOf(val)));
            }
        }
        super.setValueInternal(new Color((Integer) values.get(0), (Integer) values.get(1), (Integer) values.get(2),
                (Integer) values.get(3)));
    }

    private void handleAsMap(Map map) {
        int r = getMapValue(map, "red", 0);
        int g = getMapValue(map, "green", 0);
        int b = getMapValue(map, "blue", 0);
        int a = getMapValue(map, "alpha", 255);
        super.setValueInternal(new Color(r, g, b, a));
    }

    private int parse(String val) {
        try {
            return Integer.parseInt(String.valueOf(val).trim(), 16) & 0xFF;
        } catch (NumberFormatException e) {
            throw illegalValue(val, Color.class, e);
        }
    }

    private int parse(Number val) {
        return val.intValue() & 0xFF;
    }

    private int getMapValue(Map map, String key, int defaultValue) {
        Object val = map.get(key);
        if (null == val)
            val = map.get(String.valueOf(key.charAt(0)));
        if (null == val) {
            return defaultValue;
        } else if (val instanceof CharSequence) {
            return parse(String.valueOf(val));
        } else if (val instanceof Number) {
            return parse((Number) val);
        }
        throw illegalValue(map, Color.class);
    }

    private void handleAsNumber(Number value) {
        int c = parse(value);
        super.setValueInternal(new Color(c, c, c, 255));
    }
}