cc.alcina.framework.gwt.client.widget.dialog.CancellableRemoteDialog.java Source code

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Here is the source code for cc.alcina.framework.gwt.client.widget.dialog.CancellableRemoteDialog.java

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/* 
 * 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 cc.alcina.framework.gwt.client.widget.dialog;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;

import cc.alcina.framework.common.client.actions.PermissibleAction;
import cc.alcina.framework.common.client.actions.PermissibleActionEvent;
import cc.alcina.framework.common.client.actions.PermissibleActionListener;
import cc.alcina.framework.common.client.util.CommonUtils;
import cc.alcina.framework.gwt.client.widget.ModalNotifier;

/**
 * 
 * @author Nick Reddel
 */
public class CancellableRemoteDialog extends GlassDialogBox implements ModalNotifier {
    public static final String CANCEL_ACTION = "cancel";

    private Label statusLabel;

    protected Button cancelButton;

    private Button retryButton;

    private String status = "";

    private Double progress;

    public CancellableRemoteDialog(String msg, PermissibleActionListener l) {
        this(msg, l, true);
    }

    public CancellableRemoteDialog(String msg, PermissibleActionListener l, boolean autoShow) {
        if (l == null) {
            l = new PermissibleActionListener() {
                public void vetoableAction(PermissibleActionEvent evt) {
                    CancellableRemoteDialog.this.hide();
                }
            };
        }
        final PermissibleActionListener lCopy = l;
        setText("Please wait...");
        setAnimationEnabled(initialAnimationEnabled());
        Grid grr = new Grid(2, 1);
        status = msg;
        statusLabel = new Label(msg);
        grr.getCellFormatter().setHorizontalAlignment(0, 0, HasHorizontalAlignment.ALIGN_CENTER);
        grr.getCellFormatter().setHorizontalAlignment(1, 0, HasHorizontalAlignment.ALIGN_CENTER);
        grr.setCellPadding(4);
        cancelButton = new Button("Cancel");
        setRetryButton(new Button("Retry"));
        cancelButton.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                PermissibleAction action = new PermissibleAction();
                action.setActionName(CANCEL_ACTION);
                lCopy.vetoableAction(new PermissibleActionEvent(this, action));
            }
        });
        grr.setWidget(0, 0, statusLabel);
        HorizontalPanel hp = new HorizontalPanel();
        hp.setSpacing(0);
        hp.add(cancelButton);
        hp.add(getRetryButton());
        getRetryButton().setVisible(false);
        grr.setWidget(1, 0, hp);
        setWidget(grr);
        if (autoShow) {
            centerAndShow();
        }
    }

    public void centerAndShow() {
        center();
        show();
    }

    public Button getRetryButton() {
        return retryButton;
    }

    @Override
    public void modalOff() {
        hide();
    }

    @Override
    public void modalOn() {
        centerAndShow();
    }

    @Override
    public void setMasking(boolean masking) {
        if (!masking) {
            getGlass().setOpacity(0);
        }
    }

    @Override
    public void setProgress(double progress) {
        this.progress = progress;
        updateStatusLabel();
    }

    public void setRetryButton(Button retryButton) {
        this.retryButton = retryButton;
    }

    public void setStatus(String status) {
        this.status = CommonUtils.nullToEmpty(status);
        updateStatusLabel();
    }

    private void updateStatusLabel() {
        statusLabel.setText(progress == null ? status
                : CommonUtils.formatJ("%s - %s% complete", status,
                        CommonUtils.padTwo((int) Math.round(progress * 100))));
        center();
    }

    protected boolean initialAnimationEnabled() {
        return true;
    }
}