org.gwm.splice.client.toolbar.ActionBar.java Source code

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Here is the source code for org.gwm.splice.client.toolbar.ActionBar.java

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/*
 * Copyright (c) 2006/2007 Flipperwing Ltd. (http://www.flipperwing.com)
 *
 * 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.gwm.splice.client.toolbar;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.user.client.ui.HasHorizontalAlignment.HorizontalAlignmentConstant;

public abstract class ActionBar extends HorizontalPanel implements ClickListener {

    ArrayList listeners = new ArrayList();
    Map handlers = new HashMap();
    Map widgets = new HashMap();
    protected HorizontalPanel panel = new HorizontalPanel();

    ActionBar() {
        add(panel);
        setWidth("100%");
        setVisible(false);
    }

    // //////////////////////////////////////////////////////////////////////////////////

    public void addWidget(IActionWidget widget) {
        widgets.put(widget.getName(), widget);
        widget.addClickListener(this);
        panel.add((Widget) widget);
    }

    public void removeWidget(String name) {
        Widget widget = (Widget) widgets.get(name);
        if (widget == null) {
            return;
        }
        panel.remove(widget);
        widgets.remove(name);
    }

    public Widget getWidget(String name) {
        return (Widget) widgets.get(name);
    }

    // //////////////////////////////////////////////////////////////////////////////////

    private class ActionListenerWrapper {
        String widgetName;
        IActionListener listener;

        private ActionListenerWrapper(String widgetName, IActionListener listener) {
            this.widgetName = widgetName;
            this.listener = listener;
        }
    }

    // //////////////////////////////////////////////////////////////////////////////////

    public void addListener(IActionListener listener) {
        listeners.add(new ActionListenerWrapper(null, listener));
    }

    public void addListener(String widgetName, IActionListener listener) {
        listeners.add(new ActionListenerWrapper(widgetName, listener));
    }

    public void removeListener(IActionListener listener) {
        for (Iterator iter = listeners.iterator(); iter.hasNext();) {
            ActionListenerWrapper aw = (ActionListenerWrapper) iter.next();
            if (aw.listener.equals(listener)) {
                listeners.remove(aw);
            }
        }
    }

    public void addDefaultHandler(String widgetName, IActionListener listener) {
        handlers.put(widgetName, listener);
    }

    public void removeDefaultHandler(String widgetName) {
        handlers.remove(widgetName);
    }

    protected boolean notifyActionClicked(Widget widget, String name, int actionID) {
        boolean doDefault = true;
        for (Iterator iter = listeners.iterator(); iter.hasNext();) {
            ActionListenerWrapper aw = (ActionListenerWrapper) iter.next();
            if (aw.widgetName == null || aw.widgetName.equals(name)) {
                if (!aw.listener.onActionClicked(widget, name, actionID)) {
                    doDefault = false;
                }
            }
        }
        return doDefault;
    }

    protected void notifyDefaultHandler(Widget widget, String name, int actionID) {
        IActionListener listener = (IActionListener) handlers.get(name);
        if (listener != null) {
            listener.onActionClicked(widget, name, actionID);
        }
    }

    /* (non-Javadoc)
     * @see com.google.gwt.user.client.ui.ClickListener#onClick(com.google.gwt.user.client.ui.Widget)
     */
    public void onClick(Widget w) {
        IActionWidget iw = (IActionWidget) w;
        if (notifyActionClicked(w, iw.getName(), iw.getActionID())) {
            notifyDefaultHandler(w, iw.getName(), iw.getActionID());
        }
    }

}