TLOWrapper.java

/*
 * Copyright 2008 Jeff Dwyer
 * 
 * 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.apress.progwt.client.gui.timeline;

import com.apress.progwt.client.college.gui.ext.FocusPanelExt;
import com.apress.progwt.client.college.gui.ext.JSUtil;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.MouseWheelListener;
import com.google.gwt.user.client.ui.SourcesMouseWheelEvents;
import com.google.gwt.user.client.ui.Widget;

public class TLOWrapper<T> extends FocusPanelExt implements
        TimelineRemembersPosition, SourcesMouseWheelEvents {

    private TimeLineObj<T> tlo;
    private int top;

    private Image dragImage;
    private Label label;
    private Widget mainWidget;

    public TLOWrapper(ZoomableTimeline<T> timeline,
            final TimeLineObj<T> tlo, Image dragImage, Widget mainWidget,
            Label mainLabel) {
        this.tlo = tlo;
        this.top = 0;
        this.dragImage = dragImage;
        this.mainWidget = mainWidget;

        HorizontalPanel panel = new HorizontalPanel();

        if (mainLabel == null) {
            label = new Label("", false);
        } else {
            label = mainLabel;
        }

        TLORangeEdge edge = new TLORangeEdge(timeline, tlo, this, true,
                dragImage);

        panel.add(edge);
        panel.add(label);
        if (mainWidget != null) {
            panel.add(mainWidget);
        }

        addClickListener(timeline);
        addDblClickListener(timeline);

        setWidget(panel);

        label.setStyleName("H-TLOWrapper");

        JSUtil.disableSelect(getElement());
    }

    public int getLeft() {
        return tlo.getLeft();
    }

    public int getTop() {
        return top;
    }

    public Widget getWidget() {

        return this;
    }

    public void addMouseWheelListener(MouseWheelListener listener) {
        label.addMouseWheelListener(listener);
        dragImage.addMouseWheelListener(listener);
        if (mainWidget instanceof SourcesMouseWheelEvents) {
            SourcesMouseWheelEvents mI = (SourcesMouseWheelEvents) mainWidget;
            mI.addMouseWheelListener(listener);
        }
    }

    public void removeMouseWheelListener(MouseWheelListener listener) {
        dragImage.removeMouseWheelListener(listener);
        label.removeMouseWheelListener(listener);
        if (mainWidget instanceof SourcesMouseWheelEvents) {
            SourcesMouseWheelEvents mI = (SourcesMouseWheelEvents) mainWidget;
            mI.removeMouseWheelListener(listener);
        }
    }

    public void setTop(int top) {
        this.top = top;
    }

    public void zoomToScale(double currentScale) {

    }

    public TimeLineObj<T> getTLO() {
        return tlo;
    }

    /**
     * PEND MED weak 11 * #letters = width assumption
     */
    public int getWidth() {
        return 11 * tlo.getObject().toString().length();
    }

    public String toString() {
        return "TLOWrapper " + tlo.getObject().toString();
    }

    public void updateTitle() {
        label.setText(tlo.getHasDate().getTitle());
    }

}