LabelImpl.java example

Explorer
jo-widgets-master
/*
 * Copyright (c) 2010, Michael Grossmann
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * * Neither the name of the jo-widgets.org nor the
 * names of its contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */
package org.jowidgets.impl.widgets.composed;

import org.jowidgets.api.dnd.IDragSource;
import org.jowidgets.api.dnd.IDropTarget;
import org.jowidgets.api.model.item.IMenuModel;
import org.jowidgets.api.widgets.IComposite;
import org.jowidgets.api.widgets.IIcon;
import org.jowidgets.api.widgets.ILabel;
import org.jowidgets.api.widgets.ITextLabel;
import org.jowidgets.api.widgets.descriptor.IIconDescriptor;
import org.jowidgets.api.widgets.descriptor.ITextLabelDescriptor;
import org.jowidgets.api.widgets.descriptor.setup.ILabelSetup;
import org.jowidgets.common.color.IColorConstant;
import org.jowidgets.common.image.IImageConstant;
import org.jowidgets.common.types.Dimension;
import org.jowidgets.common.types.Markup;
import org.jowidgets.common.widgets.controller.IPopupDetectionListener;
import org.jowidgets.common.widgets.layout.MigLayoutDescriptor;
import org.jowidgets.tools.widgets.blueprint.BPF;
import org.jowidgets.tools.widgets.invoker.ColorSettingsInvoker;
import org.jowidgets.tools.widgets.invoker.VisibiliySettingsInvoker;
import org.jowidgets.tools.widgets.wrapper.ControlWrapper;
import org.jowidgets.util.NullCompatibleEquivalence;

public final class LabelImpl extends ControlWrapper implements ILabel {

    private final IIcon iconWidget;
    private final ITextLabel textLabelWidget;
    private final IComposite composite;

    private String text;
    private IImageConstant icon;

    public LabelImpl(final IComposite composite, final ILabelSetup setup) {
        super(composite);

        this.composite = composite;

        final IIconDescriptor iconDescriptor = BPF.icon(setup.getIcon()).setSetup(setup);
        this.iconWidget = composite.add(iconDescriptor, "w 0::");
        this.icon = setup.getIcon();

        final ITextLabelDescriptor textLabelDescriptor = BPF.textLabel().setSetup(setup);
        this.textLabelWidget = composite.add(textLabelDescriptor, "w 0::");

        setLayout();

        VisibiliySettingsInvoker.setVisibility(setup, this);
        ColorSettingsInvoker.setColors(setup, this);
    }

    @Override
    public void setText(final String text) {
        if (!NullCompatibleEquivalence.equals(text, this.text)) {
            this.text = text;
            textLabelWidget.setText(text);
            composite.layoutBegin();
            composite.layoutEnd();
        }
    }

    @Override
    public String getText() {
        return text;
    }

    @Override
    public void setToolTipText(final String text) {
        textLabelWidget.setToolTipText(text);
        iconWidget.setToolTipText(text);
    }

    @Override
    public void setForegroundColor(final IColorConstant colorValue) {
        textLabelWidget.setForegroundColor(colorValue);
    }

    @Override
    public void setBackgroundColor(final IColorConstant colorValue) {
        textLabelWidget.setBackgroundColor(colorValue);
        iconWidget.setBackgroundColor(colorValue);
    }

    @Override
    public IColorConstant getForegroundColor() {
        return textLabelWidget.getForegroundColor();
    }

    @Override
    public IColorConstant getBackgroundColor() {
        return textLabelWidget.getBackgroundColor();
    }

    @Override
    public void setEnabled(final boolean enabled) {
        textLabelWidget.setEnabled(enabled);
    }

    @Override
    public boolean isEnabled() {
        return textLabelWidget.isEnabled();
    }

    @Override
    public void setPopupMenu(final IMenuModel popupMenu) {
        composite.setPopupMenu(popupMenu);
        iconWidget.setPopupMenu(popupMenu);
        textLabelWidget.setPopupMenu(popupMenu);
    }

    @Override
    public void addPopupDetectionListener(final IPopupDetectionListener listener) {
        textLabelWidget.addPopupDetectionListener(listener);
        iconWidget.addPopupDetectionListener(listener);
        composite.addPopupDetectionListener(listener);
    }

    @Override
    public void removePopupDetectionListener(final IPopupDetectionListener listener) {
        textLabelWidget.removePopupDetectionListener(listener);
        iconWidget.removePopupDetectionListener(listener);
        composite.removePopupDetectionListener(listener);
    }

    @Override
    public void setMarkup(final Markup markup) {
        textLabelWidget.setMarkup(markup);
    }

    @Override
    public void setFontSize(final int size) {
        textLabelWidget.setFontSize(size);
    }

    @Override
    public void setFontName(final String fontName) {
        textLabelWidget.setFontName(fontName);
    }

    @Override
    public void setIcon(final IImageConstant icon) {
        final boolean layoutChanged = (icon == null && this.icon != null) || (icon != null && this.icon == null);
        this.icon = icon;

        final Dimension lastPreferredSize = iconWidget.getPreferredSize();
        iconWidget.setIcon(icon);
        if (layoutChanged) {
            setLayout();
        }
        if (!lastPreferredSize.equals(iconWidget.getPreferredSize()) || layoutChanged) {
            composite.layoutBegin();
            composite.layoutEnd();
        }

    }

    private void setLayout() {
        if (icon == null) {
            //TODO This will no work under swt, because it leads to space greedy label
            //this.composite.setLayout(new MigLayoutDescriptor("0[]0[grow, 0::]0", "0[]0"));
            this.composite.setLayout(new MigLayoutDescriptor("0[][grow, 0::]0", "0[]0"));
        }
        else {
            this.composite.setLayout(new MigLayoutDescriptor("0[][grow, 0::]0", "0[]0"));
        }
    }

    @Override
    public IImageConstant getIcon() {
        return icon;
    }

    @Override
    public IDragSource getDragSource() {
        return textLabelWidget.getDragSource();
    }

    @Override
    public IDropTarget getDropTarget() {
        return textLabelWidget.getDropTarget();
    }

}