Example usage for com.google.gwt.ajaxfeed.client.impl ErrorWrapper getMessage

Introduction

In this page you can find the example usage for com.google.gwt.ajaxfeed.client.impl ErrorWrapper getMessage.

Prototype

public String getMessage();

Source Link

Usage

From source file:com.google.gwt.sample.feedreader.client.FeedPanel.java

License:Apache License

/**
 * Load a single feed.//  w  w  w .  j  a v  a 2s.c o m
 */
public void loadFeed() {
    loadStarted = true;
    loadFinished = false;

    getLabel().setBusy(true);

    JavaScriptObject feedJso = feedApi.construct(feed.getUrl());
    feedApi.setNumEntries(feedJso, 20);
    feedApi.load(feedJso, new FeedCallback() {
        public void onLoad(JavaScriptObject feedResult) {
            // Fix up any missing fields
            resultApi.bind(feedResult);

            ErrorWrapper errorResponse = resultApi.getError(feedResult);
            if (errorResponse != null) {
                getLabel().setText(feed.getTitle() + " (Error)");
                setText("Unable to load feed (" + errorResponse.getMessage() + ")");
                return;
            }

            JavaScriptObject jsonFeed = resultApi.getFeed(feedResult);
            entries = jsonFeedApi.getEntries(jsonFeed);

            String title = jsonFeedApi.getTitle(jsonFeed);
            feed.setTitle(title);
            getLabel().setText(title);

            getLabel().setBusy(false);

            final Date lastViewed = new Date(feed.getLastArticle());

            // Count the number of new entries while the next feed downloads
            DeferredCommand.addCommand(new IncrementalCommand() {
                final Iterator i = entries.iterator();
                int newEntries = 0;

                public boolean execute() {
                    EntryWrapper entry = (EntryWrapper) i.next();

                    try {
                        if ((new Date(entry.getPublishedDate())).after(lastViewed)) {
                            newEntries++;
                        }
                    } catch (IllegalArgumentException e) {
                        // Ignore date formats that we can't parse.
                    }

                    if (i.hasNext()) {
                        return true;

                    } else {
                        // Show the number of new entries
                        if (newEntries > 0) {
                            getLabel().addStyleName("unseen");
                            getLabel().setText("(" + newEntries + ") " + feed.getTitle());
                        } else {
                            getLabel().setText(feed.getTitle());
                        }

                        getLabel().setBusy(false);

                        return false;
                    }
                }
            });

            loadStarted = false;
            loadFinished = true;
            drawn = false;
            redraw();
        }
    });
}

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From source file:com.google.gwt.sample.feedreader.client.FeedSelectPanel.java

License:Apache License

public FeedSelectPanel(final ConfigurationPanel parent, final Configuration configuration, String query) {
    super("Select feed...", parent);

    FeedCallback fc = new FeedCallback() {
        public void onLoad(final JavaScriptObject jso) {
            RESULT_API.bind(jso);//www .  j a v a 2  s  . c om

            ErrorWrapper error = RESULT_API.getError(jso);
            if (error != null) {
                Window.alert("Unable to find feeds.\n" + error.getMessage());
                return;
            }

            // Remove the loading message
            clear();

            // Update the UI piecewise
            DeferredCommand.addCommand(new IncrementalCommand() {
                List feeds = configuration.getFeeds();
                Iterator i = RESULT_API.getEntries(jso).iterator();

                public boolean execute() {
                    final FindResultApi.Entry entry = (FindResultApi.Entry) i.next();
                    if (feeds.contains(entry.getUrl())) {
                        return i.hasNext();
                    }

                    UnsunkLabel title = new UnsunkLabel(entry.getTitle(), true);
                    title.addStyleName("title");
                    UnsunkLabel snippit = new UnsunkLabel(entry.getContentSnippet(), true);
                    snippit.addStyleName("snippit");
                    UnsunkLabel url = new UnsunkLabel(entry.getUrl());
                    url.addStyleName("snippit");

                    FlowPanel vp = new FlowPanel();
                    vp.add(title);
                    vp.add(snippit);
                    vp.add(url);

                    add(new PanelLabel(vp, new Command() {
                        public void execute() {
                            History.newItem(entry.getUrl());
                        }
                    }));

                    return i.hasNext();
                }
            });
        }
    };

    Globals.API.findFeeds(query, fc);

    addStyleName("FeedSelectPanel");
    add(new PanelLabel("Waiting for results"));
}

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