com.vaadin.v7.client.ui.upload.UploadConnector Maven / Gradle / Ivy

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Vaadin 7 compatibility package for Vaadin 8
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/*
 * Copyright (C) 2000-2024 Vaadin Ltd
 *
 * This program is available under Vaadin Commercial License and Service Terms.
 *
 * See  for the full
 * license.
 */

package com.vaadin.v7.client.ui.upload;

import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.vaadin.client.ApplicationConnection;
import com.vaadin.client.Paintable;
import com.vaadin.client.UIDL;
import com.vaadin.client.communication.StateChangeEvent;
import com.vaadin.shared.EventId;
import com.vaadin.shared.ui.Connect;
import com.vaadin.v7.client.ui.AbstractLegacyComponentConnector;
import com.vaadin.v7.client.ui.VUpload;
import com.vaadin.v7.shared.ui.upload.UploadClientRpc;
import com.vaadin.v7.shared.ui.upload.UploadServerRpc;
import com.vaadin.v7.shared.ui.upload.UploadState;

@Connect(com.vaadin.v7.ui.Upload.class)
public class UploadConnector extends AbstractLegacyComponentConnector
        implements Paintable {

    public UploadConnector() {
        registerRpc(UploadClientRpc.class, new UploadClientRpc() {
            @Override
            public void submitUpload() {
                getWidget().submit();
            }
        });
    }

    @Override
    protected void init() {
        super.init();

        getWidget().fu.addChangeHandler(new ChangeHandler() {
            @Override
            public void onChange(ChangeEvent event) {
                if (hasEventListener(EventId.CHANGE)) {
                    getRpcProxy(UploadServerRpc.class)
                            .change(getWidget().fu.getFilename());
                }
            }
        });
    }

    @Override
    public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
        if (!isRealUpdate(uidl)) {
            return;
        }
        VUpload upload = getWidget();
        if (uidl.hasAttribute("notStarted")) {
            upload.t.schedule(400);
            return;
        }
        upload.setImmediate(getState().immediate);
        upload.client = client;
        upload.paintableId = uidl.getId();
        upload.nextUploadId = uidl.getIntAttribute("nextid");
        final String action = client
                .translateVaadinUri(uidl.getStringVariable("action"));
        upload.element.setAction(action);
        if (uidl.hasAttribute("buttoncaption")) {
            upload.submitButton
                    .setText(uidl.getStringAttribute("buttoncaption"));
            upload.submitButton.setVisible(true);
        } else {
            upload.submitButton.setVisible(false);
        }
        upload.fu.setName(upload.paintableId + "_file");

        if (!isEnabled() || isReadOnly()) {
            upload.disableUpload();
        } else if (!uidl.getBooleanAttribute("state")) {
            // Enable the button only if an upload is not in progress
            upload.enableUpload();
            upload.ensureTargetFrame();
        }
    }

    @Override
    public void onStateChanged(StateChangeEvent stateChangeEvent) {
        super.onStateChanged(stateChangeEvent);

        getWidget().disableTitle(hasTooltip());
    }

    @Override
    public VUpload getWidget() {
        return (VUpload) super.getWidget();
    }

    @Override
    public UploadState getState() {
        return (UploadState) super.getState();
    }

}