org.kie.guvnor.dtablexls.client.editor.AttachmentFileWidget.java Source code

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Here is the source code for org.kie.guvnor.dtablexls.client.editor.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.dtablexls.client.editor;

import org.kie.guvnor.dtablexls.service.HTMLFileManagerFields;
import org.uberfire.backend.vfs.Path;
import org.uberfire.client.common.LoadingPopup;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.*;
import com.google.gwt.user.client.ui.FormPanel.SubmitCompleteEvent;
import com.google.gwt.user.client.ui.FormPanel.SubmitCompleteHandler;

/**
 * This wraps a file uploader utility
 */

public class AttachmentFileWidget extends Composite {

    private FormPanel form;
    private Path contextPath;
    private String fileName;
    private Command createdCallback;
    private Path fullPath = null;

    public AttachmentFileWidget(Path contextPath, String fileName, Command createdCallback) {
        this.contextPath = contextPath;
        this.fileName = fileName;
        this.createdCallback = createdCallback;

        initWidgets();
        initSubmitCompleteHandler();
    }

    public AttachmentFileWidget(Path fullPath, Command createdCallback) {
        this.fullPath = fullPath;
        this.createdCallback = createdCallback;

        initWidgets();
        initSubmitCompleteHandler();
    }

    protected void initWidgets() {
        form = new FormPanel();
        form.setAction(GWT.getModuleBaseURL() + "dtablexls/file");
        form.setEncoding(FormPanel.ENCODING_MULTIPART);
        form.setMethod(FormPanel.METHOD_POST);

        FileUpload up = new FileUpload();
        up.setName(HTMLFileManagerFields.UPLOAD_FIELD_NAME_ATTACH);
        HorizontalPanel fields = new HorizontalPanel();
        if (fullPath == null) {
            fields.add(getHiddenField(HTMLFileManagerFields.FORM_FIELD_PATH, contextPath.toURI()));
            fields.add(getHiddenField(HTMLFileManagerFields.FORM_FIELD_NAME, fileName));
        } else {
            fields.add(getHiddenField(HTMLFileManagerFields.FORM_FIELD_FULL_PATH, fullPath.toURI()));
        }
        Button ok = new Button("upload");
        ok.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                showUploadingBusy();
                submitUpload();
            }
        });

        fields.add(up);
        fields.add(ok);

        form.add(fields);

        initWidget(form);
    }

    void initSubmitCompleteHandler() {
        form.addSubmitCompleteHandler(new SubmitCompleteHandler() {

            public void onSubmitComplete(SubmitCompleteEvent event) {
                LoadingPopup.close();

                if ("OK".equalsIgnoreCase(event.getResults())) {
                    Window.alert("Uploaded successfully");

                    createdCallback.execute();
                } else {
                    Window.alert("Upload failed:" + event.getResults());
                }
            }

        });
    }

    protected void submitUpload() {
        form.submit();
    }

    protected void showUploadingBusy() {
        LoadingPopup.showMessage("Uploading...");
    }

    private TextBox getHiddenField(String name, String value) {
        TextBox t = new TextBox();
        t.setName(name);
        t.setText(value);
        t.setVisible(false);
        return t;
    }
    /*
        public void addSupplementaryWidget(Widget d) {
    this.layout.addRow( d );
        }*/

    public void hide() {
        this.hide();
    }

}