Re: Strange error with streams

package org.jresearch.commons.gwt.client.widget;

import javax.annotation.Nonnull;

import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.user.client.ui.Label;

public class MessageTestBox extends DialogBox {

@Nonnull
private Label content;
private Button cancel;
@Nonnull
private HTMLPanel panel;

public MessageTestBox() {
final FlowPanel main = new FlowPanel();
setModal(true);
main.add(content = new Label());
main.add(panel = new HTMLPanel(""));
setWidget(main);
setGlassEnabled(true);
}

protected void createButtons(@Nonnull final HTMLPanel p, @Nonnull final Action... actions) {
p.clear();
for (final Action action : actions) {
p.add(createButton(action));
}
// Stream.of(actions).map(this::createButton).forEach(p::add);
if (cancel == null) {
cancel = createButton(new Action(SafeHtmlUtils.fromTrustedString("Cancel"), this::close));
}
p.add(cancel);
}

protected Button createButton(final Action action) {
return new Button(action.getActionName(), e -> close(action.getHandler()));
}

private void close(final Command toDo) {
hide(false);
toDo.execute();
}

public void show(@Nonnull final SafeHtml title, @Nonnull final SafeHtml text, @Nonnull final Action... actions) {
createButtons(panel, actions);
setHTML(title);
content.setText(text.asString());
center();
}

private void close() {
hide(true);
}

}
package org.jresearch.commons.gwt.client.widget;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

import com.google.common.base.MoreObjects;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.user.client.Command;

public class Action {

@Nonnull
private final SafeHtml actionName;
@Nullable
private final Command handler;

/**
* @param actionName
* @param handler
*/
public Action(@Nonnull final SafeHtml actionName, @Nullable final Command handler) {
this.actionName = actionName;
this.handler = handler;
}

/**
* @param actionName
* @param handler
*/
public Action(@Nonnull final SafeHtml actionName) {
this(actionName, null);
}

/**
* @return the actionName
*/
@Nonnull
public SafeHtml getActionName() {
return actionName;
}

/**
* @return the handler
*/
@Nullable
public Command getHandler() {
return handler;
}

@SuppressWarnings("nls")
@Override
public String toString() {
return MoreObjects.toStringHelper(this)
.omitNullValues()
.add("actionName", actionName)
.add("handler", handler)
.toString();
}

}

Simplified widget is in attachment. Mehod createButtons contains the the problem code.

Let me know if you need something else.

Stas

On Tuesday, November 1, 2016 at 11:13:41 AM UTC+1, Jens wrote:

Use -style PRETTY as SDM parameter so that the JS code is more readable. 

Looks like a GWT bug either in the compiler because of method references or inside the Stream emulation. If you can provide a minimal, reproducible example then open a bug report.

-- J.

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