org.openxdata.designer.client.widget.TreeItemWidget.java Source code

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Here is the source code for org.openxdata.designer.client.widget.TreeItemWidget.java

Source

package org.openxdata.designer.client.widget;

import org.openxdata.designer.client.controller.IFormActionListener;
import org.openxdata.designer.client.util.FormDesignerUtil;
import org.openxdata.sharedlib.client.util.FormUtil;

import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * Widget for tree items which gives them a context menu.
 * 
 *  www.openxdata.org - Licensed as written in license.txt and original sources of this file and its authors are found in sources.txt.
 *
 */
public class TreeItemWidget extends Composite {

    /** Popup panel for the context menu. */
    private PopupPanel popup;

    /** Listener for form action events. */
    private IFormActionListener formActionListener;

    /**
     * Creates a new tree item.
     * 
     * @param imageProto the item image.
     * @param caption the time caption or text.
     * @param popup the pop up panel for context menu.
     * @param formActionListener listener to form action events.
     */
    public TreeItemWidget(ImageResource imageProto, String caption, PopupPanel popup,
            IFormActionListener formActionListener) {

        this.popup = popup;
        this.formActionListener = formActionListener;

        HorizontalPanel hPanel = new HorizontalPanel();
        hPanel.setSpacing(0);

        hPanel.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
        hPanel.add(FormUtil.createImage(imageProto));
        //HTML headerText = new HTML(caption); //Replaced with Label due to bug which surfaces when we have text including things like "<sdsff>"
        Widget headerText = new Label(caption);
        hPanel.add(headerText);
        hPanel.setStyleName("gwt-noWrap");
        initWidget(hPanel);

        DOM.sinkEvents(getElement(), DOM.getEventsSunk(getElement()) | Event.ONMOUSEDOWN | Event.ONKEYDOWN);
    }

    @Override
    public void onBrowserEvent(Event event) {
        if (DOM.eventGetType(event) == Event.ONMOUSEDOWN) {
            if ((event.getButton() & Event.BUTTON_RIGHT) != 0 /*&& !Context.isStructureReadOnly()*/) {

                int ypos = event.getClientY();
                if (Window.getClientHeight() - ypos < 350)
                    ypos = event.getClientY() - 350;

                FormDesignerUtil.disableContextMenu(popup.getElement());
                popup.setPopupPosition(event.getClientX(), ypos);
                popup.show();
            }
        } else if (DOM.eventGetType(event) == Event.ONKEYDOWN) {
            if (event.getKeyCode() == KeyCodes.KEY_DELETE)
                formActionListener.deleteSelectedItem();
        }
    }
}