org.pentaho.gwt.widgets.client.dialogs.DialogBox.java Source code

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Here is the source code for org.pentaho.gwt.widgets.client.dialogs.DialogBox.java

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/*!
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 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 Lesser General Public License for more details.
 *
 * Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
 */

package org.pentaho.gwt.widgets.client.dialogs;

import com.google.gwt.dom.client.Style.Display;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.FocusPanel;
import com.google.gwt.user.client.ui.FocusWidget;
import com.google.gwt.user.client.ui.KeyboardListener;
import com.google.gwt.user.client.ui.PopupListener;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.Widget;
import org.pentaho.gwt.widgets.client.utils.FrameUtils;

@SuppressWarnings("deprecation")
public class DialogBox extends com.google.gwt.user.client.ui.DialogBox implements PopupListener {

    private static FocusPanel pageBackground = null;
    private static int clickCount = 0;
    private static int dialogDepthCount = 0;
    private FocusWidget focusWidget = null;
    boolean autoHide = false;
    boolean modal = true;
    boolean centerCalled = false;

    public DialogBox(boolean autoHide, boolean modal) {
        super(autoHide, modal);
        this.autoHide = autoHide;
        this.modal = modal;
        addPopupListener(this);
        setStylePrimaryName("pentaho-dialog");
    }

    public boolean onKeyDownPreview(char key, int modifiers) {
        // Use the popup's key preview hooks to close the dialog when either
        // enter or escape is pressed.
        switch (key) {
        case KeyboardListener.KEY_ENTER:
        case KeyboardListener.KEY_ESCAPE:
            hide();
            break;
        }
        return true;
    }

    protected void initializePageBackground() {
        // IE6 has problems with 100% height so is better a huge size
        // pageBackground.setSize("100%", "100%");
        if (pageBackground == null) {
            pageBackground = new FocusPanel();
            pageBackground.setStyleName("glasspane"); //$NON-NLS-1$
            pageBackground.addClickListener(new ClickListener() {

                public void onClick(Widget sender) {
                    clickCount++;
                    if (clickCount > 2) {
                        clickCount = 0;
                        pageBackground.setVisible(false);
                        pageBackground.getElement().getStyle().setDisplay(Display.NONE);
                    }
                }
            });
            RootPanel.get().add(pageBackground, 0, 0);
        }
    }

    protected void block() {
        pageBackground.setSize("100%", Window.getClientHeight() + Window.getScrollTop() + "px"); //$NON-NLS-1$ //$NON-NLS-2$
        pageBackground.setVisible(true);
        pageBackground.getElement().getStyle().setDisplay(Display.BLOCK);

    }

    public void center() {
        initializePageBackground();
        super.center();
        if (modal && !centerCalled) {
            block();
            dialogDepthCount++;
        }
        if (focusWidget != null) {
            focusWidget.setFocus(true);
        }
        // hide <embeds>
        // TODO: migrate to GlassPane Listener
        FrameUtils.toggleEmbedVisibility(false);

        // Notify listeners that we're showing a dialog (hide PDFs, flash).
        if (!centerCalled) {
            GlassPane.getInstance().show();
        }
        centerCalled = true;
    }

    public void show() {
        super.show();
        if (focusWidget != null) {
            focusWidget.setFocus(true);
        }
    }

    public void setFocusWidget(FocusWidget widget) {
        focusWidget = widget;
        if (focusWidget != null) {
            focusWidget.setFocus(true);
        }
    }

    public void onPopupClosed(PopupPanel sender, boolean autoClosed) {
        if (modal) {
            dialogDepthCount--;
            centerCalled = false;
            if (dialogDepthCount <= 0) {
                pageBackground.setVisible(false);

                // reshow <embeds>
                if (this.isVisible()) {
                    // TODO: migrate to glasspane listener
                    FrameUtils.toggleEmbedVisibility(true);
                }

                // just make sure it is zero
                dialogDepthCount = 0;
            }
        }

        // Notify listeners that we're hiding a dialog (re-show PDFs, flash).
        GlassPane.getInstance().hide();
    }

}