org.jboss.errai.widgets.client.WSModalDialog.java Source code

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Here is the source code for org.jboss.errai.widgets.client.WSModalDialog.java

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/*
 * Copyright 2010 JBoss, a divison Red Hat, Inc
 *
 * 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.jboss.errai.widgets.client;

import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Style;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.*;
import org.jboss.errai.common.client.framework.AcceptsCallback;
import org.jboss.errai.widgets.client.effects.Effects;
import org.jboss.errai.widgets.client.icons.ErraiWidgetsImageBundle;
import org.jboss.errai.widgets.client.listeners.ClickCallbackListener;

public class WSModalDialog implements AcceptsCallback {
    Label message = new Label("Warning!");
    AcceptsCallback callbackTo;

    DockPanel dockPanel;

    Button okButton;
    ClickCallbackListener okListener;

    Button cancelButton;
    ClickCallbackListener cancelListener;

    SimplePanel drapePanel;
    WSWindowPanel window;

    ErraiWidgetsImageBundle imageBundle = GWT.create(ErraiWidgetsImageBundle.class);

    public WSModalDialog() {
        this("Alert!");
    }

    public WSModalDialog(String title) {
        window = new WSWindowPanel(title);

        dockPanel = new DockPanel();
        dockPanel.setWidth("400px");

        dockPanel.add(new Image(imageBundle.redFlag()), DockPanel.WEST);
        dockPanel.add(message, DockPanel.CENTER);

        message.getElement().getStyle().setProperty("padding", "0px");

        HorizontalPanel buttonPanel = new HorizontalPanel();

        okButton = new Button("OK");
        okListener = new ClickCallbackListener(this, AcceptsCallback.MESSAGE_OK);
        okButton.addClickHandler(okListener);

        buttonPanel.add(okButton);

        cancelButton = new Button("Cancel");
        cancelListener = new ClickCallbackListener(this, AcceptsCallback.MESSAGE_CANCEL);
        cancelButton.addClickHandler(cancelListener);

        dockPanel.add(cancelButton, DockPanel.SOUTH);

        buttonPanel.add(cancelButton);

        dockPanel.add(buttonPanel, DockPanel.SOUTH);
        dockPanel.setCellHorizontalAlignment(buttonPanel, DockPanel.ALIGN_RIGHT);
        dockPanel.setCellHeight(buttonPanel, "45px");

        window.add(dockPanel);
    }

    public void callback(Object message, Object data) {
        if (callbackTo != null)
            callbackTo.callback(message, data);
        try {
            window.hide();
        } catch (AssertionError ae) {
        }
    }

    public void ask(String message, final AcceptsCallback callbackTo) {
        this.callbackTo = callbackTo;
        this.message.setText(message);
        window.addClosingHandler(new Window.ClosingHandler() {
            public void onWindowClosing(Window.ClosingEvent event) {
                if (callbackTo != null)
                    callbackTo.callback("WindowClosed", null);
                RootPanel.get().remove(drapePanel);
            }
        });
    }

    public Button getOkButton() {
        return okButton;
    }

    public void setOkButton(Button okButton) {
        this.okButton = okButton;
    }

    public Button getCancelButton() {
        return cancelButton;
    }

    public void setCancelButton(Button cancelButton) {
        this.cancelButton = cancelButton;
    }

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

    public static SimplePanel createDrape() {
        SimplePanel drapePanel = new SimplePanel();

        Style drapeStyle = drapePanel.getElement().getStyle();

        drapeStyle.setProperty("position", "absolute");
        drapeStyle.setProperty("top", "0px");
        drapeStyle.setProperty("left", "0px");

        drapePanel.setWidth("100%");
        drapePanel.setHeight("100%");

        drapePanel.setStyleName("WSWindowPanel-drape");

        Effects.setOpacity(drapePanel.getElement(), 20);

        return drapePanel;
    }

    public void showModal() {
        RootPanel.get().add(drapePanel = createDrape());
        window.center();
        window.show();
    }

    /**
     * <p> Hides the Modal Window </p>
     */
    public void hide() {
        int index = RootPanel.get().getWidgetIndex(drapePanel);
        try {
            if (index > -1)
                RootPanel.get().remove(index);
        } catch (java.lang.AssertionError ignore) {
        }
        window.hide();
    }
}