org.kie.guvnor.commons.ui.client.widget.AttachmentFileWidget.java Source code

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Here is the source code for org.kie.guvnor.commons.ui.client.widget.AttachmentFileWidget.java

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/*
 * Copyright 2010 JBoss 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.kie.guvnor.commons.ui.client.widget;

import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FileUpload;
import com.google.gwt.user.client.ui.FormPanel;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.TextBox;
import org.kie.guvnor.commons.ui.client.resources.i18n.CommonConstants;
import org.kie.guvnor.services.file.upload.FileManagerFields;
import org.kie.guvnor.services.file.upload.FileOperation;
import org.uberfire.backend.vfs.Path;

/**
 * This wraps a file uploader utility
 */
public class AttachmentFileWidget extends Composite {

    private final FormPanel form = new FormPanel();
    private final HorizontalPanel fields = new HorizontalPanel();

    private Command successCallback;
    private Command errorCallback;

    public AttachmentFileWidget() {
        form.setEncoding(FormPanel.ENCODING_MULTIPART);
        form.setMethod(FormPanel.METHOD_POST);

        form.addSubmitCompleteHandler(new FormPanel.SubmitCompleteHandler() {

            @Override
            public void onSubmitComplete(final FormPanel.SubmitCompleteEvent event) {
                if ("OK".equalsIgnoreCase(event.getResults())) {
                    executeCallback(successCallback);
                    Window.alert(CommonConstants.INSTANCE.UploadSuccess());
                } else {
                    executeCallback(errorCallback);
                    Window.alert(CommonConstants.INSTANCE.UploadFailure0(event.getResults()));
                }
            }

        });

        final FileUpload up = new FileUpload();
        up.setName(FileManagerFields.UPLOAD_FIELD_NAME_ATTACH);

        fields.add(up);
        form.add(fields);

        initWidget(form);
    }

    private void executeCallback(final Command callback) {
        if (callback == null) {
            return;
        }
        callback.execute();
    }

    public void submit(final Path context, final String fileName, final String targetUrl,
            final Command successCallback, final Command errorCallback) {
        this.successCallback = successCallback;
        this.errorCallback = errorCallback;
        fields.add(getHiddenField(FileManagerFields.FORM_FIELD_PATH, context.toURI()));
        fields.add(getHiddenField(FileManagerFields.FORM_FIELD_NAME, fileName));
        fields.add(getHiddenField(FileManagerFields.FORM_FIELD_OPERATION, FileOperation.CREATE.toString()));
        form.setAction(targetUrl);
        form.submit();
    }

    public void submit(final Path path, final String targetUrl, final Command successCallback,
            final Command errorCallback) {
        this.successCallback = successCallback;
        this.errorCallback = errorCallback;
        fields.add(getHiddenField(FileManagerFields.FORM_FIELD_FULL_PATH, path.toURI()));
        fields.add(getHiddenField(FileManagerFields.FORM_FIELD_OPERATION, FileOperation.UPDATE.toString()));
        form.setAction(targetUrl);
        form.submit();
    }

    private TextBox getHiddenField(final String name, final String value) {
        final TextBox t = new TextBox();
        t.setName(name);
        t.setText(value);
        t.setVisible(false);
        return t;
    }

}