org.gems.ajax.client.figures.AbstractDiagramElement.java Source code

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Here is the source code for org.gems.ajax.client.figures.AbstractDiagramElement.java

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package org.gems.ajax.client.figures;

import java.util.ArrayList;
import java.util.List;

import org.gems.ajax.client.connection.Connection;
import org.gems.ajax.client.edit.AnchorManager;
import org.gems.ajax.client.event.UIEventConnector;
import org.gems.ajax.client.geometry.Point;
import org.gems.ajax.client.geometry.Rectangle;
import org.gems.ajax.client.util.GraphicsConstants;
import org.gems.ajax.client.util.Util;
import org.gems.ajax.client.util.dojo.MoveListener;

import com.google.gwt.user.client.ui.Widget;

/******************************************************************************
 * Copyright (c) 2007 Jules White.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Jules White - initial API and implementation 
 ****************************************************************************/

public abstract class AbstractDiagramElement extends EventTrapPanel
        implements GraphicsConstants, ConnectableDiagramElement, MoveListener {

    private GEMSDiagram diagram_;
    protected AnchorManager anchorManager_;
    private List<Connection> connections_ = new ArrayList<Connection>();
    protected List<DiagramElementListener> listeners_ = new ArrayList<DiagramElementListener>(3);

    public AbstractDiagramElement(GEMSDiagram diagram) {
        diagram_ = diagram;
        anchorManager_ = new AnchorManager(this);
        new UIEventConnector(this, this);
    }

    public void dispose() {
        if (getParent() != null)
            removeFromParent();
    }

    public void update() {
        updateConnections();
    }

    public void onMoveStart() {
    }

    public void onMoveStop() {
    }

    public void onMove() {
        for (DiagramElementListener p : listeners_) {
            p.onMove(this);
        }

        // updateConnections();
    }

    public void updateConnections() {
        for (int i = 0; i < connections_.size(); i++) {
            Connection c = (Connection) connections_.get(i);
            c.update();
        }
    }

    public List<Connection> getConnections() {
        return connections_;
    }

    public void setConnections(List<Connection> connections) {
        connections_ = connections;
    }

    public void attachOutput(Connection c) {
        connections_.add(c);
    }

    public void attachInput(Connection c) {
        connections_.add(c);
    }

    public void detachOutput(Connection c) {
        connections_.remove(c);
    }

    public void detachInput(Connection c) {
        connections_.remove(c);
    }

    public AnchorManager getAnchorManager() {
        return anchorManager_;
    }

    public void setAnchorManager(AnchorManager anchorManager) {
        anchorManager_ = anchorManager;
    }

    public GEMSDiagram getDiagram() {
        return diagram_;
    }

    public void setDiagram(GEMSDiagram diagram) {
        diagram_ = diagram;
    }

    public Widget getDiagramWidget() {
        return this;
    }

    public void addDiagramElementListener(DiagramElementListener e) {
        listeners_.add(e);
    }

    public void removeDiagramElementListener(DiagramElementListener o) {
        listeners_.remove(o);
    }

    public String getId() {
        return getElement().getId();
    }

    public Rectangle getBounds() {
        Widget w = getDiagramWidget();
        Point p = Util.getDiagramLocation(w);
        int width = w.getOffsetWidth();
        int height = w.getOffsetHeight();
        return new Rectangle(p.x, p.y, width, height);
    }

    public Resizer getResizer() {
        return null;
    }

    public Widget getBodyPanel() {
        return null;
    }
}