com.ikon.frontend.client.widget.properties.attachment.ExtendedFlexTable.java Source code

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Here is the source code for com.ikon.frontend.client.widget.properties.attachment.ExtendedFlexTable.java

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/**
 *  openkm, Open Document Management System (http://www.openkm.com)
 *  Copyright (c) 2006-2013  Paco Avila & Josep Llort
 *
 *  No bytes were intentionally harmed during the development of this application.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *  
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package com.ikon.frontend.client.widget.properties.attachment;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.ui.FlexTable;

import com.ikon.frontend.client.Main;

/**
 * ExtendedFlexTable
 * 
 * @author jllort
 *
 */
public class ExtendedFlexTable extends FlexTable {

    private int mouseX = 0;
    private int mouseY = 0;
    private int selectedRow = -1;

    /**
     * ExtendedFlexTable
     */
    public ExtendedFlexTable() {
        super();

        // Adds double click event control to table ( on default only has CLICK )
        sinkEvents(Event.ONDBLCLICK | Event.MOUSEEVENTS);
        addClickHandler(new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {
                // Mark selected row or orders rows if header row (0) is clicked 
                // And row must be other than the selected one
                markSelectedRow(getCellForEvent(event).getRowIndex());
            }
        });
    }

    /* (non-Javadoc)
     * @see com.google.gwt.user.client.EventListener#onBrowserEvent(com.google.gwt.user.client.Event)
     */
    public void onBrowserEvent(Event event) {
        int selectedRow = -1;

        if (DOM.eventGetType(event) == Event.ONDBLCLICK || DOM.eventGetType(event) == Event.ONMOUSEDOWN
                || DOM.eventGetType(event) == Event.ONCLICK) {
            Element td = getMouseEventTargetCell(event);
            if (td == null)
                return;
            Element tr = DOM.getParent(td);
            Element body = DOM.getParent(tr);
            selectedRow = DOM.getChildIndex(body, tr);
        }

        // Only if selectedRow > 0, indicates a document row value and must apear menu or double click action
        if (selectedRow >= 0) {
            // When de button mouse is released
            mouseX = DOM.eventGetClientX(event);
            mouseY = DOM.eventGetClientY(event);

            // On double click not sends event to onCellClicked across super.onBrowserEvent();
            if (DOM.eventGetType(event) == Event.ONDBLCLICK) {
                // Disables the event propagation the sequence is:
                // Two time entry onCellClicked before entry on onBrowserEvent and disbles the
                // Tree onCellClicked that produces inconsistence error refreshing
                DOM.eventCancelBubble(event, true);
                Main.get().mainPanel.desktop.browser.tabMultiple.tabMail.mailViewer.downloadAttachment();
            } else if (DOM.eventGetType(event) == Event.ONMOUSEDOWN) {
                switch (DOM.eventGetButton(event)) {
                case Event.BUTTON_RIGHT:
                    markSelectedRow(selectedRow);
                    Main.get().mainPanel.desktop.browser.tabMultiple.tabMail.mailViewer.menuPopup
                            .setPopupPosition(mouseX, mouseY);
                    Main.get().mainPanel.desktop.browser.tabMultiple.tabMail.mailViewer.menuPopup.show();
                    DOM.eventPreventDefault(event); // Prevent to fire event to browser
                    break;
                default:
                    break;
                }
            }
        }
        super.onBrowserEvent(event);
    }

    /**
      * Method originally copied from HTMLTable superclass where it was defined private
      * Now implemented differently to only return target cell if it'spart of 'this' table
      */
    private Element getMouseEventTargetCell(Event event) {
        Element td = DOM.eventGetTarget(event);
        //locate enclosing td element
        while (!DOM.getElementProperty(td, "tagName").equalsIgnoreCase("td")) {
            // If we run out of elements, or run into the table itself, then give up.
            if ((td == null) || td == getElement())
                return null;
            td = DOM.getParent(td);
        }
        //test if the td is actually from this table
        Element tr = DOM.getParent(td);
        Element body = DOM.getParent(tr);
        if (body == this.getBodyElement()) {
            return td;
        }
        //Didn't find appropriate cell
        return null;
    }

    /**
     * markSelectedRow
     * 
     * @param row
     */
    private void markSelectedRow(int row) {
        // And row must be other than the selected one
        if (row != selectedRow) {
            selectedRow = row;
        }
    }

    /**
     * Removes all rows except the first
     */
    public void removeAllRows() {
        // Resets selected Rows and Col values
        selectedRow = -1;

        // Purge all rows
        while (getRowCount() > 0) {
            removeRow(0);
        }
    }

    /**
     * Gets the selected row
     * 
     * @return The selected row value
     */
    public int getSelectedRow() {
        return selectedRow;
    }
}