org.pentaho.ui.xul.gwt.util.GenericDialog.java Source code

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Here is the source code for org.pentaho.ui.xul.gwt.util.GenericDialog.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.ui.xul.gwt.util;

import com.google.gwt.dom.client.Style;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import org.pentaho.gwt.widgets.client.dialogs.GlassPane;
import org.pentaho.ui.xul.gwt.AbstractGwtXulContainer;

public abstract class GenericDialog extends AbstractGwtXulContainer {

    private SimplePanel glasspane = new SimplePanel();
    protected DialogBox dialog;
    private VerticalPanel contents = new VerticalPanel();
    private String title = "";

    public static final int CANCEL = 0;
    public static final int ACCEPT = 1;
    public static final int EXTRA1 = 2;
    public static final int EXTRA2 = 3;
    private static int dialogPos = 1100;

    // requested height is adjusted by this value.
    private static final int HEADER_HEIGHT = 32;

    public GenericDialog(String tagName) {
        super(tagName);

        glasspane.setStyleName("glasspane");
        Style glassPaneStyle = glasspane.getElement().getStyle();
        glassPaneStyle.setProperty("width", "100%");
        glassPaneStyle.setProperty("height", "100%");
        glassPaneStyle.setProperty("display", "block");

    }

    private void createDialog() {
        dialog = new DialogBox() {
            @Override
            public void hide() {
                // User may press the "ESC" key, invoking this code
                super.hide();
                RootPanel.get().remove(glasspane);
                GlassPane.getInstance().hide();
            }
        };
        dialog.add(contents);
        dialog.setStylePrimaryName("pentaho-dialog");

    }

    public void hide() {
        if (dialog != null) {
            dialog.hide();
        }
    }

    public void show() {
        // Instantiation if delayed to prevent errors with the underlying GWT's not being able to calculate available
        // size
        // in the case that the GWT app has been loaded into an iframe that's not visible.
        if (dialog == null) {
            createDialog();
        }
        dialog.setText(title);

        contents.clear();

        // implement the buttons
        VerticalPanel panel = new VerticalPanel();

        Panel p = getDialogContents();
        p.setSize("100%", "100%");

        p.setStyleName("dialog-content"); //$NON-NLS-1$

        panel.add(p);
        panel.setCellHeight(p, "100%");
        panel.setStyleName("dialog"); //$NON-NLS-1$
        panel.setWidth("100%"); //$NON-NLS-1$
        panel.setSpacing(0);
        panel.setHeight("100%"); //$NON-NLS-1$
        contents.add(panel);
        contents.setCellHeight(panel, "100%");

        if (getBgcolor() != null) {
            p.getElement().getStyle().setProperty("backgroundColor", getBgcolor());
        }

        p = this.getButtonPanel();
        p.setWidth("100%");
        HorizontalPanel buttonPanelWrapper = new HorizontalPanel();
        buttonPanelWrapper.setStyleName("button-panel"); //$NON-NLS-1$
        buttonPanelWrapper.add(p);
        buttonPanelWrapper.setWidth("100%"); //$NON-NLS-1$
        buttonPanelWrapper.setCellWidth(p, "100%");
        contents.add(buttonPanelWrapper);

        contents.setWidth("100%"); //$NON-NLS-1$
        contents.setHeight("100%"); //$NON-NLS-1$

        if (getWidth() > 0) {
            contents.setWidth(getWidth() + "px"); //$NON-NLS-1$
        }
        if (getHeight() > 0) {
            int offsetHeight = getHeight() - HEADER_HEIGHT;
            contents.setHeight(offsetHeight + "px"); //$NON-NLS-1$
        }
        dialog.center();
        dialog.show();

        // Show glasspane element
        RootPanel.get().add(glasspane);

        // Notify GlassPane listeners
        GlassPane.getInstance().show();

        glasspane.getElement().getStyle().setProperty("zIndex", "" + (GenericDialog.dialogPos)); //$NON-NLS-1$
        dialog.getElement().getStyle().setProperty("zIndex", "" + (++GenericDialog.dialogPos)); //$NON-NLS-1$

    }

    public Panel getDialogContents() {
        return null;
    }

    public Panel getButtonPanel() {
        return null;
    }

    public void setTitle(final String title) {
        this.title = title;
    }

    public boolean isHidden() {
        return dialog == null || !dialog.isVisible();
    }

    public boolean isVisible() {
        return !isHidden();
    }

}